2007 INFINITI M35 check engine

SC-30
CHARGING SYSTEM
Revision: 2007 April2007 M35/M45
2. CHECK OPERATION OF POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
1. Connect CONSULT-II and start the engine.
2. The selector lever is in “P” or “N” position and all of the electric
loads and A/C, etc. are turned OFF.
3. Select “ALTERNATOR DUTY” at “ACTIVE TEST” of “ENGINE”,
and then check the value of “BATTERY VOLT” monitor when
DUTY value of “ALTERNATOR DUTY” is set to 40.0 %.
4. Check the value of “BATTERY VOLT” monitor when DUTY value
of “ALTERNATOR DUTY” is set to 80.0%.
OK or NG
OK >> INSPECTION END
NG >> GO TO 3. (The charging condition of the battery should
be normal.)
3. CHECK IPDM E/R (CONSULT-II)
Perform IPDM E/R self-diagnosis with CONSULT-II. Refer to PG-20, "
CONSULT-II Function (IPDM E/R)" .
Self
-diagnostic results content
No malfunction detected>> GO TO 4.
Malfunction detected>> Check applicable parts, and repair or replace corresponding parts.
4. CHECK HARNESS BETWEEN ALTERNATOR AND IPDM E/R
1. Turn ignition switch OFF.
2. Disconnect alternator connector and IPDM E/R connector.
3. Check continuity between alternator harness connector (A) and
IPDM E/R harness connector (B).
4. Check continuity between alternator harness connector (A) and
ground.
OK or NG
OK >> Replace IPDM E/R.
NG >> Repair harness or connector between IPDM E/R and alternator. “BATTERY VOLT”
2 seconds after setting the
DUTY value of “ALTERNA-
TOR DUTY” to 40.0 %: 12 - 13.6 V
PKIB4503E
“BATTERY VOLT”
20 seconds after setting
the DUTY value of “ALTER-
NATOR DUTY” to 80.0 %: +0.5 V or more against
the value of “BATTERY
VOLT” monitor when
DUTY value is 40.0 %
PKIB4504E
AB
Continuity
Connector Terminal Connector Terminal
F20 (VQ35DE)
E209 (VK45DE)5 E8 33 Yes
A
GroundCondition
Connector Terminal
F20 (VQ35DE)
E209 (VK45DE)5No
PKIB8811E

SC-32
CHARGING SYSTEM
Revision: 2007 April2007 M35/M45
Removal (AWD Models)
1. Disconnect the battery cable from the negative terminal.
2. Remove power steering oil reservoir tank from the bracket.
3. Remove the clips (A) and the hose clamp (B) from the harness
bracket (1).
4. Remove engine front undercover, using power tools.
5. Remove alternator and power steering oil pump belt. Refer to
EM-16, "
DRIVE BELTS" .
6. Remove alternator mounting bolt (A) and alternator stay mount-
ing bolt (B) using power tools, then remove alternator stay (1).
7. Remove alternator mounting bolt (C), using power tools.
8. Pull and turn alternator, and then remove the harness bracket
bolts (A).
9. Disconnect alternator connector (1).
10. Remove “B” terminal nut (2).
11. Remove alternator assembly downward from the vehicle.
Alternator Pulley Inspection
Perform the following.

Make sure that alternator pulley does not rattle.

Make sure that alternator pulley nut is tight.
Installation
Installation is the reverse order of removal.
CAUTION:
Be sure to tighten “B” terminal nut carefully.

Install alternator, and check tension of belt. Refer to EM-16, "Checking Drive Belts" .

For this model, the power generation voltage variable control system that controls the power generation
voltage of the alternator has been adopted. Therefore, the power generation voltage variable control sys-
tem operation inspection should be performed after replacing the alternator, and then make sure that the
system operates normally. Refer to SC-29, "
Power Generation Voltage Variable Control System Operation
Inspection" .
PKIB8818E
PKIB8819E
SKIB2608J
Alternator pulley nut:
: 118 N·m (12.0 kg-m, 87 ft-lb)

SE-6
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: 2007 April2007 M35/M45
DUPLICATE THE NOISE AND TEST DRIVE
If possible, drive the vehicle with the customer until the noise is duplicated. Note any additional information on
the Diagnostic Worksheet regarding the conditions or location of the noise. This information can be used to
duplicate the same conditions when you confirm the repair.
If the noise can be duplicated easily during the test drive, to help identify the source of the noise, try to dupli-
cate the noise with the vehicle stopped by doing one or all of the following:
1) Close a door.
2) Tap or push/pull around the area where the noise appears to be coming from.
3) Rev the engine.
4) Use a floor jack to recreate vehicle “twist”.
5) At idle, apply engine load (electrical load, half-clutch on M/T models, drive position on A/T models).
6) Raise the vehicle on a hoist and hit a tire with a rubber hammer.

Drive the vehicle and attempt to duplicate the conditions the customer states exist when the noise occurs.

