ground INFINITI QX56 2011 Factory Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2011, Model line: QX56, Model: INFINITI QX56 2011Pages: 5598, PDF Size: 94.53 MB
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![INFINITI QX56 2011 Factory Service Manual
B2667, B2668 SUNLOAD SENSOR (PASSENGER SIDE)
HAC-103
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
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B2667, B2668 SUNLOAD SENS OR (PASSENGER SIDE)
DTC LogicIN](/img/42/57033/w960_57033-3208.png "INFINITI QX56 2011 Factory Service Manual
B2667, B2668 SUNLOAD SENSOR (PASSENGER SIDE)
HAC-103
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
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B2667, B2668 SUNLOAD SENS OR (PASSENGER SIDE)
DTC LogicIN")
B2667, B2668 SUNLOAD SENSOR (PASSENGER SIDE)
HAC-103
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
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B2667, B2668 SUNLOAD SENS OR (PASSENGER SIDE)
DTC LogicINFOID:0000000006275937
DTC DETECTION LOGIC
NOTE:
If DTC is displayed along with DTC U1000, first per form the trouble diagnosis for DTC U1000. Refer to HAC-
72, "DTC Logic".
If DTC is displayed along with DTC U1010, fi rst perform the trouble diagnosis for DTC U1010. HAC-73,
"DTC Logic".
Sunload sensor may register a malfunction when indoors, at dusk, or at other times when light is insufficient.
When performing the diagnosis indoors, use a lamp (60 W or more) that is pointed at the sunload sensor.
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-103, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006275938
1.CHECK SUNLOAD SENSOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect sunload sensor connector.
3. Turn ignition switch ON.
4. Check voltage between sunload sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK SUNLOAD SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between sunload sensor harnes s connector and A/C auto amp. harness connector.
DTCItems
(CONSULT-III screen terms) DTC detection condition Possible cause
B2667 PASS SUNLOAD SENSOR Detected calorie at sunload sensor (passenger
side) 2832 W/m
2 (2436 kcal/m2·h) or more.
Sunload sensor
A/C auto amp.
Harness or connectors
[The sensor circuit (passenger
side) is open or shorted.]
B2668
Detected calorie at sunload sensor (passenger
side) 64.7 W/m
2 (55.6 kcal/m2·h) or less.
+
−Vol tag e
(Approx.)
Sunload sensor
Connector Terminal M74 1 Ground 5 V
Sunload sensor —Continuity
Connector Terminal
M74 3 Ground Existed
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Service Manual
HAC-104
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
B2667, B2668 SUNLOAD SENS
OR (PASSENGER SIDE)
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK](/img/42/57033/w960_57033-3209.png "INFINITI QX56 2011 Factory Service Manual
HAC-104
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
B2667, B2668 SUNLOAD SENS
OR (PASSENGER SIDE)
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK")
HAC-104
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
B2667, B2668 SUNLOAD SENS
OR (PASSENGER SIDE)
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK SUNLOAD SENSOR
Check sunload sensor. Refer to HAC-104, "
Component Inspection".
Is the inspection result normal?
YES >> Replace A/C auto amp.. Refer to HAC-146, "Removal and Installation".
NO >> Replace sunload sensor. Refer to HAC-149, "
Removal and Installation".
4.CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between sunload sensor harne ss connector and A/C auto amp. harness connector.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair harness or connector.
5.CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR GROUND SHORT
Check continuity between sunload sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair harness or connector.
6.CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR POWER SHORT
1. Turn ignition switch ON.
2. Check voltage between sunload sensor harness connector and ground.
Is the inspection result normal?
YES >> Replace A/C auto amp.. Refer to HAC-146, "Removal and Installation".
NO >> Repair harness or connector.
Component InspectionINFOID:0000000006275939
1.CHECK SUNLOAD SENSOR
1. Turn ignition switch OFF.
2. Reconnect sunload sensor connector and A/C auto amp. connector.
3. Turn ignition switch ON.
4. Check input voltage from sunload sensor between A/C auto amp. harness connector and ground. Refer to
applicable table for normal value.
Sunload sensor A/C auto amp. Continuity
Connector Terminal Connector Terminal
M74 1 M50 29 Existed
Sunload sensor —Continuity
Connector Terminal
M74 1 Ground Not existed
+ −Voltage
(Approx.)
