Pinpoint Test P: The Turn Signal Lamps Are Inoperative
WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
- P1 CHECK THE HIGH BEAM OPERATION
- Key in ON position.
- Turn the headlamp switch to the headlamps ON position.
- Place the multifunction switch in the high beam position.
- Do the high beams operate correctly?
- Yes : TURN the headlamp switch OFF. GO to P2.
- No : Go To PINPOINT TEST B: THE HIGH BEAMS ARE INOPERATIVE to diagnose the high beams.
- P2 CHECK THE MULTIFUNCTION SWITCH OUTPUT
- Key in OFF position.
- Connect the diagnostic tool.
- Key in ON position.
- Monitor the instrument cluster turn signal status PID while
- placing the multifunction switch in the RH and then LH turn positions.
- Does the PID match with the multifunction switch positions?
- Yes : GO to P6.
- No : GO to P3.
- P3 CHECK THE MULTIFUNCTION SWITCH
- Key in OFF position.
- Disconnect: Multifunction Switch C202.
- Carry out the multifunction switch component test.
Refer to COMPONENT TESTING .
- Is the multifunction switch OK?
- Yes : GO to P4.
- No : INSTALL a new multifunction switch. Refer to STEERING SYSTEM . TEST the system for normal operation.
- P4 CHECK CIRCUIT 8 -LG43 (WH/VT) FOR AN OPEN
- Disconnect: Instrument Cluster C220b.
- Measure the resistance between the instrument cluster C220b-20, circuit 8-LG43 (WH/VT), harness side and the multifunction switch C202-7, circuit 8-LG43 (WH/VT), harness side.
- Is the resistance less than 5 ohms?
- Yes : GO to P5.
- No : REPAIR the circuit. TEST the system for normal operation.
- P5 CHECK CIRCUIT 8 -LG43 (WH/VT) FOR SHORT TO POWER
- Key in ON position.
- Measure the voltage between the instrument cluster C220b-20, circuit 8-LG43 (WH/VT), harness side and ground.
- Is any voltage present?
- Yes : GO to P6.
- No : REPAIR the circuit. TEST the system for normal operation.
- P6 CHECK FOR INSTRUMENT CLUSTER OPERATION
- Key in OFF position.
- Disconnect all instrument cluster connectors.
- Check for:
- corrosion
- pushed-out pins
- Connect all instrument cluster 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 instrument cluster. Refer to INFORMATION, GAUGES & WARNING DEVICES . TEST the system for normal operation.
- No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. REPEAT the self-test.