air condition INFINITI QX56 2010 Factory Service Manual

REAR POWER VENT WINDOW MOTOR LH CIRCUIT CHECK
PWC-45
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REAR POWER VENT WINDOW MOTOR LH CIRCUIT CHECK
DescriptionINFOID:0000000005147228
Rear power vent windows OPEN/CLOSE by receiving the signal from rear power vent window switch.
Diagnosis ProcedureINFOID:0000000005147229
Regarding Wiring Diagram information, refer to PWC-53, "Wiring Diagram".
1. CHECK REAR POWER VENT WINDOW LH SIGNAL
1. Turn ignition switch OFF.
2. Disconnect rear power vent window motor LH.
3. Turn ignition switch ON.
4. Check voltage between rear power vent window motor LH con- nector B52 terminals 1, 2 and ground.
Is the inspection result normal?
YES >> Replace rear power vent window motor LH. Refer to GW-21, "Removal and Installation".
NO >> Repair or replace harness.
Connector Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
B52 1
Ground Opening Battery voltage
Closing 0
2 Opening
0
Closing Battery voltage
ALKIA1037GB
Revision: April 20092010 QX56

PWC-46
< COMPONENT DIAGNOSIS >
REAR POWER VENT WINDOW MOTOR RH CIRCUIT CHECK
REAR POWER VENT WINDOW MOTOR RH CIRCUIT CHECK
DescriptionINFOID:0000000005147230
Rear power vent windows OPEN/CLOSE by receiving the signal from rear power vent window switch.
Diagnosis ProcedureINFOID:0000000005147231
Regarding Wiring Diagram information, refer to PWC-53, "Wiring Diagram".
1.CHECK REAR POWER VENT WINDOW SWITCH RH SIGNAL
1. Turn ignition switch OFF.
2. Disconnect rear power vent window motor RH.
3. Turn ignition switch ON.
4. Check voltage between rear power vent window motor LH con- nector B150 terminals 1, 2 and ground.
Is the inspection result normal?
YES >> Replace rear power vent window motor RH. Refer to GW-21, "Removal and Installation".
NO >> Repair or replace harness.
Connector Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
B150 1
Ground Opening Battery voltage
Closing 0
2 Opening
0
Closing Battery voltage
ALKIA1037GB
Revision: April 20092010 QX56

REAR POWER VENT WINDOW RELAY (OPEN) CHECK
PWC-47
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REAR POWER VENT WINDOW RELAY (OPEN) CHECK
DescriptionINFOID:0000000005147232
Rear power vent windows OPEN/CLOSE by receiving the signal from rear power vent window switch.
Diagnosis ProcedureINFOID:0000000005147233
Regarding Wiring Diagram information, refer to PWC-53, "Wiring Diagram".
1.CHECK REAR POWER VENT WINDOW RELAY (OPEN) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power vent window relay (OPEN).
3. Turn ignition switch ON.
4. Check voltage between rear power vent window relay (OPEN) connector and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace harness.
2.CHECK REAR POWER VENT WINDOW RELAY (OPEN)
Check continuity between rear power vent window relay (OPEN) ter-
minals 3 and 4, 3 and 5.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace rear power vent window relay (OPEN).
3.CHECK REAR POWER VENT WINDOW RELAY (OPEN) GROUND CIRCUIT
Check continuity between rear power vent window relay (OPEN)
connector M87 terminal 4 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK REAR POWER VENT WI NDOW RELAY (OPEN) CIRCUIT
ConnectorTe r m i n a l s
Voltage (V)
(Approx.)
(+) (-)
M87 1
Ground Battery voltage
5
LIIA1565E
Terminals Condition Continuity
34 12V direct current supply
between terminals 1 and 2
No
No current supply Yes
35 12V direct current supply
between terminals 1 and 2
Ye s
No current supply No
WIIA0291E
4 - Ground: Continuity should exist.
LIIA1567E
Revision: April 20092010 QX56

REAR POWER VENT WINDOW RELAY (CLOSE) CHECKPWC-49
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REAR POWER VENT WINDOW RELAY (CLOSE) CHECK
DescriptionINFOID:0000000005147234
Rear power vent windows OPEN/CLOSE by receiving the signal from rear power vent window switch.
Diagnosis ProcedureINFOID:0000000005147235
Regarding Wiring Diagram information, refer to PWC-53, "Wiring Diagram".
1.CHECK REAR POWER VENT WINDOW RELAY (CLOSE) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear power vent window relay (CLOSE).
3. Turn ignition switch ON.
4. Check voltage between rear power vent window relay (CLOSE) connector and ground.
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace harness.
2.CHECK REAR POWER VENT WINDOW RELAY (CLOSE)
Check continuity between rear pow er vent window relay (CLOSE)
terminals 3 and 4, 3 and 5.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace rear power vent window relay (CLOSE).
3.CHECK REAR POWER VENT WINDOW RELAY (CLOSE) GROUND CIRCUIT
Check continuity between rear pow er vent window relay (CLOSE)
connector M89 terminal 4 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK REAR POWER VENT WI NDOW RELAY (CLOSE) CIRCUIT
ConnectorTe r m i n a l s
Voltage (V)
(Approx.)
(+) (-)
M89 1
Ground Battery voltage
5
LIIA1565E
Terminals Condition Continuity
34 12V direct current supply
between terminals 1 and 2
No
No current supply Yes
35 12V direct current supply
between terminals 1 and 2
Ye s
No current supply No
WIIA0291E
4 - Ground: Continuity should exist.
LIIA1567E
Revision: April 20092010 QX56

