GMC Tech 2 User Manual

Tech 2 User’s Guide

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CONTENTS

I. Introduction

II. Care & Cleaning

III. Getting Started

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IV. Power Supply

V. Adapters

VI. Troubleshooting

VII. Software

©2005 GM Service and Parts Operations

Tech 2 User’s Guide

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The Tech 2 User ’s Guide provides a comprehensive overview of the Tech 2 scan tool.
Everything contained in this manual is based on the latest product information available at the time of

publication. The right is reserved to make changes at any time without notice.
No part of this publication may be reproduced, stored in any retrieval system, or transmitted in any form

by any means, including but not limited to electronic, mechanical, photocopying, recording, or otherwise,
without the prior written permission of GM Service and Parts Operations. This includes all text, tables,
illustrations, and charts.

Requests for permission should be sent to:
General Motors Corporation

Service and Parts Operations
Product Engineering
37350 Ecorse Road
Romulus, MI 48174-1376
U.S.A.

© 2005 GM Service and Parts Operations. Made in the U.S.A. All rights reserved.
® Tech 2 is a registered trademark of General Motors Corporation.

GM

Ser vice and Par ts Operations

2005 Tech 2 User’s Guide i

Customer Support Overview

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To obtain assistance with a question or problem concerning the operation of your Techline product and its
attached products, or to arrange for warranty and non-warranty repairs, telephone the GM-Techline
Customer Support Center. To order replacement parts, contact GM Dealer Equipment or your customer
support representative for GM-Techline.

Before Calling

Before making a call to the Customer Support Center or GM Dealer Equipment, be sure to have the
following information ready:

• Dealership name, address and dealer code number

• Serial number of equipment or tool

• Name, part number, and quantity of the item to be requested

• Telephone number where the technician may be reached
Prepare a brief description of the problem:

• Tell when the problem occurred

• List any error codes displayed

• Tell what accessories were being used when the problem occurred, and vehicle information

Please see next page...

2005 Tech 2 User’s Guide ii

Making the Call

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The GM Service and Parts Operations Techline Customer Support Center telephone lines operate from
8:00 a.m. to 8:00 p.m. (Eastern Standard Time) Monday to Friday.

In the United States and Canada to contact Customer Support, dial:

• English: 1-800-828-6860 (option 1) or 1-888-337-1010 (option 3)

• French: 1-800-503-3222

• Spanish: 1-248-265-0840 (option 2)

• Fax line: 1-248-265-9327*
To call GM Dealer Equipment, dial 1-800-GM-TOOLS (1-800-468-6657).
International customers can send questions or comments by fax, (U.S. country code) 248-265-9327, or

use the following telephone numbers:

 Latin America 1-248-265-0840  Asia Pacific 045-562-4483
 Europe 41-41-766-2940  Australia 613-9544-6222

A GM-Techline Customer Support representative will come on the line or respond by fax to answer
questions, make suggestions, and take repair and parts orders. To make sure every problem is resolved to
the satisfaction of the caller, the GM-Techline Customer Support representative will record each problem,
question, or suggestion into a special problem tracking system. Any problems that cannot be resolved over
the phone will be directed to the appropriate group for resolution.

* You may also send a GM-Techline Product Assistance fax form to the Customer Support Center.

2005 Tech 2 User’s Guide iii

Declaration of Conformity

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According to ISO/IEC Guide and EN 45014,

Manufacturer’s Name: Vetronix Corp.
Manufacturer’s Address: 2030 Alameda Padre Serra

declares that the product,

Product Name: Tech 2
Model Number(s): Z1090A

Product Options: ALL

conforms to the following product specifications:

Safety: IEC 1010-1: 1990 + A1 / EN 61010-1: 1993
EMC: CISPR 11: 1990 / EN 55011 1991 - Class A

Santa Barbara, CA 93103

EN 50082-1: 1992
IEC 801-2: 1991 / prEN 55024-2 1992 - 3kV CD, 8kV AD
IEC 801-3: 1984 / prEN 55024-3 1991 - 3V/m
IEC 801-4: 1988 / prEN 55024-4 1992 - 0.5kV

Signal Lines. 1kV Power Lines

Supplementary Information

This is a Class A product. In a domestic environment this product may cause radio interference in which
case the user may be required to take adequate measures.

The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC and the
EMC Directive 89/336/EEC.

Location: Santa Barbara, California
Date: 3 / 19 / 01
QA Manager: David Parker, Product Regulations

2005 Tech 2 User’s Guide iv

Software License Agreement

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Please read this license agreement carefully before proceeding to operate the equipment. Rights to the
software are offered only on the condition that the customer agrees to all terms and conditions of the
license agreement. Proceeding to operate the equipment indicates your acceptance of these terms and
conditions:

1. USE: Customer may use the software only on the computer system on which it was originally installed. Customer may not reverse
assemble or decompile software unless authorized by law.

2. OWNERSHIP: Customer agrees that it does not have any title or ownership of the software, other than ownership of the physical
media. Customer acknowledges and agrees that the software is copyrighted and protected under the copyright laws. Customer
acknowledges and agrees that the software may have been developed by a third party software supplier named in the copyright
notices included with the software, who shall be authorized to hold the Customer responsible for any copyright infringement or
violation of this agreement.

3. TERMINATION: General Motors may terminate this software license for failure to comply with any of these terms provided GM has
requested Customer to cure the failure and Customer has failed to do so within thirty (30) days of such notice.

Limited Warranty

SOFTWARE: Vetronix warrants for a period of ninety (90) days from the date of purchase that the Vetronix software product
will execute its programming instructions when properly installed. Vetronix does not warrant that the operations of the
Vetronix software will be uninterrupted or error free. In the event that this Vetronix software product fails to execute its
programming instructions during the warranty period, the remedy shall be a replacement of such software product.

LIMITATION OF WARRANTY: Vetronix makes no other express warranty, whether written or oral with respect to this product.
Any implied warranty of merchantability or fitness for or a particular purpose is limited to the 90-day duration of this written
warranty. Some states or provinces do not allow limitations on how long an implied warranty lasts, so the above limitations or
exclusion may not apply to you.

EXCLUSIVE REMEDIES: The remedies provided above are Customer’s sole and exclusive remedies. In no event shall
Vetronix be liable for any direct, indirect, special, incidental or consequential damages (including lost profit) whether based
on warranty, contract, tort or any other legal theory.

2005 Tech 2 User’s Guide v

INTRODUCTION

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Using This Manual

To increase their effectiveness with the Tech 2, users should familiarize themselves with the format and
information contained in this guide.

IMPORTANT

Tech 2 figures and illustrations are hyperlinked to the text of this manual. To view a figure, simply click
on its description, which is shown in blue text. After viewing the figure, click on the rainbow-colored
arrow at the lower left-hand corner of the screen to return to your place in the manual.

Vehicle System Familiarity

While the Tech 2 is a powerful tool, it cannot replace knowledge and skill. To obtain maximum benefit from
the Tech 2, service technicians must have a complete understanding of vehicle systems.

When using the Tech 2 to diagnose a vehicle, it is recommended that service technicians also refer to the
service manual and the latest service bulletins.

Disclaimer

The Tech 2 is designed for use by trained service personnel only. It has been developed for the sole
purpose of diagnosing and repairing automotive systems with electronic controls and interfaces.

Every attempt has been made to provide complete and accurate technical information based on factory
service information available at the time of publication. However, the right is reserved to make changes at
any time without notice.

2005 Tech 2 User’s Guide I - 1

Things You Should Know

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CAUTION: EXHAUST GAS

When performing any checks with the engine running in an enclosed space such as a garage, ensure proper
ventilation. Never inhale exhaust gases; they contain carbon monoxide—a colorless, odorless, extremely dangerous
gas that can cause unconsciousness or death.

CAUTION: PARKING BRAKE

To help avoid personal injury, always set the parking brake securely and block the drive wheels before performing
any checks or repairs on the vehicle.

CAUTION: SPARKS

The Tech 2 uses parts that can produce arcs or sparks. When used in a garage environment, the Tech 2 must be
located not less than 18 inches (460 mm) above the floor.

INTRODUCTION

Please see next page...

2005 Tech 2 User’s Guide I - 2

NOTICE

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• DO NOT clasp battery clamps together when connected simultaneously to the vehicle’s 12 volt
cigarette lighter or power supply. Reverse polarity in the vehicle’s cigarette lighter may be present.
Damage could occur to the Tech 2 or to the vehicle.

• If power is applied to the Tech 2 and the display remains blank, reverse polarity in the cigarette
lighter may be present. Damage to the Tech 2 could occur. DO NOT connect the DLC cable to the
vehicle. Verify that the center contact of the vehicle’s cigarette lighter has +12 volts and that the outer
contact is grounded.

• Turn off the power before inserting or removing the PCMCIA card. Continual removal and reinsertion
of this card is not recommended.

• Align all cards and components carefully before inserting them into the Tech 2.

• Make sure all cables and adapters are firmly connected before starting to use the Tech 2.

• Always read the instructions completely before attempting a new procedure.

INTRODUCTION

• The RS-232 and RS-485 ports must not be connected to a direct phone line as the Tech 2 was not
designed for this method of communication.

• Do not place the Tech 2 so that the tilt stand can make contact with the vehicle battery terminal as
this could short out the battery.

2005 Tech 2 User’s Guide I - 3

INTRODUCTION

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FCC Compliance

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment.

This equipment generates, uses, and can radiate radio frequency energy. If not installed and used in
accordance with the instruction manual, it may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference’s in which case the
user will be required to correct the interference at his or her own expense.

VDE Certification (for European Use)

This equipment complies with the requirements of VDE 0871/6.78. Improper use or maintenance neglect
may cause unacceptable radio or TV interference.

2005 Tech 2 User’s Guide I - 4

SECTION I INTRODUCTION

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Tech 2 Overview

The Tech 2 is a hand-held computer designed to aid in diagnosis and repair of automotive systems with
electronic controls and interfaces.

Figure I-1

Hardware

The Tech 2 has been designed as a rugged, shop-ready tool by having:

• A sturdy case

• A sealed keypad

• Heavy-duty cables and connectors

External features of the Tech 2 (front view)

You can expect years of trouble-free service if you take reasonable care of the Tech 2 and follow the
maintenance procedures outlined in Section II.

Figure I-2
Table listing Tech 2 base kit part numbers and descriptions (see Section III for illustrations)

Figure I-3
Table listing part numbers for Tech 2 adapters and accessories (see Sections V and Section VII)

Video clip 1 (38 seconds)
90-degree adapter (J42598-20) installation demo*

*After viewing, click the X in the upper right-hand corner of the video window to close.

2005 Tech 2 User’s Guide I - 5

SECTION I INTRODUCTION

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Power Supply (see Section IV)

The Tech 2 can be powered from:

• The automobile battery power cable

• The cigarette lighter power cable

• The Tech 2 power supply

• The DLC (Data Link Connector) connection in most vehicles

Figure I-4
Table listing part numbers for Tech 2 power supplies and cables (see Section IV)

Commands

The Tech 2 prompts you to enter commands via the membrane keypad for:

• Retrieving and viewing diagnostic information

• Selecting self tests

• Performing vehicle diagnostics

Data Storage

The Tech 2 contains electronic components called PCMCIA (Personal Computer Memory Card Industry
Association) cards, which store diagnostic programs. The Tech 2 can be updated as vehicle models
change by reprogramming the PCMCIA card via the RS-232 connector.

Figure I-5
Table showing the PCMCIA kit part number and description

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SECTION I INTRODUCTION

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Mechanical Dimensions

The dimensions of the Tech 2 are as follows:

• Width – 6.1 inches (155 mm)

• Height – 11.8 inches (300 mm)

• Depth – 2.0 inches (55 mm)

• Weight – 2.2 pounds (1.0 kg)

Environmental Specifications

CONDITIONS SPECIFICATIONS

Temperature Operating: 0 to 40°C (32 to 104°F)

Relative Humidity Operating: 15% to 95% at 40°C (non-condensing)

Non-operating: -40 to 70°C (-40 to 158°F)

Non-operating: 90% at 65°C (non-condensing)

2005 Tech 2 User’s Guide I - 7

SECTION I INTRODUCTION

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Warranty

The Tech 2 is warranted against defects in materials and workmanship by the manufacturer for 24 months
beginning five days after the date of shipment to your service center.

If your Tech 2 must be sent in for repair, a replacement will be sent to your dealership prior to the return of
the failed Tech 2. Use the package that the replacement arrives in to return the defective unit. You can
contact Customer Support at 1-800-828-6860 for the exact exchange procedure. If notification of defect is
received during the warranty period, the part listed in figures I-2, I-3, I-4, or I-5 that is defective will be
replaced. You must return the defective unit as directed, or you will be charged for the replacement.

Important: This warranty does not cover any part that has been abused, altered, used for purpose other
than which it was intended, or used in a manner inconsistent with instructions regarding use. This
includes, but is not limited to, removal of any Tech 2 screws.

