Laser 5091 Instructions Manual
www.lasertools.co.uk
5091
Laser 5091
OBDII/EOBD Code Reader
The CAN OBDII/EOBD Code Reader is an innovative and affordable
solution specially designed for the owner to get easy and quick
access to engine problems on all OBDII compliant petrol vehicles
(2001<) and diesel vehicles (2004<) sold worldwide.
Instructions
Laser 5091 Code Reader User’s Guide
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Laser 5091 Code Reader User’s Guide
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Safety Information
For your own safety and the safety of others, and to prevent damage to the equipment and
vehicles, read this manual thoroughly before operating your code reader. The safety messages
presented below and throughout this user’s manual are reminders to the operator to exercise
extreme care when using this device. Always refer to and follow safety messages and test
procedures provided by vehicle manufacturer. Read, understand and follow all safety messages
and instructions in this manual.
Safety Message Conventions Used
We provide safety messages to help prevent personal injury and equipment damage. Below are
signal words we used to indicate the hazard level in a condition.
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious
injury to the operator or to bystanders.
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious
injury to the operator or to bystanders.
Indicates a potentially hazardou
s situa
tion which, if not avoided, may result in moderate or minor
injury to the operator or to bystanders.
Important Safety Instructions
And always use your code reader as described in the user’s manual, and follow all safety
messages.
● Do not route the test cable in a manner that would interfere with driving controls.
● Do not exceed voltage limits between inputs specified in this user’s manual.
● Always wear ANSI approved goggles to protect your eyes from propelled objects as well as hot
or caustic liquids.
● Fuel, oil vapors, hot steam, hot toxic exhaust gases, acid, refrigerant and other debris produced
by a malfunction engine can cause serious injury or death. Do not use the code reader in areas
where explosive vapor may collect, such as in below-ground pits, confined areas, or areas that
are less than 18 inches (45 cm) above the floor.
● Do not smoke, strike a match, or cause a spark near the vehicle while testing and keep all
sparks, heated items and open flames away from the battery and fuel / fue
l vapors as they are
highly flammable.
● Keep a dry chemical fire extinguisher suitable for gasoline, chemical and electrical fires in work
area.
● Always be aware of rotating parts that move at high speed when an engine is running and keep
a safe distance from these parts as well as other potentially moving objects to avoid serious
injury.
● Do not touch engine components that get very hot when an engine is running to avoid severe
burns.
● Block drive wheels before testing with engine running. Put the transmission in park (for
automatic transmission) or neutral (for manual transmission). And never leave a running engine
unattended.
● Do not wear jewellry or loose fitting clothing when working on engine.
S
AFETY INFORMATION..................................................................................................................... 4
S
AFETY MESSAGE CONVENTIONS USED ............................................................................................. 4
I
MPORTANT SAFETY INSTRUCTIONS .................................................................................................... 4
1 USING THIS MANUAL ..................................................................................................................... 7
1.1
BOLD TEXT ................................................................................................................................. 7
1.2
SYMBOLS AND ICONS ................................................................................................................... 7
1.2.1 Solid Spot........................................................................................................................... 7
1.2.2 Arrow Icon .......................................................................................................................... 7
1.2.3 Note and Important Message ............................................................................................. 7
2 INTRODUCTION .............................................................................................................................. 7
2.1
CODE READER DESCRIPTIONS ...................................................................................................... 8
2.2
ACCESSORY DESCRIPTIONS ......................................................................................................... 8
2.3
TECHNICAL SPECIFICATIONS......................................................................................................... 9
