B1422

CIRCUIT DESCRIPTION
This sensor sends 4 pulses per engine revolution to the ECM.

If the number ratio of the compressor speed divided by the engine speed is smaller than a predetermined value, the ECM turns the compressor OFF. And, the indicator flashes at about 1 second intervals.

Detection Item:

Wiring Diagram:

Steps 1 - 2:

Steps 3 - 4:

INSPECTION PROCEDURE