2005 Tech 2 User’s Guide I - 8

SECTION II CARE & CLEANING

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Care and Cleaning

After using the Tech 2, a few simple steps will insure that you get the most life out of this diagnostic tool.

NOTICE

Do not spray or pour cleaner anywhere on the Tech 2. If the Tech 2 should become dirty, clean it with a
mild detergent or hand soap. Avoid using harsh solvents such as petroleum-based cleaning agents:
acetone, benzene, trichlorethylene, etc. Harsh solvents can etch Tech 2 plastic surfaces.

Although the Tech 2 is water resistant it is not waterproof, so be sure to thoroughly dry off the Tech 2
prior to usage and/or storage.

Maintenance of the Tech 2 requires periodic inspection and cleaning of:

• The display window

• The keypad

• The cable assemblies and connectors
Make sure the Tech 2 is not connected to a vehicle or other power source and follow the cleaning

procedures detailed below.

Please see next page...

2005 Tech 2 User’s Guide II - 1

SECTION II CARE & CLEANING

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Cleaning the Display

The display collects dust and grime during normal use. Occasionally wipe the screen with a clean, soft,
static-free cloth. Remove stubborn stains by applying a non-abrasive glass cleaner to a soft cloth and wipe
cloth across display area.

Cleaning the Keypad

Clean the keypad with a non-abrasive cleaner. Apply a small amount of cleaner on a soft cloth and wipe
cloth across keypad area.

Maintaining the Cable Assemblies and Connectors

Inspect cable assemblies during connection and disconnection to components. Watch for any cuts or
abrasions along the cables. Check the connectors and connector pins for grease, dirt and corrosion. If
contaminants are present, remove them with a mild soap solution.

Storing the Tech 2

• Store the Tech 2 away from solvents and other liquids. It is NOT moisture proof.

• Store the Tech 2 away from direct sunlight. Ultraviolet and infrared light will darken the display.

• Store the Tech 2 in its plastic case. Otherwise, the high-impact plastic cover could become scratched.

2005 Tech 2 User’s Guide II - 2

SECTION III GETTING STARTED

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Getting Started

This section covers all Tech 2 vehicle applications. Therefore, some of the information provided may not
be required for individual applications.

The Tech 2 contains two serial communication ports: the RS-232 and the RS-485. Use the RS-232 port for
downloading data from another computer to the Tech 2. The RS-485 port is currently not used.

The Tech 2 also contains two PCMCIA ports, a power jack connector, and a Vehicle Communications
Interface (VCI) connector. One of the PCMCIA slots contains a memory card with diagnostic information.
The power jack accepts power from the AC/DC power supply, battery, or cigarette lighter power cable. The
VCI connector accepts the DLC cable or DLC loopback adapter.

Figure III-1
Identification of the Tech 2’s external ports

NOTICE

When using the Tech 2 for vehicle communications, the power jack must be connected to the Tech 2
DLC cable for proper grounding.

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SECTION III GETTING STARTED

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Initial Hardware Installation

The Tech 2 hardware initial installation requires the following seven tasks:

1. Remove the RS-232 loopback adapter (P/N 3000112) from the storage case (P/N 3000116). Plug it into
the RS-232 port (Figure III-2).

2. Attach the Tech 2 DLC cable (P/N 3000095) to the VCI connector (Figure III-3).

3. Locate the DLC loopback adapter (P/N 3000109) in the storage case. Attach it to the DLC cable
(Figure III-4).

4. Locate the NAO (P/N 3000113) or Universal (P/N 3000115) power supply and appropriate power cord in
the storage case. Insert the power jack into the Tech 2 DLC cable (Figure III-5) or into the bottom of the
Tech 2 next to DLC cable connector (Figure III-6).

5. Turn on power by pressing the PWR button located on the Tech 2 keypad.

6. Tech 2 hardware will be verified automatically by the POST test. (For information on this program, refer
to Section VI - Troubleshooting.)

7. Disconnect the RS-232 loopback adapter, the power supply, and the DLC loopback adapter and return
to the Tech 2 storage case (Figure III-7).

Figure III-2 – Connection of the RS-232
loopback adapter to the RS-232 port

Figure III-3 – Connection of the DLC cable
to the VCI connector

Figure III-4 – Connection of the DLC
loopback adapter to the DLC cable

Figure III-5 – Connection of the power jack
to the DLC cable

Figure III-6 – Connection of the power jack
to the bottom of the Tech 2

Figure III-7 – Disconnection of the RS-232
loopback adapter, DLC loopback adapter,
and the power supply

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PCMCIA Card Removal

The PCMCIA Card is accessed by opening the hinged door located at the top of the Tech 2. The card is
found in the upper slot. The lower slot will be used for future enhancements. Press the arrow button
(located beside the slot) to eject the card (Figure III-8).

Figure III-8
Ejection of PCMCIA card

PCMCIA Card Insertion

The PCMCIA Card is keyed with two notches on one side and one notch on the other side (Figure III-9).
Make sure that the notches are in the correct position before inserting the card. Slowly insert the card
(Figure III-10) until it clicks into place.

Figure III-9
PCMCIA card keying

Figure III-10
PCMCIA card insertion

NOTICE

Use only GM Service and Parts Operations supplied PCMCIA cards. The PCMCIA slots are designed
to interface with 5-volt cards. Permanent damage to Tech 2 could occur if a 3.3-volt card is inserted into
the Tech 2 PCMCIA connector.

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SECTION III GETTING STARTED

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Vehicle Communications Interface Module Removal

The Vehicle Communications Interface (VCI) module is located at the lower end of the Tech 2. Removal of
this module is required only if the VCI needs to be updated or replaced.

To remove the module disconnect Tech 2 DLC cable if attached, move the lever (Figure III-11) all the way
toward the right side of the Tech 2 (Figure III-12). The VCI module can now be removed.

Figure III-11
VCI module removal

Figure III-12
VCI module removed

Hand Strap Adjustment

The Tech 2 velcro hand straps may be adjusted for individual needs as shown in the illustration below
(Figure III-13).

Figure III-13
Tech 2 hand strap adjustment

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SECTION III GETTING STARTED

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Tech 2 Keypad

The Tech 2 keypad consists of six major keypad operation areas (Figure III-14):

1. Control keys (SHIFT, PWR)

2. Soft keys

3. Selection (arrow) keys

4. Action keys (YES, NO, ENTER, EXIT)

5. Function keys (F0 to F9)

6. Help (?) key

Control Keys

The [PWR] key is used to turn the Tech 2 on or off (Figure III-15). The status indicator light above this key
will be illuminated green when the Tech 2 is operational.

The [SHIFT] key is used with the up and down arrow keys to change screen brightness and contrast
(Figure III-15). To adjust screen brightness and contrast, perform the following:

• Press the [SHIFT] key once (amber status indicator light above [SHIFT] should light up).

• Use up and down arrows to adjust screen brightness and contrast:

Press up arrow key to increase screen brightness and contrast.
Press down arrow key to decrease screen brightness and contrast.

• Press [SHIFT] key again when desired brightness is reached (status indicator light above [SHIFT]

should now be off).

The Tech 2 should return to normal operation after following the above steps.

Figure III-14
Tech 2 keypad

Figure III-15
Location of control keys

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SECTION III GETTING STARTED

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Soft Keys

Four soft keys are located directly below the Tech 2 screen (Figure III-16). The soft keys correspond
directly to the four possible selection boxes found at the bottom region of the Tech 2 screen. These
selections may change from screen to screen and are under the control of the application software. To
make a screen selection, press the corresponding soft key. In the example shown in Figure III-17, the first
soft key was pressed to select [Display Time].

Figure III-16
Location of soft keys

Figure III-17
Soft key selection for display time

Selection Keys

The Tech 2 selection keys are four directional arrow keys (Figure III-18). Press the arrow keys to move the
highlighted area to a selection on the screen (Figure III-19) or to scroll the screens if more than one. Once
the desired selection is highlighted, press [ENTER] to activate the selection.

Figure III-18
Location of selection keys

Figure III-19
Positioning the highlighted area to make a selection

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SECTION III GETTING STARTED

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Action Keys

Action keys are used to respond to a specific question, initiate an action, or to exit from the Tech 2
program (Figure III-20). Specific “yes or no” questions will often appear on the Tech 2 screen. The [YES]
and [NO] keys are used to respond to these questions. Either of the two [ENTER] keys may be pressed to
activate a menu selection. Either of the two [EXIT] keys may be pressed to leave the current Tech 2
screen and return to a previous screen.

Figure III-20
Location of action keys

Function Keys

Ten function keys (F0 to F9) are located on the Tech 2 keypad (Figure III-21). A function key may be
pressed to initiate a specific Tech 2 function. In some cases the function keys are used for numeric data
entry. The arrow keys and [ENTER] may also be used to initiate a function selection, but this will require
multiple keystrokes as opposed to only one.

Figure III-21
Location of function keys

Help Key

The help key [?] may be pressed at any time to obtain a help screen (Figure III-22). The help screen will
provide specific information relating to the operation of the Tech 2.

Figure III-22
Location of help key

2005 Tech 2 User’s Guide III - 7

SECTION III GETTING STARTED

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Tech 2 Connection to Vehicle

The Tech 2 receives power through the DLC cable connection to vehicles equipped with On-Board
Diagnostics (OBD II) (Figure III-23). In the case of vehicles not equipped with OBD II, an external power
source such as a vehicle cigarette lighter must be used (Figure III-24).

Figure III-23
Attaching the Tech 2 to OBD II equipped vehicles

Figure III-24
Attaching the Tech 2 to non-OBD II equipped vehicles

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SECTION III GETTING STARTED

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Tech 2 Connection to Techline Terminal

At times the Tech 2 will need to be connected to a terminal. Reasons for connection to a terminal include
the following:

• Transfer of vehicle data (calibration information, “snapshot,” etc.) from the Tech 2 to the terminal

• Transfer of vehicle calibration data from the terminal to the Tech 2

• Transfer of data (software update, etc.) from the terminal to the Tech 2

Before connecting Tech 2 to the terminal, the following steps should be taken:

• Make sure the RS-232 cable (P/N 3000110) is attached to the Tech 2 RS-232 port located on the left

side of the Tech 2 (Figure III-1 and Figure V-3).

• Make sure the appropriate power supply is connected to the DLC cable power jack connector, or to the

power jack connector at the bottom of the Tech 2 (Figure III-25).

• Make sure the PCMCIA card is fully inserted into the upper slot at the top of the Tech 2 (Figure III-8,

Figure III-9 and Figure III-10).

• Make sure the CANdi module is not connected to the Tech 2.

NOTICE

Always use the Tech 2 NAO power supply (P/N 3000113) when connecting the Tech 2 to a terminal. It is
also acceptable to connect the power cable to the vehicle cigarette lighter receptacle.

Figure III-25
Power supply connections for communication with computer terminals

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SECTION III GETTING STARTED

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How to Connect the Tech 2 to a Computer Terminal

Follow the steps below and refer to Figure III-26, which illustrates the typical Tech 2 connection to a
computer terminal.

1. Plug the serial port adapter (P/N TA00040) into the serial port marked “A” or “1” on the back of the
computer terminal or to the USB port using the USB serial adapter.

2. Plug the Tech 2’s RS-232 cable into the serial port / USB port adapter and connect the appropriate
power supply.

3. After power is supplied to the Tech 2 and the [PWR] button is pressed, the Tech 2 start-up display
should appear on the Tech 2 screen (Figure III-27).

Figure III-26
Typical Tech 2 connection to a computer terminal (rear view)

Figure III-27
Tech 2 displaying the Tech 2 start-up screen

2005 Tech 2 User’s Guide III - 10

SECTION IV POWER SUPPLIES

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Power Supplies

Power up the Tech 2 using either:

• The power jack connector at the bottom of the Tech 2 unit (Figure IV-1), or

• The DLC cable power jack connector behind the area where various DLC adapters are connected

(Figure IV-1).

For non-vehicle communications, connect power source to either location.
For vehicle communications, connect the power source to the DLC cable power jack connector only.

Proper grounding may not be present if power source is connected directly to Tech 2.
When the Tech 2 is connected to the DLC of an appropriate vehicle, the vehicle battery supplies power.

When the Tech 2 is not connected to the vehicle’s DLC, the DLC cable power jack connector accepts
power from the following:

• Cigarette lighter power cable (Figure IV-1, see text on page IV-2)

• Battery power cable (Figure IV-1, see text on page IV-2)

• NAO or Universal power supply (Figure IV-1 and Figure IV-2, see text on page IV-3)

If the DLC and external power source are both connected, the power jack connection supplies current to
the Tech 2. In this instance, power from the vehicle’s DLC connector is automatically disconnected from
the Tech 2 internal power supply.

Figure IV-1
Tech 2 power connections (without direct power connection from the DLC)

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Cigarette Lighter Power Cable

This cable contains one fuse and two connectors. It has a cigarette lighter plug at one end and a power
jack at the other (Figure IV-1). The power jack connects to the Tech 2 DLC cable and carries power to the
Tech 2 when the selected vehicle adapter does not provide power.

