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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 107 (Electronically Controlled Brake System (Hybrid) - Diagnostic Codes (1 Of 5)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C1214: Hydraulic Control System Malfunction [07/2019 - ] >> Procedure

DTC C1214: Hydraulic Control System Malfunction [07/2019 - ]: Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CUSTOMER PROBLEM ANALYSIS (CHECK CONDITION WHEN MALFUNCTION OCCURRED) AND FREEZE FRAME DATA 
    1. Interview the customer to check the vehicle conditions when the brake warning light / yellow (minor malfunction) illuminated.
    2. Using the Techstream, read the "Shift Lever Position", "Vehicle Speed", "Yaw Rate Sensor", "Steering Angle Sensor", "Reaction Force Pressure", "Servo Pressure" and "Accumulator Pressure" of the Freeze Frame Data stored when the DTC was stored.

      Also, read the Freeze Frame Data stored when the DTC was stored and make a note of the INF codes.

      Refer to FREEZE FRAME DATA [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Trouble Codes 

      NOTE:

      Make sure to make a note of the INF codes as they are used in a following step.

      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 C1214 to be stored based on the interview with the customer.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CHECK FOR FLUID LEAK 
    1. Check that there are no fluid leaks in the brake lines between the brake booster with master cylinder assembly and the wheel cylinders.
    2. Check that there is no brake fluid leaks from the brake booster with master cylinder assembly or brake actuator assembly body.
    3. Check that the brakes are not dragging.

      OK

      There are no fluid leaks or dragging.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE APPLICABLE PART 

    Result: 

    OK 

    See step  3

  3. PERFORM AIR BLEEDING 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Clear DTCs 

    2. Perform the air bleeding procedure in Bleed Brake System.

      Refer to BLEEDING [06/2018 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY AND BRAKE ACTUATOR ASSEMBLY (ACTUATOR SIDE) 
    1. Turn the power switch off.
    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 A45 skid control ECU (brake booster with master cylinder assembly) connector 2 minutes after the power switch is turned off.
    4. Disconnect the A54 brake actuator assembly connector.
    5. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

      Result

      Result Proceed to
      OK A
      NG (skid control ECU (brake booster with master cylinder assembly)) B
      NG (brake actuator assembly) C

    Result: 

    B 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    C 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    A 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (VEHICLE SIDE) 
    1. Reconnect the A45 skid control ECU (brake booster with master cylinder assembly) connector.
    2. Reconnect the A54 brake actuator assembly connector.
    3. Measure the voltage and resistance on the wire harness side.

      Refer to TERMINALS OF ECU [06/2018 - ]

      OK

      Voltage and resistance readings are all normal.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - BRAKE ACTUATOR ASSEMBLY) 
    1. Turn the power switch off.
    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 A45 skid control ECU (brake booster with master cylinder assembly) connector.
    4. Disconnect the A54 brake actuator assembly connector.
    5. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

    6. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A45-14 (+BS) - A54-5 (+BS) Always Below 1 Ω
      A45-14 (+BS) or A54-5 (+BS) - Body ground Always 10 kΩ or higher
      A45-48 (SFRH) - A54-28 (SFRH) Always Below 1 Ω
      A45-48 (SFRH) or A54-28 (SFRH) - Body ground Always 10 kΩ or higher
      A45-49 (SFLH) - A54-31 (SFLH) Always Below 1 Ω
      A45-49 (SFLH) or A54-31 (SFLH) - Body ground Always 10 kΩ or higher
      A45-50 (SRRH) - A54-30 (SRRH) Always Below 1 Ω
      A45-50 (SRRH) or A54-30 (SRRH) - Body ground Always 10 kΩ or higher
      A45-51 (SRLH) - A54-29 (SRLH) Always Below 1 Ω
      A45-51 (SRLH) or A54-29 (SRLH) - Body ground Always 10 kΩ or higher
      A45-44 (SFRR) - A54-18 (SFRR) Always Below 1 Ω
      A45-44 (SFRR) or A54-18 (SFRR) - Body ground Always 10 kΩ or higher
      A45-45 (SFLR) - A54-15 (SFLR) Always Below 1 Ω
      A45-45 (SFLR) or A54-15 (SFLR) - Body ground Always 10 kΩ or higher
      A45-46 (SRRR) - A54-16 (SRRR) Always Below 1 Ω
      A45-46 (SRRR) or A54-16 (SRRR) - Body ground Always 10 kΩ or higher
      A45-47 (SRLR) - A54-17 (SRLR) Always Below 1 Ω
      A45-47 (SRLR) or A54-17 (SRLR) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  7