3 GETTING STARTED ...............................
......................................................................................... 9
3.1
PROVIDING POWER TO CODE READER ........................................................................................... 9
3.1.1 Connecting to Vehicle Power ............................................................................................. 9
3.1.2 Connecting to Personal Computer with USB Cable ............................................................ 9
3.2
APPLICATION OVERVIEW .............................................................................................................. 9
4 OBDII/EOBD OPERATIONS .......................................................................................................... 10
4.1
READ CODES ............................................................................................................................ 11
4.2
ERASE CODES ........................................................................................................................... 13
4.3
LIVE DATA ................................................................................................................................ . 14
4.3.1 View Data......................................................................................................................... 14
4.3.2 Record Data ..................................................................................................................... 17
4.3.3 Playback Data .................................................................................................................. 20
4.4
FREEZE FRAME ......................................................................................................................... 21
4.5
READ I/M READINESS STATUS DATA ........................................................................................... 22
4.6
O2 MONITOR TEST .................................................................................................................... 25
4.7
ON-BOARD MONITOR TEST ........................................................................................................ 26
4.8
COMPONENT TEST ..................................................................................................................... 29
4.9
REQUEST VEHICLE INFORMATION ............................................................................................... 29
4.10
MODULES PRESENT ................................................................................................................. 30
5 DTC LOOKUP ................................................................................................................................ 31
6 REVIEW DATA ............................................................................................................................... 32
7 SYSTEM SETUP ............................................................................................................................ 33
7.1
SELECT LANGUAGE.................................................................................................................... 33
7.2
CONFIGURE MONITORS .............................................................................................................. 34
Table of Contents
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7.2.1 Spark IGN Required Monitors........................................................................................... 35
7.2.2 Compression IGN Required Monitors ............................................................................... 36
7.2.3 Allowed INC Monitors ....................................................................................................... 37
7.2.4 Reset Factory Default ....................................................................................................... 38
7.3
UNIT OF MEASURE ..................................................................................................................... 38
7.4
KEY BEEP SET .......................................................................................................................... 39
7.5
DIAG BEEP SET ......................................................................................................................... 40
7.6
TOOL SELF-TEST ....................................................................................................................... 41
7.6.1 Display Test ..................................................................................................................... 41
7.6.2 Keypad Test ..................................................................................................................... 41
7.6.3 LED Test .......................................................................................................................... 42
8 TOOL INFORMATION .................................................................................................................... 43
9 PRINTING AND UPDATE .............................................................................................................. 44
9.1
UPDATE THE CODE READER ....................................................................................................... 44
9.2
PRINTING DATA ......................................................................................................................... 45
9.3
SEARCHING DTC ....................................................................................................................... 47
9.4
USER MANUAL ........................................................................................................................... 47
9.5
UPDATE TOOL SETTINGS ............................................................................................................ 48
1 Using This Manual
Below are the conventions we use in this manual:
1.1 Bold Text
Bold text is used to highlight selectable items such as buttons and menu options.
Example:
Press the ENTER button to select.
1.2 Symbols and Icons
1.2.1 Solid Spot
Operation tips and lists that apply to specific tool are introduced by a solid spot●.
Example:
When System Setup is selected, a menu that lists all available options displays. Menu options
include:
Languages.
Configure monitors
Unit of measure.
Key Beep Set
D
iag Beep Set
Tool self-test
1.2.2 Arrow Icon
An arrow icon indicates a procedure.
Example:
To change menu language:
1. Use the UP/DOWN key to highlight Language on the menu.
2. Press the ENTER button to select.
1.2.3 Note and Important Message
Note:
A NOTE provides helpful information such as additional explanations, tips, and comments.
Example:
NOTE:
Test results do not necessarily indicate a faulty component or system.
Important
IMPORTANT indicates a situation which, if not avoided, may result in damage to the test
equipment or vehicle.
Example:
IMPORTANT:
Do not soak keypad as water might find its way into the code reader.
2 Introduction
The LASER 5091 is an OBDII and EOBD code reader; it is specially designed to support all 10 OBDII
service modes, including live data, O2 sensor test and more, on OBDII/EOBD compliant cars, SUVs,
and light commercial vehicles sold worldwide since 2001 (petrol engines) / 2004 (diesel engines).
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Figure 2-1 Front View
A. OBD II Cable - provides communication for vehicle DLC.
B. LCD Display - shows menus, test results and operation tips.
C. Green LED Display - indicates the engine system is working normally (all monitors on the
vehicles are active and performing their diagnostic testing), and no DTCs are found.
D. Yellow LED Display - shows the tool finds a possible problem. Pending DTCs exist or/and
some of the vehicle’s emission monitors have not run their diagnostic testing.
