This entire document and all information contained herein are proprietary, confidential, and exclusive trade
secret property of Vetronix Corporation, and shall not be reproduced, duplicated, or copied in whole or in
part, or made available to any person, firm, or corporation without the prior written permission of Vetronix
Corporation.
CUSTOMER SUPPORT OVERVIEW
To obtain assistance with a question or problem concerning the operation of your Vetronix product and its
attached products, or to arrange for warranty and non-warranty repairs, telephone the Vetronix Customer
Support Center. To order replacement parts, contact Vetronix Customer Service.
BEFORE CALLING
Before making a call to Customer Support:
•Name and address
•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, which:
•Tells when the problem occurred
•Lists any error codes displayed
•Tells what accessories were being used when the problem occurred, and vehicle information
MAKING THE CALL
The Vetronix Customer Support Center operates from 7:30 a.m. to 4:30 p.m. (Pacific standard time)
Monday to Friday.
In the United States and Canada to contact Customer Support, dial:
•English1-800-321-4889
A Vetronix 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 Vetronix 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.
TECH 2 USER’S GUIDE
This user’s guide is designed to provide a comprehensive overview of the Tech 2.
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 the Vetronix Corp. This includes all text, illustrations, tables, and
charts.
Requests for permission should be sent to:
Vetronix Corp.
2030 Alameda Padre Serra
Santa Barbara, CA 93103-1716
U.S.A.
DECLARATION OF CONFORMITY
according to ISO/IEC Guide and EN 45014
Manufacturer’s Name:Vetronix Corporation
Manufacturer’s Address:Vetronix Corporation
2030 Alameda Padre Serra
Santa Barbara, CA 93105
declares, that the product
Product Name:Tech 2
Model Number(s):03006541-003
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
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 - 0.5 kV
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.
SOFTWARE LICENSE AGREEMENT
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: Vetronix Corp. may terminate this software license for failure to comply with any of
these terms provided Vetronix Corp. has requested Customer to cure the failure and Customer has failed
to do so within thirty (30) days of such notice.
LIMITED WARRANTY
SOFTWARE: VTX warrants for a period of ninety (90) days from the date of purchase that the VTX
software product will execute its programming instructions when properly installed. VTX does not warrant
that the operation of the VTX software will be uninterrupted or error free. In the event that this VTX
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: VTX 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 limitation or exclusion may not apply to you.
EXCLUSIVE REMEDIES: The remedies provided above are Customer’s sole and exclusive remedies. In
no event shall VTX 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.
To increase their effectiveness with the Tech 2, familiarize yourself with the format and information
contained in this guide.
VEHICLE SYSTEM FAMILIARITY
While the Tech 2 is a powerful tool, it cannot replace knowledge and skill. To get the most out of the Tech 2,
you must have a complete understanding of vehicle systems.
When using the Tech 2 to diagnose a vehicle, we recommend that you also refer to the service manual and
the latest service bulletins.
Te ch 2Page 1-1
Introduction
THINGS YOU SHOULD KNOW
CAUTION!
CAUTION
CAUTION!
CAUTION
When performing any checks with the engine running in an enclosed space
such as a garage, make sure there is proper ventilation. Never inhale
exhaust gases; they contain carbon monoxide, a colorless, odorless,
extremely dangerous gas that can cause unconsciousness or death.
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.
TECH 2 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.
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, in which case the user will be required to correct the interference at
his or her own expense.
Page 1-2Tech 2
Introduction
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.
CAUTION!
CAUTION
NOTE
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.
•Do NOT clasp battery clips 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 may
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.
•Do not connect the RS-232 and RS-485 ports to a direct phone line.
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.
TAKING THE PRODUCT BACK AND
RECYCLING
Applicable to product that is sold into the European Union, the European Union has passed a directive
called Waste Electrical and Electronic Equipment, or WEEE for short, to ensure that systems are setup
throughout the EU for the collection, treating and recycling of electronic waste.
Te ch 2Page 1-3
Introduction
This ensures that the devices are recycled in a resource-saving way representing no danger to health or the
environment.
FIGURE 1-1. WEEE Logo
The WEEE symbol (see Figure 1-1) on the product or its packaging shows that the product must not be
disposed of as residual garbage. The user is obliged to collect the old devices separately and return them to
the WEEE take-back system for recycling.
The WEEE directive concerns all Bosch devices but not external cables or batteries. For more information
on the Bosch GmbH Recycling Program, contact one of the Vetronix/Bosch Group sales and service
locations listed below.
Bulgaria
I.C Iletisim Teknolojileri Elek. San. Ve Tic. Ltd. Sti.
Bayar Cad. Bayar Is Merkezi NO: 109A D:8
81090 Kozyatagi, Istanbul
Turkey
Ireland
Advanced Diagnostics
Unit 5
Alliance Close
Attleborough Fields Industrial Estate
Nuneaton
Warwickshire, CV11 6SD
Romania
I.C Iletisim Teknolojileri Elek. San. Ve Tic. Ltd. Sti.
Bayar Cad. Bayar Is Merkezi NO: 109A D:8
81090 Kozyatagi, Istanbul
Turkey
The Tech 2 is a hand-held computer designed to aid in the diagnosis and repair of automotive systems with
electronic controls and interfaces.
POWER SUPPLY
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 some vehicles
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.
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
You can expect years of trouble-free service if you take reasonable care of the Tech 2 and follow the
maintenance procedures outlined in this chapter.
Page 1-6Tech 2
Display
Tilt stand
Adjustable strap
Keypad
VCI latching lever
Introduction
Power On/Off button
DLC Cable Connector
FIGURE 1-2. External Features of the Tech 2 (Front View)
MECHANICAL DIMENSIONS
The dimensions of the Tech 2 are as follows:
Width
Height
Depth
Wei ght
TABLE 1-1. Mechanical Dimensions
6.1 inches (155 mm)
11.8 inches (300 mm)
2.0 inches (55 mm)
2.2 pounds (1.0 kg)
Te ch 2Page 1-7
Introduction
ENVIRONMENTAL SPECIFICATIONS
ConditionsSpecifications
Operating:
Temperature
Non-Operating:-40º to 70ºC (-40º to 158ºF)
Operating:
Relative Humidity
Non-Operating:90% at 65ºC (non-condensing)
0º to 40ºC (32º to 104ºF)
15% to 95% at 40ºC (non-condensing)
TABLE 1-2.
WARRANTY
The Tech 2 is warranted against defects in materials and workmanship for 1 year. If your Tech 2 must be sent
in for repair, contact Customer Support (see inside front cover).
Important: This warranty does not cover any part that has been abused, altered, used for a 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.
Your Tech 2 is composed of a base kit and a variety of the following subcomponents:
After using the Tech 2, a few simple steps will insure that you get the most life out of this diagnostic tool.
NOTE
Although the Tech 2 is water resistant, it is not waterproof, so be sure to dry the Tech 2 thoroughly prior to
usage and/or storage.
Do not spray or pour cleaner anywhere on the Tech 2. If the Tech 2
becomes dirty, clean it with 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.
Maintenance of the Tech 2 requires periodic inspection and cleaning of the following:
•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.
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
the cloth across the display area.
Te ch 2Page 2-1
Care and Cleaning
CLEANING THE KEYPAD
Clean the keypad with a non-abrasive cleaner. Apply a small amount of cleaner on a soft cloth and wipe the
cloth across the 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.
Page 2-2Tech 2
3. GETTING STARTED
This section covers all Tech 2 vehicle applications and 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.