Battery Power Cable

This cable has red and black battery clamps attached to one end and a power jack attached to the other
(Figure IV-1). The power jack connects to the Tech 2 DLC cable and carries current to the Tech 2 when the
selected vehicle adapter does not provide power and there is no cigarette lighter adapter available.

Important: This cable contains two 3-amp fuses. If you need to replace them, use identical 3-amp fuses.

For information on fuse replacement, see Section VI - Troubleshooting.

2005 Tech 2 User’s Guide IV - 2

SECTION IV POWER SUPPLIES

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NAO Power Supply

North American electrical supply is normally 110 volts. The Tech 2 base kit includes an external AC to DC
power supply with 110 V AC/60 Hz input (Figure IV-2). Output is 12 volts at 1.5 amps.

Universal Power Supply

Wherever 220 current is required, use the 110/220 V AC/50 Hz external AC to DC power supply
(Figure IV-2). A specific power cord is provided to permit connection to your area’s power cord receptacle.

Figure IV-2
Tech 2 power supplies (NAO and Universal)

CAUTION

To avoid personal injury due to electric shock, use grounded outlet only. The NAO power supply
is for North American use only. The Universal power supply is for use outside North America.
These devices are intended for indoor use only.

Power Cord Plugs

Various types of power cord plugs are available for the Tech 2, depending your geographic location
(Figure IV-3).

Figure IV-3
Table showing various types of power cord plugs for the Tech 2

2005 Tech 2 User’s Guide IV - 3

SECTION V ADAPTERS

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Adapters

A number of adapters are available for the Tech 2 which allow connection to many different vehicles
(Figure V-1 and Figure V-2). Specific adapters are included in the Tech 2 base kit depending upon Tech 2
configuration—NAO, International, Saab, Opel, Vauxhall, etc. Adapters not included in the base kit may be
purchased separately from your tool distributor.

DLC Cable

The DLC cable (P/N 3000095) has a 26-pin connector with thumb screws at one end that connects to the
Tech 2’s VCI cable connector. At the other end is a 19-pin connector that connects to a variety of adapters
(Figure V-1 and Figure V-2).

Figure V-1
DLC cable adapter connections

Figure V-2
Table showing various adapters and their part numbers

RS-232 Cable

The RS-232 cable (P/N 3000110) has an 8-pin RJ45 plug connector at each end (Figure V-3). This cable
attaches to the Tech 2 RS-232 port and is used to communicate with the Techline terminal.

Figure V-3
RS-232 cable connections

2005 Tech 2 User’s Guide V - 1

SECTION V ADAPTERS

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RS-232 DB9 Adapter

The RS-232 DB9 adapter (P/N 3000111) has an RJ45 connector at one end and a DB9 connector at the
other (Figure V-4). This adapter allows the connection of the Tech 2 to some terminals.

Figure V-4
RS-232 DB9 adapter connections

RS-232 Loopback Adapter

The loopback adapter (P/N 3000112) has an 8-pin RJ45 connector that attaches to the Tech 2 RS-232
port (Figure III-2). It is used to perform the Tech 2 self test.

DLC Loopback Adapter

Various Tech 2 applications require the DLC loopback adapter (P/N 3000109), which has a Burndy cable
connection end and a VCI DB-26 connection end (Figure V-5). Refer to pages III-1, III-2, VI-18, VII-69, and
figures I-2, III-4, III-7, and VI-4 for more information about this adapter.

Figure V-5
End views of the DLC loopback adapter

2005 Tech 2 User’s Guide V - 2

SECTION VI TROUBLESHOOTING

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Troubleshooting

Section VI is a general troubleshooting guide for all vehicle applications of the Tech 2 scan tool. Some of
the information may differ for your particular vehicle application.

If the Tech 2 appears to be operating abnormally, refer to this section—particularly the diagnostic charts
and troubleshooting tables beginning on page VI-6—for probable causes and solutions.

The following two types of self tests are available on the Tech 2:

• Power On Self Test (POST) checks the major functions of the Tech 2 at power-up.

• Self Tests check the major and minor functions of the Tech 2.

If errors are detected, a Tech 2 malfunction is present which may result in vehicle misdiagnosis.
For customer support, refer to the Customer Support Overview on pages ii and iii of this user’s guide.

NOTICE

The CANdi module should not be connected while running Tech 2 and VCI self tests.

2005 Tech 2 User’s Guide VI - 1

SECTION VI TROUBLESHOOTING

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Power On Self Test (POST)

Power On Self Tests run automatically each time the power [PWR] button on the Tech 2 keypad is pressed
on. The screen displays pass or fail results for each area tested. POST automatically checks the following:

• MC68332 processor

• External RAM (Random Access Memory)

• Flash memory

• Display controller and display

• Sound transducer

• MC68332 RAM

• Real-time clock

• Keypad controller and keypad

• Main UART (Universal Asynchronous Receiver/Transmitter)

Results of POST may include fatal errors that do not allow you to continue, or non-fatal errors that allow
you to continue without full Tech 2 operation. If normal Tech 2 functions are stopped or limited, contact
Customer Support to determine if service is required.

At completion of POST, the following audible signals indicate a pass or fail condition:

• One beep - No problem. Your Tech 2 is operating normally.

• No beep - Sound transducer has failed. Contact Customer Support.

• Three short beeps - Tech 2 has failed POST. Contact Customer Support.

In the United States and Canada to contact Customer Support, dial:

• English: 1-800-828-6860 (option 1)

• French: 1-800-503-3222

• Spanish: 1-248-265-0840 (option 2)

• Fax line: 1-248-265-9327

Refer to page iii for international customer support.

2005 Tech 2 User’s Guide VI - 2

SECTION VI TROUBLESHOOTING

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Tech 2 Self Tests

Tech 2 self tests verify that the Tech 2 is functioning normally. The self tests evaluate all critical areas of
the Tech 2 and display pass or fail messages for each subsystem tested. Self tests isolate user error from
system hardware failures. The self tests should be performed periodically to insure that the Tech 2 is
operating properly.

The Tech 2 must meet the following requirements in order to do a self test:

• Screen display must be fully readable

• Keypad must be operational

Begin the Tech 2 self-testing program by following these steps:

1. Press [ENTER] while viewing the Tech 2 start-up screen (Figure VI-1).

2. Select F3: Tool Options from the Tech 2 Main Menu (Figure VI-2).

3. Select F3: Self Test from the Tool Options menu (Figure VI-3).

Figure VI-1
Tech 2 startup screen

Figure VI-2
Tools Options selected on Main Menu

Figure VI-3
Self Test selected on Tool Options menu

2005 Tech 2 User’s Guide VI - 3

SECTION VI TROUBLESHOOTING

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Tech 2 Self Test Main Menu

Each Tech 2 Self Test main menu selection is explained in detail on the following pages. All users have
access to all the options listed, which are shown in Figure VI-5.

Read all screen instructions and connect or disconnect the appropriate cables and loopback adapters.
Screen messages will be displayed when external loopback connectors are connected. For specific
loopback connection information, refer to Figure III-2, Figure III-4, and Figure VI-4.

F0: Automated Main PCB and VCI Test

Selecting Automated Main PCB and VCI (Figure VI-5) is a quick way to test the performance of the main
Printed Circuit Board (main PCB—the Tech 2 main circuit board) and the Vehicle Communications
Interface (VCI). The Tech 2 displays a test-in-progress screen (Figure VI-6) while performing all the PCB
and VCI tests in sequential order.

Figure VI-4
Connection of DLC loopback adapter to the Tech 2 VCI connector

Figure VI-5
Automated Main PCB and VCI test selected on Tech 2 Self Test main menu

Figure VI-6
Automated Main PCB and VCI test results screen

Continued on next page...

2005 Tech 2 User’s Guide VI - 4

SECTION VI TROUBLESHOOTING

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The Automated Main PCB portion tests the following components:

• RAM / ROM

• RS-485 loopback (This test requires the connection of a loopback adapter to the Tech 2.)

• RS-232 loopback (This test requires the connection of a loopback adapter to the Tech 2.)

• Keypad

• PCMCIA slot 1

• PCMCIA slot 2

• Display controller

• Sound transducer

• Real-time clock

Refer to figures VI-9 and VI-10 (next page) for help in diagnosing problems that involve the PCB and VCI.
If the Tech 2 passes all Automated Main PCB and VCI tests, you will not need to run any more tests to

verify that the Tech 2 is working properly.
The following test results will be displayed:

Total Pass................................1 - indicates that Tech 2 passed test

Total Failures ...........................0 - indicates that Tech 2 passed test

PCMCIA Cards Present...........1 or 2 indicates how many cards present in Tech 2

Once tests are complete, select the soft keys Main Details or VCI Details (Figure VI-6) to review the
results of the main PCB or VCI tests (Figure VI-7 and Figure VI-8).

If any failures occur, select F3: Selectable Main PCB (Figure VI-13) or F4: Selectable VCI (Figure VI-15)
from the Self Test main menu to further isolate the failure. Report failure information to Customer Support.

0 - indicates a test failure

1 - indicates a test failure

2005 Tech 2 User’s Guide VI - 5

SECTION VI TROUBLESHOOTING

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F1: Automated Main PCB Test

This test works the same as the Automated Main PCB and VCI test, except the VCI portion of the test is
not included (Figure VI-11).

F2: Automated VCI Test

This test works the same as the Automated Main PCB and VCI test, except the PCB portion of the test is
not included (Figure VI-12).

Figure VI-7
Main Details selection

Figure VI-8
VCI Details selection

Figure VI-9
Diagnostic chart for Tech 2 Main Printed Circuit Board (PCB)

Figure VI-10
Diagnostic chart for Tech 2 Vehicle Communications Interface (VCI) module

Figure VI-11
Automated Main PCB test selected on Tech 2 Self Test main menu

Figure VI-12
Automated VCI test selected on Tech 2 Self Test main menu

2005 Tech 2 User’s Guide VI - 6

SECTION VI TROUBLESHOOTING

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F3: Selectable Main PCB Test

Choose F3: Selectable Main PCB (Figure VI-13) after a fail message has been displayed during the
Automated Main PCB and VCI or Automated Main PCB tests. When you choose F3: Selectable Main
PCB, a screen like the one shown in Figure VI-14 is displayed. You may then select individual tests for
failed components. For specific information on failed components, refer to the Main Printed Circuit Board
(PCB) Diagnostic Chart (Figure VI-9).

Figure VI-13
Selectable Main PCB test selected on Tech 2 Self Test main menu

Figure VI-14
Selectable Main PCB Self Test screen

2005 Tech 2 User’s Guide VI - 7

SECTION VI TROUBLESHOOTING

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F4: Selectable VCI Test

Choose F4: Selectable VCI (Figure VI-15) after a fail message has been displayed during the Automated
Main PCB and VCI or Automated VCI tests. When you choose F4: Selectable VCI, a screen like the one
shown in Figure VI-16 is displayed. You may select individual tests for failed components from this screen.
If you select More Tests, a screen like the one shown in Figure VI-17 is displayed. If you then select
Previous Menu, the screen shown in Figure VI-16 returns. For specific information on failed components,
refer to the Vehicle Communications Interface (VCI) Module Diagnostic Chart (Figure VI-10).

F5: Power On Self Test Results

Choose F5: Power On Self Test Results (Figure VI-18) after a fail message has been displayed during the
Power On Self Test (POST). Specific information on the failure will be displayed on the screen. Select F0,
F1, F2, F3, or F4 to further isolate the specific fault.

Figure VI-15
Selectable VCI test selected on Tech 2 Self Test main menu

Figure VI-16
First selectable VCI Self Test screen

Figure VI-17
Second selectable VCI Self Test screen

Figure VI-18
Power On Self Test Results selected on Tech 2 Self Test main menu

2005 Tech 2 User’s Guide VI - 8

SECTION VI TROUBLESHOOTING

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No Power to Tech 2 Troubleshooting Tables

Use the following four tables—Figure VI-19, Figure VI-20, Figure VI-21 , and Figure VI-22—to diagnose,
isolate, and correct power source problems that may cause a No Power condition to your Tech 2 scan tool.
To help determine power supply source, see Section IV - Power Supplies.

