2007 INFINITI M35 unified meter control unit

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

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 –

LAN-44
[CAN]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
TROUBLE DIAGNOSISPFP:00004
CAN Diagnostic Support MonitorNKS004FT
Use “CAN DIAG SUPPORT MNTR” for detecting the root cause.
MONITOR ITEM LIST (CONSULT-II)
ECM
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.
AWD 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
ENGINETRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0 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
ICCSignal receiving status from the ICC sen-
sor integrated unit
HVAC Not used even though indicated
TCM Signal receiving status from the TCM OKOK
or
1 – 39
*UNKWN 0
EPS Not used even though indicated
IPDM E/R Signal receiving status from the IPDM E/R OKOK
or
1 – 39
*UNKWN 0
e4WD Not used even though indicated
AW D/4 WDSignal receiving status from the AWD con-
trol unitOKOK
or
1 – 39
*UNKWN 0
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT
ALL MODE AWD/
4WDINITIAL DIAG Status of CAN controller
OKNG
TRANSMIT DIAG Signal transmission status
UNKWN VDC/TCS/ABSSignal receiving status from the ABS actuator and electric unit
(control unit)
ECM Signal receiving status from the ECM
TCM Not used even though indicated
METER/M&A Signal receiving status from the unified meter and A/C amp. OK UNKWN

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-46
[CAN]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
TCM
NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
NAVI control unit, AV 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.
Intelligent Key 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
A/TINITIAL DIAG Status of CAN controller
OKNG
TRANSMIT DIAG Signal transmission status
UNKWN ECM Signal receiving status from the ECM
VDC/TCS/ABSSignal receiving status from the ABS actuator and electric unit
(control unit)
METER/M&A Signal receiving status from the unified meter and A/C amp.
ICC/e4WD Signal receiving status from the ICC sensor integrated unit
AWD/4WD Signal receiving status from the AWD control unit
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
MULTI AVTRANSMIT 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.
BCM/SEC Signal receiving status from the BCM
HVAC Not used even though indicated
IPDM E/R Signal receiving status from the IPDM E/R
OKOK
or
1 – 39
*UNKWN 0
TIRE-PSignal receiving status from the low tire
pressure warning control unit
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
INTELLIGENT
KEYTRANSMIT 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
IPDM E/R Signal receiving status from the IPDM E/R

TROUBLE DIAGNOSIS
LAN-47
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LAN
Revision: 2007 April2007 M35/M45
Unified meter and A/C amp.
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.
Low tire pressure warning 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.SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
METER A/C AMPTRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0 ECM Signal receiving status from the ECM
TCM Signal receiving status from the TCM
BCM/SEC Signal receiving status from the BCM
VDC/TCS/ABSSignal receiving status from the ABS actu-
ator and electric unit (control unit)
IPDM E/R Not used even though indicated
DISPLAYWith 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
I-KEYSignal receiving status from the Intelligent
Key unit
EPS Not used even though indicated
AW D/4W DSignal receiving status from the AWD con-
trol unitOKOK
or
1 – 39
*UNKWN 0
e4WD Not used even though indicated
ICCSignal receiving status from the ICC sen-
sor integrated unitOKOK
or
1 – 39
*UNKWN 0
LANE KEEP
Not used even though indicated
TIRE-P
AFSSignal receiving status from the AFS con-
trol unitOKOK
or
1 – 39
*UNKWN 0
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
AIR PRESSURE
MONITORTRANSMIT 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)

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
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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