steering INFINITI M35 2007 Factory Service Manual

LAN-2Revision: 2007 April2007 M35/M45 CAN System (Type 7) ............................................. 76
DIAGNOSIS SHEET ............................................ 76
CAN System (Type 8) ............................................. 77
DIAGNOSIS SHEET ............................................ 77
CAN System (Type 9) ............................................. 78
DIAGNOSIS SHEET ............................................ 78
CAN System (Type 10) ........................................... 79
DIAGNOSIS SHEET ............................................ 79
CAN System (Type 11) ........................................... 80
DIAGNOSIS SHEET ............................................ 80
Component Parts Location ..................................... 81
Harness Layout ...................................................... 81
Malfunction Area Chart ........................................... 82
MAIN LINE ........................................................... 82
BRANCH LINE .................................................... 82
SHORT CIRCUIT ................................................ 82
Main Line Between TCM and Data Link Connector ... 83
Main Line Between Data Link Connector and Pre-
crash Seat Belt Control Unit ................................... 84
Main Line Between Data Link Connector and RAS
Control Unit ............................................................. 85
Main Line Between RAS Control Unit and Pre-crash
Seat Belt Control Unit ............................................. 86
Main Line Between Pre-crash Seat Belt Control Unit
and Driver Seat Control Unit ................................... 87
Main Line Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit) ......... 88
Main Line Between ABS Actuator and Electric Unit
(Control Unit) and ICC Sensor Integrated Unit ....... 89
ECM Branch Line Circuit ......................................... 89
AWD Control Unit Branch Line Circuit .................... 90
AFS Control Unit Branch Line Circuit ...................... 91
BCM Branch Line Circuit ......................................... 91
LDW Camera Unit Branch Line Circuit ................... 92
TCM Branch Line Circuit ......................................... 93
NAVI Control Unit Branch Line Circuit .................... 93
AV Control Unit Branch Line Circuit ........................ 94
Data Link Connector Branch Line Circuit ................ 95
Intelligent Key Unit Branch Line Circuit ................... 95
Unified Meter and A/C Amp. Branch Line Circuit .... 96
Steering Angle Sensor Branch Line Circuit ............. 97
Low Tire Pressure Warning Control Unit Branch Line
Circuit ...................................................................... 97
RAS Control Unit Branch Line Circuit ..................... 98
Pre-Crash Seat Belt Control Unit Branch Line Circuit
... 99
Driver Seat Control Unit Branch Line Circuit ........... 99
ABS Actuator and Electric Unit (Control Unit) Branch
Line Circuit ............................................................100
ICC Sensor Integrated Unit Branch Line Circuit ...101
IPDM E/R Branch Line Circuit ...............................101
CAN Communication Circuit .................................102

LAN-10
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Example: Main Line Between Data Link Connector and ABS Actuator and Electric Unit (Con-
trol Unit) Open Circuit
SKIB8740E
Unit name Symptom
ECM Engine torque limiting is affected, and shift harshness increases.
BCM

Reverse warning chime does not sound.

The front wiper moves under continuous operation mode even though the front
wiper switch being in the intermittent position.
EPS control unit The steering effort increases.
Combination meter

The shift position indicator and OD OFF indicator turn OFF.

The speedometer is inoperative.

The odo/trip meter stops.
ABS actuator and electric unit (control unit) Normal operation.
TCM No impact on operation.
IPDM E/RWhen the ignition switch is ON,

The headlamps (Lo) turn ON.

The cooling fan continues to rotate.

TROUBLE DIAGNOSIS
LAN-11
[CAN FUNDAMENTAL]
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LAN
Revision: 2007 April2007 M35/M45
Example: CAN-H, CAN-L Harness Short Circuit
SKIB8741E
Unit name Symptom
ECM

Engine torque limiting is affected, and shift harshness increases.

Engine speed drops.
BCM

Reverse warning chime does not sound.

The front wiper moves under continuous operation mode even though the front
wiper switch being in the intermittent position.

The room lamp does not turn ON.

The engine does not start (if an error or malfunction occurs while turning the igni-
tion switch OFF.)

The steering lock does not release (if an error or malfunction occurs while turning
the ignition switch OFF.)
EPS control unit The steering effort increases.
Combination meter

The tachometer and the speedometer do not move.

Warning lamps turn ON.

Indicator lamps do not turn ON.
ABS actuator and electric unit (control unit) Normal operation.
TCM No impact on operation.
IPDM E/RWhen the ignition switch is ON,

The headlamps (Lo) turn ON.

The cooling fan continues to rotate.

HOW TO USE THIS SECTION
LAN-41
[CAN]
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LAN
Revision: 2007 April2007 M35/M45
HOW TO USE THIS SECTIONPFP:00008
CautionNKS004FN

This section describes information specific to a vehicle, sheets for trouble diagnosis, and inspection pro-
cedures.