Figure VI-19
Troubleshooting table for DLC cable “No Power”

Figure VI-20
Troubleshooting table for cigarette lighter power cable “No Power”

Figure VI-21
Troubleshooting table for battery power cable “No Power”

Figure VI-22
Troubleshooting table for NAO or universal power supply “No Power”

2005 Tech 2 User’s Guide VI - 9

SECTION VI TROUBLESHOOTING

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Cigarette Lighter Power Cable 3-Amp Fuse Replacement

A three-amp removable fuse is located in the cigarette lighter power cable (P/N 3000096) connector
(Figure VI-23). When required, check or replace the fuse by performing the following steps:

1. Ensure cigarette lighter power cable is not connected to vehicle or Tech 2.

2. Unscrew fuse retainer cap and remove three-amp fuse.

3. Inspect fuse for damage and replace with identical three-amp fuse if required.

4. Verify by connecting cigarette lighter power cable to Tech 2 and vehicle.

Figure VI-23
Cigarette lighter power cable three-amp fuse replacement

2005 Tech 2 User’s Guide VI - 10

SECTION VI TROUBLESHOOTING

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Battery Power Cable 3-Amp Fuse Replacement

Two three-amp fuses are located in the battery power cable (P/N 3000097) three-amp fuse box
(Figure VI-24). When required, check or replace the fuse(s) by performing the following steps:

1. Ensure battery power cable is not connected to vehicle battery or Tech 2.

2. Use a standard fuse puller to remove the fuse(s) from the fuse box.

3. Inspect fuse(s) for damage and replace with identical 3-amp fuse(s) if required.

4. Verify by connecting battery power cable to Tech 2 and vehicle battery.

Figure VI-24
Battery power cable three-amp fuse replacement

CAUTION:

To help avoid personal injury by electric shock, make sure the battery power cable is not
connected to the vehicle’s battery before removing the fuse(s).

2005 Tech 2 User’s Guide VI - 11

SECTION VI TROUBLESHOOTING

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CANdi Module Troubleshooting

The following troubleshooting information applies only to the CANdi module. This application is
unavailable for most vehicles at the time of writing.

Figure VI-25 shows the screen that the Tech 2 displays during programming of the CANdi module.

If the Tech 2 loses power during programming, the CANdi module will not be properly programmed. The
CANdi module will be automatically reprogrammed when power is available.

Figure VI-25
CANdi module programming screen

If a fault occurs during reprogramming, a screen like the one shown in Figure VI-26 may appear. If this
occurs, power off the Tech 2 and attempt to reprogram the CANdi module again. If the problem persists,
incorrect CANdi software may be present on the Tech 2 PCMCIA card. Connect the Tech 2 to the TIS
terminal and download a new version of the software.

Figure VI-26
CANdi fault screen

NOTE: Do not perform a VCI self-test while the CANdi module is connected. If the CANdi module is

Continued on next page...

connected and an error screen occurs, disconnect the CANdi module from the Tech 2 and
perform the test again.

2005 Tech 2 User’s Guide VI - 12

SECTION VI TROUBLESHOOTING

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The screen shown in Figure VI-27 is displayed when the Tech 2 does not detect the CANdi module. This
can occur under the following conditions:

• The CANdi module is not connected to the Tech 2, or

• A problem occurred during start-up that prevented the Tech 2 from configuring the CANdi module.

If this occurs, power the Tech 2 off and start again. If the problem persists, follow the troubleshooting tests
on page VI-15.

It is also possible to connect a CANdi module after the Tech 2 has been powered up via the VCI. If this
occurs, the Tech 2 will not detect CANdi module and will not properly communicate, even if the LED is
flashing on the CANdi module. Power off the Tech 2 and start again.

Figure VI-27
CANdi module not detected screen

The screen displayed in Figure VI-28 occurs when the Tech 2 loses communication with the CANdi
module. This could be a result of the following:

• VCI not properly seated in the Tech 2 slot

• DLC cable not properly connected

• Poor Burndy cable connection to the CANdi module

• Worn or damaged cable that results in a poor connection between the CANdi module and the VCI

If this occurs, check all Tech 2 and CANdi module connections, power off the Tech 2 and start again.
If problem persists perform the troubleshooting tests on page VI-15.

Figure VI-28
Tech 2 lost communication with the CANdi module screen

2005 Tech 2 User’s Guide VI - 13

SECTION VI TROUBLESHOOTING

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CANdi Module Diagnostics

Select “CANdi Diagnostics” from the Tech 2’s Tools Options menu (Figure VI-29), and the screen shown in

Figure VI-30 appears. If the CANdi module is not connected, the screen shown in Figure VI-27 appears.

Figure VI-29
CANdi Diagnostics selected on Tool Options menu

Figure VI-30
CANdi Diagnostics menu: “POST Results” or “Self Test”

When you select “POST Results” from the CANdi Diagnostics menu (Figure VI-30), the screen shown in

Figure VI-31 appears. You can use the information to determine if the CANdi module had any problems

during its start-up sequence. Software and hardware revision numbers are identified and displayed.

Figure VI-31
CANdi POST Results screen

Selecting “Self Test” from the CANdi Diagnostics menu (Figure VI-30) initiates a complete test of the
CANdi module. When testing is complete, all results are displayed on the screen shown in Figure VI-32.

Figure VI-32
CANdi Self Test Results screen

2005 Tech 2 User’s Guide VI - 14

SECTION VI TROUBLESHOOTING

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CANdi Module Troubleshooting Guide

If a CANdi module is not functioning properly, please perform the following tests:

1. Make sure the CANdi module is properly grounded by connecting to a vehicle or by using the 12-pin
ALDL connector, which has the signal and chassis ground shorted.

IMPORTANT

If not properly grounded, the CANdi module will appear to be defective when it is not. The CANdi
module will fail due to improper grounding if you use the 16-pin DLC (J-1962) connector and power the
Tech 2 from an AC/DC power supply. The adapter you use must have a GM part number. Although PVI
adapters are similar to GM adapters, they will not work with the CANdi module.

2. Verify that the Tech 2 passes all stand-alone self-tests. Replace the Tech 2 if it fails. If the Tech 2
passes, proceed to step three. The CANdi module must be disconnected to run self-tests. If the
CANdi module is connected, a message will appear instructing you to disconnect the module.

3. Verify that the VCI passes self-tests. Replace the VCI if it fails. If the VCI passes, proceed to step four.

The CANdi module must be disconnected to run self-tests. If the CANdi module is connected, a

message will appear instructing you to disconnect the module.
When performing this test, you must also perform the Selectable VCI test (option F4 on the self-test

menu—see Figure VI-15). First install the Burndy loopback adapter into the VCI 26-pin connector,
which does not require the cable. Once you select “Selectable VCI,” select the “More Tests” soft key
(Figure VI-16). In the new submenu, select “F6: VCI TPU” (Figure VI-17). If the VCI passes the test, all
the TPU channels will display a Pass indicator as shown in the example at the top of the next page.

Continued on next page...

2005 Tech 2 User’s Guide VI - 15

SECTION VI TROUBLESHOOTING

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Testing St atus

TPU0 Pass
TPU1 Pass
TPU5 Pass
TPU12 and 15 Pass
TPU13 and 14 Pass

The two TPU inputs that the CANdi module requires are TPU12 and TPU15, which enable the module
and detect its presence. If TPU12 and 15 do not appear on the screen, then they are defective in the
VCI module and the VCI is failing to properly enable the CANdi module. If the above test passes, you
must repeat the same test with the Burndy loopback adapter at the end of the cable. The setup is the
same as if you were plugging into a vehicle without the CANdi module connected and with the loopback
adapter at the end of the cable. Then you must run the VCI TPU test. If the example above appears
(TPU13 and 14 are missing in this test because these I/Os don’t go through the cable), then the cable
is also fine. However, if TPU12 and 15 are missing, then the cable is defective.

4. Verify that the DLC cable (also known as the ALDL, J-1962, or OBDII interface cable) is functioning
properly and then proceed to step five. Replace the DLC cable if it does not function properly. Call the
Techline Customer Support Center (TCSC) at 1-800-828-6860 for more information if you have trouble
with this test.

Continued on next page...

2005 Tech 2 User’s Guide VI - 16

SECTION VI TROUBLESHOOTING

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5. Connect the CANdi module to the Tech 2. Connect the system (Tech 2 and CANdi module) to a vehicle
and power on the Tech 2. Verify that the LED on the CANdi module is flashing.

If the LED does not flash or light up at all, it may be defective and you should proceed to step six.
If the LED is not flashing but illuminated, a bad ground may exist somewhere. The grounding problem

could be due to a defective ALDL (J-1962) female interface on the vehicle. Power the Tech 2 through an
AC/DC power supply and connect the 12-pin ALDL connector. If this fixes the problem with the CANdi
(the LED is flashing), then the vehicle has a grounding problem and the CANdi module is OK.

If the LED is flashing while connected to the vehicle, but the CANdi module still has a problem, proceed
to step six.

6. If problems persist with the CANdi module, and the Tech 2 recognizes the interface, perform self-test
diagnostics on the CANdi module. Select CANdi Diagnostics from the Tool Options menu (Figure VI-29)
to see the CANdi Diagnostics menu (Figure VI-30). This menu allows you to display POST results, or
request the CANdi module to perform a self-test. Refer to page VI-14 for more information.

If a diagnostic test fails, return the CANdi module to the repair center (see page VI-18).

Contact the Customer Support Center at 1-800-828-6860 before returning the CANdi module.

If a known problem with a software version is identified, Customer Support will inform you to update
Tech 2 software with the correct software version number.

2005 Tech 2 User’s Guide VI - 17

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Replacing the CANdi Module

If CANdi fails and Customer Support (800-828-6860) has verified that it needs to be replaced, package the
CANdi module and send it freight prepaid to the nearest Vetronix Warranty Repair Center, as listed below.

Vetronix Warranty Repair Centers:

United States and Latin America

Vetronix Corporation
2030 Alameda Padre Serra
Santa Barbara, CA 93103
U.S.A. - [phone], Fax [phone]

Canada

Custone Electromotive Inc.
1150 Champlain Court
Whitby, ON L2N 6A8
Canada

Europe

Getronics Service GmbH/Frankfort
Philipp-Reis Strasse 15
D-63128 Dietzenback
Germany

Please enclose your telephone number, return address, and an explanation of the problem. If the product
is determined to be in warranty, it will be repaired or replaced at no charge and returned freight prepaid.
If determined to be non-warranty, the product will be repaired for a nominal service fee, plus freight costs.

Part numbers - CANdi module: J-45289 (SPX), 3000164 (GM), 02003039 (Vetronix)

Connectors: 12-pin #3000099 and loop back #3000109

2005 Tech 2 User’s Guide VI - 18

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Additional CANdi Troubleshooting Tips

Transformer voltage output test using DVOM:

• Set DVOM to Volt setting.

• Probe cable end inside and outside the terminal.

• Twelve volts is the minimum.

Updating the CANdi module:

IMPORTANT

You must use a 32-megabyte (32-MB) PCMCIA card in the Tech 2, not a 10-megabyte (10-MB) card.
You must update the 32-MB PCMCIA card

Always disconnect the CANdi module from the Tech 2 before downloading software updates to
the PCMCIA card.

The CANdi module is capable of storing up to three different software versions.

• Will the CANdi module require updates?

Possibly. The CANdi module ships complete with software, but possibly not the most current version.

• Be sure to update the Tech 2 with the latest software before using the CANdi module.

The CANdi module will compare software and look for a possible update from the Tech 2. When you
update the Tech 2, any software updates for the CANdi module will download to the PCMCIA card.
The CANdi module will automatically receive updates each time it is connected to the DLC and Tech 2 at
power-up. Therefore, it is very important that you always run the latest available software version when
using the CANdi module.

before connecting the CANdi module to the Tech 2.

2005 Tech 2 User’s Guide VI - 19

SECTION VII SOFTWARE

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Software

Section VII contains a description of software related to the Tech 2 in four subsections:

A) Tech 2 Main Menu and Live Plot, beginning on page VII-2
B) Techline Information System (TIS), beginning on page VII-14
C) Service Programming System (SPS), beginning on page VII-36
D) Controller Area Network Diagnostic Interface (CANdi), beginning on page VII-67

IMPORTANT

Proper PCMCIA updates are required and are essential for successful vehicle diagnoses. Refer to the

Programming Tech 2 function under Tool Options, and the Tech 2 PCMCIA Card in the Techline

Information System (TIS) subsection.

2005 Tech 2 User’s Guide VII - 1

SECTION VIIA TECH 2 MAIN MENU & LIVE PLOT

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Tech 2 Main Menu

Five primary functions or “paths” are available on the Tech 2’s Main Menu:

Diagnostics, Service Programming System, View Captured Data, Tool Options, and Getting Started are all

described in more detail on the following pages.

Figure VIIA-1
Tech 2 Main Menu

2005 Tech 2 User’s Guide VII - 2

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Diagnostics

Selecting Diagnostics from the Tech 2 Main Menu and identifying the vehicle as shown below gives you
access to four major systems: Powertrain, Body, Chassis, and Diagnostic Circuit Check (Figure VIIA-2).

F0: DIAGNOSTICS



Vehicle Identification:

Select Model Year

1991-2003



Select Vehicle Type

Passenger Car

LD Trk, MPV, Incomplete

Medium Duty Truck, Saturn

Figure VIIA-2
System Selection Menu



Select System

   

F0: F1: F2: F3:

Powertrain Body Chassis Diagnostic Circuit Check

2005 Tech 2 User’s Guide VII - 3

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Service Programming System

Selecting Service Programming System from the Tech 2 Main Menu leads to selections shown below.
Refer also to Section VIIC.

F1: SERVICE PROGRAMMING

(for remote programming only)



Request Info.



