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 collision. Information necessary to service the system safely is included in the " SRS AIRBAG " and " SEAT BELTS SRS AIRBAG " articles of this Service Information.
| WARNING | Always observe the following items to prevent 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, 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 " SRS AIRBAG ". Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Information. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. The vehicle may be equipped with a passenger air bag deactivation switch which can be operated by the customer. When the passenger air bag is switched OFF, the passenger air bag is disabled and will not inflate. When the passenger air bag is switched ON, the passenger air bag is enabled and could inflate for certain types of collision. After SRS maintenance or repair, make sure the passenger air bag deactivation switch is in the same position (ON or OFF) as when the vehicle arrived for service. |
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 Ignition 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 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.
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| WARNING | Clean any dust from the front brake and rear brake with a vacuum dust collector. Do not blow with compressed air. |
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- Brake fluid use refer to " «RECOMMENDED FLUIDS AND LUBRICANTS»(ref-675584-S23480474382014120500000) ".
- 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, inspect the brake pedal height and play. Adjust brake pedal if it is outside the standard value.
- Always clean with new brake fluid when cleaning the 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 with a flare nut wrench.
- Tighten the brake tube flare nut to the specified torque with a crowfoot (A) and torque wrench (B).
- Brake system is an important safety part. If a brake fluid leak is detected, always disassemble the affected part. If a malfunction is detected, replace part with a new one.
- Always connect the battery terminals when moving the vehicle.
- Check that no brake fluid leakage is present after replacing the parts.
- Burnish the brake contact surfaces after refinishing or replacing disc brake rotors, after replacing brake pads, or if a soft pedal occurs at very low mileage. Front brake pad: Refer to " «BRAKE PAD: INSPECTION»(ref-675601-S19865963642014120500000) ". Front disc brake rotor: Refer to " «DISC ROTOR: INSPECTION»(ref-675601-S12714823892014120500000) ". Rear brake lining: refer to " «BRAKE LINING: INSPECTION»(ref-675601-S28658201432014120500000) ". Rear brake drum: " «BRAKE DRUM: INSPECTION»(ref-675601-S34453568882014120500000) ".
Special Service Tool
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number (Kent-Moore No.) Tool name Description - (J-46532) Brake height tool Measuring brake pedal height 38-PFM92-GYX/5 (-) On-car brake lathe Turning disc brake rotors
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Commercial Service Tool
Tool name Description Flare nut crowfoot Torque wrench Removing and installing brake pipe and hose flare nuts 10 mm (0.39 in)/12 mm (0.47 in) Vacuum pump Air tight Inspection of check valve Brake caliper wrench (front) Return the piston Power tool Loosening nuts, screws and bolts
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Brake Pedal Height
Check the height (H1) between the dash lower panel (1) and the brake pedal upper surface.
Brake pedal height: Refer to " BRAKE PEDAL ".
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| CAUTION | Remove the floor trim. |
Stop Lamp Switch
Check the clearance (C) between the brake pedal (1) and the stop lamp switch (2) threaded end.
Clearance: Refer to " BRAKE PEDAL ".
Scheme 46
| CAUTION | The stop lamp must turn off when the brake pedal is released. |
ASCD Cancel Switch (if equipped)
Check the clearance (C) between the brake pedal (1) and the ASCD cancel switch (2) threaded end.
Clearance: Refer to " BRAKE PEDAL ".
| CAUTION | The stop lamp must turn off when the brake pedal is released. |
Brake Pedal Play
Press the brake pedal. Check that brake pedal play does not exist.
Depressed Brake Pedal Height
Check the height between the dash lower panel (1) and the brake pedal upper surface (H2) when depressing the brake pedal at 490 N (50.0 kg-f, 110.2 lb-f) while turning engine ON.
Depressed brake pedal height: Refer to " BRAKE PEDAL ".
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| CAUTION | Remove the floor trim. |
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- Remove instrument lower panel LH. Refer to " «REMOVAL AND INSTALLATION»(ref-675607-S42805239232014120500000) ".
- Disconnect the harness connector from stop lamp switch.
- Loosen the stop lamp switch 45° counterclockwise.
- Adjust the brake pedal height with the following procedure. Loosen the input rod lock nut (1). CAUTION: The threaded end of the input rod (2) must project to the inner side (L) of the clevis (3). Rotate the input rod, adjust the brake pedal to the specified height (H1). Brake pedal height: Refer to " «BRAKE PEDAL»(ref-675601-S01416618242014120500000) ". Tighten the lock nut. Refer to " «EXPLODED VIEW»(ref-675601-S11266056412014120500000) ".
- Check the brake pedal play.
- Remove instrument lower panel LH. Refer to " «REMOVAL AND INSTALLATION»(ref-675607-S42805239232014120500000) ".
- Disconnect the harness connector from stop lamp switch.
- Loosen the stop lamp switch 45° counterclockwise.
- Press-fit the stop lamp switch (2) until the stop lamp switch hits the brake pedal (1) then tighten 45° clockwise while pulling the brake pedal pad slightly. CAUTION: The clearance (C) between the brake pedal and stop lamp switch threaded and must be the specified value. Clearance: Refer to " «BRAKE PEDAL»(ref-675601-S01416618242014120500000) ". The stop lamp must turn off when the brake pedal is released.
