2011 INFINITI QX56 turn signal

HAC-92
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
B2634, B2635 FRONT AIR MIX DO
OR MOTOR (PASSENGER SIDE)
NO >> Repair or replace malfunctioning part.
3.CHECK FRONT AIR MIX DOOR MOTOR (PASSEN GER SIDE) COMMUNICATION SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front air mix door motor RH and A/C auto amp. connector.
3. Check continuity between front air mix door motor RH harness connector and A/C auto am\
p. harness con- nector.
Is the inspection result normal?
YES >> Replace A/C auto amp.. Refer to HAC-146, "Removal and Installation".
NO >> Repair harness or connector.
Front air mix door motor RH A/C auto amp. Continuity
Connector Terminal Connector Terminal
M255 3 M50 16 Existed
Revision: 2010 May2011 QX56

B2636, B2637, B2638, B2639, B2654, B2655 FR ONT MODE DOOR MOTOR
HAC-93
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
C
D
E
F
G H
J
K L
M A
B
HAC
N
O P
B2636, B2637, B2638, B2639, B2654, B2655 FRONT MODE DOOR MOTOR
DTC LogicINFOID:0000000006275927
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” m ode of “HVAC” using CONSULT-III.
3. Check DTC.
Is DTC detected?
YES >> Refer to HAC-93, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006275928
1.CHECK FRONT MODE DOOR MOTOR COMMUNICATION SIGNAL
1. Turn ignition switch ON.
2. Check output waveform between front mode door motor harness connector and ground with the oscillo-
scope.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK INSTALLATION OF FRONT MO DE DOOR MOTOR CONTROL LINKAGE
Check front mode door motor control linkage is properly installed. Refer to HAC-152, "
Exploded View".
DTCItems
(CONSULT-III screen terms) DTC detection condition Possible cause
B2636 DR VENT DOOR FAIL When the malfunctioning door position
is detected at VENT position
 Front mode door motor(PBR internal circuit is open or short-
ed)
 Front mode door motor control linkage installation condition
 A/C auto amp.
 Harness and connector (LIN communication line is open or
shorted)
B2637 DR B/L DOOR FAIL
When the malfunctioning door position
is detected at B/L position
B2638 DR D/F1 DOOR FAIL When the malfunctioning door position
is detected at FOOT position
B2639 DR DEF DOOR FAIL When the malfunctioning door position
is detected at DEF position
B2654 D/F2 VENT DOOR FAIL When the malfunctioning door position
is detected at D/F position
B2655 B/L DOOR FAIL When the malfunctioning door position
is detected at B/L position
+
−Output waveform
Front mode door motor
Connector Terminal
M253 3 Ground
SJIA1453J
Revision: 2010 May2011 QX56

HAC-94
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
B2636, B2637, B2638, B
2639, B2654, B2655 FRON T MODE DOOR MOTOR
Is the inspection result normal?
YES >> Replace front mode door motor. Refer to HAC-153, "MODE DOOR MOTOR : Removal and Instal-
lation".
NO >> Repair or replace malfunctioning part.
3.CHECK FRONT MODE DOOR MOTOR COMMUNICATION SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front mode door moto r and A/C auto amp. connector.
3. Check continuity between front mode door moto r harness connector and A/C auto amp. harness connec-
tor.
Is the inspection result normal?
YES >> Replace A/C auto amp.. Refer to HAC-146, "Removal and Installation".
NO >> Repair harness or connector.
Front mode door motor A/C auto amp. Continuity
Connector Terminal Connector Terminal
M253 3 M50 16 Existed
Revision: 2010 May2011 QX56

B263D, B263E, B263F INTAKE DOOR MOTOR
HAC-95
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
C
D
E
F
G H
J
K L
M A
B
HAC
N
O P
B263D, B263E, B263F INTAKE DOOR MOTOR
DTC LogicINFOID:0000000006275929
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” m ode of “HVAC” using CONSULT-III.
3. Check DTC.
Is DTC detected?
YES >> Refer to HAC-95, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006275930
1.CHECK INTAKE DOOR MOTOR COMMUNICATION SIGNAL
1. Turn ignition switch ON.
2. Check output waveform between intake door motor harness connector and ground with the oscilloscope.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK INSTALLATION OF INTAKE DOOR MOTOR CONTROL LINKAGE
Check intake door motor control linkage is properly installed. Refer to HAC-152, "
Exploded View".
Is the inspection result normal?
YES >> Replace intake door motor. Refer to HAC-153, "INTAKE DOOR MOTOR : Removal and Installa-
tion".
NO >> Repair or replace malfunctioning part.
DTC Items
(CONSULT-III screen terms) DTC detection condition Possible cause
B263D FRE DOOR FAIL When the malfunctioning intake door
position is detected at FRE position Intake door motor
(PBR internal circuit is open or short-
ed)
 Intake door motor control linkage in-
stallation condition
 A/C auto amp.
 Harness and connector (LIN communication line is open or
shorted)
B263E 20P FRE DOOR FAIL
When the malfunctioning intake door
position is detected at 20% FRE posi-
tion
B263F REC DOOR FAIL When the malfunctioning intake door
position is detected at REC position
+
−Output waveform
Intake door motor
Connector Terminal
M254 3 Ground
SJIA1453J
Revision: 2010 May2011 QX56

