2011 INFINITI QX56 air condition

CCS-158
< DTC/CIRCUIT DIAGNOSIS >[ICC]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
ADAS CONTROL UNIT
ADAS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006228002
1.CHECK ADAS CONTROL UNIT POWER SUPPLY CIRCUIT
Check voltage between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the ADAS control unit power supply circuit.
2.CHECK ADAS CONTROL UNIT GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the ADAS control unit connector.
3. Check for continuity between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair the ADAS control unit ground circuit.
ICC SENSOR
ICC SENSOR : Diagnosis ProcedureINFOID:0000000006224439
1.CHECK ICC SENSOR POWER SUPPLY CIRCUIT
Check voltage between ICC sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the ICC sensor power supply circuit.
2.CHECK ICC SENSOR GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the ICC sensor connector.
Te r m i n a l Condition
Voltag e
(Approx.)
(+) (–)
ADAS control unit
GroundIgnition
switch
Connector Terminal
B61 16 OFF 0 V
ON Battery volt-
age
ADAS control unit
GroundContinuity
Connector Terminal
B61 6 Existed
Te r m i n a l Condition
Voltag e
(Approx.)
(+) (–)
ICC sensor
GroundIgnition
switch
Connector Terminal
E65 1 OFF 0 V
ON Battery volt-
age
Revision: 2010 May2011 QX56

CCS-164
< SYMPTOM DIAGNOSIS >[ICC]
ICC STEERING SWITCH (OTHER THAN
MAIN SWITCH) DOES NOT FUNCTION
ICC STEERING SWITCH (OTHER THAN MAIN SWITCH) DOES NOT
FUNCTION
DescriptionINFOID:0000000006224445
MAIN switch can be turned ON/OFF, but the operati on of RESUME/ACCELERATE switch, CANCEL switch,
and DISTANCE switch cannot be performed during ICC system operation.
NOTE:
Resume is not accepted when the following condition is met.
 When the MAIN switch is turned OFF once.
The set distance change is not accepted when any of the following condition is met.
 When the DCA system is turned ON.
Diagnosis ProcedureINFOID:0000000006224446
1.CHECK EACH SWITCH
1. Start the engine.
2. Check that each switch operates normally on “DAT A MONITOR” of “ICC/ADAS” with CONSULT-III.
- “RESUME/ACC SW”
- “CANCEL SW”
- “DISTANCE SW”
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 2.
2.PERFORM ALL OF THE SELF-DIAGNOSIS ITEMS
1. Perform “All DTC Reading”.
2. Check if the “U1000” is detected in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> GO TO 3.
NO >> GO TO 4.
3.CAN COMMUNICATIONS INSPECTION
Check the CAN communication and repair or replace malfunctioning parts. Refer to CCS-145, "
ADAS CON-
TROL UNIT : DTC Logic".
>> INSPECTION END
4.CHECK ICC STEERING SWITCH
Check the ICC steering switch. Refer to CCS-95, "
Component Inspection".
>> GO TO 6.
5.REPLACE ADAS CONTROL UNIT
Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
>> GO TO 6.
6.CHECK ICC SYSTEM
1. Erase the self-diagnosis results, and then perfo rm “All DTC Reading” again after performing the action
test. (Refer to CCS-77, "
Description" for action test.)
2. Check that the ICC system is normal.
>> INSPECTION END
Revision: 2010 May2011 QX56

CCS-166
< SYMPTOM DIAGNOSIS >[ICC]
CHIME DOES NOT SOUND
CHIME DOES NOT SOUND
DescriptionINFOID:0000000006224449
Symptom check: In the following conditions, the warni
ng chime may not sound even if the vehicle distance is
short.
 When the vehicles are traveling at the same s peed and the distance between vehicles is not changing.
 When the vehicle ahead is traveling faster and t he distance between vehicles is increasing.
 The warning chime will not sound when the accelera tor pedal is depressed, overriding the system.
 The warning chime will not sound when own vehicle approaches vehicles that are parked or moving slowly.
 The warning chime does not sound when the system does not detect any vehicle ahead. (Diagnose the con-
ditions under which the system is detecting the vehicle ahead and when the system is malfunctioning. If
there is any malfunction in detecting the v ehicle ahead, check the system following the CCS-169, "
Descrip-
tion".)
Diagnosis ProcedureINFOID:0000000006224450
1.PERFORM ACTIVE TEST
Check if the warning chime sounds on the active test item “ICC BUZZER” of “ICC/ADAS” with CONSULT-III.
Does the warning chime sound?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK THE MALFUNCTION SYMPTOM D URING WARNING CHIME OPERATION
Understand the vehicle ahead detecting condition when the malfunction occurred. If the warning chime should
have sounded, replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
>> GO TO 8.
3.CHECK ICC WARNING CHIME CIRCUIT
Check the meter buzzer circuit. Refer to WCS-40, "
Component Function Check".
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 6.
4.PERFORM THE SELF-DIAGNOSIS
1. Perform “All DTC Reading” with CONSULT-III.
2. Check if the “U1000” is detected in self-diagnosis results of “ICC/ADAS”.
Is
“U1000” detected?
YES >> GO TO 5.
NO >> GO TO 7.
5.CAN COMMUNICATIONS SYSTEM INSPECTION
Check the CAN communication system and repair or replace malfunctioning parts. Refer to CCS-145, "
ADAS
CONTROL UNIT : DTC Logic".
>> INSPECTION END
6.REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts.
>> GO TO 8.
7.REPLACE ADAS CONTROL UNIT
Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
>> GO TO 8.
Revision: 2010 May2011 QX56

