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Home >> Ford >> 2008 >> Escape Base, 2.3 Z, FWD, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Pinpoint Test Hg: Positive Crankcase Ventilation (PCV) System Through Pinpoint Test JD: Crankshaft Position (CKP) Sensor - (Except Diesel & Hybrid) >> PINPOINT TEST HY: Generator/Regulator System >> Test Procedure
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Test Procedure

  1. HY1 CHECK THE GENERATOR CIRCUITRY AND OPERATION 
    NOTE: If the concern is still present after checking the generator circuitry in the workshop article, return to the PC/ED to continue generator diagnosis.
    • Check for any generator related DTCs. Refer to the GENERATOR AND REGULATOR articles.
    • Is the charging system diagnosed and repaired in the GENERATOR AND REGULATOR aricles? 
    Yes No
    The system is operating correctly at this time. GO to  HY2.
  2. HY2 CHECK THE GENERATOR MONITOR SIGNAL 
    • Key ON, engine running.
    • Access the PCM and monitor the GENMON PID.
    • Is the duty cycle between 5% and 97% and not excessively fluctuating? 
    Yes No
    The system is operating correctly at this time. GO to  HY3.
  3. HY3 CHECK FOR CORRECT PCM OPERATION 
    NOTE: When the battery (or PCM) is disconnected and connected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The charging system set point may also vary. The vehicle may need to be driven to relearn its strategy.
    • Disconnect all the PCM connectors.
    • Visually inspect for:
      • pushed out pins
      • corrosion
    • Connect all the PCM connectors and make sure they seat correctly.
    • Carry out the PCM self-test and verify the concern is still present.
    • Is the concern still present? 
    Yes No
    INSTALL a new PCM. REFER toFLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming the VID Block for a Replacement PCM. The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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