Continue (soft key) with Instructions



Vehicle Identification:

Salesmake(s)



Model Y ear(s)



Vehicle Type(s)



Model (body , style)



Continue (soft key) with Instructions



VIN Verification (Y/N)



Procedural Instructions Screen

View Captured Data

Selecting View Captured Data from the Tech 2 Main Menu results in the selections shown below.

F2: VIEW CAPTURED DATA

 

Capture Info Snapshot

 Select Items, Plot, Select Frame, Auto Reverse, Stop, Auto Forward

F0: DTC Information First Frame, Trigger Frame, Last Frame, Units, Previous Frame,

F1: Freeze Frame / Failure Records Next Frame DTC, Previous DTC-Chg, Next DTC-Chg

Live Plot - Change Min/Max, Zoom In-Out

2005 Tech 2 User’s Guide VII - 4

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Tool Options

Selecting Tool Options from the Tech 2 Main Menu (see Figure VI-2) gives you the Tool Options menu
(Figure VIIA-3), leading to 10 major selections, as follows:

F3: TOOL OPTIONS

↓↓

↓

↓↓

F0: Set Clock

F1: Set Screen Contrast

F2: Set Units

(Metric or English)

F3: Self Test

F4: Set Training Center Mode

(Instructor or Student)

F5: Programming Tech 2

F6: Set Communication By-Pass Mode

These features—described in more detail on the following pages—are useful for controlling various Tech 2
settings including the self tests and CANdi diagnostics.

Figure VIIA-3
Tool Options menu

Tool Options continued on next page...

F7: Make Duplicate PCMCIA Card

F8: Set Language

F9: CANdi Diagnostics

2005 Tech 2 User’s Guide VII - 5

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F0: Set Clock

After you select F0: Set Clock from the Tool Options menu (Figure VIIA-3) and the Set Real-Time Clock
menu (Figure VIIA-4) appears, you can set the internal Tech 2 real-time clock in two ways:

1. Use the up and down arrow keys to move the cursor to desired selection. Press [ENTER] to change the
value. Each time [ENTER] is pressed the value will be increased by one unit until a preset maximum
unit is reached. Once all correct values are entered, press the Set Clock soft key to save all changes.

2. Use the function key of the desired selection to change an incorrect value. Each time the function key is
pressed the value will be increased by one unit until a preset maximum is reached. Once all correct
values are entered, press the Set Clock soft key to save all changes.

Figure VIIA-4
Set Real-Time Clock menu

Tool Options continued on next page...

2005 Tech 2 User’s Guide VII - 6

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F1: Set Screen Contrast

Selecting F1: Set Screen Contrast reveals a Set Contrast Control screen (Figure VIIA-5) that instructs
you on how to set and save the screen contrast to optimize the tool’s visibility in your lighting conditions.

IMPORTANT

The Set Contrast Control tool option adjusts the permanent default contrast setting of Tech 2 display.

Because of the nature of the LCD (Liquid Crystal Display), you will experience some contrast variance.
When the temperature of the Tech 2 increases the display will brighten slightly. As the temperature of the
Tech 2 decreases, the display will darken. This variance is a characteristic of an LCD screen and should
be considered normal operation.

The screen contrast control setting described above may not account for the entire variance of operating
temperatures. Set a default setting which is mid-range between the operating temperatures. Screen
contrast may be adjusted during any function by pressing the SHIFT key and using the up and down
arrows for adjustment. Periodic adjustments may be necessary, but settings outside of this application are
only retained during the current power-up session.

Figure VIIA-5
Set Contrast Control screen

Tool Options continued on next page...

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F2: Set Units

When you select the F2: Set Units option, a Set Units screen will appear (Figure VIIA-6). Use the up and
down arrow keys to change the Current Units Setting from English to Metric or vice versa, if desired. Press
[ENTER] to save your setting as the default.

Figure VIIA-6
Set Units screen

F3: Self Test

Selecting F3: Self Test gives you access to the Tech 2 Self Test menu screen ( Figure VI-5), which will help
you to verify that the Tech 2 is functioning normally. Refer to Section VI - Troubleshooting for more
information on this area.

Power Down Screen. After completion of any Self Test, return to the Tech 2 Self Test menu screen. After
pressing [EXIT], a screen will appear instructing you to turn the Tech 2 power off (Figure VIIA-7). Turn off
the Tech 2 and turn back on to continue.

Figure VIIA-7
Tech 2 power down screen

Tool Options continued on next page...

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F4: Set Training Center Mode

After you select F4: Set Training Center Mode—for GM Training Centers only—a Set Training Center
Mode screen appears (Figure VIIA-8), giving you the ability to connect multiple Tech 2 scan tools for
instructional purposes.

Figure VIIA-8
Set Training Center Mode screen

F5: Programming Tech 2

After you select F5: Programming Tech 2, you can follow the on-screen instructions (Figure VIIA-9) for
downloading from a PC to the Tech 2 scan tool via the RS-232 cable. Refer also to Software Download,
Tech 2 PCMCIA Card, and Tech 2 Update Procedure later in this section.

Figure VIIA-9
Programming Tech 2 screen

F6: Set Communication By-Pass Mode

When you select F6: Set Communication By-Pass Mode, the upcoming screen (Figure VIIA-10) offers
Disable and Enable options. By enabling the by-pass mode, the Tech 2 bypasses error handling and
allows the user to view data display information without being connected to a vehicle. Highlight the desired
setting using the up or down arrow keys, then press [ENTER] to change the current mode. The Tech 2 will
default to the Disable mode after it has been powered off.

Figure VIIA-10
Set Communication By-Pass Mode screen

Tool Options continued on next page...

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F7: Make Duplicate PCMCIA Card

After you select the F7: Make Duplicate PCMCIA Card option, which enables you to duplicate current
PCMCIA card data, the display will ask you to insert the destination card (the PCMCIA card that you want
to update) into the open PCMCIA card slot, then press [ENTER] to continue. The PCMCIA Card Duplicator
screen (Figure VIIA-11) will appear, showing the current version of both cards. The highlighted areas on
the screen represent the locations of the source and destination PCMCIA cards, and the arrows indicate
the direction of the data flow. Slot 1 is defined as the slot closest to the Tech 2 display. Use the Copy soft
key to initiate the duplication process.

If the card capacity is too small (less than 32 megabytes), a screen like the one shown in Figure VIIA-12
will appear. Insert a 32-megabyte PCMCIA card to resolve the problem.

Figure VIIA-11
PCMCIA Card Duplicator screen displaying card data for both Tech 2 slots

Figure VIIA-12
PCMCIA Card Duplicator screen displaying “Card Too Small” message

F8: Set Language

The F8: Set Language option enables you to set your language preference.

F9: CANdi Diagnostics

When you select F9: CANdi Diagnostics (a function limited to certain vehicles), the CANdi Diagnostics
screen (Figure VI-30) appears and you may perform a complete diagnosis of the CANdi module.

Refer to Section VI and Section VIID for more detail on CANdi diagnostics.

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Getting Started

Selecting Getting Started from the Tech 2 Main Menu (Figure VIIA-13) reveals the Getting Started Menu
(Figure VIIA-14), which provides an on-line overview of the Tech 2 and useful operation information.

The following options are available from the Getting Started Menu.
F0: Tool Controls - Selecting an option from the Tool Controls Menu (Figure VIIA-15) will give you

information on Tech 2 help functions, key pad layout, screen contrast control, and soft keys.
F1: Hardware - The Hardware Menu (Figure VIIA-16) offers information on screen display, VCI module

removal, PCMCIA card removal and installation, cables/adapters and power connections, prop rod and
hand straps, and RS-232 and RS-485 ports.

F2: Tech 2 Features - This selection displays a vehicle information entry sequence for a fictitious vehicle
(Figure VIIA-17).

F3: Programming Tech 2 - This option provides instructions for downloading from a PC to the Tech 2
scan tool. Due to a specific sequence of events in the evolution of the Tech 2, this option duplicates the
Programming Tech 2 function of the Tool Options Menu, as described on page VII-9.

Figure VIIA-13
Getting Started selected on Main Menu

Figure VIIA-14
Getting Started Menu

Figure VIIA-15
Tool Controls Menu

Figure VIIA-16
Hardware Menu

Figure VIIA-17
Tech 2 Features screen

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Live Plot

Live Plot is a Tech 2 feature that allows data display parameters to be graphed in real time as it happens.
The Live Plot function will allow up to three parameters to be plotted on a graph at one time. The data of
these parameters will be plotted as the information is received on the Tech 2 from the vehicle. This may
aid in the diagnosis of an intermittent vehicle condition by enabling the user to view data from the vehicle
graphically. Any spikes or drops on the graph can be analyzed immediately. Previously, data had to be
captured before it could be plotted. The Live Plot application is available from the Data Display, Quick
Snapshot, and Snapshot applications on the Tech 2.

SCREEN DISPLAY SAMPLES:

1. Select F0: Diagnostics from the Tech 2 Main Menu (Figure VIIA-1), “build” the vehicle, and select a
system—powertrain, body, or chassis (refer to page VII-3).

2. From Data Display, select the More soft key twice to bring
up the Live Plot soft key.

3. Once up to three parameters are selected, select Accept to
see a graph of the data.

4. All of the features on the resulting graph are available while
Live Plot is functioning. Pressing the More soft key leads to
options that allow the user to zoom in and out on the plotted
graph 50 frames at a time and change the min/max values of
a highlighted data parameter.

Live Plot example continued on next page...

Figure VIIA-18
“Live Plot” soft key on data screen

Figure VIIA-19
“Accept” soft key on data screen

Figure VIIA-20
Live Plot screen soft key options

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5. Using soft keys, the min/max values of a highlighted data
parameter can be edited in several ways.

a. Selecting Change Min/Max allows the minimum and

maximum values of a data parameter to be changed.

b. Edit Min and Edit Max enables the keypad to be used to

set the minimum and maximum values respectively. The
value also can be assigned a positive or negative value.

c. Selecting Learn and Learn All allows the Tech 2 to learn

the min/max values of a highlighted parameter or of all
selected parameters.

d. Selecting Restore Default restores the default min/max

values of the highlighted parameter.

6. To stop the plot function for analysis, select Pause. Resume
will restart the Live Plot.

7. To switch the display mode from Live Plot display back to a
text display, select the More soft key twice from the Live Plot
graph and then select Data List.

Figure VIIA-21
Live Plot screen soft key options

Figure VIIA-22
Min/Max Adjustment screen

Figure VIIA-23
“Learn” and “Learn All” soft keys
on Min/Max Adjustment screen

Figure VIIA-24
Live Plot “Resume” soft key

Figure VIIA-25
Live Plot “Data List” soft key

8. From the Snapshot standby mode, the Live Plot function also
is available by selecting the More soft key. While viewing
Live Plot, a snapshot also can be triggered the same way it
is in the Snapshot mode.

NOTE: Be sure to update your Tech 2 with the latest TIS software as soon as it is available.

Figure VIIA-26
Data Snapshot Record screen

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Techline Information System (TIS)

Techline Information System (TIS) is a component-oriented service information delivery system that allows
technicians to perform SPS, update the Tech 2, and view Tech 2 snapshot data in a Windows
environment. Refer to the model of a Techline information system in Figure VIIB-1.

Figure VIIB-1
Techline information system overview

TIS Application Selection and Toolbar Options

Launch Techline Information System (TIS) from your terminal by double clicking the TIS icon.
This will open the TIS Application Selection screen (Figure VIIB-2). An indicator light in the lower
right corner of the screen turns green when the PC is ready for input, and red when the PC is not.

TIS has four major applications: Tech 2 View, Service Programming System (SPS), Software Download,
and Snapshot Upload/Display. Subsection VIIB of this guide covers the Tech 2 View, Software Download
and Snapshot applications. Subsection VIIC covers the SPS application.

The following icons are located on the TIS toolbar (Figure VIIB-3):

• Exit TIS. Quits TIS and returns to the Desktop screen.

• Selection Page. Returns to TIS main screen, leaving current application open in background.

• Vehicle Context. Opens the Display Vehicle Data screen.

• Close Active Application. Quits the current application and returns to TIS main screen.

• Print a Screendump. Produces a printout of whatever is on the screen.

• TIS Newsletter. Provides overview of latest software changes.

• Help. Launches TIS’s built-in Help program.

Figure VIIB-2
TIS Application Selection main screen

Figure VIIB-3
TIS toolbar icons

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Tech 2 View

Tech 2 View is an application that enables you to view Tech 2 screens on your PC. Tech 2 View can aid
Technical Assistance when diagnosing tool problems and can also be useful in Tech 2 training classes.

Double-click the Tech 2 View icon on the TIS main screen (Figure VIIB-2) and follow the on-screen
directions.

Software Download

The Software Download function of TIS is used to update the Tech 2 scan tool software to the latest
version. Like all computers, the Tech 2 scan tool stores software that determines how it runs and what it
can do. This software allows the scan tool to perform diagnostic routines on or for the following vehicle
applications: Powertrain, Body, Chassis, and Service Programming.

