TROUBLE DIAGNOSES FOR SYMPTOMS — Diagnostic Procedure 7 (Unexpected pedal action) / Diagnostic Procedure 8 (Long stopping distance)
BR-7043flowchartDiagnostic Procedure 7 (Unexpected pedal action)
Diagnostic Procedure 7 — Unexpected pedal action
1
A — CHECK BRAKE PEDAL STROKE.
Check brake pedal stroke. Is stroke excessively large?
Yes
Perform Preliminary Check, refer to BR-7031.
No
2
CHECK BRAKE PERFORMANCE
Disconnect ABS actuator and electric unit connector and check whether brake is effective.
No
same as step 1
Yes
3
B — CHECK WARNING LAMP ACTIVATE.
Ensure warning lamp remains off while driving.
NG
Carry out self-diagnosis. Refer to BR-7020, BR-7023.
OK
4
CHECK WHEEL SENSOR.
1. Check wheel sensor connector for terminal damage or loose connection.
2. Perform wheel sensor mechanical check.
NG
Repair.
OK
5
CHECK HARNESS CONNECTOR.
Check ABS actuator and electric unit pin terminals for damage or the connection of ABS actuator and electric unit harness connector.
Reconnect ABS actuator and electric unit harness connector. Then retest.
Diagnostic Procedure 8 (Long stopping distance)
Diagnostic Procedure 8 — Long stopping distance
1
CHECK ABS PERFORMANCE
Disconnect ABS actuator and electric unit connector and check whether stopping distance is still long.
No
Go to B in Diagnostic Procedure 7, BR-7043.
Yes
2
Perform Preliminary Check and air bleeding.
NOTE
Stopping distance may be larger than vehicles without ABS when road condition is slippery.