Upper Ventilator Door Motor

B275F, B2760, B2761 UPPER VENTILATOR DOOR MOTOR

DTC Logic

DTC DETECTION LOGIC

NOTE:
- If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. CAN Comm Circuit.
- If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. Control Unit.
- If All of door motors DTC (B2750 - B2764) are detected, check door motor PBR power supply and ground circuit. Without Forest Air.

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- .
NO- INSPECTION END

Diagnosis Procedure

1. CHECK UPPER VENTILATOR DOOR MOTOR OPERATION

1.Turn ignition switch ON.
2.Touch "Upper Vent" in "Climate" screen and check by operation sound that upper ventilator door motor operates.
Does upper ventilator door motor operate?
YES- GO TO 8.
NO- GO TO 2.

2. CHECK UPPER VENTILATOR DOOR MOTOR DRIVE SIGNAL

Check voltage between upper ventilator door motor harness connector and ground when "Upper Vent" in "Climate" screen is touched.

Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 3.

3. CHECK UPPER VENTILATOR DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN

1.Turn ignition switch OFF.
2.Disconnect A/C auto amp. connector.
3.Disconnect upper ventilator door motor connector.
4.Check continuity between upper ventilator door motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?
YES- GO TO 4.
NO- Repair harness or connector.

4. CHECK UPPER VENTILATOR DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR GROUND SHORT

Check continuity between upper ventilator door motor harness connector and ground.

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

5. CHECK UPPER VENTILATOR DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR BATTERY SHORT

1.Turn ignition switch ON.
2.Check voltage between upper ventilator door motor harness connector and ground.

Is the inspection result normal?
YES- GO TO 15.
NO- Repair harness or connector.

6. CHECK UPPER VENTILATOR DOOR MOTOR

Check upper ventilator door motor. .
Is the inspection result normal?
YES- GO TO 7.
NO- Replace upper ventilator door motor. Upper Ventilator Door Motor.

7. CHECK INSTALLATION OF UPPER VENTILATOR DOOR MOTOR

Check upper ventilator door motor is properly installed. Door Motor.
Is the inspection result normal?
YES- GO TO 15.
NO- Repair or replace malfunctioning parts.

8. CHECK UPPER VENTILATOR DOOR MOTOR PBR FEEDBACK SIGNAL

Check voltage between A/C auto amp. harness connector and ground when "Upper Vent" in "Climate" screen is touched.

Is the inspection result normal?
YES- GO TO 15.
NO- GO TO 9.

9. CHECK UPPER VENTILATOR DOOR MOTOR PBR FEEDBACK SIGNAL CIRCUIT FOR OPEN

1.Turn ignition switch OFF.
2.Disconnect A/C auto amp. connector.
3.Disconnect upper ventilator door motor connector.
4.Check continuity between upper ventilator door motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?
YES- GO TO 10.
NO- Repair harness or connector.

10. CHECK UPPER VENTILATOR DOOR MOTOR PBR FEEDBACK SIGNAL CIRCUIT FOR SHORT

Check continuity between upper ventilator door motor harness connector and ground.

Is the inspection result normal?
YES- GO TO 11.
NO- Repair harness or connector.

11. CHECK UPPER VENTILATOR DOOR MOTOR PBR POWER SUPPLY

1.Connect A/C auto amp. connector.
2.Turn ignition switch ON.
3.Check voltage between upper ventilator door motor harness connector and ground.

Is the inspection result normal?
YES- GO TO 13.
NO- GO TO 12.

12. CHECK UPPER VENTILATOR DOOR MOTOR PBR POWER SUPPLY CIRCUIT FOR OPEN

1.Turn ignition switch OFF.
2.Disconnect A/C auto amp. connector.
3.Check continuity between upper ventilator door motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?
YES- GO TO 15.
NO- Repair harness or connector.

13. CHECK UPPER VENTILATOR DOOR MOTOR PBR GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect A/C auto amp. connector.
3.Check continuity between upper ventilator door motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?
YES- GO TO 14.
NO- Repair harness or connector.

14. CHECK UPPER VENTILATOR DOOR MOTOR PBR

Check upper ventilator door motor PBR. .
Is the inspection result normal?
YES- GO TO 15.
NO- Replace upper ventilator door motor. Upper Ventilator Door Motor.

15. CHECK INTERMITTENT INCIDENT

Intermittent Incident.
Is the inspection result normal?
YES- Replace A/C auto amp. Removal And Installation.
NO- Repair or replace malfunction parts.

Component Inspection (Motor)

1. CHECK UPPER VENTILATOR DOOR MOTOR

1.Turn ignition switch OFF.
2.Disconnect upper ventilator door motor connector.
3.Supply upper ventilator door motor terminals with battery voltage and check by visually and operation sound that upper ventilator door motor operates.

Is the inspection result normal?
YES- INSPECTION END
NO- Replace upper ventilator door motor. Refer to{LINK_TO_MANY:0000000006885621}{LINK_TO_MANY:0000000006885622}, "UPPER VENTILATOR DOOR MOTOR :
Removal and Installation".

Component Inspection (PBR)

1. CHECK UPPER VENTILATOR DOOR MOTOR PBR

Check resistance between upper ventilator door motor terminals.