PCMCIA port
Power jack
connector
RS-485 port
FIGURE 3-1. Identification of the Tech 2’s External Ports
Te ch 2Page 3-1
RS-232 port
VCI connector
Getting Started
INITIAL HARDWARE INSTALLATION
The Tech 2 hardware initial installation requires the following steps:
1. Remove the RS-232 loopback adapter (P/N 02001606) from the storage case (P/N 02002971). Plug it
into the RS-232 port (Figure 3-2).
2. Attach the Tech 2 DLC cable (P/N 02002952) to the VCI connector (Figure 3-3).
3. Locate the DLC loopback adapter (P/N 02002953) in the storage case. Attach it to the DLC cable
(Figure 3-4).
4. Locate the NAO (P/N 02002972) power supply and appropriate power cord in the storage case. Insert
the power jack into the Tech 2 DLC cable (Figure 3-5) or into the bottom of the Tech 2 next to DLC
cable connector (Figure 3-6).
5. Turn on power by pressing the PWR button located on the Tech 2 key pad.
6. Tech 2 hardware is verified automatically by the POST Test (for information on this program, see
Chapter 6).
7. Disconnect the RS-232 loopback adapter, the power supply, and the DLC loopback adapter and return
to the Tech 2 storage case (Figure 3-7).
RS-232 port
RS-232 loopback
adapter
(P/N 02001606)
FIGURE 3-2. Connection of RS-232 Loopback Adapter to Tech 2 RS-232 Port
Page 3-2Tech 2
VCI Connector
Tech 2 DLC cable
(P/N 02002952)
Getting Started
FIGURE 3-3. Connection of Tech 2 DLC Cable to the VCI Connector
Tech 2 DLC cable
(P/N 02002952)
DLC loopback adapter
(P/N 02002953)
FIGURE 3-4. Connection of DLC Loopback Adapter to DLC Cable
Te ch 2Page 3-3
Getting Started
Tech 2 DLC cable
power jack connector
Power jack (NAO power supply)
FIGURE 3-5. Connection of Power Jack to Tech 2 DLC Cable
Tech 2 power jack connector
Power jack (NAO power supply)
FIGURE 3-6. Connection of Power Jack to the Bottom of Tech 2
Page 3-4Tech 2
DLC loopback adapter
(P/N 02002953)
Getting Started
Power jack
NAO power supply
(P/N 02002972)
RS-232 loopback adapter
(P/N 02001606)
FIGURE 3-7. Disconnection of RS-232 Loopback Adapter, DLC Loopback Adapter, and
Power Supply
NOTE
When using the Tech 2 for vehicle communications, the Tech 2 must be
powered with the cigarette lighter power cable (P/N 02002954) to ensure a
proper ground.
Tech 2 DLC cable
(P/N 02002952)
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 "up arrow button"
(located on the left hand side of the Tech 2) to eject the card (Figure 3-8).
Up arrow eject button
Empty lower PCMCIA slot
FIGURE 3-8. Ejection of PCMCIA Card
Te ch 2Page 3-5
Getting Started
CAUTION!
CAUTION
Use only Vetronix 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.
PCMCIA CARD INSERTION
The PCMCIA Card is keyed with two notches on one side and one notch on the other side (Figure 3-9).
Make sure that the notches are in the correct position before inserting the card. Slowly insert the card
(Figure 3-10) until it clicks into place.
Make sure the PCMCIA card is inserted into the upper slot. The card fits into both slots; however, if the card
is placed in the lower slot, the Tech 2 will not function properly.
Bottom side of Tech 2
Tech 2 door
FIGURE 3-9. PCMCIA Card Keying
Tech 2 PCMCIA card
FIGURE 3-10. PCMCIA Card Insertion
Tech 2 PCMCIA card
Page 3-6Tech 2
Getting Started
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. To remove the module disconnect Tech 2 DLC
cable if attached, move the lever (Figure 3-11) all the way toward the right side of the Tech 2 (Figure 3-12).
The VCI module can now be removed.
VCI module lever
VCI module
FIGURE 3-11. VCI Module Removal
VCI module lever
(moved all the way to the right)
FIGURE 3-12. VCI Model Removed
Te ch 2Page 3-7
Getting Started
HAND STRAP ADJUSTMENT
The Tech 2 velcro hand straps may be adjusted for individual needs as shown in Figure 3-13.
Velcro strap
FIGURE 3-13. Tech 2 Hand Strap Adjustment
Page 3-8Tech 2
TECH 2 KEYPAD
The Tech 2 keypad consists of six major keypad operation areas:
Soft keys
Getting Started
Selection (arrow) keys
Function keys (F0 - F9)
Help key
Action keys
(YES, NO,
ENTER, EXIT)
Control keys
(SHIFT, PWR)
FIGURE 3-14. Tech 2 Keypad
Te ch 2Page 3-9
Getting Started
CONTROL KEYS
The [PWR] key is used to turn the Tech 2 on or off (Figure 3-15). The status indicator light above this key is
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 3-15).
To adjust screen brightness and contrast, perform the following:
1. Press the [SHIFT] key once (amber status indicator light above [SHIFT] lights up).
2. Use up and down arrows to adjust screen brightness and contrast.
3. Press [SHIFT] key again when desired brightness is reached (status indicator light above [SHIFT] is
off).
The Tech 2 should return to normal operation after following the above steps.
Shift status indicator light
Shift key
FIGURE 3-15. Location of Control Keys
Page 3-10Tech 2
Power status indicator light
Power key
Getting Started
TECH 2 SOFT KEYS
Four soft keys are located directly below the Tech 2 screen (Figure 3-16). 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 3-17, the first soft key was
pressed to select [Display Time].
FIGURE 3-16. Location of Soft Keys
FIGURE 3-17. Soft Key Selection for [Display Time]
Te ch 2Page 3-11
Getting Started
SELECTION KEYS
The Tech 2 selection keys are four directional arrow keys (Figure 3-18). The arrow keys are pressed to move
the highlighted area to a selection on the screen (Figure 3-19) or to scroll the screen if there is more than one
screen. Once the desired selection is highlighted, press [ENTER] to activate the selection.
FIGURE 3-18. Location of Selection Keys
Top [ENTER] key
Down arrow (used to move
highlighted area from
Engine 1 to Engine 2)
Highlighted area
Bottom [ENTER] key
FIGURE 3-19. Positioning Highlighted Area to Make a Selection
Page 3-12Tech 2
Getting Started
ACTION KEYS
Action keys are used to respond to a specific question, initiate an action, or to exit from the Tech 2 program
(Figure 3-20). Specific "yes or no" questions 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 3-20. Location of Action Keys
Te ch 2Page 3-13
Getting Started
FUNCTION KEYS
Ten function keys (F0 to F9) are located on the Tech 2 keypad (Figure 3-21). 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, however, this may require
additional keystrokes.
FIGURE 3-21. Location of Function Keys
Page 3-14Tech 2
Getting Started
HELP KEY
The [?] key (Figure 3-22) may be pressed at any time to obtain a help screen. The help screen provides
specific information relating to the operation of the Tech 2.
FIGURE 3-22. Location of Help Key
Te ch 2Page 3-15
Getting Started
TECH 2 CONNECTIONS TO VEHICLE
The Tech 2 receives power through the DLC cable connection to vehicles equipped with On-Board
Diagnostics (OBD II) (Figure 3-23). In the case of vehicles not equipped with OBD II, an external power
source such as a vehicle cigarette lighter must be used (Figure 3-24).
SAE 16/19 pin adapter
(P/N 02002955)
DLC cable connector
FIGURE 3-23. Attaching the Tech 2 to OBD II-Equipped Vehicles
Pin adapter 12/19, or 16/19
DLC power jack location.
