Pinpoint Test T: The Turn/Hazard Indicator Is Never/Always On

T1 CHECK THE TURN SIGNAL AND HAZARD LAMPS OPERATION
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- Key in ON position.
- Operate the left and right turn signals.
- Operate the hazard lamps.
- Do the turn signals and hazard lamps operate correctly?
1. Yes: GO to T2.
2. No: REFER to EXTERIOR LIGHTING .
T2 CHECK THE CIRCUIT IN QUESTION - CIRCUIT 2 (WH/LB) (RH) OR CIRCUIT 3 (LG/WH) (LH)
- Key in OFF position.
- Disconnect: Instrument Cluster C220a (RH) or C220b (LH).
- Key in ON position.
- Measure the voltage between the instrument cluster C220a pin 3, circuit 3 (LG/WH), harness side and ground, while the steering column multifunction switch is placed in the left turn position (LH); or between the instrument cluster C220b pin 3, circuit 2 (WH/LB), harness side and ground, while the steering column multifunction switch is placed in the right turn position (RH).
  
  Fig 1: Checking Circuit In Question - Circuit 2 (WH/LB) (RH) Or Circuit 3 (LG/WH) (LH)
  Courtesy of FORD MOTOR CO.
- Does the voltage alternate between 0 volts and 10 volts with the turn signal on?
1. Yes: GO to T3.
2. No: REPAIR the circuit(s) in question. TEST the system for normal operation.
T3 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
- Disconnect all the instrument cluster connectors.
- Check for:
  - corrosion
  - pushed-out pins
- Connect all the 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 INSTRUMENT CLUSTER . TEST the system for normal operation.
2. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.