brake sensor INFINITI FX35 2005 Repair Manual

AT-176
DTC P1841 ATF PRESSURE SWITCH 1
Revision: 2005 July 2005 FX
Diagnostic ProcedureACS002QM
1. CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select “ECU INPUT SIGNALS” or “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Drive vehicle in the “D” position (3rd
4th gear), and confirm
the ON/OFF actuation of the “ATF PRES SW 1”.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT- 1 8 3 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. DETECT MALFUNCTIONING ITEM
Check the following.

The A/T assembly harness connector pin terminals for damage or loose connection with harness connec-
tor.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 4 3 , "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2" .
NG >> Repair or replace damaged parts.
4. CHECK DTC
Perform “DTC Confirmation Procedure”.

Refer to AT- 1 7 5 , "DTC Confirmation Procedure" .
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
Item name Condition Display value
ATF PRES SW 1 Front brake engaged. Refer to
AT- 2 1
.ON
Front brake disengaged. Refer to AT- 2 1
.OFF
PCIA0067E

AT-302
DISASSEMBLY
Revision: 2005 July 2005 FX
48. Remove needle bearing from transmission case.
49. Remove revolution sensor from transmission case. CAUTION:

Do not subject it to impact by dropping or hitting it.

Do not disassemble.

Do not allow metal filings, etc. to get on the sensor's front
edge magnetic area.

Do not place in an area affected by magnetism.
50. Remove reverse brake snap ring (fixing plate) using 2 flat- bladed screwdrivers.
NOTE:
Press out snap ring from the transmission case oil pan side gap
using a flat-bladed screwdriver, and remove it using another
screwdriver.
51. Remove reverse brake retaining plate from transmission case.

Check facing for burns, cracks or damage. If necessary,
replace the plate.
52. Remove N-spring from transmission case.
53. Remove reverse brake drive plates, driven plates and dish plate from transmission case.

Check facing for burns, cracks or damage. If necessary,
replace the plate.
SCIA5031E
SCIA2320E
SCIA5032E
SCIA5214E
SCIA2322E

ASSEMBLY AT-333
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2005 July 2005 FX
22. Measure clearance between retaining plate and snap ring. If not
within specified clearance, select proper retaining plate.
23. Install needle bearing to transmission case. CAUTION:
Apply petroleum jelly to needle bearing.
24. Install revolution sensor to transmission case. CAUTION:

Do not subject it to impact by dropping or hitting it.

Do not disassemble.

Do not allow metal filings, etc., to get on the sensor's
front edge magnetic area.

Do not place in an area affected by magnetism.
25. As shown in the figure, use the drift to drive rear oil seal into the rear extension (2WD models) or adapter case (AWD models)
until it is flush.
CAUTION:

Apply ATF to rear oil seal.

Do not reuse rear oil seal. Specified clearance “A”:
Standard: 0.7 - 1.1mm (0.028 - 0.043 in)
Retaining plate: Refer to AT- 3 5 3 , "
Reverse Brake" .
SCIA3129E
SCIA5031E
: 5.8 N·m (0.59 kg-m, 51 in-lb)
SCIA2320E
SCIA5477E

ASSEMBLY AT-345
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2005 July 2005 FX
6. Install O-ring to input clutch assembly.
CAUTION:

Do not reuse O-ring.

Apply ATF to O-ring.
7. Install converter housing to transmission case. CAUTION:
Do not reuse self-sealing bolt.
8. Make sure that brake band does not close turbine revolution sensor hole.
9. Install control valve with TCM.
a. Connect TCM connector and park/neutral position switch con- nector.
SCIA5011E
Converter housing mounting bolt:
: 52 N·m (5.3 kg-m, 38 ft-lb)
Self-sealing bolt: : 61 N·m (6.2 kg-m, 45 ft-lb)
SCIA3427E
SCIA5034E
SCIA5449E

