Pulsed Secondary Air Injection (Pair)

Pulsed Secondary Air Injection (PAIR/AIV) Input/Output Signals:

CIRCUIT OPERATION

When the ECM senses the proper conditions suitable for PAIR operation, via the water temperature sensor, idle switch and crank angle sensor it supplies the ground circuit to the PAIRC solenoid allowing the system to operate. Refer to EMISSION CONTROLS for further description of the PAIR valve.

Vacuum Control Solenoid:

PULSED SECONDARY AIR INJECTION (PAIRC) CONTROL SOLENOID

The ECM supplies the ground circuit to the PAIRC solenoid. When activated, it redirects vacuum from the source and vent ports to the source and valve ports, applying vacuum to the PAIR.

PAIR/AIV Solenoid Operation:

PAIR OPERATION CHART