  7. CHECK INFORMATION CODE 
    1. Reconnect the A45 skid control ECU (brake booster with master cylinder assembly) connector.
    2. Reconnect the A54 brake actuator assembly connector.
    3. Reconfirm the INF codes noted in step 1.

      Result

      Result Proceed to
      INF code 431, 432 or 436 was output in step 1. A
      INF code 438 was output in step 1. B
      INF code 440 or 441 was output in step 1. C
      INF code 442 was output in step 1. D

    Result: 

    B 

    See step  11

    Result: 

    C 

    See step  15

    Result: 

    D 

    See step  16

    Result: 

    A 

    See step  8

  8. READ VALUE USING TECHSTREAM (SERVO PRESSURE) 
    1. Connect an LSPV gauge set.
    2. Select the Data List on the Techstream.

      Refer to DATA LIST / ACTIVE TEST [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Servo Pressure Pressure value of servo Min.: 0.00 MPa, Max.: 24.48 MPa Brake pedal released: 0.00 to 2.10 MPa Brake pedal is being depressed: Changes in proportion to the depression force of the brake pedal

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display
      Servo Pressure
    3. Depress the brake pedal slowly and check the servo pressure output values with respect to the wheel cylinder pressure values for each wheel.

      Standard Pressure

      SERVO PRESSURE (FOR FRONT RIGHT WHEEL)

      Hydraulic Pressure
      [MPa (kgf/cm2 , psi)]      		 Servo Pressure
      [MPa]
      2.0 (20.4, 290) 0.3 to 4.3
      5.0 (51.0, 725) 3.3 to 7.3
      7.0 (71.4, 1015) 5.3 to 9.3
      SERVO PRESSURE (FOR FRONT LEFT WHEEL)

      Hydraulic Pressure
      [MPa (kgf/cm2 , psi)]      		 Servo Pressure
      [MPa]
      2.0 (20.4, 290) 0.3 to 4.3
      5.0 (51.0, 725) 3.3 to 7.3
      7.0 (71.4, 1015) 5.3 to 9.3

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    OK 

    See step  9

  9. CHECK BRAKE DISC 
    1. Turn the power switch off.
    2. Disconnect the A44 brake pedal stroke sensor assembly connector.
    3. Perform a road test according to Freeze Frame Data or customer problem analysis. While driving, check for abnormal brake pedal vibration caused by brake discs that are worn or have excess runout.

      OK

      Brake pedal does not vibrate during braking.

      HINT: 

      • An unevenly worn disc may vibrate the caliper piston and cause fluctuations in brake line pressure, triggering a malfunction detection condition.
      • The brake pedal does not kick back due to caliper piston vibration during electronically controlled brake system control.
      • If the brake pedal stroke sensor assembly connector is disconnected, the fail-safe function will prohibit electronically controlled brake system control.
      • The Active Test does not prohibit electronically controlled brake system control when the vehicle is being driven, so disconnect the brake pedal stroke sensor assembly connector before continuing with inspection.
      • Uneven disc wear can be checked by measuring the disc thickness variation.

        for Front Brake: Refer to INSPECTION [06/2018 - ]

        for Rear Brake: Refer to INSPECTION [06/2018 - 08/2020] , or refer to INSPECTION [08/2020 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE BRAKE DISC 

    Result: 

    OK 

    See step  10

  10. RECONFIRM DTC 
    1. Turn the power switch off.
    2. Reconnect the A44 brake pedal stroke sensor assembly connector.
    3. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Clear DTCs 

    4. Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
    5. Turn the power switch off and wait for 2 minutes or more.
    6. Turn the power switch on (IG).
    7. Check if the same DTC is output.

