c1336 LEXUS LS430 2003 Factory Repair Manual

HINT:
If a malfunction code is displayed during the DTC check, check the circuit indicated by the table below.
DIAGNOSTIC TROUBLE CODE CHART
SMF (BA-SOL)Turns TRAC solenoid SMF (BA-SOL)
ON / OFFOperation of solenoid (clicking sound)
can be heard
SMRTurns TRAC solenoid SMR ON / OFFOperation of solenoid (clicking sound)
can be heard
SOL RELAYTurns ABS solenoid relay ON / OFFOperation of solenoid (clicking sound)
can be heard
ABS MOT RELAYTurns ABS motor relay ON / OFFOperation of solenoid (clicking sound)
can be heard
ABS WARN LIGHTTurns ABS warning light ON / OFFObserve combination meter
VSC WARN LIGHTTurns VSC warning light ON / OFFObserve combination meter
VSC / TRC OFF INDTurns VSC / TRC OFF indicator ON /
OFFObserve combination meter
SLIP INDI LIGHTTurns SLIP indicator light ON / OFFObserve combination meter
BRAKE WRN LIGHTTurns BRAKE warning light ON / OFFObserve combination meter
VSC / BR WARN
BUZTurns VSC / BRAKE warning buzzer
ON / OFFBuzzer can be heard
STP LIGHT RELAYTurns stop light ON / OFFStop light come on
DTCDescription
DTC C0200/31, C0205/32RIGHT/LEFT FRONT SPEED SENSOR
DTC C0210/33, C0215/34RIGHT/LEFT REAR SPEED SENSOR
DTC C0226/21, C0236/22, C0246/23,
C0256/24, C1225/25
SFR/SFL/SRR/SRL/SM SOLENOID CIRCUIT
DTC C0273/13, C0274/14, C1361/91OPEN CIRCUIT IN ABS MOTOR RELAY CIRCUIT,
B+ SHORT CIRCUIT IN ABS MOTOR RELAY
CIRCUIT, SHORT CIRCUIT IN ABS MOTOR FAIL
SAFE RELAY CIRCUIT
DTC C0278/11, C0279/12OPEN/SHORT CIRCUIT IN ABS SOLENOID
RELAY CIRCUIT
DTC C1201/51ENGINE CONTROL SYSTEM MALFUNCTION
DTC C1203/53ECM COMMUNICATION CIRCUIT
MALFUNCTION
DTC C1210/36, C1336/39ZERO POINT CALIBRATION OF YAW
RATE/DECELERATION SENSOR UNDONE
DTC C1223/43ABS CONTROL SYSTEM MALFUNCTION
DTC C1231/31MALFUNCTION IN STEERING ANGLE SENSOR
CIRCUIT

NORMAL CODE DESCRIPTION
B: REPAIR ENGINE CONTROL SYSTEM ACCORDING TO DTC OUTPUT
A: REPLACE ECM
CIRCUIT DESCRIPTION
DTC DETECTING CONDITION DESCRIPTION
INSPECTION PROCEDURE
REPLACE ECM
CIRCUIT DESCRIPTION
Brake actuator receives signals from the yaw rate sensor (deceleration sensor) via CAN communication system.
Yaw rate sensor has the built-in deceleration sensor. If there is trouble in the bus lines between yaw rate sensor
(deceleration sensor) and CAN communication system, the DTC codes U0123/62 (yaw rate sensor
communication trouble) and U0124/95 (Deceleration sensor communication trouble) are output. The DTC is
also output when the calibration has not been completed.
Fig. 74: DTC C1210/36 And DTC C1336/39 Detecting Condition And Trouble Area

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Normal CodeA
Malfunction CodeB
DTC No.DTC Detecting ConditionTrouble Area
C1203/53Engine, drive source and destination variations that are sent from the
engine control ECU do not match the ones of the skid control ECU.ECM

