2007 Lexus RX 350 FWDFACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Table

HINT:

If a trouble code is displayed during the DTC check, check the circuit indicated by the DTC. For details of each code, refer to the information in the DTC table.

DTC table of ABS: 

DTC TABLE OF ABS

DTC No. Detection Item Trouble Area
C0200/31  Right Front Wheel Speed Sensor Signal
  1. Right front speed sensor
  2. Each speed sensor circuit
  3. Sensor rotor
  4. Sensor installation
C0205/32  Front Speed Sensor LH Circuit
  1. Left front speed sensor
  2. Each speed sensor circuit
  3. Sensor rotor
  4. Sensor installation
C0210/33  Right Rear Wheel Speed Sensor Signal
  1. Right rear speed sensor
  2. Each speed sensor circuit
  3. Sensor rotor
  4. Sensor installation
C0215/34  Rear Speed Sensor LH Circuit
  1. Left rear speed sensor
  2. Each speed sensor circuit
  3. Sensor rotor
  4. Sensor installation
C0226/21  SFR Solenoid Circuit
  1. Brake actuator assembly
  2. SFRH or SFRR circuit
C0236/22  SFL Solenoid Circuit
  1. Brake actuator assembly
  2. SFLH or SFLR circuit
C0246/23  SRR Solenoid Circuit
  1. Brake actuator assembly
  2. SRRH or SRRR circuit
C0256/24  SRL Solenoid Circuit
  1. Brake actuator assembly
  2. SRLH or SRLR circuit
C0273/13  Open in ABS Motor Relay Circuit
  1. ABS NO. 2 fuse
  2. ABS MTR relay
  3. ABS MTR relay circuit
  4. J/B NO. 2
C0274/14  Short to B+ in ABS Motor Relay Circuit
  1. ABS NO. 2 fuse
  2. ABS MTR relay
  3. ABS MTR relay circuit
  4. J/B NO. 2
C0278/11  Open in ABS Solenoid Relay Circuit
  1. ABS NO. 1 fuse
  2. ABS SOL relay
  3. ABS SOL relay circuit
  4. Brake actuator assembly
C0279/12  Short to B+ in ABS Solenoid Relay Circuit
  1. ABS NO. 1 fuse
  2. ABS SOL relay
  3. ABS SOL relay circuit
  4. Brake actuator assembly
C1225/25  SM Solenoid Circuit
  1. SMF or SMR circuit
  2. Brake actuator assembly
C1235/35  Foreign Object is Attached on Tip of Front Speed Sensor RH
  1. Right front speed sensor
  2. Sensor installation
C1236/36  Foreign Object is Attached on Tip of Front Speed Sensor LH
  1. Left front speed sensor
  2. Sensor installation
C1238/38  Foreign Object is Attached on Tip of Rear Speed Sensor RH
  1. Right rear speed sensor
  2. Sensor installation
C1239/39  Foreign Object is Attached on Tip of Rear Speed Sensor LH
  1. Left rear speed sensor
  2. Sensor installation
C1241/41  Low Battery Positive Voltage
  1. Battery
  2. Charging system
  3. Power source circuit
C1243/43  Acceleration Sensor Stuck Malfunction
  1. Yaw rate and acceleration sensor
  2. Yaw rate and acceleration sensor circuit
C1244/44  Open or Short in Deceleration Sensor Circuit
  1. Yaw rate and acceleration sensor
  2. Yaw rate and acceleration sensor circuit
C1245/45  Acceleration Sensor Output Malfunction
  1. Yaw rate and acceleration sensor
  2. Yaw rate and acceleration sensor circuit
C1246/46  Master Cylinder Pressure Sensor Malfunction
  1. Master cylinder pressure sensor
  2. Master cylinder pressure sensor circuit
C1249/49  Open in Stop Light Switch Circuit
  1. Stop light assembly
  2. Stop light switch circuit
C1251/51  Open in Pump Motor Circuit
  1. Brake actuator assembly (GND circuit)
  2. Brake actuator assembly (Motor circuit)
C1267/67  Brake Pedal Load Sensing Switch
  1. Brake pedal load sensing switch
  2. Brake pedal load sensing switch circuit
C1337/37  Different Diameter Tire Malfunction
  1. Tire size
  2. Speed sensor
  3. Speed sensor rotor
  4. Speed sensor circuit
C1361/91  Short Circuit in ABS Motor Fail Safe Relay Circuit
  1. ABS NO. 2 fuse
  2. VSC MTR (ABS motor) relay
  3. VSC MTR (ABS motor) relay circuit
  4. J/B NO. 2
C1381/97  Yaw Rate and / or Acceleration Sensor Power Supply Voltage Malfunction
  1. Yaw rate and acceleration sensor
  2. Yaw rate and acceleration sensor power source circuit
U0073/94  Control Module Communication Bus OFF CAN communication system
U0124/95  Lost Communication with Lateral Acceleration Sensor Module CAN communication system (Skid control ECU to yaw rate sensor and acceleration sensor)

*1, *2:

Even after the trouble areas are repaired, the ABS warning light will not go off unless the following operations are performed.

