B engine INFINITI M35 2007 Factory Service Manual

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Revision: 2007 April2007 M35/M45 DTC Confirmation Procedure ............................... 438
Wiring Diagram .................................................... 439
Diagnostic Procedure ........................................... 440
Component Inspection ......................................... 444
DTC P0455 EVAP CONTROL SYSTEM ................ 445
On Board Diagnosis Logic ................................... 445
DTC Confirmation Procedure ............................... 446
Diagnostic Procedure ........................................... 447
DTC P0456 EVAP CONTROL SYSTEM ................ 453
On Board Diagnosis Logic ................................... 453
DTC Confirmation Procedure ............................... 454
Overall Function Check ........................................ 455
Diagnostic Procedure ........................................... 456
DTC P0460 FUEL LEVEL SENSOR ...................... 462
Component Description ........................................ 462
On Board Diagnosis Logic ................................... 462
DTC Confirmation Procedure ............................... 462
Diagnostic Procedure ........................................... 463
Removal and Installation ...................................... 463
DTC P0461 FUEL LEVEL SENSOR ...................... 464
Component Description ........................................ 464
On Board Diagnosis Logic ................................... 464
Overall Function Check ........................................ 464
Diagnostic Procedure ........................................... 465
Removal and Installation ...................................... 465
DTC P0462, P0463 FUEL LEVEL SENSOR CIR-
CUIT ........................................................................ 466
Component Description ........................................ 466
On Board Diagnosis Logic ................................... 466
DTC Confirmation Procedure ............................... 466
Diagnostic Procedure ........................................... 467
Removal and Installation ...................................... 467
DTC P0500 VSS ..................................................... 468
Description ........................................................... 468
On Board Diagnosis Logic ................................... 468
DTC Confirmation Procedure ............................... 468
Overall Function Check ........................................ 469
Diagnostic Procedure ........................................... 469
DTC P0506 ISC SYSTEM ....................................... 470
Description ........................................................... 470
On Board Diagnosis Logic ................................... 470
DTC Confirmation Procedure ............................... 470
Diagnostic Procedure ........................................... 471
DTC P0507 ISC SYSTEM ....................................... 472
Description ........................................................... 472
On Board Diagnosis Logic ................................... 472
DTC Confirmation Procedure ............................... 472
Diagnostic Procedure ........................................... 473
DTC P0550 PSP SENSOR ..................................... 474
Component Description ........................................ 474
CONSULT-II Reference Value in Data Monitor Mode
. 474
On Board Diagnosis Logic ................................... 474
DTC Confirmation Procedure ............................... 474
Wiring Diagram .................................................... 475
Diagnostic Procedure ........................................... 476
Component Inspection ......................................... 478
Removal and Installation ...................................... 478DTC P0603 ECM POWER SUPPLY .......................479
Component Description ........................................479
On Board Diagnosis Logic ....................................479
DTC Confirmation Procedure ...............................479
Wiring Diagram .....................................................480
Diagnostic Procedure ...........................................481
DTC P0605 ECM .....................................................483
Component Description ........................................483
On Board Diagnosis Logic ....................................483
DTC Confirmation Procedure ...............................483
Diagnostic Procedure ...........................................484
DTC P0643 SENSOR POWER SUPPLY ................486
On Board Diagnosis Logic ....................................486
DTC Confirmation Procedure ...............................486
Wiring Diagram .....................................................487
Diagnostic Procedure ...........................................489
DTC P0850 PNP SWITCH ......................................491
Component Description ........................................491
CONSULT-II Reference Value in Data Monitor Mode
.491
On Board Diagnosis Logic ....................................491
DTC Confirmation Procedure ...............................491
Overall Function Check ........................................492
Wiring Diagram .....................................................493
Diagnostic Procedure ...........................................494
DTC P1148, P1168 CLOSED LOOP CONTROL ....496
On Board Diagnosis Logic ....................................496
DTC P1211 TCS CONTROL UNIT ..........................497
Description ............................................................497
On Board Diagnosis Logic ....................................497
DTC Confirmation Procedure ...............................497
Diagnostic Procedure ...........................................497
DTC P1212 TCS COMMUNICATION LINE ............498
Description ............................................................498
On Board Diagnosis Logic ....................................498
DTC Confirmation Procedure ...............................498
Diagnostic Procedure ...........................................498
DTC P1217 ENGINE OVER TEMPERATURE ........499
Description ............................................................499
CONSULT-II Reference Value in Data Monitor Mode
.500
On Board Diagnosis Logic ....................................500
Overall Function Check ........................................500
Wiring Diagram .....................................................502
Diagnostic Procedure ...........................................504
Main 12 Causes of Overheating ...........................507
Component Inspection ..........................................509
DTC P1220 FUEL PUMP CONTROL MODULE
(FPCM) ....................................................................510
Description ............................................................510
CONSULT-II Reference Value in Data Monitor Mode
.510
On Board Diagnosis Logic ....................................510
DTC Confirmation Procedure ...............................511
Wiring Diagram .....................................................512
Diagnostic Procedure ...........................................513
Component Inspection ..........................................517
DTC P1225 TP SENSOR ........................................518
Component Description ........................................518

