2007 INFINITI QX56 Factory Service Manual

radiator keyless entry immobilizer rear entertainment dead battery open trunk service interval

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INFINITI QX56 2007 Factory Service Manual ACS-52
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
• When depressing the accelerator.
• Chime does not sound when the vehicle is not driving.
• Chime does not sound when the syst

ACS-52
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR SYMPTOMS
• When depressing the accelerator.
• Chime does not sound when the vehicle is not driving.
• Chime does not sound when the system does not detect any vehicle ahead. Diagnose the conditions under
which the system is detecting the vehicle ahead and when the system is malfunctioning. If there is any mal-
function in detecting the vehicle ahead. Refer to ACS-52, "
Symptom 7 the ICC System Frequently Cannot
Detect the Vehicle Ahead/The Detection Zone Is Short".
1.CHECK ICC WARNING CHIME
With CONSULT-II
1. With "ACTIVE TEST" on the CONSULT-II, check that ICC warning chime operates normally.
OK or NG
OK >> Determine preceding vehicle detection status when malfunction occurred. If chime should have
sounded replace ICC unit. Refer to ACS-55, "
ICC Unit". Perform ICC system running test. Refer
to ACS-9, "
ICC System Running Test". Then perform self-diagnosis of ICC system again.
NG >> GO TO 2.
2.CAN COMMUNICATION INSPECTION
With CONSULT-II
1. With CONSULT-II self-diagnosis, check “CAN COMM CIRCUIT”.
OK or NG
OK >> Refer to ACS-37, "DTC 20 CAN COMM CIRCUIT".
NG >> Replace combination meter. Refer to DI-21, "
Removal and Installation of Combination Meter".
Erase DTC and perform ICC system running test. Refer to ACS-9, "
ICC System Running Test".
Then perform self-diagnosis of ICC system again.
Symptom 6 Driving Force Is HuntingINFOID:0000000003533820
1.CHECK ECM
1. Perform self-diagnosis of ECM.
OK or NG
OK >> Refer to ACS-52, "Symptom 7 the ICC System Frequently Cannot Detect the Vehicle Ahead/The
Detection Zone Is Short".
NG >> Repair as necessary. Erase DTC and perform ICC system running test. Refer to ACS-9, "
ICC
System Running Test". Then perform self-diagnosis of ICC system again.
Symptom 7 the ICC System Frequently Cannot Detect the Vehicle Ahead/The Detec-
tion Zone Is Short
INFOID:0000000003533821
The detection function may become disrupted in the following cases:
• When the reflector of the vehicle ahead is small or not clean enough to reflect the laser.
• When driving a road with extremely sharp corners.
• When the laser cannot detect the reflector of the vehicle ahead as the vehicle ahead is passing a hill or
passing the peak.
1.VISUAL CHECK
1. Check ICC sensor body window for contamination and foreign materials.
OK or NG
OK >> If any contamination or foreign materials are found, remove them. Then perform ICC system run-
ning test. Refer to ACS-9, "
ICC System Running Test".
NG >> GO TO 2.
2.CHECK FUNCTION
1. After performing laser beam aiming adjustment, perform ICC system running test. Refer to ACS-9, "
ICC
System Running Test". Check that preceding vehicle detection performance has been improved.
OK or NG
OK >> Inspection End.
NG >> • Replace ICC sensor and perform laser beam aiming adjustment. Refer to ACS-55, "
ICC Sen-
sor".

Page 66 of 3061

INFINITI QX56 2007 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMS
ACS-53
< SERVICE INFORMATION >[ICC]
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• Perform ICC system running test. Refer to ACS-9, "ICC System Running Test" . Then perform
self-d

Page 67 of 3061

INFINITI QX56 2007 Factory Service Manual ACS-54
< SERVICE INFORMATION >[ICC]
ELECTRICAL COMPONENT INSPECTION
ELECTRICAL COMPONENT INSPECTION
ICC Steering SwitchINFOID:0000000003533823
1. Disconnect ICC steering switch.
2. Check resistance be

Page 68 of 3061

INFINITI QX56 2007 Factory Service Manual REMOVAL AND INSTALLATION
ACS-55
< SERVICE INFORMATION >[ICC]
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REMOVAL AND INSTALLATION
ICC UnitINFOID:0000000003533826
ICC SensorINFOID:0000000003533827
CAUTION:
Perfor

Page 69 of 3061

INFINITI QX56 2007 Factory Service Manual AP-1
BODY
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CONTENTS
ADJUSTABLE PEDAL
SERVICE INFORMATION ............................2ADJUSTABLE PEDAL SYSTEM .......................2
Adjustable Pedal ....