      Refer to DTC CHECK / CLEAR [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Trouble Codes 

      Result

      Result Proceed to
      DTC C1214 is not output. A
      DTC C1214 is output. B

      HINT: 

      If the DTC is no longer output, it can be suspected that it was output due to an improperly connected connector.

      Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [06/2018 - ]

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    B 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

  11. READ VALUE USING TECHSTREAM (SERVO PRESSURE) 
    1. Connect an LSPV gauge set.
    2. Select the Data List on the Techstream.

      Refer to DATA LIST / ACTIVE TEST [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Servo Pressure Pressure value of servo Min.: 0.00 MPa, Max.: 24.48 MPa Brake pedal released: 0.00 to 2.10 MPa Brake pedal is being depressed: Changes in proportion to the depression force of the brake pedal

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display
      Servo Pressure
    3. Depress the brake pedal slowly and check the servo pressure output values with respect to the wheel cylinder pressure values for each wheel.

      Standard Pressure

      SERVO PRESSURE (FOR FRONT RIGHT WHEEL)

      Hydraulic Pressure
      [MPa (kgf/cm2 , psi)]      		 Servo Pressure
      [MPa]
      2.0 (20.4, 290) 0.3 to 4.3
      5.0 (51.0, 725) 3.3 to 7.3
      7.0 (71.4, 1015) 5.3 to 9.3
      SERVO PRESSURE (FOR FRONT LEFT WHEEL)

      Hydraulic Pressure
      [MPa (kgf/cm2 , psi)]      		 Servo Pressure
      [MPa]
      2.0 (20.4, 290) 0.3 to 4.3
      5.0 (51.0, 725) 3.3 to 7.3
      7.0 (71.4, 1015) 5.3 to 9.3

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    OK 

    See step  12

  12. CHECK BRAKE DISC 
    1. Turn the power switch off.
    2. Disconnect the A44 brake pedal stroke sensor assembly connector.
    3. Perform a road test according to Freeze Frame Data or customer problem analysis. While driving, check for abnormal brake pedal vibration caused by brake discs that are worn or have excess runout.

      OK

      Brake pedal does not vibrate during braking.

      HINT: 

      • An unevenly worn disc may vibrate the caliper piston and cause fluctuations in brake line pressure, triggering a malfunction detection condition.
      • The brake pedal does not kick back due to caliper piston vibration during electronically controlled brake system control.
      • If the brake pedal stroke sensor assembly connector is disconnected, the fail-safe function will prohibit electronically controlled brake system control.
      • The Active Test does not prohibit electronically controlled brake system control when the vehicle is being driven, so disconnect the brake pedal stroke sensor assembly connector before continuing with inspection.
      • Uneven disc wear can be checked by measuring the disc thickness variation.

        for Front Brake: Refer to INSPECTION [06/2018 - ]

        for Rear Brake: Refer to INSPECTION [06/2018 - 08/2020] , or refer to INSPECTION [08/2020 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE BRAKE DISC 

    Result: 

    OK 

    See step  13

  13. READ VALUE USING TECHSTREAM (BRAKE PEDAL STROKE SENSOR ASSEMBLY) 
    1. Turn the power switch off.
    2. Reconnect the A44 brake pedal stroke sensor assembly connector.
    3. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Clear DTCs 

    4. Turn the power switch off.
    5. Mount a pedal effort gauge.
    6. Turn the power switch on (READY) and depress the brake pedal once.

      HINT: 

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

    7. Select the Data List on the Techstream.

      Refer to DATA LIST / ACTIVE TEST [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Stroke Sensor Brake pedal stroke sensor Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 0.65 to 1.35 V Reading increases when brake pedal is depressed
      Stroke Sensor2 Brake pedal stroke sensor 2 Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 3.65 to 4.35 V Reading decreases when brake pedal is depressed

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display
      Stroke Sensor
      Stroke Sensor2
    8. Depress the brake pedal slowly and check the brake pedal stroke sensor assembly output voltages with respect to brake pedal depression force.
      NOTE:

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

      Standard Voltage

      Brake Effort
      [N (kgf, lbf)]      		 Stroke Sensor
      [V]      		 Stroke Sensor2
      [V]
      50 (5, 11.2) 1.27 to 1.97 3.03 to 3.73
      100 (10, 22.5) 1.45 to 2.15 2.85 to 3.55
      200 (20, 45.0) 1.67 to 2.37 2.63 to 3.33
      500 (51, 112.4) 1.83 to 2.53 2.47 to 3.17

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    OK 

    See step  14

  14. RECONFIRM DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Clear DTCs 

    2. Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
    3. Turn the power switch off and wait for 2 minutes or more.
    4. Turn the power switch on (IG).
    5. Check if the same DTC is output.

