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

1. Disconnect the A27 actuator connector.
   Fig 1: Identifying Brake Actuator Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

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

NG → See step   4 

OK: Go to next step 

1. Disconnect the A19 and A21 ECU connectors.
2. Disconnect the A27 actuator connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   A19-5 (SMC1) - A27-20 (SMC1)	Always	Below 1 Ω
   A19-32 (BSO1) - A27-19 (BS1)	Always	Below 1 Ω
   A19-17 (FRA+) - A27-8 (FRA+)	Always	Below 1 Ω
   A19-18 (FRA-) - A27-5 (FRA-)	Always	Below 1 Ω
   A19-4 (FRR+) - A27-22 (FRR+)	Always	Below 1 Ω
   A19-3 (FRR-) - A27-21 (FRR-)	Always	Below 1 Ω
   A19-19 (RLA+) - A27-10 (RLA+)	Always	Below 1 Ω
   A19-20 (RLA-) - A27-9 (RLA-)	Always	Below 1 Ω
   A19-34 (RLR+) - A27-24 (RLR+)	Always	Below 1 Ω
   A19-33 (RLR-) - A27-23 (RLR-)	Always	Below 1 Ω
   A21-6 (SMC2) - A27-6 (SMC2)	Always	Below 1 Ω
   A21-32 (BSO2) - A27-7 (BS2)	Always	Below 1 Ω
   A21-17 (FLA+) - A27-13 (FLA+)	Always	Below 1 Ω
   A21-18 (FLA-) - A27-14 (FLA-)	Always	Below 1 Ω
   A21-4 (FLR+) - A27-27 (FLR+)	Always	Below 1 Ω
   A21-3 (FLR-) - A27-28 (FLR-)	Always	Below 1 Ω
   A21-20 (RRA+) - A27-12 (RRA+)	Always	Below 1 Ω
   A21-21 (RRA-) - A27-11 (RRA-)	Always	Below 1 Ω
   A21-34 (RRR+) - A27-26 (RRR+)	Always	Below 1 Ω
   A21-33 (RRR-) - A27-25 (RRR-)	Always	Below 1 Ω

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

   Standard resistance

   Tester Connection	Condition	Specified Condition
   A19-5 (SMC1) - Body ground	Always	10 kΩ or higher
   A19-32 (BSO1) - Body ground	Always	10 kΩ or higher
   A19-17 (FRA+) - Body ground	Always	10 kΩ or higher
   A19-18 (FRA-) - Body ground	Always	10 kΩ or higher
   A19-4 (FRR+) - Body ground	Always	10 kΩ or higher
   A19-3 (FRR-) - Body ground	Always	10 kΩ or higher
   A19-19 (RLA+) - Body ground	Always	10 kΩ or higher
   A19-20 (RLA-) - Body ground	Always	10 kΩ or higher
   A19-34 (RLR+) - Body ground	Always	10 kΩ or higher
   A19-33 (RLR-) - Body ground	Always	10 kΩ or higher
   A21-6 (SMC2) - Body ground	Always	10 kΩ or higher
   A21-32 (BSO2) - Body ground	Always	10 kΩ or higher
   A21-17 (FLA+) - Body ground	Always	10 kΩ or higher
   A21-18 (FLA-) - Body ground	Always	10 kΩ or higher
   A21-4 (FLR+) - Body ground	Always	10 kΩ or higher
   A21-3 (FLR-) - Body ground	Always	10 kΩ or higher
   A21-20 (RRA+) - Body ground	Always	10 kΩ or higher
   A21-21 (RRA-) - Body ground	Always	10 kΩ or higher
   A21-34 (RRR+) - Body ground	Always	10 kΩ or higher
   A21-33 (RRR-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Clear the DTC. Refer to DTC CHECK / CLEAR .
2. Turn the engine switch on (IG).
3. Check if the same DTCs are recorded. Refer to DTC CHECK / CLEAR .

   HINT: 

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

   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 C1359/28) are output	B

B → See step   5 

A → END