Nissan Sentra Service Manual: Unexpected pedal reaction

Nissan Sentra Service Manual / Brakes / Brake control system / Symptom diagnosis / Unexpected pedal reaction

Diagnosis Procedure

1.CHECK BRAKE PEDAL STROKE

Check brake pedal stroke. Refer to BR-15, "Adjustment".

Is the stroke too big? YES >>

Bleed air from brake line and hose. Refer to BR-17, "Bleeding Brake System".
Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake system fluid leakage, etc. Refer to brake pedal: BR-15, "Adjustment" or brake booster assembly BR-11, "Inspection".

NO >> GO TO 2

2.CHECK ABS FUNCTION

Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS.
Check if braking force is normal in this condition.
Reconnect connector after inspection.

Is the inspection result normal? YES >> Inspection End.

NO >> Check brake system.

Excessive abs function operation frequency

Diagnosis Procedure 1.CHECK START Check front and rear brake force distribution using a brake tester. Is the inspection result normal? YES >> GO TO 2 NO >> Check brake system. 2. ...

The braking distance is long

Diagnosis Procedure CAUTION: The stopping distance on slippery road surfaces might be longer with the ABS operating than when the ABS is not operating. 1.CHECK ABS FUNCTION Turn ignition ...

Other materials:

B terminal circuit
Description Terminal вЂњBвЂќ is constantly supplied with battery power. Diagnosis Procedure Regarding Wiring Diagram information, refer to STR-10, "Wiring Diagram" (with Intelligent Key system) or STR-15, "Wiring Diagram" (without Intelligent Key system). CAUTION: ...

Removal and installation
BCM Removal and installation Note: Before replacing BCM, perform вЂњREAD CONFIGURATIONвЂќ to save or print current vehicle specification. Refer to BCS-61, "CONFIGURATION (BCM) : Description". Removal Disconnect the negative battery terminal. Refer to pg-52, "removal a ...

Changing engine oil
Park the vehicle on a level surface and apply the parking brake. Start the engine and let it idle until it reaches operating temperature, then turn it off. Remove the oil filler cap A by turning it counterclockwise. Place a large drain pan under the drain plug B . Remove the d ...