For trouble diagnosis procedure, refer to LAN-17, "Trouble Diagnosis Procedure" .
Abbreviation ListNKS004FO
Abbreviations in CAN communication signal chart and the diagnosis sheet are as per the following list.
Abbreviation Unit nameSELECT SYSTEM
(CONSULT-II)CAN DIAG SUPPORT MNTR
(CONSULT-II)
4WD AWD control unit ALL MODE AWD/4WD AWD/4WD
ABS ABS actuator and electric unit (control unit) ABS VDC/TCS/ABS
ADP Driver seat control unit AUTO DRIVE POS. –
AFS AFS control unit ADAPTIVE LIGHT AFS
AVNAVI control unit
MULTI AVMULTI AV
DISPLAY
AV control unitMULTI AV
DISPLAY
BCM BCM BCM BCM/SEC
DLC Data link connector – –
ECM ECM ENGINE ECM
ICC ICC sensor integrated unit ICCICC
ICC/e4WD
I-KEY Intelligent Key unit INTELLIGENT KEY I-KEY
IPDM-E IPDM E/R IPDM E/R IPDM E/R
M&A Unified meter and A/C amp. METER A/C AMP METER/M&A
PSB Pre-crash seat belt control unit PRECRASH SEATBELT –
RAS RAS control unit RAS/HICAS RAS C/U
STRG Steering angle sensor – STRG
TCM TCM A/T TCM
TPMS Low tire pressure warning control unit AIR PRESSURE MONITOR TIRE-P
LANE LDW camera unit LDW –

TROUBLE DIAGNOSIS
LAN-45
[CAN]
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LAN
Revision: 2007 April2007 M35/M45
AFS control unit
0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF→ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.
BCM
0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF→ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.
LDW camera unit
0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF→ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
ADAPTIVE
LIGHTTRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0 ECM Signal receiving status from the ECM
METER/M&ASignal receiving status from the unified
meter and A/C amp.
TCM Signal receiving status from the TCM
STRGSignal receiving status from the steering
angle sensor
IPDM E/R Signal receiving status from the IPDM E/R
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
BCMTRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0 ECM Signal receiving status from the ECM
METER/M&ASignal receiving status from the unified
meter and A/C amp.
TCM Not used even though indicated
MULTI AVWith navigation system: Signal receiving
status from the NAVI control unit
OKOK
or
1 – 39
*UNKWN 0 Without navigation system: Signal receiv-
ing status from the AV control unit
IPDM E/R Signal receiving status from the IPDM E/R
TIRE-PSignal receiving status from the low tire
pressure warning control unit
I-KEYSignal receiving status from the Intelligent
Key unit
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
LDWTRANSMIT DIAG Not used even though indicated
ECM Signal receiving status from the ECM
OKOK
or
1 – 39
*UNKWN 0 VDC/TCS/ABSSignal receiving status from the ABS actu-
ator and electric unit (control unit)
BCM/SEC Signal receiving status from the BCM
TCM Signal receiving status from the TCM

LAN-48
[CAN]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
RAS control unit
0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF→ON)
*: An error count is erased at 40 automatically and becomes OK indication. And the self-diagnosis result is erased, too.
Pre-crash seat belt control unit
0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF→ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.
Driver seat control unit
NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
RAS/HICASTRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0 ECM Signal receiving status from the ECM
VDC/TCS/ABSSignal receiving status from the ABS actu-
ator and electric unit (control unit)
STRGSignal receiving status from the steering
angle sensor
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
PRECRASH
SEATBELTTRANSMIT DIAG Not used even though indicated
ECM Signal receiving status from the ECM
OKOK
or
1 – 39
*UNKWN 0 METER/M&ASignal receiving status from the unified
meter and A/C amp.
TCM Signal receiving status from the TCM
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT
AUTO DRIVE
POS.INITIAL DIAG Status of CAN controller OK NG
TRANSMIT DIAG Not used even though indicated
BCM/SEC Signal receiving status from the BCM
OK UNKWN METER/M&A Signal receiving status from the unified meter and A/C amp.
TCM Signal receiving status from the TCM

TROUBLE DIAGNOSIS
LAN-49
[CAN]
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LAN
Revision: 2007 April2007 M35/M45
ABS actuator and electric unit (control unit)
CAUTION:
Never replace the unit even when “NG” is indicated on the “INITIAL DIAG” at this stage. Follow the trouble diagnosis proce-
dures.
ICC sensor integrated unit
0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF→ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.
IPDM E/R
0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF→ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT
ABSINITIAL DIAG Status of CAN controller
OKNG
Caution
TRANSMIT DIAG Signal transmission status
UNKWN ECM Signal receiving status from the ECM
TCM Signal receiving status from the TCM
METER/M&A Not used even though indicated
STRG Signal receiving status from the steering angle sensor
OK UNKWN ICC Signal receiving status from the ICC sensor integrated unit
AWD/4WD Signal receiving status from the AWD control unit
RAS C/U Signal receiving status from the RAS control unit
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
ICCTRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0 ECM Signal receiving status from the ECM
VDC/TCS/ABSSignal receiving status from the ABS actu-
ator and electric unit (control unit)
METER/M&ASignal receiving status from the unified
meter and A/C amp.
BCM/SEC Signal receiving status from the BCM
TCM Signal receiving status from the TCM
STRG Not used even though indicated
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
IPDM E/RTRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0 ECM Signal receiving status from the ECM
BCM/SEC Signal receiving status from the BCM