Scan tool software is regularly updated to reflect changes in vehicle engineering or diagnostics. As
changes to the scan tool software are developed, they are released to the dealership through a satellite
broadcast or a data CD in a stand-alone environment. Scan tool software updates can include new vehicle
and system coverage, updates to original application releases, and fixes to known software concerns.

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Tech 2 PCMCIA Card

NOTICE

The PCMCIA card is sensitive to magnetism and static electricity. Use care when handling.

IMPORTANT

The PCMCIA card is accessed through a door on top of the Tech 2, and should only be removed if
instructed by the Techline Customer Support Center. The card is ejected by pushing the arrow button
pointing to card to be removed. Cards are notched to allow insertion only one way. When reinserting
the card make sure that it fully seats into the Tech 2. The PCMCIA card fits into Slot 1, which is closest
to the screen. The second slot is identified as Slot 2.

The Tech 2 software is stored on a Personal Computer Memory Card Industry Association (PCMCIA) card.
All of the applications share a single database on the PCMCIA card. Refer to Figure III-8 (ejection of
PCMCIA card), Figure III-9 (PCMCIA card keying), and Figure III-10 (PCMCIA card insertion).

The card can store at least two snapshots and one Capture Info data file. This allows analysis of
intermittent conditions on a vehicle being serviced.

A write-protect slide mechanism is on the top edge of the card—usually under a white plastic CPA-type
device on new cards. If the write-protect slide mechanism is in the locked position, you will not be able to
store snapshots or captured information, and service programming will not work. The correct position is at
the middle of the card (unlocked).

PCMCIA Card continued on next page...

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J-45080 32-MB PCMCIA Card

Background:

When the Tech 2 was introduced in 1996, it was equipped with a 10-MB (10-megabyte) PCMCIA card,
which had 10 times the capacity of the original mass storage cartridge of the Tech 1. The 10-MB card was
installed in Slot 1, closest to the screen, with Slot 2 reserved for future use.

Vehicle on-board computer capabilities multiply with each new model year, and the Tech 2 has had to keep
pace. The capacity of the 10-MB card reached its limits, and it was time to expand again.

Why a larger memory card was needed:

The memory card contains diagnostic and reprogramming applications, and space for vehicle calibrations.
As the functions of the Tech 2 expand, more space is needed for new diagnostic applications.

For convenience, coverage of the 1991 to 2003 vehicles is being retained, and capacity is being added to
accommodate upcoming model years.

Acquiring additional memory cards:

Call Kent-Moore Tools at 1-800-345-2233 to order replacement cards for additional units, or to obtain
further information about this product.

IMPORTANT

The Tech 2 requires a 32-MB card called a linear flash card. The low-priced 32-MB cards called “strata
flash cards”—available on Internet sites—will not work in the Tech 2.

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Tech 2 Standard Update Procedure

To perform a standard Tech 2 update:

1. Connect the scan tool to the PC using the RS-232 cable (refer to the illustration in Figure VIIB-4).

2. Power up the scan tool using the AC power supply that came with the tool (refer to Figure VIIB-4).

3. At the PC, launch TIS.

4. From the TIS main screen (Figure VIIB-2), select Software Download.

5. At the “Select Diagnostic Tool for Download” screen, select Tech 2 and “Standard” (Figure VIIB-5) to
install the newest software on the scan tool. After confirming the selection, select Next. A message will
appear indicating the PC is reading the contents of the diagnostic tool.

6. The PC will display a “Confirm Software Change” screen (Figure VIIB-6) showing what the Tech 2
currently contains and what it will contain after the download. Click Next to continue.

IMPORTANT

Clicking Next at the “Confirm Software Change” screen will initiate the download. Be sure the correct
file has been selected before clicking Next.

Figure VIIB-4
Tech 2 to computer connection

Figure VIIB-5
Standard update selected on the “Select
Diagnostic Tool for Download” screen

Standard Tech 2 Update continued on next page...

Figure VIIB-6
“Confirm Software Change” screen

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7. A “Performing the Software Download” screen appears (Figure VIIB-7) to display the progress of the
download.

8. When the download is complete, a “Download Finished” screen appears (Figure VIIB-8). Select Close
to close the application. The scan tool now contains the latest software.

Figure VIIB-7
“Performing the Software Download” screen

Figure VIIB-8
“Download Finished” screen

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Tech 2 Custom Update Procedure

To perform a custom Tech 2 update to backdate the scan tool or install different language software:

1. Connect the scan tool to the PC using the RS-232 cable (refer to the illustration in Figure VIIB-4).

2. Power up the scan tool using the AC power supply that came with the tool (refer to Figure VIIB-4).

3. At the PC, launch TIS.

4. From the TIS main screen, select Software Download.

5. At the “Select Diagnostic Tool for Download” screen, select Tech 2 and “Custom” (Figure VIIB-9) to
allow backdating or installing of non-NAO software on the scan tool. After confirming the selection,
select Next. A message will appear indicating the PC is reading the contents of the diagnostic tool.

6. A “Select the Applications” screen (Figure VIIB-10) appears. The left side of the screen lists software
release numbers. Select the “+” sign to see the list of languages for each release (Figure VIIB-11).

7. Select the desired software version and language either by double-clicking on it or by highlighting the
desired language file; then click Select in the middle of the screen. The selected software will appear in
the right side of the screen (Figure VIIB-12). Click on the tabs to compare the current and selected
scan tool software. Click Download to proceed.

8. A “Performing the Software Download” screen appears (Figure VIIB-7) to track the download status.

9. When the download is complete, a “Download Finished” screen appears (Figure VIIB-8). Click Close to
close the application.

Figure VIIB-9
Custom update mode selected for download

Figure VIIB-10
Applications available for custom download

Figure VIIB-11
Language files available for download

Figure VIIB-12
Software selected for download

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Snapshot Upload / Display

The Snapshot Upload/Display function of TIS provides a means for viewing scan tool snapshot data, as
well as freeze frame and capture info data on the PC. This data can be analyzed in a variety of ways to
determine when and where a fault may have occurred.

Using the Snapshot display feature involves three steps:

1. Capture snapshot(s) with the scan tool.

2. Upload the snapshot(s) to the terminal.

3. View the snapshot(s) using the TIS Snapshot Upload/Display function.
The following procedures describe how to capture, upload and view a snapshot.

Capturing a Snapshot of the Vehicle Data Stream

1. Connect the Tech 2 to the vehicle Data Link Connector (DLC) as shown in Figure III-23.

2. Power up the Tech 2 and press the ENTER key at the title screen (Figure VI-1).

3. From the Main Menu select F0: Diagnostics (Figure VIIA-1).

4. Enter all vehicle information as requested on the scan tool's display (powertrain, body, chassis).

5. From the application menu, select F3: Snapshot.

• At the next screen, select the desired system to snapshot (e.g. Engine, Transmission, ATC).

• At the next screen, select the desired data list (e.g. Engine Data 1, Engine Data 2, EGR Data).

• At the next screen, select trigger type and trigger point, as described on the next page. Note that
your choices may be limited depending on the application.

Capturing a Snapshot steps continued on next page...

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Trigger Type (F0 - F3 function keys) determines how the snapshot is triggered:

F0: Manual Trigger triggers a snapshot when you press the Trigger soft key.
F1: Any Code triggers a snapshot whenever any current trouble code is stored. This event occurs

when the first code is stored in the vehicle controller memory.

F2: Single Code triggers a snapshot when a user specified trouble code is stored.
F3: Automatic Trigger (chassis applications only) automatically triggers a snapshot.

Trigger Point (F4 - F6 function keys) is the exact point at which the trouble code (fault) or manual

trigger occurs within the snapshot period. It helps to know the trigger point when you are looking for
changes in data parameters. Trigger point may be set for:

F4: Beginning causes the Tech 2 to start recording information from the trigger point until

snapshot storage is full. This choice is useful if the fault is predictable.

F5: Center is the most commonly used trigger point because it stores information leading up to

and following the trigger point. This function allows comparison of events before, during, and
after a fault.

6. Press the Record Snapshot soft key. The Tech 2 screen will display the flashing message “standby.”

• When the fault occurs, press the Trigger soft key.

• The Tech 2 will display the message “triggered.”

• Allow the scan tool to record a sufficient amount of data, then press [EXIT] to store the snapshot data.

• Press the Continue soft key when the snapshot trigger type screen is displayed.

7. Exit to the Main Menu, then power down and disconnect the Tech 2 from the vehicle.

F6: End sets the trigger point at the end of the snapshot recording and therefore shows only

information leading up to and including the fault.

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Uploading the Snapshot to the PC

After a snapshot has been successfully captured, perform the following steps to upload it from the scan
tool to the computer.

1. Launch TIS.

2. Select Snapshot Upload/Display from the TIS main screen (Figure VIIB-2).

3. Select the “Upload from Handheld” box in the center of the screen (Figure VIIB-13),

or select the

Upload from Handheld icon on the Snapshot toolbar (refer to Figure VIIB-15).

4. Select Tech 2 on the “Upload from a Handheld Device” window, verify that the Tech 2 is connected to
the terminal, and then select OK (Figure VIIB-14).

5. Select the snapshot to be uploaded, then select OK.

6. After the snapshot uploads, a list of data parameters will display on the monitor (Figure VIIB-15).

For instructions on viewing a snapshot after it has been uploaded, refer to the next page.

Figure VIIB-13
“Upload from Handheld” option shown on Snapshot Upload/Display screen

Figure VIIB-14
On-screen instructions for uploading from a handheld device

Figure VIIB-15
Snapshot Upload/Display screen (two-column mode) with toolbar and playback details defined

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Viewing the Snapshot

After a snapshot has been uploaded (either from disk or the scan tool), it can be viewed and analyzed in a
variety of ways. Figure VIIB-15 identifies the different display icons and replay selections.

Replaying the Snapshot

To replay a snapshot, use the row of icons in the lower left-hand corner of the screen (see Figure VIIB-15).
The selections and their functions are as follows:

• First Frame. Displays the first frame of the snapshot, regardless of which frame was displayed prior to

selection.

• Reverse One Frame. Displays the frame immediately preceding the one currently displayed.

• Play in Reverse. Causes the snapshot to continuously play in reverse until the first frame is displayed.

• Trigger Frame. Causes the display to move to the exact frame when the snapshot was triggered,

regardless of which frame was displayed before the item was selected.

• Play Forward. Causes the snapshot to continuously play forward until the last frame is reached.

• Forward One Frame. Moves the snapshot forward to the next frame.

• Last Frame. Displays the last frame in the snapshot.

• Stop Play. Stops a continuous play snapshot at the frame displayed at the time of selection.

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Single-Column vs. Two-Column Display

The two-column and single-column icons in the toolbar change the appearance of data parameters.

• Two-Column Mode (refer to Figure VIIB-15) displays a double list. When using the two-column mode,

the maximum number of characters of any one line is 80.

• Single-Column Mode (refer to Figure VIIB-16) lists data parameters in a single column using larger

type, which makes the data easier to read at a distance.

A default (single- or two-column mode) can be set by selecting Options from the menu bar.

Figure VIIB-16
Snapshot single-column display mode

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Displaying Diagnostic Trouble Codes

The View Diagnostic Trouble Code Information mode displays all relevant trouble code information for
each individual frame. Note that when replaying a snapshot, every frame of the snapshot may not have a
stored DTC.

To use the DTC display feature:

1. Select the View DTC Information icon on the Snapshot toolbar. A box will appear near the top of the
screen listing DTC information (see Figure VIIB-17). The following information is provided:

• The first line indicates how many codes are in the frame—e.g. “1 of 2,” “2 of 2,” etc. This is not the

total number of DTCs stored in the entire snapshot, just in the individual frame being displayed.

• Below the first line is the number and name of the DTC.

• Diagnostic test status tells whether the test ran and whether it passed or failed.

• DTC status lists the DTC information. This is the status of the tests that were run and the related DTC

messages that can be viewed by the technician. This information is based only on the DTC
information listed, since some DTC information will not be available on all applications.

2. If more than one DTC is set for a frame, scroll bars will appear at the right side of the DTC window. To
view other DTCs (Figure VIIB-18), click-and-drag the scroll box or use the scroll arrows.

Figure VIIB-17
“View DTC Information” icon selected on the Snapshot toolbar

Figure VIIB-18
DTC display mode (“2 of 4”)

Displaying DTCs continued on next page...

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3. To determine exactly when a DTC set during a snapshot, use the “Play Forward” and “Play in Reverse”
selections to play the snapshot with the DTC window still in view. DTC information will continue to
display for all the frames during which the DTC was set.

• This information can be useful for diagnosing DTCs by displaying related data parameters at the point

in time when the code was set.

 T I P 

The View DTC Information icon will be highlighted if a code was set during a snapshot.
Select the View DTC Information icon. This will show any and all DTCs set during the
snapshot, since DTCs are stored for the duration of the snapshot.

