Nissan Pathfinder: Vdc/tcs/abs - Precautions ++

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

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 collisions.

Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” sections of this Service Manual.

WARNING:

Always observe the following items for preventing accidental activation:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision that would result in air bag inflation, it is recommended that all maintenance and repair be performed by an authorized NISSAN/INFINITI dealer.

• Improper repair, 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 “SRS AIR BAG”.

• Never 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 harness connectors.

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

WARNING:

Always observe the following items for preventing accidental activation:

• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition/power switch ON or engine running, never 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/power switch OFF, disconnect the 12V battery or batteries, and wait at least 3 minutes before performing any service.

Precaution for Procedure without Cowl Top Cover

When performing the procedure after removing cowl top cover, cover the lower end of windshield with urethane, etc. to prevent damage to windshield.

Precaution for Brake System

WARNING:

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

• Use the correct brake fluid. Refer to Fluids and Lubricants (FOR MEXICO) or to Fluids and Lubricants (FOR USA AND CANADA).

• 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 clean with new brake fluid when cleaning the master cylinder, brake caliper, and other components.

• 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 using a flare nut wrench.

• Tighten the brake tube flare nut to the specified torque using a flare nut crowfoot (A) and torque wrench (B).

  

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

• Always connect the battery terminal when moving the Nissan Pathfinder vehicle.

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

• Check for bends, cracks, and damage to the brake pedal. Adjust the brake pedal if it is outside the standard value.

Precaution for Brake Control System

• Always perform a pre-driving check to drive the vehicle.

• Always check speed and safety while driving the Nissan Pathfinder vehicle.

• To operate CONSULT while driving, more than one person is required to be in the vehicle to avoid interference to driving and ensure safety.

• Slight vibrations are felt on the brake pedal and the operation noises occur when VDC function, TCS function, ABS function, EBD function, brake limited slip differential (BLSD) function, brake assist function, brake force distribution function, hill start assist function, or electric parking brake function operates. This is not a malfunction because it is caused by VDC function, TCS function, ABS function, EBD function, brake limited slip differential (BLSD) function, brake assist function, brake force distribution function, hill start assist function, or electric parking brake function that is normally operated.

• When starting engine or when starting Nissan Pathfinder vehicle just after starting engine, brake pedal may vibrate or motor operating noise may be heard from engine compartment. This is normal condition.

• Brake stopping distance for this model may become longer than for models without ABS function depending on the road conditions, like when ABS function is operated on slippery road, rough road, gravel road, or snowy road.

• When a malfunction is indicated, always collect information from the customer about conditions of occurrence, estimate cause, and perform operation. Check brake booster operation, brake fluid level, and brake fluid leakage, as well as electrical system.

• The optimum performance is achieved by control for VDC function, TCS function, ABS function, EBD function, brake limited slip differential (BLSD) function, brake assist function, brake force distribution function, hill start assist function, and electric parking brake function when all of brakes, suspension parts, and tires installed on the Nissan Pathfinder vehicle are the specified size and parts. Brake performance and controllability may be negatively affected when other parts than the specified are installed.

• Brake stopping distance may become longer and steering stability may be negatively affected when tires in different size and combination or other parts than the specified are used.

• When a radio (including wiring), antenna, and antenna lead line are located near ABS actuator and electric unit (control unit), a malfunction or improper operation may occur for the control of VDC function, TCS function, ABS function, EBD function, brake limited slip differential (BLSD) function, brake assist function, brake force distribution function, hill start assist function, and electric parking brake function.

• When the following items are replaced by other parts than genuine parts or modified, ABS warning lamp, brake warning lamp, and VDC warning lamp may turn ON, and the control may not operate normally for VDC function, TCS function, ABS function, EBD function, brake limited slip differential (BLSD) function, brake assist function, brake force distribution function, hill start assist function, and electric parking brake function:

  • Suspension component parts (shock absorber, spring, bushing, and others)

  • Tire and wheel (other than the specified size)

  • Brake component parts (brake pad, disc rotor, brake caliper, and others)

  • Engine component parts (ECM, muffler, and others)

  • Body reinforcement component parts (rollover bar, tower bar, and others)

• When suspension, tire, and brake related parts are excessively worn or deteriorated and the Nissan Pathfinder vehicle is driven, ABS warning lamp, brake warning lamp, and VDC warning lamp may turn ON, and the control may not operate normally for VDC function, TCS function, ABS function, EBD function, brake limited slip differential (BLSD) function, brake assist function, brake force distribution function, hill start assist function, and electric parking brake function.

