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ELECTRICAL
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8.4.3 DIAGNOSTIC INFORMATION AND PROCEDURES FOR ALL LAMPS
CONDITION
POSSIBLE CAUSE
CORRECTION/REFERENCE ITEM
1.HEAD LAMP
Single head lamp
(
RH or LH
) not
working
1. Grounding point loose.
1.Tighten the grounding properly.
2. Head Lamp connector loose.
2.Fix the connector properly.
3. Fuse Blown
3.Check and replace fuse if blown.
Single head lamp
(
RH or LH
) not
working in high/low
beam properly
1. High/Low beam filament in the bulb
blown.
1. Replace bulb.
2. High/Low beam terminal (
Pink/Blue wire
)
has come out of the connector.
2. Insert the terminal into the
connector properly.
3. Fuse Blown
3.Check and replace fuse if blown.
Both lamps not
working in high/low
beam
1. Head lamp high/low beam fuse in engine
relay and fuse box loose/blown.
1. Fix the fuse in the base properly. If
blown, check for short in the circuit
and then replace the fuse.
2. Connectors at master light switch loose/
connector from main W/H to cockpit W/H
loose
2. Fix the connectors properly.
3. High
I
Low beam switch in master light
switch faulty.
3. Replace master light switch.
4. BCM connector loose.
4. Fix the connector properly.
5. Relay faulty.
5. Replace relay.
High beam does not
come on when flash
switch is activated
1. Connectors at combi switch loose.
1.Fix the connectors properly.
2. Flash switch faulty.
2.Replace combi switch.
3. High beam bulb blown.
3.Replace bulb.
4. High beam relay faulty.
4.Replace relay.
5. Check if High beam warning lamp
(telltale) in IPC is working with Flash or
High beam on
a. if it is working then point no 3 and 4
b. if not working then point no 1 and 2
and 5
5. Check wire back out near BCM
connector for pins (refer service
schematics)
2.FRONT TURN SIGNAL LAMPS
Front right/left signal
lamps not working
1. Grounding point loose.
1. Tighten the grounding properly.
2. Connector at the lamp loose
2. Fix the connector properly.
3. Bulb loose/fused.
3. Fix the bulb properly. Replace bulb
if blown.
4. BCM output or input wire is open
4. Repair the wiring harness.
5. Wiring harness short circuited
5. Repair the Wiring harness.
3.REVERSE LAMPS
Reverse lamp not
working
1. Grounding point loose.
1. Tighten the grounding properly.
2. Bulb loose/fused.
2. Fix the bulb properly. Replace bulb
if blown.
3. Harness Damage
3. Check connections from Chassis
Harness to Main wiring Harness to
Floor LH to Bumper Harness
4. Relay Faulty
4.Check Reverse lamp relay (for AT
vehicles only)