2007 INFINITI M35 component

BR-30
REAR DISC BRAKE
Revision: 2007 April2007 M35/M45
Removal and Installation of Brake Caliper AssemblyNFS000SK
REMOVAL
1. Remove tires from vehicle with power tool.
2. Fasten disc rotor using wheel nut.
3. Drain brake fluid. Refer to BR-9, "
Drain and Refill" .
4. Remove union bolt and then disconnect brake hose from caliper
assembly.
5. Remove torque member mounting, bolts, and remove brake cal-
iper assembly.
CAUTION:
Do not drop brake pad.
6. Remove disc rotor.
CAUTION:
Put matching marks on wheel hub assembly and disc rotor,
if it necessary to remove disc rotor.
INSTALLATION
CAUTION:

Refill with new brake fluid “DOT 3”.

Never reuse drained brake fluid.
1. Install disc rotor.
CAUTION:
Alignment marks of disc rotor and wheel hub put at the time of removal when reusing disc rotor.
2. Install brake caliper assembly vehicle, and tighten torque member mounting bolts to the specified torque.
Refer to BR-28, "
Components" .
CAUTION:
Before installing caliper assembly, wipe off oil and moisture on all mounting surfaces of rear axle
and caliper assembly and threads, bolts and washers.
3. Install L-shaped pin of brake hose and then tighten union bolt to
the specified torque. Refer to BR-12, "
Removal and Installation
of Rear Brake Tube and Brake Hose" .
4. Refill with new brake fluid and bleed air. Refer to BR-10, "
Bleed-
ing Brake System" .
5. Check rear disc brake for drag.
6. Install tires to vehicle.
SFIA2972E
SDIA2638E
SFIA2049E

BRC-1
BRAKE CONTROL SYSTEM
F BRAKES
CONTENTS
C
D
E
G
H
I
J
K
L
M
SECTION BRC
A
B
BRC
Revision: 2007 April2007 M35/M45
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 Procedures without Cowl Top Cover ..... 3
Precautions for Brake System .................................. 3
Precautions for Brake Control .................................. 4
PREPARATION ........................................................... 5
Special Service Tools ............................................... 5
Commercial Service Tools ........................................ 5
ON-VEHICLE SERVICE ............................................. 6
Adjustment of Steering Angle Sensor Neutral Posi-
tion ........................................................................... 6
SYSTEM DESCRIPTION ............................................ 7
System Diagram ....................................................... 7
Functions .................................................................. 7
ABS ....................................................................... 7
EBD ....................................................................... 7
TCS ....................................................................... 8
VDC ....................................................................... 8
ECD ....................................................................... 8
Operation That Is Not "System Error" ...................... 8
ABS ....................................................................... 8
TCS ....................................................................... 8
VDC ....................................................................... 8
Hydraulic Circuit Diagram ........................................ 9
CAN Communication ................................................ 9
SYSTEM DESCRIPTION ...................................... 9
TROUBLE DIAGNOSIS ............................................ 10
Fail-Safe Function .................................................. 10
ABS, EBD SYSTEM ............................................ 10
VDC/TCS ............................................................ 10
How to Perform Trouble Diagnoses ....................... 10
BASIC CONCEPT ............................................... 10
DIAGNOSIS FLOW CHART ................................ 11
ASKING COMPLAINTS ...................................... 12
EXAMPLE OF DIAGNOSIS WORKSHEET ........ 12
Component Parts Location ..................................... 13
Schematic .............................................................. 14Wiring Diagram — VDC — ..................................... 15
Control Unit Input/Output Signal Standard ............. 21
REFERENCE VALUE FROM CONSULT-II ......... 21
CONSULT-II Functions (ABS) ................................ 23
CONSULT-II MAIN FUNCTION ........................... 23
CONSULT-II SETTING PROCEDURE ................ 23
Self-Diagnosis ........................................................ 24
OPERATION PROCEDURE ................................ 24
ERASE MEMORY ............................................... 24
DISPLAY ITEM LIST ........................................... 25
Data Monitor ........................................................... 28
OPERATION PROCEDURE ................................ 28
DISPLAY ITEM LIST ........................................... 28
Active Test .............................................................. 30
OPERATION PROCEDURE ................................ 30
TEST ITEMS ....................................................... 31
For Fast and Accurate Diagnosis ........................... 32
PRECAUTIONS FOR DIAGNOSIS ..................... 32
Basic Inspection ..................................................... 33
BASIC INSPECTION 1: BRAKE FLUID LEVEL,
LEAK INSPECTION AND BRAKE PAD .............. 33
BASIC INSPECTION 2: LOOSENESS OF
POWER SYSTEM TERMINALS AND BATTERY ... 33
BASIC INSPECTION 3: ABS WARNING LAMP,
BRAKE WARNING LAMP, VDC OFF INDICATOR
LAMP AND SLIP INDICATOR LAMP .................. 33
TROUBLE DIAGNOSIS FOR SYSTEM .................... 34
Wheel Sensor Circuit .............................................. 34
INSPECTION PROCEDURE .............................. 34
Engine System ....................................................... 36
INSPECTION PROCEDURE .............................. 36
ABS Actuator and Electric Unit (Control Unit) ........ 36
INSPECTION PROCEDURE .............................. 36
ABS Actuator and Electric Unit (Control Unit) Power
Supply and Ground Circuit ..................................... 37
INSPECTION PROCEDURE .............................. 37
ABS Motor and Motor Relay Circuit ........................ 38
INSPECTION PROCEDURE .............................. 38
Solenoid, VDC Change-Over Valve and Actuator
Relay Circuit ........................................................... 39

