ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1315/31, C1316/32, C1352/21, C1353/23, C1354/25, C1355/27, C1356/22, C1357/24, C1358/26, C1359/28

DTC Code DTC Name
C1315/31 SMC1 Changeover Solenoid Malfunction
C1316/32 SMC2 Changeover Solenoid Malfunction
C1352/21 Front Increasing Pressure Solenoid RH Malfunction
C1353/23 Front Increasing Pressure Solenoid LH Malfunction
C1354/25 Rear Increasing Pressure Solenoid RH Malfunction
C1355/27 Rear Increasing Pressure Solenoid LH Malfunction
C1356/22 Front Decreasing Pressure Solenoid RH Malfunction
C1357/24 Front Decreasing Pressure Solenoid LH Malfunction
C1358/26 Rear Decreasing Pressure Solenoid RH Malfunction
C1359/28 Rear Decreasing Pressure Solenoid LH Malfunction

DESCRIPTION

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

The master cut solenoid (SMC1/2) is closed and blocks the master cylinder 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 hydraulic pressure to the non-assisted brake wheel cylinders during fail safe operation due to a system malfunction.

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C1315/31 SMC1 Changeover Solenoid Malfunction

61

62

63

64

  • INF Code: 61


    • Either of the following is detected:


      1. SMC1 drive circuit is malfunctioning for 0.05 seconds or more.

      2. Short to +B in SMC1.

  • INF Code: 62


    • Current leaks for 0.05 seconds or more when SMC1 is off.

  • INF Code: 63


    • Open circuit in SMC1 continues for 0.05 seconds or more.

  • INF Code: 64


    • Overcurrent in SMC1 continues for 0.05 seconds or more.

  • INF Code: 61, 62, 63


    • Open or short in wire harness

    • Master cut solenoid (SMC1) circuit

    • Skid control ECU assembly


  • INF Code: 64


    • Short in wire harness

    • Master cut solenoid (SMC1) circuit

    • Skid control ECU assembly

 Electronically controlled brake system DTC
C1316/32 SMC2 Changeover Solenoid Malfunction

66

67

68

69

  • INF Code: 66


    • Either of the following is detected:


      1. SMC2 drive circuit is malfunctioning for 0.05 seconds or more.

      2. Short to +B in SMC2.

  • INF Code: 67


    • Current leaks for 0.05 seconds or more when SMC2 is off.

  • INF Code: 68


    • Open circuit in SMC2 continues for 0.05 seconds or more.

  • INF Code: 69


    • Overcurrent in SMC2 continues for 0.05 seconds or more.

  • INF Code: 66, 67, 68


    • Open or short in wire harness

    • Master cut solenoid (SMC2) circuit

    • Skid control ECU assembly


  • INF Code: 69


    • Short in wire harness

    • Master cut solenoid (SMC2) circuit

    • Skid control ECU assembly

 Electronically controlled brake system DTC
C1352/21 Front Increasing Pressure Solenoid RH Malfunction

11

12

13

14

  • INF Code: 11


    • Open circuit in FRA continues for 0.05 seconds or more when FRA is off.

  • INF Code: 12


    • Open circuit in FRA continues for 0.05 seconds or more when FRA is on.

  • INF Code: 13


    • Short to +B or voltage leak in FRA continues for 0.05 seconds or more.

  • INF Code: 14


    • Overcurrent in FRA continues for 0.05 seconds or more.

  • INF Code: 11, 12


    • Open or short in wire harness

    • Improperly connected connector, deformation or corrosion of terminals

    • Brake actuator assembly

    • Skid control ECU assembly


  • INF Code: 13, 14


    • Short in wire harness

    • Brake actuator assembly

    • Skid control ECU assembly

 Electronically controlled brake system DTC
C1353/23 Front Increasing Pressure Solenoid LH Malfunction

21

22

23

24

  • INF Code: 21


    • Open circuit in FLA continues for 0.05 seconds or more when FLA is off.

  • INF Code: 22


    • Open circuit in FLA continues for 0.05 seconds or more when FLA is on.

  • INF Code: 23


    • Short to +B or voltage leak in FLA continues for 0.05 seconds or more.

