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DIAGNOSTIC FUNCTION
ASC-ECU has the following functions for easier system checks.
All the above items can be diagnosed using scan tool (M.U.T.-IIISE).
 
 
CHECK OF FREEZE FRAME DATA
The freeze frame data can be checked by using the scan tool (M.U.T.-IIISE).
 
 
When detecting fault and setting the DTC, the ECU connected to CAN bus line obtains the data before the determination of the DTC and the data when the DTC is determined, and then stores the ECU status of that time. By analyzing each data from scan tool (M.U.T.-IIISE), the troubleshooting can be performed more efficiently. The displayed items are as the table below.
Display item list
Item No.Item nameData itemUnit
1OdometerTotal driving distance after the DTC is generatedmile/km
2Ignition cycleNumber of times the ignition switch is turned "ON" or "LOCK (OFF)" after the past failure transitionNumber of counts is displayed.
5ABS controlABS control when the DTC is generated: OFF/ON-
6Brake TCL controlTraction control operation status (brake control) when the DTC is generated: OFF/ON-
7Engine TCL controlTraction control operation status (engine control) when the DTC is generated: OFF/ON-
8A.S.C. ControlASC control when the DTC is generated: OFF/ON-
9Brake assist controlBrake assist control when the DTC is generated: OFF/ON-
10S-AWC Brake controlAWC control operation status (brake control) when the DTC is generated: OFF/ON-
11Stoplight switchStoplight switch condition when the DTC is generated: OFF/ON-
12Pump motorPump motor condition when the DTC is generated: OFF/ON-
13Brake TCL operationTraction control operation status (brake control) when the DTC is generated: Permission/Prohibition-
14A.S.C./TCL off switchASC OFF switch condition when the DTC is generated: OFF/ON-
15Steering angle sensorSteering angle of steering wheel sensor when the DTC is generateddeg
16Yaw rate sensorYaw rate of G and yaw rate sensor when the DTC is generateddeg/s
17Lateral G sensorLateral G of G and yaw rate sensor when the DTC is generatedG
18G sensorLongitudinal G of G and yaw rate sensor when the DTC is generatedG
19Master cylinder pressure sensorMaster cylinder pressure of Master cylinder pressure sensor when the DTC is generatedbar
20Power supply voltageVoltage of power supply when the DTC is generatedV
21FR wheel speed sensorWheel speed (FR) when the DTC is generatedmph/km/h
22FL wheel speed sensorWheel speed (FL) when the DTC is generatedmph/km/h
23RR wheel speed sensorWheel speed (RR) when the DTC is generatedmph/km/h
24RL wheel speed sensorWheel speed (RL) when the DTC is generatedmph/km/h
 
 
FAIL-SAFE FUNCTIONS
  • When a malfunction is determined by the diagnostic function, ASC-ECU illuminates the brake warning light, brake warning display, ABS warning light, ABS warning display, ASC warning light, ASC warning display, and ASC OFF light. At the same time, ASC-ECU prohibits the EBD, ABS, ASC, TCL, brake assist, HSA and ACC/FCM.
    noteThe brake warning light and brake warning display are used as the EBD control warning light.
  • When the brake pad temperature (assumed) exceeds the specified value, the ASC OFF light flashes (2 Hz).
