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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 979 (Power Take-Off) >> Diagnostic Information and Procedures >> DTC P016C >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • Repair any ECM related DTCs or symptoms before using this diagnostic.
  • This DTC may be stored as a history DTC without affecting the operation of the ECM or PTOM. Do not replace the ECM or PTOM if this DTC is stored only as a history DTC and is not retrieved as a current DTC.
  1. Engine ON, clear codes in the PTOM and then engage PTO. Verify that DTC P061C does not reset as current in the PTOM.
    • If the specified code sets as current, replace the ECM.
  2. If all circuits test normal, refer to Diagnostic Aids. Do not replace the PTOM.
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