DTC    C1315/31    SMC1 Changeover Solenoid Malfunction

DTC    C1316/32    SMC2 Changeover Solenoid Malfunction

DTC    C1352/21    Front Increasing Pressure Solenoid RH Malfunction

DTC    C1353/23    Front Increasing Pressure Solenoid LH Malfunction

DTC    C1354/25    Rear Increasing Pressure Solenoid RH Malfunction

DTC    C1355/27    Rear Increasing Pressure Solenoid LH Malfunction

DTC    C1356/22    Front Decreasing Pressure Solenoid RH Malfunction

DTC    C1357/24    Front Decreasing Pressure Solenoid LH Malfunction

DTC    C1358/26    Rear Decreasing Pressure Solenoid RH Malfunction

DTC    C1359/28    Rear Decreasing Pressure Solenoid LH Malfunction

for Preparation Click here


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 (SMC 1/2) is closed and blocks the master cylinder pressure from the ECB control pressure when the system is normal. The master cut solenoid is open and sends the master cylinder fluid pressure to the non-assisted brake wheel cylinders during the fail safe due to a system malfunction.

DTC No.
INF Code
DTC Detection Condition
Trouble Area
C1315/31
61
When either of the following is detected:
  1. SMC1 drive circuit is malfunctioning for 0.05 seconds or more.
  2. Short to +B in SMC1.
  1. SMC1 circuit
  2. Wire harness or connector
  3. Skid control ECU
↑
62
Current leaks for 0.05 seconds or more when SMC1 is off.
↑
↑
63
Open circuit in SMC1 continues for 0.05 seconds or more.
↑
↑
64
Overcurrent in SMC1 continues for 0.05 seconds or more.
↑
C1316/32
66
When either of the following is detected:
  1. SMC2 drive circuit is malfunctioning for 0.05 seconds or more.
  2. Short to +B in SMC2.
  1. SMC2 circuit
  2. Wire harness or connector
  3. Skid control ECU
↑
67
Open circuit in SMC2 continues for 0.05 seconds or more when SMC2 is off.
↑
↑
68
Open circuit in SMC2 continues for 0.05 seconds or more.
↑
↑
69
Overcurrent in SMC2 continues for 0.05 seconds or more.
↑
C1352/21
11
Open circuit in SLAFR continues for 0.05 seconds or more when SLAFR is off.
  1. Wire harness or connector
  2. Brake actuator assembly
  3. Skid control ECU
↑
12
Open circuit in SLAFR continues for 0.05 seconds or more when SLAFR is on.
↑
↑
13
Short to +B or voltage leak in SLAFR continues for 0.05 seconds or more.
↑
↑
14
Overcurrent in SLAFR continues for 0.05 seconds or more.
↑
C1353/23
21
Open circuit in SLAFL continues for 0.05 seconds or more when SLAFL is off.
  1. Wire harness or connector
  2. Brake actuator assembly
  3. Skid control ECU
↑
22
Open circuit in SLAFL continues for 0.05 seconds or more when SLAFL is on.
↑
↑
23
Short to +B or voltage leak in SLAFL continues for 0.05 seconds or more.
↑
↑
24
Overcurrent in SLAFL continues for 0.05 seconds or more.
↑
C1354/25
31
Open circuit in SLARR continues for 0.05 seconds or more when SLARR is off.
  1. Wire harness or connector
  2. Brake actuator assembly
  3. Skid control ECU
↑
32
Open circuit in SLARR continues for 0.05 seconds or more when SLARR is on.
↑
↑
33
Short to +B or voltage leak in SLARR continues for 0.05 seconds or more.
↑
↑
34
Overcurrent in SLARR continues for 0.05 seconds or more.
↑
C1355/27
41
Open circuit in SLARL continues for 0.05 seconds or more when SLARL is off.
  1. Wire harness or connector
  2. Brake actuator assembly
  3. Skid control ECU
↑
42
Open circuit in SLARL continues for 0.05 seconds or more when SLARL is on.
↑
↑
43
Short to +B or voltage leak in SLARL continues for 0.05 seconds or more.
↑
↑
44
Overcurrent in SLARL continues for 0.05 seconds or more.
↑
C1356/22
16
Open circuit in SLRFR continues for 0.05 seconds or more when SLRFR is off.
  1. Wire harness or connector
  2. Brake actuator assembly
  3. Skid control ECU
↑
17
Open circuit in SLRFR continues for 0.05 seconds or more when SLRFR is on.
↑
↑
18
Short to +B or voltage leak in SLRFR continues for 0.05 seconds or more.
↑
↑
19
Overcurrent in SLRFR continues for 0.05 seconds or more.
↑
C1357/24
26
Open circuit in SLRFL continues for 0.05 seconds or more when SLRFL is off.
  1. Wire harness or connector
  2. Brake actuator assembly
  3. Skid control ECU
↑
27
Open circuit in SLRFL continues for 0.05 seconds or more when SLRFL is on.
↑
↑
28
Short to +B or voltage leak in SLRFL continues for 0.05 seconds or more.
↑
↑
29
Overcurrent in SLRFL continues for 0.05 seconds or more.
↑
C1358/26
36
Open circuit in SLRRR continues for 0.05 seconds or more when SLRRR is off.
  1. Wire harness or connector
  2. Brake actuator assembly
  3. Skid control ECU
↑
37
Open circuit in SLRRR continues for 0.05 seconds or more when SLRRR is on.
↑
↑
38
Short to +B or voltage leak in SLRRR continues for 0.05 seconds or more.
↑
↑
39
Overcurrent in SLRRR continues for 0.05 seconds or more.
↑
C1359/29
46
Open circuit in SLRRL continues for 0.05 seconds or more when SLRRL is off.
  1. Wire harness or connector
  2. Brake actuator assembly
  3. Skid control ECU
↑
47
Open circuit in SLRRL continues for 0.05 seconds or more when SLRRL is on.
↑
↑
48
Short to +B or voltage leak in SLRRL continues for 0.05 seconds or more.
↑
↑
49
Overcurrent in SLRRL continues for 0.05 seconds or more.
↑