FIGURE 3-24. Attaching the Tech 2 to Non-OBD II-Equipped Vehicles
Cigarette lighter power cable
(P/N 02002954)
To ensure proper ground, power tester
through the DLC power jack, NOT
the power jack on the Tech 2.
Page 3-16Tech 2
Getting Started
TECH 2 CONNECTION TO PC
It may be necessary to connect the Tech 2 with a PC for the following reasons:
•Transfer of vehicle data (calibration information, "snapshot," etc.) from the Tech 2 to the PC
•Transfer of vehicle calibration data from the PC to the Tech 2
•Transfer of data (software update, etc.) from the PC to the Tech 2
•Before connecting Tech 2 to the PC, the following steps should be taken:
•Make sure that the RS-232 cable (P/N 02001358) is attached to the Tech 2 RS-232 port located on the
left side of the Tech 2 (Figure 5-3).
•Make sure the appropriate power supply is connected to the DLC cable power jack connector (Figure 4-
1), or to the power jack connector at the bottom of the Tech 2 (Figure 3-25).
•Make sure the PCMCIA card is fully inserted into the upper slot at the top of the Tech 2 (Figure 3-8,
Figure 3-9, and Figure 3-10).
Tech 2 power jack connector
Power jack
NAO power supply (P/N 02002972)
FIGURE 3-25. Tech 2 Connection to PC
Plug serial port adapter (P/N 01001089) into the unused serial port (com port) on the back of the computer
terminal. Then plug the Tech 2's RS-232 cable into the serial port adapter and connect the appropriate power
supply.
Te ch 2Page 3-17
Getting Started
RS-232 communications cable
(P/N 02001358)
Serial port adapter
(P/N 02001030)
Appropriate power supply
Power jack (plugged into Tech 2
power jack connector)
FIGURE 3-26. Tech 2 Connection to PC1
Page 3-18Tech 2
Getting Started
FIGURE 3-27. Tech 2 Start-Up Screen
Te ch 2Page 3-19
Getting Started
Page 3-20Tech 2
4. POWER SUPPLIES
Power up the Tech 2 using either:
•The power jack connector at the bottom of the Tech 2 unit (Figure 4-1), or
•The DLC cable power jack connector behind the area where various DLC adapters are connected
(Figure 4-1).
For non-vehicle communications, connect the 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 the power source is connected directly to the 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 4-1, see text below)
•Battery power cable (Figure 4-1, see text below)
•NAO power supply (Figure 4-1 and Figure 4-2, see NAO Power Supply on page 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.
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 4-1). 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.
Te ch 2Page 4-1
Power Supplies
BATTERY POWER CABLE
This cable has red and black battery clamps attached to one end and a power jack to the other (Figure 4-1).
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.
NOTE
This cable contains two 3-amp fuses. If you need to replace them, use
identical 3-amp fuses. See Chapter 6 for information on fuse replacement.
Tech 2 power jack connector
(for non-vehicle communications)
Tech 2 DLC cable
(P/N 02002952)
DLC cable power jack connector
(for vehicle communications)
NAO power supply
(P/N 02002972)
Battery power cable
(P/N 02002956)
Fuse box - 3 amps
FIGURE 4-1. Tech 2 Power Connections (Without Direct Power Connection from the DLC)
Cigarette lighter power cable
(P/N 02002954)
Battery clamps
Page 4-2Tech 2
Power Supplies
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 4-2). Output is 12 volts at 1.5 amps.
FIGURE 4-2. NAO Power Supply (110 Volts)
CAUTION!
CAUTION
To avoid personal injury due to electric shock, use a grounded outlet only.
The NAO power supply is for North American use only. These devices are
intended for indoor use only.
Te ch 2Page 4-3
Power Supplies
Page 4-4Tech 2
5. ADAPTERS
A number of adapters are available for the Tech 2 which allow connection to many different vehicles
(Table 5 -1, Tech 2 Adapters). Specific adapters are included in the Tech 2 base kit depending upon Tech 2
configuration
—NAO. Adapters not included in the base kit may be purchased separately from Vetronix.
DLC CABLE
The DLC cable (P/N 02002952) 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 5-1 and Figure 5-2).
VCI cable connector
(26-pin connector)
DLC cable
(19-pin connector end)
Various vehicle adpaters
(not all supplied)
FIGURE 5-1. DLC Cable Adapter Connections
Te ch 2Page 5-1
Adapters
DescriptionFunction
SAE 16/19 Pin Adapter This adapter allows DLC connection to some 1994-
1995 NAO vehicles and all NAO vehicles from 1996
onward.
NAO 12/19 Pin AdapterThis adapter allows ALDL connection to some 1994-
1995 NAO vehicles and all previous 1993 and below
vehicles equipped with 12-pin ALDL connectors.
TABLE 5-1. Tech 2 Adapters
RS-232 CABLE
GM Part
Numbers
02002955
02002961
The RS-232 cable (P/N 02001358) has an 8-pin RJ45 plug connector at each end (Figure 5-2). This cable
attaches to the Tech 2 RS-232 port and is used to communicate with a PC.
RS-232 cable
Detail of 8-pin RJ45 connector
Tech 2 RS-232 port
FIGURE 5-2. RS-232 Cable Connections
Page 5-2Tech 2
Adapters
RS-232/DB9 ADAPTER
The RJ45/BB9 adapter (P/N 02001030) has an RJ45 connector at one end and a DB9 connector at the other
(Figure 5-3). This adapter allows the connection of the Tech 2 to a PC.
RS-232 LOOPBACK ADAPTER
The loopback adapter (P/N 02001606) has an 8-pin RJ45 connector that attaches to the Tech 2 RS-232 port
(Figure 5-3). It is used to perform the Tech 2 self test.
RS-232 cable connected to Tech 2
8-Pin RJ45 connector
RS-232/DB9 adapter
FIGURE 5-3. RS-232/DB9 Adapter Connections
Te ch 2Page 5-3
Adapters
Page 5-4Tech 2
6. TROUBLESHOOTING
This section 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.
When the Tech 2 appears to be operating abnormally, refer to this section 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 information, refer to the inside cover of this user's guide.
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:
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.
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 6-1).
2. Select F3: Tool Options from the Tech 2 main menu (Figure 6-2).
3. Select F3: Self Test from the tool options menu (Figure 6-3).
Page 6-2Tech 2
FIGURE 6-1. Tech 2 Start-Up Screen
Troubleshooting
FIGURE 6-2. Tools Options Selected on Main Menu
Te ch 2Page 6-3
Troubleshooting
FIGURE 6-3. Self Test Selected on Tool Options Menu
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 (see Figure 6-5). Read all screen instructions and connect or disconnect the
appropriate cables and loopback adapters. Screen messages display when external loopback connectors are
connected. For specific loopback connection information, refer to Figure 3-2, Figure 3-4, and Figure 6-4.
F0: Automated Main PCB and VCI Test
Selecting Automated Main PCB and VCI (Figure 6-5) 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 6-6) while performing all the PCB and
VCI tests in sequential order.
Page 6-4Tech 2
Troubleshooting
Tech 2 VCI connector
DLC loopback adapter
(P/N 02002953)
FIGURE 6-4. Connection of DLC Loopback Adapter to the Tech 2 VCI Connector
FIGURE 6-5. Tech Automated Main PCB and VCI Test Selected on Tech 2
Self Test Main Menu
The Automated Main PCB portion tests the following components:
•RAM / ROM
•RS-485 loopback
•RS-232 loopback
•Keypad
•PCMCIA slot 1
*. Each of these tests requires the conenction of a loopback adapter to the Tech 2.
