2009 INFINITI QX56 200

SE-76
< DISASSEMBLY AND ASSEMBLY >
THIRD SEAT
THIRD SEAT
Exploded ViewINFOID:0000000003775489
Third seat LH
AWJIA0434GB
1. Headrest 2. Headrest holder, locking 3. Headrest holder, free
4. Seatback board 5. Seatback pad 6. Seatback frame assembly
7. Seatback cushion 8. Seatback trim cover 9. Seat cushion
Revision: December 20092009 QX56

THIRD SEATSE-77
< DISASSEMBLY AND ASSEMBLY >
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Third seat RH
10. Seat cushion trim cover 11. Front link covers 12. Flex mat
13. Flex mat springs 14. Seat cushion frame assembly 15. Seat motor/hinge assembly
16. Control module/cross beam assem- bly 17. LH hinge cover
18. Side link cover
19. RH hinge cover 20. Seat belt bucle bolt
ALIIA0070GB
Revision: December 20092009 QX56

SE-78
< DISASSEMBLY AND ASSEMBLY >
THIRD SEAT
1. Headrest 2. Headrest holder, locking 3. Headrest holder, free
4. Seatback board 5. Seatback pad 6. Seatback frame assembly
7. Seatback cushion 8. Seatback trim cover 9. RH hinge cover
10. Seat motor/hinge assembly 11. Seat cushion 12. Seat cushion trim cover
13. Front link covers 14. Flex mat 15. Flex mat springs
16. Seat cushion frame assembly 17. Side link cover 18. LH hinge cover
Revision: December 20092009 QX56

SEC-1
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY
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CONTENTS
SECURITY CONTROL SYSTEM
WITH INTELLIGENT KEY SYSTEM
BASIC INSPECTION ....... .............................
3
DIAGNOSIS AND REPAIR WORKFLOW ..... .....3
Work Flow ........................................................... ......3
INSPECTION AND ADJUSTMENT .....................6
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT .................................................... ......
6
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement .......
6
ECM RE-COMMUNICATING FUNCTION ............. ......6
ECM RE-COMMUNICATING FUNCTION : De-
scription .....................................................................
6
ECM RE-COMMUNICATING FUNCTION : Spe-
cial Repair Requirement ............................................
6
FUNCTION DIAGNOSIS ...............................7
INTELLIGENT KEY SYSTEM/ENGINE
START FUNCTIO N ........................................ .....
7
System Diagram .................................................. ......7
System Description ...................................................7
Component Parts Location ........................................9
Component Description ...........................................10
INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS ..................................................................
11
System Diagram .................................................. ....11
System Description .................................................11
Component Parts Location ......................................13
Component Description ..........................................13
VEHICLE SECURITY SYSTEM .........................15
System Diagram .................................................. ....15
System Description .................................................15
Component Parts Location ......................................16
Component Description ...........................................17
DIAGNOSIS SYSTEM (BCM) ............................18
COMMON ITEM ..................................................... ....18
COMMON ITEM : CONSULT-III Function (BCM -
COMMON ITEM) .....................................................
18
IMMU ...................................................................... ....18
IMMU : CONSULT-III Function (BCM - IMMU) ........18
THEFT ALM ........................................................... ....19
THEFT ALM : CONSULT-III Function (BCM -
THEFT ALM) ....................................................... ....
19
DIAGNOSIS SYSTEM (INTELLIGENT KEY
UNIT) .................................................................
20
CONSULT-III Function (INTELLIGENT KEY) ..........20
COMPONENT DIAGNOSIS .........................22
U1000 CAN COMM CIRCUIT ...........................22
Description ........................................................... ....22
DTC Logic ................................................................22
Diagnosis Procedure ...............................................22
U1010 CONTROL UNIT (CAN) .........................23
Description ...............................................................23
DTC Logic ................................................................23
Diagnosis Procedure ...............................................23
Special Repair Requirement ....................................23
B2013 ID DISCORD I-KEY-STRG ....................24
Description ...............................................................24
DTC Logic ................................................................24
Diagnosis Procedure ...............................................24
B2190, P1614 NATS ANTENNA AMP. ............27
Description ...............................................................27
DTC Logic ................................................................27
Diagnosis Procedure ...............................................27
B2191, P1615 DIFFERENCE OF KEY .............30
Description ...............................................................30
DTC Logic ................................................................30
Diagnosis Procedure ...............................................30
Revision: December 20092009 QX56

