Monitor Description

SAE Code C1451: 

1. After replacing the skid control ECU (brake booster with master cylinder assembly) or brake booster pump assembly, if air bleeding is not performed and the vehicle is driven at a certain speed or more, the skid control ECU (brake booster with master cylinder assembly) judges that air bleeding has not been completed and illuminates the MIL and stores this DTC.

   Furthermore, this DTC is not cleared until air bleeding has been completed.

C1451 (INF Code 1152): 

1. After replacing the skid control ECU (brake booster with master cylinder assembly) or brake booster pump assembly, if air bleeding is not performed, the skid control ECU (brake booster with master cylinder assembly) judges that air bleeding has not been completed and illuminates the ABS warning, brake warning / red (malfunction), brake warning / yellow (minor malfunction) and slip indicator lights, blinks* the brake hold operated indicator light and stores this DTC.

   Furthermore, this DTC is not cleared until air bleeding has been completed.

   HINT: 

   • *: The brake hold switch (electric parking brake switch assembly) is turned on under the following vehicle conditions.
     1. Vehicle Conditions:
        1. The driver side door is closed.
        2. The driver side seat belt is fastened.
   • As the detection conditions slightly differ from SAE code C1451, the detection conditions for DTC C1451 (INF code 1152) is also provided.