Sunload sensor
Connector Terminal M74 1 Ground 0 V
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Service Manual
B2667, B2668 SUNLOAD SENSOR (PASSENGER SIDE)
HAC-105
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
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NOTE:
When checking indoors, use a lamp of approximatel](/img/42/57033/w960_57033-3210.png "INFINITI QX56 2011 Factory Service Manual
B2667, B2668 SUNLOAD SENSOR (PASSENGER SIDE)
HAC-105
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
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NOTE:
When checking indoors, use a lamp of approximatel")
B2667, B2668 SUNLOAD SENSOR (PASSENGER SIDE)
HAC-105
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
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NOTE:
When checking indoors, use a lamp of approximately 60 W. Move the lamp towards and away from the
sensor to check.
The sunload amount produced by direct sunshine in fa ir weather is equivalent to approximately 0.770
kW/m
2 (662 kcal/m2·h).
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace sunload sensor. Refer to HAC-149, "
Removal and Installation".
+
−
A/C auto amp.
Connector Terminal M50 29 Ground
JPIIA1659GB
Revision: 2010 May2011 QX56
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HAC-106
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
B266B, B266C REAR IN-VEHICLE SENSOR
B266B, B266C REAR IN-VEHICLE SENSOR
DTC LogicINFOID:0000000006275940
DTC DETECTION LOGIC
NOTE:
If](/img/42/57033/w960_57033-3211.png "INFINITI QX56 2011 Factory Service Manual
HAC-106
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
B266B, B266C REAR IN-VEHICLE SENSOR
B266B, B266C REAR IN-VEHICLE SENSOR
DTC LogicINFOID:0000000006275940
DTC DETECTION LOGIC
NOTE:
If")
HAC-106
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
B266B, B266C REAR IN-VEHICLE SENSOR
B266B, B266C REAR IN-VEHICLE SENSOR
DTC LogicINFOID:0000000006275940
DTC DETECTION LOGIC
NOTE:
If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
HAC-
72, "DTC Logic".
If DTC is displayed along with DTC U1010, fi rst perform the trouble diagnosis for DTC U1010. HAC-73,
"DTC 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-106, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006275941
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-vehi cle sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK REAR IN-VEHCLE SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check continuity between rear in-v ehicle sensor harness connector and ground.
Is the inspection result normal?
DTC Items
(CONSULT-III screen terms) DTC detection condition Possible cause
B266B REAR IN-VEHICLE SEN The rear in-vehicle sensor recognition tempera-
ture is too high.
Rear in-vehicle sensor
A/C auto amp.
Harness or connectors
(The sensor circuit is open or short-
ed.)
B266C
The rear in-vehicle sensor recognition tempera-
ture is too low.
+
−Voltage
(Approx.)
Rear in-vehicle sensor
Connector Terminal B211 1 Ground 5 V
Rear in-vehicle sensor —Continuity
Connector Terminal
B211 2 Ground Existed
Revision: 2010 May2011 QX56
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B266B, B266C REAR IN-VEHICLE SENSORHAC-107
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
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YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK REAR IN-](/img/42/57033/w960_57033-3212.png "INFINITI QX56 2011 Factory Service Manual
B266B, B266C REAR IN-VEHICLE SENSORHAC-107
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
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YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK REAR IN-")
B266B, B266C REAR IN-VEHICLE SENSORHAC-107
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
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YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK REAR IN-VEHICLE SENSOR
Check rear in-vehicle sensor. Refer to HAC-107, "
Component Inspection".
Is the inspection result normal?
YES >> Replace A/C auto amp.. Refer to HAC-146, "Removal and Installation".
NO >> Replace rear in-vehicle sensor. Refer to HAC-148, "
REAR A/C UNIT ASSEMBLY : Removal and
Installation".
4.CHECK REAR IN-VEHCLE 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 sens or harness connector and A/C auto amp. harness connec-
tor.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair harness or connector.
5.CHECK REAR IN-VEHCLE SENSOR PO WER SUPPLY CIRCUIT FOR GROUND SHORT
Check continuity between rear in-v ehicle 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 PO WER 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 HAC-146, "Removal and Installation".
NO >> Repair harness or connector.
Component InspectionINFOID:0000000006275942
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.
Rear in-vehicle sensor A/C auto amp. Continuity
Connector Terminal Connector Terminal
B211 1 M50 8 Existed
Rear in-vehicle sensor —Continuity
Connector Terminal
B211 1 Ground Not existed
+ −Vol tag e
(Approx.)