EC-8Revision: 2007 April2007 M35/M45 .683
Wiring Diagram .....................................................684
Diagnostic Procedure ...........................................685
Component Inspection ..........................................689
IGNITION SIGNAL ..................................................691
Component Description ........................................691
Wiring Diagram .....................................................692
Diagnostic Procedure ...........................................697
Component Inspection ..........................................702
Removal and Installation ......................................703
REFRIGERANT PRESSURE SENSOR ..................704
Component Description ........................................704
Wiring Diagram .....................................................705
Diagnostic Procedure ...........................................706
Removal and Installation ......................................708
SNOW MODE SWITCH ...........................................709
Description ............................................................709
CONSULT-II Reference Value in the Data Monitor
Mode .....................................................................709
Wiring Diagram .....................................................710
Diagnostic Procedure ...........................................711
Component Inspection ..........................................713
MIL AND DATA LINK CONNECTOR ......................714
Wiring Diagram .....................................................714
SERVICE DATA AND SPECIFICATIONS (SDS) ....716
Fuel Pressure .......................................................716
Idle Speed and Ignition Timing .............................716
Calculated Load Value ..........................................716
Mass Air Flow Sensor ...........................................716
Intake Air Temperature Sensor .............................716
Engine Coolant Temperature Sensor ...................716
Fuel Tank Temperature Sensor ............................716
Crankshaft Position Sensor (POS) .......................716
Camshaft Position Sensor (PHASE) ....................716
A/F Sensor 1 Heater .............................................716
Heated Oxygen Sensor 2 Heater .........................717
Throttle Control Motor ...........................................717
Fuel Injector ..........................................................717
Fuel Pump ............................................................717
VK45DE
INDEX FOR DTC .....................................................718
DTC No. Index ......................................................718
Alphabetical Index ................................................722
PRECAUTIONS .......................................................726
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................726
Precautions for Procedures without Cowl Top Cover .726
On Board Diagnostic (OBD) System of Engine and
A/T ........................................................................726
Precaution ............................................................727
PREPARATION .......................................................730
Special Service Tools ...........................................730
Commercial Service Tools ....................................731
ENGINE CONTROL SYSTEM ................................732
System Diagram ...................................................732
Multiport Fuel Injection (MFI) System ...................733Electronic Ignition (EI) System ..............................735
Fuel Cut Control (At No Load and High Engine
Speed) ..................................................................736
AIR CONDITIONING CUT CONTROL ....................737
Input/Output Signal Chart .....................................737
System Description ...............................................737
AUTOMATIC SPEED CONTROL DEVICE (ASCD) .738
System Description ...............................................738
Component Description ........................................739
CAN COMMUNICATION .........................................740
System Description ...............................................740
EVAPORATIVE EMISSION SYSTEM .....................741
Description ............................................................741
Component Inspection ..........................................744
Removal and Installation .......................................745
How to Detect Fuel Vapor Leakage ......................745
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ....................................................................748
System Description ...............................................748
Diagnostic Procedure ............................................749
Component Inspection ..........................................751
POSITIVE CRANKCASE VENTILATION ................753
Description ............................................................753
Component Inspection ..........................................753
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-
NATS) ......................................................................755
Description ............................................................755
ON BOARD DIAGNOSTIC (OBD) SYSTEM ...........756
Introduction ...........................................................756
Two Trip Detection Logic .......................................756
Emission-Related Diagnostic Information .............757
Malfunction Indicator Lamp (MIL) .........................772
OBD System Operation Chart ...............................774
BASIC SERVICE PROCEDURE .............................780
Basic Inspection ....................................................780
Idle Speed and Ignition Timing Check ..................785
Procedure After Replacing ECM ...........................787
VIN Registration ....................................................787
Accelerator Pedal Released Position Learning .....788
Throttle Valve Closed Position Learning ...............788
Idle Air Volume Learning .......................................788
Fuel Pressure Check ............................................790
TROUBLE DIAGNOSIS ..........................................792
Trouble Diagnosis Introduction .............................792
DTC Inspection Priority Chart ...............................798
Fail-Safe Chart ......................................................800
Symptom Matrix Chart ..........................................801
Engine Control Component Parts Location ...........805
Vacuum Hose Drawing .........................................814
Circuit Diagram .....................................................815
ECM Harness Connector Terminal Layout ............817
ECM Terminals and Reference Value ...................817
CONSULT-II Function (ENGINE) ..........................826
Generic Scan Tool (GST) Function .......................838
CONSULT-II Reference Value in Data Monitor .....841
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................845
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .847
Description ............................................................847

