2007 INFINITI M35 steering

DTC P1568 ICC FUNCTION
EC-1279
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2007 April2007 M35/M45
DTC P1568 ICC FUNCTIONPFP:18995
On Board Diagnosis LogicNBS005ML
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.
NOTE:

If DTC P1568 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-865, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .

If DTC P1568 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-868, "
DTC U1010 CAN COMMUNICATION" .

If DTC P1568 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-1190, "
DTC P0605 ECM"
DTC Confirmation ProcedureNBS005MM
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Step 4 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Press MAIN switch on ICC steering switch.
4. Drive the vehicle at more than 40 km/h (25 MPH).
5. Press SET/COAST switch.
6. If DTC is detected, go to EC-1279, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic ProcedureNBS005MN
1. REPLACE ICC SENSOR INTEGRATED UNIT
1. Replace ICC sensor integrated unit.
2. Perform ACS-12, "
ACTION TEST" .
3. Check DTC of ICC sensor integrated unit. Refer to ACS-40, "
TROUBLE DIAGNOSIS FOR SELF-DIAG-
NOSTIC ITEMS" .
>>INSPECTION END
DTC No. Trouble Diagnosis Name DTC Detecting Condition Possible Cause
P1568
1568ICC functionECM detects a difference between signals
from ICC unit is out of specified range.

Harness or connectors
(The CAN communication line is open or
shorted.)

ICC sensor integrated unit

ECM
SEF058Y

EC-1384
[VK45DE]
ASCD INDICATOR
Revision: 2007 April2007 M35/M45
ASCD INDICATORPFP:24814
Component DescriptionNBS005QO
ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE and
SET, and is integrated in combination meter.
CRUISE lamp illuminates when MAIN switch on ASCD steering switch is turned ON to indicated that ASCD
system is ready for operation.
SET lamp illuminates when following conditions are met.

CRUISE lamp is illuminated.

SET/COAST switch on ASCD steering switch is turned ON while vehicle speed is within the range of
ASCD setting.
SET lamp remains lit during ASCD control.
Refer to EC-738, "
AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for the ASCD function.
CONSULT-II Reference Value in Data Monitor ModeNBS005QP
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
CRUISE LAMP

Ignition switch: ONMAIN switch: Pressed at the 1st time →
at the 2nd timeON → OFF
SET LAMP

MAIN switch: ON

Vehicle speed: Between 40 km/h
(25 MPH) and 144 km/h (89
MPH)ASCD: Operating ON
ASCD: Not operating OFF

EC-1440
[VK45DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2007 April2007 M35/M45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Fuel PressureNBS005QT
Idle Speed and Ignition TimingNBS005QU
*: Under the following conditions:

Air conditioner switch: OFF

Electric load: OFF (Lights, heater fan & rear window defogger)

Steering wheel: Kept in straight-ahead position
Calculated Load ValueNBS005QV
Mass Air Flow SensorNBS005QW
*: Engine is warmed up to normal operating temperature and running under no load.
Intake Air Temperature SensorNBS005QX
Engine Coolant Temperature SensorNBS005QY
Fuel Tank Temperature SensorNBS005QZ
Crankshaft Position Sensor (POS)NBS005R0
Refer to EC-1081, "Component Inspection" .
Camshaft Position Sensor (PHASE)NBS005R1
Refer to EC-1088, "Component Inspection" .
A/F Sensor 1 HeaterNBS005R2
Fuel pressure at idling kPa (kg/cm2 , psi)Approximately 350 (3.57, 51)
Target idle speed No load* (in P or N position) 650 ± 50 rpm
Air conditioner: ON In P or N position 650 rpm or more
Ignition timing In P or N position 12° ± 5° BTDC
Condition Calculated load value% (Using CONSULT-II or GST)
At idle14 - 33
At 2,500 rpm12 - 25
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle0.9 - 1.2V*
Mass air flow (Using CONSULT-II or GST)2.0 - 6.0 g·m/sec at idle*
7.0 - 20.0 g·m/sec at 2,500 rpm*
Temperature °C (°F) Resistance kΩ
25 (77)1.800 - 2.200
Temperature °C (°F) Resistance kΩ
20 (68)2.1 - 2.9
50 (122)0.68 - 1.00
90 (194)0.236 - 0.260
Temperature °C (°F) Resistance kΩ
20 (68)2.3 - 2.7
50 (122)0.79 - 0.90
Resistance [at 25°C (77°F)] 2.3 - 4.3Ω