E. Red LED Displa y - indicates there are some problems in one or more of the vehicle’s systems.
In this case, the MIL lamp on the instrument panel is on.
F. UP Key - quick access to the Read Codes function before going to diagnostic menu and moves
selection up. When looking up DTC, it is used to change value of selected character.
G. DOWN Key - Quick access to the Clear Codes function before going to diagnostic menu and
moves selection down. When looking up DTC, it is used to change valu
e of selected character.
H. LEFT SCROLL KEY - goes to previous character when looking up DTCs. Scrolls back and
forth through codes found and through different screens of data. Also it is used to make
selection of PIDs when viewing custom PID list, and to view PID graphs.
I. RIGHT SCROLL KEY -
goes to next character when looking up DTCs. Scrolls back and forth
through codes found and through different screens of data. Also it is used to cancel all
selections of PIDs when viewing custom PID
list.
J. One Click I/M Readiness Key - quick checks state emissions readiness and drive cycle
verification.
K. BACK Key - cancels an action and returns to previous screen or level.
L. ENTER Key - confirms an action or movement and moves to next level.
M. Power Switch - reboot the code reader
N. HELP Key - accesses to the Help function and it is also used to update the code reader when
long pressed.
O. USB Port – provides a USB connection between the code reader and PC or laptop.
2.2 Accessory Descriptions
This section lists the accessories that go with the code reader. If you find any of the following
items missing from your package, contact your local dealer for assistance.
2.1 Code Reader Descriptions
1 User’s Guide - provides operation instructions for the usage of the code reader.
2 USB Cable - provides connection between the code reader and a computer to upgrade the tool.
3 Software CD – includes the user’s manual, NT Wonder update software and update files.
2.3 Technical Specifications
Display : 2.8" TFT colour display
Working Temperature : 0 to 60ºC (32 to 140ºF
)
Storage Temperature : -20 to 70ºC (-4 to 158ºF
)
Power Supply : 8-18V vehicle power
Supported Protocols:
J1859-41.6, J1850-10.4, ISO9141, KWP2000 (ISO 14230), and CAN
(Control Area Network ISO 11898)
Dimensions ( L*W*H): 145*94*32mm
Weight : 0.6kg
3 Getting Started
This section describes how to provide power to the code reader, provides brief introductions of
applications loaded on the code reader and display screen layout and illustrates how to input text
and numbers with the code reader.
3.1 Providing Power to Code reader
Before using the code reader, make sure to provide power to the code reader.
The unit operates on any of the following sources:
12-volt veh
icle
power
USB connection to personal computer.
3.1.1 Connecting to Vehicle Power
The code reader normally powers on whenever it is connected to the data link connector (DLC).
To connect to vehicle power:
1. Locate the data link connector (DLC). The DLC is generally located under the dash on the
driver side of the vehicle.
2. Connect the code reader with the DLC.
3. Switch the ignition key to the ON position.
4. The code reader automatically boots up.
IMPORTANT
Never try to provide power for the code reader from USB connection when the code reader is
communicating with a vehicle.
3.1.2 Connecting to Personal Computer with USB Cable
The code reader also receives power through the USB port when it is connected to a PC for
updating software and transferring saved files.
To connect to PC:
1. Insert the small end of the USB cable to the USB port at the right side of the code reader and
the large end to a computer.
2. Press the power switch of the code reader to power it on.
3.2 Application Overview
When the code reader boots up, the Home screen opens. This screen shows all applications
loaded on the unit.
Follo
wing applications are preloaded into the code reader:
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Diagnostics – leads to OBDII screens for all 9 generic OBD system tests.
DTC Lookup – leads to screens for diagnostic trouble code lookup.
Review Data – leads to screens for access to tested data files.
Print Data – leads to screens for access to printing function
About – leads to screen that shows information about the code reader.
Setup – leads to screens for adjusting default settings to meet your own preference when
using the code reader.
