2008 INFINITI FX35 ABS

BR-2
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001612918
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SUPPLEMENTAL RESTRAINT SYS-
TEM” and “SEAT BELTS” of this Service Manual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISS AN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the “SUPPLEMEN TAL RESTRAINT SYSTEM”.
 Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
Precaution for Procedure without Cowl Top CoverINFOID:0000000001612920
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precaution for Brake SystemINFOID:0000000001327604
 Clean dust on front brake and rear brake with a vacuum dust collector. Do not blow with compressed air.
 Recommended fluid is brake fluid “DOT 3”. MA-9, "
Fluids and Lubricants".
 Do not reuse drained brake fluid.
 Be careful not to splash brake fluid on painted areas.
 To clean or wash all parts of master cylinder, disc brake caliper and wheel cylinder, use new brake fluid.
 Do not use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.
 Use a flare nut crowfoot and torque wrench when installing brake
tube.
 When installing brake piping, be sure to check torque.
 Before working, turn ignition switch OFF and disconnect connec- tors for ABS actuator and electric unit (control unit) or battery neg-
ative terminal.
 Burnish the brake contact surfaces after refinishing or replacing drums or rotors, after replacing pads or linings, or if a soft pedal
occurs at very low mileage.
Refer to BR-23, "
Brake Burnishing Procedure" (Front disc brake),
BR-29, "
Brake Burnishing Procedure" (Rear disc brake).
WARNING:
 Clean brake pads and shoes with a waste cl oth, then clean with a dust collector.
PIIB3706J
SBR686C
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BR-8
< SERVICE INFORMATION >
BRAKE FLUID
BRAKE FLUID
On-Board InspectionINFOID:0000000001327610
LEVEL CHECK
 Make sure the fluid level in reservoir tank is within the standard(between MAX and MIN lines).
 Visually check around reservoir tank for fluid leakage.
 If fluid level is excessively low, check brake system for leakage.
 Release parking brake pedal and see if brake warning lamp goes off. If not, check brake system for fluid leakage.
Drain and RefillINFOID:0000000001327611
CAUTION:
 Refill with new brake fluid “DOT3”.
 Do not reuse drained brake fluid.
 Be careful not to splash brake fluid on painted areas; it way cause paint damage. If brake fluid is
splashed on painted surfaces of bo dy, immediately wipe it off and them wash it away with water
immediately.
 Before working, disconnect connectors of ABS actua tor and electric unit (control unit) or battery
negative terminal.
1. Connect a vinyl tube to each bleed valve.
2. Depress brake pedal, loosen each bleed valve, and gradually remove brake fluid.
3. Make sure there is no foreign material in reservoir tank, and refill with new brake fluid.
4. Rest foot on brake pedal. Loosen bleed valve. Slowly depress pedal until it stops. Tighten bl eed valve. Release brake pedal.
Repeat this process a few times, then pause to add new brake
fluid to master cylinder. Continue until new brake fluid flows out.
5. Bleed Air. Refer to BR-8, "
Bleeding Brake System".
Bleeding Brake SystemINFOID:0000000001327612
CAUTION:
SFIA1032E
BRA0007D
SBR995
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BRAKE FLUIDBR-9
< SERVICE INFORMATION >
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 Carefully monitor brake fluid level in reservoir tank during bleeding operation.
 Refill with new brake fluid “DOT 3”. Make sure it is at least half
way at all times while bleeding air out of system.
 Place a container under master cylinder not to spill brake fluid.
 Turn ignition switch OFF and disconnect ABS actuator and
electric unit (control unit) or battery negative terminal.
 Bleed air in the following order. Right rear brake → Left front
brake → Left rear brake → Right front brake
1. Connect a transparent vinyl tube to bleed valve.
2. Fully depress brake pedal several times.
3. With brake pedal depressed, open bleed valve to release air.
4. Close bleed valve.
5. Release brake pedal slowly.
6. Repeat steps 2, through 5, until clear brake fluid comes out of bleed valve.
SBR995
SBR419C
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BRAKE MASTER CYLINDERBR-13
< SERVICE INFORMATION >
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5. Remove master cylinder assembly mounting nut, re move master cylinder assembly from the vehicle.