Rear in-vehicle sensor
Connector Terminal B211 1 Ground 0 V
Revision: 2010 May2011 QX56
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HAC-110
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
A/C AUTO AMP.
A/C AUTO AMP. : Diagnosis ProcedureINFOID:0000000006275948](/img/42/57033/w960_57033-3215.png "INFINITI QX56 2011 Factory Service Manual
HAC-110
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
A/C AUTO AMP.
A/C AUTO AMP. : Diagnosis ProcedureINFOID:0000000006275948")
HAC-110
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
A/C AUTO AMP.
A/C AUTO AMP. : Diagnosis ProcedureINFOID:0000000006275948
1.CHECK FUSE
Check 10A fuse [No. 9, 19, and 4, located in the fuse block (J/B)].
NOTE:
Refer to PG-140, "
Fuse, Connector and Terminal Arrangement".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.CHECK A/C AUTO AMP. POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect A/C auto amp. connector.
3. Check voltage between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector between A/C auto amp. and fuse block (J/B).
3.CHECK A/C AUTO AMP. GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair harness or connector.
FRONT AIR MIX DOOR MOTOR (DRIVER SIDE)
FRONT AIR MIX DOOR MOTOR (DRI VER SIDE) : Diagnosis ProcedureINFOID:0000000006275949
1.CHECK FRONT AIR MIX DOOR MOTO R (DRIVER SIDE) POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between front air mix door motor LH harness connector and ground.
+
− Vo l ta g e
A/C auto amp. Ignition switch position
Connector Terminal OFF ACC ON
M50 4
Ground Approx. 0 V Battery voltage Battery voltage
23 Approx. 0 V Approx. 0 V Battery voltage 3 Battery voltage Battery voltage Battery voltage
A/C auto amp. —Continuity
Connector Terminal
M50 2
Ground Existed
22
37
Revision: 2010 May2011 QX56
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POWER SUPPLY AND GROUND CIRCUITHAC-111
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Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK](/img/42/57033/w960_57033-3216.png "INFINITI QX56 2011 Factory Service Manual
POWER SUPPLY AND GROUND CIRCUITHAC-111
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
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Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK")
POWER SUPPLY AND GROUND CIRCUITHAC-111
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
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Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK FRONT AIR MIX DOOR MOTOR (DRIVER SIDE) GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front air mix door motor LH connector.
3. Check continuity between front air mix door motor LH harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK INSTALLATION OF FRONT AI R MIX DOOR MOTOR (DRIVER SIDE)
Check front air mix door motor (driver side) is properly installed. Refer to HAC-152, "
Exploded View".
Is the inspection result normal?
YES >> Replace front air mix door motor (driver side). Refer to HAC-153, "AIR MIX DOOR MOTOR :
Removal and Installation".
NO >> Repair or replace malfunctioning part.
4.CHECK FRONT AIR MIX DOOR MOTOR (DRIVER SIDE) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front air mix door motor LH connector and A/C auto amp. connector.
3. Check continuity between front air mix door moto r LH harness connector and A/C auto amp. 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 MO TOR (PASSENGER SIDE)
FRONT AIR MIX DOOR MOTOR (PASSEN GER SIDE) : Diagnosis Procedure
INFOID:0000000006275950
1.CHECK FRONT AIR MIX DOOR MOTOR (PASSENGER SIDE) POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between front air mix door motor RH harness connector and ground.
+
−Vol tag e
(Approx.)
Front air mix door motor LH
Connector Terminal M252 1 Ground 12 V
Front air mix door motor LH —Continuity
Connector Terminal
M252 2 Ground Existed
Front air mix door motor LH A/C auto amp. Continuity
Connector Terminal Connector Terminal
M252 1 M50 17 Existed
+ −Vol tag e
(Approx.)
Front air mix door motor RH
Connector Terminal M255 1 Ground 12 V
Revision: 2010 May2011 QX56
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HAC-112
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK FRONT AIR MIX DOOR MOTO
R (PASSEN](/img/42/57033/w960_57033-3217.png "INFINITI QX56 2011 Factory Service Manual
HAC-112
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK FRONT AIR MIX DOOR MOTO
R (PASSEN")
HAC-112
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK FRONT AIR MIX DOOR MOTO
R (PASSENGER SIDE) GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front air mix door motor RH connector.
