Unexpected Pedal Reaction

TROUBLE DIAGNOSIS FOR SYMPTOMS


Unexpected Pedal Reaction

1.CHECK BRAKE PEDAL STROKE
Check brake pedal stroke. Refer to Procedures.
Is the stroke too big?
YES - � Bleed air from brake tube and hose. Refer to Service and Repair.
- Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake system fluid leakage, etc. Refer to brake pedal: Removal and Replacement, brake booster and master cylinder: Removal and Installation.
NO - GO TO 2.
2.CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS. Check if braking force is normal in this condition. Connect connector after inspection.
OK or NG
OK - Go to procedure 3 "CHECK WHEEL SENSOR AND SENSOR ROTOR". Refer to Excessive ABS Function Operation Frequency.
NG - Check brake system.