EC-12Revision: 2007 April2007 M35/M45 DTC Confirmation Procedure ..............................11 4 6
Wiring Diagram ....................................................11 4 7
Diagnostic Procedure ..........................................11 4 8
Component Inspection .........................................11 5 2
DTC P0455 EVAP CONTROL SYSTEM ................115 3
On Board Diagnosis Logic ...................................11 5 3
DTC Confirmation Procedure ..............................11 5 4
Diagnostic Procedure ..........................................11 5 5
DTC P0456 EVAP CONTROL SYSTEM ................116 0
On Board Diagnosis Logic ...................................11 6 0
DTC Confirmation Procedure ..............................11 6 1
Overall Function Check .......................................11 6 2
Diagnostic Procedure ..........................................11 6 3
DTC P0460 FUEL LEVEL SENSOR ......................116 9
Component Description .......................................11 6 9
On Board Diagnosis Logic ...................................11 6 9
DTC Confirmation Procedure ..............................11 6 9
Diagnostic Procedure ..........................................11 7 0
Removal and Installation .....................................11 7 0
DTC P0461 FUEL LEVEL SENSOR ......................117 1
Component Description .......................................11 7 1
On Board Diagnosis Logic ...................................11 7 1
Overall Function Check .......................................11 7 1
Diagnostic Procedure ..........................................11 7 2
Removal and Installation .....................................11 7 2
DTC P0462, P0463 FUEL LEVEL SENSOR CIR-
CUIT .......................................................................117 3
Component Description .......................................11 7 3
On Board Diagnosis Logic ...................................11 7 3
DTC Confirmation Procedure ..............................11 7 3
Diagnostic Procedure ..........................................11 7 4
Removal and Installation .....................................11 7 4
DTC P0500 VSS .....................................................117 5
Description ...........................................................11 7 5
On Board Diagnosis Logic ...................................11 7 5
DTC Confirmation Procedure ..............................11 7 5
Overall Function Check .......................................11 7 6
Diagnostic Procedure ..........................................11 7 6
DTC P0506 ISC SYSTEM ......................................117 7
Description ...........................................................11 7 7
On Board Diagnosis Logic ...................................11 7 7
DTC Confirmation Procedure ..............................11 7 7
Diagnostic Procedure ..........................................11 7 8
DTC P0507 ISC SYSTEM ......................................117 9
Description ...........................................................11 7 9
On Board Diagnosis Logic ...................................11 7 9
DTC Confirmation Procedure ..............................11 7 9
Diagnostic Procedure ..........................................11 8 0
DTC P0550 PSP SENSOR .....................................118 1
Component Description .......................................11 8 1
CONSULT-II Reference Value in Data Monitor Mode
11 8 1
On Board Diagnosis Logic ...................................11 8 1
DTC Confirmation Procedure ..............................11 8 1
Wiring Diagram ....................................................11 8 2
Diagnostic Procedure ..........................................11 8 3
Component Inspection .........................................11 8 5
Removal and Installation .....................................11 8 5DTC P0603 ECM POWER SUPPLY .......................11 86
Component Description .......................................11 8 6
On Board Diagnosis Logic ...................................11 8 6
DTC Confirmation Procedure ...............................11 8 6
Wiring Diagram ....................................................11 8 7
Diagnostic Procedure ...........................................11 8 8
DTC P0605 ECM ....................................................11 90
Component Description .......................................11 9 0
On Board Diagnosis Logic ...................................11 9 0
DTC Confirmation Procedure ...............................11 9 0
Diagnostic Procedure ...........................................11 9 1
DTC P0643 SENSOR POWER SUPPLY ...............11 93
On Board Diagnosis Logic ...................................11 9 3
DTC Confirmation Procedure ...............................11 9 3
Wiring Diagram ....................................................11 9 4
Diagnostic Procedure ...........................................11 9 6
DTC P0850 PNP SWITCH ......................................11 98
Component Description .......................................11 9 8
CONSULT-II Reference Value in Data Monitor Mode
11 9 8
On Board Diagnosis Logic ...................................11 9 8
DTC Confirmation Procedure ...............................11 9 8
Overall Function Check ........................................11 9 9
Wiring Diagram ....................................................1200
Diagnostic Procedure ...........................................1201
DTC P1140, P1145 IVT CONTROL POSITION SEN-
SOR ........................................................................1203
Component Description .......................................1203
CONSULT-II Reference Value in Data Monitor Mode
1203
On Board Diagnosis Logic ...................................1203
DTC Confirmation Procedure ...............................1203
Wiring Diagram ....................................................1204
Diagnostic Procedure ...........................................1207
Component Inspection .........................................1210
Removal and Installation ......................................1210
DTC P1148, P1168 CLOSED LOOP CONTROL ...1211
On Board Diagnosis Logic ...................................1211
DTC P1211 TCS CONTROL UNIT .........................1212
Description ...........................................................1212
On Board Diagnosis Logic ...................................1212
DTC Confirmation Procedure ...............................1212
Diagnostic Procedure ...........................................1212
DTC P1212 TCS COMMUNICATION LINE ............1213
Description ...........................................................1213
On Board Diagnosis Logic ...................................1213
DTC Confirmation Procedure ...............................1213
Diagnostic Procedure ...........................................1213
DTC P1217 ENGINE OVER TEMPERATURE .......1214
Description ...........................................................1214
CONSULT-II Reference Value in Data Monitor Mode
1215
On Board Diagnosis Logic ...................................1215
Overall Function Check ........................................1215
Wiring Diagram ....................................................1217
Diagnostic Procedure ...........................................1219
Main 13 Causes of Overheating ..........................1223
Component Inspection .........................................1224
DTC P1220 FUEL PUMP CONTROL MODULE