Refer to BR-14, "
Removal and Installation".
INSTALLATION
CAUTION:
 Refill with new brake fluid “DOT3”.
 Do not reuse drained brake fluid.
1. Install in the reverse order of removal, and tight en mounting nuts to the specified torque. Refer to BR-14,
"Component".
2. Refill brake fluid and bleed air. Refer to BR-8, "
Bleeding Brake System".
Disassembly and AssemblyINFOID:0000000001327620
DISASSEMBLY
CAUTION:
 Master cylinder can not be disassembled.
 Remove reservoir tank only when absolutely necessary.
1. Remove pin (1).
2. Remove reservoir tank and grommet from master cylinder
assembly.
ASSEMBLY
CAUTION:
 Do not use mineral oil such as kerosene, g asoline 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.
Do not reuse pin.
2. Install reservoir tank onto master cylinder assembly.
3. Install pin (1).
PFIA0816E
PFIA0816E
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BRAKE BOOSTERBR-15
< SERVICE INFORMATION >
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CAUTION:
 Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted surfaces of body, immediately wipe it off and them wash it away with water
immediately.
 Be careful not to deform or bend brake tube while removing and installing brake booster.
 Replace clevis pin if it is damaged.
 Be careful not to damage brake booster stud bolt thr eads. If brake booster is tilted or inclined during
installation, dash panel may damage the threads.
 Install the check valve in the correct direction.
1. Remove vacuum hose from brake booster. Refer to BR-16
.
2. Remove brake master cylinder. Refer to BR-12, "
Removal and Installation".
3. Disconnect harness connector from brake booster assembly. (ICC model)
4. Remove snap pin and clevis pin from inside the vehicle. Refer to BR-6, "
Component".
5. Remove nuts from brake booster and brake pedal bracket.
6. Remove brake booster assembly from engine room.
INSPECTION AFTER REMOVAL
Output Rod Length Inspection
1. Using a handy vacuum pump, apply a vacuum of –66.7 kPa (– 500 mmHg, –19.69 inHg) to brake booster.
2. Check output rod length.
INSTALLATION
1. Loosen lock nut to adjust input r od length so that the length “B”
(shown in the figure) satisfies the specified value.
2. After adjusting “B”, temporarily tighten lock nut to install brake booster assembly to the vehicle. At this time, make sure to
install a gasket between brake booster assembly and the engine
room.
3. Connect brake pedal with clevis of input rod.
4. Install brake pedal bracket mounting nuts and bolt and tighten them to the specified torque. BR-6, "
Component".
5. Install brake tube from brake master cylinder to ABS actuator. Refer to BR-10, "
Hydraulic Circuit".
6. Install master cylinder to booster assembly. Refer to BR-12, "
Removal and Installation".
7. Adjust the height and play of brake pedal. BR-5, "
Inspection and Adjustment".
8. Tighten lock nut of input rod to the specified torque. Refer to BR-14, "
Component".
9. Bleed air. Refer to BR-8, "
Bleeding Brake System".
Standard dimension when
applying a vacuum of
− 66.7 kPa ( −500 mmHg, −19.69 inHg):
15.6 − 15.9 mm (0.614 − 0.626 in)
SFIA2146E
Length “B” : 126.5 mm (4.98 in)
SGIA0060E
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BRC-1
BRAKES
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SECTION BRC
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CONTENTS
BRAKE CONTROL SYSTEM
VDC/TCS/ABS
SERVICE INFORMATION .. ..........................
3
DTC INDEX ..................................................... .....3
C1101-C1116 ...................................................... ......3
C1120-C1136 ............................................................3
C1140-C1170 ............................................................3
U1000 ........................................................................4
PRECAUTIONS ...................................................5
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
5
Precaution for Brake System ....................................5
Precaution for Brake Control .....................................5
PREPARATION ...................................................7
Special Service Tool ........................................... ......7
Commercial Service Tool ..........................................7
ON-VEHICLE SERVICE ......................................8
Adjustment of Steering Angle Sensor Neutral Po-
sition .................................................................... ......