4. When a frame is reached for which a diagnostic trouble code does not exist, the DTC window will
display a blank.

 T I P 

In most snapshots, DTCs set near the trigger frame. To quickly locate the frame where
a DTC occurred, click on the “Trigger Frame” selection. Then use the “Forward One
Frame” or “Reverse One Frame” selections to view the frames just before and after the
trigger frame. Chances are the DTC will appear within these frames. If not, continue
viewing the snapshot using the “Play Forward” or “Play in Reverse” selections.

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Diagnostic Trouble Code Change Mode

This feature allows the user to move from trouble code to trouble code within the snapshot. If you select
the View DTC Information icon, when in a snapshot the Snapshot application will display a split screen.
This screen will consist of the DTC information on the upper half of the screen and the parameter data
display on the lower half of the screen (Figure VIIB-18).

If the DTC was not set in the selected frame of the snapshot, the DTC information will not display until the
snapshot is advanced to the first frame in which the DTC was set. Select the Diagnostic Trouble Code
Change icon (Figure VIIB-19) to advance to the first frame of the DTC. In DTC change mode, selecting the
forward or reverse arrows will move the application to only the frames in which a DTC was set.

Figure VIIB-19
“DTC Change” icon selected while in DTC display mode

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Displaying Graphs

Graph display modes give you the ability to view snapshot parameters in graph form. This allows you to
see how a parameter functions over time. It also allows easy visual comparison of up to six parameters at
a single time. The two graph display modes are three-graph and six-graph (Figure VIIB-15).

Three-Graph Display

To access the three-graph display mode:

1. Click the Display Graph (three) icon (Figure VIIB-20).

2. Click on the first graph icon at the top of the Graph Parameters window (Figure VIIB-21), then select a
parameter from the list in the lower portion of the box. The parameter name will appear next to the first
graph icon.

3. Repeat this procedure for the second and third graphs.

IMPORTANT

When selecting parameters to be graphed, it is important to consider the values used to measure the
parameter, and to correctly plot these on the graphs. This is done in the “Min Y Axis Value” and “Max Y
Axis Value” fields. These may need to be adjusted to reflect the normal range of values for the
parameter — for example, 0 to 5 volts for MAP sensor.

Figure VIIB-20
“Display Graph” (three) icon selected

Displaying Graphs continued on next page...

Figure VIIB-21
Graph Parameters window

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4. When one to three desired parameters have been selected, click OK.

5. The screen changes to display the chosen parameters in graph form (Figure VIIB-22).

• Using the navigation icons, move through the parameters.

• Click and drag on the arrow along the bottom of each graph (Figure VIIB-22) to move through the

graph. This arrow represents the current frame being viewed. It is useful for pinpointing precisely
when a parameter change indicates a fault.

• A data value corresponding to the frame the arrow is pointing to will be displayed in the upper left

corner of each graph.

6. To select a different parameter to be graphed, simply click and hold on the parameter name in the data
list, then drag the cursor over one of the existing graphs and release the mouse button. The new
parameter will be graphed in place of the old one.

7. To view a graph at full-screen size, move the cursor over the graph. When the cursor changes to a
magnifying glass, click on the graph. The graph will appear at full-screen size (Figure VIIB-23). Click on
the full-size graph to return to the three-graph display.

Figure VIIB-22
Three-graph display screen

Six-Graph Display

Up to six parameters can be displayed on a single graph. Parameters are selected in the same manner as
described for three-graph display. Each parameter is color-coded (Figure VIIB-24), and you can change
the background color to improve visibility (compare Figure VIIB-23 with Figure VIIB-24).

Figure VIIB-24
Six-graph display screen showing “Display Graph” (six) icon selected

Figure VIIB-23
One graph at full-screen size

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Lock / Unlock Parameters

The Lock/Unlock Parameters function is used to isolate specific parameters so they can be viewed and
compared more easily than if they were part of the larger parameters list. To use this function:

1. Select (highlight) the desired parameter, then click the Lock/Unlock Parameters icon (Figure VIIB-25).
The selected parameter will appear at the top of the data list, above a “lock line” (Figure VIIB-26).

2. To add other parameters, follow the same procedure. The “locked” parameters can then be viewed
together to compare their data values. Parameters can also be locked by double-clicking on them in the
data list.

3. To remove an item from the locked list, select it, then click the Lock/Unlock Parameters icon. The item
will be removed from the list.

 T I P 

Figure VIIB-25
“Lock/Unlock Parameters” icon selected

Figure VIIB-26
Selected parameter shown above “lock line”

Display modes can be used in various combinations to provide the most useful
diagnostic capability. It is even possible to view DTC information, locked parameters,
and graphed parameters simultaneously (Figure VIIB-27). In multi-display mode,
replay selections can be used, as previously described, to move through the snapshot.

Figure VIIB-27
Multiple display modes

2005 Tech 2 User’s Guide VII - 31

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Viewing Capture Info Data

Capture Info is a feature that allows the Tech 2 to retrieve DTCs, Freeze Frame and Failure Records from
the vehicle’s control module. This is a different function than snapshot display. Capture Info files consist of
only one frame of data, whereas snapshots typically contain multiple frames of data.

When Capture Info is selected (refer to p. VII-4), the scan tool displays a menu selection that allows data
from the control module to be stored to the Tech 2 PCMCIA card, or to refresh the PCMCIA card with new
data from a control module.

IMPORTANT

A single code may be counted as two different codes in a Capture Info file if it exists both in freeze
frame and failure records (Figure VIIB-28).

To view DTCs, freeze frame or failure record data through TIS software:

1. Use the Tech 2 Capture Info function to retrieve data from a vehicle’s control module.

2. Connect the Tech 2 to the computer (Figure VIIB-4) and go to the Tech 2 start-up screen (Figure VI-1).

3. Launch TIS.

4. Select the Snapshot Upload/Display application.

Figure VIIB-28
Viewing Capture Info data on the Snapshot Upload/Display screen

Viewing Capture Info Data continued on next page...

2005 Tech 2 User’s Guide VII - 32

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5. Click the “Upload from Handheld” icon on the toolbar (Figure VIIB-15).

• Select Tech 2, then click OK.

• Select Capture Data from upload selection menu, then click OK.

6. The data will display on screen. The top of the screen lists DTCs that were stored in the control module.
The lower portion of the screen lists captured freeze frame or failure record data for the selected DTC.

• Notice that the navigation selections at the bottom of the screen are gray (cannot be selected)

because the data record consists of only one frame.

7. If more than one DTC is present, selecting a DTC in the list changes the data list to match that DTC.

8. Capture Info can be stored and printed by the PC.

9. The user may toggle on/off the DTC(s) at the top of the screen in order to view only the freeze frame or
fail record data by selecting the Show/Hide Failure Record Information icon (Figure VIIB-29) on the
toolbar. This icon is only active for the Capture Info Data function.

Figure VIIB-29
“Show/Hide Failure Record Information” icon selected

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Saving a Snapshot to Disk

If you wish to save a file that you’ve opened, click the Save Snapshot icon on the toolbar (Figure VIIB-30).
You then have the option of saving the file to the terminal’s hard drive, to a floppy disk, or to the server.

NOTICE

When inserting a floppy disk into the PC, it is recommended to run a virus check on the disk. This will
prevent computer viruses from getting onto the PC and possibly corrupting data. Windows software
includes a virus-checking utility located in the StartProgramsAccessoriesSystem Tools folder.

When saving a snapshot, the program automatically identifies the file by vehicle description.
This information is not always enough to describe the snapshot. To help identify the snapshot, type in
descriptive information about the snapshot when saving it (Figure VIIB-31). This can include vehicle
conditions, DTCs, symptoms, repair order, etc. The next time a file is opened, this information will aid
in locating the correct file.

Figure VIIB-30
“Save Snapshot” icon selected

Figure VIIB-31
Save a Snapshot to Disk window

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Printing a Snapshot

Printing can be accomplished in three ways:

1. Using the “Print” command in the File menu (Figure VIIB-32),

2. Using the “Print screendump” icon on the TIS toolbar (Figure VIIB-33),

3. Using the “Print” icon on the snapshot toolbar (Figure VIIB-34).

The “Print” commands produce a text listing of data parameters. The “Print screendump” icon produces a
full-page representation of what’s displayed on the monitor.

Figure VIIB-32
“Print” command selected from the File menu

Figure VIIB-33
“Prints a screendump” icon selected on TIS toolbar

Figure VIIB-34
“Print” icon selected on Snapshot toolbar

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The Service Programming System (SPS)

The Service Programming System (SPS) updates the flash calibration files that are stored in a vehicle
onboard controller (e.g. PCM, ABS, VTD). The calibration file custom-tailors a module to a certain vehicle.
The calibration file contains data for things such as spark curves and fuel control. When troubleshooting a
driveability condition, diagnosis may call for reprogramming the controller with newer calibration
information to correct a customer concern.

The ECM/PCM controller can generally use four types of serial communications:

• UART (Universal Asynchronous Receive and Transmit)

• Class 2

• Keyword

• CAN

– GM LAN (recent communications application currently available only on a few limited applications)

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VCI Number

A Vehicle Configuration Index (VCI) is a number representing a valid combination of parts and systems
built in a vehicle, including optional equipment. GM Service and Parts Operations uses VCI numbers to
identify a unique calibration or group of calibrations.

You will need a VCI number to access vehicle calibrations when reprogramming if the VIN of the vehicle is
not part of the TIS data, depending on the vehicle, if it has been reconfigured from its original build
specifications. Keep in mind that many calibrations for reconfiguring vehicles (adding/changing options,
such as fog lamps) are selectable in TIS and a VCI number is not necessary.

If the VIN is not part of the TIS data that is currently loaded, a TIS error message will state that the VIN is
incorrect or a VCI number is needed. If this is the case, make sure that the appropriate software version is
loaded to your terminal.

To check which TIS version you are using, select the Help menu, then select TIS Main Help and click
About TIS. The current data version will be listed along with the blockpoint version for North American
Operations (Figure VIIC-1).

A VCI number also allows you to program a vehicle that has been reconfigured from its original
configuration. This includes changes in tire sizes and axle ratios. When selecting Reconfigure from the
“Supported Controllers” screen in TIS, the calibrations that support various configurations are presented
as information only. To access those calibrations, you’ll need a VCI number.

The VCI number provides access to all of the latest calibrations available for the vehicle based on its VIN.
A VCI number does not allow you to access calibrations that are designated “Not Selectable.” It is

important to ensure you have the correct VCI number to access the calibrations before reprogramming.

Figure VIIC-1
About TIS window shown in foreground of TIS Application Selection screen

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Selecting the Right Calibration

When reprogramming a vehicle, selecting the right calibration is critical. You will only see calibrations that
are valid for the VIN entered. Be sure to check the history of each calibration. The history lists an
explanation of the calibration file, telling what the calibration is for and whether it supersedes any other
calibrations. It is helpful to read the latest bulletins to stay up to date on why certain calibrations have been
released. Related bulletin numbers are sometimes listed along with the calibration files.

Based on the calibration history and bulletins, select the appropriate calibration file. For many vehicles
equipped with VCMs, you’ll also need to complete the multiple tab selections. Each tab is for a distinct
calibration file contained in the VCM. An unchecked box on a system tab indicates that a necessary
selection has not been made.

If you need a VCI number, contact the Techline Customer Support Center (TCSC). Once you have the VCI
number, it must be entered in the entry screen when requested by the SPS.

The four main SPS methods are:

• Remote Programming

• Pass-Thru Programming

• Off-Board Remote Programming

• Off-Board Pass-Thru Programming

For a complete representation of the Tech 2 interface screens while performing remote SPS, see Tech 2
SPS User Interface Screens and Functionality on pages VII-47 to VII-49.

Regardless of the vehicle involved, the general three-part process for SPS programming is as follows:

1. Check the vehicle’s control module to determine which, if any, calibration file is currently stored.

2. Determine if an update is required.

3. Transfer the selected data to the vehicle’s control module.

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NOTICE

Prior to performing SPS, it is important to heed the following precautions:

• Using an outdated version could damage vehicle modules. The Tech 2 and the terminal must have the latest software.

• Make sure the vehicle battery is fully charged. Battery voltage for SPS should be between 12 and 14 volts. However, a
battery charger must not be connected to the vehicle when using the Tech 2.

• Make sure the cable connections are secure. A disconnected cable could cause controller failure.

• If you use a laptop computer for pass-thru programming, ensure that the power supply is properly connected.
If powered by AC and the power cord becomes disconnected, it could interrupt programming and cause damage to
the control module. If the laptop is operating from its internal power source (batteries), then make sure it is adequately
charged to complete the SPS process.

Remote SPS Programming

The Remote SPS method is a three-step process that involves:

1. Connecting the scan tool to the vehicle and obtaining information from the module.

2. Connecting the scan tool to the PC and downloading a new calibration file from the PC to the scan
tool’s memory.

3. Reconnecting the scan tool to the vehicle and uploading the new calibration file to the module.

IMPORTANT: TIS supports Service Programming with the Tech 2 scan tool only.

Off-Board Programming

Off-Board Programming is used when a reprogrammable control module must be programmed away from
the vehicle. This method requires the use of an Off-Board Programming Adapter (OBPA), J-41207-C.

