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:

DTC/circuit diagnosis
P1610 LOCK MODE Description ECM forcibly switches to the mode that inhibits engine start, when engine start operation is performed 5 times or more while communication between ECM and BCM is not normal. DTC Logic DTC DETECTION LOGIC NOTE: If DTC P1610 is displayed with other DTC (for BCM or ...

Symptom diagnosis
HEATER AND AIR CONDITIONING SYSTEM CONTROL SYMPTOMS Diagnosis Chart By Symptom Note: Perform the self-diagnoses with consult before performing the symptom diagnosis. If dtc is detected, perform the corresponding diagnosis. INSUFFICIENT COOLING Description Symptom Insufficient ...

Front power window motor
Removal and Installation REMOVAL Remove the front door glass regulator (2). Refer to GW-16, "Removal and Installation". Remove the bolts (A) and the front power window motor (1). INSTALLATION Installation is in the reverse order of removal. ...