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Home >> Lexus >> 2004 >> GX 470 >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Abs With EBD & BA & TRAC & VSC System - Diagnosis >> Diagnostic Trouble Code Table

Diagnostic Trouble Code Table

NOTE: When removing the part, turn the ignition switch OFF.

HINT:

DTC Chart of ABS: 

DIAGNOSTIC TROUBLE CODE TABLE

DTC No. Detection Item Trouble Area
C0200/31 (1) Right front wheel speed sensor signal malfunction
  • Right front, left front, right rear and left rear speed sensor
  • Each speed sensor circuit
  • Sensor rotor
C0205/32 (1) Left front wheel speed sensor signal malfunction
C0210/33 (1) Right rear wheel speed sensor signal malfunction
C0215/34 (1) Left rear wheel speed sensor signal malfunction
C0226/21  Open or short circuit in brake master cylinder solenoid circuit (SFR circuit)
  • Brake master cylinder
  • SFRR or SFRH circuit
C0236/22  Open or short circuit in brake master cylinder solenoid circuit (SFL circuit)
  • Brake master cylinder
  • SFLR or SFLH circuit
C0246/23  Open or short circuit in brake master cylinder solenoid circuit (SRR circuit)
  • Brake master cylinder
  • SRRR or SRRH circuit
C0256/24  Open or short circuit in brake master cylinder solenoid circuit (SRL circuit)
  • Brake master cylinder
  • SRLR or SRLH circuit
C0278/11  Open or short circuit in ABS solenoid relay circuit
  • ABS solenoid relay
  • ABS solenoid relay circuit
C0279/12  B+ short circuit in ABS solenoid relay circuit
C1225/25  Open or short circuit in brake master cylinder solenoid circuit (SMC (SA1) circuit)
  • Brake master cylinder
  • SMC (SA1) circuit
C1226/26  Open or short circuit in brake master cylinder solenoid circuit (SPC (SA2) circuit)
  • Brake master cylinder
  • SPC (SA2) circuit
C1227/27  Open or short circuit in brake master cylinder solenoid circuit (SRC (SA3) circuit)
  • Brake master cylinder
  • SRC (SA3) circuit
C1228/28  Open or short circuit in brake master cylinder solenoid circuit (STR circuit)
  • Brake master cylinder
  • STR circuit
C1235/35  Foreign matters attached on the tip of the right front sensor
  • Right front, left front, right rear, left rear speed sensor
  • Sensor rotor
C1236/36  Foreign matters attached on the tip of the left front sensor
C1238/38  Foreign matters attached on the tip of the right rear sensor
C1239/39  Foreign matters attached on the tip of the left rear sensor
C1241/41  Low battery positive voltage or abnormally high battery positive voltage
  • Battery
  • IC regulator
  • Power source circuit
C1242/42 (2) Open circuit in IG2 circuit
  • Battery
  • IC regulator
  • Power source circuit
C1243/43  Malfunction in deceleration sensor (constant output)
  • Deceleration sensor
  • Deceleration sensor circuit
C1244/44  Open or short circuit in deceleration sensor circuit
  • Deceleration sensor
  • Deceleration sensor circuit
C1245/45  Malfunction in deceleration sensor
  • Deceleration sensor
  • Deceleration sensor circuit
C1246/46  Malfunction in master cylinder pressure sensor
  • Master cylinder pressure sensor
  • Master cylinder pressure sensor circuit
C1249/49  Open circuit in stop light switch circuit Stop light switch circuit
C1251/51 (2) Pump motor is locked
Open circuit in pump motor ground
Brake booster pump motor
C1252/52 (2) Brake booster pump motor malfunction
  • Brake booster pump motor
  • Brake booster pump motor circuit
  • Pressure switch (PH or PL)
C1253/53 (2) Brake booster pump motor relay malfunction
  • ABS and TRAC motor relay
  • ABS and TRAC motor relay circuit
  • Brake booster pump motor circuit
C1254/54 (2) Pressure switch malfunction
  • Pressure switch (PH or PL)
  • Pressure switch circuit
C1256/56 (2) Accumulator low pressure malfunction
  • Accumulator
  • Pressure switch (PH or PL)
  • Brake booster pump motor
C1257/57 (2) Power supply drive circuit malfunction
  • Battery
  • IC regulator
  • Power Source circuit
C1268/68  Transfer L4 position signal transmission failure
  • Transfer L4 position switch
  • Transfer L4 position switch circuit
C1306/96  Malfunction in speed sensor power supply
  • Speed sensor
  • Speed sensor circuit
C1337/37  Tires of different size Tire size
Always ON Malfunction in skid control ECU
  • Battery
  • IC regulator
  • Power source circuit
  • Skid control ECU
(1) As the DTC cannot be erased by replacing parts alone do either of the following operations.
  1. Clear DTC (See PRE-CHECK  ).
  2. At the vehicle speed of 20 km/h (12 mph), drive the vehicle for 30 sec. or more.
(2) Using the following table, troubled parts can be specified.
DIAGNOSTIC TROUBLE CODE TABLE

