DTC 23

DTC B1423/23 Pressure Switch 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 pressure sensor, which is installed on the pipe of the high pressure side to detect refrigerant pressure, outputs the refrigerant pressure signal to the A/C amplifier. The A/C amplifier converts the signals 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 cycle.

Wiring Diagram:

Step 1-2:

Step 2(continued)-3:

Step 3(continued)-5:

Step 5(continued):

INSPECTION PROCEDURE