Test Description

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

1. 4.  This step simulates an open MPA switch.
2. 5.  This step simulates a closed MPA switch.
3. 6.  This step tests the MPA switch by closing the switch manually.
4. 7.  This step tests the MPA switch by ensuring the switch plunger is in the open position.

Fig 1: DTC C0282, C0285, Or C0286 (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC C0282, C0285, Or C0286 (2 Of 2)

Courtesy of GENERAL MOTORS CORP.