ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1211, C1212, C1225, C1226

DTC Code DTC Name
C1211 SLA Linear Solenoid
C1212 SLR Linear Solenoid
C1225 SA1 Solenoid Circuit
C1226 SA2 Solenoid Circuit

DESCRIPTION

The linear solenoids SLA and SLR control the regulator based on signals from the skid control ECU (brake booster with master cylinder assembly) and produce servo pressure in accordance with the vehicle condition.

When the system is normal, the switching solenoid SGH is opened to allow brake fluid to flow to the stroke simulator when the brake pedal is depressed. When the system is abnormal, the switching solenoid SGH closes to prevent the flow of brake fluid.

When the system is normal, the switching solenoid SSA is closed. When the system is abnormal, the switching solenoid SSA is opened to allow fluid to flow to the brake master cylinder reservoir assembly.

Tech Tips

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

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C1211 SLA Linear Solenoid

21

22

23

24

25

26

  • INF Code: 21


    • Overcurrent is detected in the solenoid for 0.05 seconds or more.

  • INF Code: 22


    • An open is detected in the solenoid for 0.05 seconds or more.

  • INF Code: 23


    • An excessive current is detected in the solenoid for 0.05 seconds or more.

  • INF Code: 24


    • Current leakage is detected in the solenoid for 0.05 seconds or more.

  • INF Code: 25


    • A malfunction in the solenoid current monitoring circuit is detected for 0.05 seconds or more.

  • INF Code: 26


    • Insufficient current is detected in the solenoid for 0.05 seconds or more.

  • INF Code: 21, 22, 24


    • Brake booster with master cylinder assembly

  • INF Code: 23


    • Supply voltage reduced

    • Brake booster with master cylinder assembly

  • INF Code: 25, 26


    • Brake booster with master cylinder assembly

 Electronically controlled brake system DTC
C1212 SLR Linear Solenoid

31

32

33

34

35

36

  • INF Code: 31


    • Overcurrent is detected in the solenoid for 0.05 seconds or more.

  • INF Code: 32


    • An open is detected in the solenoid for 0.05 seconds or more.

  • INF Code: 33


    • An excessive current is detected in the solenoid for 0.05 seconds or more.

  • INF Code: 34


    • Current leakage is detected in the solenoid for 0.05 seconds or more.

  • INF Code: 35


    • A malfunction in the solenoid current monitoring circuit is detected for 0.05 seconds or more.

  • INF Code: 36


    • Insufficient current is detected in the solenoid for 0.05 seconds or more.

  • INF Code: 31, 32, 34


    • Brake booster with master cylinder assembly

  • INF Code: 33


    • Supply voltage reduced

    • Brake booster with master cylinder assembly

  • INF Code: 35, 36


    • Brake booster with master cylinder assembly

 Electronically controlled brake system DTC
C1225 SA1 Solenoid Circuit

41

42

43

44

45

46

  • INF Code: 41


    • Overcurrent is detected in SSA for 0.05 seconds or more.

  • INF Code: 42


    • An open is detected in SSA for 0.05 seconds or more.

  • INF Code: 43


    • Monitoring value of SSA continues to be excessively higher than request value.

  • INF Code: 44


    • Current leakage is detected in SSA for 0.05 seconds or more.

  • INF Code: 45


    • A malfunction in the SSA current monitoring circuit is detected for 0.05 seconds or more.

  • INF Code: 46


    • Monitoring value of SSA continues to be excessively lower than request value.

  • INF Code: 41, 42, 44


    • Brake booster with master cylinder assembly

  • INF Code: 43


    • Supply voltage reduced

    • Brake booster with master cylinder assembly

  • INF Code: 45, 46


    • Brake booster with master cylinder assembly

 Electronically controlled brake system DTC
C1226 SA2 Solenoid Circuit

71

72

73

74

75

76

  • INF Code: 71


    • Overcurrent is detected in SGH for 0.05 seconds or more.

  • INF Code: 72


    • An open is detected in SGH for 0.05 seconds or more.

  • INF Code: 73


    • Monitoring value of SGH continues to be excessively higher than request value.

  • INF Code: 74


    • Current leakage is detected in SGH for 0.05 seconds or more.

  • INF Code: 75


    • A malfunction in the SGH current monitoring circuit is detected for 0.05 seconds or more.

  • INF Code: 76


    • Monitoring value of SGH continues to be excessively lower than request value.

  • INF Code: 71, 72, 74


    • Brake booster with master cylinder assembly

  • INF Code: 73


    • Supply voltage reduced

    • Brake booster with master cylinder assembly

  • INF Code: 75, 76


    • Brake booster with master cylinder assembly

 Electronically controlled brake system DTC

CAUTION / NOTICE / HINT

Note

After replacing the brake booster with master cylinder assembly, perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory".

Click here

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Turn the power switch off.

    3. Turn the power switch on (IG).

    4. Check if the same DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes

      Tech Tips

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

      Result
      Result Proceed to
      DTCs C1211, C1212, C1225 and C1226 are not output. A
      A DTC related to low voltage is output. B
      DTCs C1211, C1212, C1225 and/or C1226 are output. (for LHD) C
      DTCs C1211, C1212, C1225 and/or C1226 are output. (for RHD) D

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Click here

    C

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY Click here

    D

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY Click here