CCS-168
< SYMPTOM DIAGNOSIS >[ICC]
DRIVING FORCE IS HUNTING
DRIVING FORCE IS HUNTING
DescriptionINFOID:0000000006224451
The vehicle causes hunting when the ICC system is active.
Diagnosis ProcedureINFOID:0000000006224452
1.PERFORM SELF-DIAGNOSIS OF ECM
1. Perform “All DTC Reading” with CONSULT-III.
2. Check if the DTC is detected in self-diagnosis results of “ENGINE”. Refer to EC-98, "
DTC Index".
Is any DTC detected?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK ICC SENSOR BODY WINDOW
1. Check the vehicle driving conditions. Refer to CCS-169, "
Description".
2. Check the ICC sensor body window for contaminat ion, foreign materials, or cracks. Refer to CCS-169,
"Diagnosis Procedure".
>> INSPECTION END
3.REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts identified by the self-diagnosis result.
>> GO TO 4.
4.CHECK ICC SYSTEM
1. Erase the self-diagnosis results, and then perfo rm “All DTC Reading” again after performing the action
test. (Refer to CCS-77, "
Description" for action test.)
2. Check that the ICC system is normal.
>> INSPECTION END
Revision: 2010 May2011 QX56

CHG-4
< PRECAUTION >
PRECAUTIONS
5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button igniti on switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT-III.
Precaution for Power Generation Vo ltage Variable Control SystemINFOID:0000000006274856
CAUTION:
For this model, the battery current sensor that is in stalled to the battery cable at the negative terminal
measures the charging/discharging curre nt of the battery, and performs various controls. If the electri-
cal component or the ground wire is connected direct ly to the battery terminal, the current other than
that being measured with the battery current sensor is charging to or discharging from the battery.
This condition causes the malfunction of the control, and then the battery discharge may occur. Do
not connect the electrical compon ent or the ground wire directly to the battery terminal.
Revision: 2010 May2011 QX56

CHG-20
< DTC/CIRCUIT DIAGNOSIS >
L TERMINAL CIRCUIT (OPEN)
L TERMINAL CIRCUIT (OPEN)
DescriptionINFOID:0000000006274870
The “L” terminal circuit controls the charge warning lamp. The charge warning lamp illuminates when the igni-
tion switch is set to ON or START. When the alternat or is providing sufficient voltage with the engine running,
the charge warning lamp will go off. If the charge warn ing lamp illuminates with the engine running, a malfunc-
tion is indicated.
Diagnosis ProcedureINFOID:0000000006274871
1.CHECK “L” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check that “L” terminal is clean and tight.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair “L” terminal connection. Confirm repair by performing complete Starting/Charging system test. Refer to Technical Service Bulletin.
2.CHECK “L” TERMIN AL CIRCUIT (OPEN)
1. Disconnect alternator connector.
2. Apply ground to alternator harness connector terminal.
3. Check condition of the charge warning lamp with the ignition switch in the ON position.
Does it illuminate?
YES >> “L” terminal circuit is normal. Refer to CHG-13, "Work Flow".
NO >> GO TO 3.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the battery cable from the negative terminal.
2. Disconnect the combination meter connector.
3. Check continuity between alternator harness connector and combination meter harness connector.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair the harness or connector.
4.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
Check continuity between combination me ter harness connector and fuse block (J/B).
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair the harness or connector.
5.CHECK POWER SUPPLY CIRCUIT
(+) (–) Condition Charge warning lamp
Alternator
Connector Terminal E205 3 Ground Ignition switch ON ON
Alternator Combination meter Continuity
Connector Terminal Connector Terminal
E205 3 M34 25 Existed
Combination meter Fuse block (J/B) Continuity
Connector Terminal Connector Terminal
M34 2 M1 2A Existed
Revision: 2010 May2011 QX56