3. Check continuity between front air mi x door motor RH harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK INSTALLATION OF FRONT AIR MIX DOOR MOTOR (PASSENGER SIDE)
Check front air mix door motor (passenger side) is properly installed. Refer to HAC-152, "
Exploded View".
Is the inspection result normal?
YES >> Replace front air mix door motor (passenger side). Refer to HAC-153, "AIR MIX DOOR MOTOR :
Removal and Installation".
NO >> Repair or replace malfunctioning part.
4.CHECK FRONT AIR MIX DOOR MOTOR (P ASSENGER SIDE) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front air mix door motor RH connector 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 MODE DOOR MOTOR
FRONT MODE DOOR MOTOR : Diagnosis ProcedureINFOID:0000000006275951
1.CHECK FRONT MODE DOOR MOTOR POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between front mode door motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK FRONT MODE DOOR MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front mode door motor connector.
Front air mix door motor RH —Continuity
Connector Terminal
M255 2 Ground Existed
Front air mix door motor RH A/C auto amp. Continuity
Connector Terminal Connector Terminal
M255 1 M50 17 Existed
+ −Voltage
(Approx.)
Front mode door motor
Connector Terminal M253 1 Ground 12 V
Revision: 2010 May2011 QX56
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POWER SUPPLY AND GROUND CIRCUITHAC-113
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
C
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3. Check continuity between front mode door motor harness connector and](/img/42/57033/w960_57033-3218.png "INFINITI QX56 2011 Factory Service Manual
POWER SUPPLY AND GROUND CIRCUITHAC-113
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
C
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M A
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HAC
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3. Check continuity between front mode door motor harness connector and")
POWER SUPPLY AND GROUND CIRCUITHAC-113
< DTC/CIRCUIT DIAGNOSIS > [AUTOMATIC AIR CONDITIONING]
C
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HAC
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3. Check continuity between front mode door motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.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".
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.
4.CHECK FRONT MODE DOOR MOTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front mode door motor connector 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.
INTAKE DOOR MOTOR
INTAKE DOOR MOTOR : Diagnosis ProcedureINFOID:0000000006275952
1.CHECK INTAKE MODE DOOR MOTOR POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between intake mode door motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK INTAKE MODE DOOR MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake mode door motor connector.
3. Check continuity between intake mode door motor harness connector and ground.
Front mode door motor —Continuity
Connector Terminal
M253 2 Ground Existed
Front mode door motor A/C auto amp. Continuity
Connector Terminal Connector Terminal
M253 1 M50 17 Existed
+ −Vol tag e
(Approx.)
Intake mode door motor
Connector Terminal M254 1 Ground 12 V
Intake mode door motor —Continuity
Connector Terminal
M254 2 Ground Existed
Revision: 2010 May2011 QX56
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HAC-114
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK INSTALLATION](/img/42/57033/w960_57033-3219.png "INFINITI QX56 2011 Factory Service Manual
HAC-114
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK INSTALLATION")
HAC-114
< DTC/CIRCUIT DIAGNOSIS >[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK INSTALLATION OF INTAKE MO
DE DOOR MOTOR CONTROL LINKAGE
Check intake mode door motor control linkage is properly installed. Refer to HAC-152, "
Exploded View".
Is the inspection result normal?
YES >> Replace intake mode door motor. Refer to HAC-153, "INTAKE DOOR MOTOR : Removal and
Installation".
NO >> Repair or replace malfunctioning part.
4.CHECK INTAKE MODE DOOR MOTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect intake mode door motor connector and A/C auto amp. connector.
3. Check continuity between intake mode door mo tor harness connector and A/C auto amp. 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.
REAR AIR MIX DOOR MOTOR
REAR AIR MIX DOOR MOTO R : Diagnosis ProcedureINFOID:0000000006275953
1.CHECK REAR AIR MIX DOOR MOTOR POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between rear air mix door motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK REAR AIR MIX DOOR MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear air mix door motor connector.
3. Check continuity between rear air mix door motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK INSTALLATION OF REAR AIR MIX DOOR MOTOR
Check rear air mix door motor is properly installed. Refer to HAC-152, "
Exploded View".
Intake mode door motor A/C auto amp.
Continuity
Connector Terminal Connector Terminal
M254 1 M50 17 Existed
+ −Voltage
(Approx.)
Rear air mix door motor
Connector Terminal B210 1 Ground 12 V
Rear air mix door motor —Continuity
Connector Terminal
B210 2 Ground Existed
Revision: 2010 May2011 QX56