Te ch 2Page 6-5
*
*
Troubleshooting
•PCMCIA slot 2
•Display controller
•Sound transducer
•Real-time clock
Refer to Table 6 -1 and Table 6-2 for help in diagnosing problems that involve the Tech 2's PCB and VCI.
FIGURE 6-6. Automated Main PCB and VCI Test Results Screen
If the Tech 2 passes all Automated Main PCB and VCI tests, you do not need to run any more tests to verify
that the Tech 2 is working properly.
The following test results are displayed:
Total Pass1 - indicates that Tech 2 passed test
0 - indicates a test failure
Total Failures0 - indicates that Tech 2 passed test
1 - indicates a test failure
PCMCIA Cards Present1 or 2 indicates how many cards present in Tech 2
Once tests are complete, select the soft keys Main Details or VCI Details (Figure 6-6) to review the results
of the main PCB or VCI tests (see Figure 6-7 and Figure 6-8).
If any failures occur, select F3: Selectable Main PCB (Figure 6-11) or F4: Selectable VCI (Figure 6-13)
from the Tech 2 Self Test main menu to further isolate the failure. Report failure information to Customer
Support.
Page 6-6Tech 2
FIGURE 6-7. Main Details Selection
Troubleshooting
FIGURE 6-8. VCI Details Selection
Te ch 2Page 6-7
Troubleshooting
TestResultsSolution
RAM/ROM0-Pass
1-ROM read fail
2-RAM read fail
3-RAM write and read do not compare
RS-485 loopbackPass
Fail-Loopback may not be connected
RS-232 loopbackPass
Fail-Loopback may not be connected
KeypadTest successful
Keypad failed
Exiting test before all keys are pressed
results in a failed keypad test
PCMCIA (tests
both card slots)
Display controller
(contrast and
characters)
Sound transducerUser determines if sound transducer is
Real-time clockTime is displayed correctly.
Card detected
Card not present
Fail
User determines if display is correct.If the display shows a noticeable failure during
working.
Invalid values are displayed for date,
year, hour, minute, or second.
Record type of failure.
Cycle Tech 2 power (press [PWR]) and retest.
If problem persists, contact Customer Support.
Check loopback connection.
If problem persists, contact Customer Support.
Check loopback connection.
If problem persists, contact Customer Support.
Cycle Tech 2 power and retest.
If problem persists, contact Customer Support.
Check that card is inserted properly.
Cycle Tech 2 power and retest.
If problem persists, contact Customer Support.
tests, contact Customer Support.
If no sound is emitted by repeatedly selecting
Automated Test or Sound On, contact Customer
Support.
Reset clock.
Cycle Tech 2 power and retest.
If time is not retained, contact Customer Support.
TABLE 6-1. PCB Diagnostic Chart
TestResultsSolution
MUX
(Multiplexer)
VCI adapter ID
(performed only
during selectable
VCI test)
TPU5, TPU1, and TPU0 - pass/fail
(results from selectable VCI test)
TABLE 6-2. VCI Module Diagnostic Chart
If MUX A or B fails, cycle Tech 2 power and
retest.
If problem persists, contact Customer Support.
If adapter fails, use a different adapter to make
sure that the VCI correctly identifies the adapters.
Cycle Tech 2 power and retest failed adapter. If
adapter fails second test, contact Customer
Support.
If channel A or B fails, cycle Tech 2 and retest.
If problem persists, contact Customer Support.
If a failure occurs, cycle Tech 2 and retest.
If problem persists, contact Customer Support.
If test fails, was loopback installed?
Once an error has been detected on one of the I/O
lines, you can test the specific line by selecting F3
or F4 tests.
If the test fails continuously or intermittently,
contact Customer Support.
For any failure, make sure the loopback is
connected. Use F:1 Check ID to verify that the
loopback is found.
Cycle Tech 2 and retest. If problem persists,
contact Customer Support.
For any failure, cycle Tech 2 and retest.
If problem persists, contact Customer Support.
For any failure, cycle Tech 2 and retest.
If problem persists, contact Customer Support.
Te ch 2Page 6-9
Troubleshooting
TestResultsSolution
VCI TPU (Time
Processor Unit)
VCI level shifters MUX A 2.5 V Hi - pass/fail
TPU0 - pass/fail
TPU1 - pass/fail
TPU5 - pass/fail
TPU12 & TPU15 - pass/fail (or not
tested if no loopback)
TPU13 & TPU14 - pass/fail (or not
tested if no loopback)
MUX A 2.5 V Lo - pass/fail
MUX A 5.0 V Hi - pass/fail
MUX A 5.0 V Lo - pass/fail (results
from selectable VCI test)
For any failure, cycle Tech 2 and retest.
If problem persists, contact Customer Support.
For any failure, cycle Tech 2 and retest.
If problem persists, contact Customer Support.
This test works the same as the Automated Main PCB and VCI test, except the VCI portion of the test is not
included (Figure 6-9).
FIGURE 6-9. Automated Main PCB Test Selected on Tech 2 Self Test Main Menu
Page 6-10Tech 2
Troubleshooting
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 6-10).
FIGURE 6-10. Automated VCI Test Selected on Tech 2 Self Test Main Menu
Te ch 2Page 6-11
Troubleshooting
F3: Selectable Main PCB Test
Select F3: Selectable Main PCB (Figure 6-11) after a fail message has been displayed during the
Automated Main PCB and VCI or Automated Main PCB tests. When you select F3: Selectable Main PCB,
a screen like the one shown in Figure 6-12 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 (Table 6-1, PCB Diagnostic Chart, on page 6-8).
FIGURE 6-11. Selectable Main PCB Test Selected on Tech 2 Self Test Main Menu
FIGURE 6-12. Selectable Main PCB Self Test Screen
Page 6-12Tech 2
Troubleshooting
F4: Selectable VCI Test
Select F4: Selectable VCI (Figure 6-13) after a fail message displays during the Automated Main PCB and
VCI or Automated VCI tests. When you select F4: Selectable VCI, a screen like the one shown in Figure 6-
14 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 6-15 is displayed. If you then select Previous Menu, the screen
shown in Figure 6-14 returns. For specific information on failed components, refer to the Vehicle
Communications Interface (VCI) Module Diagnostic Chart (Table 6 -2, VCI Module Diagnostic Chart, on
page 6-8).
FIGURE 6-13. Selectable VCI Test Selected on Tech 2 Self Test Main Menu
FIGURE 6-14. First Selectable VCI Self Test Screen
Te ch 2Page 6-13
Troubleshooting
FIGURE 6-15. Second Selectable VCI Self Test Screen
Page 6-14Tech 2
Troubleshooting
F5: Power On Self Test Results
Select F5: Power On Self Test Results (Figure 6-16) after a fail message displays during the Power On
Self Test (POST). Specific information on the failure displays on the screen. Select F0, F1, F2, F3, or F4 to
further isolate the specific fault.
FIGURE 6-16. Power On Self Test Results Selected on Tech 2 Self Test Main Menu
Te ch 2Page 6-15
Troubleshooting
NO POWER TO TECH 2 TROUBLESHOOTING
TABLES
Use the following tables to diagnose, isolate, and correct power source problems that may cause a No Power
condition to your Tech 2 scan tool.
To help determine the power supply source, see Chapter 4.
Power Source: DLC Cable
StepActionYe sNo
1Does vehicle support power through
DLC cable connection exclusively? (If
you are not sure, consult your service
manual.)