BRC-2Revision: 2007 April2007 M35/M45 INSPECTION PROCEDURE ............................... 39
Pressure Sensor Circuit .......................................... 40
INSPECTION PROCEDURE ............................... 40
Steering Angle Sensor Circuit ................................. 41
INSPECTION PROCEDURE ............................... 41
Stop Lamp Switch Circuit ........................................ 43
INSPECTION PROCEDURE ............................... 43
Yaw Rate/Side G Sensor Circuit ............................. 44
INSPECTION PROCEDURE ............................... 44
Brake Fluid Level Switch Circuit ............................. 46
INSPECTION PROCEDURE ............................... 46
RAS Control Unit Circuit (With RAS) ...................... 47
INSPECTION PROCEDURE ............................... 47
ICC Sensor Integrated Unit Circuit (With ICC) ........ 48
INSPECTION PROCEDURE ............................... 48
CAN Communication Circuit ................................... 48
INSPECTION PROCEDURE ............................... 48
VDC OFF Switch Circuit ......................................... 49
INSPECTION PROCEDURE ............................... 49
Parking Brake Switch Circuit .................................. 50
INSPECTION PROCEDURE ............................... 50
Warning Lamp and Indicator Lamp Circuit ............. 50
INSPECTION PROCEDURE ............................... 50
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 51
Excessive ABS Function Operation Frequency ...... 51
Unexpected Pedal Reaction ................................... 51The Braking Distance Is Long ................................. 52
ABS Function Does Not Operate ............................ 52
Pedal Vibration or ABS Operation Sound Occurs ... 52
Vehicle Jerks During VDC/TCS/ABS Control .......... 53
WHEEL SENSOR ...................................................... 54
Removal and Installation ......................................... 54
COMPONENT ...................................................... 54
REMOVAL ............................................................ 54
INSTALLATION .................................................... 54
SENSOR ROTOR ...................................................... 56
Removal and Installation ......................................... 56
REMOVAL ............................................................ 56
INSTALLATION .................................................... 56
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ... 57
Removal and Installation ......................................... 57
COMPONENT ...................................................... 57
REMOVAL ............................................................ 57
INSTALLATION .................................................... 58
G-SENSOR ................................................................ 59
Removal and Installation ......................................... 59
REMOVAL ............................................................ 59
INSTALLATION .................................................... 59
STEERING ANGLE SENSOR ................................... 60
Removal and Installation ......................................... 60
REMOVAL ............................................................ 60
INSTALLATION .................................................... 60