ENGINE COOLANTCO-9
< PERIODIC MAINTENANCE >
C
DE
F
G H
I
J
K L
M A
CO
NP
O
3. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to CO-10, "
Flushing".
RefillingINFOID:0000000006289659
1. Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring. Refer to CO-13, "
Exploded View".
If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-107, "
Disassem-
bly and Assembly".
2. Check that each hose clamp is firmly tightened.
3. Remove air relief plug (1) on heater hose.
4. Fill radiator, and reservoir tank, to specified level. Pour engine coolant through engine coolant filler neck
slowly of less than 3 (2-5/8 lmp qt) a minute to allow air
in system to escape.
 Use Genuine NISSAN Long Li fe Antifreeze/Coolant or
equivalent mixed with water (dis tilled or demineralized).
Refer to MA-10, "
Fluids and Lubricants".
5. When engine coolant overflows air relief hole on heater hos e, install air relief plug with clamp. Then refill
radiator with engine coolant.
6. Install radiator cap.
7. Install reservoir tank cap.
8. Warm up engine until opening thermostat less than 3,000 rpm.  Check thermostat opening condition by touching radiat or hose (lower) to see a flow of warm water.
CAUTION: : 1.96 N·m (0.2 kg-m, 17 in-lb)
2. Engine cover
: Vehicle front
JPBIA3429ZZ
Engine coolant capacity : Refer to CO-23,
"PeriodicalMaintenanceS
pecification".
(With reservoir tank at
“MAX” level)JPBIA0412ZZ
Reservoir tank engine
coolant capacity :Refer to
CO-23,
"PeriodicalMaintenanceSp
ecification".
(At “MAX” level)
A : MAX
B: MIN
JPBIA0102ZZ
Revision: 2010 May2011 QX56

DAS-5
C
DE
F
G H
I
J
K L
M B
DAS
N
P A
Description ..........................................................
..
208
Diagnosis Procedure .............................................208
NORMAL OPERATING CONDITION ...............210
Description .......................................................... ..210
REMOVAL AND INSTALLATION .............212
ICC SENSOR .................................................. ..212
Exploded View .................................................... ..212
Removal and Installation .......................................212
ACCELERATOR PEDAL ASSEMBLY ............213
Exploded View .................................................... ..213
DYNAMIC DRIVER ASSISTANCE SWITCH ...214
Exploded View .................................................... ..214
FCW
PRECAUTION ................ ............................
215
PRECAUTIONS .............................................. ..215
Precaution for FCW System Service ................... ..215
SYSTEM DESCRIPTION ...........................216
COMPONENT PARTS ................................... ..216
Component Parts Location .................................. ..216
Component Description .........................................216
SYSTEM ...........................................................218
System Description ............................................. ..218
Fail-safe (ADAS Control Unit) ...............................219
Fail-safe (ICC Sensor) ..........................................220
OPERATION .....................................................221
Switch Name and Function ................................. ..221
Menu Displayed by Pressing Each Switch ............221
HANDLING PRECAUTION ..............................223
Precautions for Forward Collision Warning ......... ..223
DIAGNOSIS SYSTEM (ADAS CONTROL
UNIT) ................................................................
224
On Board Diagnosis Function ............................. ..224
CONSULT-III Function (ICC/ADAS) ......................225
DIAGNOSIS SYSTEM (ICC SENSOR) ............235
CONSULT-III Function (LASER) ...........................235
ECU DIAGNOSIS INFO RMATION ............237
ADAS CONTROL UNIT .................................. ..237
Reference Value ................................................. ..237
Fail-safe ................................................................242
DTC Inspection Priority Chart ...............................243
DTC Index .............................................................244
ICC SENSOR ....................................................248
Reference Value ................................................. ..248
Fail-safe ................................................................249
DTC Inspection Priority Chart ...............................249
DTC Index ........................................................... ..249
WIRING DIAGRAM ....................................251
DRIVER ASSISTANCE SYSTEMS .................251
Wiring Diagram .................................................... ..251
BASIC INSPECTION .................................266
DIAGNOSIS AND REPAIR WORK FLOW .....266
Work Flow ............................................................ ..266
SYMPTOM DIAGNOSIS ............................268
FORWARD COLLISION WARNING SYSTEM
SYMPTOMS ....................................................
268
Symptom Table ................................................... ..268
FCW SYSTEM IS NOT ACTIVATED ..............269
Description .............................................................269
Diagnosis Procedure .............................................269
NORMAL OPERATING CONDITION .............270
Description .............................................................270
REMOVAL AND INSTALLATION .............271
WARNING SYSTEMS SWITCH ......................271
Removal and Installation ..................................... ..271
LDW & LDP
PRECAUTION ............... .............................
272
PRECAUTIONS ...............................................272
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
272
Precautions For Harness Repair ...........................272
Precaution for LDW/LDP System Service .............273
SYSTEM DESCRIPTION ...........................274
COMPONENT PARTS ....................................274
LANE DEPARTURE WARNING (LDW) SYSTEM ..274
LANE DEPARTURE WARNING (LDW) SYSTEM
: Component Parts Location ................................ ..
274
LANE DEPARTURE WARNING (LDW) SYSTEM
: Component Description .......................................
274
LANE DEPARTURE PREVENTION (LDP) SYS-
TEM ........................................................................ ..
275
LANE DEPARTURE PREVENTION (LDP) SYS-
TEM : Component Parts Location .........................
275
LANE DEPARTURE PREVENTION (LDP) SYS-
TEM : Component Description ..............................
276
SYSTEM ..........................................................277
LANE DEPARTURE WARNING (LDW) SYSTEM ..277
LANE DEPARTURE WARNING (LDW) SYSTEM
: System Description ............................................ ..
277
Revision: 2010 May2011 QX56