Test Description
WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers in the diagnostic procedures.
- 1 - The Diagnostic System Check - Engine Controls prompts the technician to complete some basic checks and store freeze frame data, if applicable. This creates an electronic copy of data taken when fault occurred. Information is then stored in the scan tool for later reference.
- 2 - This step checks whether rocker arm oil control solenoid is stuck ON. When ON at idle or low engine speed, the solenoid increases valve lift enough to cause engine to run rough or stall.
- 7 - Rocker arm oil pressure switch is closed when oil pressure is less than 3 psi (20 kPa).
- 9 - This step visually inspects operation of rocker arm oil control solenoid. Solenoid plunger and spool valve movement should be smooth and rapid from extended to retracted positions.