ecm INFINITI M35 2007 Factory Service Manual

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ALPHABETICAL INDEX
Camshaft position sensor (PHASE) EC-371, EC-1082
Camshaft(VK45DE) ......................................... EM-215
Camshaft(VQ35DE) ........................................... EM-85
CAN .................................................................. DI-109
CAN - Wiring diagram .......... EC-162, EC-866, AT-106
CAN (Controller Area Network) ... SB-5, BL-26, BL-59,
BL-221
, GW-19, GW-73, GW-95, SE-16
CAN communication ........... EC-161, EC-164, EC-740,
EC-865
, EC-868, AT-32, AT-105, TF-13, TF-32, SB-5,
BL-26
, BL-59, BL-221, GW-19, GW-73, GW-95, SE-16,
WW-11
Canister-See EVAP canister ............... EC-42, EC-744
Center bearing assembly (propeller shaft) ........ PR-12
Center bearing disassembly (propeller shaft) .... PR-11
CHARGE - Wiring diagram ................................ SC-22
Charging system ................................................ SC-20
Chassis and body maintenance ........................ MA-29
CHIME - Wiring diagram ..................................... DI-63
CIGAR - Wiring diagram .................................. WW-50
Cigarette lighter ............................................... WW-50
Circuit breaker ................................................... PG-17
Clock ................................................................. DI-107
CLOCK - Wiring diagram .................................. DI-107
Closed loop control .............................. EC-32, EC-734
Closed loop control (Bank 1) ........... EC-496, EC-1211
Closed loop control (Bank 2) ........... EC-496, EC-1211
Collision diagnosis ........................................... SRS-54
Combination lamp, front, removal and installation ........
LT-75
Combination lamp, rear, removal and installation ........
LT-265
Combination meter ............................................... DI-5
COMPAS - Wiring diagram ............................... DI-105
Compass .......................................................... DI-102
Component Location (auto A/C) ...................... ATC-42
Compression pressure(VK45DE) .................... EM-235
Compression pressure(VQ35DE) .................... EM-102
Compressor special service tool ...................... ATC-16
Condenser ..................................................... ATC-164
Connecting rod bearing clearance(VK45DE) .. EM-275
Connecting rod bushing clearance .................. EM-143
Connecting rod bushing clearance(VK45DE) .. EM-271
Connecting rod(VK45DE) ................................ EM-271
Connecting rod(VQ35DE) ................................ EM-141
CONSULT-II Reference value (A/T) .................. AT-90
Control units (terminal arrangement) ............... PG-107
Control valve (A/T) ............................................. AT-38
Controller Area Network (CAN) ... SB-5, BL-26, BL-59,
BL-221
, GW-19, GW-73, GW-95, SE-16
Converter housing installation ............ AT-277, AT-280
COOL/F - Wiring diagram ................ EC-502, EC-1217
Coolant replacement(VQ35DE) ......................... MA-15
Cooling circuit (engine)(VK45DE) ...................... CO-38
Cooling circuit (engine)(VQ35DE) ....................... CO-9
Cooling fan motor ............................ EC-509, EC-1224
Cooling fan(VK45DE) ........................................ CO-51
Cooling fan(VQ35DE) ........................................ CO-22
Cowl top ............................................................... EI-18
Cowl top cover ..................................................... EI-18
Crankcase ventilation system - See Positive crankcase
ventilation ............................................. EC-51
, EC-753
Crankshaft position sensor (POS) ... EC-364, EC-1075
Crankshaft(VK45DE) ...................................... EM-253
Crankshaft(VQ35DE) ...................................... EM-141
Crash zone sensor .......................................... SRS-49
CUR/SE - Wiring diagram .. EC-526, EC-533, EC-540,
EC-547
, EC-1239, EC-1246, EC-1253, EC-1260
Cylinder block boring(VK45DE) ...................... EM-274
Cylinder block(VK45DE) ................................. EM-252
Cylinder block(VQ35DE) ................................. EM-124
Cylinder head bolt tightening(VK45DE) .......... EM-237
Cylinder head bolt tightening(VQ35DE) .......... EM-105
Cylinder head(VK45DE) ................................. EM-235
Cylinder head(VQ35DE) ................................. EM-102
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D/LOCK - Wiring diagram .................................. BL-28
Daytime light system ........................................... LT-78
Daytime running light - See Daytime light system LT-78
DEF - Wiring diagram ............................ SB-7, SE-119
Diagnosis sensor unit ..................................... SRS-52
Diagnostic trouble code (DTC) for OBD system EC-16,
EC-59
, EC-718, EC-761
Direct clutch solenoid valve ............... AT-155, AT-157
Display and amp.assembly ............... ATC-54, ATC-67
Door glass ........................................... GW-61, GW-65
Door glass Fitting Adjustment(Front) ................ GW-64
Door glass Fitting Adjustment(Rear) ................. GW-68
Door lock .......................................................... BL-194
Door mirror ...................................................... GW-118
Door trim ............................................................. EI-34
Door, front ........................................... BL-188, GW-61
Door, rear ............................................ BL-188, GW-65
Drive belt inspection ......................................... MA-22
Drive belt(VK45DE) ........................................ EM-174
Drive belt(VQ35DE) .......................................... EM-16
Drive shaft ......................................................... MA-38
Drive shaft (rear) ............................................... RAX-8
Driver air bag .................................................. SRS-42
DTRL - Wiring diagram ....................................... LT-83
Duct and grilles .............................................. ATC-143
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ECM power supply EC-154
, EC-479, EC-858, EC-1186
ECM/PW - Wiring diagram ............... EC-480, EC-1187
ECTS - Wiring diagram ...................... EC-216, EC-928
Electric sunroof .................................................. RF-10
Electric throttle control actuator ........ EC-604, EC-615,
EC-1322
, EC-1334
Electric throttle control actuator (VK45DE) ..... EM-179
Electric throttle control actuator (VQ35DE) ....... EM-21
Electrical load signal circuit .............. EC-667, EC-1387
Electrical unit ................................................... PG-107
Electrical units location ...................................... PG-98
Electronic ignition (EI) system ............. EC-33, EC-735
Engine control module (ECM) .......... EC-483, EC-1190