BRC-6
[VDC/TCS/ABS]
ON-VEHICLE SERVICE
Revision: 2007 April2007 M35/M45
ON-VEHICLE SERVICEPFP:00000
Adjustment of Steering Angle Sensor Neutral PositionNFS000Q4
In case of doing work that applies to the list below, make sure to adjust neutral position of steering angle sen-
sor before running vehicle.
×: Required
–: Not required
CAUTION:
To adjust neutral position of steering angle sensor, make sure to use CONSULT-II.
(Adjustment cannot be done without CONSULT-II.)
1. Stop vehicle with front wheels in straight-ahead position.
2. Perform “CONSULT-II Starting Procedure”. Refer to GI-38, "
CONSULT-II Start Procedure" .
3. Turn ignition switch ON and touch the CONSULT-II screen in the order of “ABS”, “WORK SUPPORT” and
“ST ANG SEN ADJUSTMENT”.
4. Touch “START”.
CAUTION:
Do not touch steering wheel while adjusting steering angle
sensor.
5. After approximately 10 seconds, touch “END”. (After approxi-
mately 60 seconds, it ends automatically.)
6. Turn ignition switch OFF, then turn it ON again.
CAUTION:
Be sure to perform above operation.
7. Run vehicle with front wheels in straight-ahead position, then
stop.
8. Select “DATA MONITOR”, “ECU INPUT SIGNALS”, and “STR ANGLE SIG” on CONSULT-II screen. Then
make sure “STR ANGLE SIG” is within 0±2.5°. If value is more than specification, repeat steps 1 to 7.
9. Erase memory of ABS actuator and electric unit (control unit) and ECM. ABS actuator and electric unit
(control unit): Refer to BRC-24, "
ERASE MEMORY" . ECM: Refer to EC-90, "TROUBLE DIAGNOSIS"
(VQ35DE), EC-792, "TROUBLE DIAGNOSIS" (VK45DE).
10. Turn ignition switch OFF.
Situation Adjustment of Steering Angle Sensor Neutral Position
Removing/Installing ABS actuator and electric unit (control unit)−
Replacing ABS actuator and electric unit (control unit)×
Removing/Installing steering angle sensor×
Removing/Installing steering components×
Removing/Installing suspension components×
Change tires to new ones–
Tire rotation–
Adjusting wheel alignment×
SFIA0793E

TROUBLE DIAGNOSIS
BRC-13
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2007 April2007 M35/M45
Component Parts LocationNFS000QC
1. Front wheel sensor 2. ABS actuator and electric unit (con-
trol unit)3. Warning lamp, Indicator lamp
(Combination meter)
4. VDC OFF switch 5. Steering angle sensor 6. Rear wheel sensor
7. Yaw rate/side G sensor
SFIA3017E

BRC-26
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
C1120 FR LH IN ABS SOLWhen the control unit detects a malfunction in the front left inlet sole-
noid circuit.
BRC-39, "
Sole-
noid, VDC
Change-Over
Valve and Actua-
tor Relay Circuit"
C1121 FR LH OUT ABS SOLWhen the control unit detects a malfunction in the front left outlet sole-
noid circuit.
C1122 FR RH IN ABS SOLWhen the control unit detects a malfunction in the front right inlet sole-
noid circuit.
C1123 FR RH OUT ABS SOLWhen the control unit detects a malfunction in the front right outlet sole-
noid circuit.
C1124 RR LH IN ABS SOLWhen the control unit detects a malfunction in the rear left inlet solenoid
circuit.
C1125 RR LH OUT ABS SOLWhen the control unit detects a malfunction in the rear left outlet sole-
noid circuit.
C1126 RR RH IN ABS SOLWhen the control unit detects a malfunction in the rear right inlet sole-
noid circuit.
C1127 RR RH OUT ABS SOLWhen the control unit detects a malfunction in the rear right outlet sole-
noid circuit.
C1130 ENGINE SIGNAL 1
Major engine components are malfunctioning.BRC-36, "
Engine
System"
C1131 ENGINE SIGNAL 2
C1132 ENGINE SIGNAL 3
C1133 ENGINE SIGNAL 4
C1136 ENGINE SIGNAL 6
C1137 RAS CIRCUIT When RAS control unit is malfunctioning.BRC-47, "
RAS
Control Unit Cir-
cuit (With RAS)"
C1142 PRESS SEN CIRCUIT Pressure sensor signal line is open or shorted, or pressure sensor is
malfunctioning.BRC-40, "
Pres-
sure Sensor Cir-
cuit"
C1143 ST ANG SEN CIRCUIT Neutral position of steering angle sensor is dislocated, or the steering
angle sensor is malfunctioning.BRC-41, "
St e e r -
ing Angle Sensor
Circuit"
C1144 ST ANG SEN SIGNAL Neutral position correction of steering angle sensor is not finished.BRC-6, "
Adjust-
ment of Steering
Angle Sensor
Neutral Position"
C1145 YAW RATE SENSOR Yaw rate sensor is malfunctioning, or the yaw rate sensor signal line is
open or shorted.BRC-44, "Ya w
Rate/Side G
Sensor Circuit"C1146 SIDE G-SEN CIRCUITSide G sensor is malfunctioning, or circuit of side G sensor is open or
shorted.
C1147 USV LINE [FL-RR]VDC switch-over solenoid valve (USV1) on the primary side is open cir-
cuit or shorted, or the control line is open or shorted to the power supply
or the ground.
BRC-39, "
Sole-
noid, VDC
Change-Over
Valve and Actua-
tor Relay Circuit"
C1148 USV LINE [FR-RL]VDC switch-over solenoid valve (USV2) on the secondary side is open
circuit or shorted, or the control line is open or shorted to the power
supply or the ground.
C1149 HSV LINE [FL-RR]VDC switch-over solenoid valve (HSV1) on the primary side is open cir-
cuit or shorted, or the control line is open or shorted to the power supply
or the ground.
C1150 HSV LINE [FR-RL]VDC switch-over solenoid valve (HSV2) on the secondary side is open
circuit or shorted, or the control line is open or shorted to the power
supply or the ground.
C1153 EMERGENCY BRAKEWhen ABS actuator and electric unit (control unit) is malfunctioning.
(Pressure increase is too much or too little)BRC-36, "
ABS
Actuator and
Electric Unit
(Control Unit)"
Code Display item Malfunction detecting condition Check item

