warning INFINITI QX56 2010 Factory Service Manual

DLK-172
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BCM (BODY CONTROL MODULE)
B2191: DIFFERENCE OF KEY
———SEC-34
B2192: ID DISCORD BCM-ECM ———SEC-35
B2193: CHAIN OF BCM-ECM ———SEC-37
B2552: INTELLIGENT KEY ———SEC-39
B2590: NATS MALFUNCTION ———SEC-40
C1708: [NO DATA] FL ———WT-14
C1709: [NO DATA] FR ———WT-14
C1710: [NO DATA] RR ———WT-14
C1711: [NO DATA] RL ———WT-14
C1712: [CHECKSUM ERR] FL ———WT-16
C1713: [CHECKSUM ERR] FR ———WT-16
C1714: [CHECKSUM ERR] RR ———WT-16
C1715: [CHECKSUM ERR] RL ———WT-16
C1716: [PRESSDATA ERR] FL ———WT-18
C1717: [PRESSDATA ERR] FR ———WT-18
C1718: [PRESSDATA ERR] RR ———WT-18
C1719: [PRESSDATA ERR] RL ———WT-18
C1720: [CODE ERR] FL ———WT-16
C1721: [CODE ERR] FR ———WT-16
C1722: [CODE ERR] RR ———WT-16
C1723: [CODE ERR] RL ———WT-16
C1724: [BATT VOLT LOW] FL ———WT-16
C1725: [BATT VOLT LOW] FR ———WT-16
C1726: [BATT VOLT LOW] RR ———WT-16
C1727: [BATT VOLT LOW] RL ———WT-16
C1729: VHCL SPEED SIG ERR ———WT-19
C1735: IGNITION SIGNAL ———WT-20
CONSULT display Fail-safeIntelligent Key
warning lamp ON Tire pressure
monitor warning
lamp ON Reference page
Revision: April 20092010 QX56

BACK DOOR CONTROL UNITDLK-197
< ECU DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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BACK DOOR CONTROL UNIT
Reference ValueINFOID:0000000005147029
TERMINAL LAYOUT
PHYSICAL VALUES
LIIA2444E
Te r m i n a l Wire Col-
or Item
Condition Voltage (V)
(Approx.)
1 B Ground ——
2 B Ground ——
3 Y/R Battery power supply —Battery voltage
4 G Hazard lamp output Request to flash hazardsPulse must be >50ms
but less than 250ms
5 B/P Pinch strip ground ——
6 R Warning chime output Back door motor activeBattery voltage
7 G/R Ignition switch Ignition switch ON
Battery voltage
Ignition switch OFF 0
8 GR/B Back door close switch Close position ON
0
Neutral position OFF Battery voltage
9 L Warning chime ground ——
10 L/B Battery power —Battery voltage
11 Y Cinch latch motor
CLOSE output Back door close operation
Battery voltage
12 L Closure motor
RETURN output Back door release operation
Battery voltage
13 P/L Back door close switch Cancel position
0
Neutral position 5
14 P Close switch signal While fully opening back door
PIIA3278E
WIIA1047E
Revision: April 20092010 QX56

DOOR LOCK FUNCTION SYMPTOMSDLK-213
< SYMPTOM DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM]
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Auto lock function does not operate properly. 1. Check “AUTO RELOCK TIMER” setting in “WORK SUPPORT”.
DLK-53
2. Key switch check (BCM).DLK-115
3. Ignition knob switch check.DLK-116
4. Door switch check. DLK-71
5. Replace Intelligent Key unit.SEC-120
Key reminder function does not operate properly.1.
Check “ANTI KEY LOCK IN FUNCTION” setting in “WORK
SUPPORT”.
DLK-53
2. Door switch check.
DLK-71
3a. Center console area antenna (rear) check.DLK-60
3b. Luggage area antenna check.DLK-62
3c. Center console area antenna (front) check.DLK-64
3d. Overhead console area antenna check.DLK-66
4. Front door lock actuator LH (door unlock sensor) check.DLK-81
5. Intelligent Key battery inspection.DLK-106
6. Replace Intelligent Key unit.SEC-120
Panic alarm function does not operate properly.1. Check “PANIC ALARM DELAY” setting in “WORK SUPPORT”.
DLK-55
2. Theft warning operation check.DLK-216
3. Intelligent Key battery inspection.DLK-106
4. Key switch check (BCM). DLK-115
5. Ignition knob switch check.DLK-116
6. Replace Intelligent Key unit.SEC-120
Back door open function does not operate prop-
erly.1. Back door diagnosis.
DLK-1232. Intelligent Key battery inspection.DLK-106
3. Replace Intelligent Key unit.SEC-120
Power window down function does not operate.1. Check “PW DOWN SET” setti
ng in “WORK SUPPORT”. DLK-552. Intelligent Key battery inspection. DLK-106
SymptomDiagnosis/service procedureReference
page
Revision: April 20092010 QX56