Figure 3.1 Sampl
e Home Screen
4 OBDII/EOBD Operations
OBD-II/EOBD menu lets you access all OBD service modes. According to ISO 9141-2, ISO
14230-4, and SAE J1850 standards, the OBD application is divided into several sub programs,
called ‘Service $xx’. Below is a list of OBD diagnostic services:
● Service $01 - request current powertrain diagnostic data
● Service $02 - request powertrain freeze frame data
● Service $03 - request emission-related diagnostic trouble codes
● Service $04 - clear/reset emission-related diagnostic information
● Service $05 - request oxygen sensor monitoring test results
● Service $06 - request on-board monitoring test results for specific monitored systems
● Service $07 - request emission-related diagnostic trouble codes detected during current or
last completed driving cycle
● Service $08 - request control of on-board system, test or component
● Service $09 - request Vehicle Information
● Service $0A - request Emission related DTCs with permanent status
When Diagnostics application is selected from Home screen, the code reader starts to detect the
communication protocol automatically. Once the connection has established, a menu that lists all
of the tests available on the identified vehicle displays. Menu options typically include:
● Read Codes
● Freeze Frame Data
● Erase Codes
● Live Data
● I/M Readiness
● O2 Sensor Test
● On-board Monitor Test
● Component Test
● Vehicle Information
● Modules Present
● Unit of measure
NOTE:
Not all function options listed above are applicable to all vehicles. Available options may vary by
the year, model, and make of the test vehicle. A “The selected mode is not supported!” message
displays if the option is not applicable to the vehicle under test. When the code reader links to
vehicle, it checks the status of I/M Monitors automatically, and gives a summary report on the
display as illustrated below.
The following applications are preloaded into the code reader:
Figure 4-1 Sample System Status Screen
NOTE:
If vehicle is equipped with more than one computer module (for example a powertrain control
module [PCM] and a transmission control module [TCM]), the code reader identifies them by their
identification names (ID) assigned by manufacturer (i.e. Engine or Module $A4).
A screen with prompted information to erase the previously stored data in order to save the data
from this test displays as below.
Figure 4-2 Sample Erase the Previous Stored Data Screen
If previous data is to be erased, select Yes; if data is not to be erased, Use the LEFT/RIGHT key
to pick No. Wait a few seconds to return to Diagnostic Menu.
NOTE:
If no data is stored in the code reader, the above screen will not show up.
4.1 Read Codes
Read Codes menu lets you read stored codes, pending codes and permanent does found in the
control unit. Typical menu options include:
● Stored Codes
● Pending Codes
● Permanent Codes
Diagnostic trouble codes stored in a control module are used to help identify the cause of a
trouble or troubles with a vehicle. These codes have occurred a specific number of times and
indicate a problem that requires repair.
Pending codes are referred to as maturing codes that indicate intermittent faults. If the fault does
not occur wi
thin a certain number of drive cycles (depending on vehicle), the code clears from
memory. If a fault occurs a specific number of times, the code matures into a DTC and the MIL
illuminates or blinks.
Permanent Codes are DTCs that are "confirmed" and are retained in the non-volatile memory of
the computer until the appropriate monitor for each DTC has determined that the malfunction is
no longer present and is not commanding the MIL on. Permanent DTC shall be stored in
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non-volatile memory and may not be erased by any diagnostic services or by disconnecting
power to ECU.
There are two ways to read codes using 5091.
● Press the Read hot key to read codes from home sc reen.
● Traditional way: select Read Codes from the diagnostic menu.
To read codes from a vehicle:
1. Press the Read hot key to directly read the codes from hom e screen. Or scroll with the
UP/DOWN key to highlight Read Codes from Diagnostic Menu and press the ENTER key.
Figure 4-3 Sample Diagnostic Menu
Screen
2. Select Stored Codes/Pending Codes/ Permanent Codes and press the ENTER key to
confirm.
Figure 4-4 Sample Read Codes Screen
3. A code list including code number and its description displays.
Figure 4-5 Sample DTC Description Screen
NOTE:
If no DTCs are present, the message “No (Pending) Codes Found!” is displayed. If any
manufacturer specific or enhanced codes detected, 5091 reads the correct DTC information
automatically according to the VIN.