BCM (BODY CONTROL MODULE)PWC-81
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BCM (BODY CONTROL MODULE)
Reference ValueINFOID:0000000005367559
VALUES ON THE DIAGNOSIS TOOL
Monitor Item Condition Value/Status
AIR COND SW A/C switch OFF
OFF
A/C switch ON ON
AUT LIGHT SYS Outside of the room is dark
OFF
Outside of the room is bright ON
AUTO LIGHT SW Lighting switch OFF
OFF
Lighting switch AUTO ON
BACK DOOR SW Back door closed
OFF
Back door opened ON
CARGO LAMP SW Cargo lamp switch OFF
OFF
Cargo lamp switch ON ON
CDL LOCK SW Door lock/unlock switch does not operate
OFF
Press door lock/unlock switch to the LOCK side ON
CDL UNLOCK SW Door lock/unlock switch does not operate
OFF
Press door lock/unlock switch to the UNLOCK side ON
DOOR SW-AS Front door RH closed
OFF
Front door RH opened ON
DOOR SW-DR Front door LH closed
OFF
Front door LH opened ON
DOOR SW-RL Rear door LH closed
OFF
Rear door LH opened ON
DOOR SW-RR Rear door RH closed
OFF
Rear door RH opened ON
ENGINE RUN Engine stopped
OFF
Engine running ON
FR FOG SW Front fog lamp switch OFF
OFF
Front fog lamp switch ON ON
FR WASHER SW Front washer switch OFF
OFF
Front washer switch ON ON
FR WIPER LOW Front wiper switch OFF
OFF
Front wiper switch LO ON
FR WIPER HI Front wiper switch OFF
OFF
Front wiper switch HI ON
FR WIPER INT Front wiper switch OFF
OFF
Front wiper switch INT ON
FR WIPER STOP Any position other than front wiper stop position
OFF
Front wiper stop position ON
HAZARD SW When hazard switch is not pressed
OFF
When hazard switch is pressed ON
Revision: April 20092010 QX56

RF-4
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
1. GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred).
>> GO TO 2
2. CONFIRM THE SYMPTOM
Confirm the symptom described by the customer.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 3
3. PERFORM BASIC INSPECTION
Perform RF-5, "
BASIC INSPECTION : Special Repair Requirement".
Inspection End>>GO TO 4
4. DETECT MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS
Detect malfunctioning system according to symptom diagnosis based on the confirmed symptom in step 4,
and determine the trouble diagnosis order based on possible causes and symptom.
>> GO TO 5
5. DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE
Inspect according to Diagnostic Procedure of the system.
NOTE:
The Diagnostic Procedure described based on open circuit inspection. A short circuit inspection is also
required for the circuit check in the Diagnostic Procedure.
Is malfunctioning part detected?
YES >> GO TO 6
NO >> Check voltage of related BCM terminals using CONSULT-III.
6. REPAIR OR REPLACE THE MALFUNCTIONING PART
1. Repair or replace the malfunctioning part.
2. Reconnect parts or connectors di sconnected during Diagnostic Procedure.
>> GO TO 7
7. FINAL CHECK
When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and check that
the symptom is not detected.
Does the symptom reappear?
YES >> GO TO 5
NO >> Inspection End.
Revision: April 20092010 QX56

INSPECTION AND ADJUSTMENTRF-5
< BASIC INSPECTION >
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INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPL ACING CONTROL UNIT : Description
INFOID:0000000005147269
MEMORY RESET PROCEDURE
1. Please observe the following instructi ons at confirming the sunroof operation.
NOTE:
Do not disconnect the electronic power while the sunroof is operating or within 5 seconds after the sunroof
stops. (to wipe-out the memory of lid position and operating friction.)
2. Initialization of system should be conducted after the following conditions.
• When the sunroof motor is changed.
• When the sunroof does not operate normally. (Incomplete initialization conditions)
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000005147270
INITIALIZATION PROCEDURE
If the sunroof does not close or open automatically, us e the following procedure to return sunroof operation to
normal.
1. Turn ignition switch ON.
2. Push and hold the sunroof tilt switch in the forw ard (DOWN) position until the sunroof is fully closed.
3. After the sunroof has closed all the way, push and hold the tilt switch forward (DOWN) again for more than 2 seconds to re-learn motor position.
4. Initialization is complete if the sunroof operates normally.
BASIC INSPECTION
BASIC INSPECTION : Special Repair RequirementINFOID:0000000005147271
BASIC INSPECTION
1.INSPECTION START
1. Check the service history.
2. Check the following parts.
• Fuse/circuit breaker blown.
• Poor connection, open or short circuit of harness connector.
• Battery voltage.
Is the inspection result normal?
YES >> Inspection End.
NO >> Repair or replace the malfunctioning parts.
Revision: April 20092010 QX56

