ISUZU TFR SERIES 1997 Workshop Manual

29
B0012WRONG TRANSPONDER KEY
Is key correct?
ICU replacement
Rewrite transponder key.
Rewrite all keyOK
OKCheck other keys
Reregister
transponder keyNG
NG
B0013IMMOBILIZER NOT PROGRAMMED
Replace ICU.
B0014NO TRANSPONDER KEY PROGRAMMED
Replace ICU.
B0055EEPROM ERROR
Replace ICU.
B0015VEHICLE SPEED SIGNAL Lo (Gas Engine)
FREQUENCY SIGNAL Lo (Diesel ENGINE)
*Speed sensor signal voltage lower than 2.5v. (Gas)
*Frequency signal voltage lower than 2.5v (Diesel)
Check path and
between ICU pin 8, ECM
pin (Gas), or DDS-1 (Diesel)
for continuity
Disconnect both
connectors and check
path between ICU
and body earth for
continuity
W iring repair
NG
OK

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

31
B0024WRONG TRANSPONDER RESPONSE
Wrong Transponder code
Reregistration
ICU replacementNG
Rewrite transponder

32
4. Electrical wiring
Immobilizer system Electrical wiring for Gas Engine
(6VD1 3.2L)

33
Immobilizer system Electrical wiring for Gas Engine
(C22NE 2.2L/22LE 2.2L/20LE 2.0L)

34
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