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HOMESERVICE MANUALSFORD2007ESCAPE BASE, 2.3 Z, FWD, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 149 (WINDOWS AND GLASS)DIAGNOSIS AND TESTINGGLASS, FRAMES AND MECHANISMSPINPOINT TESTSPINPOINT TEST G: THE DEFROST SYSTEM WILL NOT SHUT OFF AUTOMATICALLYTESTING
2007 Ford Escape Base, 2.3 Z, FWD, Automatic

Pinpoint Test G: The Defrost System Will Not Shut Off Automatically: Testing

2007 Ford Escape Base, 2.3 Z, FWD, AutomaticSECTION Testing
WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
  1. G1 CHECK CIRCUIT 186 (BN/LB) FOR A SHORT TO VOLTAGE 
    • Disconnect: SJB C2280e.
    • Key in ON position.
    • Is the rear window defrost ON? 
    • Yes  : REPAIR circuit 186 (BN/LB) for a short to voltage. TEST the system for normal operation.
    • No  : GO to G2.
  2. G2 CHECK THE SJB HEATED BACKLIGHT RELAY CIRCUIT FOR A SHORT TO POWER 
    • Key in OFF position.
    • Connect: SJB C2280e.
    • Disconnect: Heated Backlight Grid C396.
    • Key in ON position.
    • Measure the voltage between heated backlight connector C396-1, circuit 186 (BN/LB), harness side and ground.
      Fig 1: Checking SJB Heated Backlight Relay Circuit For Short To Power
      G03911590Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to G3.
    • No  : GO to  G4.
  3. G3 CHECK CIRCUIT 1427 (TN/LB) FOR A SHORT TO VOLTAGE 
    • Key in OFF position.
    • Disconnect: SJB C2280b.
    • Measure the voltage between SJB C2280b-25, circuit 1427 (TN/LB), harness side and ground.
      Fig 2: Checking Circuit 1427 (TN/LB) For Short To Voltage
      G03989067Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes  : REPAIR the circuit. TEST the system for normal operation.
    • No  : GO to G4.
  4. G4 CHECK FOR CORRECT SJB OPERATION 
    • Disconnect all SJB connectors.
    • Check for:
      • corrosion
      • pushed-out pins
    • Connect all SJB connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES for the removal and installation procedure. TEST the system for normal operation.
    • No  : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
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