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Home >> Toyota >> 2020 >> Mirai >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (1 Of 2) >> Electronically Controlled Brake System >> DTC C1211-25: SLA Linear Solenoid; DTC C1212-26: SLR Linear Solenoid; DTC C1225-31: SA1 Solenoid Circuit; DTC C1226-32: SA2 Solenoid Circuit; DTC C1227-33: SA3 Solenoid Circuit; DTC C1228-34: STR Solenoid Circuit; DTC C1352-21: FR Solenoid; DTC C1353-23: RR Solenoid; DTC C1356-22: FL Solenoid; DTC C1357-24: RL Solenoid [06/2015 - ] >> Procedure

DTC C1211-25: SLA Linear Solenoid; DTC C1212-26: SLR Linear Solenoid; DTC C1225-31: SA1 Solenoid Circuit; DTC C1226-32: SA2 Solenoid Circuit; DTC C1227-33: SA3 Solenoid Circuit; DTC C1228-34: STR Solenoid Circuit; DTC C1352-21: FR Solenoid; DTC C1353-23: RR Solenoid; DTC C1356-22: FL Solenoid; DTC C1357-24: RL Solenoid [06/2015 - ]: Procedure

  1. CHECK DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [06/2015 - ]

      Chassis > ABS/VSC/TRAC > Clear DTCs 

    2. Turn the power switch off.
    3. Turn the power switch on (IG).
    4. Check if the same DTC is output.

      Refer to DTC CHECK / CLEAR [06/2015 - ]

      Chassis > ABS/VSC/TRAC > Trouble Codes 

      HINT: 

      If a DTC for undervoltage is output, first troubleshoot the power source system.

      Result

      Result Proceed to
      DTCs C1211/25, C1212/26, C1225/31, C1226/32, C1227/33, C1228/34, C1352/21, C1353/23, C1356/22 and C1357/24 are not output. A
      Undervoltage DTC C1241/41 is output. B
      DTCs C1211/25, C1212/26, C1225/31, C1226/32, C1227/33, C1228/34, C1352/21, C1353/23, C1356/22 and/or C1357/24 are output. C

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2015 - 11/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

    Result: 

    B 

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to  DIAGNOSTIC TROUBLE CODE CHART [06/2015 - ] 

    Result: 

    C 

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ]