steering INFINITI M35 2006 Factory Service Manual

STEERING ANGLE SENSOR
BRC-63
[VDC/TCS/ABS]
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Revision: 2006 January2006 M35/M45
STEERING ANGLE SENSORPFP:25554
Removal and InstallationNFS000RE
REMOVAL
1. Remove spiral cable assembly. Refer to SRS-40, "SPIRAL CABLE" .
2. Remove steering angle sensor from spiral cable assembly.
INSTALLATION
Installation is the reverse order of removal.
CAUTION:
After work, make sure to adjust neutral position of steering angle sensor. Refer to BRC-6, "
Adjustment
of Steering Angle Sensor Neutral Position" .
SFIA1404E

BRC-64
[VDC/TCS/ABS]
STEERING ANGLE SENSOR
Revision: 2006 January2006 M35/M45

EC-6Revision: 2006 January2006 M35/M45 On Board Diagnosis Logic ....................................533
DTC Confirmation Procedure ...............................533
Diagnostic Procedure ...........................................534
Removal and Installation ......................................534
DTC P1226 TP SENSOR ........................................535
Component Description ........................................535
On Board Diagnosis Logic ....................................535
DTC Confirmation Procedure ...............................535
Diagnostic Procedure ...........................................536
Removal and Installation ......................................536
DTC P1550 BATTERY CURRENT SENSOR ..........537
Component Description ........................................537
CONSULT-II Reference Value in Data Monitor Mode
.537
On Board Diagnosis Logic ....................................537
DTC Confirmation Procedure ...............................538
Wiring Diagram .....................................................539
Diagnostic Procedure ...........................................540
Component Inspection ..........................................542
D T C P 1 5 5 1 , P 1 5 5 2 B A T T E R Y C U R R E N T S E N S O R .543
Component Description ........................................543
CONSULT-II Reference Value in Data Monitor Mode
.543
On Board Diagnosis Logic ....................................543
DTC Confirmation Procedure ...............................544
Wiring Diagram .....................................................545
Diagnostic Procedure ...........................................546
Component Inspection ..........................................548
DTC P1553 BATTERY CURRENT SENSOR ..........549
Component Description ........................................549
CONSULT-II Reference Value in Data Monitor Mode
.549
On Board Diagnosis Logic ....................................549
DTC Confirmation Procedure ...............................550
Wiring Diagram .....................................................551
Diagnostic Procedure ...........................................552
Component Inspection ..........................................554
DTC P1554 BATTERY CURRENT SENSOR ..........555
Component Description ........................................555
CONSULT-II Reference Value in Data Monitor Mode
.555
On Board Diagnosis Logic ....................................555
Overall Function Check ........................................556
Wiring Diagram .....................................................557
Diagnostic Procedure ...........................................558
Component Inspection ..........................................560
DTC P1564 ICC STEERING SWITCH ....................561
Component Description ........................................561
CONSULT-II Reference Value in Data Monitor Mode
.561
On Board Diagnosis Logic ....................................561
DTC Confirmation Procedure ...............................562
Wiring Diagram ................................................