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INFINITI QX56 2007 Factory Service Manual AP-2
< SERVICE INFORMATION >
ADJUSTABLE PEDAL SYSTEM
SERVICE INFORMATION
ADJUSTABLE PEDAL SYSTEM
Adjustable PedalINFOID:0000000003533216
For adjustable pedal information, refer to SE-11 .

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INFINITI QX56 2007 Factory Service Manual AT-1
TRANSMISSION/TRANSAXLE
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CONTENTS
AUTOMATIC TRANSMISSION
SERVICE INFORMATION ............................6
INDEX FOR DTC ..............................

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CONTENTS
AUTOMATIC TRANSMISSION
SERVICE INFORMATION ............................6
INDEX FOR DTC .................................................6
Alphabetical Index .....................................................6
DTC No. Index ..........................................................6
PRECAUTIONS ...................................................8
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
8
Precaution for On Board Diagnosis (OBD) System
of A/T and Engine .....................................................
8
Precaution .................................................................8
Service Notice or Precaution .....................................9
PREPARATION ..................................................11
Special Service Tool ...............................................11
Commercial Service Tool ........................................12
A/T FLUID ...........................................................13
Changing Automatic Transmission Fluid (ATF) ......13
Checking Automatic Transmission Fluid (ATF) .......13
A/T Fluid Cooler Cleaning .......................................15
A/T CONTROL SYSTEM ....................................19
Cross-Sectional View (2WD models) ......................19
Cross-Sectional View (4WD models) ......................20
Shift Mechanism ......................................................20
TCM Function ..........................................................31
CAN Communication ...............................................32
Input/Output Signal of TCM .....................................33
Line Pressure Control .............................................33
Shift Control ............................................................35
Lock-up Control .......................................................36
Engine Brake Control ..............................................37
Control Valve ...........................................................37
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......39
Introduction .............................................................39
OBD-II Function for A/T System ..............................39
One or Two Trip Detection Logic of OBD-II ............39
OBD-II Diagnostic Trouble Code (DTC) ..................39
Malfunction Indicator Lamp (MIL) ............................41
TROUBLE DIAGNOSIS ....................................43
DTC Inspection Priority Chart ..................................43
Fail-Safe ..................................................................43
How To Perform Trouble Diagnosis for Quick and
Accurate Repair .......................................................
44
A/T Electrical Parts Location ...................................50
Circuit Diagram ........................................................51
Inspections Before Trouble Diagnosis .....................51
Check Before Engine Is Started ..............................55
Check at Idle ............................................................55
Cruise Test - Part 1 .................................................56
Cruise Test - Part 2 .................................................58
Cruise Test - Part 3 .................................................59
Vehicle Speed When Shifting Gears .......................59
Vehicle Speed When Performing and Releasing
Complete Lock-up ...................................................
60
Vehicle Speed When Performing and Releasing
Slip Lock-up .............................................................
60
Symptom Chart ........................................................60
TCM Input/Output Signal Reference Value .............82
CONSULT-II Function (A/T) ....................................83
DTC U1000 CAN COMMUNICATION LINE .....91
Description ...............................................................91
On Board Diagnosis Logic .......................................91
Possible Cause ........................................................91
DTC Confirmation Procedure ..................................91
Wiring Diagram - AT - CAN .....................................92
Diagnosis Procedure ...............................................93
DTC P0615 START SIGNAL CIRCUIT .............94
Description ...............................................................94
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................
94
On Board Diagnosis Logic .......................................94
Possible Cause ........................................................94
DTC Confirmation Procedure ..................................94
Wiring Diagram - AT - STSIG ..................................95
Diagnosis Procedure ...............................................95

Page 72 of 3061

INFINITI QX56 2007 Factory Service Manual AT-2
DTC P0700 TCM ................................................98
Description ..............................................................98
On Board Diagnosis Logic ..........................

