starting ISUZU TFR SERIES 1997 Workshop Manual

3
Isuzu TFR/S Immobilizer System Introduction
This manual is an introduction of immobilizer system for service readiness view.
An electrical immobilizer is available as of Model Year 2001 TFR/S to prevent unauthorized persons from starting
the engine. To support customers, there are some important items your organization needs to provide. If fails, your
organization and lsuzu Motors may face severe customer complains.
What your organization should provide for your customer
Car Pass
For a new owner, your dealership must hand Car Pass card, which has identification numbers of new owner's
vehicle immobilizer system. This information is very important in case of repair or lost of transponder.
The followings are necessary items provided by your responsibility.
1) Car Pass with identification for a new owner
2) Blank Car Pass Card when it is for reissue
3) Instruction to dealers how to use Car Pass Card
Security code management
Your organization must keep security codes for all vehicles as confidential data. Once the security codes are
lost, anybody who have the security code can access the immobilizer system. Your organization has
responsibility of any missing vehicles caused by stolen security code.
Customer support
Lost Car Pass may happen when customer needs security code. Your organization sets up release security
code process with verification procedure.
Sometimes customer needs security code in urgent manner. Therefore Isuzu recommends your organization
organizes 24 hours support.
Essential tool
Your dealership must have Tech 2, and Tech 2 updated software for immobilizer system.
Dealer training
Dealer technician must be trained how to diagnose, program, reprogram the immobilizer system. Even though
no problem happens, customer may request additional transponders when releases new vehicle to customer, or
even afterward.
Before sales start, dealer training must be done.

26
Diagnostic procedure
System guidance
Engine does not run when any Diagnostic Trouble Code (DTC) is flagged, starting from 01MY TFR/S.
Once the cause of DTC is repaired or gone, engine can be operated normally, and present DTC becomes
history code.
History code is canceled by no repeat failure on 25 consequence ignition key On afterward.
History code cannot be canceled by battery connector disconnected, starting from 01MY
Diagnostic Trouble Code (DTC) list
Code
(BCD)Item Detecting Condition
B0011 TRANSPONDER
KEY PROBLEMTransponder code unsuccessfully read 5 consecutive time.
(Not completely read in 500ms transponder code)
B0012 WRONG
TRANSPONDER
KEYTransponder code read from the ignition key does not match the
transponder code stored in the control unit.
B0013 IMMOBILIZER NOT
PROGRAMMEDImmobilizer program no executed.
B0014 NO TRANSPONDER
KEY PROGRAMMEDProcessing to save the transponder key in the control unit not
executed.
B0015 VEHICLE SPEED
SIGNAL Lo (Gas)
FREQUENCY
SIGNAL Lo (Diesel)Lo level (2.5v or less) input during the Hi level was being output
in the immobilizer signal. (Gas)
Lo level (2.5v or less) input during the Hi level was being output to the
communication line. (Diesel)
B0016 VEHICLE SPEED
SIGNAL Hi (Gas)
FREQUENCY
SIGNAL Hi (Diesel)Hi level (more than 2.5v) input during the Lo level was being output in
the immobilizer signal. (Gas)
Hi level (more than 2.5v) input during the Lo level was being output to
the communication line. (Diesel)
B0017 NO ENGINE
REQUEST
RECEIVEDNo request signal received from the engine control unit in a second
after the ignition key has been placed at ON.
(Gas engine only)
B0023 ANTENNA COIL
OPENAntenna coil not connected.
B0024 WRONG
TRANSPONDER
RESPONSETransponder response signal with the challenge is wrong.
B0025 WRONG ENGINE
REQUESTThe challenge signal from the engine control unit is invalid.
(Gas engine only)
B0055 EEPROM ERROR Write and read cannot be correctly made to and from the EEPROM in
the control unit.