.....563
Diagnostic Procedure ...........................................564
Component Inspection ..........................................567
DTC P1564 ASCD STEERING SWITCH ................568
Component Description ........................................568
CONSULT-II Reference Value in Data Monitor Mode
.568On Board Diagnosis Logic ....................................568
DTC Confirmation Procedure ................................569
Wiring Diagram .....................................................570
Diagnostic Procedure ............................................571
Component Inspection ..........................................574
DTC P1568 ICC FUNCTION ...................................575
On Board Diagnosis Logic ....................................575
DTC Confirmation Procedure ................................575
Diagnostic Procedure ............................................575
DTC P1572 ICC BRAKE SWITCH ..........................576
Component Description ........................................576
CONSULT-II Reference Value in Data Monitor Mode
.576
On Board Diagnosis Logic ....................................576
DTC Confirmation Procedure ................................577
Wiring Diagram .....................................................578
Diagnostic Procedure ............................................579
Component Inspection ..........................................584
DTC P1572 ASCD BRAKE SWITCH ......................585
Component Description ........................................585
CONSULT-II Reference Value in Data Monitor Mode
.585
On Board Diagnosis Logic ....................................585
DTC Confirmation Procedure ................................586
Wiring Diagram .....................................................587
Diagnostic Procedure ............................................588
Component Inspection ..........................................592
DTC P1574 ICC VEHICLE SPEED SENSOR .........593
Component Description ........................................593
On Board Diagnosis Logic ....................................593
DTC Confirmation Procedure ................................593
Diagnostic Procedure ............................................594
DTC P1574 ASCD VEHICLE SPEED SENSOR .....595
Component Description ........................................595
On Board Diagnosis Logic ....................................595
DTC Confirmation Procedure ................................595
Diagnostic Procedure ............................................596
DTC P1715 INPUT SPEED SENSOR (TURBINE
REVOLUTION SENSOR) ........................................597
Description ............................................................597
CONSULT-II Reference Value in Data Monitor Mode
.597
On Board Diagnosis Logic ....................................597
Diagnostic Procedure ..........................................
..597
DTC P1805 BRAKE SWITCH .................................598
Component Description ........................................598
CONSULT-II Reference Value in Data Monitor Mode
.598
On Board Diagnosis Logic ....................................598
DTC Confirmation Procedure ................................599
Wiring Diagram .....................................................600
Diagnostic Procedure ............................................601
Component Inspection ..........................................606
DTC P2100, P2103 THROTTLE CONTROL MOTOR
RELAY .....................................................................607
Component Description ........................................607
CONSULT-II Reference Value in Data Monitor Mode
.607
On Board Diagnosis Logic ....................................607

