Using an ohmmeter, test for continuity (no resis-
tance) between the terminals of the switch as shown
in the Turn Signal and Hazard Switch Continuity
and Beam Select Switch Continuity tables.
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.
4. FAULTY CONTACT IN SWITCH.
1. REPLACE LAMP.
2. CHECK AND/OR REPLACE WIRING.
3. REPLACE WIRING HARNESS.
CHECK CONNECTIONS.
4. REPLACE MULTIFUNCTION SWITCH.
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 MULTIFUNCTION
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
CLOCKSPRING.
3. STICKING CANCELLING FINGER
ON MULTIFUNCTION SWITCH.
1. REPLACE MULTIFUNCTION
SWITCH.
2. REPLACE CLOCKSPRING.
3. REPLACE MULTIFUNCTION
SWITCH.
EXTERNAL LAMPS
OPERATE PROPERLY,
NO INDICATOR LAMP
OPERATION
1. FAULTY INDICATOR LAMP IN
INSTRUMENT CLUSTER.
1. REPLACE LAMP.
8J - 2
TURN SIGNAL AND FLASHERS
300M
DIAGNOSIS AND TESTING (Continued)