ELECTRICAL 54 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)
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