2007 ISUZU KB P190 fuse

ELECTRICAL-BODY AND CHASSIS 8A-231
2. Turn signal light does not light on one side (RH or LH)

Checkpoint Trouble Cause Countermeasure



Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG
(LH)
Continuity between
1
C25 - 6 B60 (FRT),
1
C35 - 6 B60 (SIDE)
1
F6 - 6 B60 (RR)
(RH)
Continuity between
1
C22 - 7 B60 (FRT),
1
C1 - 7 B60 (SIDE)
1
F5 - 7 B60 (RR)

Repair or replace the
combination switch

Turn signal switch continuity

Poor switch point contact or
faulty switch

NG
OK
OK

Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG



3. Hazard warning light does not light



Repair or replace the hazard
SW .

Hazard SW . malfunction

NG
Voltage between 5
B16 -
ground (Should be battery
voltage present)

Hazard SW . continuity


Reinstall or replace the fuse
No. EB-16 (10A)

Fuse No. EB16 (10A, Relay
and fuse box)

Poor fuse contact or blown
fuse

NG
OK
OK

Repair open circuit or
connector contact
Open circuit or poor
connector contact between
fuse No. EB16 (10A) -
5
B16
NG



4. Flashing rate too fast (One side)

Replace the bulb or repair
open circuitInspect bulbBurned out bulb
NG


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8A-232 ELECTRICAL-BODY AND CHASSIS
BACKUP LIGHT
1. Backup light does not light on one side (RH or LH)

Checkpoint Trouble Cause Countermeasure

Repair grounding point contactPoor ground contact
NGGrounding point
Replace the bulb or repair
connector contactBackup light bulb continuityBurned out bulb or poor
connector contact
NG
OK



2. Backup light does not light on both sides



Repair or replace the switch

Poor switch point contact of
faulty switch

NG
Voltage between 5 F6
(5
F5 ) - ground with
starter switch ON and shift
lev er into rev erse position
(Should be battery v oltage
present)

Back up light switch (mode
switch) continuity


Reinstall or replace fuse No.
C10 (15A)

Fuse No. C10 (15A, Fuse
box)

Poor fuse contact or blown
fuse

NG
OK
OK

Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG



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ELECTRICAL-BODY AND CHASSIS 8A-233
HORN
1. Both sides of horn do not sound

Checkpoint Trouble Cause Countermeasure



Repair the grounding point

Poor ground contact

NG

Horn relay


Grounding point


Reinstall or replace fuse No.
EB15 (10A)

Fuse No EB15 (10A, Relay
and fuse box)

Poor fuse contact or blown
fuse

NG
OK
OK

Reinstall or replace the horn
relay

Poor relay contact or faulty
horn relay

NG
Voltage between connector
3
X3 - ground or 1 X3
- ground (Should be battery
v oltage present) OK

Repair open circuit or
reconnect the connector
Open circuit or poor connector
contact between fuse No.
EB15 (10A) and horn relay

NG

Remov e steering pad and
steering wheel
OK

Horn switch continuity
OK
Repair or replace the horn
switch

Poor switch point contact or
faulty switch

NG
Continuity between
5
X3 - 10 B60
2
X3 - 1 C20 (1 C21 )
OK

Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG



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ELECTRICAL-BODY AND CHASSIS 8A-273
TROUBLESHOOTING
WINDSHIELD WIPER
1. Wiper dose not operate at any switch position

Checkpoint Trouble Cause Countermeasure


Reinstall or replace the fuse
No. C9 (20A)

Poor fuse contact or blown

NG

Repair open circuit or
connector contact

1. W iper motor function when
connecting the motor
connector 3
C4 to the
battery (+) terminal, and 1
C4 to the (-) terminal
(Should the wiper motor
rotate at a low speed)
2. W iper motor function when connecting the motor
connector 2
C4 to the
battery (+) terminal, 1
C4 to the (-) terminal
(Should the wiper motor
rotate at a high speed)
Voltage between 3 B59 and
the ground (Should be battery
v oltage present)

Open circuit or poor connector
contact


Replace the wiper & washer
SW .

Continuity in the wiper &
washer SW .

