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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 433 (Exterior Lighting) >> Diagnosis And Testing >> Turn Signal and Hazard Lamps >> Symptom Chart >> PINPOINT TEST Q: One Turn Signal Lamp Is Inoperative >> Pinpoint Test Q: One Turn Signal Lamp Is Inoperative

Pinpoint Test Q: One Turn Signal Lamp Is 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.
  1. Q1 CHECK THE POWER SUPPLY TO THE TURN SIGNAL LAMP 
    • Key in OFF position.
    • Disconnect: Inoperative Turn Signal Lamp.
    • Key in ON position.
    • Measure the voltage between the inoperative lamp and ground as follows:
      CIRCUIT SPECIFICATION

      Inoperative Turn Signal Lamp Connector-Pin Circuit
      LH front parking/turn signal lamp C1023-1 29S-LF16 (OG/GN)
      RH front parking/turn signal lamp C1043-1 29S-LF16 (OG/GN)
      LH rear turn signal lamp C413-1 29S-LG12 (OG/YE)
      RH rear signal lamp C416-1 29S-LG12 (OG/YE)
      Fig 1: Measuring Voltage Between Inoperative Lamp And Ground
      G03202781Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : GO to Q2.
    2. No  : REPAIR the circuit in question. CLEAR the DTCs. TEST the system for normal operation.
  2. Q2 CHECK THE CONTROL GROUND CIRCUIT FOR SHORT TO POWER 
    • Key in OFF position.
    • Disconnect: FEM C201a or REM C420e.
    • Measure the voltage between the FEM or REM and ground as follows:
      CIRCUIT SPECIFICATION

      Inoperative Turn Signal Lamp FEM or REM Connector Circuit
      LH front parking/turn signal lamp FEM C201a-5 31S-LG11(BK/WH)
      RH front parking/turn signal lamp FEM C201a-4 31S-LG18(BK/YE)
      LH rear turn signal lamp REM C420e-3 31S-LG12(BK/YE)
      RH rear turn signal lamp REM C420e-4 31S-LG19(BK/BU)
      Fig 2: Measuring Voltage Between FEM Or REM And Ground
      G03202782Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    1. Yes  : REPAIR the circuit in question. CLEAR the DTCs. TEST the system for normal operation.
    2. No  : GO to Q3.
  3. Q3 CHECK THE CONTROL GROUND CIRCUIT FOR AN OPEN 
    • Connect: Inoperative Turn Signal Lamp.
    • Key in ON position.
    • Connect a fused (5A) jumper wire between the FEM or REM and ground as follows:
      CIRCUIT SPECIFICATION

      Inoperative Turn Signal Lamp FEM or REM Connector Circuit
      LH front parking/turn signal lamp FEM C201a-5 31S-LG11 (BK/WH)
      RH front parking/turn signal lamp FEM C201a-4 31S-LG18 (BK/YE)
      LH rear turn signal lamp REM C420e-3 31S-LG12 (BK/YE)
      RH rear turn signal lamp REM C420e-4 31S-LG19 (BK/BU)
      Fig 3: Connecting Fused (5A) Jumper Wire Between FEM Or REM And Ground
      G03202783Courtesy of FORD MOTOR CO.
    • Does the inoperative lamp now illuminate? 
    1. Yes  : For the front turn signal lamp, GO to Q4.

      For the rear turn signal lamp, GO to  Q5.

    2. No  : REPAIR the circuit in question. CLEAR the DTCs. TEST the system for normal operation.
  4. Q4 CHECK FOR FEM OPERATION 
    • Key in OFF position.
    • Disconnect all FEM connectors.
    • Check for:
      • corrosion
      • pushed-out pins
    • Connect all FEM 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 FEM. Refer to MODULE COMMUNICATIONS NETWORK 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.
  5. Q5 CHECK FOR REM OPERATION 
    • Key in OFF position.
    • Disconnect all REM connectors.
    • Check for:
      • corrosion
      • pushed-out pins
    • Connect all REM 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 REM. Refer to MODULE COMMUNICATIONS NETWORK . 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.
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