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Revision: 2007 April2007 M35/M45 Wiring Diagram ...................................................1390
Diagnostic Procedure ..........................................1391
Component Inspection ........................................1394
Removal and Installation .....................................1394
FUEL PUMP ..........................................................1395
Description ..........................................................1395
CONSULT-II Reference Value in Data Monitor Mode
1395
Wiring Diagram ...................................................1396
Diagnostic Procedure ..........................................1397
Component Inspection ........................................1401
Removal and Installation .....................................1402
ICC BRAKE SWITCH ............................................1403
Component Description .......................................1403
CONSULT-II Reference Value in Data Monitor Mode
1403
Wiring Diagram ...................................................1404
Diagnostic Procedure ..........................................1405
Component Inspection ........................................1410
IGNITION SIGNAL .................................................1411
Component Description .......................................1411
Wiring Diagram ...................................................1412
Diagnostic Procedure ..........................................1417
Component Inspection ........................................1421
Removal and Installation .....................................1423
REFRIGERANT PRESSURE SENSOR ................1424
Component Description .......................................1424
Wiring Diagram ...................................................1425Diagnostic Procedure ..........................................1426
Removal and Installation .....................................1428
VIAS .......................................................................1429
Description ...........................................................1429
CONSULT-II Reference Value in Data Monitor Mode
1430
Wiring Diagram ....................................................1431
Diagnostic Procedure ..........................................1433
Component Inspection .........................................1436
Removal and Installation .....................................1437
MIL AND DATA LINK CONNECTOR .....................1438
Wiring Diagram ....................................................1438
SERVICE DATA AND SPECIFICATIONS (SDS) ...1440
Fuel Pressure ......................................................1440
Idle Speed and Ignition Timing ............................1440
Calculated Load Value .........................................1440
Mass Air Flow Sensor ..........................................1440
Intake Air Temperature Sensor ............................1440
Engine Coolant Temperature Sensor ..................1440
Fuel Tank Temperature Sensor ...........................1440
Crankshaft Position Sensor (POS) ......................1440
Camshaft Position Sensor (PHASE) ...................1440
A/F Sensor 1 Heater ............................................1440
Heated Oxygen Sensor 2 Heater ........................1441
Throttle Control Motor ..........................................1441
Fuel Injector .........................................................1441
Fuel Pump ...........................................................1441