 
 
Illumination condition of warning light and display in case of failure
DTC No.ItemBrake warning light,
brake warning display		ABS warning light,
ABS warning display		ASC warning light
ASC warning display		ASC OFF light
C100AFL wheel speed sensor circuitOFF*1ON ONON
C1015FR wheel speed sensor circuit
C1020RL wheel speed sensor circuit
C102BRR wheel speed sensor circuit
C1011FL wheel speed sensor signalOFF*1ON *2ON*2ON*2
C101CFR wheel speed sensor signal
C1027RL wheel speed sensor signal
C1032RR wheel speed sensor signal
C1014FL wheel speed sensor performanceOFF*1ON *2ON*2ON*2
C101FFR wheel speed sensor performance
C102ARL wheel speed sensor performance
C1035RR wheel speed sensor performance
C1041FL wheel speed tone performanceOFF*1ON *2ON*2ON*2
C1042FR wheel speed tone performance
C1043RL wheel speed tone performance
C1044RR wheel speed tone performance
C1046FL wheel speed sensor phaseOFF*1ON *2ON*2ON*2
C1047FR wheel speed sensor phase
C1048RL wheel speed sensor phase
C1049RR wheel speed sensor phase
C104BFL inlet valveONONONON
C104FFR inlet valve
C1053RL inlet valve
C1057RR inlet valve
C105FFL outlet valveONONONON
C1063FR outlet valve
C1067RL outlet valve
C105BRR outlet valve
C1200FL-RR cut valveONONONON
C1204FR-RL cut valve
C1208FL-RR suction valve
C120CFR-RL suction valve
C2104Valve power supply circuitONONONON
C1073Motor drive circuitOFFON *2ON*2ON*2
C2116Pump motor voltage lowOFFON *2ON*2ON*2
C121DBrake fluid pressure sensor circuitOnly the hydraulic brake assist system is defective.OFFOFFONON
Other than aboveOFFONONON
C121EBrake fluid pressure sensorOFFONONON
C1000Brake SW (stuck)OFFOFFONON
C123BSystem control too longOFFOFFON*8ON*8
C2200ECU internal errorON*5ON*6ONON
C2101Power supply high voltage18.0 ± 1.0 V or moreONONONON
C1395Incomplete Brake fluid fillingOFF
  • ABS warning light: Flashing (2 Hz)
  • ABS warning display: ON
OFFOFF
C121CTorque request signal rejectionOFFOFFONON
C2206Re-execution of variant codingOFFONONON
C1210Longitudinal G sensor input circuitAbnormality in longitudinal G-sensor output voltageOFFOFF*3, ON*4ONOFF*3, ON*4
C1242Longitudinal G sensor signalAbnormality in longitudinal G-sensor output signalOFFOFF*3, ON*2*4ON*2OFF*3, ON*2*4
C123CSensor cluster malfunctionAbnormality in lateral G & yaw rate output valueOFFOFFON*8ON*8
C1392Incomplete learn (Longitudinal G)ONONONON
C1393Incomplete learn neutral(Lateral G)ONONONON
C2204Sensor cluster internal errorOFF
  • OFF*3
  • ON*4, 6
ON*8ON*8
C1219Steering angle sensor signalOFFOFFON*8ON*8
C121ASAS initializationSteering wheel sensor neutral point not learnedONONONON
C2205SAS internal errorOFFOFFONON
C2002Valve calibration not completedOFFONONON
C1608EEPROM failOFFOFFOFFOFF
C1707Implausible coding dataOFFON*7ONON*7
C1800*9Acceleration/Deceleration monitorOFFOFFONOFF
C1801*9Auto Stoplight monitorOFFOFFONOFF
C1802*9ACC ECU failOFFOFFONOFF
C1803*9ACC mode off disagreementOFFOFFONOFF
C1804*9ACC deactivation disagreementOFFOFFONOFF
C1805FCM/LDW/AHB malfunctionOFFOFFONOFF
C1806ACC/FCM target deceleration signalOFFOFFONOFF
C1807FCM/LDW/AHB target deceleration signalOFFOFFONOFF
U0100Engine CAN timeoutOFFOFFONON
U0101T/M CAN timeoutOFFOFFONON
U0114*4AWD CAN timeoutOFFOFFONON
U0126SAS CAN timeoutOFFOFFONON
U0141ETACS CAN timeoutOFFOFFON *7ON
U0317EPB CAN timeoutOFFOFFOFFOFF
U0401Engine (CAN message)OFFOFFONON
U0417EPB (CAN message)OFFOFFOFFOFF
U0428SAS (CAN message)OFFOFFONON
U0435*4Implausible AWC dataOFFOFFOFFOFF
U0440*4AWC (CAN message)OFFOFFOFFOFF
U1011*9ACC CAN signal errorOFFOFFONOFF
U1013*9Driver demand torque signalOFFOFFONOFF
U1015FCM/LDW/AHB Parity/Toggle bit errorOFFOFFONOFF
U1073Bus-offOFFOFFONON
U1195Coding not completedOFFONONON
U1197Coding data unavailableOFFONONON
U15A0*9ACC ECU CAN timeoutOFFOFFONOFF
U15A5FCM/LDW/AHB CAN timeoutOFFOFFONOFF
note
  • *1: Turns on when two or more wheels are faulty.