• ABS warning lamp, brake warning lamp, and VDC warning lamp may turn ON, when only front wheel or rear wheel is rotated using a free roller. This is not a malfunction because it is caused by wheel speed difference between wheel that is rotated and wheel that is not rotated. In this case, perform self-diagnosis, check self-diagnosis results, and erase memory.

• When power supply voltage is not normal, ABS warning lamp, brake warning lamp, and VDC warning lamp turn ON. ABS actuator and electric unit (control unit) stops control for VDC function, TCS function, ABS function, EBD function, brake limited slip differential (BLSD) function, brake assist function, brake force distribution function, hill start assist function, and electric parking brake function. Ordinary brake operates. After power supply returns to normal, ABS warning lamp, brake warning lamp, and VDC warning lamp turn OFF. The control becomes operative for VDC function, TCS function, ABS function, EBD function, brake limited slip differential (BLSD) function, brake assist function, brake force distribution function, hill start assist function, and electric parking brake function.

• Brake pedal vibrates and operation sound occurs during sudden acceleration and cornering, when VDC function, TCS function, brake limited slip differential (BLSD) function, brake assist function, brake force distribution function, hill start assist function, and electric parking brake function. This is not a malfunction because it is caused by VDC function, TCS function, brake limited slip differential (BLSD) function, brake assist function, brake force distribution function, hill start assist function, and electric parking brake function that is operated normally.

• VDC warning lamp may turn ON and VDC function, TCS function, brake limited slip differential (BLSD) function, brake assist function, brake force distribution function, hill start assist function, and electric parking brake function may not normally operate when driving on a special road that is extremely slanted (bank in a circuit course). This is not a malfunction if the status returns to normal for VDC function, TCS function, brake limited slip differential (BLSD) function, brake assist function, brake force distribution function, hill start assist function, and electric parking brake function after the engine is started again. In this case, perform self-diagnosis, check self-diagnosis results, and erase memory.

• A malfunction in yaw rate/side/decel G sensor system may be detected when the Nissan Pathfinder vehicle sharply turns during a spin turn, acceleration turn, or drift driving while VDC function and TCS function are OFF (VDC OFF indicator lamp is in ON status). This is not a malfunction if the status returns to normal for VDC function and TCS function after the engine is started again. In this case, perform self-diagnosis, check self-diagnosis results, and erase memory.

Precaution for Harness Repair

• Solder the repaired area and wrap tape around the soldered area.

  

  NOTE:

  A fray of twisted lines must be within 110 mm (4.33 in).

   

• Bypass connection is never allowed at the repaired area.

  

  NOTE:

  Bypass connection may cause CAN communication error. The spliced wire becomes separated and the characteristics of twisted line are lost.

   

• Replace the applicable harness as an assembly if error is detected on the shield lines of CAN communication line.

Precautions for Work

• When removing or disassembling each component, be careful not to damage or deform it. If a component may be subject to interference, be sure to protect it with a shop cloth.

• When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component with a shop cloth or vinyl tape to protect it.

• Protect the removed parts with a shop cloth and prevent them from being dropped.

• Replace a deformed or damaged clip.

• If a part is specified as a non-reusable part, always replace it with a new one.

• Be sure to tighten bolts and nuts securely to the specified torque.

• After installation is complete, be sure to check that each part works properly.

• Follow the steps below to clean components:

  • Water soluble dirt:

    1. Dip a soft cloth into lukewarm water, wring the water out of the cloth and wipe the dirty area.

    2. Then rub with a soft, dry cloth.

  • Oily dirt:

    1. Dip a soft cloth into lukewarm water with mild detergent (concentration: within 2 to 3%) and wipe the dirty area.

    2. Then dip a cloth into fresh water, wring the water out of the cloth and wipe the detergent off.

    3. Then rub with a soft, dry cloth.

  • Do not use organic solvent such as thinner, benzene, alcohol or gasoline.

  • For genuine leather seats, use a genuine leather seat cleaner.

Rear Brake Caliper Assembly ++Steering System