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INDEX FOR DTC
Revision: 2007 April2007 M35/M45
P0456 0456 EVAP VERY SML LEAKEC-453
P0460 0460 FUEL LEV SEN SLOSHEC-462
P0461 0461 FUEL LEVEL SENSOREC-464
P0462 0462 FUEL LEVL SEN/CIRCEC-466
P0463 0463 FUEL LEVL SEN/CIRCEC-466
P0500 0500
VEH SPEED SEN/CIRC*5EC-468
P0506 0506 ISC SYSTEMEC-470
P0507 0507 ISC SYSTEMEC-472
P0550 0550 PW ST P SEN/CIRCEC-474
P0603 0603 ECM BACK UP/CIRCUITEC-479
P0605 0605 ECMEC-483
P0643 0643 SENSOR POWER/CIRCEC-486
P0700 0700 TCMAT- 11 2
P0705 0705 PNP SW/CIRCAT- 11 3
P0710 0710 ATF TEMP SEN/CIRCAT-135
P0717 0717 TURBINE SENSORAT- 11 7
P0720 0720
VEH SPD SEN/CIR AT*5AT- 11 9
P0725 0725 ENGINE SPEED SIGAT-124
P0740 0740 TCC SOLENOID/CIRCAT-126
P0744 0744 A/T TCC S/V FNCTNAT-128
P0745 0745 L/PRESS SOL/CIRCAT-130
P0850 0850 P-N POS SW/CIRCUITEC-491
P1148 1148 CLOSED LOOP-B1EC-496
P1168 1168 CLOSED LOOP-B2EC-496
P1211 1211 TCS C/U FUNCTNEC-497
P1212 1212 TCS/CIRCEC-498
P1217 1217 ENG OVER TEMPEC-499
P1220 1220 FPCM/CIRCUITEC-510
P1225 1225 CTP LEARNINGEC-518
P1226 1226 CTP LEARNINGEC-520
P1421 1421 COLD START CONTROLEC-522
P1550 1550 BAT CURRENT SENSOREC-524
P1551 1551 BAT CURRENT SENSOREC-531
P1552 1552 BAT CURRENT SENSOREC-531
P1553 1553 BAT CURRENT SENSOREC-538
P1554 1554 BAT CURRENT SENSOREC-545
P1564 1564 ASCD SWEC-552 (Models with ICC)
EC-559
(Models with ASCD)
P1568 1568
ICC COMMAND VALUE*
6EC-566
P1572 1572 ASCD BRAKE SWEC-567 (Models with ICC)
EC-576
(Models with ASCD)
P1574 1574 ASCD VHL SPD SENEC-584
(Models with ICC)
EC-586
(Models with ASCD) DTC*
1
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*
2ECM*3

INDEX FOR DTC
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Revision: 2007 April2007 M35/M45CLOSED LOOP-B2 P1168 1168EC-496
CMP SEN/CIRC-B1 P0340 0340EC-371
CMP SEN/CIRC-B2 P0345 0345EC-371
COLD START CONTROL P1421 1421EC-522
CONTROL UNIT(CAN) U1010 1010EC-164
CTP LEARNING P1225 1225EC-518
CTP LEARNING P1226 1226EC-520
CYL 1 MISFIRE P0301 0301EC-349
CYL 2 MISFIRE P0302 0302EC-349
CYL 3 MISFIRE P0303 0303EC-349
CYL 4 MISFIRE P0304 0304EC-349
CYL 5 MISFIRE P0305 0305EC-349
CYL 6 MISFIRE P0306 0306EC-349
D/C SOLENOID/CIRC P1762 1762AT-155
D/C SOLENOID FNCTN P1764 1764AT-157
ECM P0605 0605EC-483
ECM BACK UP/CIRCUIT P0603 0603EC-479
ECT SEN/CIRC P0117 0117EC-214
ECT SEN/CIRC P0118 0118EC-214
ECT SENSOR P0125 0125EC-226
ENG OVER TEMP P1217 1217EC-499
ENGINE SPEED SIG P0725 0725AT-124
ETC ACTR P2119 2119EC-615
ETC FUNCTION/CIRC P2101 2101EC-604
ETC MOT P2118 2118EC-610
ETC MOT PWR P2100 2100EC-598
ETC MOT PWR P2103 2103EC-598
EVAP GROSS LEAK P0455 0455EC-445
EVAP PURG FLOW/MON P0441 0441EC-386
EVAP SMALL LEAK P0442 0442EC-391
EVAP SYS PRES SEN P0451 0451EC-428
EVAP SYS PRES SEN P0452 0452EC-431
EVAP SYS PRES SEN P0453 0453EC-437
EVAP VERY SML LEAK P0456 0456EC-453
FPCM/CIRCUIT P1220 1220EC-510
FR/B SOLENOID/CIRC P1757 1757AT-151
FR/B SOLENOID FNCT P1759 1759AT-153
FTT SEN/CIRCUIT P0182 0182EC-337
FTT SEN/CIRCUIT P0183 0183EC-337
FTT SENSOR P0181 0181EC-331
FUEL LEVEL SENSOR P0461 0461EC-464
FUEL LEVL SEN/CIRC P0462 0462EC-466
Items
(CONSULT-II screen terms)DTC*
1
Reference page
CONSULT-II
GST*
2ECM*3

