pontiac Workshop Repair Guides

Pontiac Workshop Service and Repair Manuals

Sensors and Switches - Emission Control Systems > < Air Injection Pump Relay|Locations|Page 4608
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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.

Sensors and Switches - Emission Control Systems > < Air Injection Pump Relay|Locations|Page 4608