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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 362 (Automatic Transmission - 6L80/6L90 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P182E or P1915 >> Circuit/System Testing

Circuit/System Testing

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    NOTE:

    You must perform Circuit/System Verification first.

  1. Ignition OFF, remove the automatic transmission fluid pan. Refer to Automatic Transmission Fluid, Fluid Pan and/or Filter Replacement .
  2. Disconnect the IMS connector at the Q8 control solenoid valve assembly.
  3. Ignition ON, verify the scan tool engine control module (ECM) P/N switch displays In Gear.
    • If not the specified value, test the P/N signal circuit for a short to ground. If the circuit tests normal, replace the engine control module.
  4. Verify the scan tool IMS A/B/C/P parameter displays HI for all four signal circuits.
    • If not the specified value, replace the Q8 control solenoid valve assembly.
  5. Connect a 3A fused jumper wire between each transmission range signal circuit terminals listed below and the IMS ground circuit. The appropriate scan tool IMS A/B/C/P parameter should display LOW when the terminal is connected to the IMS ground circuit.
    • Switch Signal A: terminal E to terminal A
    • Switch Signal B: terminal D to terminal A
    • Switch Signal C: terminal C to terminal A
    • Switch Signal P: terminal P to terminal A
    • If not the specified value, replace the Q8 control solenoid valve assembly.
  6. If all circuits test normal, test or replace the IMS.
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