EC-24
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PRECAUTIONS
Revision: 2007 April2007 M35/M45
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NBS004RW
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Procedures without Cowl Top CoverNBS004RX
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
On Board Diagnostic (OBD) System of Engine and A/TNBS004RY
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MIL to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-104, "
HAR-
NESS CONNECTOR" .

Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MIL to light up due to the short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to the malfunction of the EVAP system or fuel injection system,
etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PIIB3706J

PRECAUTIONS
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Revision: 2007 April2007 M35/M45
PrecautionNBS004RZ

Always use a 12 volt battery as power source.

Do not attempt to disconnect battery cables while engine is
running.

Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative
battery cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned OFF.

Before removing parts, turn ignition switch OFF and then
disconnect negative battery cable.

Do not disassemble ECM.

If a battery cable is disconnected, the memory will return to
the ECM value.
The ECM will now start to self-control at its initial value.
Engine operation can vary slightly when the terminal is dis-
connected. However, this is not an indication of a malfunc-
tion. Do not replace parts because of a slight variation.

If the battery is disconnected, the following emission-
related diagnostic information will be lost within 24 hours.
–Diagnostic trouble codes
–1st trip diagnostic trouble codes
–Freeze frame data
–1st trip freeze frame data
–System readiness test (SRT) codes
–Test values

When connecting ECM harness connector, fasten (B) it
securely with a lever (2) as far as it will go as shown in the
figure.
–ECM (1)
–Loosen (A)

When connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.

Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to ICs.

Keep engine control system harness at least 10 cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of ICs, etc.

Keep engine control system parts and harness dry.
SEF289H
PBIB1164E
PBIB2714E
PBIB0090E

PRECAUTIONS
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Revision: 2007 April2007 M35/M45

B1 indicates the bank 1, B2 indicates the bank 2 as shown
in the figure.

Do not operate fuel pump when there is no fuel in lines.
–Fuel level sensor unit and fuel pump (1)
–Fuel pressure regulator (2)
–Fuel tank temperature sensor (3)

Tighten fuel hose clamps to the specified torque.

Do not depress accelerator pedal when starting.

Immediately after starting, do not rev up engine unneces-
sarily.

Do not rev up engine just prior to shutdown.

When installing C.B. ham radio or a mobile phone, be sure
to observe the following as it may adversely affect elec-
tronic control systems depending on installation location.
–Keep the antenna as far as possible from the electronic
control units.
–Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
–Adjust the antenna and feeder line so that the standing-
wave radio can be kept smaller.
–Be sure to ground the radio to vehicle body.
SEC893C
PBIB2707E
SEF709Y
SEF708Y

PREPARATION
EC-29
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2007 April2007 M35/M45
Commercial Service ToolsNBS004S1
Tool name
(Kent-Moore No.)Description
Leak detector
i.e.: (J-41416)Locating the EVAP leak
EVAP service port
adapter
i.e.: (J-41413-OBD)Applying positive pressure through EVAP service
port
Fuel filler cap adapter
i.e.: (MLR-8382)Checking fuel tank vacuum relief valve opening
pressure
Socket wrench Removing and installing engine coolant
temperature sensor
Oxygen sensor thread
cleaner
i.e.: (J-43897-18)
(J-43897-12)Reconditioning the exhaust system threads
before installing a new oxygen sensor. Use with
anti-seize lubricant shown below.
a: 18 mm diameter with pitch 1.5 mm for
Zirconia Oxygen Sensor
b: 12 mm diameter with pitch 1.25 mm for
Titania Oxygen Sensor
Anti-seize lubricant
i.e.: (Permatex
TM
133AR or equivalent
meeting MIL
specification MIL-A-
907)Lubricating oxygen sensor thread cleaning tool
when reconditioning exhaust system threads.
S-NT703
S-NT704
S-NT815
S-NT705
AEM488
S-NT779