Nissan Pathfinder. Manual — part 236

BRC-3

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ABS WARNING LAMP . . . . . . . . . .

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Component Function Check . . . . . . . . ..

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Diagnosis Procedure . . . . . . . . . . . .

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BRAKE WARNING LAMP . . . . . . . ...

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Component Function Check . . . . . . . . ..

107

Diagnosis Procedure . . . . . . . . . . . .

107

VDC OFF INDICATOR LAMP . . . . . . ..

108

Component Function Check . . . . . . . . ..

108

Diagnosis Procedure . . . . . . . . . . . .

108

SLIP INDICATOR LAMP . . . . . . . . ..

109

Component Function Check . . . . . . . . ..

109

Diagnosis Procedure . . . . . . . . . . . .

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SYMPTOM DIAGNOSIS . . . . . . .

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VDC/TCS/ABS . . . . . . . . . . . . ..

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Symptom Table . . . . . . . . . . . . . .

110

EXCESSIVE OPERATION FREQUENCY . .

111

Description . . . . . . . . . . . . . . .

111

Diagnosis Procedure . . . . . . . . . . . .

111

UNEXPECTED BRAKE PEDAL REACTION ...

112

Description . . . . . . . . . . . . . . .

112

Diagnosis Procedure . . . . . . . . . . . .

112

THE BRAKING DISTANCE IS LONG . . . ..

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Description . . . . . . . . . . . . . . .

113

Diagnosis Procedure . . . . . . . . . . . .

113

ABS FUNCTION DOES NOT OPERATE . . .

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Description . . . . . . . . . . . . . . .

114

Diagnosis Procedure . . . . . . . . . . . .

114

BRAKE PEDAL VIBRATION OR OPERA-
TION SOUND OCCURS . . . . . . . . ..

115

Description . . . . . . . . . . . . . . . .

115

Diagnosis Procedure . . . . . . . . . . . .

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VEHICLE JERKS DURING VDC/TCS/ABS
CONTROL . . . . . . . . . . . . . ...

116

Description . . . . . . . . . . . . . . . .

116

Diagnosis Procedure . . . . . . . . . . . .

116

NORMAL OPERATING CONDITION . . . .

117

Description . . . . . . . . . . . . . . . .

117

UNIT REMOVAL AND INSTALLATION .

118

WHEEL SENSOR . . . . . . . . . . .

118

Exploded View - Front Wheel Sensor . . . . .

118

Removal and Installation - Front Wheel Sensor .

118

Exploded View - Rear Wheel Sensor . . . . .

119

Removal and Installation - Rear Wheel Sensor . .

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SENSOR ROTOR . . . . . . . . . . .

122

Removal and Installation - Front Sensor Rotor . .

122

Removal and Installation - Rear Sensor Rotor . ..

122

ABS ACTUATOR AND ELECTRIC UNIT
(CONTROL UNIT) . . . . . . . . . . ...

123

Exploded View . . . . . . . . . . . . . ...

123

Removal and Installation . . . . . . . . . ...

123

YAW RATE/SIDE/DECEL G SENSOR . . ...

125

Exploded View . . . . . . . . . . . . . ...

125

Removal and Installation . . . . . . . . . ...

125

STEERING ANGLE SENSOR . . . . . . .

126

Removal and Installation . . . . . . . . . ...

126

BRC-4

< PRECAUTION >

[VDC/TCS/ABS]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

INFOID:0000000009729281

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along

with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain

types of collision. Information necessary to service the system safely is included in the SR and SB section of

this Service Manual.

WARNING:

• To avoid rendering the SRS inoperative, 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 NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag

Module, see the SR section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-

ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-

tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a

hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing

serious injury.

• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the

battery and wait at least three minutes before performing any service.

Precaution for Brake System

INFOID:0000000009177228

WARNING:

Clean any dust from the front brake and rear brake using a vacuum dust collector. Do not blow by

compressed air.

• Brake fluid use refer to

MA-15, "FOR USA AND CANADA : Fluids and Lubricants"

(United States and Can-

ada) or

MA-16, "FOR MEXICO : Fluids and Lubricants"

(Mexico).

• Do not reuse drained brake fluid.

• Do not spill or splash brake fluid on painted surfaces. Brake fluid may seriously damage paint. Wipe it off

immediately and wash with water if it gets on a painted surface.

• Always confirm the specified tightening torque when installing the brake pipes.

• After pressing the brake pedal more deeply or harder than normal driving, such as air bleeding, check each

item of brake pedal. Adjust brake pedal if it is outside the standard value.

• Do not use mineral oils such as gasoline or light oil to clean. They may damage rubber parts and cause

improper operation.

• Always loosen the brake tube flare nut with a flare nut wrench.

• Tighten the brake tube flare nut to the specified torque with a crow-

foot (A) and torque wrench (B).

• Always connect the battery terminal when moving the vehicle.

• Turn the ignition switch OFF and disconnect the ABS actuator and

electric unit (control unit) harness connector or the battery negative

terminal before performing the work.

• Check that no brake fluid leakage is present after replacing the

parts.

JPFIA0001ZZ

PRECAUTIONS

BRC-5

< PRECAUTION >

[VDC/TCS/ABS]

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Precaution for Brake Control System

INFOID:0000000009177229

• Just after starting vehicle after ignition switch is ON, brake pedal may vibrate or motor operating noise may

be heard from engine compartment. This is a normal condition.

• When an error is indicated by ABS or another warning lamp, collect all necessary information from customer

(what symptoms are present under what conditions) and check for simple causes before starting diagnostic

servicing. Besides electrical system inspection, check brake booster operation, brake fluid level and oil

leaks.

• If tire size and type are used in an improper combination or brake pads are not Genuine NISSAN parts, stop-

ping distance or steering stability may deteriorate.

• ABS might be out of order or malfunctions by putting a radio (wiring inclusive), an antenna and a lead-in wire

near the control unit.

• If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness

pinches, open circuits, and improper wiring.

• VDC system may not operate normally or a VDC OFF indicator lamp or SLIP indicator lamp may light.

- When replacing the following parts with parts other than genuine parts or making modifications: Suspension-

related parts (shock absorber, spring, bushing, etc.), tires, wheels (other than specified sizes), brake-related

parts (pad, rotor, caliper, etc.), engine-related parts (muffler, ECM, etc.) and body reinforcement-related parts

(roll bar, tower bar, etc.).

- When driving with worn or deteriorated suspension, tires and brake-related parts.

Precaution for Harness Repair

INFOID:0000000009177230

• Solder the repair part, and wrap it with tape. [Twisted wire fray

must be 110 mm (4.33 in) or less.]

• Do not bypass the repair point with wire. (If it is bypassed, the turn-

out point cannot be separated and the twisted wire characteristics

are lost.)

SKIB8766E

SKIB8767E

BRC-6

< PREPARATION >

[VDC/TCS/ABS]

PREPARATION

PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000009177231

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tools

INFOID:0000000009177232

Tool number
(Kent-Moore No.)
Tool name

Description

KV991J0080
(J-45741)
ABS active wheel sensor tester

Checking operation of ABS active wheel sen-
sors

WFIA0101E

Tool name

Description

1. Flare nut crowfoot
2. Torque wrench

Removing and installing brake piping
a: 10 mm (0.39 in)/12 mm (0.47 in)

Power tool

Loosening nuts, screws and bolts

S-NT360

PIIB1407E