EC-13
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Revision: 2006 January2006 M35/M45 CONSULT-II Reference Value in Data Monitor Mode
1251
On Board Diagnosis Logic ..................................1251
DTC Confirmation Procedure ..............................1252
Wiring Diagram ...................................................1253
Diagnostic Procedure ..........................................1254
Component Inspection ........................................1258
DTC P1225 TP SENSOR .......................................1259
Component Description .......................................1259
On Board Diagnosis Logic ..................................1259
DTC Confirmation Procedure ..............................1259
Diagnostic Procedure ..........................................1260
Removal and Installation .....................................1260
DTC P1226 TP SENSOR .......................................1261
Component Description .......................................1261
On Board Diagnosis Logic ..................................1261
DTC Confirmation Procedure ..............................1261
Diagnostic Procedure ..........................................1262
Removal and Installation .....................................1262
DTC P1550 BATTERY CURRENT SENSOR ........1263
Component Description .......................................1263
CONSULT-II Reference Value in Data Monitor Mode
1263
On Board Diagnosis Logic ..................................1263
DTC Confirmation Procedure ..............................1264
Wiring Diagram ...................................................1265
Diagnostic Procedure ..........................................1266
Component Inspection ........................................1268
DTC P1551, P1552 BATTERY CURRENT SENSOR 1269
Component Description .......................................1269
CONSULT-II Reference Value in Data Monitor Mode
1269
On Board Diagnosis Logic ..................................1269
DTC Confirmation Procedure ..............................1270
Wiring Diagram ...................................................1271
Diagnostic Procedure ..........................................1272
Component Inspection ........................................1274
DTC P1553 BATTERY CURRENT SENSOR ........1275
Component Description .......................................1275
CONSULT-II Reference Value in Data Monitor Mode
1275
On Board Diagnosis Logic ..................................1275
DTC Confirmation Procedure ..............................1276
Wiring Diagram ...................................................1277
Diagnostic Procedure ..........................................1278
Component Inspection ........................................1280
DTC P1554 BATTERY CURRENT SENSOR ........1281
Component Description .......................................1281
CONSULT-II Reference Value in Data Monitor Mode
1281
On Board Diagnosis Logic ..................................1281
Overall Function Check .......................................
1282
Wiring Diagram ...................................................1283
Diagnostic Procedure ..........................................1284
Component Inspection ........................................1286
DTC P1564 ICC STEERING SWITCH ...................1287
Component Description .......................................1287
CONSULT-II Reference Value in Data Monitor Mode
1287On Board Diagnosis Logic ...................................1287
DTC Confirmation Procedure ..............................1288
Wiring Diagram ....................................................1289
Diagnostic Procedure ..........................................1290
Component Inspection .........................................1293
DTC P1564 ASCD STEERING SWITCH ...............1294
Component Description .......................................1294
CONSULT-II Reference Value in Data Monitor Mode
1294
On Board Diagnosis Logic ...................................1294
DTC Confirmation Procedure ..............................1295
Wiring Diagram ....................................................1296
Diagnostic Procedure ..........................................1297
Component Inspection .........................................1300
DTC P1568 ICC FUNCTION ..................................1301
On Board Diagnosis Logic ...................................1301
DTC Confirmation Procedure ..............................1301
Diagnostic Procedure ..........................................1301
DTC P1572 ICC BRAKE SWITCH .........................1302
Component Description .......................................1302
CONSULT-II Reference Value in Data Monitor Mode
1302
On Board Diagnosis Logic ...................................1302
DTC Confirmation Procedure ..............................1303
Wiring Diagram ....................................................1304
Diagnostic Procedure ..........................................1305
Component Inspection .........................................1309
DTC P1572 ASCD BRAKE SWITCH .....................1311
Component Description .......................................1311
CONSULT-II Reference Value in Data Monitor Mode
1311
On Board Diagnosis Logic ...................................1311
DTC Confirmation Procedure ..............................1312
Wiring Diagram ....................................................1313
Diagnostic Procedure ..........................................1314
Component Inspection .........................................1318
DTC P1574 ICC VEHICLE SPEED SENSOR ........1319
Component Description .......................................1319
On Board Diagnosis Logic ...................................1319
DTC Confirmation Procedure ..............................1319
Diagnostic Procedure ..........................................1320
DTC P1574 ASCD VEHICLE SPEED SENSOR ....1321
Component Description .......................................1321
On Board Diagnosis Logic ...................................1321
DTC Confirmation Procedure ..............................
1321
Diagnostic Procedure ..........................................1322
DTC P1715 INPUT SPEED SENSOR (TURBINE
REVOLUTION SENSOR) .......................................1323
Description ...........................................................1323
CONSULT-II Reference Value in Data Monitor Mode
1323
On Board Diagnosis Logic ...................................1323
Diagnostic Procedure ..........................................1323
DTC P1800 VIAS CONTROL SOLENOID VALVE 1324
Component Description .......................................1324
CONSULT-II Reference Value in Data Monitor Mode
1324
On Board Diagnosis Logic ...................................1324
DTC Confirmation Procedure ..............................1324

