DTC 07, 19, 22 (WHEN TWO OR MORE DTCS ARE INDICATED AT THE SAME TIME) [FULL-AUTO AIR CONDITIONER]

id0702c1266200

DTC 07, 19, 22

Ground system of cabin temperature sensor, air mix actuator, and airflow mode actuator (past malfunction, multiple DTCs indicated)
DETECTION CONDITION
•  Once or more in the past, the ground system of cabin temperature sensor, air mix actuator, or airflow mode actuator was not grounded.
POSSIBLE CAUSE
•  Open circuit in wiring harness between climate control unit and cabin temperature sensor, air mix actuator, or airflow mode actuator
•  Climate control unit connector malfunction
•  Climate control unit malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
INSPECT CABIN TEMPERATURE SENSOR, AIR MIX ACTUATOR, AND AIRFLOW MODE ACTUATOR FOR OPEN CIRCUIT
•  Switch the ignition to off.
•  Disconnect the cabin temperature sensor connector.
•  Verify the continuity between cabin temperature sensor connector terminal B and body ground.
Note
•  Inspect for continuity while shaking the wiring harness between the cabin temperature sensor and climate control unit.
•  Is there continuity?
Yes
Go to Step 4.
No
Go to the next step.
2
INSPECT CABIN TEMPERATURE SENSOR, AIR MIX ACTUATOR, AND AIRFLOW MODE ACTUATOR FOR OPEN CIRCUIT
•  Inspect the wiring harness for continuity between climate control unit connector terminal S and body ground.
Note
•  Inspect for continuity while shaking the wiring harness between the cabin temperature sensor and climate control unit.
•  Is there continuity?
Yes
Repair/replace the malfunctioning vehicle wiring harness.
After repair procedure, go to the next step.
No
Go to the next step.
3
INSPECT CLIMATE CONTROL UNIT CONNECTOR CONDITION
•  Disconnect the climate control unit connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Are the connector and terminals normal?
Yes
Go to the next step.
No
Repair/replace the malfunctioning vehicle wiring harness, connector, or terminal.
After repair procedure, go to the next step.
4
VERIFY THAT SAME DTC IS NOT OUTPUT
•  Reconnect the disconnected connectors.
•  Delete stored DTCs.
•  Shake the wiring harness between the cabin temperature sensor and climate control unit.
•  Verify DTCs.
•  Are DTCs 07, 19, 22 output?
Yes
Repeat the inspection from Step 1.
•  If the malfunction does not recur, go to the next step.
•  If the malfunction recurs, replace the climate control unit.
No
Go to the next step.
5
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Verify other DTCs displayed.
•  Are there other DTCs output?
Yes
Perform the corresponding DTC inspection.
No
DTC troubleshooting completed.