SERVICE DATA AND SPECIFICATIONS (SDS) AT-353
D E
F
G H
I
J
K L
M A
B
AT
Revision: 2005 July 2005 FX
Turbine Revolution SensorACS00859
Vehicle Speed Sensor A/T (Revolution Sensor)ACS0085A
Reverse BrakeACS0085B
*: Always check with the Parts Department for the latest parts information.
To ta l E n d P l a yACS0085C
BEARING RACE FOR ADJUSTING TOTAL END PLAY
*: Always check with the Parts Department for the latest parts information. Name Condition Data (Approx.)
Turbine revolution
sensor 1 When running at 50 km/h (31 MPH) in 4th speed with the closed throttle position switch
“OFF”. 1.3 (kHz)
Turbine revolution
sensor 2 When moving at 20 km/h (12 MPH) in 1st speed with the closed throttle position switch
“OFF”.
Name Condition Data (Approx.)
Revolution sensor When moving at 20 km/h (12 MPH). 185 (Hz)
Thickness of retaining plates Thickness mm (in) Part number*
4.2 (0.165)
4.4 (0.173)
4.6 (0.181)
4.8 (0.189)
5.0 (0.197)
5.2 (0.205) 31667 90X14
31667 90X15
31667 90X16
31667 90X17
31667 90X18
31667 90X19
Total end play mm (in) 0.25 - 0.55 (0.0098 - 0.0217)
Thickness mm (in) Part number*
1.2 (0.047)
1.4 (0.055)
1.6 (0.063)
1.8 (0.071)
2.0 (0.079) 31435 90X02
31435 90X03
31435 90X04
31435 90X05
31435 90X06

INTELLIGENT KEY SYSTEM BL-115
C
D E
F
G H
J
K L
M A
B
BL
Revision: 2005 July 2005 FX
26 P/L Stop lamp switch — Brake pedal depressed (ON) 5
Brake pedal not depressed (OFF) 0
27 L/W Ignition knob switch — Press ignition knob. 12
Return ignition knob to LOCK position. 0
28 W/B Door unlock sensor — Door is locking → unlock 5 → 0
29 GY Door request switch
(back door) — Back door request switch operation:
Press (ON) 0
Other than the above (OFF) 5
31 Y/B Steering lock unit ground — — 0
32 R/B Steering lock unit com-
munication LOCK Press ignition knob with Intelligent Key
inside vehicle.
Other than the above 5
35 LG Inside key antenna (+)
signal
(Dashboard)
LOCK Any door open
→ Close (Door switch:
ON → OFF)
Ignition knob switch: ON (press ignition
knob.)
36 PU Inside key antenna (-)
signal
(Dashboard)
37 G Outside antenna RH (+)
LOCK Passenger door request switch opera-
tion (Switch: ON)
38 PU/
W Outside antenna RH (-)
39 R/Y Detention switch LOCK A/T selector lever in “P” position. 0
A/T selector lever in other position. Battery voltage
40 BR/
W Door lock relay LOCK
Door request switch (passenger side)
pressed Battery voltage
→ 0 → Battery
voltage
Te r -
minal
No. Wire
color Item Condition
Voltage (V)
(Approx.)
Ignition knob
position Operation or conditions
SIIA1911J
SIIA1910J
SIIA1910J