4.2 Erase Codes
Erase Codes menu lets you to clear all current and stored DTCs from the control module. Also it
erases all temporary ECU information, including freeze frame. So mak e sure that the selected
system are completely checked and serviced by technicians and no vital information will be lost
before clearing codes.
There are two ways to erase codes:
● P ress the Erase hot key to erase codes from home scr een.
● Traditional way: select Erase Codes from the diagnostic me
nu.
NOTE:
● To clear codes, make sure that the ignition key is switched to ON with the engine off.
● Erase Codes does not fix the problem that caused the fault! DT Cs should only be erased after
correcting the condition(s) that caused them.
To clear codes:
1. Press the Erase hot key to directly erase the codes from the home menu. Or use the
UP/DOWN key to highlight Erase Codes from Diagnostic Menu and press the ENTER key.
Figure 4-6 Sample Diagnostic Menu Screen
2. Follow the on-screen instructions and answer questions about the vehicle being tested to
complete the procedure.
Figure 4-7 Sample Erase Codes Screen
3. Check the codes again. If any codes remain, repeat the Erase Codes steps.
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4.3 Live Data
Live Data menu lets you view, record and playback real time PID data from the electronic control
module.
Menu options typically include:
● View Data
● Record Data
● Playback Data
4.3.1 View Data
The View Data function allows real time viewing of the vehicle’s electronic control unit’s PID data,
including sensor data, operation of switches, solenoids and relays.
Menu options typically include:
● Complete Data
● Custom Data
● Unit of measure (Please refer to Chapter 7 System Set up)
4.3.1.1 Complete Data Set
Complete Data Set displays all supported PIDs of the vehicle being tested.
To view all live PID data:
1. Use the UP/DOWN key to highlight Live Data from Diagnostic Menu and press the ENTER
key.
Figure 4-8 Sample Diagnostic Menu Screen
2. Select View Data from the list and press ENTER key to confirm.
Figure 4-9 Sample Live Data Menu Screen
3. Select Complete Data Set from the menu and press the ENTER key to display the da
tast
ream
screen.
Figure 4-10 Sample View Data Menu Screen
4. Scroll with the up and down arrow keys to scroll through data to select lines, and left and right
arrow keys to scroll back and forth through different screens of data.
Figure 4-11 Sample Complete List Screen
5. Press the ENTER key to view PID graph if the PID gives a numeric reading.
Figure 4-12 Sample PID Graph Screen
6. Use the BACK key to return to diagnostic menu.
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Figure 4-13 Sample Live Data Menu Screen
2. The custom datastream selection screen displays.
Figure 4-14 Sample Custom Datastream Selection Screen
3. Use the RIGHT key to select or deselect a line or press LEFT key to deselect all if needed .
Press the ENTER key to confirm and BACK key to cancel.
Figure 4-15 Sample Custom Datastream Screen
4. When finished selection, press the ENTER key to display selected items.
4.3.1.2 Custom Data L
ist
Custom Data List menu lets you to minimize the number of PIDs on the data list and focus on any
suspicious or symptom-specific data parameters.
To create a custom data list:
1. Select Custom List from the menu and press the ENTER key.
Figure 4-16 Sample Datastream Screen
4.3.2 Record Data
The Record Data function is used to record PIDs to help diagnose intermittent drivability problems that
can’t be determined by any other method.
Menu options typically include:
●
Complete Data
● Custom Data
● Unit of measure (Please refer to Chapter 7 Set Up)
NOTE
There are two types of trigger methods used.
● Manual Trigger---triggers recording whenever operators press the ENTER key.
● DTC trigger--- automatically triggers recording when a code is detected by vehicle. DTC Trigger
is not available on all vehicles. Some vehicles need to be driven for a long period of time to store
a code after a drivability fault occurs. If DTC trigger is selected to make a recording, there might
not be drastic change in the data before and after trigger.
Do not operate the code reader while driving; always have two persons in vehicle when recording – one
to drive and the other to operate the code reader.
To record data:
1. Select Record data from the menu and press the ENTER key.
Figure 4-17 Sample Live Data Menu Screen
2. Refer to View Data to set up Complete Data Set or Customer Data Set to record.
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