RF-8
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)INFOID:0000000005370295
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
RETAINED PWR
Diagnosis mode Function Description
WORK SUPPORT Changes the setting for each system function.
SELF-DIAG RESULTS Displays the diagnosis results judged by BCM. Refer to RF-31, "
DTCIndex".
CAN DIAG SUPPORT MNTR Monitors the reception status of CAN communication viewed from BCM.
DATA MONITOR The BCM input/output signals are displayed.
ACTIVE TEST The signals used to activate each device are forcibly supplied from BCM.
ECU IDENTIFICATION The BCM part number is displayed.
CONFIGURATION • Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.
System
Sub system selection item Diagnosis mode
WORK SUPPORT DATA MONITOR ACTIVE TEST
BCM BCM ×
Door lock DOOR LOCK ×××
Rear window defogger REAR DEFOGGER ×
Warning chime BUZZER ××
Interior room lamp timer INT LAMP ×××
Remote keyless entry system MULTI REMOTE ENT ××
Exterior lamp HEAD LAMP ×××
Wiper and washer WIPER ×××
Turn signal and hazard warning lamps FLASHER ××
Air conditioner AIR CONDITONER ×
Intelligent Key system INTELLIGENT KEY ×
Combination switch COMB SW ×
Immobilizer IMMU ××
Interior room lamp battery saver BATTERY SAVER ×××
Back door open TRUNK ××
RAP (retained accessory power) RETAINED PWR ×××
Signal buffer system SIGNAL BUFFER ××
TPMS (tire pressure monitoring sys-
tem) AIR PRESSURE MONITOR
×××
Vehicle security system THEFT ALM ×××
Panic alarm system PANIC ALARM ×
Revision: April 20092010 QX56

POWER SUPPLY AND GROUND CIRCUITRF-11
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1. Connect BCM connector M20.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M20 and ground.
Is the voltage reading as specified?
YES >> Check condition of harness and connector.
NO >> Replace BCM. Refer to BCS-59, "
Removal and Installation".
4. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between sunroof motor assembly connector R4 terminal 7 and ground.
Is the continuity test result as specified?
YES >> Power supply and ground circuits are OK.
NO >> Repair or replace harness.
SUNROOF MOTOR ASSEMBLY : Special Repair RequirementINFOID:0000000005147279
1. PERFORM INITIALIZATION PROCEDURE
Perform initialization procedure.
Refer to RF-5, "
ADDITIONAL SERVICE WHEN REPLACING CO NTROL UNIT : Special Repair Requirement".
Does the sunroof motor assembly operate properly?
YES >> Repair is complete.
NO >> Check fitting adjustment.
(+) (–) Voltage
Connector Terminal
M20 68
Ground Battery voltage
69
ALKIA0871ZZ
Connector Terminal—Continuity
R4 7Ground Yes
ALKIA0869ZZ
Revision: April 20092010 QX56

DOOR SWITCHRF-15
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Is the inspection result normal?
YES >> Door switch circuit is OK.
NO >> GO TO 2
2.CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM.
3. Check continuity between BCM connector (A) M18, M 19 terminals 12, 13, 43, 47, 48 and door switch con-
nector (B) B8 (Front LH), B108 (Front RH), B18 (Rear LH), B116 (Rear RH) terminal 2 or back door latch
connector (C) D503 terminal 7.
4. Check continuity between door switch connector (B) B8 (Front LH), B108 (Front RH), B18 (Rear LH), B116 (Rear RH) terminal
2 or back door latch connector (C) D503 terminal 7 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3.CHECK DOOR SWITCHES
• Disconnect door switch harness.
• Check continuity between door switch connector terminals.
Connec- tor Item Te r m i n a l s
ConditionVoltage (V)
(Approx.)
( + ) ( – )
M19 Back door
switch/latch 43
Ground Open
↓
Closed 0
↓
Battery voltage
Front door
switch LH 47
Rear door switch LH 48
M18 Front door
switch RH 12
Rear door
switch RH 13
LIIA1041E
2 - 47
:Continuity should exist
2 - 12 :Continuity should exist
2 - 48 :Continuity should exist
2 - 13 :Continuity should exist
7 - 43 :Continuity should exist
2 - Ground :Continuity should not exist
7 - Ground :Continuity should not exist
ALKIA0689ZZ
Revision: April 20092010 QX56