INTELLIGENT KEY SYSTEM BL-121
C
D E
F
G H
J
K L
M A
B
BL
Revision: 2005 July 2005 FX
ACTIVE TEST
ACC SW [ON/OFF] Displays status (Ignition switch ACC position: ON/Ignition switch OFF position:
OFF) as judged from ignition switch signal.
DOOR STAT SW [ON/OFF] Displays status from door unlock sensor ON/OFF condition.
STOP LAMP SW [ON/OFF] Displays status (Brake pedal depress: ON/brake pedal not depress: OFF) as
judged from stop lamp switch signal.
P RANGE SW [ON/OFF] Displays status from park/neutral position switch ON/OFF condition.
BD OPEN SW [ON/OFF] Displays status (Back door open: ON/Back door closed: OFF) as judged from back
door opener switch signal.
CAN COMM [ON/OFF] Display CAN communication system.
CAN CIRC 1 [ON/OFF] Display CAN communication system.
CAN CIRC 2 [ON/OFF] Display CAN communication system.
CAN CIRC 3 [ON/OFF] Display CAN communication system.
CAN CIRC 4 [ON/OFF] Display CAN communication system. Monitor item [OPERATION] Description
Monitor item Description
DOOR LOCK/UNLOCK This test is able to check all door lock actuators lock/unlock operation. These
actuators lock when “ON” on CONSULT-II screen is touched.
OUTSIDE BUZZER This test is able to check Intelligent Key warning buzzer operation. The buzzer will
be activated on when “ON” on CONSULT-II screen is touched.
INSIDE BUZZER This test is able to check buzzer (bultin combination meter) operation. The buzzer
will be activated on when “ON” on CONSULT-II screen is touched.
INDICATOR This test is able to check warning lamp operation. The lamp will be turned on
when “ON” on CONSULT-II screen is touched.

BRAKE MASTER CYLINDER BR-13
C
D E
G H
I
J
K L
M A
B
BR
Revision: 2005 July 2005 FX
BRAKE MASTER CYLINDERPFP:46010
On-Board InspectionAFS001N2
LEAK INSPECTION

Check for leaking in master cylinder attachment portion, reservoir tank, and brake tube connections.
Removal and InstallationAFS001N3
CAUTION:
Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas, wash it away with water immediately.
REMOVAL
1. Drain brake fluid. Refer to BR-9, "Drain and Refill" .
2. Disconnect harness connectors for fluid level sensor and pressure sensor.
3. Using a flare nut wrench, disconnect brake tube from master cylinder assembly.
4. Remove master cylinder assembly fixing nut, remove master cylinder assembly from the vehicle. Refer to BR-16, "
Removal and Installation" .
INSTALLATION

Install in the reverse order of removal.
–Refill brake fluid and bleed air. Refer to BR-10, "Bleeding Brake System" .
CAUTION:

Refill with new brake fluid “DOT3”.

Do not reuse drained brake fluid.
ComponentsAFS001N4
SFIA2157E

BR-14
BRAKE MASTER CYLINDER
Revision: 2005 July 2005 FX
Disassembly and AssemblyAFS001N5
DISASSEMBLY
CAUTION:

Master cylinder can not be disassembled.

Remove reservoir tank only when absolutely necessary.
1. Remove clip.
2. Remove reservoir tank and grommet from master cylinder assembly.
ASSEMBLY
CAUTION:

Never use mineral oil such as kerosene, gasoline during the cleaning and assembly process.

Do not drop parts. If a part is dropped, do not use it.
1. Apply brake fluid grommet and attach to master cylinder assembly. CAUTION:
Do not reuse grommet.
2. Install reservoir tank onto master cylinder assembly.
3. Install clip.
1. Reservoir cap 2. Strainer 3. Float
4. Reservoir tank 5. Grommet 6. Master cylinder sub-assembly
7. Clip 8. Pressure sensor 9. Pressure sensor (Only ICC models)
SFIA1132E
SFIA1132E

