Test Description

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The numbers below refer to the step numbers on the diagnostic table.

3. This step will help determine if the fault is in the analog or the digital portion of the SWPS.
4. This step determines if the condition is currently present.
6. This step will help determine if a short to voltage exists in any of the digital circuits. A short to voltage in any of these circuits will cause all parameters to remain high.
14. This step checks for proper voltage to the phase A and Phase B circuits at the sensor and for proper operation of the sensor.
15. This step checks for proper voltage to the marker pulse circuit of the sensor and for proper operation of the sensor.
17. This step checks for proper operation of the sensor circuits by testing the sensors ability to switch a voltage signal between high and low.

Fig 1: DTC C0455 (Step 1-4)
Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC C0455 (Step 5-14)
Courtesy of GENERAL MOTORS CORP.

Fig 3: DTC C0455 (Step 15-22)
Courtesy of GENERAL MOTORS CORP.