Mitsubishi Electric 55624R(S)-MF Service Manual page 45

OPERATION
Conditions for switch-ON of headlight relay
Ignition switch
"ACC" or "ON"
"ACC" or "ON"
<Low-beam operation>
lighting switch is set to the "HEAD" position.
The low beam of the headlights will illuminate
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when, in this condition, the dimmer/passing
switch is set to the "LO" position.
<High-beam operation>
The headlight relay is switched ON when the
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lighting switch is set to the "HEAD" position.
The high beam of the headlights will illuminate
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when, in this condition, the dimmer/passing
switch is set to the "HI" position.
<High-beam indicator light>
This indicator illuminates during use of the high
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beam of the headlights, and when the passing
signal (high beam) is activated, thus indicating
that the headlights' high beam is illuminated.
LIGHTING SYSTEM
Lighting switch
"HEAD"
4. One headlight doesn't illuminate.
5. Can't switch from low to high beam or vice-
6. The high beam indicator light doesn't illuminate.
TSB Revision
Dimmer-passing switch
HINTS
TROUBLESHOOTING
1. Headlights don't come on.
1) But the tail lights do illuminate.
Check the headlight relay.
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Check the lighting switch.
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2) The tail lights also don't illuminate.
Check the sub-fusible link No.@.
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2. The low beam at both sides doesn't illuminate.
Check the ground.
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3. The upper beam at both sides doesn't illumi-
nate.
1) The passing signal functions OK.
Check the "HI" contacts of the dimmer
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switch.
2) The passing signal doesn't function.
Check the dimmer switch.
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Check the bulb.
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versa.
Check the dimmer switch
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1) The high beam of the headlights is normal.
Check dedicated fuse NO.@.
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Check the bulb.
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NOTE
(1) For information concerning the headlight
relay and theft-alarm headlight relay, refer to
(2) For vehicles equipped with the theft-alarm
system, refer to P.54-165.
Headlight relay
O N
ON