  • *2: Stays on until the vehicle speed reaches 10 km/h (6.2 mph) when the ignition switch is turned to ON next time.
  • *3: FWD.
  • *4: AWD.
  • *5: Does not illuminate when there is no effect to the EBD function.
  • *6: Does not illuminate when there is no effect to the ABS function.
  • *7: May not illuminate in some trouble causes.
  • *8: Stays on until the vehicle speed 20 km/h (12 mph) or higher and turn left or right when the ignition switch is turned to on next time.
  • *9: Vehicles with ACC.
 
 
Under EBD, ABS, ASC, TCL, brake assist, HSA, ESS, ACC, FCM, S-AWC, brake auto hold and emergency brake (ASC) in case of failure <18 Model year>
DTC No.ItemEBDABSASCTCLBrake assistHSAESSACCFCMS-AWCBrake auto holdEmergency brake (ASC)
C100AFL wheel speed sensor circuitEnabled*1ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1015FR wheel speed sensor circuit
C1020RL wheel speed sensor circuit
C102BRR wheel speed sensor circuit
C1011FL wheel speed sensor signalEnabled*1ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C101CFR wheel speed sensor signal
C1027RL wheel speed sensor signal
C1032RR wheel speed sensor signal
C1014FL wheel speed sensor performanceEnabled*1ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C101FFR wheel speed sensor performance
C102ARL wheel speed sensor performance
C1035RR wheel speed sensor performance
C1041FL wheel speed tone performanceEnabled*1ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1042FR wheel speed tone performance
C1043RL wheel speed tone performance
C1044RR wheel speed tone performance
C1046FL wheel speed sensor phaseEnabled*1ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1047FR wheel speed sensor phase
C1048RL wheel speed sensor phase
C1049RR wheel speed sensor phase
C104BFL inlet valveProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C104FFR inlet valve
C1053RL inlet valve
C1057RR inlet valve
C105FFL outlet valveProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1063FR outlet valve
C1067RL outlet valve
C105BRR outlet valve
C1200FL-RR cut valveProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1204FR-RL cut valve
C1208FL-RR suction valve
C120CFR-RL suction valve
C2104Valve power supply circuitProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1073Motor drive circuitEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C2116Pump motor voltage lowEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C121DBrake fluid pressure sensor circuit (Only the brake assist is defective.)EnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabledEnabledEnabledEnabled
(Other than above)EnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C121EBrake fluid pressure sensorEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1000Brake SW (stuck)EnabledEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C123BSystem control too longEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2200ECU internal errorProhibited*4Prohibited*5ProhibitedProhibitedProhibited*5ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C2101Power supply high voltage (18.0 ± 1.0 V or more)ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1395Incomplete Brake fluid fillingEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabled
C121CTorque request signal deniedEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2206Re-execution of variant codingEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1210Longitudinal G sensor input circuit (Abnormality in longitudinal G-sensor output voltage)EnabledEnabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedEnabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedProhibitedEnabled*2, Prohibited*3
C1242Longitudinal G sensor signal (Abnormality in longitudinal G-sensor output signal)EnabledEnabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedEnabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedProhibitedEnabled*2, Prohibited*3
C123CSensor cluster malfunction (Abnormality in lateral G & yaw rate output value)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C1392Incomplete learn (Longitudinal G)EnabledEnabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedEnabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedProhibitedEnabled*2, Prohibited*3
C1393Incomplete learn neutral(Lateral G)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2204Sensor cluster internal errorEnabledEnabled*2, Prohibited*3, 6Enabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedEnabled*2, Prohibited*3ProhibitedProhibitedProhibitedProhibitedEnabled*2, Prohibited*3
C1219Steering angle sensor signalEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C121ASAS initialization (Steering wheel sensor neutral point not learned)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2205SAS internal errorEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2002Valve calibration not completedEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1608EEPROM failEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabled
C1707Implausible coding dataEnabledProhibited*6Prohibited*6Prohibited*6Prohibited*6ProhibitedProhibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6
