2007 INFINITI M35 MOTOR

TROUBLE DIAGNOSIS
BRC-31
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2007 April2007 M35/M45
TEST ITEMS
Solenoid Valve
NOTE:
The example shown is for front right wheel. The procedure for the other wheels is the same as given below.

When performing an active test of the ABS function, select the
"MAIN SIGNALS" for each test item. In addition, when perform-
ing an active test of the VDC/TCS function, select the item menu
for each test item.

For ABS solenoid valve, touch “UP”, “KEEP”, and “DOWN” on
the display screen. For ABS solenoid valve (ACT), touch “UP”,
“ACT UP”, “ACT KEEP” and confirm that solenoid valves (IN,
OUT, USV, HSV) operate as shown in the table below.
*: ON for 1 to 2 seconds after the touch, and then OFF
Note: A brief moment of ON/OFF condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it is
an operation for checking.
ABS Motor
Touch “ON” and “OFF” on screen. Make sure motor relay and actua-
tor relay operates as shown in table below.
Note: A brief moment of ON/OFF condition occurs every 20 seconds after ignition
switch turned ON. This is not malfunction because it is an operation for checking.
SFIA0678E
Operation
(Note)ABS solenoid valve ABS solenoid valve (ACT)
UP KEEP DOWN UP ACT UP ACT KEEP
FR RH IN SOL OFF ON ON OFF OFF OFF
FR RH OUT SOL OFF OFF ON* OFF OFF OFF
USV [FR-RL] OFF OFF OFF OFF ON ON
HSV [FR-RL] OFF OFF OFF OFF ON* OFF
Operation ON OFF
MOTOR RELAY ON OFF
ACTUATOR RLY (Note) ON ON
SFIA0593E

BRC-32
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
For Fast and Accurate DiagnosisNFS000QJ
PRECAUTIONS FOR DIAGNOSIS

Before performing diagnosis, always read General Information (GI) to confirm general precautions. Refer
to GI-4, "
General Precautions" .

If steering angle sensor, steering system parts, suspension system parts, ABS actuator and electric unit
(control unit) or tires have been replaced, or if wheel alignment has been adjusted, be sure to adjust neu-
tral position of steering angle sensor before driving. Refer to BRC-6, "
Adjustment of Steering Angle Sen-
sor Neutral Position" .

After diagnosis is finished, be sure to erase memory. Refer to BRC-24, "ERASE MEMORY" .

When checking continuity and voltage between unit, be sure to check for disconnection, looseness, bend,
or collapse of connector terminals. If any malfunction is found, repair or replace connector terminals.

For intermittent symptoms, possible cause is malfunction in harness, harness connector, or terminals.
Move harness, harness connector, and terminals to check for poor connections.

If a circuit tester is used for the check, be careful not to forcibly extend any connector terminal.

The following symptoms may be caused by normal operations.
Symptom Symptom description Result
Motor operation soundThis is sound of motor inside VDC actuator. Slight sound may occur
during VDC, TCS, and ABS operation.
Normal
Just after engine starts, the motor operating sound may be heard.
This is a normal condition of the system operation check.
System operation check soundWhen engine starts, slight “click” sound may be heard from engine
room. This is normal and is part of system operation check.Normal
VDC/TCS operation
(SLIP indicator lamp ON)TCS may activate momentarily if wheel speed changes when driving
over location where friction varies, when downshifting, or when fully
depressing accelerator pedal.Normal
Cancel the VDC/TCS
function for the inspec-
tion on a chassis dyna-
mometer. When checking speed meter etc. With a 2-wheel-drive chassis dyna-
mometer, vehicle speed is not increased by pressing down on the
accelerator.
ABS operation
(Longer stopping distance)On roads with low friction, such as snowy roads or gravel roads, vehi-
cles with ABS may require a longer stopping distance. Therefore,
when driving on such roads, avoid overconfidence and keep speed
sufficiently low.Normal
Insufficient feeling of accelerationDepending on road conditions, driver may feel that feeling of acceler-
ation is insufficient. This is because traction control, which controls
engine and brakes to achieve optimal traction, has the highest priority
(for safety). As a result, there may be times when acceleration is
slightly less than usual for the same accelerator pedal operation.Normal