DLK-214
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
BACK DOOR OPENER FUNCTION
BACK DOOR OPENER FUNCTION
BACK DOOR OPENER SWITCH
BACK DOOR OPENER SWITCH : Symptom TableINFOID:0000000005147035
TRUNK OPEN FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “WORK FLOW”. Refer to
DLK-6, "
Work Flow".
• Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
• If the following symptoms” are detected, check systems shown in the “Diagnosis/service procedure” column in this order.
Conditions of Vehicle (Operating Conditions)
• Vehicle is in park.
BACK DOOR HANDLE
Symptom Suspect systemsRefer to
Automatic operations are not executed from the back door fully
closed or fully open position.
(Auto closure operates normally). Power liftgate switch system inspection
DLK-143
Park switch —
Power window serial link —
Pinch strip system inspection DLK-135
Automatic operations are not carried out together with open/close
operations.
(Manual operations are normal). Power liftgate switch system inspection
DLK-143Back door close switch system inspectionDLK-139
Auto back door power supply and ground cir-
cuit system inspection. DLK-69
The auto closure function does not operate.
(Stops at the halfway position for auto closing operations).
Pinch strip system inspection
DLK-135
During auto closing operations, if obstruction is detected, the door
does not operate in reverse. Back door motor assembly
DLK-247
During close or cinch operations, the door does not operate in re-
verse if the back door handle is operated. Handle switch system
DLK-142
When the keyfob is operated, the back door does not operate au-
tomatically. Remote keyless entry system inspection
DLK-103Power window serial link —
Pinch strip system inspection DLK-135
Auto closure does not operate. Half-latch switch system
DLK-137Cinch latch motor systemDLK-141
Handle switch systemDLK-142
The back door does not open.
(Closure motor rotation is not reversed). Open switch system
DLK-138
Handle switch systemDLK-142
Warning chime does not sound. Back door warning chime systemDLK-136
Auto closure operation works, but the back door is not fully closed Close switch system
DLK-139
Handle switch systemDLK-142
Cinch latch motor systemDLK-141
Back door latch assembly mechanism dam-
aged or worn.DLK-247
Auto open operation releases lock, but does not fully open back
door. Glass hatch ajar switch check
DLK-129
Glass hatch lock actuator does not operate
(Right front door must be unlocked for normal operation) Glass hatch switch check
DLK-127Glass hatch lock actuator check DLK-92
Replace BCMBCS-59
Revision: April 20092010 QX56

DLK-216
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
WARNING FUNCTION SYMPTOMS
WARNING FUNCTION SYMPTOMS
Symptom TableINFOID:0000000005147038
WARNING FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “WORK FLOW”. Refer to
DLK-6, "
Work Flow".
• Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and check each symptom.
• If the following “symptoms are detected, check systems shown in the “Diagnosis/service procedure” column
in this order.
Conditions of Vehicle (Operating Conditions)
Warning chime functions operating condition is extremely complicated, during operating confirmations, recon-
firm the list above twice in order to ensure proper operation.
Symptom Diagnosis/service procedure Reference
page
OFF position warn-
ing does not oper-
ate. For internal
1. Check ignition knob switch.
DLK-116
2. Check door switch. DLK-71
3. Check warning chime function.D L K - 111
4. Check Intermittent Incident. GI-38
For external1. Check ignition knob switch.
DLK-1162. Check door switch. DLK-71
3. Check Intelligent Key warning buzzer.DLK-95
4. Check Intermittent Incident. GI-38
P position warning does not operate.1. Check Park position switch.
TM-45
2. Check door switch.DLK-71
3. Check Intelligent Key warning buzzer.DLK-95
4. Check warning chime function.D L K - 111
5. Check combination meter display function.DLK-110
6. Check Intermittent Incident. GI-38
ACC warning does not operate1. Check ignition knob switch.
DLK-1162. Check warning chime function. D L K - 111
3. Check combination meter display function.DLK-110
4. Check Intermittent Incident. GI-38
Revision: April 20092010 QX56

WARNING FUNCTION SYMPTOMSDLK-217
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Take away warning
does not operate. Door open to close
1. Check door switch.
DLK-71
2. Check inside key antennasCenter console area (rear)
DLK-60Luggage areaDLK-62
Center console area (front)DLK-64
Overhead console areaDLK-66
3. Check Intelligent Key warning buzzer. DLK-95
4. Check warning chime function.D L K - 111
5. Check ignition knob switch.DLK-116
6. Check combination meter display function.DLK-110
7. Check Intermittent Incident. GI-38
Push-button igni-
tion switch opera-
tion1. Check ignition knob switch.
DLK-1162. Check inside key antennasCenter console area (rear)
DLK-60Luggage areaDLK-62
Center console area (front)DLK-64
Overhead console areaDLK-66
3. Check warning chime function. D L K - 111
4. Check combination meter display function.DLK-110
5. Check Intermittent Incident. GI-38
Door is open1. Check ignition knob switch.
DLK-1162. Check inside key antennasCenter console area (rear)
DLK-60Luggage areaDLK-62
Center console area (front)DLK-64
Overhead console areaDLK-66
3. Check combination meter display function. DLK-110
4. Check Intermittent Incident. GI-38
Take away through
window1.
Check “TAKE OUT FROM WIN WARN” setting in “WORK SUP-
PORT”.
DLK-55
2. Check inside key antennasCenter console area (rear)
DLK-60Luggage areaDLK-62
Center console area (front)DLK-64
Overhead console areaDLK-66
3. Check warning chime function. D L K - 111
4. Check ignition knob switch.DLK-116
5. Check combination meter display function.DLK-110
6. Check Intermittent Incident. GI-38
Key warning chime does not operate.1. Check door switch.
DLK-71
2. Check warning chime function.D L K - 111
3. Check ignition knob switch.DLK-116
4. Check combination meter display function.DLK-110
5. Check Intermittent Incident. GI-38
SymptomDiagnosis/service procedure Reference
page
Revision: April 20092010 QX56