WIRING DIAGRAM


C109408E01


INSPECTION PROCEDURE

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

1.INSPECT BRAKE ACTUATOR ASSEMBLY


    C112754E01

  1. Disconnect the brake actuator assembly connector.

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

    Resistance:
    LHD:
    Tester Connection
    		Specified Condition
    A16-20 (SMC1) - A16-6 (BS1)
    		15.3 to 25.0 Ω
    A16-19 (SMC2) - A16-7 (BS2)
    		15.3 to 25.0 Ω
    A16-8 (FRA+) - A16-5 (FRA-)
    		3.6 to 6.0 Ω
    A16-22 (FRR+) - A16-21 (FRR-)
    		3.6 to 6.0 Ω
    A16-13 (FLA+) - A16-14 (FLA-)
    		3.6 to 6.0 Ω
    A16-27 (FLR+) - A16-28 (FLR-)
    		3.6 to 6.0 Ω
    A16-12 (RRA+) - A16-11 (RRA-)
    		3.6 to 6.0 Ω
    A16-10 (RLA+) - A16-9 (RLA-)
    		3.6 to 6.0 Ω
    A16-26 (RRR+) - A16-25 (RRR-)
    		4.4 to 7.0 Ω
    A16-24 (RLR+) - A16-23 (RLR-)
    		4.4 to 7.0 Ω

    Resistance:
    RHD:
    Tester Connection
    		Specified Condition
    A16-37 (SMC1) - A16-19 (BS1)
    		15.3 to 25.0 Ω
    A16-36 (SMC2) - A16-20 (BS2)
    		15.3 to 25.0 Ω
    A16-44 (FRA+) - A16-43 (FRA-)
    		3.6 to 6.0 Ω
    A16-28 (FRR+) - A16-27 (FRR-)
    		3.6 to 6.0 Ω
    A16-35 (FLA+) - A16-43 (FLA-)
    		3.6 to 6.0 Ω
    A16-21 (FLR+) - A16-22 (FLR-)
    		3.6 to 6.0 Ω
    A16-39 (RRA+) - A16-40 (RRA-)
    		3.6 to 6.0 Ω
    A16-41 (RLA+) - A16-42 (RLA-)
    		3.6 to 6.0 Ω
    A16-23 (RRR+) - A16-24 (RRR-)
    		4.4 to 7.0 Ω
    A16-25 (RLR+) - A16-26 (RLR-)
    		4.4 to 7.0 Ω