BRC-38
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2007 April2007 M35/M45
ABS Motor and Motor Relay CircuitNFS000QP
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E30,
check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or
replace terminal.
2. Reconnect connector and perform self-diagnosis.
OK or NG
OK >> INSPECTION END
NG >> GO TO 3.
3. CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E30.
2. Check voltage between the ABS actuator and electric unit (con-
trol unit) harness connector E30 terminal 2 and ground.
OK or NG
OK >> GO TO 4.
NG >>

Repair or replace malfunctioning components.

Perform the self-diagnosis, and make sure that the
result shows “NO DTC IS DETECTED”.
4. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control
unit) harness connector E30 terminals 1, 4 and ground.
OK or NG
OK >>
Replace ABS actuator and electric unit (control unit).

Perform the self-diagnosis, and make sure that the
result shows “NO DTC IS DETECTED”.
NG >>

Repair or replace malfunctioning components.

Perform the self-diagnosis, and make sure that the
result shows “NO DTC IS DETECTED”.
Self-diagnosis results
PUMP MOTOR
ABS actuator and electric unit (control unit) Ground Voltage
2—Battery voltage
(Approx. 12 V)
SFIA3034E
ABS actuator and electric unit (control unit) Ground Continuity
1, 4 — Yes
SFIA3033E

CO-22
[VQ35DE]
COOLING FAN
Revision: 2007 April2007 M35/M45
COOLING FANPFP:21140
ComponentsNBS004QY
Removal and Installation NBS004QZ
REMOVAL
1. Remove engine room cover (RH and LH). Refer to EM-15, "ENGINE ROOM COVER" .
2. Remove air duct (inlet) and air cleaner case assembly. Refer to EM-19, "
AIR CLEANER AND AIR DUCT"
.
3. Drain engine coolant from radiator. Refer to CO-11, "
ENGINE COOLANT" .
4. Disconnect harness connector from cooling fan control module, and move harness to aside.
5. Remove radiator hose (upper). Refer to CO-14, "
RADIATOR" .
6. Remove cooling fan assembly.
CAUTION:
Be careful not to damage or scratch on radiator core.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Only use genuine parts for radiator shroud and cooling fan mounting bolt and observe the specified
torque (to prevent radiator from being damaged).
INSPECTION AFTER INSTALLATION
Make sure that fan motors operate normally.
1. Sub-harness 2. Cooling fan control module 3. Sub-harness
4. Fan motor (LH) 5. Fan motor (RH) 6. Fan shroud
7. Cooling fan (RH) 8. Cooling fan (LH)
A. Apply on fan motor shaft.
: Apply Genuine High Strength Lock-
ing Sealant or equivalent.
KBIA3567J

COOLING FAN
CO-23
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
CO
Revision: 2007 April2007 M35/M45
NOTE:
Cooling fans are controlled by cooling fan control module. For details, refer to EC-499, "
DTC P1217 ENGINE
OVER TEMPERATURE" .
Disassembly and Assembly NBS004R0
DISASSEMBLY
1. Disconnect sub-harness from fan motor (RH and LH) and cooling fan control module.
2. Remove cooling fan control module from fan shroud.
CAUTION:
Handle carefully to avoid dropping and shocks.
3. Remove cooling fan mounting nuts, and then remove the cooling fan (RH and LH).
4. Remove fan motor (RH and LH).
INSPECTION AFTER DISASSEMBLY
Cooling Fan
Inspect cooling fan for crack or unusual bend.