ENGINE CONTROL SYSTEM
EC-31
[VQ35DE]
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Revision: 2006 January2006 M35/M45
Multiport Fuel Injection (MFI) SystemNBS004S3
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to control the engine system under normal conditions.
*2: This signal is sent to the ECM through CAN communication line.
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from the crankshaft position sensor (POS), camshaft position
sensor (PHASE) and the mass air flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.

During warm-up
When starting the engine
During acceleration
Hot-engine operation
When selector lever is changed from N to D
High-load, high-speed operation

During deceleration
During high engine speed operation
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Engine speed*
3
Piston position
Fuel injection
& mixture ratio
controlFuel injector Camshaft position sensor (PHASE)
Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Battery
Battery voltage*
3
Knock sensor Engine knocking condition
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2*
1Density of oxygen in exhaust gas
ABS actuator and electric unit (control unit)*
2VDC/TCS operation command
Air conditioner switch*
2Air conditioner operation
Wheel sensor*
2Vehicle speed

AIR CONDITIONING CUT CONTROL
EC-35
[VQ35DE]
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Revision: 2006 January2006 M35/M45
AIR CONDITIONING CUT CONTROLPFP:23710
Input/Output Signal ChartNBS004S6
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
System DescriptionNBS004S7
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
When the accelerator pedal is fully depressed.
When cranking the engine.
At high engine speeds.
When the engine coolant temperature becomes excessively high.
When operating power steering during low engine speed or low vehicle speed.
When engine speed is excessively low.
When refrigerant pressure is excessively low or high.
Sensor Input Signal to ECM ECM function Actuator
Air conditioner switch*
1Air conditioner ON signal
Air conditioner
cut controlAir conditioner relay Accelerator pedal position sensor Accelerator pedal position
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
2
Engine coolant temperature sensor Engine coolant temperature
Battery
Battery voltage*
2
Refrigerant pressure sensor Refrigerant pressure
Power steering pressure sensor Power steering operation
Wheel sensor*
1Vehicle speed

EC-36
[VQ35DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Revision: 2006 January2006 M35/M45
AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
System DescriptionNBS004S8
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/
h (25 MPH) and 144 km/h (89 MPH).
ECM controls throttle angle of electric throttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE lamp and SET lamp in combination meter. If any malfunc-
tion occurs in ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press MAIN switch. (The CRUISE lamp in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89
MPH), press SET/COAST switch. (Then SET lamp in combination meter illuminates.)
ACCEL OPERATION
If the RESUME/ACCELERATE switch is pressed during cruise control driving, increase the vehicle speed until
the switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
CANCEL switch is pressed
More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
Brake pedal is depressed
Selector lever is changed to N, P, R position
Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
TCS system is operated
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE switch.
Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
Sensor Input signal to ECM ECM function Actuator
ASCD brake switch Brake pedal operation
ASCD vehicle speed controlElectric throttle control
actuator Stop lamp switch Brake pedal operation
ASCD steering switch ASCD steering switch operation
Park/Neutral position (PNP)
switchGear position
Wheel sensor* Vehicle speed
TCM* Powertrain revolution

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-37
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Revision: 2006 January2006 M35/M45
COAST OPERATION
When the SET/COAST switch is pressed during cruise control driving, decrease vehicle set speed until the
switch is released. And then ASCD will keep the new set speed.
RESUME OPERATION
When the RESUME/ACCELERATE switch is pressed after cancel operation other than pressing MAIN switch
is performed, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition must
meet following conditions.
Brake pedal is released
A/T selector lever is in other than P and N positions
Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH)
Component DescriptionNBS004S9
ASCD STEERING SWITCH
Refer to EC-568 .
ASCD BRAKE SWITCH
Refer to EC-585 , and EC-707 .
STOP LAMP SWITCH
Refer to EC-585 , EC-598 and EC-707
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EC-607 , EC-613 , EC-619 and EC-624 .
ASCD INDICATOR
Refer to EC-714 .

BASIC SERVICE PROCEDURE
EC-77
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Revision: 2006 January2006 M35/M45
BASIC SERVICE PROCEDUREPFP:00018
Basic InspectionNBS004SQ
1. INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.
2. Open engine hood and check the following:
–Harness connectors for improper connections
–Wiring harness for improper connections, pinches and cut
–Vacuum hoses for splits, kinks and improper connections
–Hoses and ducts for leaks
–Air cleaner clogging
–Gasket
3. Confirm that electrical or mechanical loads are not applied.
–Headlamp switch is OFF.
–Air conditioner switch is OFF.
–Rear window defogger switch is OFF.
–Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
5. Run engine at about 2,000 rpm for about 2 minutes under no
load.
6. Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
>> GO TO 3
SEF983U
SEF976U
SEF977U

EC-86
[VQ35DE]
BASIC SERVICE PROCEDURE
Revision: 2006 January2006 M35/M45
DETAILED PROCEDURE
1. INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.
2. Open engine hood and check the following:
–Harness connectors for improper connections
–Wiring harness for improper connections, pinches and cut
–Vacuum hoses for splits, kinks and improper connections
–Hoses and ducts for leaks
–Air cleaner clogging
–Gasket
3. Confirm that electrical or mechanical loads are not applied.
–Head lamp switch is OFF.
–Air conditioner switch is OFF.
–Rear window defogger switch is OFF.
–Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
5. Run engine at about 2,000 rpm for about 2 minutes under no
load.
6. Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
>> GO TO 3.
SEF983U
SEF976U
SEF977U