TURN SIGNAL AND HAZARD WARNING FLASHER DIAGNOSIS
CONDITION POSSIBLE CAUSES CORRECTION
TURN SIGNAL FLASHES AT TWICE THE NORMAL RATE. (1) FAULTY EXTERNAL LAMP.
(2) POOR GROUND AT LAMP.
(3) OPEN CIRCUIT IN WIRING TO EXTERNAL LAMP.
(4) FAULTY CONTACT IN SWITCH. (1) REPLACE LAMP.
(2) CHECK AND/OR REPAIR WIRING
(3) REPAIR WIRING HARNESS. CHECK CONNECTORS.
(4) REPLACE MULTI FUNCTION SWITCH.
INDICATOR LAMP ILLUMINATED BRIGHTLY, EXTERNAL LAMP GLOWS DIMLY AT A RAPID RATE. (1) LOOSE OR CORRODED EXTERNAL LAMP CONNECTION.
(2) POOR GROUND CIRCUIT AT EXTERNAL LAMP.
(3) OPEN INSTRUMENT CLUSTER. (1) REPLACE SOCKET CONNECTION.
(2) REPAIR WIRING HARNESS. CHECK CONNECTORS.
(3) REPLACE INSTRUMENT CLUSTER.
HAZARD WARNING SYSTEM DOES NOT FLASH. (1) FAULTY FUSE.
(2) FAULTY FLASHER.
(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.
(3) REPAIR WIRING HARNESS, CHECK CONNECTORS.
(4) REPLACE MULTI FUNCTION SWITCH.
(5) REPAIR WIRING HARNESS.
INDICATOR LAMP ILLUMINATES BRIGHTLY, EXTERNAL LAMP DOES NOT LIGHT. (1) OPEN CIRCUIT IN WIRE TO EXTERNAL LAMP.
(2) BURNED OUT LAMP. (1) REPAIR 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. (1) REPLACE FUSE.
(2) REPLACE FLASHER.
(3) TIGHTEN CONNECTOR.
(4) REPAIR WIRING HARNESS
(5) CHECK CONNECTORS, REPAIR WIRING HARNESS.
(6) CHECK CONNECTORS, REPAIR WIRING HARNESS.
(7) REPLACE MULTI FUNCTION SWITCH.
(8) REPAIR WIRING HARNESS.
SYSTEM DOES NOT CANCEL AFTER COMPLETION OF THE TURN. (1) BROKEN CANCELLING FINGER ON SWITCH.
(2) BROKEN OR MISSING CANCELLING CAM ON CLOCKSPRING. (1) REPLACE MULTI FUNCTION SWITCH.
(2) REPLACE CLOCKSPRING.
EXTERNAL LAMPS OPERATE PROPERLY, NO INDICATOR LAMP OPERATION. (1) FAULTY INDICATOR LAMP IN INSTRUMENT CLUSTER.
(2) OPEN CIRCUIT OR WIRING. (1) REPLACE LAMP.
(2) REPAIR WIRING HARNESS.
To test the switch, first disconnect the negative battery cable, then remove the upper and lower column shrouds to gain access to the switch connector. Remove switch connector. Using an ohmmeter, test for continuity (no resistance) between the terminals of the switch as shown in the Multi-Function Switch Continuity Test Chart for diagnosis. Refer to Combination Flasher Connector (A) , Multi-Function Switch Connector (B) , and Windshield Wiper/Washer Switch Connector (C) for connector terminal locations.