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ELECTRICAL-BODY AND CHASSIS 8A-119
CIRCUIT DIAGRAM (LHD) EUROPE
RTW48AXF014301
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8A-120 ELECTRICAL-BODY AND CHASSIS
TROUBLE SHOOTING
HEADLIGHT
1. Both the headlights (high and low beam) do not light
Checkpoint Trouble Cause Countermeasure
Repair the wiring
Poor ground point contact
NG
Repair open circuit or
connector contact
Repair open circuit
Repair or replace the
combination switch
Voltage between 1
B-60 -
ground
Open circuit between lighting
relay and lighting switch
Open circuit between battery
positive terminal and lighting
relay
Combination switch continuity
Poor switch contact or sw
faulty
Voltage between
5
X-12 - ground and
2
X-12 - ground
Reinstall or replace the
lighting relay
Lighting relay
Poor relay contact or relay
faulty
NG NG NG NG OK
OK
OK OK
Ground point contact (C-36)
Repair open circuit
Wiring continuity between
B-60 - C-36
Open circuit
NG OK
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ELECTRICAL-BODY AND CHASSIS 8A-121
2. High or low beam does not light on both headlights
Checkpoint Trouble Cause Countermeasure
Repair or replace the
combination switch
Dimmerpassing switch
continuity
Poor switch contact or switch
faulty
NG
Repair open circuit or
connector contact
Voltage between
4
X-4 - ground and
4
B-60 - ground
Open circuit between
headlight and dimmerpassing
switch
NG OK
3. RH (or LH) high and low beam does not light
Replace the headlight bulb
Headlight connector continuity
Blown filament or air leakage
NG
Repair or replace the wire
and/or connector
Wiring continuity between
connector 3
C-19 - fuse No.
EB-7 or 3
C-26 fuse No.
EB-8
Open circuit and/or poor
connector contact
NG OK
Reinstall or replace fuse No.
EB-7 or No. EB-8
Fuse No. EB-7 (10A) or
No. EB-8 (10A) (Relay and
fuse box)
(No. EB-7 RH, No. EB-8: LH)
Poor installation or blown fuse
NG
OK
4. High or low beam does not light on one headlight (RH or LH)
Replace the headlight
assemblyHeadlight connector continuityBlown filament NG
Repair open circuit or
connector contactWiring continuity between
headlight and dimmerpassing
switchOpen circuit between
headlight and dimmerpassing
switch NG OK
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8A-122 ELECTRICAL-BODY AND CHASSIS
5. Headlight does not go out
Checkpoint Trouble Cause Countermeasure
Replace the lighting relay
Lighting relay continuity
between connector 1
X-12
- 2
X-12 (Should be no
continuity)
Relay point fused
NG
Replay the combination switch
Lighting switch continuity
between connector 3
B-60
-1
B-60 when switch is
OFF(Should be no continuity)
point fused or faulty
NG
OK OK
Repair or replace the
combination switch
Dimmerpassing switch con-
tinuity between connector
3
B-60 - 1 B-60 when switch
is not operating
(Should be no continuity)
Switch point fused or faulty
NG
Repair short circuit
between 4
X-12 - 3 B-60
and 4
X-1 - 2 B-60
Check if headlight goes out
when connector
C-30 is
disconnected
Short circuit
NG OK
6. Insufficient headlight brightness
Replace the headlight bulb
Headlight bulb
Bulb filament faulty
NG
Repair the wiring
Dimmerpassing switch
Wire continuity between con-
nector 1
B-60 - C-36
Poor ground point contact
NG OK
Clean the light lens
Headlight lens
Lens dirty
NG
OK
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ELECTRICAL-BODY AND CHASSIS 8A-123
7. Passing light does not function when dimmer switch is operated
Checkpoint Trouble Cause Countermeasure
Repair or replace the dimmer
switch
Dimmer switch
Poor switch point contact
NG
Repair open circuit between
4
X-12 - 3 B-60
Voltage between
3
B-60 - ground (Should
be battery voltage present)
Open circuit
NG OK
8. Headlight beam does not change when dimmer switch is operated
Repair or replace the dimmer
switchDimmer switchLoose beam lever or foreign
material in switch NG
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8A-124 ELECTRICAL-BODY AND CHASSIS
TAIL LIGHT, LICENSE PLATE LIGHT, CLEARANCE LIGHT
1. All lights do not light
Checkpoint Trouble Cause Countermeasure
Repair or replace the
combination switch
Lighting switch continuity
between connector
2
B-60 - 1 B-60
Poor switch point or connector
contact
NG
Reinstall or replace the tail
relay
Tail relay
Poor relay contact or relay
faulty
NG OK
Reinstall or replace the fuse
No. EB-6
Fuse No. EB-6 (10A, Relay
and fuse box)
Poor fuse contact or blown
NG
OK
2. Tail light does not light
Replace the bulb or repair
connector contact
Tail light bulb continuity
Bulb burned out or poor
connector contact
NG
Repair open circuit or
connector contact
Continuity between connector
3
F-5 - 4 F-5 (RH)
or 3
F-6 - 4 F-6 (LH)
Open circuit or poor connector
contact
NG OK
Page 783 of 4264
ELECTRICAL-BODY AND CHASSIS 8A-125
TAIL LIGHT-LH, LICENSE PLATE LIGHT, CLEARANCE LIGHT
1. All lights do not light (EC-LHD)
Checkpoint Trouble Cause Countermeasure
Repair or replace the
combination switch
Lighting switch continuity
between connector
2
B-60 - 1 B-60
Poor switch point or connector
contact
NG
Reinstall or replace the tail
relay
Tail relay
Poor relay contact or relay
faulty
NG OK
Reinstall or replace the fuse
No. EB-6
Fuse No. EB-6 (10A, Relay
and fuse box)
Poor fuse contact or blown
NG
OK
2. Tail light does not light
Replace the bulb or repair
connector contact
Tail light bulb continuity
Bulb burned out or poor
connector contact
NG
Repair open circuit or
connector contact
Continuity between connector
or 3
F-6 - 4 F-6 (LH)
Open circuit or poor connector
contact
NG OK
Page 784 of 4264
8A-126 ELECTRICAL-BODY AND CHASSIS
TAIL LIGHT-RH
1. All lights do not light (EC-LHD)
Checkpoint Trouble Cause Countermeasure
Repair or replace the
combination switch
Lighting switch continuity
between connector
2
B-60 - 1 B-60
Poor switch point or connector
contact
NG
Reinstall or replace the tail
relay
Tail relay
Poor relay contact or relay
faulty
NG OK
Reinstall or replace the fuse
No. EB-6
Fuse No. EB-5 (10A, Relay
and fuse box)
Poor fuse contact or blown
NG
OK
2. Tail light does not light
Replace the bulb or repair
connector contact
Tail light bulb continuity
Bulb burned out or poor
connector contact
NG
Repair open circuit or
connector contact
Continuity between connector
3
F-5 - 4 F-5 (RH)
Open circuit or poor connector
contact
NG OK