8
Calibration of Decel G Sensor (AWD Models) ..........8
SYSTEM DESCRIPTION ................................ ....10
Schematic ........................................................... ....10
Functions .................................................................10
Fail-Safe Function ...................................................11
Hydraulic Circuit Diagram .......................................12
CAN Communication ...............................................12
TROUBLE DIAGNOSIS .....................................13
Fail-Safe Function ............................................... ....13
How to Proceed with Diagnosis ..............................13
Component Part Location .......................................16
Schematic ...............................................................17
Wiring Diagram - VDC - ..........................................18
Control Unit Input/Output Signal Standard ..............23
CONSULT-III Functions (ABS) ................................26
Self-Diagnosis ..................................................... ....26
Data Monitor ........................................................ ....28
Active Test ...............................................................30
For Fast and Accurate Diagnosis ............................31
Basic Inspection ......................................................32
TROUBLE DIAGNOSIS FOR SYSTEM ............34
DTC C1101 RR RH SENSOR-1 ..............................34
DTC C1102 RR LH SENSOR-1 ..............................35
DTC C1103 FR RH SENSOR-1 ..............................35
DTC C1104 FR LH SENSOR-1 ...............................35
DTC C1105 RR RH SENSOR-2 ..............................36
DTC C1106 RR LH SENSOR-2 ..............................36
DTC C1107 FR RH SENSOR-2 ..............................36
DTC C1108 FR LH SENSOR-2 ...............................36
DTC C1109 BATTERY VOLTAGE [ABNORMAL] ....36
DTC C1110 CONTROLLER FAILURE ....................37
DTC C1111 PUMP MOTOR ....................................37
DTC C1113 G-SENSOR .........................................38
DTC C1115 ABS SENSOR [ABNORMAL SIG-
NAL] .........................................................................
39
DTC C1116 STOP LAMP SW .................................39
DTC C1120 FR LH IN ABS SOL .............................40
DTC C1121 FR LH OUT ABS SOL .........................41
DTC C1122 FR RH IN ABS SOL ......................... ....41
DTC C1123 FR RH OUT ABS SOL .........................42
DTC C1124 RR LH IN ABS SOL .............................42
DTC C1125 RR LH OUT ABS SOL ..................... ....42
DTC C1126 RR RH IN ABS SOL ............................42
DTC C1127 RR RH OUT ABS SOL ........................42
DTC C1130 ENGINE SIGNAL 1 .......................... ....42
DTC C1131 ENGINE SIGNAL 2 ..............................42
DTC C1132 ENGINE SIGNAL 3 ..............................42
DTC C1133 ENGINE SIGNAL 4 ..............................42
DTC C1136 ENGINE SIGNAL 6 ..............................42
DTC C1140 ACTUATOR RLY .................................43
DTC C1142 PRESS SEN CIRCUIT ........................43
DTC C1143 ST ANG SEN CIRCUIT ................... ....44
DTC C1144 ST ANG SEN SIGNAL .........................45
DTC C1145 YAW RATE SENSOR ..........................46
DTC C1146 SIDE G-SEN CIRCUIT ........................46
DTC C1155 BR FLUID LEVEL LOW .......................46
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BRC-2
DTC C1156 ST ANG SEN COM CIR .....................47
DTC C1160 DECEL G SEN SET ...........................47
DTC C1164 CV 1 ....................................................47
DTC C1165 CV 2 ....................................................47
DTC C1166 SV 1 ....................................................47
DTC C1167 SV 2 ....................................................47
DTC C1170 VARIANT CODING .............................48
DTC U1000 CAN COMM CIRCUIT ........................48
Component Inspection ............................................48
TROUBLE DIAGNOSIS FOR SYMPTOMS .......49
Excessive ABS Function Operation Frequency ......49
Unexpected Pedal Reaction ................................ ...49
The Braking Distance Is Long ................................49
The ABS Function Does Not Operate ....................50
Pedal Vibration or ABS O peration Sound Occurs ...50
Vehicle Jerks During VDC/TCS/ABS Control ...... ...50
WHEEL SENSORS ......................................... ...52
Removal and Installation ...................................... ...52
SENSOR ROTOR ..............................................53
Removal and Installation ...................................... ...53
ACTUATOR AND ELECTRIC UNIT (ASSEM-
BLY) ...................................................................
