Test Description

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

Test for the proper operation of the phase A circuit.
Test for the proper operation of the phase B circuit.
Test for the proper operation of the index marker pulse circuit.

Fig 1: DTC C0455 Tests (Steps 1 To 12)
Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC C0455 Tests (Steps 13 To 15)
Courtesy of GENERAL MOTORS CORP.