NG
REPLACE BRAKE ACTUATOR ASSEMBLY
OK


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


    C112755E01

  1. Disconnect the skid control ECU (A13, A15) connectors and brake actuator assembly connector.

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

    Resistance:
    LHD:
    Tester Connection
    		Specified Condition
    A13-5 (SMC1) - A16-20 (SMC1)
    		Below 1 Ω
    A13-32 (BSO1) - A16-6 (BS1)
    		Below 1 Ω
    A13-3 (FRA+) - A16-8 (FRA+)
    		Below 1 Ω
    A13-18 (FRA-) - A16-5 (FRA-)
    		Below 1 Ω
    A13-4 (FRR+) - A16-22 (FRR+)
    		Below 1 Ω
    A13-17 (FRR-) - A16-21 (FRR-)
    		Below 1 Ω
    A13-33 (RLA+) - A16-10 (RLA+)
    		Below 1 Ω
    A13-35 (RLA-) - A16-9 (RLA-)
    		Below 1 Ω
    A13-34 (RLR+) - A16-24 (RLR+)
    		Below 1 Ω
    A13-19 (RLR-) - A16-23 (RLR-)
    		Below 1 Ω
    A15-5 (SMC2) - A16-19 (SMC2)
    		Below 1 Ω
    A15-28 (BSO2) - A16-7 (BS2)
    		Below 1 Ω
    A15-3 (FLA+) - A16-13 (FLA+)
    		Below 1 Ω
    A15-16 (FLA-) - A16-14 (FLA-)
    		Below 1 Ω
    A15-4 (FLR+) - A16-27 (FLR+)
    		Below 1 Ω
    A15-15 (FLR-) - A16-28 (FLR-)
    		Below 1 Ω
    A15-29 (RRA+) - A16-12 (RRA+)
    		Below 1 Ω
    A15-17 (RRA-) - A16-11 (RRA-)
    		Below 1 Ω
    A15-30 (RRR+) - A16-26 (RRR+)
    		Below 1 Ω
    A15-31 (RRR-) - A16-25 (RRR-)
    		Below 1 Ω

    Resistance:
    RHD:
    Tester Connection
    		Specified Condition
    A13-5 (SMC1) - A16-37 (SMC1)
    		Below 1 Ω
    A13-32 (BSO1) - A16-19 (BS1)
    		Below 1 Ω
    A13-3 (FRA+) - A16-44 (FRA+)
    		Below 1 Ω
    A13-18 (FRA-) - A16-43 (FRA-)
    		Below 1 Ω
    A13-4 (FRR+) - A16-28 (FRR+)
    		Below 1 Ω
    A13-17 (FRR-) - A16-27 (FRR-)
    		Below 1 Ω
    A13-33 (RLA+) - A16-41 (RLA+)
    		Below 1 Ω
    A13-35 (RLA-) - A16-42 (RLA-)
    		Below 1 Ω
    A13-34 (RLR+) - A16-25 (RLR+)
    		Below 1 Ω
    A13-19 (RLR-) - A16-26 (RLR-)
    		Below 1 Ω
    A15-5 (SMC2) - A16-36 (SMC2)
    		Below 1 Ω
    A15-28 (BSO2) - A16-20 (BS2)
    		Below 1 Ω
    A15-3 (FLA+) - A16-35 (FLA+)
    		Below 1 Ω
    A15-16 (FLA-) - A16-43 (FLA-)
    		Below 1 Ω
    A15-4 (FLR+) - A16-21 (FLR+)
    		Below 1 Ω
    A15-15 (FLR-) - A16-22 (FLR-)
    		Below 1 Ω
    A15-29 (RRA+) - A16-39 (RRA+)
    		Below 1 Ω
    A15-17 (RRA-) - A16-40 (RRA-)
    		Below 1 Ω
    A15-30 (RRR+) - A16-23 (RRR+)
    		Below 1 Ω
    A15-31 (RRR-) - A16-24 (RRR-)
    		Below 1 Ω

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

    Resistance:
    Tester Connection
    		Specified Condition
    A13-5 (SMC1)) - Body ground
    		10 kΩ or higher
    A13-32 (BSO1) - Body ground
    		10 kΩ or higher
    A13-3 (FRA+) - Body ground
    		10 kΩ or higher
    A13-18 (FRA-) - Body ground
    		10 kΩ or higher
    A13-4 (FRR+) - Body ground
    		10 kΩ or higher
    A13-17 (FRR-) - Body ground
    		10 kΩ or higher
    A13-33 (RLA+) - Body ground
    		10 kΩ or higher
    A13-35 (RLA-) - Body ground
    		10 kΩ or higher
    A13-34 (RLR+) - Body ground
    		10 kΩ or higher
    A13-19 (RLR-) - Body ground
    		10 kΩ or higher
    A15-5 (SMC2) - Body ground
    		10 kΩ or higher
    A15-28 (BSO2) - Body ground
    		10 kΩ or higher
    A15-3 (FLA+) - Body ground
    		10 kΩ or higher
    A15-16 (FLA-) - Body ground
    		10 kΩ or higher
    A15-4 (FLR+) - Body ground
    		10 kΩ or higher
    A15-15 (FLR-) - Body ground
    		10 kΩ or higher
    A15-29 (RRA+) - Body ground
    		10 kΩ or higher
    A15-17 (RRA-) - Body ground
    		10 kΩ or higher
    A15-30 (RRR+) - Body ground
    		10 kΩ or higher
    A15-31 (RRR-) - Body ground
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.RECONFIRM DTC

  1. Clear the DTC (Click here).

  1. Turn the engine switch on (IG).

  1. Check if the same DTCs are recorded (Click here).

    HINT:
    Reinstall the sensors, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs.


    Result:

    Condition
    		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 C1359/28) are output
    		B



B
REPLACE SKID CONTROL ECU
A

END