2• Using a digital multi-meter (DMM),
verify vehicle battery voltage.
Is battery fully charged?
3• Verify connection at vehicle DLC
connector for loose or damaged pin(s).
Did you find a problem?
4• Disconnect DLC cable from vehicle.
• Power on Tech 2 using alternate power
source at DLC cable power jack
connection.
Did your Tech 2 power on?
5• Remove DLC cable from Tech 2 and
attach alternate power supply at VCI
power jack connection located at the
bottom of Tech 2.
Does Tech 2 power on?
TABLE 6-3. DLC Cable No Power Troubleshooting Table
Go to Step 2.Use alternate power.
Go to Step 3. Charge battery.
Repair connector.
(Consult vehicle service manual.)
Problem with vehicle.
(Consult vehicle service manual.)
Replace DLC cable. Problem with Tech 2.
Go to Step 4.
Go to Step 5.
Contact Customer
Support.
Page 6-16Tech 2
Troubleshooting
Power Source: Cigarette Lighter Power Cable
StepActionYe sNo
1• Unplug cigarette lighter power cable
from DLC cable.
• Using a digital multi-meter (DMM),
verify voltage output at cigarette
lighter power cable power jack.
Do you have battery voltage output?
2• Check fuse in cigarette lighter power
cable (refer to Figure 6-17).
Does fuse need replacing?
3• Remove DLC cable from Tech 2.
• Plug in cigarette lighter power jack to
the VCI power jack connector located
at bottom of Tech 2.
Does the Tech 2 power on?
4• Using a DMM, verify voltage output
at battery.
Do you have battery voltage output?
5• Disconnect cigarette lighter power
cable from vehicle and verify voltage
output at vehicle cigarette lighter
socket.
Do you have battery voltage output?
Go to Step 3. Go to Step 2.
Replace fuse. Go to step 3.
Replace DLC cable.Problem with Tech 2.
Contact Customer
Support.
Go to Step 5.Charge battery.
Replace cigarette lighter power
cable.
Problem with vehicle.
Consult vehicle
service manual.
TABLE 6-4. Cigarette Lighter Power Cable No Power Troubleshooting Table
Te ch 2Page 6-17
Troubleshooting
Power Source: Battery Power Cable
StepActionYe sNo
1• Unplug battery power cable power
jack from DLC cable.
• Using a digital multi-meter (DMM),
verify voltage output at battery power
cable power jack.
Do you have battery voltage output?
2• Check fuse(s) in battery power cable
(refer to Figure 6-18).
Does fuse(s) need replacing?
3• Remove DLC cable from Tech 2.
• Plug in battery power cable power
jack to the VCI power jack connector
located at bottom of Tech 2.
Does the Tech 2 power on?
4• Using a DMM, verify voltage output
at battery.
Do you have battery voltage output?
TABLE 6-5. Battery Power Cable No Power Troubleshooting Table
Go to Step 3. Go to Step 2.
Replace fuse(s). Go to Step 3.
Replace DLC cable. Problem with Tech 2.
Contact Customer
Support.
Replace battery power cable. Charge battery.
Power Source: Battery Power Cable
StepActionYe sNo
1• Unplug NAO (or Universal) power
supply power jack from DLC cable.
• Using a digital multi-meter (DMM),
verify voltage output at power jack.
Do you have battery voltage output?
2• Remove DLC cable from Tech 2.
• Plug in NAO (or Universal) power
supply power jack to the VCI power
jack connector located at bottom of
Tech 2.
Does the Tech 2 power on?
TABLE 6-6. NAO or Universal No Power Troubleshooting Table
Go to Step 2. Replace NAO or
Universal power
supply.
Replace DLC cable. Problem with Tech 2.
Contact Customer
Support.
Page 6-18Tech 2
Troubleshooting
CIGARETTE LIGHTER POWER CABLE
3-AMP FUSE REPLACEMENT
A three-amp removable fuse is located in the cigarette lighter power cable (P/N 02002954) connector.
When required, check or replace the fuse by performing the following steps:
1. Ensure the cigarette lighter power cable is not connected to the vehicle or Tech 2.
2. Unscrew the fuse retainer cap and remove the 3-amp fuse.
3. Inspect the fuse for damage and replace it with an identical 3-amp fuse if required.
4. Verify by connecting the cigarette lighter power cable to the Tech 2 and vehicle.
Cigarette lighter power cable
3-amp fuse
Fuse retainer cap
FIGURE 6-17. Cigarette Lighter Power Cable 3-Amp Fuse Replacement
Te ch 2Page 6-19
Troubleshooting
BATTERY POWER CABLE 3-AMP FUSE
REPLACEMENT
Two three-amp fuses are located in the battery power cable (P/N 02002956) three-amp fuse box.
When required, check or replace the fuse(s) by following the steps below.
CAUTION!
CAUTION
1. Ensure the battery power cable is not connected to the vehicle battery or Tech 2.
2. Use a standard fuse puller to remove the fuse(s) from the fuse box.
3. Inspect the fuse(s) for damage and replace with identical 3-amp fuse(s) if required.
4. Verify by connecting the battery power cable to the Tech 2 and vehicle battery.
3-amp fuse
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).
Battery power cable
3-amp fuse box
Battery clamps
FIGURE 6-18. Battery Power Cable 3-Amp Fuse Replacement
electronic throttle control
electronic timing control
ETS enhanced traction system
Te ch 27-3
Abbreviations
TER MDEFINITION
EV electric vehicle
EVAP evaporative emission
evap evaporator
EVO electronic variable orifice
ext extended
F Fahrenheit
F4WD full-time four-wheel drive
FC fan control
fdbk feedback
Feb February
FEDS fuel enable data stream
FEIC fuel economy integrated counter
FET field effect transistor
filt filter
FL front left
TER MDEFINITION
HD heavy duty
hex hexadecimal
HI high
hist history
HO2S heated oxygen sensor
horiz horizontal
hr hour
hrs hours
HTCM HVAC thermal control module
htr heater
HUD head-up display
HVAC heating ventilation air conditioning
H/W hardware
HW heated windshield
hz hertz
flr floor
FM frequency modulation
FP fuel pump
FR front right
freq frequency
frnt front
FT fuel trim
ft-lb foot-pounds
fwd forward
FWD front-wheel drive
g/cyl grams per cylinder
GEN generator
GND ground
GPS global positioning system
GVW gross vehicle weight
HC hydrocarbon(s)
IAC idle air control
IAT intake air temperature
IC ignition control
ICCS integrated chassis control system
ICM ignition control module
ICS integrated chassis system
ID identification
ign ignition
illum illumination
immo immobilizer
in inch(es)
inadv inadvertent
inc increment
incand incandescent
infl inflatable
info information
HCM heating control module
7-4Tech 2
init initial
Abbreviations
TERMDEFINITION
inj injector
inst instant
int interior
I/O in/out
I/P instrument panel
IPC instrument panel cluster
IPM instrument panel module
IRQ interrupt request
ISC idle speed control
iso isolation
ISS input shaft speed
Jan January
Jul July
Jun June
KAM keep alive memory
KDD keyboard display driver
kg/h kilograms per hour
km kilometer
km/h kilometers per hour
km/l kilometers per liter
kpa kilopascal
KS knock sensor
LCD liquid crystal display
LCM lighting control module
LDCL left door close locking
LDCM left door control module
lduty light duty
LED light emitting diode
LF left front
LFWS left front wheel speed
LGM lift gate module
LH left hand
TERMDEFINITION
LMD left mid door
LO low
LPS low pressure sensor
L/R left/right
LR left rear
LRD left rear door
lrn learn
LTPWS low tire pressure warning system
lvl level
MAF mass airflow
malf malfunction
MALL multifunction alarm lighting and
locking
man manual
manufact manufactures
MAP manifold absolute pressure
Mar March