FAX-4
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: 2007 April2007 M35/M45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNDS000FE
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
—
FAX-14—
FAX-5—
FAX-5
NVH in FAX and FSU sections
Refer to Front axle in this chart.
NVH in WT section
NVH in WT section
Refer to DRIVE SHAFT in this chart.
NVH in BR section
NVH in PS section
Possible cause and SUSPECTED PARTS
Excessive joint angle
Joint sliding resistance
Imbalance
Improper installation, looseness
Parts interference
Wheel bearing damage
FRONT AXLE AND FRONT SUSPENSION
FRONT AXLE
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
SymptomDRIVE
SHAFTNoise×× ××××× ××
Shake× × ××××× ××
FRONT
AXLENoise×××× ×××××
Shake×××× ×××××
Vibration×××× × × ×
Shimmy×××××××
Judder× × ×× ××
Poor quality ride or handling×××××

FRONT WHEEL HUB AND KNUCKLE
FAX-5
C
E
F
G
H
I
J
K
L
MA
B
FA X
Revision: 2007 April2007 M35/M45
FRONT WHEEL HUB AND KNUCKLEPFP:40202
On-Vehicle Inspection NDS000FF
Make sure that the mounting conditions (looseness, backlash) of each component and component conditions
(wear, damage) are normal.
WHEEL BEARING INSPECTION

Move wheel hub and bearing assembly in the axial direction by hand. Make sure there is no looseness of
wheel bearing.

Rotate wheel hub and make sure that is no unusual noise or other irregular conditions. If there is any of
irregular conditions, replace wheel hub and bearing assembly
Removal and InstallationNDS000FG
COMPONENT
REMOVAL
Wheel Hub and Bearing Assembly
1. Remove tires from vehicle with power tool.
2. Remove wheel sensor from steering knuckle. Refer to BRC-54, "
WHEEL SENSOR" .
CAUTION:
Do not pull on wheel sensor harness.
3. Remove brake hose bracket. Refer to BR-11, "
BRAKE TUBE AND HOSE" .
4. Remove torque member fixing bolts with power tool. Hang torque member in a place where it will not inter-
fere with work. Refer to BR-22, "
FRONT DISC BRAKE" .
CAUTION:
Do not depress brake pedal while brake caliper is removed.Axial end play : 0.05 mm (0.002 in) or less
1. Steering knuckle 2. Cotter pin 3. Splash guard
4. Wheel hub and bearing assembly 5. Washer
A: AWD models
Refer to GI-11, "
Components" , for the symbols in the figure.
SDIA3256E

FAX-6
FRONT WHEEL HUB AND KNUCKLE
Revision: 2007 April2007 M35/M45
5. Put matching mark on disc rotor and wheel hub and bearing
assembly, then remove disc rotor.
6. Remove cotter pin, then loosen hub lock nut with power tool.
(AWD)
7. Separate wheel hub and bearing assembly from drive shaft by
lightly tapping the end with a hammer (suitable tool) and a wood
block, and then remove hub lock nut. (AWD)
CAUTION:

Do not place drive shaft joint at an extreme angle. Also be
careful not to overextend slide joint.

Do not allow drive shaft to hang down without support for
housing (or joint sub-assembly), shaft and the other
parts.
NOTE:
Use a puller (suitable tool) if wheel hub and bearing assembly
and drive shaft cannot be separated even after performing the
above procedure.
8. Remove wheel hub and bearing assembly mounting bolts, and then remove splash guard and wheel hub
and bearing assembly from steering knuckle.
Steering knuckle
1. Refer to the procedure from 1 to 7 in “Wheel Hub and Bearing Assembly” FA X - 5 , "REMOVAL" .
2. Remove cotter pin (1), and then loosen the nut.
3. Remove steering outer socket (2) from steering knuckle (3) so
as not to damage ball joint boot (4) using the ball joint remover
(suitable tool).
CAUTION:
Temporarily tighten the nut to prevent damage to threads
and to prevent the ball joint remover (suitable tool) from
suddenly coming off.
4. Remove cotter pin of transverse link and steering knuckle, and
then loosen nut.
5. Remove transverse link from steering knuckle so as not to dam-
age ball joint boot using the ball joint remover (suitable tool).
CAUTION:
Temporarily tighten the nut to prevent damage to threads and to prevent ball joint remover (suit-
able tool) from suddenly coming off.
6. Remove fixing nut and bolt with power tool, and then remove steering knuckle from upper link. Refer to
FSU-8, "
Components" .
7. Remove wheel hub and bearing assembly mounting bolts, and then remove splash guard and wheel hub
and bearing assembly from steering knuckle.
INSPECTION AFTER REMOVAL
Check components for deformation, cracks, and other damage. Replace if there are.
Ball Joint Inspection
Check boots of transverse link and steering outer socket ball joint for breakage, axial play, and torque. Refer to
FSU-14, "
INSPECTION AFTER REMOVAL" , “TRANSVERSE LINK”, PS-23, "INSPECTION AFTER DISAS-
SEMBLY" , “POWER STEERING GEAR”.
SDIA2608E
SDIA1821E
SGIA1183E

