engine oil ISUZU TFR SERIES 1997 Workshop Manual

9
Electrical Equipment – Instruments
Terminal Assignment of wiring Harness Connector, Immobilizer Controller
1 Back up voltage supply
2 Voltage from ignition switch ON
3 Communication: carry on line from ECM
to immobilizer (Gas Engine)
Check Engine Lamp (Diesel Engine)
4 DWA (South Africa model only)
5N.C.
6 Antenna coil positive
7 Ground8 Communication: carry on line from
immobilizer to ECM (Gas Engine)
Communication: carry on line from
immobilizer to DDS-1 (Diesel Engine)
9To Tech 2
10 Speed sensor voltage (Gas Engine)
11 N.C.
12 N.C.
13 Antenna coil negative
14 Starter relay

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.

27
Diagnostic procedure
No DTC indicates
Engine does not start to run even though all engine and electrical system are OK, and no DTC appears.
1. 12V power is not supplied to ICU.
Check engine light
Is blinking at 2Hz.ECM or electrical
unit wiring check No
Yes Yes
Starter is not rotated
By correct key at all.Check DTC with Tech 2
12V power is not
supplied to ICU
Repair 12V circuitICU power supply turns off when both +B line
and ignition switch line turn off.
ICU
No.1 Pin
No.2 Pin+B
Ignition SWCheck both wiring systems for continuity.
No
2. Engine does not start after steering assembly is repaired.
Check if connector for Antenna coil circuit at steering shaft is correct, or missing connection.
If not correct, replace the steering assy with corrector.
3. If engine does not start after ICU replacement, check part number (01MY).
Proper parts Numbers are following.
Gas Engine 897228-184X
Suffix number
Diesel Engine 897228-183X
Suffix number

30
B0016VEHICLE SPEED SIGNAL Hi (Gas Engine)
FREQUENCY SIGNAL Hi (Diesel ENGINE)
Disconnect both
connectors and check
voltage on ICU side.
voltage
2.5v
W iring repairYesNo
Clear DTC
B0017NO ENGINE REQUEST RECEIVED (Gas Engine)
Check path ICU
pin 3 and ECM pin B-18(V6)
J2-B4(L4) for continuity
Replace ECM, because ECM internal circuit fails.OK
W iring repair NG
B0023ANTENNA COIL OPEN
Antenna coil open
Check path between
ICU pin 6 and pin 13
for continuity
Replace steering lock AssyNG
Clear DTC
OK OK
Check path between
ICU pin 6 and connector A pin
for continuity
Check path between
ICU pin 13 and connector A pin
for continuity
ICU
A connector 2 pin
6
13
Antenna coil NG
Correction
NG
NG
CorrectionNG

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Immobilizer system Electrical wiring for Diesel Engine
(4JG2 3.1L/4JB1 2.8L/4JA1 2.5L)
BATT3W/B
PA 0 3(4)
3W/B
PA 0 2
0.5G/R
DA010.5Y
MA010.5B/W
LA060.5L/W
LA27
0.85W/G
MB080.5B
LX21 3B
LA043B/W
LA25
3B/Y
PA 0 50.85W/G
HB12
0.5R/W
MB07 STOP LAMP SW
0.5G
IB20
0.5B ZZ07
0.5B ZZ06
0.5O/B
MB04HORN
9 (2)
MAIN
100A
STOP
10AENGINE
15A
METER
10A40A
IGN-B1 8B/R
PA 0 1
B2
B1ACC OFF
IG2
IG1 STSW ; STARTER
(STEERING LOCK)RELAY ;
STARTER
40A
IGN-B2
HORN
10A
0.5Y
MB056
0.5L
MB0613
0.5B
MY017
0.5B
MY02
FUEL CUT VALVE
(INJ PUMP)MB03
0.85W/G
HB09
1
0.5BR/Y
MA423
0.5O/L
MB0114
0.85W/G
MB022
0.5O
MB038
ANT.COIL
(STRG LOCK)
( )
( )
STARTER
IMMOBILIZER CONT
(3)(1) (2)
RELAY ;
IMMOBILIZER
STARTER
10A
(7)
METER
CHECK ENG
BUSBAR
(B-14)
(B-12)
DDS-1 ; IMMOBILIZER
(ENGINE)
: Special connector of DDS-1