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Home >> Ford >> 2005 >> Escape Hybrid, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 925 (Exterior Lighting System) >> Diagnostic Tests >> Headlamps >> Pinpoint Tests >> Pinpoint Test B: The Low Beams Are Inoperative >> Pinpoint Test B: The Low Beams Are Inoperative

Pinpoint Test B: The Low Beams Are Inoperative

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. B1 CHECK THE MULTIFUNCTION SWITCH 
    • Key in OFF position.
    • Disconnect: Multifunction Switch C2080
    • Carry out the multifunction switch component test. Refer to COMPONENT TESTING article.
    • Is the multifunction switch OK? 
    1. YES  : Go to  B2.
    2. NO  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
  2. B2 CHECK CIRCUIT 1033 (RD/YE) FOR AN OPEN 
    • Disconnect: SJB C2280e
      • Fig 1: Checking Circuit For Open
      GF0025954Courtesy of FORD MOTOR CO.
    • Measure the resistance between the multifunction switch C2080-13, circuit 1033 (RD/YE), harness side and the SJB C2280e-1, circuit 1033 (RD/YE), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  B3.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. B3 CHECK CIRCUIT 160 (DB/WH) (LH HEADLAMP) OR CIRCUIT 161 (DG/OG) (RH HEADLAMP) FOR A SHORT TO GROUND 
    • Disconnect: Inoperative Headlamp
    • Disconnect: SJB C2280b
    • Measure the resistance between the inoperative headlamp, harness side and ground as follows:
      Inoperative Headlamp Connector-Pin (Escape) Connector-Pin (Mariner) Circuit
      LH C1021-7 C1284-1 160 (DB/WH)
      RH C1041-7 C1285-1 161 (DG/OG)
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : Go to  B4.
    2. NO  : REPAIR the circuit in question. RUN the on-demand self-test (required to clear certain DTCs). CORRECT any unresolved DTCs. CLEAR all DTCs. TEST the system for normal operation.
  4. B4 CHECK CIRCUIT 785 (BK/LG) FOR AN OPEN 
      Fig 2: Checking Circuit For Open
      GF0025955Courtesy of FORD MOTOR CO.
    • Measure the voltage between the SJB C2280b-32, circuit 785 (BK/LG), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  B5.
    2. NO  : VERIFY the BJB fuse 19 (40A) (Escape, Mariner) or fuse 22 (40A) (Hybrid) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
  5. B5 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.
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