If anything is found, replace cooling fan.
ASSEMBLY
Note the following, and assemble in the reverse order of disassembly.
CAUTION:
RH and LH cooling fans are different. Be careful not to misassemble them.

Install each fan in the following position.

Secure the sub-harness tightly to the fan shroud to prevent the fan rotation area from being loose.Right side : 4 blades
Left side : 5 blades

COOLING FAN
CO-51
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
CO
Revision: 2007 April2007 M35/M45
COOLING FANPFP:21140
ComponentsNBS004RM
Removal and InstallationNBS004RN
REMOVAL
1. Remove engine room cover (RH and LH). Refer to EM-173, "ENGINE ROOM COVER" .
2. Remove air duct (inlet) and air cleaner case assembly. Refer to EM-177, "
AIR CLEANER AND AIR
DUCT" .
3. Drain engine coolant from radiator. Refer to CO-40, "
ENGINE COOLANT" .
4. Disconnect harness connector from cooling fan control module, and move harness to aside.
5. Remove radiator hose (upper). Refer to CO-43, "
RADIATOR" .
6. Remove cooling fan assembly.
CAUTION:
Be careful not to damage or scratch on radiator core.
INSTALLATION
Note the following, and Install in the reverse order of removal.
CAUTION:
Only use genuine parts for radiator shroud and cooling fan mounting bolt and observe the specified
torque (to prevent radiator from being damaged).
INSPECTION AFTER INSTALLATION
Make sure that fan motors operate normally.
1. Sub-harness 2. Cooling fan control module 3. Sub-harness
4. Fan motor (LH) 5. Fan motor (RH) 6. Fan shroud
7. Cooling fan (RH) 8. Cooling fan (LH)
A. Apply on fan motor shaft.
: Apply Genuine High Strength Lock-
ing Sealant or equivalent.
KBIA3567J

CO-52
[VK45DE]
COOLING FAN
Revision: 2007 April2007 M35/M45
NOTE:
Cooling fans are controlled by cooling fan control module. For details. Refer to EC-1214, "
DTC P1217
ENGINE OVER TEMPERATURE" .
Disassembly and Assembly NBS004RO
DISASSEMBLY
1. Disconnect sub-harness from fan motor (RH and LH) and cooling fan control module.
2. Remove cooling fan control module from fan shroud.
CAUTION:
Handle carefully to avoid dropping and shocks.
3. Remove cooling fan mounting nuts, and then remove the cooling fan (RH and LH).
4. Remove fan motor (RH and LH).
INSPECTION AFTER DISASSEMBLY
Cooling Fan
Inspect cooling fan for crack or unusual bend.

If anything is found, replace cooling fan.
ASSEMBLY
Note the following, and assemble in the reverse order of disassembly.
CAUTION:
RH and LH cooling fans are different. Be careful not to misassemble them.

Install each fan in the following position.

Secure the sub-harness tightly to the fan shroud to prevent the fan rotation area from being loose.Right side : 4 blades
Left side : 5 blades

