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Home >> Pontiac >> 2008 >> Torrent GXP, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 108 (Power Steering System) >> Diagnostic Information and Procedures >> DTC C0545 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector X3 at the PSCM.
  2. Ignition OFF, test for 2-20 Ω between the signal circuit terminal 4 and the signal circuit terminal 2.
    • If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column.
  3. Ignition OFF, test for 100-500 Ω between the signal circuit terminal 8 and the signal circuit terminal 1.
    • If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column.
  4. Ignition OFF, test for 300-1000 Ω between the signal circuit terminal 7 and the signal circuit terminal 1.
    • If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column.
  5. Ignition OFF, test for 50-200 Ω between the signal circuit terminal 6 and the signal circuit terminal 1.
    • If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column.
  6. Ignition OFF, test for 200-800 Ω between the signal circuit terminal 5 and the signal circuit terminal 1.
    • If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column.
  7. Ignition OFF, test for greater than 1.0 MΩ between the signal circuit terminal 2 and the signal circuit terminal 1.
    • If less than the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column.
  8. Ignition OFF, test for greater than 1.0 MΩ of resistance between the signal circuit terminal 1 and ground.
    • If less than the specified range, test the signal circuit for a short to ground. If circuits test normal, replace the steering column.
  9. Ignition OFF, test for greater than 1.0 MΩ between the signal circuit terminal 2 and ground.
    • If less than the specified range, test the signal circuit for a short to ground. If circuits test normal, replace the steering column.
  10. If all circuits test normal, replace the PSCM.
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