DTC P05FF-62: Brake Pressure Sensor / Brake Pedal Position Sensor Signal Compare Failure [11/2020 - ]: Procedure

Pre-procedure1

• Interview the customer to check the vehicle conditions when the brake system warning light (red indicator) and brake system warning light (yellow indicator) illuminated.

• Using the GTS, check for Freeze Frame Data that is recorded when a DTC is stored.

  HINT: 

  Refer to FREEZE FRAME DATA [11/2020 - 12/2023] , or refer to FREEZE FRAME DATA [12/2023 - ]

  Chassis > Brake Booster > Trouble Codes 

  HINT: 

  • Freeze Frame Data is only stored once when a DTC is stored.
  • If other DTCs are output, repair any malfunctions related to those DTCs first, and then reproduce the conditions that caused DTC P05FF-62 to be stored based on the interview with the customer.

  Result

  Proceed to
  NEXT

Post-procedure1

• None

Result: 

NEXT 

See step  2

1. With the brake pedal released, confirm the brake pedal stroke sensor assembly output voltage.

   Chassis > Brake Booster > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Stroke Sensor	Brake pedal stroke sensor 1	Min.: 0.0 V Max.: 5.0 V	Brake pedal released: 0.6 to 1.4 V	Reading increases when brake pedal is depressed

   Chassis > Brake Booster > Data List 

   Tester Display
   Stroke Sensor

   Result

   Result	Proceed to
   The value of Stroke Sensor is between 0.6 and 1.4 V	A
   None of the above conditions are met	B

Result: 

B 

INSPECT/ADJUST INSTALLATION CONDITION OF BRAKE PEDAL STROKE SENSOR ASSEMBLY. Refer to  INSTALLATION [11/2020 - 12/2022]  , or refer to  INSTALLATION [12/2022 - ] 

Result: 

A 

See step  3

Pre-procedure1

• Turn the ignition switch off.
• Mount a pedal effort gauge.
• Turn the ignition switch to ON (READY) and depress the brake pedal once.

  HINT: 

  Depress the brake pedal after turning the ignition switch to ON (READY) to set the vehicle to linear mode (switching solenoid (SSA) on).

• Depress the brake pedal slowly and check the brake pedal stroke sensor assembly output voltages with respect to brake pedal depression force.

  Chassis > Brake Booster > Data List 

  Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
  Stroke Sensor	Brake pedal stroke sensor 1	Min.: 0.0 V Max.: 5.0 V	Brake pedal released: 0.6 to 1.4 V	Reading increases when brake pedal is depressed

  Chassis > Brake Booster > Data List 

  Tester Display
  Stroke Sensor

  HINT: 

  Perform this procedure in linear mode (switching solenoid (SSA) on).

  Standard Voltage

  Brake Effort [N (kgf, lbf)]	Stroke Sensor [V]
  50 (5.1, 11.2)	1.21 to 1.91
  100 (10.2, 22.5)	1.42 to 2.12
  150 (15.3, 33.7)	1.61 to 2.31

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

NG 

REPLACE BRAKE PEDAL STROKE SENSOR ASSEMBLY. Refer to  REMOVAL [11/2020 - 11/2021]  , or refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023]  , or refer to  REMOVAL [12/2023 - ] 

Result: 

OK 

See step  4

1. Depress the brake pedal slowly and check the reaction force pressure sensor output values with respect to brake pedal depression force.

   Chassis > Brake Booster > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Reaction Force Pressure	Pressure value of stroke simulator	Min.: 0.00 MPa Max.: 24.48 MPa	Brake pedal released: 0.00 to 1.53 MPa	Brake pedal is being depressed: Changes in proportion to the depression force of the brake pedal

   Chassis > Brake Booster > Data List 

   Tester Display
   Reaction Force Pressure

   HINT: 

   Perform this procedure in linear mode (switching solenoid (SSA) on).

   Standard Pressure

   Brake Effort [N (kgf, lbf)]	Reaction Force Pressure [MPa]
   50 (5.1, 11.2)	0.00 to 0.64
   100 (10.2, 22.5)	0.52 to 1.32
   150 (15.3, 33.7)	1.17 to 1.97
   200 (20.4, 45.0)	1.85 to 2.65

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CHECK AND REPAIR BRAKE FLUID LEAKS 

Result: 

OK 

See step  5

Pre-procedure1

• None

• Clear the DTCs.

  Chassis > Brake Booster > Clear DTCs 

  Result

  Proceed to
  NEXT

Post-procedure1

• Turn the ignition switch off.

Result: 

NEXT 

See step  6

Pre-procedure1

• Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.

• Check if the same DTC is output.

  Chassis > Brake Booster > Trouble Codes 

  Result

  Result	Proceed to
  P05FF-62 is not output	A
  P05FF-62 is output	B

Post-procedure1

• None

Result: 

A 

END 

Result: 

B 

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [11/2020 - 11/2021]  , or refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023]  , or refer to  REMOVAL [12/2023 - ]