- Remove instrument lower panel LH. Refer to " «REMOVAL AND INSTALLATION»(ref-675607-S42805239232014120500000) ".
- Disconnect the harness connector from ASCD cancel switch.
- Loosen the ASCD cancel switch 45° counterclockwise.
- Press-fit the ASCD cancel switch (2) until the ASCD cancel switch hits the brake pedal (1) then tighten 45° clockwise while pulling the brake pedal pad slightly. CAUTION: The clearance (C) between the brake pedal and ASCD cancel switch threaded and must be the specified value. Clearance: Refer to " «BRAKE PEDAL»(ref-675601-S01416618242014120500000) ". The stop lamp must turn off when the brake pedal is released.
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- Check that the fluid level in the reservoir tank is within the specified range between the MAX - MIN lines as shown in the figure.
- Visually check for any brake fluid leaks around the reservoir tank.
- Check the brake system for any leaks if the fluid level is extremely low (lower than MIN).
- Check the brake system for fluid leaks if the warning lamp remains illuminated even after the parking brake is released.
- Check the reservoir tank for the mixing of foreign matter (e.g. dust) and oils other than brake fluid.
Scheme 51
- Check brake tubes and hoses for cracks, deterioration or other damage. Replace any damaged parts.
- Check for brake fluid leaks by fully depressing brake pedal while engine is running. CAUTION: Retighten the applicable connection to the specified torque and repair any abnormal (damaged, worn or deformed) part if any brake fluid leaks are present.
AIR TIGHT
- Run the engine at idle for 1 minute to apply vacuum to the brake booster, and stop the engine. Then depress the brake pedal several times at 5-second intervals until the accumulated vacuum is released to atmospheric pressure. Check that the clearance between brake pedal and dash lower panel gradually increases each time the brake pedal is depressed when performing this operation.
- Depress the brake pedal with the engine running. Then stop the engine while holding down the brake pedal. Check that the brake pedal stroke does not change after holding down the brake pedal for 30 seconds or more.
BRAKE BURNISHING
Burnish contact surfaces between disc brake rotor and brake pads according to the following procedure after refinishing disc brake rotors, replacing disc brake rotors, replacing brake pads, or if a soft pedal occurs at very low mileage
| CAUTION | Be careful of vehicle speed because the brake pedal does not operate firmly/securely until pads and disc brake rotor are securely seated. Only perform this procedure under safe road and traffic conditions. Use extreme caution. |
- Drive vehicle on straight, flat road.
- Depress brake pedal with the power to stop vehicle within 3 to 5 seconds until the vehicle stops.
- Drive without depressing brake pedal for a few minutes to cool the brakes.
- Repeat steps 1 to 3 until pad and disc brake rotor are securely seated.
Burnish contact surfaces between brake lining and brake drum according to the following procedure after refinishing brake drum, replacing brake drum, replacing brake lining, or if a soft pedal occurs at very low mileage
| CAUTION | Be careful of vehicle speed because the brake pedal does not operate firmly/securely until brake lining and brake drum are securely seated. Only perform this procedure under safe road and traffic conditions. Use extreme caution. |
- Drive vehicle on straight, flat road.
- Depress brake pedal with the power to stop vehicle within 3 to 5 seconds until the vehicle stops.
- Drive without depressing brake pedal for a few minutes to cool the brake.
- Repeat steps 1 to 3 until brake lining and brake drum are securely seated.
Appearance
Check for correct assembly, damage and deterioration.
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Brake Pedal
| Unit: mm (in) | |
|---|---|
| Item | Standard |
| Brake pedal height | 158 ±5 (6.22 ±0.20) |
| Clearance between brake pedal lever and the stop lamp switch threaded end | 0.2 - 1.96 (0.008 - 0.077) |
| Brake pedal full stroke | 128 (5.04) |
Check Valve
| Vacuum applied at intake manifold side. | 0 kPa (0 mmHg, 0 inHg) |
|---|---|
| Vacuum leakage [at vacuum of -66.7 kPa (-500 mmHg, -19.69 inHg) applied at booster side.] | Within 1.3 kPa (10 mmHg, 0.39 inHg) of vacuum for 15 seconds. |
Brake Booster
| Unit: mm (in) | |
|---|---|
| Item | Standard |
| Input rod length | 125 (4.92) |
Front Disc Brake
| Unit: mm (in) | ||
|---|---|---|
| Item | Limit | |
| Brake pad | Wear thickness | 2.0 (0.08) |
| Disc rotor | Wear thickness | 20.0 (0.787) |
| Thickness variation (measured at 8 positions) | 0.013 (0.001) | |
| Runout (with it attached to the vehicle) | 0.055 (0.002) | |
Rear Drum Brake
| Unit: mm (in) | ||
|---|---|---|
| Item | Limit | |
| Brake lining | Wear thickness | 1.0 (0.04) |
| Brake drum | Wear inner diameter-maximum | 204.2 (8.04) |