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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 2003 (Hybrid Controls - 3.6L (Hp5) - DTC P0AF7 To DTC P16F6) >> DTC P0AFF >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the B+ harness connector X3 at the APM.
  2. Connect a test lamp between the 12V battery positive and the APM connector X3 at the module.
  3. Ignition ON, observe the 12V Circuit Voltage parameter in the APM data list. The parameter should be within 0.5V of the actual 12V battery voltage.
    • If the voltage is not within the specified range, replace the APM.
    • If the voltage is within the specified range, repair the high resistance condition in the 12V circuit.
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