MAT manifold air temperature
max maximum
MCU microprocessor control unit
MD mini disk
med medium
mem memory
MFI multiport fuel injection
mgmt management
mid midrange
MIL malfunction indicator lamp
min minute(s)
mm3 cubic millimeters
mmhg millimeters of mercury
MMM memory mirror module
mod module
mon monitor
Te ch 27-5
Abbreviations
TER MDEFINITION
mpg miles per gallon
mph miles per hour
msg message
MSM memory seat module
MSVA magnetic steering variable assist
mtr motor
mult multiple
mux multiplex
nav navigation
NDH navigation display head
NGO natural gas operation
no number
Nov November
NOx nitrogen oxides
NVRAM non-volatile random access memory
TER MDEFINITION
PDIF pressure differential
PDM passenger door module
PDS passenger door switch
PEB power electronics bay
perf performance
phn phone
PID parameter identification
PLL phase locked loop
PMV pressure modulator valve
PNP park/neutral position
pos position
PPS passenger presence sensing
press pressure
preten pretensioner
prev previous
O2 oxygen
O2S oxygen sensor
OAT outside air temperature
OBD on-board diagnostic
OBPA off-board programming adapter
Oct October
OEM original equipment manufacturer
orig original
OSC oxygen storage capacity
OSS output shaft speed
parms parameters
PC pressure control (solenoid valve)
PCB printed circuit board
PCM powertrain control module
PCMCIA personal computer memory card
industry association
prim primary
prog program
PROM programmable read-only memory
PS power steering
PSCM passenger seat control module
psgr passenger
psi pounds per square inch
PSIR passenger supplemental inflatable
restraint
PSP power steering pressure
PWM pulse width modulation
pwr power
PZM platform zone module
QDM quad driver module
R/A resume or accelerate
RAC remote accessory controller
PCS pressure control solenoid
PCV positive crankcase ventilation
7-6Tech 2
RAM random access memory
ran random
Abbreviations
TERMDEFINITION
RAP retained accessory power
RCC rear climate control
RDCM right door control module
RDM rear door module
RDS radio display system
rec receive
recal recalibrate, recalibration
recep receptacle
recirc recirculation
recl recline
ref reference
refrig refrigeration
regen regenerate
req request
resist resistance
TERMDEFINITION
RSS road sensing suspension
rt right
RTC real-time clock
RTD real-time damping
RTT reconfigurable telltale
RWD rear-wheel drive
SBM standard body module
SC supercharger
SCV speed controlled volume
SDL serial data link
SDM sensing and diagnostic module
sec second(s)
sen sensor
Sep September
seq sequence
resync resynchronize
rev reverse
RF radio frequency
right front
RFA remote function actuator
RFI radio frequency interference
RFWS right front wheel speed
RH right hand
RIM radio interface module
rear integration module
RKE remote keyless entry
R/L right/left
RMD right mid door
ROM read-only memory
RPM revolutions per minute
RPO regular production option
RR right rear
RRD right rear door
ser serial
SFI sequential fuel injection
sig signal
SIR supplemental inflatable restraint
SIS side impact sensor
SMCC stepper motor cruise control
SOH state of health
sol solenoid
spd speed
speedo speedometer
SPI serial peripheral interface
SPS service programming system
speed signal
SS shift solenoid
SSS speed sensitive steering
SSV shift solenoid valve
stdby standby
STL service transmission lamp
Te ch 27-7
Abbreviations
TER MDEFINITION
S/W software
sw switch
Switz Switzerland
SWPS steering wheel position sensor
SXR serial transmit and receive
sync synchronize
sys system
TAC throttle actuator control
tach tachometer
TAP throttle adaptive pressure
transmission adaptive pressure
TBC truck body controller
TBI throttle body fuel injection
TC turbocharger
TCC torque converter clutch
TER MDEFINITION
TT telltale lamp
TTM tilt and telescope module
TVV thermal vacuum valve
TWC three-way catalytic converter
twtr tweeter
UART universal asynchronous receiver
transmitter
unlk unlock
vac vacuum
VATS vehicle anti-theft system
VCI vehicle communications interface
VCM vehicle control module
VDR vehicle dealer recorder
veh vehicle
ver version
TCM transmission control module
TCS traction control system
TDC top dead center
tele telescope
temp temperature
TFP transmission fluid pressure
TFT transmission fluid temperature
TIM tire inflation monitor
TIS Techline information system
torq torque
TP throttle position
TPM tire pressure monitor
TR transmission range
trac traction
trans transmission
transp transponder
vert vertical
VES variable effort steering
VF vacuum fluorescent
VICS vehicle information communication
system
VIN vehicle identification number
vlv valve
VR voltage regulator
vspd vehicle speed
VSS vehicle speed sensor
VSV vacuum solenoid valve
VTD vehicle theft deterrent
warn warning
w/o without
WOT wide open throttle
xpress express
trk truck
TSS turbine shaft speed
7-8Tech 2
8. SOFTWARE
This section contains a description of Tech 2 software, based on the latest product information available at
the time of publication. Tech 2 flowcharts are provided on the following pages to give you an overview of
the many Tech 2 software options.
The section continues with a look at Tool Options on page 8-6 and Getting Started on page 8-13 to
familiarize you with the various tool settings and to provide you with useful operation information. Next,
you can see how to use Techline Information System 2000 (TIS 2000) on page 8-15 to perform service
programming, Tech 2 updates, and snapshot procedures. Finally, comprehensive Tech 2 Pathing Tables on
page 8-43 help you navigate to specific special functions that the Tech 2 offers.
NOTE
Proper PCMCIA updates are essential for successful vehicle diagnoses.
Refer to function F5: Programming Tech 2 on page 8-11 and PCMCIA Card on page 8-26.
Te ch 2Page 8-1
Software
TECH 2 FLOWCHART
Five basic functions or “paths” are available on the Tech 2's Main Menu: Diagnostics, Service
Programming, View Captured Data, Tool Options, and Getting Started (see Figure 6-2).
MAIN MENU
F0: Diagnostics
F1: Service Programming
F2: View Captured Data
F3: Tool Options
F4: Getting Started
FIGURE 8-1. The Tech 2’s Five Basic Functions or “Paths”
DIAGNOSTICS
Table 8-1 shows the flow to the four major areas within Diagnostics: Powertrain, Body, Chassis, and
Diagnostic Circuit Check.
Page 8-2Tech 2
F0: Diagnostics
Vehicle Identification:
Select Model Year
1991-2002
Select Vehicle Type
Passenger Car
LD Trk, MPV, Incomplete
Medium Duty Truck, Saturn
Select System
Powertrain, Body, Chassis,
Diagnostic Circuit Check
Software
POWERTRAINBODYCHASSIS
Vehicle Identification:
Select Engine Type
1.6L, 3.0L, V6, L81, etc.
Select Product Line
C, G, H, Other, etc.
Select Transmission
4-Speed Automatic, etc.
F0: DTC
DTC Information, Freeze
Frame/Failure Records,
Clear DTC Information,
Capture Info
F1: Data Display
Engine Data Display,
Transmission Data Display
F2: Special Functions
Engine Output Controls,
Transmission Output
Controls, Fuel System, IAC
System, Crankshaft Pos.
Variation Learn
F3: Snapshot
Engine Snapshot,
Transmission Snapshot
F3: System Information
MIL/System Status
F3: ID Information
Calibration ID, VIN
Vehicle Identification:
Select Product Line
C, E, F, G, etc.
