Test Description

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

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

2. Listen for an audible click when the solenoid operates. Command both the ON and OFF states. Repeat the commands as necessary.
3. Tests the exhaust valve solenoid circuit for proper operation.
4. Tests the control circuit for a short to voltage.

Fig 1: DTC C0663 (1 of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC C0663 (2 of 2)

Courtesy of GENERAL MOTORS CORP.