sensor INFINITI QX56 2011 Factory Service Manual

DLK-160
< DTC/CIRCUIT DIAGNOSIS >
TOUCH SENSOR
3. Check voltage between touch sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK TOUCH SENSOR LH CIRCUIT
1. Disconnect automatic back door control module connector.
2. Check continuity between automatic back door c ontrol module harness connector and touch sensor LH
harness connector.
3. Check continuity between automatic back door control module harness connector and ground.
Is the inspection result normal?
YES >> Replace automatic back door control module. Refer to DLK-262, "Removal and Installation".
NO >> Repair or replace harness.
3.CHECK TOUCH SENSOR LH GROUND CIRCUIT
Check continuity between automatic back door contro l module harness connector and touch sensor LH har-
ness connector.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK TOUCH SENSOR LH
Refer to DLK-160, "
LH : Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace touch sensor LH.
5.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
LH : Component InspectionINFOID:0000000006225988
1.CHECK TOUCH SENSOR LH
1. Turn ignition switch OFF.
2. Disconnect touch sensor LH connector.
(+)
(–)Voltag e
(Approx.)
Touch sensor LH
Connector Terminal D107 1 Ground 6 V
Automatic back door control module Touch sensor LH Continuity
Connector Terminal Connector Terminal
B26 14 D107 1 Existed
Automatic back door control module GroundContinuity
Connector Terminal
B26 14 Not existed
Automatic back door control module Touch sensor LH Continuity
Connector Terminal Connector Terminal
B26 15 D107 2 Existed
Revision: 2010 May2011 QX56

TOUCH SENSORDLK-161
< DTC/CIRCUIT DIAGNOSIS >
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3. Check continuity between touch sensor LH terminals.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace touch sensor LH.
Touch sensor LH ConditionResistance
(Approx.)
Te r m i n a l
1 2 Touch sensor LH Detect obstruction 120
Ω or less
Other than above 1 k Ω ± 10%
Revision: 2010 May2011 QX56

KEY REMINDER FUNCTION DOES NOT OPERATEDLK-185
< SYMPTOM DIAGNOSIS >
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KEY REMINDER FUNCTION DOES NOT OPERATE
Diagnosis ProcedureINFOID:0000000006226023
1.CHECK “ANTI KEY LOCK IN FUNCT I” SETTING IN “WORK SUPPORT”
1. Select “INTELLIGENT KEY” of “BCM” using CONSULT-III.
2. Select “ANTI KEY LOCK IN F UNCTI” in “WORK SUPPORT” mode.
3. Check “ANTI KEY LOCK IN FUNCT I” setting in “WORK SUPPORT”.
Refer to DLK-41, "
INTELLIGENT KEY : CONSULT-III Function (BCM - INTELLIGENT KEY)".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Set “On” in “ANTI KEY LOCK IN FUNCTI”.
2.CHECK INSIDE KEY ANTENNA
Check inside key antenna.
 Instrument center: Refer to DLK-104, "
DTC Logic".
 Console: Refer to DLK-106, "
DTC Logic".
 Luggage room: Refer to DLK-108, "
DTC Logic".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the malfunctioning parts.
3.CHECK UNLOCK SENSOR
Check unlock sensor.
Refer to DLK-130, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunctioning parts.
4.REPLACE BCM
 Replace BCM. Refer to BCS-81, "
Removal and Installation".
 Confirm the operation after replacement.
Is the result normal?
YES >> INSPECTION END
NO >> Check intermittent incident. Refer to GI-40, "
Intermittent Incident".
Revision: 2010 May2011 QX56