  • INF Code: 24


    • Overcurrent in FLA continues for 0.05 seconds or more.

  • INF Code: 21, 22


    • Open or short in wire harness

    • Improperly connected connector, deformation or corrosion of terminals

    • Brake actuator assembly

    • Skid control ECU assembly


  • INF Code: 23, 24


    • Short in wire harness

    • Brake actuator assembly

    • Skid control ECU assembly

 Electronically controlled brake system DTC
C1354/25 Rear Increasing Pressure Solenoid RH Malfunction

31

32

33

34

  • INF Code: 31


    • Open circuit in RRA continues for 0.05 seconds or more when RRA is off.

  • INF Code: 32


    • Open circuit in RRA continues for 0.05 seconds or more when RRA is on.

  • INF Code: 33


    • Short to +B or voltage leak in RRA continues for 0.05 seconds or more.

  • INF Code: 34


    • Overcurrent in RRA continues for 0.05 seconds or more.

  • INF Code: 31, 32


    • Open or short in wire harness

    • Improperly connected connector, deformation or corrosion of terminals

    • Brake actuator assembly

    • Skid control ECU assembly


  • INF Code: 33, 34


    • Short in wire harness

    • Brake actuator assembly

    • Skid control ECU assembly

 Electronically controlled brake system DTC
C1355/27 Rear Increasing Pressure Solenoid LH Malfunction

41

42

43

44

  • INF Code: 41


    • Open circuit in RLA continues for 0.05 seconds or more when RLA is off.

  • INF Code: 42


    • Open circuit in RLA continues for 0.05 seconds or more when RLA is on.

  • INF Code: 43


    • Short to +B or voltage leak in RLA continues for 0.05 seconds or more.

  • INF Code: 44


    • Overcurrent in RLA continues for 0.05 seconds or more.

  • INF Code: 41, 42


    • Open or short in wire harness

    • Improperly connected connector, deformation or corrosion of terminals

    • Brake actuator assembly

    • Skid control ECU assembly


  • INF Code: 43, 44


    • Short in wire harness

    • Brake actuator assembly

    • Skid control ECU assembly

 Electronically controlled brake system DTC
C1356/22 Front Decreasing Pressure Solenoid RH Malfunction

16

17

18

19

  • INF Code: 16


    • Open circuit in FRR continues for 0.05 seconds or more when FRR is off.

  • INF Code: 17


    • Open circuit in FRR continues for 0.05 seconds or more when FRR is on.

  • INF Code: 18


    • Short to +B or voltage leak in FRR continues for 0.05 seconds or more.

  • INF Code: 19


    • Overcurrent in FRR continues for 0.05 seconds or more.

  • INF Code: 16, 17


    • Open or short in wire harness

    • Improperly connected connector, deformation or corrosion of terminals

    • Brake actuator assembly

    • Skid control ECU assembly


  • INF Code: 18, 19


    • Short in wire harness

    • Brake actuator assembly

    • Skid control ECU assembly

 Electronically controlled brake system DTC
C1357/24 Front Decreasing Pressure Solenoid LH Malfunction

26

27

28

29

  • INF Code: 26


    • Open circuit in FLR continues for 0.05 seconds or more when FLR is off.

  • INF Code: 27


    • Open circuit in FLR continues for 0.05 seconds or more when FLR is on.

  • INF Code: 28


    • Short to +B or voltage leak in FLR continues for 0.05 seconds or more.

  • INF Code: 29


    • Overcurrent in FLR continues for 0.05 seconds or more.

  • INF Code: 26, 27


    • Open or short in wire harness

    • Improperly connected connector, deformation or corrosion of terminals

    • Brake actuator assembly

    • Skid control ECU assembly


  • INF Code: 28, 29


    • Short in wire harness

    • Brake actuator assembly

    • Skid control ECU assembly

 Electronically controlled brake system DTC
C1358/26 Rear Decreasing Pressure Solenoid RH Malfunction

36

37

38

39

  • INF Code: 36


    • Open circuit in RRR continues for 0.05 seconds or more when RRR is off.

  • INF Code: 37


    • Open circuit in RRR continues for 0.05 seconds or more when RRR is on.