FRONT WHEEL HUB AND KNUCKLE
FAX-7
C
E
F
G
H
I
J
K
L
MA
B
FA X
Revision: 2007 April2007 M35/M45
INSTALLATION

Installation is the reverse order of the removal. For tightening torque, refer to FAX-5, "COMPONENT" .

Perform the final tightening of each of parts under unladen conditions, which were removed when remov-
ing wheel hub and bearing assembly and steering knuckle. Check the wheel alignment. Refer to FSU-6,
"Wheel Alignment Inspection" (2WD), FSU-24, "Wheel Alignment Inspection" (AWD).

Adjust neutral position of steering angle sensor after checking the wheel alignment. Refer to BRC-6,
"Adjustment of Steering Angle Sensor Neutral Position" .

Check wheel sensor harness for proper connection. Refer to BRC-54, "WHEEL SENSOR" .

Assemble disc rotor and wheel hub and bearing assembly by
aligning each matching mark as shown in the figure when install-
ing disc rotor.
NOTE:
Refer to BR-27, "
DISC ROTOR INSPECTION" , for assembly
when removing disc rotor without matching mark.
SDIA2608E

FAX-8
FRONT DRIVE SHAFT
Revision: 2007 April2007 M35/M45
FRONT DRIVE SHAFTPFP:39100
On-Vehicle Inspection NDS000G0

Check drive shaft mounting point and joint for looseness and other damage.

Check boot for cracks and other damage.
CAUTION:
Replace entire drive shaft assembly when noise or vibration occur from drive shaft.
DRIVE SHAFT BOOT REPLACEMENT
1. Remove tires from vehicle with power tool.
2. Remove wheel sensor from steering knuckle. Refer to BRC-54, "
WHEEL SENSOR" .
CAUTION:
Do not pull on wheel sensor harness.
3. Remove brake hose bracket. Refer to BR-11, "
BRAKE TUBE AND HOSE" .
4. Remove torque member fixing bolts with power tool. Hang torque member in a place where it will not inter-
fere with work. Refer to BR-22, "
FRONT DISC BRAKE" .
NOTE:
Do not depress brake pedal while brake caliper is removed.
5. Remove disc rotor. Refer to FA X - 5 , "
Removal and Installation" .
6. Remove cotter pin, then loosen hub lock nut with power tool.
7. Separate wheel hub and bearing assembly from drive shaft by
lightly tapping the end with a hammer (suitable tool) and a wood
block, and then remove hub lock nut.
CAUTION:

Do not place drive shaft joint at an extreme angle. Also be
careful not to overextend slide joint.

Do not allow drive shaft to hang down without support for
housing (or joint sub-assembly), shaft and the other
parts.
NOTE:
Use a puller (suitable tool) if wheel hub and drive shaft cannot
be separated even after performing the above procedure.
8. Remove cotter pin (1), and then loosen the nut.
9. Remove steering outer socket (2) from steering knuckle (3) so
as not to damage ball joint boot (4) using the ball joint remover
(suitable tool).
CAUTION:
Temporarily tighten the nut to prevent damage to threads
and to prevent the ball joint remover (suitable tool) from
suddenly coming off.
10. Remove cotter pin of transverse link and steering knuckle, and
then loosen nut.
11. Remove transverse link from steering knuckle so as not to dam-
age ball joint boot using the ball joint remover (suitable tool).
CAUTION:
Temporarily tighten the nut to prevent damage to threads and to prevent ball joint remover (suit-
able tool) from suddenly coming off.
12. Remove drive shaft from wheel hub and bearing assembly.
13. Remove boot bands, and then remove boot from joint sub-assembly.
SDIA1821E
SGIA1183E