2007 INFINITI FX35 engine

LAN-10
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
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/R When 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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Revision: 2006 July 2007 FX35/FX45
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 is OFF.)

The steering lock does not release (if an error or malfunction occurs while turning
the ignition switch is 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/R When the ignition switch is ON,

The headlamps (Lo) turn ON.

The cooling fan continues to rotate.

TROUBLE DIAGNOSES WORK FLOW LAN-27
[CAN FUNDAMENTAL]
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Revision: 2006 July 2007 FX35/FX45
2. CAN DIAG SUPPORT MNTR: Check each item on “CAN DIAG SUPPORT MNTR”. Draw a line on the
diagnosis sheet to indicate the error circuit.
a. Reception item of “ENGINE”: On “TCM”, “UNKWN” is indicated. This means ECM cannot receive the sig- nal from TCM. Draw a line to indicate an error between ECM and TCM (line 2-a in the figure).
NOTE:
If “UNKWN” is indicated on “TRANSMIT DIAG”, then the control unit cannot transmit CAN communication
signal to each unit. Draw a line between the control unit and the splice.
b. Reception item of “ADAPTIVE LIGHT”: On “TCM”, “UNKWN” is indicated. This means AFS cannot receive the signal from TCM. Draw a line to indicate an error between AFS and TCM (line 2-b in the fig-
ure).
c. Reception item of “MULTI AV”: “UNKWN” is not indicated. This indicates normal communication between AV and its receiving units. Do not draw any line.
SKIB8725E

LAN-34
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSES WORK FLOW
Revision: 2006 July 2007 FX35/FX45
2. CAN DIAG SUPPORT MNTR (with PAST): Check the CAN DIAG SUPPORT MNTR (with PAST) of units
indicating “U1000” or “U1001” on SELF-DIAG RESULTS. Draw a line on the diagnosis sheet to indicate
the possible error circuit.
NOTE:
For the details of each indication on CAN DIAG SUPPORT MNTR, refer to LAN-44, "
CAN Diagnostic Sup-
port Monitor" .
a. Reception item of “ENGINE”: “VDC/TCS/ABS”, “3” is indicated in the “PAST”. This means ECM could not receive the signal from ABS in the past. Draw a line between ECM and ABS (line 2-a in the figure).
b. Reception item of “METER”: “VDC/TCS/ABS”, “3” is indicated in the “PAST”. This means M&A could not receive the signal from ABS in the past. Draw a line between M&A and ABS (line 2-b in the figure).
c. Reception item of “TRANSMISSION”: “VDC/TCS/ABS”, “3” is indicated in the “PAST”. This means TCM could not receive the signal from ABS in the past. Draw a line between TCM and ABS (line 2-c in the fig-
ure).
SKIB8732E

LAN-36
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSES WORK FLOW
Revision: 2006 July 2007 FX35/FX45
4. Search for the possible cause using CAN communication signal chart using information from the interview
with the customer.
NOTE:
For the details of CAN communication signal, refer to LAN-50, "
CAN Communication Signal Chart" .
a. ABS warning lamp turned ON and speedometer did not move: This means that “ABS warning lamp signal” and “Vehicle speed signal” could not communicate between M&A and ABS (4-a in the figure).
b. The tachometer moved normally: This means that “Engine speed signal” could communicate normally between ECM and M&A (4-b in the figure).
SKIB8895E

HOW TO USE THIS SECTION LAN-41
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Revision: 2006 July 2007 FX35/FX45
HOW TO USE THIS SECTIONPFP:00008
CautionNKS004ML

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

For trouble diagnosis procedure LAN-17, "Trouble Diagnosis Procedure" .
Abbreviation ListNKS004MM
Abbreviations in CAN communication signal chart, and the diagnosis sheet are as per the following list.
Abbreviation Unit name SELECT SYSTEM
(CONSULT-II) CAN DIAG SUPPORT MNTR
(CONSULT-II)
4WD AWD control unit ALL MODE AWD/4WD AWD/4WD
A-BAG Air bag diagnosis sensor unit AIR BAG –
ABS ABS actuator and electric unit (control unit) ABS VDC/TCS/ABS
ADP Driver seat control unit AUTO DRIVE POS. –
BCM BCM BCM BCM/SEC
DISP Display control unit – DISPLAY
DLC Data link connector – –
ECM ECM ENGINE ECM
ICC ICC unit ICC ICC
ICC/e4WD
I-KEY Intelligent Key unit INTELLIGENT KEY I-KEY
IPDM-E IPDM E/R IPDM E/R IPDM E/R LANE LDW camera unit LDW –
LASER ICC sensor – ICC SENSOR M&A Unified meter and A/C amp. METER A/C AMP METER/M&A
STRG Steering angle sensor – STRG TCM TCM A/T TCM

LAN-44
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
TROUBLE DIAGNOSISPFP:00004
CAN Diagnostic Support MonitorNKS004NN
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-
TEM CAN DIAG SUP-
PORT MNTR Description Normal Error
PRSNT PAST PRSNT PAST
ENGINE TRANSMIT DIAG Signal transmission status
OK OK
or
1 – 39
*UNKWN 0
VDC/TCS/ABS
Signal receiving status from the ABS actu-
ator and electric unit (control unit)
METER/M&A Signal receiving status from the unified
meter and A/C amp.
BCM/SEC Signal receiving status from the BCM
ICC Signal receiving status from the ICC unit
HVAC Not used even though indicated
TCM Signal receiving status from the TCM OK OK
or
1 – 39
*UNKWN 0
EPS Not used even though indicated
IPDM E/R Signal receiving status from the IPDM E/R OK OK
or
1 – 39
*UNKWN 0
e4WD Not used even though indicated
AW D/4 WD Signal receiving status from the AWD con-
trol unit OK OK
or
1 – 39
*UNKWN 0
SELECT SYS- TEM CAN DIAG SUP-
PORT MNTR Description Normal Error
PRSNT
ALL MODE AWD/
4WD INITIAL DIAG Status of CAN controller
OK NG
TRANSMIT DIAG Signal transmission status
UNKWN
VDC/TCS/ABS Signal 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-49
[CAN]
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Revision: 2006 July 2007 FX35/FX45
CAN System Specification ChartNKS004NO
Determine CAN system type from the following specification chart. Then choose the correct diagnosis sheet.
NOTE:
Refer to LAN-19, "
CHECK OF CAN SYSTEM TYPE (HOW TO USE CAN SYSTEM TYPE SPECIFICATION
CHART)" for how to use CAN system specification chart.
VEHICLE EQUIPMENT IDENTIFICATION INFORMATION
NOTE:
Check CAN system type from the vehicle shape and equipment.
Body type Wagon
Axle 2WD AWD
Engine VQ35DE VK45DE
Transmission A/T
Brake control VDC
ICC system ×××
Intelligent Key system ×× ××××
Lane departure warning system ×××
CAN system type 12345656
Diagnosis sheet LAN-69
LAN-70LAN-71LAN-72LAN-73LAN-74LAN-73LAN-74
CAN communication signal chart LAN-50, "TYPE 1/
TYPE 2"
LAN-52,
"TYPE 3"
LAN-54, "TYPE 4/
TYPE 5"
LAN-57,
"TYPE 6"
LAN-54,
"TYPE 4/
TYPE 5"
LAN-57,
"TYPE 6"
PKID0615E