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(HEADLIGHT SYSTEM)
Description ± Headlight System
The component parts of this system and their function are described in the \
following table.
Parts NameFunction
Light Control SwitchGrounds current from the headlight control relay and taillight control r\
elay via the
integration relay, switching each relay and supplying current to the appropriate bulbs
accordance with the switch position.
Dimmer SwitchGrounds current from the dimmer relay in accordance with the switch posi\
tion, turning
on the ºLO±Beamº or ºHI Beamº lights. In the case of º\
FLASHº it turns the heading
control relay and turns on the ºHI Beamº lights.
Headlight Control
RelayTurned on by signals from the light control switch, dimmer switch and run\
ning light
relay and supplies current to each bulb or headlight dimmer relay.
Headlight
Dimmer RelayReceives current from the headlight control relay, which switches the relay according
to the position of the dimmer switch and sends current to the headlight \
ºLO±Beamº
or ºHI Beamº.
Integration RelayCarries out ºLight Auto Turn±offº of the headlights and taillights and cuts off current to
the light control switch in accordance with signals from the GAUGE fuse \
and courtesy
switch.
Door Courtesy
Switch/Driver 'sDetects when the door is open and sends the appropriate signals to integ\
ration relay.
(Light Auto Turn±Off System)
Parking Brake
Switch
(CANADA)Detects when the parking brake lever is released and sends the appropria\
te signals to
daytime running light relay.
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System Description ± Headlights
DAYTIME RUNNING LIGHT SYSTEM
The Daytime Running Light (DRL) system is activated when engine is started (However, if the parking brake
lever is engaged when the engine is started, the DRL will not light up a\
fter the engine has started. Once the
parking brake is released, the DRL will then light up and will remain on regardless of operation of\
the parking
brake lever).
The DRL remain on until the ignition switch is turned off.
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Operation example (Current flow table)
1. Daytime Running Light Lights Up
SwitchPosition
Ignition switchON (Engine running)
Light Control SwitchOFF
Headlight Dimmer SwitchLO or HI
Condition: Battery Voltage " (3) , (14)
2. Taillight Lights Up
SwitchPosition
Ignition SwitchOFF or ON
Light Control SwitchTAIL
Headlight Dimmer SwitchLO or HI
Condition: Battery Voltage " (3)
Continuity (16) " (17) " Ground
3. Headlight LO±Beam Lights Up
SwitchPosition
Ignition SwitchOFF or ON
Light Control SwitchHEAD
Headlight Dimmer SwitchLO
Condition: Battery Voltage " (3)
Continuity (16) " (17) " Ground
(18) " (17) " Ground
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4. Headlight HI±Beam Lights Up
SwitchPosition
Ignition SwitchOFF or ON
Light Control SwitchHEAD
Headlight Dimmer SwitchHI
Condition: Battery Voltage " (3)
Continuity (20) " (21) " Ground
(18) " (17) " Ground
(16) " (17) " Ground
5. Headlight Flash
SwitchPosition
Ignition SwitchOFF or ON
Light Control SwitchOFF or TAIL or HEAD
Headlight Dimmer SwitchFLASH
Condition: Battery Voltage " (3)
Continuity (19) " (21) " Ground
(20) " (21) " Ground
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Parts Location ± Headlight System
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Wiring Diagram ± Headlight System
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BODY ELECTRICAL SYSTEM Lighting System
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Wiring Diagram (Cont'd)
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Connector Diagrams ± Headlights
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BODY ELECTRICAL SYSTEM Lighting System
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