pontiac Workshop Repair Guides

Pontiac Workshop Service and Repair Manuals

Air Injection Relief Valve > < Air Injection Pump Relay|Locations|Page 4538
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Air Injection Pump Relay: Description and Operation

PURPOSE

The Powertrain Control Module (PCM) controls operation of the electric air pump relay which in turn controls air availability to the air injection
system.

OPERATION

The PCM completes the ground to the coil side of the relay. The relay in turn activates the electric air pump and the integral stop valve.

Air Injection Relief Valve > < Air Injection Pump Relay|Locations|Page 4538