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Home >> Chevrolet >> 2008 >> Tahoe Hybrid, RWD >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Hybrid Engine Control System >> Diagnostic Information and Procedures >> DTC P1AF4-P1AF7 >> Circuit/System Testing

Circuit/System Testing

    IMPORTANT: DTC P1AE7 must test and pass before performing this diagnostic procedure.
  1. Inspect for DTC P1AE7.
    • If the DTC has set, a loss of isolation condition within the hybrid battery has caused this DTC to set. Refer to DTC P1AE6 or P1AE7 .
  2. Ignition ON, retest for DTCs P1AF4, P1AF5, P1AF6 and P1AF7.
    • If the DTC resets, program the PIM with the latest software version and recheck for DTCs. If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
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