  • *1:
    1. Drive the vehicle at 12 mph (20 km/h) for 30 seconds or more and check that the ABS warning light goes off.
    2. Clear the DTC.
  • *2:
    1. Keep the vehicle in a stationary condition for 5 seconds or more and depress the brake pedal lightly 2 or 3 times.
    2. Drive the vehicle at a speed of 31 mph (50 km/h). Then depress the brake pedal strongly for approximately 3 seconds.
    3. Repeat the above operation 3 times or more and check that the ABS warning light goes off.
    4. Clear the DTC.

      HINT:

      • In some cases, the intelligent tester cannot be used when the ABS warning light remains on.
      • If any of U0073/94 and U0124/95 are displayed, inspect the CAN communication system.

      DTC table of VSC: 

      DTC TABLE

      DTC No. Detection Item Trouble Area
      C1201/51  Engine Control System Malfunction Engine control system
      C1203/53  ECM Communication Circuit Malfunction ECM
      C1210/36  Zero Point Calibration of Yaw Rate Sensor Undone
      1. Yaw rate and acceleration sensor
      2. Zero point calibration undone
      C1223/43  ABS Control System Malfunction ABS control system
      C1231/31  Steering Angle Sensor Circuit Malfunction
      1. Steering angle sensor
      2. Steering angle sensor circuit
      3. +B circuit
      C1232/32  Stuck in Deceleration Sensor
      1. Yaw rate and acceleration sensor
      2. Yaw rate and acceleration sensor circuit
      C1234/34  Yaw Rate Sensor Malfunction
      1. Yaw rate and acceleration sensor
      2. Yaw rate and acceleration sensor circuit
      C1290/66  Steering Angle Sensor Zero Point Malfunction
      1. Yaw rate and acceleration sensor zero point calibration incomplete
      2. Poor adjustment of the centered position of the steering wheel
      3. Poor adjustment of front wheel alignment
      C1336/39  Zero Point Calibration of Acceleration Sensor Undone
      1. Acceleration sensor
      2. Zero point calibration undone
      U0100/65  Lost Communication with ECM/PCM CAN communication system (Skid control ECU to ECM)
      U0123/62  Lost Communication with Yaw Rate Sensor Module CAN communication system (Skid control ECU to yaw rate sensor and acceleration sensor)
      U0126/63  Lost Communication with Steering Angle Sensor Module CAN communication system (Skid control ECU to steering angle sensor)

      HINT:

      • In some cases, the intelligent tester cannot be used when the VSC warning light remains on.
      • If any of U0100/65, U0123/62 and U0126/63 are displayed, inspect the CAN communication system.

      Test Mode DTC of ABS: 

      TEST MODE DTC OF ABS

      DTC No. Detection Item Trouble Area
      C1271/71  Low Output Signal of Front Speed Sensor RH (Test Mode DTC)
      1. Front speed sensor RH
      2. Sensor installation
      3. Speed sensor rotor
      C1272/72  Low Output Signal of Front Speed Sensor LH (Test Mode DTC)
      1. Front speed sensor LH
      2. Sensor installation
      3. Speed sensor rotor
      C1273/73  Low Output Signal of Rear Speed Sensor RH (Test Mode DTC)
      1. Rear speed sensor RH
      2. Sensor installation
      3. Speed sensor rotor
      C1274/74  Low Output Signal of Rear Speed Sensor LH (Test Mode DTC)
      1. Rear speed sensor LH
      2. Sensor installation
      3. Speed sensor rotor
      C1275/75  Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) Speed sensor rotor
      C1276/76  Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) Speed sensor rotor
      C1277/77  Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) Speed sensor rotor
      C1278/78  Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) Speed sensor rotor
      C1279/79  Acceleration Sensor Output Voltage Malfunction (Test Mode DTC)
      1. Yaw rate and acceleration sensor
      2. Sensor installation
      C1281/81  Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC)
      1. Stop light switch
      2. Brake pedal load sensing switch
      3. Master cylinder pressure sensor

      Test Mode DTC of VSC: 

      TEST MODE DTC OF VSC

      DTC No. Detection Item Trouble Area
      C0371/71  Yaw Rate Sensor (Test Mode DTC) Yaw rate and acceleration sensor
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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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