Circuit ISUZU KB P190 2007 Workshop Repair Manual

ELECTRICAL-BODY AND CHASSIS 8A-221

CIRCUIT DIAGRAM 4JJ1-TC / 4JK1-TC (RHD) Sheet 1/2


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8A-222 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM 4JJ1-TC / 4JK1-TC (RHD) Sheet 2/2



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ELECTRICAL-BODY AND CHASSIS 8A-223

CIRCUIT DIAGRAM 4JJ1-TC / 4JK1-TC (LHD) Sheet 1/2


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8A-224 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM 4JJ1-TC / 4JK1-TC (LHD) Sheet 2/2



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ELECTRICAL-BODY AND CHASSIS 8A-225

CIRCUIT DIAGRAM 4JA1T (L) Sheet 1/3







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8A-226 ELECTRICAL-BODY AND CHASSIS

CIRCUIT DIAGRAM 4JA1T (L) Sheet 2/3






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ELECTRICAL-BODY AND CHASSIS 8A-227

CIRCUIT DIAGRAM 4JA1T (L) Sheet 3/3






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8A-228 ELECTRICAL-BODY AND CHASSIS
TROUBLESHOOTING
STOPLIGHT AND HIGH MOUNTED STOPLIGHT
1. One side of stoplight does not light

Checkpoint Trouble Cause Countermeasure


Replace the bulb or repair
connector contact

Burned out bulb or poor
connector contact

NG


Repair open circuit or
connector contact


Repair open circuit or
connector contact


Open circuit or poor connector
contact


Continuity between
9
H9 - 2 F6 (LH) (or
2
F5 (RH))


Open circuit or poor connector
contact

Continuity between

C109 - 4 F6 (LH) (or
4
F5 (RH)) NG
NG
OK
OK

Stoplight bulb continuity




2. Both sides of stoplight do not light



Adjust the switch installation
position

Stop light switch (or brake
switch) function

Incorrect the switch installation
or adjustment

NG

Repair open circuit or
connector contact
Voltage between 2 F6
ground or 2
F5 - ground
with brake pedal depressed
(Should be battery voltage
present)
Open circuit or poor connector
contact between stoplight
switch (or brake switch) and
stoplight
NG
OK

Reinstall or replace fuse No.
SBF9 (50A or 60A)
or 1
C108 -
4
C107
Fuse No. C15 (15A)


Fuse No. SBF-9 (50A, Fuse
and Relay box)
or 1
C108 -
4
C107
Fuse No. C15 (15A)


Poor fuse contact or blown

NG
OK


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ELECTRICAL-BODY AND CHASSIS 8A-229

3. High mounted stoplight does not light

Checkpoint Trouble Cause Countermeasure



Repair or replace the high
mounted stoplight

Continuity between 3
L5 -
1
L5


High mounted stoplight
malfunction

NG
Repair an open circuit or
connector contact between
3
L5 - 13 H18 (RHD) or
10
H48 (LHD)
Voltage between 1
L5 -
ground with brake pedal
depressed
(Should be battery voltage
present)
Open circuit or poor connector
contact

NG
OK

Repair grounding point contact

C2


Grounding point
C2


Poor grounding point contact

NG
OK




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8A-230 ELECTRICAL-BODY AND CHASSIS
TURN SIGNAL LIGHT AND HAZARD WARNING LIGHT
1. Turn signal light does not light on both sides (RH and LH)

Checkpoint Trouble Cause Countermeasure



Replace the flasher unit

Flasher unit malfunction

NG

Repair or replace the
combination switch
Turn signal switch continuity
between connector
5
B60 - 6 B60 and
5
B60 - 7 B60 when
turn signal switch operates
Short circuit between
connector 3
B61 - 1 B61
when turn signal switch
operates with starter switch
in “ON” position (Turn
signal light should be ON)

Poor switch point contact or
faulty switch

NG
OK

Reinstall or replace fuse No.
EB16 (10A)

Fuse No. EB16 (10A, Fuse
box)

Poor fuse contact or blown
fuse

NG
OK
OK

Repair open circuit or
connector contact
Continuity between
connector 2
B61 -ground
(Should be continuity)


Open circuit or poor connector
contact

NG




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