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Home >> Infiniti >> 2011 >> M37x AWD V6-3.7L (VQ37VHR) >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> B Code Charts >> B2762

B2762


B2762, B2763, B2764 REAR MODE DOOR MOTOR





DTC Logic

DTC DETECTION LOGIC

NOTE:
- If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. HAC-
94, "DTC Logic".
- If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. Control Unit Control Unit Control Unit, "DTC Logic".
- If All of door motors DTC (B2750 � B276A) are detected, check door motor PBR power supply and ground circuit. (With Forest
Air).
- 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-III
1. Turn ignition switch ON.
2. Select "Self Diagnostic Result" mode of "HVAC" using CONSULT-III.
3. Check DTC.
Is DTC detected?
YES - SEE Diagnosis Procedure.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK REAR MODE DOOR MOTOR OPERATION
1. Turn ignition switch ON.
2. Operate MODE switch (driver side) and DEF switch and check by operation sound that rear mode door motor.

NOTE:
"DUAL": OFF
Does rear mode door motor operate?
YES - GO TO 8.
NO - GO TO 2.
2.CHECK REAR MODE DOOR MOTOR DRIVE SIGNAL
Check voltage between rear mode door motor harness connector and ground, when MODE switch (driver side) and DEF switch are operated.

NOTE:
"DUAL": OFF





Is the inspection result normal?
YES - GO TO 6.
NO - GO TO 3.
3.CHECK REAR MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Disconnect rear mode door motor connector.
4. Check continuity between rear mode 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 REAR MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR GROUND SHORT
Check continuity between rear mode door motor harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair harness or connector.
5.CHECK REAR MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR BATTERY SHORT
1. Turn ignition switch ON.
2. rear mode door motor harness connector and ground.





Is the inspection result normal?
YES - GO TO 15.
NO - Repair harness or connector.
6.CHECK REAR MODE DOOR MOTOR
Check rear mode door motor. SEE Component Inspection (Motor).
Is the inspection result normal?
YES - GO TO 7.
NO - Replace rear mode door motor. Rear Mode Door Motor.
7.CHECK INSTALLATION OF REAR MODE DOOR MOTOR
Check rear mode door motor is properly installed. Door Motor.
Is the inspection result normal?
YES - GO TO 15.
NO - Repair or replace malfunctioning parts.
8.CHECK REAR MODE DOOR MOTOR PBR FEEDBACK SIGNAL
Check voltage between A/C auto amp. harness connector and ground when operate MODE switch (driver side) and DEF switch.

NOTE:
"DUAL": OFF





Is the inspection result normal?
YES - GO TO 15.
NO - GO TO 9.
9.CHECK REAR MODE DOOR MOTOR PBR FEEDBACK SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Disconnect rear mode door motor connector.
4. Check continuity between rear mode 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 REAR MODE DOOR MOTOR PBR FEEDBACK SIGNAL CIRCUIT FOR SHORT
Check continuity between rear mode door motor harness connector and ground.





Is the inspection result normal?
YES - GO TO 11.
NO - Repair harness or connector.
11.CHECK REAR MODE DOOR MOTOR PBR POWER SUPPLY
1. Connect A/C auto amp. connector.
2. Turn ignition switch ON.
3. Check voltage between rear mode door motor harness connector and ground.





Is the inspection result normal?
YES - GO TO 13.
NO - GO TO 12.
12.CHECK REAR MODE DOOR MOTOR PBR POWER SUPPLY CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between rear mode 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 REAR MODE DOOR MOTOR PBR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between rear mode 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 REAR MODE DOOR MOTOR PBR
Check rear mode door motor PBR. SEE Component Inspection (PBR).
Is the inspection result normal?
YES - GO TO 15.
NO - Replace rear mode door motor. Rear Mode 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 REAR MODE DOOR MOTOR
1. Turn ignition switch OFF.
2. Disconnect rear mode door motor connector.
3. Supply rear mode door motor terminals with battery voltage and check by visually and operation sound that rear mode door motor operates.





Is the inspection result normal?
YES - INSPECTION END
NO - Replace rear mode door motor. Upper Ventilator Door Motor.




Component Inspection (PBR)
1.CHECK REAR MODE DOOR MOTOR PBR
Check resistance between rear mode door motor terminals.





Is the inspection result normal?
YES - INSPECTION END
NO - Replace rear mode door motor. Upper Ventilator Door Motor.
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