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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector X1 at the PSCM.
  2. Ignition OFF, test for less than 1.0 Ω of resistance between the control circuit terminal 2 and the control circuit terminal 3.
    • If greater than the specified range, test the control circuits for an open/high resistance. If circuits test normal, replace the power steering motor.
  3. Ignition OFF, test for less than 1.0 Ω of resistance between the control circuit terminal 3 and the control circuit terminal 1.
    • If greater than the specified range, test the control circuits for an open/high resistance. If circuits test normal, replace the power steering motor.
  4. Ignition OFF, test for less than 1.0 Ω of resistance between the control circuit terminal 2 and the control circuit terminal 1.
    • If greater than the specified range, test the control circuits for an open/high resistance. If circuits test normal, replace the power steering motor.
  5. Ignition OFF, test for greater than 1.0 MΩ of resistance between the control circuit terminal 2 and ground.
    • If less than the specified range, test the control circuit for a short to ground. If circuits test normal, replace the power steering motor.
  6. Ignition OFF, test for greater than 1.0 MΩ of resistance between the control circuit terminal 3 and ground.
    • If less than the specified range, test the control circuit for a short to ground. If circuits test normal, replace the power steering motor.
  7. Ignition OFF, test for greater than 1.0 MΩ of resistance between the control circuit terminal 1 and ground.
    • If less than the specified range, test the control circuit for a short to ground. If circuits test normal, replace the power steering motor.
  8. If all circuits test normal, test or replace the PSCM.
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