DLK-218
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
WARNING FUNCTION SYMPTOMS
Door lock operation warning chime does
not operate.1. Check door switch.
DLK-71
2. Check ignition knob switch.DLK-116
3. Check Intelligent Key warning buzzer. DLK-95
4. Check inside key antennasCenter console area (rear)
DLK-60Luggage areaDLK-62
Center console area (front)DLK-64
Overhead console areaDLK-66
5. Check Intermittent Incident. GI-38
SymptomDiagnosis/service procedure Reference
page
Revision: April 20092010 QX56

DLK-220
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
HAZARD FUNCTION
HAZARD FUNCTION
Symptom TableINFOID:0000000005147040
HAZARD AND BUZZER REMINDER FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the follo
wing table, check “Work flow”. Refer to DLK-6, "
Work Flow".
• If the following symptoms” are detected, check systems shown in the “Diagnosis/service procedure” column in this order.
Conditions of Vehicle (Operating Conditions)
• “LOCK/UNLOCK BY I-KEY” is ON when setting on CONSULT-III.
• “ANSWER BACK FUNCTION” is ON when setting on CONSULT-III.
• Ignition switch is in OFF position.
• All doors are closed.
• Ignition switch is not depressed.
Symptom Diagnosis/service procedureReference
page
Hazard reminder does not operate by request switch.
(Buzzer reminder operate.) 1.
Check “HAZARD ANSWER BACK” setting in “WORK
SUPPORT”.
DLK-55
2. Check hazard function.
DLK-112
3. Check Intermittent incident. GI-38
Hazard reminder does not operate by Intelligent Key.
(Buzzer reminder operate.)1.
Check “HAZARD ANSWER BACK” setting in “WORK
SUPPORT”.
DLK-55
2. Check hazard function.
DLK-112
3. Check Intelligent Key battery inspection.DLK-106
Buzzer reminder does not operate by request switch.
(Hazard reminder operate.)1.
Check “ANS BACK I-KEY LOCK” or “ANS BACK I-KEY
UNLOCK” setting in “WORK SUPPORT”. DLK-55
2. Check Intelligent Key warning buzzer.
DLK-95
3. Check Intermittent incident. GI-38
Revision: April 20092010 QX56

HORN FUNCTIONDLK-221
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HORN FUNCTION
Symptom TableINFOID:0000000005147041
HAZARD AND HORN REMINDER FUNCTION MALFUNCTION
NOTE:
• Before performing the diagnosis in the following table, check “Work flow”. Refer to DLK-6, "
Work Flow".
• If the following symptoms” are detected, check systems shown in the “Diagnosis/service procedure” column in this order.
Conditions of Vehicle (Operating Conditions)
• “ANSWER BACK FUNCTION” is ON when setting on CONSULT-III.
• Ignition switch is in OFF position.
• All doors are closed.
Symptom Diagnosis/service procedureReference
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Hazard reminder does not operate by request switch.
(Horn reminder operate.) 1.
Check “HAZARD ANSWER BACK” setting in “WORK
SUPPORT”. DLK-55
2. Check hazard function.
DLK-112
3. Check Intermittent Incident. GI-38
Hazard reminder does not operate by Intelligent Key.
(Horn reminder operate.)1.
Check “HAZARD ANSWER BACK” setting in “WORK
SUPPORT”. DLK-55
2. Check hazard function.
DLK-112
3. Check Intelligent Key battery inspection.DLK-106
Horn reminder does not operate by request switch.
(Hazard reminder operate.)1.
Check “ANSWER BACK WITH I-KEY LOCK” or “AN-
SWER BACK WITH I-KEY UNLOCK” setting in “WORK
SUPPORT”. DLK-55
2. Check Intelligent Key warning buzzer.
DLK-95
3. Check Intermittent Incident. GI-38
Horn reminder does not operate by Intelligent Key.
(Hazard reminder operate.)1.
Check “HORN WITH KEYLESS LOCK” setting in
“WORK SUPPORT”. DLK-55
2. Check horn function.
DLK-108
3. Check Intermittent Incident. GI-38
Revision: April 20092010 QX56

PRECAUTIONSDLK-229
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005327543
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000005396457
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS , an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
Revision: April 20092010 QX56