Pinpoint Test L: One Turn Signal/Hazard Lamp Is Inoperative
- L1 CHECK THE STOPLAMPS
- Key in ON position.
- Apply and release the brake pedal while observing the rear lamps.
- Do the stoplamps operate correctly?
- L2 CHECK THE TURN LAMPS GROUND CIRCUITRY
- Key in OFF position.
- Disconnect: Inoperative Turn Lamp.
- Measure the resistance between the LH front turn lamp C1023-1, circuit 31-LG11 (BK), harness side and ground; or between the RH front turn lamp C1043-1, circuit 31-LG18 (BK), harness side and ground.
- Is the resistance less than 5 ohms?
- Yes : GO to L3.
- No : REPAIR the turn lamp ground circuit. TEST the system for normal operation.
- L3 CHECK CIRCUITS 49S-LG11 (BU/OG) AND 49S-LG18 (BU) FOR AN OPEN
- Disconnect: GEM C201c.
- Measure the resistance between the GEM connector, harness side and the inoperative turn lamp connector, harness side; and between the GEM connector, harness side and ground as follows:GEM CONNECTOR-PIN, INOPERATIVE LAMP CONNECTOR-PIN AND CIRCUIT REFERENCE
GEM Connector-Pin Circuit Inoperative Lamp Connector-Pin Circuit C201c-4 49S-LG5 (BU/WH) LH front C1023-3 49S-LG11 (BU/OG) C201c-3 49S-LG4 (BU/RD) RH front C1043-3 49S-LG18 (BU) - Is the resistance less than 5 ohms between the GEM and the turn lamp; and greater than 10,000 ohms between the GEM and ground?
- Yes : GO to L4.
- No : REPAIR the circuit(s) in question. TEST the system for normal operation.
- L4 CHECK FOR CORRECT GEM OPERATION
- Disconnect the GEM connectors.
- Check for:
- Corrosion
- Pushed-out pins
- Connect the GEM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new GEM. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. TEST the system for normal operation.