      Refer to DTC CHECK / CLEAR [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Trouble Codes 

      Result

      Result Proceed to
      DTC C1214 is not output. A
      DTC C1214 is output. B

      HINT: 

      If the DTC is no longer output, it can be suspected that it was output due to an improperly connected connector.

      Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [06/2018 - ]

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    B 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

  15. RECONFIRM DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Clear DTCs 

    2. Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
    3. Turn the power switch off and wait for 2 minutes or more.
    4. Turn the power switch on (IG).
    5. Check if the same DTC is output.

      Refer to DTC CHECK / CLEAR [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Trouble Codes 

      Result

      Result Proceed to
      DTC C1214 is not output. A
      DTC C1214 is output. B

      HINT: 

      If the DTC is no longer output, it can be suspected that it was output due to an improperly connected connector.

      Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [06/2018 - ]

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    B 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

  16. INSPECT BRAKE PEDAL STROKE SENSOR ASSEMBLY OUTPUT VOLTAGES AND WHEEL CYLINDER PRESSURE 
    1. Mount a pedal effort gauge.
    2. Disconnect the A55 brake booster pump assembly connector.
    3. Depress the brake pedal 10 times or more until it becomes hard.

      HINT: 

      Depressing the brake pedal with the connector of the brake booster pump assembly disconnected drops the accumulator pressure to approximately 0 MPa.

    4. Connect an LSPV gauge set.
    5. Select the Data List on the Techstream.

      Refer to DATA LIST / ACTIVE TEST [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Stroke Sensor Brake pedal stroke sensor Min.: 0.00 V, Max.: 5.00 V Brake pedal released: 0.65 to 1.35 V Reading increases when brake pedal is depressed

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display
      Stroke Sensor
    6. Slowly depress the brake pedal and check the brake pedal stroke sensor assembly output voltages and the wheel cylinder pressure with respect to brake pedal depression force.
      NOTE:

      Check the wheel cylinder pressure with the switching solenoid (SSA, SGH) off and an accumulator pressure of 0 MPa.

      Standard Pressure

      FOR FRONT RIGHT WHEEL

      Brake Effort
      [N (kgf, lbf)]      		 Stroke Sensor
      [V]      		 Hydraulic Pressure
      [MPa (kgf/cm2 , psi)]
      200 (20, 45.0) 1.42 to 2.12 0.03 (0.3, 4.4) to 2.03 (20.7, 294)
      500 (51, 112.4) 1.67 to 2.37 2.06 (21.0, 299) to 4.06 (41.4, 589)
      FOR FRONT LEFT WHEEL

      Brake Effort
      [N (kgf, lbf)]      		 Stroke Sensor
      [V]      		 Hydraulic Pressure
      [MPa (kgf/cm2 , psi)]
      200 (20, 45.0) 1.42 to 2.12 0.03 (0.3, 4.4) to 2.03 (20.7, 294)
      500 (51, 112.4) 1.67 to 2.37 2.06 (21.0, 299) to 4.06 (41.4, 589)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    OK 

    See step  17

  17. RECONFIRM DTC 
    1. Turn the power switch off.
    2. Reconnect the A55 brake booster pump assembly connector.
    3. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Clear DTCs 

    4. Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
    5. Turn the power switch off and wait for 2 minutes or more.
    6. Turn the power switch on (IG).
    7. Check if the same DTC is output.

      Refer to DTC CHECK / CLEAR [06/2018 - ]

      Chassis > ABS/VSC/TRAC > Trouble Codes 

      Result

      Result Proceed to
      DTC C1214 is not output. A
      DTC C1214 is output. B

      HINT: 

      If the DTC is no longer output, it can be suspected that it was output due to an improperly connected connector.

      Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [06/2018 - ]

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    B 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

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