LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2005 >> Escape Hybrid, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 925 (Exterior Lighting System) >> Diagnostic Tests >> Fog Lamps >> Pinpoint Tests >> Pinpoint Test U: The Fog Lamps Are On Continuously >> Pinpoint Test U: The Fog Lamps Are On Continuously

Pinpoint Test U: The Fog Lamps Are On Continuously

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. U1 USE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCs) FROM THE SJB SELF-TEST 
    • Using the recorded results from the SJB self-test:
    • Were any DTCs recorded? 
    1. YES  : For DTC B2030, go to  U2 .

      For all other DTCs, REFER to the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index for correct diagnostics.

    2. NO  : Go to  U3.
  2. U2 CHECK CIRCUIT 477 (LB/BK) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Fog Lamp Relay C1007
    • Disconnect: SJB C2280c
      • Fig 1: Checking Circuit For Short To Ground
      GF0026005Courtesy of FORD MOTOR CO.
    • For Hybrid, measure the resistance between the fog lamp relay C1007-1, circuit 477 (LB/BK), harness side and ground.
      • Fig 2: Checking Circuit For Short To Ground
      GF0026006Courtesy of FORD MOTOR CO.
    • For Escape or Mariner, measure the resistance between the fog lamp relay C1007-1, circuit 477 (LB/BK), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  U4.
    2. NO  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  3. U3 CHECK CIRCUIT 478 (TN/OG) FOR A SHORT TO VOLTAGE 
    • Key in OFF position.
    • Disconnect: Fog Lamp Relay C1007
    • Key in ON position.
    • Do the fog lamps continue to illuminate? 
    1. YES  : REPAIR the circuit. TEST the system for normal operation.
    2. NO  : INSTALL a new fog lamp relay. TEST the system for normal operation.
  4. U4 CHECK FOR CORRECT SJB OPERATION 
    • Disconnect all the SJB connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the SJB 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 SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES article. 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.
scientia non olet · About LEMON Manuals