DTC B1260, B1261, B1274, B1275, B1282, B1283 (MULTIPLE DTCS INDICATED)


B3E070201038W05

DTC B1260, B1261, B1282, B1283, B1274, B1275

Climate control unit (+5 V power supply) system

POSSIBLE CAUSE

• Open or short circuit in wiring harnesses between climate control unit and solar radiation sensor, air mix actuator, or airflow mode actuator

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
• Disconnect the climate control unit connector and the airflow mode actuator connector.
• Is there an open circuit in the wiring harness between climate control unit terminal P and airflow mode actuator terminal B?
Yes
Repair the wiring harness.
No
Go to the next step.
2
• Is there a short circuit to ground in the wiring harness between climate control unit terminal P and airflow mode actuator terminal B?
Yes
Repair the wiring harness.
No
Go to the next step.
3
• Is there a short circuit to ground in the wiring harness between climate control unit terminal P and air mix actuator terminal A?
Yes
Repair the wiring harness.
No
Go to the next step.
4
• Is there a short circuit to ground in the wiring harness between climate control unit terminal P and solar radiation sensor terminal A?
Yes
Repair the wiring harness.
No
The system is normal at present. (Clear the past malfunction from the memory.)