ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1211/25, C1212/26, C1225/31, C1226/32, C1227/33, C1228/34, C1352/21, C1353/23, C1356/22, C1357/24

DTC Code DTC Name
C1211/25 SLA Linear Solenoid
C1212/26 SLR Linear Solenoid
C1225/31 SA1 Solenoid Circuit
C1226/32 SA2 Solenoid Circuit
C1227/33 SA3 Solenoid Circuit
C1228/34 STR Solenoid Circuit
C1352/21 FR Solenoid
C1353/23 RR Solenoid
C1356/22 FL Solenoid
C1357/24 RL Solenoid

DESCRIPTION

Each solenoid adjusts pressure which affects each wheel cylinder according to signals from the skid control ECU and controls the vehicle.

The master cut solenoid is closed and blocks the regulator pressure from the electronically controlled brake system control pressure when the system is normal. The master cut solenoid is open and sends the master cylinder and regulator hydraulic pressure to the non-assisted brake wheel cylinders during fail-safe operation during a system malfunction.

Tech Tips

If the supply voltage decreases, a drop in current may cause a DTC to be stored.

DTC No. INF Code DTC Detection Condition Trouble Area
C1211/25 21 Excess current is applied for 0.05 seconds or more. Brake booster with master cylinder assembly
↑ 22 An open is detected for 0.05 seconds or more while the solenoid is OFF. ↑
↑ 23 An open is detected for 0.05 seconds or more while the solenoid is ON.

  • Supply voltage reduced

  • Brake booster with master cylinder assembly
↑ 24 A short to +B or voltage leak is detected for 0.05 seconds. Brake booster with master cylinder assembly
C1212/26 31 Excess current is applied for 0.05 seconds or more. Brake booster with master cylinder assembly
↑ 32 An open is detected for 0.05 seconds or more while the solenoid is OFF. ↑
↑ 33 An open is detected for 0.05 seconds or more while the solenoid is ON.

  • Supply voltage reduced

  • Brake booster with master cylinder assembly
↑ 34 A short to +B or voltage leak is detected for 0.05 seconds. Brake booster with master cylinder assembly
C1225/31 41 Excess current is applied for 0.05 seconds or more. Brake booster with master cylinder assembly
↑ 42 An open is detected for 0.05 seconds or more while the solenoid is OFF. ↑
↑ 43 An open is detected for 0.05 seconds or more while the solenoid is ON.

  • Supply voltage reduced

  • Brake booster with master cylinder assembly
↑ 44 A short to +B or voltage leak is detected for 0.05 seconds. Brake booster with master cylinder assembly
C1226/32 51 Excess current is applied for 0.05 seconds or more. Brake booster with master cylinder assembly
↑ 52 An open is detected for 0.05 seconds or more while the solenoid is OFF. ↑
↑ 53 An open is detected for 0.05 seconds or more while the solenoid is ON.

  • Supply voltage reduced

  • Brake booster with master cylinder assembly
↑ 54 A short to +B or voltage leak is detected for 0.05 seconds. Brake booster with master cylinder assembly
C1227/33 61 Excess current is applied for 0.05 seconds or more. Brake booster with master cylinder assembly
↑ 62 An open is detected for 0.05 seconds or more while the solenoid is OFF. ↑
↑ 63 An open is detected for 0.05 seconds or more while the solenoid is ON.

  • Supply voltage reduced

  • Brake booster with master cylinder assembly
↑ 64 A short to +B or voltage leak is detected for 0.05 seconds. Brake booster with master cylinder assembly
C1228/34 71 Excess current is applied for 0.05 seconds or more. Brake booster with master cylinder assembly
↑ 72 An open is detected for 0.05 seconds or more while the solenoid is OFF. ↑
↑ 73 An open is detected for 0.05 seconds or more while the solenoid is ON.

  • Supply voltage reduced

  • Brake booster with master cylinder assembly
↑ 74 A short to +B or voltage leak is detected for 0.05 seconds. Brake booster with master cylinder assembly
C1352/21

11

12

 When the solenoid relay contact on, open or short in solenoid circuit continues for 0.05 seconds or more. Brake booster with master cylinder assembly
C1353/23

15

16

 When the solenoid relay contact on, open or short in solenoid circuit continues for 0.05 seconds or more. Brake booster with master cylinder assembly
C1356/22

13

14

 When the solenoid relay contact on, open or short in solenoid circuit continues for 0.05 seconds or more. Brake booster with master cylinder assembly
C1357/24

17

18

 When the solenoid relay contact on, open or short in solenoid circuit continues for 0.05 seconds or more. Brake booster with master cylinder assembly

INSPECTION PROCEDURE

Note

When replacing the skid control ECU (brake booster with master cylinder assembly) or brake actuator (brake booster with master cylinder assembly), perform initialization and calibration of the linear solenoid valve Click here.

PROCEDURE

  1. CHECK DTC

    1. Clear the DTCs Click here.

    2. Check if the same DTC is output Click here.

      Tech Tips

      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
      A DTC C1241/41 for undervoltage 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
    B

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Click here

    C

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY Click here

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here