DTC C05C1-51: Brake Pedal Position Sensor "B" Not Programmed [12/2021 - 10/2023]: Procedure

1. Perform brake pedal stroke sensor assembly zero point calibration.

   Refer to UTILITY [12/2021 - ]

   Chassis > Brake/EPB > Utility 

   Tester Display
   Reset Memory

   Chassis > Brake/EPB > Utility 

   Tester Display
   Calibration

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Clear the DTCs.

   Chassis > Brake Booster > Clear DTCs 

   Chassis > Brake/EPB > Clear DTCs 

2. Turn the ignition switch off.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
2. Check if the same DTC is output.

   Chassis > Brake Booster > Trouble Codes 

   Chassis > Brake/EPB > Trouble Codes 

   Result

   Result	Proceed to
   Only DTC C05C1-51 is output.	A
   DTCs are not output.	B
   DTCs other than C05C1-51 are output.	C

Result: 

B 

END 

Result: 

C 

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS 

Result: 

A 

See step  4

1. Turn the ignition switch off.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Brake Pedal Stroke Sensor Assembly)

2. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

   OK

   The connector is securely connected.

3. Disconnect the A103 brake pedal stroke sensor assembly connector.
4. Check both the connector case and the terminals for deformation and corrosion.

   OK

   No deformation or corrosion.

5. Turn the ignition switch to ON.
6. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A103-2 (VSK2) - A103-3 (SKG2)	Ignition switch ON	4.84 to 5.16 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE BRAKE PEDAL STROKE SENSOR ASSEMBLY. Refer to  REMOVAL [12/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR