2007 INFINITI FX35 brake sensor

TROUBLE DIAGNOSIS FOR SYSTEM BRC-39
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
Pressure Sensor CircuitNFS000NM
DTC C1142
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK STOP LAMP SWITCH CONNECTOR
1. Disconnect stop lamp switch connector and ABS actuator and electric unit (control unit) connector, check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or
replace terminal.
2. Reconnect connectors and perform ABS actuator and electric unit (control unit) self-diagnosis again.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 3.
3. CHECK STOP LAMP SWITCH
1. Turn ignition switch OFF and disconnect stop lamp switch har- ness connector.
2. Operate stop lamp switch and check continuity between stop lamp switch harness connector terminals.
OK or NG
OK >> GO TO 4.
NG >> Replace stop lamp switch. Refer to BR-7, "
Components" .
4. CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF and disconnect stop lamp switch con- nector E210 and ABS actuator and electric unit (control unit)
connector E56.
2. Check continuity between stop lamp switch harness connector and ABS actuator and electric unit (control unit) harness con-
nector.
OK or NG
OK >> GO TO 5.
NG >> Open or short in harness between stop lamp switch and ABS actuator and electric unit (control unit). Repair or replace applied harness.
Self-diagnostic results
PRESS SEN CIRCUIT
Terminal Condition Continuity
1 − 2 Release stop lamp switch
(When brake pedal is depressed.) Ye s
Push stop lamp switch
(When brake pedal is released.) No
SFIA3392E
ABS actuator and electric unit (control unit) Stop lamp switch Continuity
41 2 Yes
SFIA1436E

BRC-40
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 July 2007 FX35/FX45
5. CHECK PRESSURE SENSOR CONNECTOR
1. Disconnect pressure sensor connector and ABS actuator and electric unit (control unit) connector, check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or
replace terminal.
2. Reconnect connectors and perform ABS actuator and electric unit (control unit) self-diagnosis again.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 6.
6. CHECK PRESSURE SENSOR HARNESS
1. Turn ignition switch OFF and disconnect pressure sensor con- nector E53 and ABS actuator and electric unit (control unit) con-
nector E56.
2. Check continuity between ABS actuator and electric unit (control unit) harness connector and pressure sensor harness connec-
tor.
OK or NG
OK >> GO TO 7.
NG >> If the open or short in harness, repair or replace harness.
7. CHECK PRESSURE SENSOR
1. Connect pressure sensor connector and ABS actuator and electric unit (control unit) connector.
2. Perform “DATA MONITOR” of the “PRESS SENSOR” to check if the status is normal.
OK or NG
OK >> INSPECTION END
NG >> Pressure sensor is damaged or malfunctioning, replace pressure sensor.
ABS actuator and electric unit (control unit) Pressure sensor Continuity
19 1 Ye s
20 2
18 3
SFIA1188E
Condition Data monitor display
When brake pedal is depressed. 0 to 170 bar
When brake pedal is released. Approx. 0 bar

TROUBLE DIAGNOSIS FOR SYMPTOMS BRC-53
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Excessive ABS Function Operation FrequencyNFS000NY
1. CHECK FRONT AND REAR AXLE
Make sure there is no excessive looseness in the front and rear axles.
OK or NG
OK >> GO TO 2.
NG >> Check front or rear axle system.
2. CHECK WHEEL SENSOR
Perform following inspection for wheel sensor:

Sensor mount and damage inspection

Sensor rotor mount and damage inspection

Sensor connector connection inspection

Sensor harness inspection
OK or NG
OK >> GO TO 3.
NG >> Replace sensor or sensor rotor.
3. CHECK ABS WARNING LAMP DISPLAY
Make sure warning lamp turns off approximately 2 seconds after the ignition switch is turned ON or when driv-
ing.
OK or NG
OK >> Normal
NG >> Perform self-diagnosis. Refer to BRC-25, "
Self-Diagnosis" .
Unexpected Pedal ReactionNFS000NZ
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke.
Is the stroke too long?
YES >>
Bleed air from brake piping.

Check brake pedal, brake booster, and master cylinder mount for play, looseness, and brake
system for fluid leaks, etc. If any malfunctions are found, make repair.
NO >> GO TO 2.
2. CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector E56 and make sure that braking force is suf-
ficient when ABS in not operating. After the inspection, reconnect connector.
OK or NG
OK >> GO TO 2. CHECK WHEEL SENSOR. Refer to BRC-53, "Excessive ABS Function Operation Fre-
quency" .
NG >> Check brake system.

BRC-54
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 July 2007 FX35/FX45
The Braking Distance is LongNFS000O0
CAUTION:
On slippery road surfaces, the stopping distance might be longer with the ABS operating than when
the ABS is not operating.
1. CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector E56 to deactivate ABS. In this condition,
check stopping distance. After inspection, connect connector.
OK or NG
OK >>
Bleed air from brake piping.

Check brake system.
NG >> GO TO 2. CHECK WHEEL SENSOR. Refer to BRC-53, "
Excessive ABS Function Operation Fre-
quency" .
The ABS Function Does Not OperateNFS000O1
CAUTION:
The ABS does not operate when the speed is 10 km/h (6 MPH) or less.
1. CHECK ABS WARNING LAMP DISPLAY
Make sure warning lamp turns off approximately 2 seconds after the ignition switch is turned ON or when driv-
ing.
OK or NG
OK >> GO TO 2. CHECK WHEEL SENSOR. Refer to BRC-53, "Excessive ABS Function Operation Fre-
quency" .
NG >> Perform self-diagnosis. Refer to BRC-25, "
Self-Diagnosis" .
Pedal Vibration or ABS Operation Sound OccursNFS000O2
CAUTION:
Under the following conditions, when brake pedal is lightly depressed (just place a foot on it), ABS is
activated and vibration is felt. However, this is normal.

When shifting gears

When driving on slippery road

During cornering at high speed

When passing over bumps or grooves

When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or higher]
1. SYMPTOM CHECK 1
Check if pedal vibration or operation sound occurs when engine is started.
OK or NG
OK >> Perform self-diagnosis. Refer to BRC-25, "Self-Diagnosis" .
NG >> GO TO 2.
2. SYMPTOM CHECK 2
Check symptom when electrical component (headlamps, etc.) switches are operated.
Does the symptom occur when the electrical component (head lamp, etc.) switches are operated?
YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to ABS actuator and electric unit (control unit) (or its wiring), and if there is, move it farther away.
NO >> GO TO 2. CHECK WHEEL SENSOR. Refer to BRC-53, "
Excessive ABS Function Operation Fre-
quency" .

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) BRC-61
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Be careful of the following when installing ABS actuator and electric unit (control unit).

Tighten the mounting bolts and nuts to the specified torque.

After the work, bleed air from brake piping. Refer to BR-10, "Bleeding Brake System" .

After installing vehicle harness connector in the actuator, make sure connector is securely locked.

When replacing ABS actuator and electric unit (control unit), calibrate steering angle sensor neu-
tral position and decel G sensor. Refer to BRC-6, "
ON-VEHICLE SERVICE" .

DI-28
UNIFIED METER AND A/C AMP
Revision: 2006 July 2007 FX35/FX45
UNIFIED METER AND A/C AMPPFP:27760
System DescriptionNKS00300

For the unified meter and A/C amp., the signal required for controlling the combination meter are inte-
grated in the A/C auto amp.

The unified meter and A/C amp. corresponds to a CONSULT-II function (self-diagnosis results, CAN diag-
nosis support monitor, data monitor).
COMBINATION METER CONTROL FUNCTION

Unified meter and A/C amp. receives necessary information for combination meter from each unit by CAN
communication.

Unified meter and A/C amp. transmits a signals with communication line (TX, RX) between unified meter
and A/C amp. and combination meter.
Input/output signals between unified meter and A/C amp. and combination meter.
NOTE:
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malfunctioning. Refer to DI-8,
"FAIL-SAFE" . Unit Input Output
Unified meter and A/C amp.

Seat belt buckle switch signal (Driver's side)

Parking brake signal

Illumination control nighttime required signal

Refuel status signal

Low-fuel warning lamp condition signal

Combination meter receive error signal

Delivery destination data signal

Combination meter specifications signal

Vehicle speed signal (8-pulse)

Engine speed signal

Engine coolant temperature signal

Fuel level sensor signal (resistance value)