If it is difficult to duplicate the noise, drive the vehicle slowly on an undulating or rough road to stress the
vehicle body.
CHECK RELATED SERVICE BULLETINS
After verifying the customer concern or symptom, check ASIST for Technical Service Bulletins (TSBs) related
to that concern or symptom.
If a TSB relates to the symptom, follow the procedure to repair the noise.
LOCATE THE NOISE AND IDENTIFY THE ROOT CAUSE
1. Narrow down the noise to a general area. To help pinpoint the source of the noise, use a listening tool
(Chassis Ear: J-39570, Engine Ear and mechanics stethoscope).
2. Narrow down the noise to a more specific area and identify the cause of the noise by:

removing the components in the area that you suspect the noise is coming from.
Do not use too much force when removing clips and fasteners, otherwise clips and fastener can be broken
or lost during the repair, resulting in the creation of new noise.

tapping or pushing/pulling the component that you suspect is causing the noise.
Do not tap or push/pull the component with excessive force, otherwise the noise will be eliminated only
temporarily.

feeling for a vibration with your hand by touching the component(s) that you suspect is (are) causing the
noise.

placing a piece of paper between components that you suspect are causing the noise.

looking for loose components and contact marks.
Refer to SE-7, "
Generic Squeak and Rattle Troubleshooting" .
REPAIR THE CAUSE

If the cause is a loose component, tighten the component securely.

If the cause is insufficient clearance between components:
–separate components by repositioning or loosening and retightening the component, if possible.
–insulate components with a suitable insulator such as urethane pads, foam blocks, felt cloth tape or ure-
thane tape. A Nissan Squeak and Rattle Kit (J-43980) is available through your authorized Nissan Parts
Department.
CAUTION:
Do not use excessive force as many components are constructed of plastic and may be damaged.
NOTE:
Always check with the Parts Department for the latest parts information.
The following materials are contained in the Nissan Squeak and Rattle Kit (J-43980). Each item can be
ordered separately as needed.
URETHANE PADS [1.5 mm (0.059 in) thick]
Insulates connectors, harness, etc.
76268-9E005: 100×135 mm (3.94×5.31 in)/76884-71L01: 60×85 mm (2.36×3.35 in)/76884-
71L02: 15×25 mm (0.59×0.98 in)
INSULATOR (Foam blocks)
Insulates components from contact. Can be used to fill space behind a panel.
73982-9E000: 45 mm (1.77 in) thick, 50×50 mm (1.97×1.97 in)/73982-
50Y00: 10 mm (0.39 in) thick, 50×50 mm (1.97×1.97 in)

STC-2Revision: 2007 April2007 M35/M45 Inspection 3: RAS Motor Output Malfunction ......... 37
Inspection 4: Vehicle Speed Signal ........................ 38
Inspection 5: Steering Angle Signal Malfunction .... 39
Inspection 6: Rear Main Signal and Rear Sub Signal
Malfunction ............................................................. 40
Inspection 7: VDC Malfunction ............................... 43
Inspection 8: Engine Speed Signal Malfunction ..... 44
Inspection 9: CAN Communication System Mal-
function ................................................................... 44Inspection 10: Stop Lamp Switch Harness ............. 45
Inspection 11: RAS Warning Lamp Harness ........... 46
Diagnosis Chart by Symptom 1 .............................. 47
Diagnosis Chart by Symptom 2 .............................. 47
Check RAS Static/Dynamic Characteristics ............ 49
Component Inspection ............................................ 50
RAS MOTOR RELAY ........................................... 50
RAS MOTOR ....................................................... 50
REAR WHEEL STEERING ANGLE SENSOR .... 50

STC-8
[EPS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Control Unit Input/Output Signal StandardNGS000E0
STANDARD BY CIRCUIT TESTER AND OSCILLOSCOPE
CAUTION:
When checked using a circuit tester for voltage measurement, connector terminals should not be
forcefully extended.
Te r m i n a l
Measuring
pointMeasuring condition Standard
+ (wire color) –
1 (GR)
GroundIGN Ignition switch ON. Battery voltage (Approx. 12 V)
2 (B) Ground — —
3 (L)Vehicle speed
signal
(2-pulse)At 40 km/h (25MPH)
5 (Y)Engine
speed signalAt idle after warming up
At approx. 2,000 rpm
7 (G)Power steer-
ing solenoid
valveNormal
(Vehicle speed)0 km/h (0 MPH) Approx. 4.4 - 6.6 V
100 km/h (62 MPH) Approx. 2.4 - 3.6 V
In fail-safe mode
(Engine speed)0 - 1,500 rpm Approx. 4.4 - 6.6 V
1,500 - 3,000 rpm Approx. 3.5 V
More than 3,000 rpm Approx. 2.1 V
ELF1080D
PBIA3654J
PBIA3655J

TROUBLE DIAGNOSIS
STC-9
[EPS]
C
D
E
F
H
I
J
K
L
MA
B
STC
Revision: 2007 April2007 M35/M45
For Fast and Accurate Trouble DiagnosisNGS000E1
Check the following items with the vehicle stopped

Is air pressure and size of tires proper?