  • INF Code: 38


    • Short to +B or voltage leak in RRR continues for 0.05 seconds or more.

  • INF Code: 39


    • Overcurrent in RRR continues for 0.05 seconds or more.

  • INF Code: 36, 37


    • Open or short in wire harness

    • Improperly connected connector, deformation or corrosion of terminals

    • Brake actuator assembly

    • Skid control ECU assembly


  • INF Code: 38, 39


    • Short in wire harness

    • Brake actuator assembly

    • Skid control ECU assembly

 Electronically controlled brake system DTC
C1359/28 Rear Decreasing Pressure Solenoid LH Malfunction

46

47

48

49

  • INF Code: 46


    • Open circuit in RLR continues for 0.05 seconds or more when RLR is off.

  • INF Code: 47


    • Open circuit in RLR continues for 0.05 seconds or more when RLR is on.

  • INF Code: 48


    • Short to +B or voltage leak in RLR continues for 0.05 seconds or more.

  • INF Code: 49


    • Overcurrent in RLR continues for 0.05 seconds or more.

  • INF Code: 46, 47


    • Open or short in wire harness

    • Improperly connected connector, deformation or corrosion of terminals

    • Brake actuator assembly

    • Skid control ECU assembly


  • INF Code: 48, 49


    • Short in wire harness

    • Brake actuator assembly

    • Skid control ECU assembly

 Electronically controlled brake system DTC

WIRING DIAGRAM

A0021I0E13
A0020B0E09

CAUTION / NOTICE / HINT

Note

When replacing the skid control ECU assembly or brake actuator assembly, perform initialization and calibration of the linear solenoid valve.

Click here

PROCEDURE


  1. INSPECT BRAKE ACTUATOR ASSEMBLY


    1. Make sure that there is no looseness at the locking part and the connecting part of the connector.

      A0021R3C01
      *A for LHD *B for RHD
      *a

      Component without harness connected

      (Brake Actuator Assembly)

      		 - -

    2. Disconnect the A16 brake actuator assembly connector.

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

      Tech Tips

      Check the brake actuator assembly when it is cooled down.

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      20 (SMC1) - 19 (BS1) Always 15.3 to 21.0 Ω
      6 (SMC2) - 7 (BS2) Always 15.3 to 21.0 Ω
      8 (FRA+) - 5 (FRA-) Always 3.6 to 5.1 Ω
      13 (FLA+) - 14 (FLA-) Always 3.6 to 5.1 Ω
      12 (RRA+) - 11 (RRA-) Always 3.6 to 5.1 Ω
      10 (RLA+) - 9 (RLA-) Always 3.6 to 5.1 Ω
      22 (FRR+) - 21 (FRR-) Always 3.6 to 5.1 Ω
      27 (FLR+) - 28 (FLR-) Always 3.6 to 5.1 Ω
      26 (RRR+) - 25 (RRR-) Always 4.4 to 6.2 Ω
      24 (RLR+) - 23 (RLR-) Always 4.4 to 6.2 Ω
      for RHD
      Tester Connection Condition Specified Condition
      37 (SMC1) - 36 (BS1) Always 15.3 to 21.0 Ω
      19 (SMC2) - 20 (BS2) Always 15.3 to 21.0 Ω
      44 (FRA+) - 43 (FRA-) Always 3.6 to 5.1 Ω
      35 (FLA+) - 38 (FLA-) Always 3.6 to 5.1 Ω
      39 (RRA+) - 40 (RRA-) Always 3.6 to 5.1 Ω
      41 (RLA+) - 42 (RLA-) Always 3.6 to 5.1 Ω
      28 (FRR+) - 27 (FRR-) Always 3.6 to 5.1 Ω
      21 (FLR+) - 22 (FLR-) Always 3.6 to 5.1 Ω
      23 (RRR+) - 24 (RRR-) Always 4.4 to 6.2 Ω
      25 (RLR+) - 26 (RLR-) Always 4.4 to 6.2 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here
    REPLACE BRAKE ACTUATOR ASSEMBLY for RHD: Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU ASSEMBLY - BRAKE ACTUATOR ASSEMBLY)


