Pinpoint Test M: The Cornering Lamp(s) Is/Are Inoperative

Turn Signal, Cornering and Hazard Lamps

Pinpoint Tests

Pinpoint Test M: The Cornering Lamp(s) Is/Are Inoperative

Refer to Wiring Diagram Set 91, Cornering Lamps for schematic and connector information. Diagrams By Number

Normal Operation

The cornering lamps are provided voltage when the parking lamps are on. The ground path is routed to the multifunction switch. When the multifunction switch is placed in the LH or RH TURN position, the multifunction switch completes the path to ground.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Multifunction switch



PINPOINT TEST M: THE CORNERING LAMP(S) IS/ARE INOPERATIVE

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

-------------------------------------------------
M1 CHECK THE HIGH BEAM OPERATION


- Ignition ON.
- Place the headlamp switch in the HEADLAMPS ON position.
- Place the multifunction switch in the HIGH BEAM position.
- Do the high beams operate correctly?

Yes
GO to M2.

No
REFER to Headlamps to continue diagnosis of the high beams. Testing and Inspection

-------------------------------------------------
M2 CHECK FOR VOLTAGE TO THE INOPERATIVE CORNERING LAMP


- Place the headlamp switch in the OFF position.
- Ignition OFF.
- Disconnect: Inoperative Cornering Lamp.
- Place the headlamp switch in the PARKING LAMPS ON position.
- Measure the voltage between the LH cornering lamp C1443-3, circuit 14 (BN), harness side and ground; or between the RH cornering lamp C1444-3, circuit 14 (BN), harness side and ground.




- Is the voltage greater than 10 volts?

Yes
GO to M3.

No
REPAIR circuit 14 (BN) for an open. TEST the system for normal operation.

-------------------------------------------------
M3 BYPASS THE MULTIFUNCTION SWITCH


- Place the headlamp switch in the OFF position.
- Connect: Inoperative Cornering Lamp.
- Disconnect: Multifunction Switch C202c.
- Connect a fused jumper wire between the multifunction switch C202a-1 (LH cornering lamp), circuit 380 (VT/YE), harness side and ground; or between the multifunction switch C202a-3 (RH cornering lamp), circuit 379 (BN/WH), harness side and ground.




- Place the headlamp switch in the PARKING LAMPS ON position.
- Is the cornering lamp illuminated?

Yes
INSTALL a new multifunction switch. REFER to Steering Column. TEST the system for normal operation.

No
REPAIR circuit 380 (VT/YE) (LH cornering lamp) or circuit 379 (BN/WH) (RH cornering lamp) for an open. TEST the system for normal operation.

-------------------------------------------------