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Home >> Lincoln >> 2010 >> MKZ FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1112 (Instrument Cluster (Ic), Message Center, And Warning Chimes) >> Diagnostic Tests >> Instrument Cluster (IC) and Warning Chimes >> Pinpoint Tests >> Pinpoint Test N: The RH/LH Turn Indicator Is Never On >> Pinpoint Test N: The RH/LH Turn Indicator Is Never On

Pinpoint Test N: The RH/LH Turn Indicator Is Never On

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. N1 CHECK THE TURN SIGNAL LAMPS 
    • Key in ON position.
    • Operate the turn signal. Observe the exterior RH and LH turn lamps.
    • Do the RH and LH TURN lamps operate correctly? 
    1. YES  : If the RH TURN indicator is never on, go to  N2.

      If the LH TURN indicator is never on, go to  N3.

    2. NO  : REFER to EXTERIOR LIGHTING article.
  2. N2 CHECK CIRCUIT 2 (WH/LB) FOR VOLTAGE 
    • Key in OFF position.
    • Disconnect: Instrument Cluster (IC) C220a
    • Key in ON position.
    • Operate the RH TURN signal.
      • Fig 1: Checking Circuit 2 (WH/LB) For Voltage
      GF0012803Courtesy of FORD MOTOR CO.
    • Measure the voltage between instrument cluster (IC) C220a-18, circuit 2 (WH/LB), harness side and ground.
    • Does the voltage alternate between 0 volts and greater than 10 volts? 
    1. YES  : Go to  N4.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. N3 CHECK CIRCUIT 3 (LG/WH) FOR VOLTAGE 
    • Key in OFF position.
    • Disconnect: Instrument Cluster (IC) C220a
    • Key in ON position.
    • Operate the LH TURN signal.
      • Fig 2: Checking Circuit 3 (LG/WH) For Voltage
      GF0012804Courtesy of FORD MOTOR CO.
    • Measure the voltage between the instrument cluster (IC) C220a-4, circuit 3 (LG/WH), harness side and ground.
    • Does the voltage alternate between 0 volts and greater than 10 volts? 
    1. YES  : Go to  N4.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  4. N4 CHECK FOR CORRECT INSTRUMENT CLUSTER (IC) OPERATION 
    • Disconnect all the instrument cluster (IC) connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the instrument cluster (IC) 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 (IC). REFER to Instrument Cluster (IC) . 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.
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