Malfunction indicator lamp signal

ABS warning lamp signal

Low tire pressure warning lamp signal

Run-flat tire warning lamp signal

Brake warning lamp signal

A/T CHECK warning lamp signal

ICC warning lamp signal

Oil pressure switch signal

Door switch signal

AWD warning lamp signal

Key warning lamp signal

VDC OFF indicator lamp signal

SLIP indicator lamp signal

CRUISE indicator lamp signal

SET indicator lamp signal

High beam request signal

Turn indicator signal

Snow mode switch signal

ICC system display signal

Shift position indicator signal

Manual mode indicator signal

Manual mode gear position signal

CAN communication condition signal of A/T

Position lights request signal

Buzzer output signal

EC-6Revision: 2006 July 2007 FX35/FX45
On Board Diagnosis Logic ...................................
.513
DTC Confirmation Procedure .............................. .513
Diagnostic Procedure .......................................... .513
DTC P1564 ICC STEERING SWITCH ................... .515
Component Description ....................................... .515
CONSULT-II Reference Value in Data Monitor Mode .515
On Board Diagnosis Logic ................................... .515
DTC Confirmation Procedure .............................. .516
Wiring Diagram .................................................... .517
Diagnostic Procedure .......................................... .518
Component Inspection ......................................... .521
DTC P1564 ASCD STEERING SWITCH ............... .522
Component Description ....................................... .522
CONSULT-II Reference Value in Data Monitor Mode .522
On Board Diagnosis Logic ................................... .522
DTC Confirmation Procedure .............................. .523
Wiring Diagram .................................................... .524
Diagnostic Procedure .......................................... .525
Component Inspection ......................................... .527
DTC P1568 ICC FUNCTION .................................. .529
On Board Diagnosis Logic ................................... .529
DTC Confirmation Procedure .............................. .529
Diagnostic Procedure .......................................... .529
DTC P1572 ICC BRAKE SWITCH ......................... .530
Component Description ....................................... .530
CONSULT-II Reference Value in Data Monitor Mode .530
On Board Diagnosis Logic ................................... .530
DTC Confirmation Procedure .............................. .531
Wiring Diagram .................................................... .532
Diagnostic Procedure .......................................... .533
Component Inspection ......................................... .538
DTC P1572 ASCD BRAKE SWITCH ..................... .539
Component Description ....................................... .539
CONSULT-II Reference Value in Data Monitor Mode .539
On Board Diagnosis Logic ................................... .539
DTC Confirmation Procedure .............................. .540
Wiring Diagram .................................................... .541
Diagnostic Procedure .......................................... .542
Component Inspection ......................................... .546
DTC P1574 ICC VEHICLE SPEED SENSOR ........ .547
Component Description ....................................... .547
On Board Diagnosis Logic ................................... .547
DTC Confirmation Procedure .............................. .547
Diagnostic Procedure .......................................... .548
DTC P1574 ASCD VEHICLE SPEED SENSOR .... .549
Component Description ....................................... .549
On Board Diagnosis Logic ................................... .549
DTC Confirmation Procedure .............................. .549
Diagnostic Procedure .......................................... .550
DTC P1715 INPUT SPEED SENSOR (TURBINE
REVOLUTION SENSOR) ....................................... .551
Description ........................................................... .551
CONSULT-II Reference Value in Data Monitor Mode .551 On Board Diagnosis Logic ...................................
.551
Diagnostic Procedure ........................................... .551
DTC P1805 BRAKE SWITCH ................................ .552
Description ........................................................... .552
CONSULT-II Reference Value in Data Monitor Mode .552
On Board Diagnosis Logic ................................... .552
DTC Confirmation Procedure ............................... .552
Wiring Diagram .................................................... .553
Diagnostic Procedure ........................................... .554
Component Inspection ......................................... .556
DTC P2100, P2103 THROTTLE CONTROL MOTOR
RELAY .................................................................... .557
Component Description ....................................... .557
CONSULT-II Reference Value in Data Monitor Mode .557
On Board Diagnosis Logic ................................... .557
DTC Confirmation Procedure ............................... .557
Wiring Diagram .................................................... .559
Diagnostic Procedure ........................................... .560
DTC P2101 ELECTRIC THROTTLE CONTROL
FUNCTION ............................................................. .563
Description ........................................................... .563
On Board Diagnosis Logic ................................... .563
DTC Confirmation Procedure ............................... .563
Wiring Diagram .................................................... .564
Diagnostic Procedure ........................................... .565
Component Inspection ......................................... .568
Removal and Installation ...................................... .568
DTC P2118 THROTTLE CONTROL MOTOR ........ .569
Component Description ....................................... .569
On Board Diagnosis Logic ................................... .569
DTC Confirmation Procedure ............................... .569
Wiring Diagram .................................................... .570
Diagnostic Procedure ........................................... .571
Component Inspection ......................................... .572
Removal and Installation ...................................... .573
DTC P2119 ELECTRIC THROTTLE CONTROL
ACTUATOR ............................................................ .574
Component Description ....................................... .574
On Board Diagnosis Logic ................................... .574
DTC Confirmation Procedure ............................... .574
Diagnostic Procedure ........................................... .575
DTC P2122, P2123 APP SENSOR ........................ .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 ......................................... .582
Removal and Installation ...................................... .582
DTC P2127, P2128 APP SENSOR ........................ .583
Component Description ....................................... .583
CONSULT-II Reference Value in Data Monitor Mode .583
On Board Diagnosis Logic ................................... .583
DTC Confirmation Procedure ...............................

