LIGHTING SYSTEM
Troubleshooting
OPERATION
Conditions for switch-ON of headlight relay
Ignition switch
Lighting switch
“ACC” or “ON”
“HEAD”
“ACC” or “ON”
Dimmer-passing switch
PASS
Headlight relay
O N
ON
<Low-beam operation>
The headlight relay is switched ON when the
lighting switch is set to the “HEAD” position.
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The low beam of the headlights will illuminate
when, in this condition, the dimmer/passing
switch is set to the “LO” position.
<High-beam operation>
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The headlight relay is switched ON when the
lighting switch is set to the “HEAD” position.
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The high beam of the headlights will illuminate
when, in this condition, the dimmer/passing
switch is set to the “HI” position.
<High-beam indicator light>
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This indicator illuminates during use of the high
beam of the headlights, and when the passing
signal (high beam) is activated, thus indicating
that the headlights’ high beam is illuminated.
TROUBLESHOOTING
HINTS
1. Headlights don’t come on.
1) But the tail lights do illuminate.
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Check the headlight relay.
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Check the lighting switch.
2) The tail lights also don’t illuminate.
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Check the sub-fusible link
2. The low beam at both sides doesn’t illuminate.
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Check the ground.
3. The upper beam at both sides doesn’t illumi-
nate.
1) The passing signal functions OK.
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Check the “HI” contacts of the dimmer
switch.
2) The passing signal doesn’t function.
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Check the dimmer switch.
4. One headlight doesn’t illuminate.
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Check the bulb.
5. Can’t switch from low to high beam or
versa.
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Check the dimmer switch
6.
The high beam indicator light doesn’t illuminate.
1) The high beam of the headlights is normal.
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Check dedicated fuse
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Check the bulb.
NOTE
(1) For information concerning the headlight
relay and theft-alarm headlight relay, refer to
98.
(2) For vehicles equipped with the theft-alarm
system, refer to
TSB Revision