Air Conditioning System (Automatic)

DTC B1422/22 Compressor Lock Sensor Circuit

SYSTEM DESCRIPTION

DTC Detection Condition:

The ECM sends an engine speed signal to the A/C amplifier via CAN communication and BEAN communication.

The A/C amplifier reads the difference between compressor speed and engine speed. When the difference becomes too large, the A/C amplifier determines that the compressor locks, and turns the magnetic clutch off.

Wiring Diagram:

Step 1:

Step 1 (Continued)-3:

Step 3 (Continued)-4:

Step 5:

INSPECTION PROCEDURE