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Combination Flasher Diagnosis: Notes

COMBINATION FLASHER DIAGNOSIS

CONDITION POSSIBLE CAUSES CORRECTION
SYSTEM DOES NOT FLASH ON ONE SIDE, INDICATOR LAMP FLASHES AT DOUBLE NORMAL RATE.
  1. FAULTY EXTERNAL LAMP.
  2. POOR GROUND AT LAMP.
  3. OPEN CIRCUIT IN WIRING TO EXTERNAL LAMP.
  1. REPLACE LAMP.
  2. CHECK AND/OR REPLACE WIRING.
  3. REPLACE WIRING HARNESS. CHECK CONNECTIONS.
INDICATOR LAMP FLASHES AT DOUBLE NORMAL RATE. EXTERNAL LAMP-DIM AND FLASHES RAPIDLY OR NO FLASH.
  1. LOOSE OR CORRODED EXTERNAL LAMP CONNECTION.
  2. POOR GROUND CIRCUIT AT EXTERNAL LAMP.
  1. REPLACE SOCKET/HARNESS.
  2. REPLACE WIRING HARNESS. CHECK CONNECTORS.
HAZARD WARNING MALFUNCTION/SYSTEM DOES NOT FLASH.
  1. FAULTY FUSE.
  2. FAULTY FLASHER UNIT.
  3. OPEN CIRCUIT IN FEED WIRE TO SWITCH.
  4. FAULTY CONTACT IN SWITCH.
  5. OPEN OR GROUNDED CIRCUIT IN WIRING TO EXTERNAL LAMPS.
  1. REPLACE FUSE.
  2. REPLACE FLASHER UNIT.
  3. REPLACE WIRING HARNESS. CHECK CONNECTORS.
  4. REPLACE MULTI-FUNCTION SWITCH.
  5. REPLACE WIRING HARNESS.
INDICATOR LAMP FLASHES AT DOUBLE NORMAL RATE. EXTERNAL LAMP DOES NOT LIGHT.
  1. OPEN CIRCUIT IN WIRE TO EXTERNAL LAMP.
  2. BURNED OUT LAMP.
  1. REPLACE WIRING HARNESS.
  2. REPLACE LAMP.
SYSTEM DOES NOT FLASH ON EITHER SIDE.
  1. FAULTY FUSE.
  2. FAULTY FLASHER UNIT.
  3. LOOSE BULKHEAD CONNECTOR.
  4. LOOSE OR FAULTY REAR WIRING HARNESS OR TERMINALS.
  5. OPEN CIRCUIT TO FLASHER UNIT.
  6. OPEN CIRCUIT IN FEED WIRE TO TURN SIGNAL SWITCH.
  7. FAULTY SWITCH CONNECTION IN SWITCH.
  8. OPEN OR GROUNDED CIRCUIT IN WIRING TO EXTERNAL LAMPS.
  9. BURNED OUT LAMPS.
  1. REPLACE FUSE.
  2. REPLACE FLASHER UNIT.
  3. TIGHTEN CONNECTOR.
  4. REPLACE WIRING HARNESS.
  5. CHECK CONNECTORS, REPLACE WIRING HARNESS.
  6. CHECK CONNECTORS, REPLACE WIRING HARNESS.
  7. REPLACE SWITCH.
  8. REPLACE WIRING HARNESS.
  9. REPLACE LAMPS.
SYSTEM DOES NOT CANCEL AFTER COMPLETION OF TURN.
  1. BROKEN CANCELLING FINGER ON SWITCH.
  2. BROKEN OR MISSING CANCELLING CAM ON CLOCK SPRING.
  3. STICKING CANCELLING FINGER ON MULTIFUNCTION SWITCH.
  1. REPLACE MULTI-FUNCTION SWITCH.
  2. REPLACE CLOCK SPRING.
  3. REPLACE MULTI-FUNCTION SWITCH.
EXTERNAL LAMPS OPERATE PROPERLY, NO INDICATOR LAMP OPERATION.
  1. FAULTY INDICATOR LAMP IN INSTRUMENT CLUSTER.
  1. REPLACE LAMP.
Fig 1: Turn Signal And Hazard Switch Connector Pin Call Out
G03498119Courtesy of DAIMLERCHRYSLER CORP.
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