DTC C1242/42 C1251/51 C1252/52 C1253/53 C1254/54 C1256/56 C1257/57
BRAKE warning light and buzzer Light Buzzer Light Buzzer Light Buzzer Light Buzzer Light Buzzer Light Buzzer Light Buzzer
Pressure switch PH - - - - O O - - O - O O - -
PL - - - - O O - - O - O O - -
Pump motor circuit Pump motor - - O O O O - - - - O O - -
MTT wire harness - - - - O O O - - - - - - -
MT+ wire harness - - O - - - - - - - - - - -
MT- wire harness - - O - - - - - - - - - - -
Accumulator malfunction - - - - - - - - - - O O - -
Motor relay circuit MR1 open circuit - - - - - - O - - - - - - -
MR2 open circuit - - - - - - O - - - - - - -
MR1 welded contact - - - - O O O - - - - - - -
MR2 welded contact - - - - O O O - - - - - - -
Brake master cylinder Pressure leaks - - - - O O - - - - O O - -
Power source (1) IG2 open circuit O - - - - - - - - - - - - -
ECU Power supply circuit - - - - - - - - - - - - O -
(1) When IG2 circuit is open, ABS warning light and BRAKE warning light come on.

DTC Table of VSC: 

DIAGNOSTIC TROUBLE CODE

DTC No. Detection Item Trouble Area
C1201/51  ECM system malfunction Engine control system
C1203/53  ECM communication circuit malfunction
  • TRC+ or TRC - circuit
  • ENG+ or ENG - circuit
  • ECM
C1210/36  Zero point calibration of yaw rate sensor undone
  • Yaw rate sensor
  • Yaw rate sensor circuit
  • Neutral start switch circuit
C1223/43  ABS control system Malfunction ABS control system
C1224/44  Open or short circuit in NE signal circuit
  • NEO circuit
  • ECM
  • Skid control ECU
C1231/31  Malfunction in steering angle sensor
  • Steering angle sensor
  • Steering angle sensor circuit
  • +BI circuit
C1232/32  Malfunction in deceleration sensor
  • Deceleration sensor
  • Deceleration sensor circuit
C1233/33  Open or short circuit in yaw rate sensor circuit
  • Yaw rate sensor
  • Yaw rate sensor circuit
C1234/34  Malfunction in yaw rate sensor
  • Yaw rate sensor
  • Yaw rate sensor circuit
C1335/35  Open circuit in steering angle sensor
  • Steering angle sensor
  • Steering angle sensor circuit
C1336/39  Zero point calibration of deceleration sensor undone
  • Deceleration sensor
  • Deceleration sensor circuit
  • Zero point calibration not done
C1340/47  Open circuit in center differential lock signal
  • Center differential lock system
  • Center differential lock circuit
  • Center differential lock indicator light circuit
C1380/64  Malfunction in stop light operation relay
  • Stop light operation relay
  • STP2 circuit
ALWAYS ON  Malfunction of skid control ECU
  • Battery
  • IC regulator
  • Power source circuit
  • Skid control ECU

HINT:

There is a case that hand-held tester cannot be used when ABS and/or VSC warning light is always on.

DTC of ABS sensor check function 

DIAGNOSTIC TROUBLE CODE

Code No. Diagnosis Trouble Area
C1271/71 Low output voltage of right front speed sensor
  • Right front speed sensor
  • Sensor installation
  • Sensor rotor
C1272/72 Low output voltage of left front speed sensor
  • Left front speed sensor
  • Sensor installation
  • Sensor rotor
C1273/73 Low output voltage of right rear speed sensor
  • Right rear speed sensor
  • Sensor installation
  • Sensor rotor
C1274/74 Low output voltage of left rear speed sensor
  • Left rear speed sensor
  • Sensor installation
  • Sensor rotor
C1275/75 Abnormal change in output voltage of right front speed sensor Right front sensor rotor
C1276/76 Abnormal change in output voltage of left front speed sensor Left front speed sensor rotor
C1277/77 Abnormal change in output voltage of right rear speed sensor Right rear sensor rotor
C1278/78 Abnormal change in output voltage of left rear speed sensor Left rear speed sensor rotor
C1279/79 Deceleration sensor is faulty
  • Deceleration sensor
  • Sensor installation
C1281/81 Master cylinder pressure sensor output signal is faulty Master cylinder pressure sensor
C1282/82 Transfer indicator (center diff. lock) switch malfunction Transfer indicator (center diff. lock) switch
C1283/83 Transfer L4 position switch malfunction Transfer L4 position switch

DTC of VSC sensor check function 

DIAGNOSTIC TROUBLE CODE

Code No. Diagnosis Trouble Area
C0371/71 Yaw rate sensor output signal malfunction
  • Yaw rate sensor
  • Yaw rate sensor circuit
C1379/74 DAC operating switch malfunction
  • DAC operating switch
  • DAC operating switch circuit