DLK-198
< SYMPTOM DIAGNOSIS >
AUTOMATIC BACK DOOR OPERATION DOES NOT OPERATE
AUTOMATIC BACK DOOR OPERATION DOES NOT OPERATE
ALL SWITCHES
ALL SWITCHES : DescriptionINFOID:0000000006226037
Automatic back door open/close function does not operate using all switches.
NOTE:
Automatic back door open/close operation condition is ex tremely complicated, during operating confirmations,
reconfirm the list above twice in order to ensure proper operation. Refer to DLK-31, "
System Description".
ALL SWITCHES : Diagnosis ProcedureINFOID:0000000006226038
1.CHECK DTC WITH AUTOMATIC BACK DOOR CONTROL MODULE
Check that DTC is not detected with automatic back door control module.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Perform trouble diagnosis relevant to DTC indicated.
2.CHECK BACK DOOR AUTO CLOSURE FUNCTION
Check back door auto closure function.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Refer to DLK-201, "
OPEN/CLOSURE FUNCTION : Diagnosis Procedure".
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check automatic back door control module power supply and ground circuit.
Refer to DLK-116, "
AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunctioning parts.
4.CHECK GROUND CIRCUIT
Check automatic back door control module ground circuit.
Refer to DLK-165, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace the malfunctioning parts.
5.CHECK TOUCH SENSOR LH
Check touch sensor LH.
Refer to DLK-159, "
LH : ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace the malfunctioning parts.
6.CHECK TOUCH SENSOR RH
Check touch sensor RH.
Refer to DLK-158, "
RH : ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace the malfunctioning parts.
7.REPLACE AUTOMATIC BACK DOOR CONTROL MODULE
1. Replace automatic back door control module. Refer to DLK-262, "
Removal and Installation".
2. Confirm the operation after replacement.
Is the result normal?
YES >> INSPECTION END
Revision: 2010 May2011 QX56

AUTOMATIC BACK DOOR ANTI-PINCH FUNCTION DOES NOT OPERATE
DLK-207
< SYMPTOM DIAGNOSIS >
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AUTOMATIC BACK DOOR ANTI-PINCH FUNCTION DOES NOT OPERATE
Diagnosis ProcedureINFOID:0000000006226058
1.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check automatic back door control module power supply and ground circuit.
Refer to DLK-116, "
AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the malfunctioning parts.
2.CHECK TOUCH SENSOR LH
Check touch sensor LH.
Refer to DLK-159, "
LH : ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the malfunctioning parts.
3.CHECK TOUCH SENSOR RH
Check touch sensor RH.
Refer to DLK-158, "
RH : ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunctioning parts.
4.REPLACE AUTOMATIC BACK DOOR CONTROL MODULE
1. Replace automatic back door control module. Refer to DLK-262, "
Removal and Installation".
2. Confirm the operation after replacement.
Is the result normal?
YES >> INSPECTION END
NO >> Check intermittent incident. Refer to GI-40, "
Intermittent Incident".
Revision: 2010 May2011 QX56

DLK-220
< REMOVAL AND INSTALLATION >
RADIATOR CORE SUPPORT
RADIATOR CORE SUPPORT
Exploded ViewINFOID:0000000006226068
Removal and InstallationINFOID:0000000006226069
RADIATOR CORE SUPPORT UPPER
Removal
CAUTION:
When removing radiator core support upper, be careful not to damage the painted surface.
1. Remove bumper molding, bumper molding stay LH and RH. Refer to EXT-13, "
Removal and Installation".
2. Remove fixing clips, and then radiator upper seal.
3. Remove horn (LOW and HIGH). Refer to HRN-6, "
Removal and Installation".
4. Remove exhaust gas / outside oder sensor. Refer to HAC-151, "
Removal and Installation".
5. Disconnect refrigerant pressu re sensor harness connector.
1. Radiator upper seal 2. Radiator core support upper 3. Air guide seal LH
4. Air guide seal RH 5. Radiator side seal RH 6. Radiator lower seal RH
7. Radiator lower seal LH 8. Radiator side seal LH 9. Radiator core support main
Refer to for symbols in the figure.GI-4, "
Components"
JMKIA5479GB
Revision: 2010 May2011 QX56

