1998 ISUZU TROOPER Ecm

8DÐ32 WIRING SYSTEM
LHD Models
FL-4
30A COND.FAN
Indication on label
BOFF
STIG2 ACC
STARTER SW
+
_
O SENSOR (V6)
HORN, HAZARD
H/LAMP-LH(HI)
H/LAMP-RH(HI)
(FRT . FOG)
ABS
F/ PUMP (V6)
P/ WINDOW, S/ ROOF,
P/SEAT
STARTER RELAY
TURN, BACK
ELEC. IGN.
FRT WIPER & WASHER
RR WIPER & WASHER
H/ LAMP WIPER
ENGINE
IGN. COIL (G)
FUEL CUT (D)
METER, GAUGE
AUDIO(ACC)
MIRROR
CIGAR
STOP, A/T CONT.
AUDIO(B)
TEL(B)
CLOCK(B)
ROOM
RR DEFOG
DOOR LOCK
IG1B
STARTER
C
B
AC GENERATOR
BL
IG
F-1
F-2 10A
F-3 15A
F-4 10A
F-5 10A
F-8 20A
F-9 20A
F-10 15A
C/B-2 30A
C-1 10A
C-3 10A
C-4 10A
C-5 15A
C-6 10A
C-7 10A
C-8 15A
C-9 15A
C-10 10A
C-11 10A
C-12 20A
C-14 15A
C-15 20A
C-16 10A
C-17 25A
C-18 20A RELAY; STARTERCHARGE SIGNAL
FUSE BOX
RELAY; ECM MAIN
FUEL
INJECTOR ECM
HYDRAULIC
UNIT FL-3
30A ECM
FL-6
40A ABS
FL-2
50A KEY SW FL-1
80A MAIN2
2
1
ECM
5 W
5 W
8 B/R 5 W
F-6 10A
F-7 10A
F-11 10A RELAY & FUSE BOX
C-2 15A
BLOWERC-19 25A
C-20 10A
5 W 5 W
5 W
1.25 R
5 W
5 W
2 R 2 R3 W
3 B/R
3 W
3 W/G
3 B/Y 3 B/Y
5 W 5 W
3 B/W
3 W/B
3 W/B 3 W/B3 W/G 2 W
30 B/R
0.85 B/Y
3 L/B
3 W
1.25 R/G
SFL-2
(DIESEL)
SEAT HEATER
FL-3
40A C/HEATER
FL-5
50A GLOW
CERAMIC HEATER
(DIESEL)
GLOW PLUG
(DIESEL)
3 W
3 W
24
3 W/L
3 R/W
ANTI THEFTC-13 10A
3 B/Y
3 B/R
RELAY; FUEL PUMP
42
TAIL-RH
3 G/Y
5 W
2 W
AIR CON
RELAY; HEATER & A/C
24
3 W
3 L/R
F-12 10ARELAY; TAIL
24H/LAMP-LH(LO)
H/LAMP-RH(LO)
3
1
2 Y/R RELAY: DIMMER2 Y/G
2
3
1RELAY: LIGHTING
TAIL-LH
RELAY; CONDENSER FAN
131.25 L
1.25 L/O
CONDENSER FAN
D08RV552

8DÐ34 WIRING SYSTEM
Connector No. Cable harness Location Parts (Load)
C-39
Windshield washer motor1
C-39
Windshield wiper motor2
C-39
FRT fog light relay4
C-39Meter, Vehicle speed sensor (Meter),
Fuel tank unit 6
Engine room
harnessFender-RH
E-28
ECM, O2 sensor
E-29ECM, Data link connector
Engine ECGI
harnessEngine-common
chamber
R-3
RR washer motor, Rear wiper motor, Luggage
room light, RR defogger, High mount stoplight,
Tailgate key SW, RR door lock actuator-LH,
Tailgate lock actuator-LH, RR power window
SW-LH
R-4Taillight, Stoplight, RR turn signal light, Backup
light, License plate light, Fuel tank unit, Fuel
pump, Trailer harness connector, RR fog light Rear body
harnessBody-RR
E-30
E-31ECM, Data link connector, A/T Shift indicator
control unit DIS
C-39Fuel pump relay, ECM main relay 5
C-39Windshield intermittent relay3
M-16
TCMMission
harnessEngine
C-39Side turn signal light (RH) 7
C-39Vehicle speed sensor, Brake fluid SW 8
I-39
AudioInstrument
harnessBody-FRT
C-85
EBCMEngine room
harnessBody-Center
U-2
SDMSRS
harnessBody-FRT