EC-7
C
D
E
F
G
H
I
J
K
L
M
ECA
Revision: 2007 April2007 M35/M45 DTC P2100, P2103 THROTTLE CONTROL MOTOR
RELAY .................................................................... 598
Component Description ........................................ 598
CONSULT-II Reference Value in Data Monitor Mode
. 598
On Board Diagnosis Logic ................................... 598
DTC Confirmation Procedure ............................... 598
Wiring Diagram .................................................... 600
Diagnostic Procedure ........................................... 601
DTC P2101 ELECTRIC THROTTLE CONTROL
FUNCTION .............................................................. 604
Description ........................................................... 604
On Board Diagnosis Logic ................................... 604
DTC Confirmation Procedure ............................... 604
Wiring Diagram .................................................... 605
Diagnostic Procedure ........................................... 606
Component Inspection ......................................... 609
Removal and Installation ...................................... 609
DTC P2118 THROTTLE CONTROL MOTOR ........ 610
Component Description ........................................ 610
On Board Diagnosis Logic ................................... 610
DTC Confirmation Procedure ............................... 610
Wiring Diagram ..................................................... 611
Diagnostic Procedure ........................................... 612
Component Inspection ......................................... 613
Removal and Installation ...................................... 614
DTC P2119 ELECTRIC THROTTLE CONTROL
ACTUATOR ............................................................ 615
Component Description ........................................ 615
On Board Diagnosis Logic ................................... 615
DTC Confirmation Procedure ............................... 615
Diagnostic Procedure ........................................... 616
DTC P2122, P2123 APP SENSOR ........................ 617
Component Description ........................................ 617
CONSULT-II Reference Value in Data Monitor Mode
. 617
On Board Diagnosis Logic ................................... 617
DTC Confirmation Procedure ............................... 618
Wiring Diagram .................................................... 619
Diagnostic Procedure ........................................... 620
Component Inspection ......................................... 622
Removal and Installation ...................................... 623
DTC P2127, P2128 APP SENSOR ........................ 624
Component Description ........................................ 624
CONSULT-II Reference Value in Data Monitor Mode
. 624
On Board Diagnosis Logic ................................... 624
DTC Confirmation Procedure ............................... 625
Wiring Diagram .................................................... 626
Diagnostic Procedure ........................................... 627
Component Inspection ......................................... 630
Removal and Installation ...................................... 630
DTC P2135 TP SENSOR ........................................ 631
Component Description ........................................ 631
CONSULT-II Reference Value in Data Monitor Mode
. 631
On Board Diagnosis Logic ................................... 631
DTC Confirmation Procedure ............................... 632
Wiring Diagram .................................................... 633Diagnostic Procedure ...........................................634
Component Inspection ..........................................637
Removal and Installation ......................................637
DTC P2138 APP SENSOR .....................................638
Component Description ........................................638
CONSULT-II Reference Value in Data Monitor Mode
.638
On Board Diagnosis Logic ....................................638
DTC Confirmation Procedure ...............................639
Wiring Diagram .....................................................640
Diagnostic Procedure ...........................................641
Component Inspection ..........................................645
Removal and Installation ......................................645
DTC P2A00, P2A03 A/F SENSOR 1 ......................646
Component Description ........................................646
CONSULT-II Reference Value in Data Monitor Mode
.646
On Board Diagnosis Logic ....................................646
DTC Confirmation Procedure ...............................646
Wiring Diagram .....................................................648
Diagnostic Procedure ...........................................651
Removal and Installation ......................................656
ASCD BRAKE SWITCH .........................................657
Component Description ........................................657
CONSULT-II Reference Value in Data Monitor Mode
.657
Wiring Diagram .....................................................658
Diagnostic Procedure ...........................................659
Component Inspection ..........................................663
ASCD INDICATOR ..................................................664
Component Description ........................................664
CONSULT-II Reference Value in Data Monitor Mode
.664
Wiring Diagram .....................................................665
Diagnostic Procedure ...........................................666
ELECTRICAL LOAD SIGNAL ................................667
Description ............................................................667
CONSULT-II Reference Value in Data Monitor Mode
.667
Diagnostic Procedure ...........................................667
FUEL INJECTOR ....................................................669
Component Description ........................................669
CONSULT-II Reference Value in Data Monitor Mode
.669
Wiring Diagram .....................................................670
Diagnostic Procedure ...........................................671
Component Inspection ..........................................674
Removal and Installation ......................................674
FUEL PUMP ............................................................675
Description ............................................................675
CONSULT-II Reference Value in Data Monitor Mode
.675
Wiring Diagram .....................................................676
Diagnostic Procedure ...........................................677
Component Inspection ..........................................681
Removal and Installation ......................................682
ICC BRAKE SWITCH .............................................683
Component Description ........................................683
CONSULT-II Reference Value in Data Monitor Mode