    1. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

    2. Disconnect the A24 and A25 skid control ECU assembly connectors.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      A24-19 (RLA+) - A16-10 (RLA+) Always Below 1 Ω
      A24-19 (RLA+) or A16-10 (RLA+) - Body ground Always 10 kΩ or higher
      A24-20 (RLA-) - A16-9 (RLA-) Always Below 1 Ω
      A24-20 (RLA-) or A16-9 (RLA-) - Body ground Always 10 kΩ or higher
      A25-20 (RRA+) - A16-12 (RRA+) Always Below 1 Ω
      A25-20 (RRA+) or A16-12 (RRA+) - Body ground Always 10 kΩ or higher
      A25-21 (RRA-) - A16-11 (RRA-) Always Below 1 Ω
      A25-21 (RRA-) or A16-11 (RRA-) - Body ground Always 10 kΩ or higher
      A25-17 (FLA+) - A16-13 (FLA+) Always Below 1 Ω
      A25-17 (FLA+) or A16-13 (FLA+) - Body ground Always 10 kΩ or higher
      A25-18 (FLA-) - A16-14 (FLA-) Always Below 1 Ω
      A25-18 (FLA-) or A16-14 (FLA-) - Body ground Always 10 kΩ or higher
      A24-17 (FRA+) - A16-8 (FRA+) Always Below 1 Ω
      A24-17 (FRA+) or A16-8 (FRA+) - Body ground Always 10 kΩ or higher
      A24-18 (FRA-) - A16-5 (FRA-) Always Below 1 Ω
      A24-18 (FRA-) or A16-5 (FRA-) - Body ground Always 10 kΩ or higher
      A25-4 (FLR+) - A16-27 (FLR+) Always Below 1 Ω
      A25-4 (FLR+) or A16-27 (FLR+) - Body ground Always 10 kΩ or higher
      A25-3 (FLR-) - A16-28 (FLR-) Always Below 1 Ω
      A25-3 (FLR-) or A16-28 (FLR-) - Body ground Always 10 kΩ or higher
      A24-4 (FRR+) - A16-22 (FRR+) Always Below 1 Ω
      A24-4 (FRR+) or A16-22 (FRR+) - Body ground Always 10 kΩ or higher
      A24-3 (FRR-) - A16-21 (FRR-) Always Below 1 Ω
      A24-3 (FRR-) or A16-21 (FRR-) - Body ground Always 10 kΩ or higher
      A24-34 (RLR+) - A16-24 (RLR+) Always Below 1 Ω
      A24-34 (RLR+) or A16-24 (RLR+) - Body ground Always 10 kΩ or higher
      A24-33 (RLR-) - A16-23 (RLR-) Always Below 1 Ω
      A24-33 (RLR-) or A16-23 (RLR-) - Body ground Always 10 kΩ or higher
      A25-34 (RRR+) - A16-26 (RRR+) Always Below 1 Ω
      A25-34 (RRR+) or A16-26 (RRR+) - Body ground Always 10 kΩ or higher
      A25-33 (RRR-) - A16-25 (RRR-) Always Below 1 Ω
      A25-33 (RRR-) or A16-25 (RRR-) - Body ground Always 10 kΩ or higher
      A24-5 (SMC1) - A16-20 (SMC1) Always Below 1 Ω
      A24-5 (SMC1) or A16-20 (SMC1) - Body ground Always 10 kΩ or higher
      A24-32 (BS01) - A16-19 (BS1) Always Below 1 Ω
      A24-32 (BS01) or A16-19 (BS1) - Body ground Always 10 kΩ or higher
      A25-6 (SMC2) - A16-6 (SMC2) Always Below 1 Ω
      A25-6 (SMC2) or A16-6 (SMC2) - Body ground Always 10 kΩ or higher
      A25-32 (BS02) - A16-7 (BS2) Always Below 1 Ω
      A25-32 (BS02) or A16-7 (BS2) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      A24-19 (RLA+) - A16-41 (RLA+) Always Below 1 Ω
      A24-19 (RLA+) or A16-41 (RLA+) - Body ground Always 10 kΩ or higher
      A24-20 (RLA-) - A16-42 (RLA-) Always Below 1 Ω
      A24-20 (RLA-) or A16-42 (RLA-) - Body ground Always 10 kΩ or higher
      A25-20 (RRA+) - A16-39 (RRA+) Always Below 1 Ω