HAC-96
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
B263D, B263E, B263F INTAKE DOOR MOTOR
3.CHECK INTAKE DOOR MOTOR CO
MMUNICATION SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake door motor and A/C auto amp. connector.
3. Check continuity between intake door motor har ness connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES >> Replace A/C auto amp.. Refer to HAC-146, "Removal and Installation".
NO >> Repair harness or connector.
Intake door motor A/C auto amp. Continuity
Connector Terminal Connector Terminal
M254 3 M50 16 Existed
Revision: 2010 May2011 QX56

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR
HAC-97
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
C
D
E
F
G H
J
K L
M A
B
HAC
N
O P
B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR
DTC LogicINFOID:0000000006275931
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” m ode of “HVAC” using CONSULT-III.
3. Check DTC.
Is DTC detected?
YES >> Refer to HAC-97, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006275932
1.CHECK UPPER VENTILATOR DOOR MOTOR COMMUNICATION SIGNAL
1. Turn ignition switch ON.
2. Check output waveform between upper vent door motor harness connector and ground with the oscillo-
scope.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK INSTALLATION OF UPPER VENTILATOR DOOR MOTOR
Check upper ventilator door motor is properly installed. Refer to HAC-152, "
Exploded View".
Is the inspection result normal?
YES >> Replace upper ventilator door motor. Refer to HAC-154, "UPPER VENTILATOR DOOR MOTOR :
Removal and Installation".
DTCItems
(CONSULT-III screen terms) DTC detection condition Possible cause
B2661
UPPER VENT DOOR MOT When the malfunctioning upper ventila-
tor door position is detected at OPEN
position
 Upper ventilator door motor
(PBR internal circuit is open or short-
ed)
 Upper ventilator door motor installation condition
 A/C auto amp.
 Harness and connector (LIN communication line is open or
shorted)
B2662
When the malfunctioning upper ventila-
tor door position is detected at middle
position
B2663 When the malfunctioning upper ventila-
tor door position is detected at shut po-
sition
+
−Output waveform
Upper vent door motor
Connector Terminal
M256 3 Ground
SJIA1453J
Revision: 2010 May2011 QX56

HAC-98
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
B2661, B2662, B2
663 UPPER VENTILATOR DOOR MOTOR
NO >> Repair or replace malfunctioning part.
3.CHECK UPPER VENTILATOR DOOR MO TOR COMMUNICATION SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect upper vent door motor and A/C auto amp. connector.
3. Check continuity between upper vent door moto r harness connector and A/C auto amp. harness connec-
tor.
Is the inspection result normal?
YES >> Replace A/C auto amp.. Refer to HAC-146, "Removal and Installation".
NO >> Repair harness or connector.
Upper vent door motor A/C auto amp. Continuity
Connector Terminal Connector Terminal
M256 3 M50 16 Existed
Revision: 2010 May2011 QX56

B2664, B2665 REAR AIR MIX DOOR MOTOR
HAC-99
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
C
D
E
F
G H
J
K L
M A
B
HAC
N
O P
B2664, B2665 REAR AI R MIX DOOR MOTOR
DTC LogicINFOID:0000000006275933
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1. Turn ignition switch ON.
2. Select “Self Diagnostic Result” m ode of “HVAC” using CONSULT-III.
3. Check DTC.
Is DTC detected?
YES >> Refer to HAC-99, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006275934
1.CHECK REAR AIR MIX DOOR MOTOR COMMUNICATION SIGNAL
1. Turn ignition switch ON.
2. Check output waveform between rear air mix door motor harness connector \
and ground with the oscillo- scope.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK INSTALLATION OF REAR AIR MIX DOOR MOTOR
Check rear air mix door motor is properly installed. Refer to HAC-152, "
Exploded View".
Is the inspection result normal?
YES >> Replace rear air mix door motor. Refer to HAC-154, "REAR AIR MIX DOOR MOTOR : Removal
and Installation".
NO >> Repair or replace malfunctioning part.
DTC Items
(CONSULT-III screen terms) DTC detection condition Possible cause
B2664
REAR AIR MIX DOOR MOT Rear air mix door motor PBR position
95% or more
 Rear air mix door motor
(PBR internal circuit is open or short-
ed)
 Rear air mix door motor installation
condition
 A/C auto amp.
 Harness and connector (LIN communication line is open or
shorted)
B2665
Rear air mix door motor PBR position
5% or less
+
−Output waveform
Rear air mix door motor
Connector Terminal
B210 3 Ground
SJIA1453J
Revision: 2010 May2011 QX56