BCM, IPC, SIR, HVAC, etc.
F0: DTC
DTC Information, Clear
Information
F1: Data Display
Module Info, Data, INputs,
Outputs, etc.
F2: Special Functions
Relay, Options, Output
Control, Set Options,
Reprogramming, Gauges, etc.
F3: Snapshot
Module Info., Real-Time
Clock, Data, Inputs, Outputs,
etc.
Vehicle Identification:
Select Product Line
C, E, F, G, J, K, etc.
Delco/Bosch/ABS/TCS
DTC Information, Clear
Light Med. Duty Trk.
F1: Data Display
(refer to powertrain)
F2: Special Functions
Gear Tension Relief, Relay
Test, Lamp Test, etc.
(refer to powertrain)
DIAGNOSTIC
CIRCUIT CHECK
F0: Class 2 DTC Check
F1: Class 2 Message
Monitor
F0: DTC
Information
Data Lists
F3: Snapshot
TABLE 8-1. Diagnostics Path
Te ch 2Page 8-3
Software
SERVICE PROGRAMMING AND VIEW CAPTURED DATA
The figures below show the major areas within the Service Programming and View Captured Data
categories.
F1: Service Programming
Vehicle Identification:
Select Model Year
Select Vehicle Type
Select Product Line
F0: Reprogram Existing Module
F1: Replacing Module
TABLE 8-2. Service Programming Path
F2: View Captured Data
Capture Info
F0: DTC Information
F1: Freeze Frame/Failure Records
TABLE 8-3. View Captured Data Path
Snapshot
Select Items, Plot, Select Frame,
Auto Reverse, Stop, Auto Forward,
First Frame, Trigger Frame, Last
Frame, Units, Previous Frame, Next
Frame DTC, Previous DTC-Chg,
Next DTC-Chg
Page 8-4Tech 2
TOOL OPTIONS AND GETTING STARTED
The figures below show the major areas within the Tool Options and Getting Started categories.
F3: Tool Options
F0: Set Clock
F1: Set Screen Contrast
F2: Set Units
Metric/English
F3: Self Test
(refer to Chapter 6)
Automated Main PCB & VCI, Automated Main PCB,
Automated VCI, Selectable Main PCB, Selectable VCI, Power
On Self Test Results
F3: Set Training Center Mode
Instructor/Student
F3: Programming Tech 2
Software
F3: Set Communication By-Pass Mode
Enable/Disable
F3: Make Duplicate PCMCIA Card
TABLE 8-4. Tool Options Path
F4: Getting Started
F0: Tool Controls
Help Functions, Key Pad Layout,
Screen Contrast Control, Soft Keys
F1: Hardware
Screen Display, VCI Module Removal, PCMCIA Card
Removal and Installation, Cables/Adapters and Power
Connections, Prop Rod and Hand Straps, RS-232 Port
and RS-485 Port
F2: Tech 2 Features
F3: Programming Tech 2
TABLE 8-5. Getting Started Path
Te ch 2Page 8-5
Software
TOOL OPTIONS
Select F3: Tool Options from the Tech 2 Main Menu (Figure 6-2) to obtain the Tool Options menu (Figure 8-
2), which provides features you can use to control various Tech 2 settings in addition to the self tests shown
in Chapter 6.
The following functions are available from the Tool Options menu:
•F0: Set Clock enables you to set the internal Tech 2 real-time clock.
•F1: Set Screen Contrast enables you to adjust screen contrast and save the current setting for various
shop lighting conditions.
•F2: Set Units enables you to set and save default settings to suit your preference for measurement in
English or Metric system units.
•F3: Self Test helps you verify that the Tech 2 is functioning normally (Refer to Chapter 6 for complete
information).
•F4: Set Training Center Mode is for GM Training Centers only.
•F5: Programming TECH 2 enables you to download software from a PC to the Tech 2 via the RS-232
cable.
•F6: Set Communication By-Pass Mode is an engineering function that allows the user to view Data
Display without being connected to a vehicle.
•F7: Make Duplicate PCMCIA Card enables you to duplicate current PCMCIA card data to a second
card.
FIGURE 8-2. Set Clock Selected on Tool Options Menu
Page 8-6Tech 2
F0: Set Clock
After F0: Set Clock is selected, a Set Real-Time Clock menu appears (Figure 8-3).
FIGURE 8-3. Set Real-Time Menu
Software
The following methods are available to select areas you need to change:
•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 increases by one unit until a preset maximum unit is
reached. Once all correct values are entered, press the soft key below Set Clock to save all changes.
•Use the function key of desired selection to change an incorrect value. Each time the function key is
pressed the value increased by one unit until a preset maximum is reached. Once all correct values are
entered, press the soft key below Set Clock to save all changes.
Te ch 2Page 8-7
Software
F1: Set Screen Contrast
After you select F1: Set Screen Contrast, a Set Contrast Control screen appears (Figure 8-4), providing you
with instructions on how to set the screen contrast. After you finish setting the screen contrast, press EXIT
to save the contrast level for the next Tech 2 power up.
FIGURE 8-4. Set Contrast Control Screen
Important: The Screen Contrast Control is designed to adjust 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 brightens slightly. As the temperature of the Tech
2 decreases, the display darkens. 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 SHIFT 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.
Page 8-8Tech 2
Software
F2: Set Units
After you select F2: Set Units, a Set Units screen appears (Figure 8-5). The currently displayed unit (either
Metric or English) is displayed to the right of Current Units Setting. Use the up and down arrow keys to
move the cursor to the desired selection. At the desired selection, press ENTER to set or change the Current
Units Setting. Once the setting is completed, press EXIT to save the current setting for the next Tech 2
power up.
FIGURE 8-5. Set Units Screen
F3: Self Test
After you select F3: Self Test, a Tech 2 Self Test screen appears (Figure 8-6). Refer to Chapter 6 for
complete information.
Power Down Screen
After completion of any Self Test, return to the Tech 2 Self Test menu screen. After pressing EXIT, a screen
appears instructing you to turn the Tech 2 power off (Figure 8-7). Turn off the Tech 2 and turn back on to
continue.
Te ch 2Page 8-9
Software
FIGURE 8-6. Tech 2 Self Test Screen
FIGURE 8-7. Tech 2 Power Down Screen
Page 8-10Tech 2
Software
F4: Set Training Center Mode
After you select F4: Set Training Center Mode, a Set Training Center Mode screen appears (Figure 8-8).
This screen gives you the ability to connect multiple Tech 2 scan tools for instructional purposes, which is
used at GM Training Centers only.
FIGURE 8-8. Set Training Center Mode
F5: Programming Tech 2
After you select F5: Programming TECH 2, a Programming Tech 2 screen appears (Figure 8-9) with
instructions for downloading from a PC to the Tech 2 scan tool.
Follow the on-screen instructions for downloading software. Refer also to Software Download on page 8-
25.
FIGURE 8-9. Programming Tech 2 Screen
Te ch 2Page 8-11
Software
F6: Set Communication By-Pass Mode
After you select F6: Set Communication By-Pass Mode (Figure 8-10), the screen offers Enable and Disable
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/down
arrow keys, then press ENTER to change the current mode. The Tech 2 defaults to the Disable mode once it
has been powered off.
FIGURE 8-10. Set Communication By-Pass Mode Screen
F7: Make Duplicate PCMCIA Card
This function is used to make an exact duplicate of the current PCMCIA source card. After you select F7:
Make Duplicate PCMCIA Card, the display prompts 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 8-11) appears, showing the current version of both cards. The highlighted
areas on the screen represent the locations of the source and destination PCMCIA cards. Slot 1 is defined as
the slot closest to the Tech 2 display. Use the Copy soft key to initiate the duplication process.
