Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1533
8-232 ELECTRICAL-BODY AND CHASSIS
ELECTRICAL-BODY AND CHASSIS 8-233
CIRCUIT DIAGRAM (W/ TACHOMETER-UK)
8
B-23
QOS/EGR/QWS
CONTROL UNIT(16)
QOS/EGR/QWS
CONTROL UNIT(5)
0.3W
20
H-8
TIMING BELT
3
F-1
P-1
P-5
30B/Y
+
_
B2
OFF
IG2
ACC
STARTER SW
B1
ST
IG1
6
3 B/R
3 B/R
CB-5
15A METER
IGN B1
40A
P-2
P-10
P-7
5B/Y
ENG.
FRAME
1
0.5 B
F-1
1
0.5 Y/R
11
THERMO UNIT
0.5 Y/B
0.5 Y/B
0.85 B
0.85 B
4
1
3
0.5 B/R
0.5 Y/B
9
1
2
3
H-5
12
H-4
5
H-8
0.85 B
1
2
3
TACHOMETER
FUEL
B-23
B-24
B-23
E-19
E-44
H-4
E-44
E-44
F-1
H-5
H-5
1
0.5 B/R
0.5P
H-15
VEHICLE SPEED
SENSOR
H-8
11
0.3 O/L
C-41
4
H-7
0.85Y
0.85Y
SPEEDOMETER
FUEL GAUGE
ENGINE COOLANT
TEMPERATURE GAUGE
GLOW
SEDIMENTER
0.85 Y
0.85 B
0.85 B
1.25 B
FENDER-LH
C-36
BODY-RR
B-34
6
B-24
5
B-23
B-23
16
B-24
8
FUEL TANK UNIT
0.5 BR/Y
0.5 BR/Y
0.5 L/B
0.5 L/B
0.5 L/B
H-15
8
H-15
7
2
3 W/B
8B/R
0.85Y
0.85Y
10
H-6
22
H-6
12
H-8
16
H-8
METER
0.3 P
0.5 Y/R
7
H-4
0.5 B/R
2
E-36
0.5 B
0.5 B
TACHO SENSOR
2
FUEL FILTER SW C-30
C-30
0.5 B
1.25 B
E-36
B-24
9
H-8
8
1
3
C-41
2
B-24
8-234 ELECTRICAL-BODY AND CHASSIS
SDM(7)
B-37
2
0.5G
FUSE CB-24
1
0.5 Y/G
B-37
AIR BAG
R-4
1
2
C-37
C-37
1
H-9
14
H-8
3
B-23
RELAY;CHARGE(5)
B-23
13
CHARGE
0.85 W/L
C-39
BRAKE FLUID LEVEL SW
H-6
H-6
H-6
20
7
2
H-6
5
4WD SW
1.25B
1
1
B-23
12
B-24
15
H-4
H-4
TURN-LH
TURN-RH
4WD
BRAKE
E-45
E-46
1
H-5
DIMMER・PASSING SW
ILLUMINATION
1
0.3 P/B
0.5 P/B
0.5 P/G
0.5 P/G
0.5 P/G
0.5 P/G
4
HIGH BEAM
B-24
1
C-37
B-23
15
0.5B
0.5B
1.25B
1.25B
0.85B
0. 5R/B
B-24
14
15
COMBINATION SW
HAZARD WARNING SW
1
0.85G/W
FUSE EB-8
3
B-23
B-23
COMBINATION SW
HAZARD WARNING SW
16
0.85G/W
B-24
RELAY;TAIL(1)
13
0.85 G/R
B-24
14
B-23
0.85 G/R
0.85B
0.85B
0.5B
0.5B
0.5P/G
1.25B
15
11
BODY-LH
C-2
B-9
BODY-RH
B-28
FENDER-RH
VACUUM SW
PARKING BRAKE SW(4
×
2)
PARKING BRAKE SW(4
×
4)
1
C-38
OIL PRESSURE SW
1
E-1
0.5R/W
0.3L/R
B-23
10
OIL PRESSURE
0.3L
0.5L
0.85L
0.5L/R
0.5L/R
H-8
2
H-8
4
H-8
14
9
H-6
RR FOG
SEAT BELT
LIGHTING
SWITCH
(W/O POWER WINDOW)
(W/O POWER WINDOW)
B-24
10
0.5P/W
0.5G/Y
0.5G/Y
B-24
7
H-9
5
0.5B
2B
2B
0.85B
0.85B
SEAT BELT SW
1
R-3
4
H-9
5
H-19
2
R-3
H-19
8
ELECTRICAL-BODY AND CHASSIS 8-235
TROUBLES HOOTING
SPEEDOMETER
1. Speedometer and odometer do not function
Checkpoint
Trouble Cause
Countermeasure
Replace the vehicle speed
sensor
Vehicle speed sensor
malfunction
NG
Repair an open circuit in the
circuit or a poor connection at
the connectors
Continuity between the vehicle
speed sensor and the meter,
or the fuse (LHD: CB-7
(15A)/RHD: CB-5 (15A)) and
the ground
Open circuit or poor connector
contact
Replace the speedometer
Use a meter tester to check
the speedometer function
Speedometer malfunction
NG
NG
OK
OK
Check the vehicle speed
sensor output
(4 pulses/1 rotation)
2. Speedometer needle fluctuates
(May be wide fluctuation)
Replace the vehicle speed
sensor, or repair an open
circuit in the circuit or a
connectors
Vehicle speed sensor
malfunction, or open circuit or
poor connector contact
NG
Replace the speedometer
Use a meter tester to check
the speedometer function
Speedometer malfunction
NG
OK
Check the speed sensor
output by using the
oscilloscope
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