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Home >> Lexus >> 2008 >> GS 450h >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control >> Electronically Controlled Brake System >> DTC C1315/31 SMC1 Changeover Solenoid Malfunction; DTC C1316/32 SMC2 Changeover Solenoid Malfunction; DTC C1352/21 Front Increasing Pressure Solenoid RH Mai-function; 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 >> Description

DTC C1315/31 SMC1 Changeover Solenoid Malfunction; DTC C1316/32 SMC2 Changeover Solenoid Malfunction; DTC C1352/21 Front Increasing Pressure Solenoid RH Mai-function; 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: 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 electronically controlled brake system 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 operation when the system is malfunctioning.

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No. Information 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.
  • SMC1 circuit
  • Wire harness
  • 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.
  • SMC2 circuit
  • Wire harness
  • Skid control ECU
↑ 67 Current leaks 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.
  • Wire harness
  • Brake actuator assembly
  • 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.
  • Wire harness
  • Brake actuator assembly
  • 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.
  • Wire harness Brake actuator assembly
  • 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.
  • Wire harness
  • Brake actuator assembly
  • 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.
  • Wire harness
  • Brake actuator assembly
  • 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.
  • Wire harness Brake actuator assembly
  • 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.
  • Wire harness
  • Brake actuator assembly
  • 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.
  • Wire harness
  • Brake actuator assembly
  • 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. ↑