BRC-1
BRAKE CONTROL SYSTEM
F BRAKES
CONTENTS
C
D E
G H
I
J
K L
M
SECTION BRC
A
B
BRC
Revision: 2005 July 2005 FX
BRAKE CONTROL SYSTEM
VDC/TCS/ABS
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
Precautions for Brake System ............................. ..... 3
Precautions for Brake Control ............................. ..... 3
PREPARATION ...................................................... ..... 5
Special Service Tools .......................................... ..... 5
Commercial Service Tools ................................... ..... 5
ON-VEHICLE SERVICE ........................................ ..... 6
Adjustment of Steering Angle Sensor Neutral Posi-
tion ...................................................................... ..... 6
Calibration of Decel G Sensor (AWD Model) ...... ..... 6
SYSTEM DESCRIPTION ....................................... ..... 8
System Diagram .................................................. ..... 8
VDC Function ...................................................... ..... 8
TCS Function ...................................................... ..... 8
ABS Function ...................................................... ..... 8
EBD Function ...................................................... ..... 9
Fail-Safe Function ............................................... ..... 9
VDC / TCS SYSTEM ........................................ ..... 9
ABS, EBD SYSTEM ......................................... ..... 9
Hydraulic Circuit Diagram ................................... ... 10
CAN COMMUNICATION ....................................... ....11
System Description ............................................. .... 11
TROUBLE DIAGNOSIS ......................................... ... 12
How to Proceed with Diagnosis .......................... ... 12
BASIC CONCEPT ............................................ ... 12
DIAGNOSIS FLOWCHART ............................. ... 13
ASKING COMPLAINTS ................................... ... 14
EXAMPLE OF DIAGNOSIS SHEET ................ ... 14
Component Installation Location ......................... ... 15
Schematic ........................................................... ... 16
Wiring Diagram — VDC — .................................. ... 17
Control Unit Input/Output Signal Standard .......... ... 23
REFERENCE VALUE FROM CONSULT-II ...... ... 23
CONSULT-II Functions ........................................ ... 25
CONSULT-II MAIN FUNCTION ........................ ... 25
CONSULT-II BASIC OPERATION PROCEDURE ... 26
SELF-DIAGNOSIS ........................................... ... 27
DATA MONITOR .............................................. ... 30
ACTIVE TEST .................................................. ... 33
For Fast and Accurate Diagnosis ........................ ... 35
PRECAUTIONS FOR DIAGNOSIS .................. ... 35
Basic Inspection .................................................. ... 36
BASIC INSPECTION 1: BRAKE FLUID
AMOUNT, LEAKS, AND BRAKE PADS INSPEC-
TION ................................................................. ... 36
BASIC INSPECTION 2: POWER SYSTEM TER-
MINAL LOOSENESS AND BATTERY INSPEC-
TION ................................................................. ... 36
BASIC INSPECTION 3: ABS WARNING LAMP,
VDC OFF INDICATOR LAMP, SLIP INDICATOR
LAMP AND BRAKE WARNING LAMP INSPEC-
TION ................................................................. ... 37
Inspection 1: Wheel Sensor Circuit ..................... ... 37
Inspection 2: Engine System ............................... ... 39
Inspection 3: VDC/TCS/ABS Control Unit Circuit ... 40
Inspection 4: Pressure Sensor Circuit ................. ... 40
Inspection 5: Steering Angle Sensor Circuit ........ ... 42
Inspection 6: Yaw Rate/Side G Sensor (2WD
Model), Yaw Rate/Side/Decel G sensor (AWD Mod-
els) Circuit ............................................................ ... 44
Inspection 7: Solenoid and VDC Change-Over
Valve Circuit ......................................................... ... 46
Inspection 8: Actuator Motor Circuit .................... ... 47
Inspection 9: ABS Actuator and Electric Unit (Con-
trol Unit) Power Supply and Ground Circuit ......... ... 48
Inspection 10: Stop Lamp Switch Circuit ............. ... 50
Inspection 11: Brake Fluid Level Switch Circuit ... ... 51
Inspection 12: When “ST ANG SEN SIGNAL”
Appears on Self-diagnosis Results Display ......... ... 52
Inspection 13: When “DECEL G SEN SET” Appears
on Self-diagnostic Results Display (AWD Model) ... 52
Inspection 14: CAN Communication Circuit ........ ... 53
Component Inspection ......................................... ... 53
VDC OFF SWITCH .......................................... ... 53
Symptom 1: Excessive ABS Function Operation