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-8
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Symptom When Error Occurs in CAN Communication SystemNKS004HD
In CAN communication system, multiple units mutually transmit and receive signals. Each unit cannot transmit
and receive signals if any error occurs on CAN communication line. Under this condition, multiple control units
related to the root cause malfunction or go into fail-safe mode.
ERROR EXAMPLE
NOTE:

Each vehicle differs in symptom of each unit under fail-safe mode and CAN communication line wiring.

Refer to LAN-41, "Abbreviation List" for the unit abbreviation.
Example: TCM branch line open circuit
SKIB8738E
Unit name Symptom
ECM Engine torque limiting is affected, and shift harshness increases.
BCM Reverse warning chime does not sound.
EPS control unit Normal operation.
Combination meter

Shift position indicator and OD OFF indicator turn OFF.

Warning lamps turn ON.
ABS actuator and electric unit (control unit) Normal operation.
TCM No impact on operation.
IPDM E/R Normal operation.

TROUBLE DIAGNOSIS
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Example: Data link connector branch line open circuit
NOTE:

When data link connector branch line is open, transmission and reception of CAN communication signals
are not affected. Therefore, no symptoms occur. However, be sure to repair malfunctioning circuit.

When data link connector branch line is open, the screen-display of the CONSULT-II “SELECT SYSTEM”
screen may be the same as when the CAN communication line has short-circuit. However, symptoms dif-
fer depending on the case. See below chart for the differences.
SKIB8739E
Unit name Symptom
ECM
Normal operation. BCM
EPS control unit
Combination meter
ABS actuator and electric unit (control unit)
TCM
IPDM E/R
SELECT SYSTEM
(CONSULT-II)Difference of symptom
Data link connector branch line open cir-
cuit
All Diag on CAN units are not
indicated.Normal operation.
CAN-H, CAN-L harness short-circuitMost of the units which are connected to the CAN
communication system enter fail-safe mode or are
deactivated.

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
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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.

LAN-12
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Self-DiagnosisNKS004HE
DTCSelf-diagnosis item
(CONSULT-II indication)DTC detection condition Inspection/Action
U1000 CAN COMM CIRCUITWhen ECM is not transmitting or receiving CAN
communication signal of OBD (emission-related
diagnosis) for 2 seconds or more.
Refer to LAN-15,
"TROUBLE DIAG-
NOSES WORK FLOW" . When a control unit (except for ECM) is not
transmitting or receiving CAN communication
signal for 2 seconds or more.
U1001 CAN COMM CIRCUITWhen ECM is not transmitting or receiving CAN
communication signal other than OBD (emis-
sion-related diagnosis) for 2 seconds or more.
U1002 SYSTEM COMMWhen a control unit is not transmitting or receiv-
ing CAN communication signal for 2 seconds or
less.Start the inspection.
Refer to the applicable
section of the indicated
control unit.
U1010 CONTROL UNIT [CAN]When an error is detected during the initial diag-
nosis for CAN controller of each control unit.Replace the control unit
indicating “U1010”.

TROUBLE DIAGNOSES WORK FLOW
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Trouble Diagnosis ProcedureNKS004HJ
INTERVIEW WITH CUSTOMER
Interview with the customer is important to detect the root cause of CAN communication system errors and to
understand vehicle condition and symptoms for proper trouble diagnosis.
Points in interview

What: Parts name, system name

When: Date, Frequency

Where: Road condition, Place

In what condition: Driving condition/environment

Result: Symptom
NOTE:

Check normal units as well as error symptoms.
–Example: Circuit between ECM and the combination meter is judged normal if the customer indicates
tachometer functions normally.

When a CAN communication system error is present, multiple control units may malfunction or go into fail-
safe mode.

Indication of the combination meter is important to detect the root cause because it is the most obvious to
the customer, and it performs CAN communication with many units.
SKIB8717E

TROUBLE DIAGNOSES WORK FLOW
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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-30
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSES WORK FLOW
Revision: 2007 April2007 M35/M45
i. Reception item of “IPDM E/R”: “UNKWN” is not indicated. This indicates normal communication between
IPDM-E and its receiving units. Do not draw any line.
3. Based on information received from “CAN DIAG SUPPORT MNTR”, place a check mark on the known
good CAN communication line between ECM and IPDM-E.
a. Through the previous procedure, the circuit between ADP splice and TCM has the most amount of lines
(shade 3-a in the figure).
b. Place a check mark on the known good lines to establish the error circuit.
Reception item of “IPDM E/R”: On “ECM”, “OK” is indicated. IPDM-E communicates normally with ECM.
Put a check mark on the normal circuit between ECM and IPDM-E (check mark 3-b in the figure).
SKIB8728E