INSPECTION PROCEDURE
HINT:
<003a004b00480051000300380013001400150016001200190015000f0003003800130014001500170012001c001800030052005500030038001300140015001900120019001600030044005500480003005200580057005300580057000300440046004600
520050005300440051004c004800470003005a004c0057004b[ C1210/36 or C1336/39, inspect and
repair the trouble areas indicated by U0123/62, U0124/95 or U0126/63 first.
1.PERFORM ZERO POINT CALIBRATION OF YAW RATE SENSOR AND DECELERATION
SENSOR
a. Perform the zero point calibration of the yaw rate sensor and deceleration sensor (see
CALIBRATION
).
NEXT
2.RECONFIRM DTC
a. Clear the DTCs.
b. Turn the ignition switch to the ON position.
c. Check that the same DTCs are recorded (see DTC CHECK/CLEAR
).
OK: Go to next step
The same DTCs are recorded.
NG: END
HINT:
The DTCs are recorded because zero point calibration has not been completed.
End the procedure since the same DTCs are not recorded after completion of the zero point calibration.
OK: Go to next step
3.CHECK SENSOR INSTALLATION
Check that the yaw rate and deceleration sensor has been installed properly (see
REPLACEMENT
).
OK:
The sensor is tightened to the specified torque.
The sensor is not tilted.
NG: INSTALL YAW RATE SENSOR CORRECTLY
OK: REPLACE YAW RATE SENSOR (SEE REPLACEMENT
)

AUTOMATIC TRANSMISSION DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
CIRCUIT, B+ SHORT CIRCUIT IN ABS MOTOR
RELAY CIRCUIT, SHORT CIRCUIT IN ABS
MOTOR FAIL SAFE RELAY CIRCUIT
DTC C0278/11, C0279/12 OPEN/SHORT CIRCUIT IN ABS SOLENOID
RELAY CIRCUIT
DTC C1201/51 ENGINE CONTROL SYSTEM MALFUNCTION
DTC C1203/53 ECM COMMUNICATION CIRCUIT
MALFUNCTION
DTC C1210/36, C1336/39 ZERO POINT CALIBRATION OF YAW
RATE/DECELERATION SENSOR UNDONE
DTC C1223/43 ABS CONTROL SYSTEM MALFUNCTION
DTC C1231/31 MALFUNCTION IN STEERING ANGLE
SENSOR CIRCUIT
DTC C1232/32, C1234/34, C1243/43, C1244/44,
C1245/45, C1381/97
MALFUNCTION IN DECELERATION/YAW
RATE SENSOR, OPEN OR SHORT IN
DECELERATION SENSOR CIRCUIT,
MALFUNCTION IN POWER SUPPLY VOLTAGE
YAW/DECELERATION SENSOR
DTC C1235/35, C1236/36, C1238/38, C1239/39 FOREIGN MATTER IS ATTACHED ON TIP OF
RIGHT/LEFT FRONT/REAR SENSOR
DTC C1241/41 LOW BATTERY POSITIVE VOLTAGE
DTC C1246/46 MALFUNCTION IN MASTER CYLINDER
PRESSURE SENSOR
DTC C1249/49 OPEN CIRCUIT IN STOP LIGHT SWITCH
CIRCUIT
DTC C1251/51 PUMP MOTOR IS LOCKED/OPEN CIRCUIT IN
PUMP MOTOR GROUND
DTC C1267/67 Brake Pedal Load Sensing Switch
DTCDescription
DTC P0705, P0850 TRANSMISSION RANGE SENSOR CIRCUIT
MALFUNCTION (PRNDL INPUT),
PARK/NEUTRAL SWITCH INPUT CIRCUIT
DTC P0710, P0712, P0713 TRANSMISSION FLUID TEMPERATURE
SENSOR "A" CIRCUIT LOW/HIGH INPUT
DTC P0711 TRANSMISSION FLUID TEMPERATURE
SENSOR "A" PERFORMANCE
DTC P0717 TURBINE SPEED SENSOR CIRCUIT NO
SIGNAL
DTC P0724 BRAKE SWITCH "B" CIRCUIT HIGH
DTC P0729 GEAR 6 INCORRECT RATIO