DTC 19, 22


id070200812300

DTC 19, 22

Air mix actuator, airflow mode actuator (+5 V power supply) system inspection

POSSIBLE CAUSE
•  Open circuit in wiring harness between A/C amplifier connector terminal 2P and airflow mode actuator connector terminal A
•  Short to ground in wiring harness between A/C amplifier connector terminal 2P and airflow mode actuator connector terminal A
•  Short to ground in wiring harness between A/C amplifier connector terminal 2P and air mix actuator connector terminal C (L.H.D.), A (R.H.D.)

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
INSPECT +5 V POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT
•  Disconnect the A/C amplifier connector (16-pin) and the airflow mode actuator connector.
•  Is there continuity between A/C amplifier connector (16-pin) terminal 2P and airflow mode actuator connector terminal A?
Yes
Go to the next step.
No
Repair the wiring harness.
2
INSPECT +5 V POWER SUPPLY CIRCUIT FOR SHORT TO GROUND
•  Is there a short circuit to ground in the wiring harness between A/C amplifier connector (16-pin) terminal 2P and airflow mode actuator connector terminal A?
Yes
Repair the wiring harness.
No
Go to the next step.
3
INSPECT +5 V POWER SUPPLY CIRCUIT FOR SHORT TO GROUND
•  Is there a short circuit to ground in the wiring harness between A/C amplifier connector (16-pin) terminal 2P and air mix actuator connector terminal C (L.H.D.), A (R.H.D.)?
Yes
Repair the wiring harness.
No
The system is normal at present. (Clear the past malfunction from memory.)