SEC-2
B2192, P1611 ID DISCORD, IMMU-ECM .........31
Description ........................................................... ...31
DTC Logic ...............................................................31
Diagnosis Procedure ..............................................31
B2193, P1612 CHAIN OF ECM-IMMU ..............33
Description ........................................................... ...33
DTC Logic ...............................................................33
Diagnosis Procedure ..............................................33
B2194 ID DISCORD IMMU-I-KEY .....................34
Description ........................................................... ...34
DTC Logic ...............................................................34
Diagnosis Procedure ..............................................34
B2552 INTELLIGENT KEY ................................35
Description ........................................................... ...35
DTC Logic ...............................................................35
Diagnosis Procedure ..............................................35
Special Repair Requirement ...................................35
B2590 ID DISCORD BCM-I-KEY .................... ...36
Description ........................................................... ...36
DTC Logic ...............................................................36
Diagnosis Procedure ..............................................36
P1610 LOCK MODE ..........................................37
Description ........................................................... ...37
DTC Logic ...............................................................37
Diagnosis Procedure ..............................................37
POWER SUPPLY AND GROUND CIRCUIT .....38
INTELLIGENT KEY UNIT ...................................... ...38
INTELLIGENT KEY UNIT : Diagnosis Procedure ...38
BCM ........................................................................ ...38
BCM : Diagnosis Procedure ...................................38
KEY CYLINDER SWITCH .................................40
Description ........................................................... ...40
Component Function Check ...................................40
Diagnosis Procedure ..............................................40
IGNITION KNOB SWITCH .................................42
Ignition Knob Switch Check ................................. ...42
HOOD SWITCH .................................................44
Diagnosis Procedure ..............................................44
HORN FUNCTION .............................................46
Symptom Table ................................................... ...46
VEHICLE SECURITY INDICATOR ....................47
Description ........................................................... ...47
Component Function Check .................................47
Diagnosis Procedure ..............................................47
ECU DIAGNOSIS ..................................... ...49
BCM (BODY CONTROL MODULE) ............... ...49
Reference Value .................................................. ...49
Terminal Layout ......................................................51
Physical Values .......................................................51
Wiring Diagram - VEHICLE SECURITY SYSTEM ...57
Wiring Diagram - IVIS .............................................68
Fail Safe .................................................................76
DTC Inspection Priority Chart ...............................77
DTC Index ..............................................................77
INTELLIGENT KEY UNIT ..................................79
Reference Value - Intelligent Key Unit ................. ...79
Reference Value - Steering Lock Solenoid .............82
Wiring Diagram - INTELLIGENT KEY SYSTEM/
ENGINE START FUNCTION - ................................
83
Fail Safe .................................................................95
DTC Inspection Priority Chart ...............................95
DTC Index ..............................................................95
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) .................
96
Reference Value .................................................. ...96
Terminal Layout ......................................................98
Physical Values .......................................................98
Fail Safe ...............................................................102
DTC Index ............................................................103
SYMPTOM DIAGNOSIS ...........................104
INTELLIGENT KEY SYSTEM/ENGINE
START FUNCTION SYMPTOMS ................... ..
104
Symptom Table .................................................... .104
VEHICLE SECURITY SYSTEM SYMPTOMS ..105
Symptom Table .....................................................105
INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS SYMPTOMS ...........................................
106
Symptom Table .................................................... .106
ON-VEHICLE MAINTENANCE .................107
PRE-INSPECTION FOR DIAGNOSTIC ......... ..107
Basic Inspection ................................................... .107
Vehicle Security Operation Check ........................107
PRECAUTION ...........................................109
PRECAUTIONS .............................................. ..109
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. .
109
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ................................
109
ON-VEHICLE REPAIR ..............................111
VEHICLE SECURITY SYSTEM ...................... ..111
Removal and Installation .......................................111
Revision: December 20092009 QX56

DIAGNOSIS AND REPAIR WORKFLOWSEC-3
< BASIC INSPECTION > [WITH INTELLIGENT KEY SYSTEM]
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000003775864
OVERALL SEQUENCE
DETAILED FLOW
ALKIA0538GB
Revision: December 20092009 QX56

SEC-4
< BASIC INSPECTION >[WITH INTELLIGENT KEY SYSTEM]
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.CHECK DTC
1. Check DTC for Intelligent Key unit and BCM.
2. Perform the following procedure if DTC is displayed.
- Erase DTC.
- Study the relationship between the cause detected by DTC and the symptom described by the customer.
3. Check related service bulletins for information.
Is any symptom described and any DTC detected?
Symptom is described, DTC is displayed>>GO TO 3
Symptom is described, DTC is not displayed>>GO TO 4
Symptom is not described, DTC is displayed>>GO TO 5
3.CONFIRM THE SYMPTOM
Confirm the symptom described by the customer.
Connect CONSULT-III to the vehicle in “DATA MO NITOR” mode and check real-time diagnosis results.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 5
4.CONFIRM THE SYMPTOM
Confirm the symptom described by the customer.
Connect CONSULT-III to the vehicle in “DATA MO NITOR ” mode and check real-time diagnosis results.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 6
5.PERFORM DTC CONFIRMATION PROCEDURE
Perform DTC Confirmation Procedure for the display ed DTC, and then check that DTC is detected again.
If two or more DTCs are detected, refer to SEC-95, "
DTCInspectionPriorityChart" (Intelligent Key unit),
SEC-77, "
DTCInspectionPriorityChart" (BCM) and determine trouble diagnosis order.
Is DTC detected?
YES >> GO TO 8
NO >> Refer to GI-38, "
Intermittent Incident".
6.PERFORM BASIC INSPECTION
Perform Basic Inspection. Refer to SEC-107, "
Basic Inspection".
>> GO TO 7
7.DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE
Detect malfunctioning system according to Symptom Table based on the confirmed symptom in step 4.
>> GO TO 8
8.DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE
Inspect according to Diagnostic Procedure of the system.
NOTE:
The Diagnostic Procedure is described based on open circuit inspection. A short circuit inspection is also
required for the circuit check in the Diagnostic Procedure.
>> GO TO 9
Revision: December 20092009 QX56

DIAGNOSIS AND REPAIR WORKFLOWSEC-5
< BASIC INSPECTION > [WITH INTELLIGENT KEY SYSTEM]
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9.REPAIR OR REPLACE THE MALFUNCTIONING PART
1. Repair or replace the malfunctioning part.
2. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-
ment.
3. Check DTC. If DTC is displayed, erase it.
>> GO TO 10
10.FINAL CHECK
When DTC was detected in step 9, perform DTC Confirmation Procedure or Component Function Check
again, and then check that the malfunctions have been fully repaired.
When symptom was described by the customer, refer to the confirmed symptom in step 3 or 4, and check that
the symptom is not detected.
Does the symptom reappear?
YES (DTC is detected)>>GO TO 8
YES (Symptom remains)>>GO TO 6
NO >> Inspection End.
Revision: December 20092009 QX56