LAN-52
[CAN]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
CAN Communication Signal ChartNKS004FV
Refer to LAN-15, "How to Use CAN Communication Signal Chart" for how to use CAN communication signal
chart.
TYPE 1/TYPE 2/TYPE 3/TYPE 4/TYPE 5/TYPE 6/TYPE 7
NOTE:
Refer to LAN-41, "
Abbreviation List" for the abbreviations of the connecting units.
T: Transmit R: Receive
Signals
ECM
AFS
*1
BCM
LANE
*2
TCM
AV
I-KEY
M&A
STRG
TPMS
RAS
*3
PSB
ADP
ABS
ICC
*4
IPDM-E
A/C compressor request signal TR
Accelerator pedal position signal T R R R
ASCD CRUISE lamp signal T R
ASCD OD cancel request signal T R
ASCD operation signal T R
ASCD SET lamp signal T R
Battery voltage signal T R
Closed throttle position signal T R R
Cooling fan speed request signal TR
Engine coolant temperature signal T R
Engine speed signal T R R R R R R
Engine status signal T R R R
Fuel consumption monitor signal T R R
ICC brake switch signal T R
ICC prohibition signal T R
ICC steering switch signal T R
Malfunctioning indicator lamp signal T R
Power generation command value signal TR
Stop lamp switch signalTR
RT
TR
Wide open throttle position signal T R
AFS OFF indicator signal T R
A/C switch signal R T
ACC signal T R R
Blower fan motor switch signal R T
Buzzer output signalTR
TR
RT
Day time running light request signal T R
Door lock/unlock status signal T R
Door switch signal T R R R R R
Door unlock signal T R
Front fog light request signal T R R
Front wiper request signal T R R
High beam request signal T R R

LAN-54
[CAN]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45

*1: Models with adaptive front-lighting system

*2: Models with lane departure warning

*3: Models with rear active steer

*4: Models with ICC system Seat belt buckle switch signal R T
Target A/C evaporator temperature signal R T
Vehicle speed signalRRR RRRT RR R
RRRRR TR
Steering angle sensor signal R T R R
Tire pressure data signal R T
Tire pressure signalRR T
TR
RAS signalTR
A/T shift schedule change demand signal R T
ABS malfunction signalTR
ABS operation signal TR
ABS warning lamp signal R T
Brake pressure control signalTR
Brake warning lamp signal R T
Side G sensor signal R T
SLIP indicator lamp signal R T
TCS malfunction signalTR
TCS operation signal TR
VDC malfunction signalTR
VDC OFF indicator lamp signal R T
VDC OFF switch signalTR
VDC operation signalTR
Deceleration degree commandment value signalRT
ICC OD cancel request signal R T
ICC operation signal R T
ICC warning lamp signal R T
Front wiper stop position signal R T
High beam status signal RT
Hood switch signal R T
Low beam status signal R R T
Rear window defogger control signal R R T
Starter relay status signal R TSignals
ECM
AFS
*1
BCM
LANE
*2
TCM
AV
I-KEY
M&A
STRG
TPMS
RAS
*3
PSB
ADP
ABS
ICC
*4
IPDM-E

TROUBLE DIAGNOSIS
LAN-55
[CAN]
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LAN
Revision: 2007 April2007 M35/M45
TYPE 8/TYPE 9/TYPE 10/TYPE 11
NOTE:
Refer to LAN-41, "
Abbreviation List" for the abbreviations of the connecting units.
T: Transmit R: Receive
Signals
ECM
4WD
AFS
*1
BCM
LANE
*2
TCM
AV
I-KEY
M&A
STRG
TPMS
PSB
ADP
ABS
ICC
*3
IPDM-E
A/C compressor request signal TR
Accelerator pedal position signal T R R R R
ASCD CRUISE lamp signal T R
ASCD OD cancel request signal T R
ASCD operation signal T R
ASCD SET lamp signal T R
Battery voltage signal T R
Closed throttle position signal T R R
Cooling fan speed request signal TR
Engine coolant temperature signal T R
Engine speed signal T R R R R R R
Engine status signal T R R R
Fuel consumption monitor signal T R R
ICC brake switch signal T R
ICC prohibition signal T R
ICC steering switch signal T R
Malfunctioning indicator lamp signal T R
Power generation command value signal TR
Snow mode switch signalTRR
RT
Stop lamp switch signalTR
RRT
TR
Wide open throttle position signal T R
AWD signal T R
AWD warning lamp signal T R
AFS OFF indicator signal T R
A/C switch signal R T
ACC signal T R R
Blower fan motor switch signal R T
Buzzer output signalTR
TR
RT
Day time running light request signal T R
Door lock/unlock status signal T R
Door switch signal T R R R R R
Door unlock signal T R
Front fog light request signal T R R
Front wiper request signal T R R
High beam request signal T R R