SW . malfunction

NG
NG
OK
OK

Fuse No. C9 (20A)


Repair grounding point
contact
Grounding point
C2 (LHD),
C
C36 (RHD)


Poor grounding point contact

NG
OK
OK

Replace the wiper motor

W iper motor malfunction

NG

Repair open circuit or
connector contact

Continuity between 1
C4
and
C36 (RHD), C2 (LHD)


Open circuit or poor connector
contact

NG
OK



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8A-276 ELECTRICAL-BODY AND CHASSIS
6. Auto-stop function of the wiper motor does not operate

Checkpoint Trouble Cause Countermeasure


Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG

Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG Continuity between the
intermittent relay harness side
connector 6
C3 and the
wiper motor harness side
connector 6
C4

Replace the intermittent relay

Relay malfunction

NG
Intermittent relay function


W iper motor function
1. Disconnect the wiper motor connector
2. Connect the motor connector 5
B59 to the
battery (+) terminal and
1
C4 to the (-) terminal,
and then change the
connection of the battery (+)
terminal to the connector
4
C4 while the motor
rotating at a low speed
3. Check to see if the wiper motor stops at the auto stop
position when connecting
the connector terminals
3
C4 and 1 C4 in this
condition
Continuity between the wiper
& washer SW . connector
terminals 5
B59 and 6 B59
at the “OFF” position
OK

Replace the wiper motor

W iper motor malfunction

NG
Repair an open circuit or a
poor connection of the
connectors between the fuse
No. C9 (20A) and 4
C4
Voltage between the wiper
motor harness side connector
terminal 4
C4 and the
ground (Should be battery
v oltage present)

Open circuit or poor connector
contact

NG
OK
OK
OK



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ELECTRICAL-BODY AND CHASSIS 8A-277
WASHER
1. Washer motor does not operate

Checkpoint Trouble Cause Countermeasure


Reinstall or replace the fuse
No. C9 (20A)

Poor fuse contact or blown

NG
Repair or an open circuit or a
poor connection of the
connectors between 2
C17
and 1
B59

Open circuit or poor connector
contact

NG Voltage between the washer
motor harness side connector
terminal 2
C17 and the
ground when the washer
button is depressed (Should
be battery v oltage present)

Repair grounding point
C36
contact

Poor grounding point contact

NG
Grounding point
C36


Replace the washer motor

Motor malfunction

NG
W asher motor function when
connecting the motor side
connector 2
C17 to the
battery (+) terminal, and the
connector 1
C17 to the (-)
terminal (Should the washer
motor rotate) OK

Repair open circuit or
connector contact

Open circuit or poor connector
contact

NG
Continuity between 1
C17
and
C36
OK

Continuity between the wiper
& washer SW . side connector
terminals 1
B59 and 7 B59
when the washer button is
depressed

Fuse No. C9 (20A)

OK

Replace the wiper & washer
SW .

SW . malfunction

NG
Repair or an open circuit or a
poor connection of the
connectors between the fuse
No. C-9 (20A) and 7
B59
Voltage between the wiper &
washer SW . harness side
connector terminal 7
B59
and the ground (Should be
battery v oltage preset)

Open circuit or poor connector
contact

NG
OK
OK
OK


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ELECTRICAL-BODY AND CHASSIS 8A-283
Windshield Washer Spray
Be sure that the engine hood is completely closed before
checking the windshield washer spray adjustment.
W indshield W asher Spray Position: Refer to the illustration.

RTW 38DSF000201



Connector
Be absolutely sure that the wiper motor connector is securely
connected.
This will prevent a poor contact and an open circuit.



Note:
Windshield wiper arm and blade assembly configurations
are different for the right-hand and left-hand side of the
vehicle.
Be careful not to confuse the right-hand and left-hand side
assemblies.



This illustration is based on RHD model
WASHER TANK MOTOR
Removal
1. Remove the head light.
• Refer to the head light in this manual.
2. Remove the inner liner.
3. Pull out the clip washer filler.
4. Remove the washer tank nuts.


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ELECTRICAL-BODY AND CHASSIS 8A-343
TROUBLESHOOTING
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 C14 (10A) and the
ground

Open circuit or poor connector
contact


Replace the case baseboard
assy

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 pointer 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 case baseboard
assy

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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