10472236

1.

Possible DTC : P1622

＊ CC-CODE

(1)

C018 (Line : Short circuit)

A.

Possible causes of trouble :

Short circuit to Bat line

A/C compressor relay defective

(2)

C019 (Line : Open circuit)

A.

Possible causes of trouble :

Short circuit to GND line, Open circuit

A/C compressor relay defective

Pressure switch defective

A/C compressor magnetic clutch

2.

Ignition on

Measure the voltage at compressor relay (A/C compressor) pin 86 to GND.

Set value : 8 ~ 15V

3.

If set value is not attained , check the fuse

4.

Measure the voltage at compressor relay (A/C compressor) pin 30 to GND.

Set value : 8 ~ 15V

If set value is not attained, check the supply voltage.

5.

Check wiring from compressor relay pin 87 to plug of compressor.

Check wiring between relay pin 85 to ECU pin 21.

6.

Check wiring between pressure switch to ECU pin 51, pin 52.

7.

Check A/C compressor magnetic clutch if proceeding tests do not reveal the cause of trouble.