AT-2
DTC P0700 TCM ................................................98
Description ..............................................................98
On Board Diagnosis Logic ......................................98
Possible Cause .......................................................98
DTC Confirmation Procedure .................................98
Diagnosis Procedure ..............................................98
DTC P0705 PARK/NEUTRAL POSITION
SWITCH .............................................................
99
Description ..............................................................99
CONSULT-II Reference Value in Data Monitor
Mode .......................................................................
99
On Board Diagnosis Logic ......................................99
Possible Cause .......................................................99
DTC Confirmation Procedure .................................99
Wiring Diagram - AT - PNP/SW .............................100
Diagnosis Procedure .............................................100
DTC P0717 TURBINE REVOLUTION SEN-
SOR ..................................................................
103
Description .............................................................103
CONSULT-II Reference Value in Data Monitor
Mode ......................................................................
103
On Board Diagnosis Logic .....................................103
Possible Cause ......................................................103
DTC Confirmation Procedure ................................103
Diagnosis Procedure .............................................103
DTC P0720 VEHICLE SPEED SENSOR A/T
(REVOLUTION SENSOR) ...............................
105
Description .............................................................105
CONSULT-II Reference Value in Data Monitor
Mode ......................................................................
105
On Board Diagnosis Logic .....................................105
Possible Cause ......................................................105
DTC Confirmation Procedure ................................105
Wiring Diagram - AT - VSSA/T ..............................106
Diagnosis Procedure .............................................107
DTC P0725 ENGINE SPEED SIGNAL ............109
Description .............................................................109
CONSULT-II Reference Value in Data Monitor
Mode ......................................................................
109
On Board Diagnosis Logic .....................................109
Possible Cause ......................................................109
DTC Confirmation Procedure ................................109
Diagnosis Procedure .............................................109
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE ..........................................
111
Description .............................................................111
CONSULT-II Reference Value in Data Monitor
Mode ......................................................................
111
On Board Diagnosis Logic .....................................111
Possible Cause ......................................................111
DTC Confirmation Procedure ................................111
Diagnosis Procedure .............................................111
DTC P0744 A/T TCC S/V FUNCTION (LOCK-
UP) ...................................................................
113
Description ............................................................113
CONSULT-II Reference Value in Data Monitor
Mode .....................................................................
113
On Board Diagnosis Logic ....................................113
Possible Cause .....................................................113
DTC Confirmation Procedure ................................113
Diagnosis Procedure .............................................114
DTC P0745 LINE PRESSURE SOLENOID
VALVE ..............................................................
115
Description ............................................................115
CONSULT-II Reference Value in Data Monitor
Mode .....................................................................
115
On Board Diagnosis Logic ....................................115
Possible Cause .....................................................115
DTC Confirmation Procedure ................................115
Diagnosis Procedure .............................................115
DTC P1705 THROTTLE POSITION SENSOR ..117
Description ............................................................117
CONSULT-II Reference Value in Data Monitor
Mode .....................................................................
117
On Board Diagnosis Logic ....................................117
Possible Cause .....................................................117
DTC Confirmation Procedure ................................117
Diagnosis Procedure .............................................117
DTC P1710 A/T FLUID TEMPERATURE SEN-
SOR CIRCUIT ...................................................
119
Description ............................................................119
CONSULT-II Reference Value in Data Monitor
Mode .....................................................................
119
On Board Diagnosis Logic ....................................119
Possible Cause .....................................................119
DTC Confirmation Procedure ................................119
Wiring Diagram - AT - FTS ...................................120
Diagnosis Procedure .............................................120
Component Inspection ..........................................122
DTC P1721 VEHICLE SPEED SENSOR MTR ..124
Description ............................................................124
CONSULT-II Reference Value in Data Monitor
Mode .....................................................................
124
On Board Diagnosis Logic ....................................124
Possible Cause .....................................................124
DTC Confirmation Procedure ................................124
Diagnosis Procedure .............................................124
DTC P1730 A/T INTERLOCK ...........................126
Description ............................................................126
On Board Diagnosis Logic ....................................126
Possible Cause .....................................................126
DTC Confirmation Procedure ................................126
Judgement of A/T Interlock ...................................126
Diagnosis Procedure .............................................127
DTC P1731 A/T 1ST ENGINE BRAKING ........128
Description ............................................................128
CONSULT-II Reference Value in Data Monitor
Mode .....................................................................
128

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