Pinpoint Test S: The Hazard Lamps Are Always On: Overview

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.

S1 CHECK THE MULTIFUNCTION SWITCH
- Key in OFF position.
- Disconnect: Multifunction Switch C202.
- Carry out the multifunction switch component test. COMPONENT TESTING .
- Is the multifunction switch OK?
1. Yes : GO to S2.
2. No : INSTALL a new multifunction switch. Refer to STEERING SYSTEM CLEAR the DTCs. TEST the system for normal operation.
S2 CHECK CIRCUIT 8 -LG43 (WH/VT) FOR SHORT TO GROUND
- Disconnect: Instrument Cluster C220b.
- Measure the resistance between the multifunction switch C202-7, circuit 8-LG43 (WH/VT), harness side and ground.
  
  Fig 1: Measuring Resistance Between The Multifunction Switch C202-7, Circuit 8-Lg43 (WH/VT), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
1. Yes : REPAIR the circuit. CLEAR the DTCs. TEST the system for normal operation.
2. No : GO to S3.
S3 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?
1. Yes : INSTALL a new instrument cluster. Refer to INFORMATION, GAUGES & WARNING DEVICES . TEST the system for normal operation.
2. No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. REPEAT the self-test.