RADIATOR CORE SUPPORTDLK-221
< REMOVAL AND INSTALLATION >
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6. Disconnect all harness clips.
7. Remove hood lock assembly. Refer to DLK-238, "
Removal and Installation".
8. Remove fixing clips of air guide seal.
9. Remove mounting bolts, and then remove power steering oil cooler. Refer to ST-54, "
Exploded View".
CAUTION:
Put a wooden block (A) under the oil cooler (1) to prevent
the oil cooler from falling.
10. Remove radiator mounting bolts. Refer to CO-13, "
Removal and Installation".
11. Remove mounting bolts, and then radiator core support upper.
Installation
Note the following items, and then install in the reverse order of removal.
CAUTION:
 If aluminum plate remains to the body side when removing radiator core support upper, be sure to
pinch aluminum plate between radiator core support upper and hoodledge upper when installing
radiator core support upper, for preventing electric corrosion.
 When installing radiator core support upper, be careful not to damage the painted surface.
RADIATOR CORE SUPPORT LOWER
Removal
1. Remove front bumper fascia, bumper retainer and Bumper retainer bracket CTR. Refer to EXT-13,
"Removal and Installation".
2. Remove fixing clips, and then air guide seal and radiator side seal.
3. Remove ambient sensor. Refer to HAC-147, "
Removal and Installation".
4. Remove crash zone sensor. Refer to SR-22, "
Removal and Installation".
5. Remove all harness clips.
6. Remove mounting bolts, and then remove radiator core support main.
Installation
Install in the reverse order of removal.
JMKIA5480ZZ
Revision: 2010 May2011 QX56

DLK-246
< REMOVAL AND INSTALLATION >
BACK DOOR LOCK
BACK DOOR LOCK
Exploded ViewINFOID:0000000006226105
DOOR LOCK
DOOR LOCK : Removal and InstallationINFOID:0000000006226106
REMOVAL
1. Remove back door finisher lower. Refer to INT-39, "Removal and Installation".
2. Disconnect back door lock assembly harness connector.
3. Remove back door lock mounting bolts, and then remove back door lock assembly.
INSTALLATION
Note the following item, and then install in the reverse order of removal.
CAUTION:
Check back door open/close, lock/unlo ck operation after installation.
TOUCH SENSOR
TOUCH SENSOR : Removal and InstallationINFOID:0000000006226107
CAUTION:
Take care not to bend touch sensor.
REMOVAL
1. Remove back door finisher side. Refer to INT-39, "Removal and Installation".
2. Disconnect touch sensor connector.
1. Back door support rod 2. Touch sensor 3. Automatic back door control module
4. Back door lock assembly 5. Back door assembly 6. Stud ball
7. Screw grommet
Refer to GI-4, "
Components" for symbols in the figure.
JMKIA5484GB
Revision: 2010 May2011 QX56

BACK DOOR LOCKDLK-247
< REMOVAL AND INSTALLATION >
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3. Remove clips and TORX screws of touch sensor.
4. Pull harness of touch sensor out of back door and remove touch sensor.
INSTALLATION
Note the following item, and then install in the reverse order of removal.
CAUTION:
Check back door open/close operation after installation.
BACK DOOR SUPPORT ROD
BACK DOOR SUPPORT ROD : Removal and InstallationINFOID:0000000006226108
REMOVAL
1. Remove cap of back door finisher side (LH). Refer to INT-39, "Exploded View".
2. Remove stud ball (1) of back door support rod (3) from back door assembly (2).
3. Remove automatic back door control module. Refer to DLK-262, "
Removal and Installation".
NOTE:
When replacing back door support rod, replace stud ba ll and automatic back door control module as a set,
since back door support rod is engaged and connected to stud ball and automatic back door control mod-
ule.
INSTALLATION
Note the following items, and then install in the reverse order of removal.
CAUTION:
 When reusing stud ball, always a pply locking sealant before installing stud ball to back door.
 Check back door open/close opera tion after installation.
EMERGENCY LEVER
EMERGENCY LEVER : Unlock proceduresINFOID:0000000006226109
UNLOCK PROCEDURES
NOTE:
If back door lock cannot be unlocked due to a malfuncti on or battery discharge, follow the procedures to
unlock back door.
1. Remove the emergency handle mask. Refer to INT-39, "
Exploded View".
2. From inside the vehicle, rotate emergency lever toward lower direction and unlock.
JMKIA5442ZZ
JMKIA5264ZZ
Revision: 2010 May2011 QX56

