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Home >> Chevrolet >> 2005 >> Impala LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 945 (Hybrid Engine Control System) >> Diagnostic Information and Procedures >> DTC P0AF7 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the SGCM coolant pump operates.
  2. Ignition ON, command the scan tool SGCM coolant pump output control ON and OFF.
    • If the SGCM coolant pump does not operate refer to SGCM Coolant Pump Malfunction in Circuit/System Testing .
  3. Inspect all 12-volt battery connections for a short to ground as follows:
    • At battery
    • At SGCM
    • At fuse block
  4. If all connections are normal, replace the SGCM.
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