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: Procedure
- INSPECT BRAKE ACTUATOR ASSEMBLY
- Make sure that there is no looseness at the locking part and the connecting part of the connector.TEXT IN ILLUSTRATION
*1 Component without harness connected
(Brake Actuator)- - - Disconnect the brake actuator connector.
- Measure the resistance according to the value(s) in the table below.
HINT:
Check the brake actuator assembly when it is cooled down.
Standard Resistance
Tester Connection Condition Specified Condition 20 (SMC1) - 19 (BS1) Always 15.3 to 17.3 Ω 20 (SMC1) - Body ground Always 10 kΩ or higher 6 (SMC2) - 7 (BS2) Always 15.3 to 17.3 Ω 6 (SMC2) - Body ground Always 10 kΩ or higher 8 (FRA+) - 5 (FRA-) Always 3.6 to 4.2 Ω 8 (FRA+) - Body ground Always 10 kΩ or higher 13 (FLA+) - 14 (FLA-) Always 3.6 to 4.2 Ω 13 (FLA+) - Body ground Always 10 kΩ or higher 12 (RRA+) - 11 (RRA-) Always 3.6 to 4.2 Ω 12 (RRA+) - Body ground Always 10 kΩ or higher 10 (RLA+) - 9 (RLA-) Always 3.6 to 4.2 Ω 10 (RLA+) - Body ground Always 10 kΩ or higher 22 (FRR+) - 21 (FRR-) Always 3.6 to 4.2 Ω 22 (FRR+) - Body ground Always 10 kΩ or higher 27 (FLR+) - 28 (FLR-) Always 3.6 to 4.2 Ω 27 (FLR+) - Body ground Always 10 kΩ or higher 26 (RRR+) - 25 (RRR-) Always 4.4 to 5.0 Ω 26 (RRR+) - Body ground Always 10 kΩ or higher 24 (RLR+) - 23 (RLR-) Always 4.4 to 5.0 Ω 24 (RLR+) - Body ground Always 10 kΩ or higher
NG → See step 5
OK: Go to next step
- Make sure that there is no looseness at the locking part and the connecting part of the connector.
- CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BRAKE ACTUATOR)
- Make sure that there is no looseness at the locking part and the connecting part of the connector.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TEXT IN ILLUSTRATION*1 Front view of wire harness connector
(to Skid Control ECU)*2 Front view of wire harness connector
(to Brake Actuator) - Disconnect the A45 and A46 skid control ECU connectors.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A46-4 (SMC1) - A24-20 (SMC1) Always Below 1 Ω A46-4 (SMC1) - Body ground Always 10 kΩ or higher A45-4 (SMC2) - A24-6 (SMC2) Always Below 1 Ω A45-4 (SMC2) - Body ground Always 10 kΩ or higher A46-34 (FRA+) - A24-8 (FRA+) Always Below 1 Ω A46-34 (FRA+) - Body ground Always 10 kΩ or higher A46-33 (FRA-) - A24-5 (FRA-) Always Below 1 Ω A46-33 (FRA-) - Body ground Always 10 kΩ or higher A45-19 (FLA+) - A24-13 (FLA+) Always Below 1 Ω A45-19 (FLA+) - Body ground Always 10 kΩ or higher A45-18 (FLA-) - A24-14 (FLA-) Always Below 1 Ω A45-18 (FLA-) - Body ground Always 10 kΩ or higher A45-26 (RRA+) - A24-12 (RRA+) Always Below 1 Ω A45-26 (RRA+) - Body ground Always 10 kΩ or higher A45-27 (RRA-) - A24-11 (RRA-) Always Below 1 Ω A45-27 (RRA-) - Body ground Always 10 kΩ or higher A46-26 (RLA+) - A24-10 (RLA+) Always Below 1 Ω A46-26 (RLA+) - Body ground Always 10 kΩ or higher A46-27 (RLA-) - A24-9 (RLA-) Always Below 1 Ω A46-27 (RLA-) - Body ground Always 10 kΩ or higher A46-6 (FRR+) - A24-22 (FRR+) Always Below 1 Ω A46-6 (FRR+) - Body ground Always 10 kΩ or higher A46-7 (FRR-) - A24-21 (FRR-) Always Below 1 Ω A46-7 (FRR-) - Body ground Always 10 kΩ or higher A45-8 (FLR+) - A24-27 (FLR+) Always Below 1 Ω A45-8 (FLR+) - Body ground Always 10 kΩ or higher A45-9 (FLR-) - A24-28 (FLR-) Always Below 1 Ω A45-9 (FLR-) - Body ground Always 10 kΩ or higher A45-2 (RRR+) - A24-26 (RRR+) Always Below 1 Ω A45-2 (RRR+) - Body ground Always 10 kΩ or higher A45-1 (RRR-) - A24-25 (RRR-) Always Below 1 Ω A45-1 (RRR-) - Body ground Always 10 kΩ or higher A46-17 (RLR+) - A24-24 (RLR+) Always Below 1 Ω A46-17 (RLR+) - Body ground Always 10 kΩ or higher A46-16 (RLR-) - A24-23 (RLR-) Always Below 1 Ω A46-16 (RLR-) - Body ground Always 10 kΩ or higher A46-3 (BS01) - A24-19 (BS1) Always Below 1 Ω A46-3 (BS01) - Body ground Always 10 kΩ or higher A45-7 (BS02) - A24-7 (BS2) Always Below 1 Ω A45-7 (BS02) - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- Make sure that there is no looseness at the locking part and the connecting part of the connector.
- RECONFIRM DTC
- Reconnect the skid control ECU connectors and the brake actuator connector.
- Clear the DTCs, refer to DTC CHECK / CLEAR .
- Turn the ignition switch to ON (READY).
- Check if the same DTC is recorded, refer to DTC CHECK / CLEAR
.
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
B → See step 6
A → See step 4
- CHECK FOR INTERMITTENT PROBLEMS. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
- REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to REMOVAL
- REPLACE SKID CONTROL ECU. Refer to REMOVAL