DLK-252
< REMOVAL AND INSTALLATION >
CAB MOUNTING INSULATOR
 Drain brake fluid from brake line. Refer to BR-10, "Draining".
 Release fuel pressure. Refer to EC-153, "
Work Procedure".
 Disconnect both battery cables. Refer to PG-164, "
Removal and Installation".
 Drain engine coolant from radiator. Refer to CO-8, "
Draining".
 Discharge refrigerant from A/C circuit. Refer to HA-20, "
Recycle Refrigerant".
 Drain power steering fluid from reservoir tank.
4. Remove parts relating to connection of body assembly and frame assembly.  Tire and wheel: Refer to WT-64, "
Removal and Installation" (with TPMS).
 Front fender protector (LH and RH): Refer to EXT-23, "
FENDER PROTECTOR : Removal and Installa-
tion".
 Front bumper: Refer to EXT-13, "
Removal and Installation".
 Radiator core support upper: Refer to DLK-220, "
Removal and Installation".
 Fan shroud: Refer to CO-16, "
Removal and Installation".
 Battery and battery case: Refer to PG-164, "
Removal and Installation".
 Air cleaner case (upper and lower): Refer to EM-27, "
Removal and Installation".
 Engine cover: Refer to EM-25, "
Removal and Installation".
 Rear wheel house protector (LH and RH): EXT-24, "
REAR WHEEL HOUSE PROTECTOR : Removal
and Installation".
 Rear bumper: Refer to EXT-17, "
Removal and Installation".
 Fuel filler tube: Remove to FL-8, "
Exploded View".
 Spare tire
 Towing hook bracket.
5. Separate parts relating to connection of body assembly and frame assembly. Vehicle front
 Disconnect ICC sensor connector. (models with ICC) Refer to CCS-176, "
Removal and Installation".
 Remove radiator upper hose and radiator lower hose from radiator assembly. Refer to CO-13,
"Exploded View".
 Remove A/T fluid cooler hose B and A/T fluid cooler hose E from A/T fluid cooler tubes. Refer to TM-
202, "Exploded View".
 Remove power steering return hose from oil cooler, and then power steering return hose clamp bolt from frame assembly. Refer to ST-54, "
Exploded View".
 Remove power steering suction hose from reservoir tank. Refer to ST-54, "
Exploded View".
CAUTION:
Never spill power steering fluid in engine room.
 Remove A/C low-presser flexible hose from A/C low-presser pipe. Refer to HA-35, "
LOW-PRESSURE
FLEXIBLE HOSE : Removal and Installation".
 Remove A/C hi-presser flexible hose from condenser. Refer to HA-34, "
HIGH-PRESSURE FLEXIBLE
HOSE : Removal and Installation".
 Remove all engine Control Harness connectors, har ness clips and others that are connected to the
body assembly side of the engine room. (engine room LH and RH side). Refer to PG-148, "
Engine Con-
trol Harness".
NOTE:
Separate harness connectors from ECM (engine control module). Refer to EC-10, "
General Precau-
tions".
CAUTION:
 When pulling out harnesses, never damage harnesses or connectors.
 After temporarily securing connectors, cover th em with vinyl or similar material to protect
against adhesion of foreign materials.
 Disconnect engine room harness connectors and remo ve harness clips from engine assembly (engine
RH side). Refer to PG-146, "
Engine Room Harness".
 Remove heater hoses from front water outlet tube (engine room RH side). Refer to HA-33, "
Exploded
View".
 Disconnect front wheel sensor connectors (LH and RH). Refer to BRC-134, "
FRONT WHEEL SENSOR
: Exploded View".
 Disconnect fuel feed tube and EVAP hos e (front wheel well LH side).
 Remove steering lower shaft from steering gear side assembly. Refer to ST-37, "
Removal and Installa-
tion"
CAUTION:
Spiral cable may be cut if steering wheel turns while separating steering column assembly and
steering gear assembly.
Revision: 2010 May2011 QX56