B1423

DTC B1423/23 Pressure Sensor Circuit

DESCRIPTION

DTC Detection Condition:

This DTC is output when refrigerant pressure is extremely low (0.19 MPa (2.0 kgf/sq.cm, 28 psi) or less) or extremely high (3.14 MPa (32.0 kgf/sq.cm, 455 psi) or more). The A/C pressure sensor, which is installed on the pipe of the high pressure side to detect refrigerant pressure, outputs a refrigerant pressure signal to the A/C amplifier. The A/C amplifier converts this signal to pressure according to the sensor characteristics to control the compressor.

HINT: Be sure to check the refrigerant volume first when this DTC is output because this DTC can also be output if there is no refrigerant in the system.

Wiring Diagram:

Step 1:

Step 2-3:

Step 3 (Continued):

INSPECTION PROCEDURE