FIGURE 8-11. PCMCIA Card Duplicator Screen
Page 8-12Tech 2
Software
GETTING STARTED
Select F4: Getting Started from the Tech 2 Main Menu (Figure 8-12) to obtain the Getting Started Menu
(Figure 8-13). The Getting Started Menu 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-The Tool Controls Menu (Figure 8-14) provides information on Tech 2 help
functions, keypad layout, screen contrast control, and soft keys.
•F1: Hardware-The Hardware Menu (Figure 8-15) provides 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 displays a vehicle information entry sequence for a fictitious vehicle (Figure 8-
16).
•F3: Programming Tech 2 provides instructions for downloading from a PC to the Tech 2 scan tool.
This option duplicates Tool Options Menu function F5: Programming TECH 2 (see Figure 8-2 and
Figure 8-9).
FIGURE 8-12. Getting Started Selected on Tech 2 Main Menu
FIGURE 8-13. Getting Started Menu
Te ch 2Page 8-13
Software
FIGURE 8-14. Tool Controls Menu
FIGURE 8-15. Hardware Menu
FIGURE 8-16. Tech 2 Features Screen
Page 8-14Tech 2
Software
TECHLINE INFORMATION SYSTEM 2000
(TIS 2000)
Techline Information System 2000 (TIS 2000)* 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 95 environment.
To start TIS 2000, double click its icon in the Techline Information System group on the desktop screen of
your Techline terminal. TIS 2000 supports service programming with the Tech 2 scan tool only.
FIGURE 8-17. Techline System Overview
*. At the time of publication, TIS 2000 software available in English only.
Te ch 2Page 8-15
Software
GLOSSARY
ClientThe Techline client PC is the service area PC that is connected to the GM Access server
(most are IBM PCs).
HubA hub is a device used to connect several clients to the GM Access server (most are
eight-station hubs).
IconA graphic symbol on the computer screen (often with text) that represents a file folder or
a specific software application.
LANLocal Area Network. A communications system within a dealership that allows
employees using several Techline client PCs to obtain data from the GM Access server.
Loading ProcedureInstallation of software on a computer.
Login/LogonTo start a session within a system, usually by giving a user name and password as user
authentication.
LogoffTo return to the logon screen by properly exiting the software program.
PasswordA security feature allowing only you authorization on the Techline client PC applications.
ServerThe GM Access computer from which the Techline PC clients can download applications
(most are Compaq PCs).
User NameThe name that identifies a Techline client PC user to software on the GM Access server
(techuser01).
Page 8-16Tech 2
Software
SERVICE PROGRAMMING SYSTEM (SPS)
The Service Programming System (SPS) updates the calibration files that are stored in a vehicle on-board
controller (e.g., ECM, PCM, VCM). 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 problem, diagnosis may call for reprogramming the controller with newer calibration
information to correct a customer concern.
FIGURE 8-18. TIS 2000 Main Screen (Application Selection)
Te ch 2Page 8-17
Software
NOTE
Battery voltage should be checked. A fully charged battery is necessary
before reprogramming takes place. The vehicle battery should not be
connected to a battery charger during a programming event. Incorrect
voltage could cause programming and/or control module failure. During
programming, the control module depends on the battery as its sole source
of power. Also during programming, the vehicle's components (i.e. blower
motor) are set to a default mode which may be turned on, placing
additional draw on the vehicle's battery. If the voltage goes outside the
specified range (11 to 14 volts) the controllers and the Techline equipment
stops communicating. If this happens, it could cause the control module to
become inoperable and require replacement.
Check the integrity of the Tech 2 cables, make sure they are not frayed,
broken, or twisted. Loss of communication for any reason requires
additional time in completing the reprogramming event.
Do not discontinue or interrupt the program loading process to the vehicle.
This may result in a programming error and could prevent the vehicle onboard controller from functioning properly.
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 controller.
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 controller.
PERFORMING REMOTE SPS
Important! Prior to performing SPS:
•Ensure that the Tech 2 and the terminal are both equipped with the latest software.
•Ensure that the vehicle battery is fully charged. Battery voltage for SPS should be between 12.5 and 14
volts. However, make sure a battery charger IS NOT connected to the vehicle.
•Ensure that cable connections are secure. A disconnected cable could cause controller failure.
Perform remote SPS using TIS 2000 as follows:
1. Obtain Vehicle Information:
a. With the Tech 2 and vehicle both off, connect the Tech 2 to the vehicle DLC (Figure 3-23).
b. Start the Tech 2. At the Tech 2 title screen, press ENTER.
c. Turn the vehicle ignition to on (engine not running).
Page 8-18Tech 2
Software
d. At the Tech 2 Main Menu, select F1: Service Programming and enter/identify vehicle information as
requested by the Tech 2. As needed, identify the type of module being programmed.
e. Press the Request Info soft key on the Tech 2.
f. At the next screen (Figure 8-19), identify whether an existing module or a new module is being
programmed.
For an existing module, the Tech 2 obtains calibration information from the controller.
For a new module, the Tech 2 instructs you to remove the old module and install the new module in
the vehicle. When you complete this step, press the Done soft key on the Tech 2. The Tech 2 then
communicates with the new controller, receiving an access code that enables you to program the
Tech 2.
FIGURE 8-19. Service Programming Menu
g. Verify that the displayed VIN matches the vehicle VIN, then press Ye s to continue.
• If the displayed VIN does not match the actual vehicle VIN, write down the actual VIN. You will
have a chance to input the correct VIN at the terminal.
h. When complete, press EXIT, power down, and disconnect the Tech 2 from the vehicle. Turn the
vehicle ignition off.
2. Transfer Data from the PC to the Tech 2
a. Connect the Tech 2 to the terminal, as shown in Figure 8-20.
NOTE
Connection location varies depending on terminal configuration.
b. At the terminal, start TIS 2000.
c. From the TIS 2000 main screen (refer to Figure 8-18), select Service Programming System.
Te ch 2Page 8-19
Software
FIGURE 8-20. Tech 2 to PC Terminal Connection
d. At the Select Diagnostic Tool and Programming Process screen (Figure 8-21) make the appropriate
selection for your procedure:
• Under Select Diagnostic Tool, select Tech 2.
• Under Select Programming Process, identify whether an existing module is being reprogrammed or a
module is being replaced with a new one.
• Under Select ECU Location, identify whether on-vehicle or off-board programming is being
performed.
e. After making selections, select Next.
f. A reminder screen appears for making the appropriate connections (Figure 8-22). Select Next after
confirming connections.
g. A screen appears, asking to confirm the VIN (Figure 8-23). After confirming/entering the correct
VIN, select Next.
A Supported Controllers screen (Figure 8-24) appears asking to identify the type of controller being
programmed. Some vehicles may have more than one programmable controller-examples include
PCM, BCM, VDT, IPC.
h. Select the appropriate controller for the vehicle being serviced.
i. Identify the type of programming to be performed.
Normal is used for updating an existing calibration or programming a new controller.
VCI (Vehicle Configuration Index) is also used for updating an existing controller or programming a
new controller, but is used for newer vehicles whose VINs aren't yet in the database. For these
vehicles, contact Techline Customer Support, at 1-888-337-1010 for assistance.
Reconfigure is used to reconfigure a vehicle, such as a truck, for changes in tire size and axle ratios.
Page 8-20Tech 2
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