      A25-20 (RRA+) or A16-39 (RRA+) - Body ground Always 10 kΩ or higher
      A25-21 (RRA-) - A16-40 (RRA-) Always Below 1 Ω
      A25-21 (RRA-) or A16-40 (RRA-) - Body ground Always 10 kΩ or higher
      A25-17 (FLA+) - A16-35 (FLA+) Always Below 1 Ω
      A25-17 (FLA+) or A16-35 (FLA+) - Body ground Always 10 kΩ or higher
      A25-18 (FLA-) - A16-38 (FLA-) Always Below 1 Ω
      A25-18 (FLA-) or A16-38 (FLA-) - Body ground Always 10 kΩ or higher
      A24-17 (FRA+) - A16-44 (FRA+) Always Below 1 Ω
      A24-17 (FRA+) or A16-44 (FRA+) - Body ground Always 10 kΩ or higher
      A24-18 (FRA-) - A16-43 (FRA-) Always Below 1 Ω
      A24-18 (FRA-) or A16-43 (FRA-) - Body ground Always 10 kΩ or higher
      A25-4 (FLR+) - A16-21 (FLR+) Always Below 1 Ω
      A25-4 (FLR+) or A16-21 (FLR+) - Body ground Always 10 kΩ or higher
      A25-3 (FLR-) - A16-22 (FLR-) Always Below 1 Ω
      A25-3 (FLR-) or A16-22 (FLR-) - Body ground Always 10 kΩ or higher
      A24-4 (FRR+) - A16-28 (FRR+) Always Below 1 Ω
      A24-4 (FRR+) or A16-28 (FRR+) - Body ground Always 10 kΩ or higher
      A24-3 (FRR-) - A16-27 (FRR-) Always Below 1 Ω
      A24-3 (FRR-) or A16-27 (FRR-) - Body ground Always 10 kΩ or higher
      A24-34 (RLR+) - A16-25 (RLR+) Always Below 1 Ω
      A24-34 (RLR+) or A16-25 (RLR+) - Body ground Always 10 kΩ or higher
      A24-33 (RLR-) - A16-26 (RLR-) Always Below 1 Ω
      A24-33 (RLR-) or A16-26 (RLR-) - Body ground Always 10 kΩ or higher
      A25-34 (RRR+) - A16-23 (RRR+) Always Below 1 Ω
      A25-34 (RRR+) or A16-23 (RRR+) - Body ground Always 10 kΩ or higher
      A25-33 (RRR-) - A16-24 (RRR-) Always Below 1 Ω
      A25-33 (RRR-) or A16-24 (RRR-) - Body ground Always 10 kΩ or higher
      A24-5 (SMC1) - A16-37 (SMC1) Always Below 1 Ω
      A24-5 (SMC1) or A16-37 (SMC1) - Body ground Always 10 kΩ or higher
      A24-32 (BS01) - A16-36 (BS1) Always Below 1 Ω
      A24-32 (BS01) or A16-36 (BS1) - Body ground Always 10 kΩ or higher
      A25-6 (SMC2) - A16-19 (SMC2) Always Below 1 Ω
      A25-6 (SMC2) or A16-19 (SMC2) - Body ground Always 10 kΩ or higher
      A25-32 (BS02) - A16-20 (BS2) Always Below 1 Ω
      A25-32 (BS02) or A16-20 (BS2) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. RECONFIRM DTC


    1. Reconnect the A24 and A25 skid control ECU assembly connectors.

    2. Reconnect the A16 brake actuator assembly connector.

    3. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    4. Turn the power switch off.

    5. Turn the power switch on (IG).

    6. Check if the same DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTCs C1315/31, C1316/32, C1352/21, C1353/23, C1354/25, C1355/27, C1356/ 22, C1357/24, C1358/26 and C1359/28 are not output. A
      DTCs C1315/31, C1316/32, C1352/21, C1353/23, C1354/25, C1355/27, C1356/ 22, C1357/24, C1358/26 and/or C1359/28 are output. B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE SKID CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE SKID CONTROL ECU ASSEMBLY for RHD: Click here