8DÐ36 WIRING SYSTEM
Connector No. Cable harness Location Parts (Load)
C-39
Windshield washer motor, Side turn signal
light (RH)1
C-39
Windshield wiper motor2
C-39
Headlight-LH, FRT fog light relay4
C-39Meter, Vehicle speed sensor (Meter),
Fuel tank unit 6
Engine room
harnessFender-RH
E-28
ECM, O2 sensor
E-29ECM, Data link connector
Engine ECGI
harnessEngine-common
chamber
R-3
RR washer motor, Rear wiper motor, Luggage
room light, RR defogger, Tailgate key SW,
Tailgate lock actuator-LH, RR Door lock
actuator-LH, High mount stoplight, RR power
window SW-LH
R-4Taillight, Stoplight, RR turn signal light, License
plate light, Fuel tank unit, Fuel pump, Backup
light Rear body
harnessBody-RR
E-30
E-31ECM, Data link connector, A/T Shift indicator
control unit DIS
C-39Condenser fan (Saudi Arabia)
5
C-39Windshield intermittent relay3
M-16
TCMMission
harnessEngine
C-39Pump & VSV, Headlight-RH, Fuel pump relay,
ECM main relay 7
C-39High-beam indicator light, Vehicle speed
sensor, Headlight wiper timer 8
I-39
AudioInstrument
harnessBody-FRT C-85
EBCMBody-Center

WIRING SYSTEM 8DÐ59
Circuit Diagram (4JX1) Ð 1
P-2H-142
2B-11
P-10
P-7
STARTER
RELAY
(4)
P-6BODY ENGINE FRAMEBATTERY
STARTER
SWFUSE & RELAY BOX
FL-2 50A
KEY SW FL-1 80A
MAIN 8.0
B/R
8.0
B30.0
B8.0
B
3.0
W/B
3.0
W/B
3.0
W/B
3.0
B/Y3.0
W/G3.0
B/R3.0
L/B 3.0
W/B 3.0
W/B 30.0
B/R
B-11IG1 ST IG2 ACC B1
7
EFG
A
B-11
3B
B-11
5C
B-11
1DB2
OFF 4
B-11
STARTER
(B)
P-5P-1´
µ
X-112
4X-11ECM
(J3-1)
ECM
RELAY-1
FL-4 50A
ECM
3.0
R 3.0
W/B
X-102
4X-10ECM
(J3-2)
ECM
3&-":
3.0
R/W3.0
W/B
D08RWB17

WIRING SYSTEM 8DÐ65
Circuit Diagram (Diesel) Ð 4
A
B
3.0
B/Y3.0
B/Y
3.0
B/Y3.0
B/Y3.0
W/G3.0
B/R
3.0
B/R 3.0
B/Y
0.5
R/B
HAZARD
WARNING
SW
(8)C-3 10A
TURN
BACK
0.5
L/WC-4 10A
ELEC.
IGN.
0.5
L/Y
METER ECM
(J2-9) "-"3.

3&-":
$0/530-
6/*5C-10 10A
METER
GAUGE
0.5
W/R
STARTER
RELAY
(6)C-1 10A
STARTER
RELAY
0.85
W/L
WINDSHIELD
WIPER
MOTORC-5 15A
FRT WIPER
& WASHERC-6 10A
RR WIPER
& WASHERC-7 10A
H/LAMP
WIPER
'64&
#09
C-8 15A
ENGINE
0.5
L/B
RR
WIPER
MOTORHEADLIGHT
WIPER
MOTOR
0.85
B/Y
0.5
R
0.75
B/R
SDM
(12)C-21 10A
SRS
C
1.25
G/R
SEAT
HEATERC-2 15A
SEAT
HEATER
H-631
3
H-63

D08RWB20

WIRING SYSTEM 8DÐ447
I-9I-10
Inspection of a waveform by oscilloscope
1. Connect a resistance of 1.3 to 5k ohm (1.4W or more) between the harness side connectors 15 I-9
and 5 I-10 (w/o TOD) or 26 I-9 and 5 I-10
2.
3.
4.Install a speedometer tester.
Turn on the starter SW.
Check the waveform at the time when the car speed is at 60 km/h.
Normal waveform
OV
23.6m sec.
2V or lessApproximate battery voltage
1234567 891011121314
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 301234
13 145678910
15 16 17 18 19 20
111221 22
2. Tachometer
2-1. Tachometer Does Not Function
·IS THE PULSE INPUT NORMAL?
YES
REPLACE THE PCM, ECM OR REPAIR A POOR
CONNECTION AT THE CONNECTORS IN THE CIRCUIT
OR A FAILURE IN THE CABLE HARNESS
NO
REPLACE THE METER ASSEMBLY

