Trouble Diagnoses
SymptomPossible cause Repair order
Neither headlamp operates. 1. Lighting switch 1. Check lighting switch.
LH headlamp (low and high beam)
does not operate, but RH headlamp
(low and high beam) operates. 1. 15A fuse (No. 37)
2. Headlamp LH ground circuit
3. Lighting switch1. Check 15A fuse. Verify battery positive voltage is
present at lighting switch terminal 8.
2. Check headlamp LH ground circuit.
3. Check lighting switch.
RH headlamp (low and high beam)
does not operate, but LH headlamp
(low and high beam) does operate. 1. 15A fuse (No. 36)
2. Headlamp RH ground circuit
3. Lighting switch1. Check 15A fuse. Verify battery positive voltage is
present at lighting switch terminal 5.
2. Check headlamp RH ground circuit.
3. Check lighting switch.
LH high beam does not operate, but
LH low beam does operate. 1. Bulb
2. Open in LH high beam circuit
3. Lighting switch1. Check bulb.
2. Check the harness between lighting switch and
LH high beam for an open circuit.
3. Check lighting switch.
LH low beam does not operate, but
LH high beam does operate. 1. Bulb
2. Open in LH low beam circuit
3. Lighting switch1. Check bulb.
2. Check the harness between lighting switch and
LH low beam for an open circuit.
3. Check lighting switch.
RH high beam does not operate, but
RH low beam does operate. 1. Bulb
2. Open in RH high beam circuit
3. Lighting switch1. Check bulb.
2. Check the harness between lighting switch and
RH high beam for an open circuit.
3. Check lighting switch.
RH low beam does not operate, but
RH high beam does operate. 1. Bulb
2. Open in RH low beam circuit
3. Lighting switch1. Check bulb.
2. Check the harness between lighting switch and
RH low beam for an open circuit.
3. Check lighting switch.
High beam indicator does not work. 1. Bulb 2. Ground circuit
3. Open in high beam circuit1. Check bulb in combination meter.
2. Check harness between high beam indicator and
ground.
3. Check the harness between lighting switch and combination meter for an open circuit.
HEADLAMP Ð Without Daytime Light System Ð
EL-31
http://vnx.su/
Operation
After starting the engine with the lighting switch in the ªOFFº position, the headlamp low beam and parking,
tail, license and illumination lamps automatically turn on. Lighting switch operations other than the above are
the same as conventional light systems.
EngineWith engine stopped With engine running
Lighting switch OFF 1ST 2ND OFF 1ST 2ND ABCABCABCABCABCABC
Headlamp High beam X X qXX qq Xq XX qXX qq Xq
Low beam XXXXXXX qXqqq XXXX qX
Parking and tail lamp X X Xqqqqqqqqqqqqqqq
License and illumination lamp X X X qqqqqqqqqqqqqqq
q: Lamp ªONº
X: Lamp ªOFFº
: Added functions
System Description
The headlamp system on vehicles for North Europe contains a daytime light control unit. The unit activates
the following whenever the engine is running with the lighting switch in the OFF position:
I Low beam headlamps
I Parking, license, tail and illumination lamps
Power is supplied at all times
I through 10A fuse (No. 34, located in the fuse and fusible link box)
I to daytime light control unit terminal 1 and
I through 40A fusible link (No. C, located in the fusible link and fuse box)
I to ignition switch terminal 1.
Power is also supplied at all times
I through 15A fuse (No. 36, located in the fusible link and fuse box)
I to daytime light control unit terminal 5 and
I to lighting switch terminal 5.
Power is also supplied at all times
I through 15A fuse (No. 37, located in the fusible link and fuse box)
I to daytime light control unit terminal 7 and
I to lighting switch terminal 8.
With the ignition switch in the ON or START position, power is supplied
I through 10A fuse [No. 11, located in the fuse block (J/B)]
I to daytime light control unit terminal 12.
With the ignition switch in the START position, power is supplied
I to daytime light control unit terminal 8.
Ground is supplied to daytime light control unit terminal 10 through body grounds M33 and M754.
HEADLAMP OPERATION (DAYTIME LIGHT CANCEL OPERATION)
When the lighting switch is turned to the 1st or 2nd position, power is supplied
I through lighting switch terminal 12,
I to daytime light control unit terminal 3.
Then daytime light will be canceled. And the lighting system operation will be the same as no daytime light
system.
DAYTIME LIGHT OPERATION
With the engine running and the lighting switch in the OFF position, power is supplied
I from alternator terminal 1
I to daytime light control unit terminal 2,
I through daytime light control unit terminal 9
I to terminal 2 of headlamp LH,
I through daytime light control unit terminal 11
I to terminal 2 of headlamp RH and
I through daytime light control unit terminal 6
I to tail lamp and illumination.
Ground is supplied to terminal 3 of each headlamp through body grounds F36, F47 (LH) and M33, M754 (RH).
HEADLAMP Ð Daytime Light System Ð
EL-32
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