EC-7
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Revision: 2006 July 2007 FX35/FX45
Wiring Diagram ...................................................
. 585
Diagnostic Procedure .......................................... . 586
Component Inspection ........................................ . 589
Removal and Installation ..................................... . 589
DTC P2135 TP SENSOR ....................................... . 590
Component Description ....................................... . 590
CONSULT-II Reference Value in Data Monitor Mode . 590
On Board Diagnosis Logic .................................. . 590
DTC Confirmation Procedure .............................. . 591
Wiring Diagram ................................................... . 592
Diagnostic Procedure .......................................... . 593
Component Inspection ........................................ . 596
Removal and Installation ..................................... . 596
DTC P2138 APP SENSOR .................................... . 597
Component Description ....................................... . 597
CONSULT-II Reference Value in Data Monitor Mode . 597
On Board Diagnosis Logic .................................. . 597
DTC Confirmation Procedure .............................. . 598
Wiring Diagram ................................................... . 599
Diagnostic Procedure .......................................... . 600
Component Inspection ........................................ . 604
Removal and Installation ..................................... . 604
DTC P2A00, P2A03 A/F SENSOR 1 ..................... . 605
Component Description ....................................... . 605
CONSULT-II Reference Value in Data Monitor Mode . 605
On Board Diagnosis Logic .................................. . 605
DTC Confirmation Procedure .............................. . 606
Wiring Diagram ................................................... . 607
Diagnostic Procedure .......................................... . 610
Removal and Installation ..................................... . 616
ASCD BRAKE SWITCH ........................................ . 617
Component Description ....................................... . 617
CONSULT-II Reference Value in Data Monitor Mode . 617
Wiring Diagram ................................................... . 618
Diagnostic Procedure .......................................... . 619
Component Inspection ........................................ . 623
ASCD INDICATOR ................................................ . 624
Component Description ....................................... . 624
CONSULT-II Reference Value in Data Monitor Mode . 624
Wiring Diagram ................................................... . 625
Diagnostic Procedure .......................................... . 626
ELECTRICAL LOAD SIGNAL ............................... . 627
Description .......................................................... . 627
CONSULT-II Reference Value in Data Monitor Mode . 627
Diagnostic Procedure .......................................... . 627
FUEL INJECTOR ................................................... . 629
Component Description ....................................... . 629
CONSULT-II Reference Value in Data Monitor Mode . 629
Wiring Diagram ................................................... . 630
Diagnostic Procedure .......................................... . 631
Component Inspection ........................................ . 635
Removal and Installation ..................................... . 635 FUEL PUMP ...........................................................
.636
Description ........................................................... .636
CONSULT-II Reference Value in Data Monitor Mode .636
Wiring Diagram .................................................... .637
Diagnostic Procedure .......................................... .638
Component Inspection ......................................... .641
Removal and Installation ..................................... .641
ICC BRAKE SWITCH ............................................ .642
Component Description ....................................... .642
CONSULT-II Reference Value in Data Monitor Mode .642
Wiring Diagram .................................................... .643
Diagnostic Procedure .......................................... .644
Component Inspection ......................................... .649
IGNITION SIGNAL ................................................. .650
Component Description ....................................... .650
Wiring Diagram .................................................... .651
Diagnostic Procedure .......................................... .656
Component Inspection ......................................... .661
Removal and Installation ..................................... .662
REFRIGERANT PRESSURE SENSOR ................. .663
Component Description ....................................... .663
Wiring Diagram .................................................... .664
Diagnostic Procedure .......................................... .665
Removal and Installation ..................................... .667
SNOW MODE SWITCH ......................................... .668
Description ........................................................... .668
CONSULT-II Reference Value in the Data Monitor
Mode .................................................................... .668
Wiring Diagram .................................................... .669
Diagnostic Procedure .......................................... .670
Component Inspection ......................................... .672
MIL AND DATA LINK CONNECTOR ..................... .673
Wiring Diagram .................................................... .673
SERVICE DATA AND SPECIFICATIONS (SDS) ... .675
Fuel Pressure ...................................................... .675
Idle Speed and Ignition Timing ............................ .675
Calculated Load Value ......................................... .675
Mass Air Flow Sensor .......................................... .675
Intake Air Temperature Sensor ............................ .675
Engine Coolant Temperature Sensor .................. .675
Air Fuel Ratio (A/F) Sensor 1 Heater ................... .675
Heated Oxygen sensor 2 Heater ......................... .675
Crankshaft Position Sensor (POS) ...................... .675
Camshaft Position Sensor (PHASE) ................... .675
Throttle Control Motor .......................................... .675
Fuel Injector ......................................................... .676
Fuel Pump ........................................................... .676
VK45DE
INDEX FOR DTC .................................................... .677
DTC No. Index ..................................................... .677
Alphabetical Index ............................................... .681
PRECAUTIONS ..................................................... .685
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .............................................................. .685