8DÐ448 WIRING SYSTEM
2-2. Tachometer Needle Fluctuates (May Be Wide Fluctuation)
·IS THE PULSE INPUT NORMAL?
YES
THE WAVEFORM BY OSCILLOSCOPE IS DEFORMED
(ABNORMAL INPUT)
NO
REPLACE THE METER ASSEMBLY
REPLACE THE PCM, ECM OR REPAIR A POOR
CONNECTION AT THE CONNECTORS IN THE CIRCUIT
OR A FAILURE IN THE CABLE HARNESS
2-3. Tachometer Needle Jumps Erratically
·IS THE PULSE INPUT NORMAL?
YES
AN ABNORMAL PERIODIC WAVEFORM IS OUTPUT
BY OSCILLOSCOPE
NO
REPLACE THE METER ASSEMBLY
REPLACE THE PCM, ECM OR REPAIR A POOR
CONNECTION AT THE CONNECTORS IN THE CIRCUIT
OR A FAILURE IN THE HARNESS

SUPPLEMENTAL RESTRAINT SYSTEM 9J±48
Passenger Air Bag Assembly
Service Precautions
WARNING: S A F E T Y P R ECAUTIONS MUST BE
FOLLOWED WHEN HANDLING A DEPLOYED AIR
BAG ASSEMBLY. AFTER DEPLOYMENT, THE AIR
BAG ASSEMBLY SURFACE MAY CONTAIN A SMALL
AMOUNT OF SODIUM HYDROXIDE, A BY±PRODUCT
OF THE DEPLOYMENT REACTION, THAT IS
IRRITATING TO THE SKIN AND EYES. MOST OF THE
POWER ON THE AIR BAG ASSEMBLY IS
HARMLESS. AS A PRECAUTION, WEAR GLOVES
AND SAFETY GLASSES WHEN HANDLING A
DEPLOYED AIR BAG ASSEMBLY, AND WASH YOUR
HANDS WITH MILD SOAP AND WATER
AFTERWARDS.
WARNING: W H E N C A R RY I N G A L I V E A I R B A G
ASSEMBLY, MAKE SURE THE BAG AND TRIM
COVER ARE POINTED AWAY FROM YOU. NEVER
CARRY AIR BAG ASSEMBLY BY THE WIRES OR
CONNECTOR ON THE UNDERSIDE OF MODULE. IN
THE CASE OF AN ACCIDENTAL DEPLOYMENT, THE
BAG WILL THEN DEPLOY WITH MINIMAL CHANCE
OF INJURY. WHEN PLACING ALIVE AIR BAG
ASSEMBLY ON A BENCH OR OTHER SURFACE,
ALWAYS FACE BAG AND RIM COVER UP, AWAY
FROM THE SURFACE. NEVER REST A STEERING
COLUMN ASSEMBLY ON THE STEERING WHEEL
WITH THE AIR BAG ASSEMBLY FACE DOWN AND
COLUMN VERTICAL. THIS IS NECESSARY SO THAT
A FREE SPACE IS PROVIDED TO ALLOW THE AIR
BAG ASSEMBLY TO EXPAND IN THE UNLIKELY
EVENT OF ACCIDENTAL DEPLOYMENT.
OTHERWISE, PERSONAL INJURY COULD RESULT.
NOTE: IN THE EVENT DEPLOYMENT HAS
OCCURRED, INSPECT COIL ASSEMBLY WIRE FOR
ANY SIGNS OF SCORCHING, MELTING OR ANY
OTHER DAMAGE DUE TO EXCESSIVE HEAT. IF THE
COIL HAS BEEN DAMAGED, REPLACE IT.
Removal
827RS001
1. Disable the SRS (Refer to ªDisabling the SRS º in this
section).
2. Remove gear control knob.
3. Remove front console assembly.
4. Remove rear console assembly and disconnect
harness connector.
5. Remove ECM and SDM cover.
6. Remove glove box assembly with lid.
7. Remove glove box cover.
8. Remove instrument panel assist side lower cover.
9. Disconnect engine hood opener lever.
10. Remove instrument panel door side lower cover.
11. Remove lower cluster with ashtray.
12. Remove meter cluster assembly and disconnect
harness connector.
13. Remove instrument panel lower center cover.
14. Disconnect passenger air bag assembly harness
connector.
15. Remove air bag assembly fixing bolts and nuts.
16. Remove passenger air bag assembly.
Installation
827RS001
1. Install passenger air bag assembly.
2. Install air bag assembly fixing bolts, nuts and tighten
to specified torque.
Torque: 6 N´m (0.6 Kg´m/52 Ib in)
3. Connect air bag assembly harness connector.
4. Install instrument panel lower center cover.
5. Install meter cluster assembly and connect harness
connector.
6. Install lower cluster with ashtray.
7. Install instrument panel door side lower cover.
8. Connect engine hood opener lever.
9. Install instrument panel assist side lower cover.