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-35
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2007 April2007 M35/M45
5. CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF and disconnect malfunctioning wheel
sensor connector E41(FR-RH), E59(FR-LH), B466(RR-RH),
B467(RR-LH) and ABS actuator and electric unit (control unit)
connector E30.
2. Check continuity between terminals. (Also check continuity
when steering wheel is turned right and left and when sensor
harness inside the wheel house is moved.)
OK or NG
OK >> GO TO 6.
NG >>

Repair or replace malfunctioning components.

Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.
6. CHECK WHEEL SENSOR POWER SUPPLY CIRCUIT
1. Disconnect malfunctioning wheel sensor connector.
2. Turn ignition switch ON and check voltage between wheel sen-
sor harness connector power supply terminal and ground.
OK or NG
OK >> Replace wheel sensor.
NG >> Replace ABS actuator and electric unit (control unit).
SFIA3030E
Power supply circuit Signal circuit Ground circuit
WheelABS actuator
and electric unit
(control unit)Wheel sensorABS actuator
and electric unit
(control unit)Wheel sensorABS actuator
and electric unit
(control unit)
(signal)Ground
Front RH 9 1 10 2 9, 10
— Front LH 26 1 5 2 26, 5
Rear RH 7 1 29 2 7, 29
Rear LH 6 1 27 2 6, 27
Power supply circuit : Continuity should exist.
Signal circuit : Continuity should exist.
Ground circuit : Continuity should not exist.
Wheel Wheel sensor Ground Voltage
Front RH
1—8 V or more Front LH
Rear RH
Rear LH
SFIA3341E

BRC-36
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2007 April2007 M35/M45
Engine SystemNFS000QM
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK ENGINE SYSTEM
1. Perform ECM self-diagnosis. Repair or replace items indicated, then perform ECM self-diagnosis again.
Refer to EC-90, "
TROUBLE DIAGNOSIS" (VQ35DE), EC-792, "TROUBLE DIAGNOSIS" (VK45DE).
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
OK or NG
OK >> INSPECTION END
NG >>

Repair or replace malfunctioning components.

Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.
ABS Actuator and Electric Unit (Control Unit)NFS000QN
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
CAUTION:
Replace ABS actuator and electric unit (control unit) when self-diagnostic result shows items other
than those above.
Is above displayed on the self-diagnosis display?
YES >>
Replace ABS actuator and electric unit (control unit).

Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.
NO >> INSPECTION END
Self-diagnosis results
ENGINE SIGNAL 1
ENGINE SIGNAL 2
ENGINE SIGNAL 3
ENGINE SIGNAL 4
ENGINE SIGNAL 6
Self-diagnosis results
CONTROLLER FAILURE
EMERGENCY BRAKE
VARIANT CODING