54
Removal and Installation ...................................... ...54
G SENSOR ........................................................55
Removal and Installation ...................................... ...55
STEERING ANGLE SENSOR ...........................56
Removal and Installation ...................................... ...56
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DTC INDEXBRC-3
< SERVICE INFORMATION > [VDC/TCS/ABS]
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SERVICE INFORMATION
DTC INDEX
C1101-C1116INFOID:0000000001559825
C1120-C1136INFOID:0000000001559826
C1140-C1170INFOID:0000000001559827
DTC Items (CONSULT sc reen items) Reference
C1101 RR RH SENSOR-1 BRC-34, "
DTC C1101 RR RH SENSOR-1"
C1102 RR LH SENSOR-1 BRC-35, "DTC C1102 RR LH SENSOR-1"
C1103 FR RH SENSOR-1BRC-35, "DTC C1103 FR RH SENSOR-1"
C1104 FR LH SENSOR-1 BRC-35, "DTC C1104 FR LH SENSOR-1"
C1105 RR RH SENSOR-2BRC-36, "DTC C1105 RR RH SENSOR-2"
C1106 RR LH SENSOR-2 BRC-36, "DTC C1106 RR LH SENSOR-2"
C1107 FR RH SENSOR-2BRC-36, "DTC C1107 FR RH SENSOR-2"
C1108 FR LH SENSOR-2 BRC-36, "DTC C1108 FR LH SENSOR-2"
C1109 BATTERY VOLTAGE [ABNORMAL]BRC-36, "DTC C1109 BATTERY VOLTAGE [ABNORMAL]"
C1110 CONTROLLER FAILURE BRC-37, "DTC C1110 CONTROLLER FAILURE"
C 1111 P U M P M O T O R BRC-37, "D T C C 1111 P U M P M O T O R"
C1113 G-SENSOR BRC-38, "DTC C1113 G-SENSOR"
C1115 ABS SENSOR [ABNORMAL SIGNAL]BRC-39, "DTC C1115 ABS SENSOR [ABNORMAL SIGNAL]"
C1116 STOP LAMP SW BRC-39, "DTC C1116 STOP LAMP SW"
DTC Items (CONSULT screen items) Reference
C1120 FR LH IN ABS SOL BRC-40, "
DTC C1120 FR LH IN ABS SOL"
C1121 FR LH OUT ABS SOLBRC-41, "DTC C1121 FR LH OUT ABS SOL"
C1122 FR RH IN ABS SOL BRC-41, "DTC C1122 FR RH IN ABS SOL"
C1123 FR RH OUT ABS SOLBRC-42, "DTC C1123 FR RH OUT ABS SOL"
C1124 RR LH IN ABS SOL BRC-42, "DTC C1124 RR LH IN ABS SOL"
C1125 RR LH OUT ABS SOLBRC-42, "DTC C1125 RR LH OUT ABS SOL"
C1126 RR RH IN ABS SOL BRC-42, "DTC C1126 RR RH IN ABS SOL"
C1127 RR RH OUT ABS SOLBRC-42, "DTC C1127 RR RH OUT ABS SOL"
C1130 ENGINE SIGNAL 1 BRC-42, "DTC C1130 ENGINE SIGNAL 1"
C1131 ENGINE SIGNAL 2BRC-42, "DTC C1131 ENGINE SIGNAL 2"
C1132 ENGINE SIGNAL 3BRC-42, "DTC C1132 ENGINE SIGNAL 3"
C1133 ENGINE SIGNAL 4BRC-42, "DTC C1133 ENGINE SIGNAL 4"
C1136 ENGINE SIGNAL 6BRC-42, "DTC C1136 ENGINE SIGNAL 6"
DTC Items (CONSULT screen items) Reference
C1140 ACTUATOR RLY BRC-43, "
DTC C1140 ACTUATOR RLY"
C1142 PRESS SEN CIRCUITBRC-43, "DTC C1142 PRESS SEN CIRCUIT"
C1143 ST ANG SEN CIRCUITBRC-44, "DTC C1143 ST ANG SEN CIRCUIT"
C1144 ST ANG SEN SIGNAL BRC-45, "DTC C1144 ST ANG SEN SIGNAL"
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