B266C

B266B, B266C REAR IN-VEHICLE SENSOR

DTC Logic


DTC DETECTION LOGIC

NOTE:
- If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to HAC68, "DTC Logic".
- If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. "DTC Logic" Control Unit.






DTC CONFIRMATION PROCEDURE


1. PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT
1.Turn ignition switch ON.
2.Select "Self Diagnostic Result" mode of "HVAC" using CONSULT.
3.Check DTC.
Is DTC detected?
YES- Refer to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK REAR IN-VEHICLE SENSOR POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect rear in-vehicle sensor connector.
3.Turn ignition switch ON.
4.Check voltage between rear in-vehicle sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- GO TO 4.

2. CHECK REAR IN-VEHICLE SENSOR GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Check continuity between rear in-vehicle sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair harness or connector.

3. CHECK REAR IN-VEHICLE SENSOR

Check rear in-vehicle sensor. Refer to "Component Inspection" .
Is the inspection result normal?
YES- Replace A/C auto amp. Refer to "Removal and Installation" Service and Repair.
NO- Replace rear in-vehicle sensor. Refer to "REAR A/C UNIT ASSEMBLY : Removal and Installation" Rear A/C Unit Assembly.

4. CHECK REAR IN-VEHICLE SENSOR POWER SUPPLY CIRCUIT FOR OPEN

1.Turn ignition switch OFF.
2.Disconnect A/C auto amp. connector.
3.Check continuity between rear in-vehicle sensor harness connector and A/C auto amp. harness connector.





Is the inspection result normal?
YES- GO TO 5.
NO- Repair harness or connector.

5. CHECK REAR IN-VEHICLE SENSOR POWER SUPPLY CIRCUIT FOR GROUND SHORT

Check continuity between rear in-vehicle sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 6.
NO- Repair harness or connector.

6. CHECK REAR IN-VEHICLE SENSOR POWER SUPPLY CIRCUIT FOR POWER SHORT

1.Turn ignition switch ON.
2.Check voltage between rear in-vehicle sensor harness connector and ground.





Is the inspection result normal?
YES- Replace A/C auto amp. Refer to "Removal and Installation" Service and Repair.
NO- Repair harness or connector.


Component Inspection


1. CHECK REAR IN-VEHICLE SENSOR

1.Turn ignition switch OFF.
2.Disconnect rear in-vehicle sensor connector.
3.Check resistance between rear in-vehicle sensor terminals.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace rear in-vehicle sensor. Refer to "REAR A/C UNIT ASSEMBLY : Removal and Installation" Rear A/C Unit Assembly.