B1422

DTC B1422/22 COMPRESSOR LOCK SENSOR CIRCUIT

CIRCUIT DESCRIPTION

DTC Detection Condition:

The ECM sends the engine speed signal to the TACO terminal of the A/C amplifier. The A/C amplifier reads the difference between compressor speed and engine speed. When the difference becomes too big, the A/C amplifier determines that the compressor locks, and turns the magnetic clutch off.

Wiring Diagram:

Step 1:

Step 2:

Step 3-4:

Step 5:

INSPECTION PROCEDURE