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Performing Remote SPS

NOTICE

ECU to be programmed must be installed in the vehicle before beginning this process. Make sure the
battery is fully charged.

Perform remote SPS using TIS as follows: STEP 1: Obtain Vehicle Information (Request Info) from new ECU or an ECU to be programmed.

1.1 With the Tech 2 and vehicle both off, connect the Tech 2 to the vehicle DLC (Figure III-23).

1.2 Power on the Tech 2. At the Tech 2 title screen, press [ENTER].

1.3 Turn the vehicle ignition to the on position (engine off).

1.4 At the Tech 2 Main Menu, select Service Programming System (Figure VIIC-13).

1.5 Select “Request Info” on the Tech 2 (Figure VIIC-14).

IMPORTANT

If a VIN was previously stored in the Tech 2, press Request New Info (soft key), and follow the on­screen directions.

1.6 Follow the on-screen instructions. After the vehicle description is entered, turn off all power

consuming devices, then press Continue (soft key).

1.7 The Tech 2 reads the VIN, then displays the VIN and calibrations. The Tech 2 will ask “Is this VIN

correct?” Select Yes. (If the answer is No, write down the VIN number.)

1.8 When finished, press [EXIT], power down, and disconnect the Tech 2 from the vehicle. Turn the

vehicle ignition off.

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STEP 2: Transfer Data from the PC to the Tech 2

2.1 Connect the Tech 2 to the terminal, as shown in Figure VIIB-4.

2.2 At the terminal, launch TIS.

2.3 From the TIS main screen (Figure VIIB-2), select the Service Programming System icon.

2.4 At the Select Diagnostic Tool and Programming Process screen (Figure VIIC-2), make the

appropriate selection for your procedure:

• Under “Select Diagnostic Tool,” select Tech 2.
(You would select Information Only/PROM data to get calibrations for a particular vehicle without
using the Tech 2, or to get PROM data for vehicles that cannot be programmed. You would select
Pass-Thru to perform SPS without disconnection from the vehicle or the terminal.)

• Under “Select Programming Process,” select Reprogram ECU or Replace and Program ECU,
depending on whether you are reprogramming an existing module or replacing a module.

• Under “Select ECU Location,” select Vehicle or Off Board Programming Adapter (OBPA),
depending on whether you are performing on-vehicle or off-board programming.

2.5 After making selections, select Next.

2.6 Confirm connections and select Next on the Preparing for Communication screen (Figure VIIC-3).

Figure VIIC-2
Select Diagnostic Tool and Programming

IMPORTANT

If you answered NO to the VIN in step 1.7, a box may appear stating “The ECU could be a service
ECU.” Click OK.

Performing Remote SPS, Step 2, continued on next page...

Figure VIIC-3
Preparing for Communication screen

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2.7 A Validate VIN screen (Figure VIIC-4) will appear. After confirming and/or entering the correct VIN,
select Next.

2.8 A Supported Controllers screen (Figure VIIC-5) will appear asking you to identify the type of
controller being programmed. Some vehicles may have more than one programmable controller —
examples include PCM, BCM, IPC. Select the appropriate controller for the vehicle being serviced.

After selecting the controller to be programmed, identify the type of programming to be performed:

• Normal is used for updating an existing calibration or programming a new controller.

• For newer vehicles that do not have VINs in the database, VCI (Vehicle Configuration Index) is

used for updating an existing controller or programming a new controller. For these vehicles, you
will need to contact Techline Customer Support at 1-800-828-6860 for assistance.

• Reconfigure is used to reconfigure a vehicle, such as a truck, for changes in tire size & axle ratios.

2.9 After making selections, select Next.

Figure VIIC-4
Validate Vehicle Identification Number screen

Figure VIIC-5
Supported Controllers screen

IMPORTANT

If bulletins are listed together with the calibration files, refer to these service bulletins before performing
service programming.

IMPORTANT

Select Cancel if you receive a message stating that the calibration selected is already the current
calibration in the control module, and reprogramming with the same software calibrations is not allowed.

Performing Remote SPS, Step 2, continued on next page...

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2.10 A Calibration Selection screen will appear showing the calibration file history for the vehicle or
controller being serviced. The screen displays a description for each calibration file. Select the
appropriate file based on these descriptions.

• Vehicles with PCMs will display a screen similar to the one shown in Figure VIIC-6. It contains a

single “tab” that summarizes all calibration files for the vehicle.

• Vehicles with VCMs will display a screen similar to the one shown in Figure VIIC-7. It contains

multiple “tabs” — one for each distinct calibration file contained in the VCM. For these vehicles,
you must make a selection within each tab. Otherwise, the system will display the message like
the one shown in Figure VIIC-8 indicating that not all selections have been made. (Notice the
unchecked box on the “System” tab.)

The following icons appear on the calibration selection screen:

• A circle with a slash () indicates a file that is not selectable.

• An open box () indicates a file that is selectable.

• A box with a check mark () indicates a valid file/option that has been selected.

• If service bulletins are listed along with the calibration files, the bulletins should be referred to

Then select Next.

Figure VIIC-6
PCM calibration file selection

Figure VIIC-7
VCM calibration file selection

Figure VIIC-8
Incomplete calibration selection message

Performing Remote SPS, Step 2, continued on next page...

before service programming is performed.

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2.11 After making the necessary selections, a Summary screen will appear (Figure VIIC-9) allowing you
to confirm your selection. Select Next to continue.

Note: If calibrations are the same, the NAODRUI Control box appears (Figure VIIC-10) stating that

the calibrations selected are already the current calibrations in the control module. Click OK
and Back out or click Cancel on the Summary screen.

2.12 The application will automatically initiate the download of the new calibration file to the Tech 2, and a
Transfer Data screen (Figure VIIC-11) will track the progress of the download.

2.13 After the download is complete, a Program Controller screen (Figure VIIC-12) will appear with
instructions for connecting the Tech 2 to the vehicle to complete the programming process.
Close the application to return to the TIS Application Selection screen, then power down and
disconnect the Tech 2 from the PC.

Controller Specific Instructions.

If “Crankshaft Position Variation Relearn Procedure” appears under “Controller Specific
Instructions,” you must perform this procedure after reprogramming the PCM/VCM.
Refer to Service Manual DTC P1336 or P315CKP (System Variation Not Learned) for this
procedure.

Figure VIIC-9
SPS Summary screen to confirm calibration

Figure VIIC-10
NAODRUI Control box

Figure VIIC-11
SPS Transfer Data screen

Figure VIIC-12
SPS Program Controller screen

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STEP 3: Transfer Data from the Tech 2 to the Control Module

3.1 With the Tech 2 and vehicle both off, connect the Tech 2 to the vehicle DLC (Figure III-23).

3.2 Power on the Tech 2. At the Tech 2 title screen, press [ENTER].

3.3 Turn the vehicle ignition to the “on” position (engine off).

3.4 At the Tech 2 Main Menu, select Service Programming System (Figure VIIC-13).

3.5 Select "F1: Program ECU" on the Tech 2 (Figure VIIC-22). The Tech 2 will display the new
programming data — VIN and software numbers (Figure VIIC-23). Verify, then select the soft key
Continue. The Tech 2 will display the "Programming in Progress - Downloading calibration file"
screen (Figure VIIC-24).

3.6 When the transfer is complete, the Tech 2 will display the message “Programming Was Successful.”
Press the Continue soft key to exit the program. Turn the vehicle ignition off first, then turn the Tech
2 off and disconnect it from the vehicle.

Be sure to verify successful reprogramming. Refer to the recommendations on the next page.

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Verifying Reprogramming

After any kind of control module programming, verify that programming was successful:
Turn the ignition off, wait at least 30 seconds, then start the vehicle to confirm that reprogramming was

successful. If the vehicle does not start or starts but runs rough, repeat the SPS procedure.

IMPORTANT

Some vehicles will require that Idle Learn, TP Learn, Theft Deterrent Relearn, or Crankshaft Variation
Learn procedures be performed after programming. Consult the appropriate service information for
these procedures.

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Tech 2 SPS User Interface Screens and Functionality

Overview

This section is a representation of the Tech 2 Service Programming System (SPS) user interface screen
application. User interface screens that could be encountered during the execution of Tech 2 remote SPS
are shown. The Tech 2 screen information is organized into two sections: Requesting Information and
Programming. Follow the steps to perform remote SPS using the Tech 2 scan tool and TIS software.

Requesting Information

1. At the Tech 2 title screen, select Enter. To execute the SPS application, press F1 on the Tech 2 keypad

or highlight Service Programming System on the Main Menu screen (Figure VIIC-13), then press
Enter.

2. At the Request Information screen (Figure VIIC-14), press F0 or Enter.

Note: ECU to be programmed must be installed before requesting information.

3. At the Salesmake(s) screen (Figure VIIC-15), highlight one of the salesmakes, then select Enter.

Note: Information entered incorrectly may result in programming errors.

Figure VIIC-13
Tech 2 Main Menu screen with SPS selected

Figure VIIC-14
Request Info screen

Figure VIIC-15
Salesmake(s) screen

Tech 2 SPS Screens and Functionality continued on next page...

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4. At the Model Year(s) screen (Figure VIIC-16), highlight the appropriate year, then select Enter.

5. At the Vehicle Type(s) screen (Figure VIIC-17), highlight the vehicle type, then select Enter.

6. At the Vehicle Identification screen (Figure VIIC-18), highlight the vehicle type, then select Enter.

Note: Some vehicle builds may have additional option screens.

7. Figure VIIC-19 shows a Tech 2 procedure screen. Follow the on-screen instructions. Failure to do this

may result in programming errors. After following on-screen instructions, press the Continue softkey.

8. The Existing ECU Data screen (Figure VIIC-20) displays a VIN and software calibration number(s). It

also asks if the VIN is correct. Select either Yes or No using the Tech 2 keys. In this example, Yes is
selected.
Note: If No is selected, follow all on-screen instructions. After going to the PC, continue with step 10.

9. Figure VIIC-21 shows another Tech 2 Existing ECU Data information screen. Follow the on-screen

instructions: Turn off the ignition. Disconnect the Tech 2 from the vehicle and connect it to the PC.

Figure VIIC-16
Model Year(s) screen

Figure VIIC-17
Vehicle Type(s) screen

Figure VIIC-18
Vehicle Identification option screen

Tech 2 SPS Screens and Functionality continued on next page...

Figure VIIC-19
Tech 2 SPS procedure screen

Figure VIIC-20
Existing ECU Data screen

Figure VIIC-21
Instructions on ECU Data screen

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Programming

10. After downloading information from the PC to the Tech 2, return to the vehicle. At the Tech 2 title

screen, select Enter. To execute the SPS application, press F1 on the Tech 2 keypad or highlight
Service Programming System on the Main Menu screen (Figure VIIC-13), then press Enter. Select F1
or highlight Program ECU, then select Enter (Figure VIIC-22).

11. The New Programming Data screen that appears next (Figure VIIC-23) contains VIN and software

calibration numbers. Verify that the VIN is correct, then press the Continue softkey.

12. At the next Tech 2 SPS screen (Figure VIIC-19), follow the on-screen instructions: Turn off all power

consuming devices. Turn the ignition on with the engine off. Make sure the battery is fully charged.
Then press the Continue softkey.

13. “Please wait,” may briefly appear as programming begins. A percentage bar will track the progress of

the download (Figure VIIC-24).

14. When programming is complete, the Programming Was Successful screen appears (Figure VIIC-25).

Turn off the ignition and press the Continue softkey.

NOTE: Error screens you may encounter are shown in figures VIIC-26 and VIIC-27.

Figure VIIC-22
Program ECU option selected

Figure VIIC-23
New Programming Data

Figure VIIC-24
Programming in Progress

Figure VIIC-25
Programming Was Successful

Figure VIIC-26
Programming failed!

Figure VIIC-27
Tech 2 SPS Error - No Communications with
Vehicle instructional screen

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Performing Pass-Thru Programming

Pass-thru programming allows the scan tool to remain connected to the terminal and to the vehicle
throughout the programming process. The vehicle must be in close proximity to the terminal while using
pass-thru programming (see Figure VIIC-28).

Figure VIIC-28
Vehicle to terminal pass-thru connection

IMPORTANT: TIS supports Service Programming with the Tech 2 scan tool only.

Pass-Thru Programming Procedure

1. Launch TIS.

2. From the TIS main screen (Figure VIIB-2), select the Service Programming System icon.

3. At the Select Diagnostic Tool and Programming Process screen (Figure VIIC-29):

• Select Pass-Thru under “Select Diagnostic Tool.”

• Under “Select Programming Process,” select Reprogram ECU or Replace and Program ECU,
depending on whether you are reprogramming an existing module or replacing a module.

• Under “Select ECU Location,” select Vehicle or Off Board Programming Adapter (OBPA), depending
on whether you are performing on-vehicle or off-board programming.

• Select Next.

Figure VIIC-29
Select Diagnostic Tool and Programming Process screen showing selections appropriate for pass-thru

Pass-Thru Programming continued on next page...

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