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Circuit/System Testing

  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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