Is the specified part used for the steering wheel?

Is control unit a genuine part?

Are there any fluid leakage from steering gear assembly, power steering oil pump, and hydraulic pipes,
etc? Refer to PS-8, "
Checking Fluid Leakage" .

Is the fluid level proper? Refer to PS-8, "Checking Fluid Level" .

Is the wheel alignment adjusted properly? Refer to FSU-6, "Wheel Alignment Inspection" (2WD), FSU-24,
"Wheel Alignment Inspection" (AWD).

Are there any damage or modification to suspension or body resulting in increased weight or altered
ground clearance?

Check each link installation condition of suspension and axle.

Check each connector connection condition.
Check the following items while driving the vehicle

Check conditions when the malfunction occurred (5W 1H).

Is the engine condition normal?
Basic InspectionNGS000E2
POWER SUPPLY CIRCUIT TERMINAL LOOSENESS AND BATTERY
Check battery terminals for looseness on both positive and negative ones and ground connection. Also make
sure that battery voltage does not drop.
Inspection: Power Steering Control Unit Power Supply Circuit and GroundNGS000E3
1. CHECK POWER STEERING CONTROL UNIT CONNECTOR
Turn ignition switch OFF, disconnect power steering control unit harness connector, and check terminal for
deformation, disconnection, looseness, etc.
OK or NG
OK >> GO TO 2.
NG >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
2. CHECK POWER STEERING CONTROL UNIT GROUND CIRCUIT
Disconnect power steering control unit harness connector M8, and
then check continuity between power steering control unit harness
connector M8 and ground.
OK or NG
OK >> GO TO 3.
NG >> Ground circuit open or shorted. Repair or replace any
inoperative parts. Terminal 2 – Ground : Continuity exist.
SGIA1231E

STC-10
[EPS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
3. CHECK POWER STEERING CONTROL UNIT POWER SUPPLY CIRCUIT
Turn ignition switch ON, and then check voltage between power
steering control unit harness connector M8 and ground.
OK or NG
OK >> Power supply and ground circuit are normal.
NG >> Power supply circuit open or shorted. Repair or replace
any inoperative parts.
Symptom: The Steering Force Does Not Change Smoothly According to the
Vehicle Speed
NGS000E4
Heavy steering force with the static steering/light steering force during high-speed driving
1. POWER STEERING SOLENOID VALVE SIGNAL INSPECTION 1
1. Start engine.
2. Change the vehicle speed from 0 to 100 km/h (0 to 62 MPH)
slowly, and then check voltage between power steering control
unit harness connector M8 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 7.
2. POWER STEERING SOLENOID VALVE SIGNAL INSPECTION 2
1. Activate fail-safe function by running the engine speed at 1,500 rpm or higher for 10 seconds with the
vehicle stopped.
2. Change the engine speed to the idling, to approximately 1,600
rpm, and to approximately 3,000 rpm slowly, and then check
voltage between power steering control unit harness connector
M8 and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 8.
3. CHECK POWER STEERING SOLENOID VALVE CONNECTOR
Turn ignition switch OFF, disconnect power steering solenoid valve harness connector, and check terminal for
deformation, disconnection, looseness, etc.
OK or NG
OK >> GO TO 4.
NG >> Harness or connector open or shorted. Repair or replace any inoperative parts.Terminal 1 – ground : Battery voltage (Approx. 12 V)
SGIA1232E
Terminal 7 – ground : The voltage has changed from
approximately 4.4 - 6.6 V to
approximately 2.4 - 3.6 V
SGIA1233E
Terminal 7 – ground : The voltage has changed from
approximately 5.5 V to approxi-
mately 2.1 V step-by-step.
SGIA1233E

STC-12
[EPS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
7. CHECK VEHICLE SPEED SIGNAL CIRCUIT
Change the vehicle speed, and then check voltage waveform
between power steering control unit harness connector M8 and
ground.
OK or NG
OK >> Power steering control unit is inoperative. Replace it.
NG >> Check the following systems and replace if necessary.

Harness between unified meter & A/C amp and power steering control unit.

Unified meter & A/C amp and vehicle speed signal circuit Refer to DI-28, "UNIFIED METER
AND A/C AMP" .
8. CHECK ENGINE SPEED SIGNAL CIRCUIT
Warm up the engine, and then check voltage waveform between
power steering control unit harness connector M8 and ground when
the engine speed is the idling and at approximately 2,000 rpm.
OK or NG
OK >> Power steering control unit is inoperating. Replace it.
NG >> Check the following systems and replace if malfunction is detected.

Harness between ECM and power steering control unit

ECM engine speed signal circuit. Refer to EC-826, "CONSULT-II Function (ENGINE)" .
Terminal 3 – GroundRepeat Approx. 0 V and approx. 5 V
SGIA1237EELF1080D
Terminal 5 – GroundAt Idle
Approx. 2,000 rpmSGIA1289EPBIA3654J
PBIA3655J