C1800*7Acceleration/Deceleration monitorEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedEnabledProhibited
C1801*7Auto Stoplight monitorEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedProhibitedProhibited
C1802*7ACC ECU failEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
C1803*7ACC mode off disagreementEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
C1804*7ACC deactivation disagreementEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
C1805FCM/LDW/AHB malfunctionEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
C1806ACC/FCM target deceleration signal EnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
C1807FCM/LDW/AHB target deceleration signalEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
U0100Engine CAN timeoutEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0101T/M CAN timeoutEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0114*3AWD CAN timeoutEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0126SAS CAN timeoutEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0141ETACS CAN timeoutEnabledEnabledProhibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6
U0317EPB CAN timeoutEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibited
U0401Engine (CAN message)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0417EPB (CAN message)EnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibited*6
U0428SAS (CAN message)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0435*3AWC (CAN message)EnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedEnabledEnabled
U0440*3Implausible AWC dataEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedEnabledEnabled
U1073Bus-offEnabledEnabledProhibitedProhibitedEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
U1011*7ACC CAN signal errorEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
U1013*7Driver demand torque signalEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
U1015FCM/LDW/AHB Parity/Toggle bit errorEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
U1195Coding not completedEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
U1197Coding data unavailableEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
U15A0*7ACC ECU CAN timeoutEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
U15A5FCM/LDW/AHB CAN timeoutEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
note
  • *1: Prohibited when two or more wheels are faulty.
  • *2: FWD.
  • *3: AWD.
  • *4: Not prohibited when the brake warning light is not illuminated.
  • *5: Not prohibited when the ABS warning light is not illuminated.
  • *6: Enabled in some cases.
  • *7: Vehicles with ACC.
 
 
Under EBD, ABS, ASC, TCL, FWD AYC brake control, brake assist, HSA, ESS, ACC, FCM, S-AWC, brake auto hold and emergency brake (ASC) in case of failure <From 19 Model year>
DTC No.ItemEBDABSASC, TCLFWD AYC brake controlBrake assistHSAESSACCFCMS-AWCBrake auto holdEmergency brake (ASC)
C100AFL wheel speed sensor circuitEnabled*1ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1015FR wheel speed sensor circuit
C1020RL wheel speed sensor circuit
C102BRR wheel speed sensor circuit
C1011FL wheel speed sensor signalEnabled*1ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C101CFR wheel speed sensor signal
C1027RL wheel speed sensor signal
C1032RR wheel speed sensor signal
C1014FL wheel speed sensor performanceEnabled*1ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C101FFR wheel speed sensor performance
C102ARL wheel speed sensor performance
C1035RR wheel speed sensor performance
C1041FL wheel speed tone performanceEnabled*1ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1042FR wheel speed tone performance
C1043RL wheel speed tone performance
C1044RR wheel speed tone performance
C1046FL wheel speed sensor phaseEnabled*1ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1047FR wheel speed sensor phase
C1048RL wheel speed sensor phase
C1049RR wheel speed sensor phase
C104BFL inlet valveProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C104FFR inlet valve
C1053RL inlet valve
C1057RR inlet valve
C105FFL outlet valveProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1063FR outlet valve
C1067RL outlet valve
C105BRR outlet valve
C1200FL-RR cut valveProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1204FR-RL cut valve
C1208FL-RR suction valve
C120CFR-RL suction valve
C2104Valve power supply circuitProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1073Motor drive circuitEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C2116Pump motor voltage lowEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C121DBrake fluid pressure sensor circuit (Only the brake assist is defective.)EnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabledEnabledEnabledEnabled
(Other than above)EnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C121EBrake fluid pressure sensorEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1000Brake SW (stuck)EnabledEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C123BSystem control too longEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2200ECU internal errorProhibited*4Prohibited*5ProhibitedProhibitedProhibited*5ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C2101Power supply high voltage (18.0 ± 1.0 V or more)ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1395Incomplete Brake fluid fillingEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabled
C121CTorque request signal deniedEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2206Re-execution of variant codingEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1210Longitudinal G sensor input circuit (Abnormality in longitudinal G-sensor output voltage)EnabledEnabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedEnabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedProhibitedEnabled*2, Prohibited*3
C1242Longitudinal G sensor signal (Abnormality in longitudinal G-sensor output signal)EnabledEnabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedEnabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedProhibitedEnabled*2, Prohibited*3
C123CSensor cluster malfunction (Abnormality in lateral G & yaw rate output value)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C1392Incomplete learn (Longitudinal G)EnabledEnabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedEnabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedProhibitedEnabled*2, Prohibited*3
C1393Incomplete learn neutral(Lateral G)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2204Sensor cluster internal errorEnabledEnabled*2, Prohibited*3, 6Enabled*2, Prohibited*3Enabled*2, Prohibited*3Enabled*2, Prohibited*3ProhibitedEnabled*2, Prohibited*3ProhibitedProhibitedProhibitedProhibitedEnabled*2, Prohibited*3
C1219Steering angle sensor signalEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C121ASAS initialization (Steering wheel sensor neutral point not learned)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2205SAS internal errorEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2002Valve calibration not completedEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1608EEPROM failEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabled
C1707Implausible coding dataEnabledProhibited*6Prohibited*6Prohibited*6Prohibited*6ProhibitedProhibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6
C1800*7Acceleration/Deceleration monitorEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedEnabledProhibited
C1801*7Auto Stoplight monitorEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedProhibitedProhibited
C1802*7ACC ECU failEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
C1803*7ACC mode off disagreementEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
C1804*7ACC deactivation disagreementEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
C1805FCM/LDW/AHB malfunctionEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
C1806ACC/FCM target deceleration signalEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
C1807FCM/LDW/AHB target deceleration signalEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
U0100Engine CAN timeoutEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0101T/M CAN timeoutEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0114*3AWD CAN timeoutEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0126SAS CAN timeoutEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0141ETACS CAN timeoutEnabledEnabledProhibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6Prohibited*6
U0317EPB CAN timeoutEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibited
U0401Engine (CAN message)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0417EPB (CAN message)EnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibited*6
U0428SAS (CAN message)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0435*3AWC (CAN message)EnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedEnabledEnabled
U0440*3Implausible AWC dataEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedEnabledEnabled
U1073Bus-offEnabledEnabledProhibitedProhibitedEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
U1011*7ACC CAN signal errorEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
U1013*7Driver demand torque signalEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
U1015FCM/LDW/AHB Parity/Toggle bit errorEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
U1195Coding not completedEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
U1197Coding data unavailableEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
U15A0*7ACC ECU CAN timeoutEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
U15A5FCM/LDW/AHB CAN timeoutEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
note
  • *1: Prohibited when two or more wheels are faulty.
  • *2: FWD.
  • *3: AWD.
  • *4: Not prohibited when the brake warning light is not illuminated.
  • *5: Not prohibited when the ABS warning light is not illuminated.
  • *6: Enabled in some cases.
  • *7: Vehicles with ACC.
 
 
ON-BOARD DIAGNOSTICS
If the ASC-ECU detects any problem in the CAN communication line or the ECUs, which the ASC-ECU is communicating with, it sets a diagnostic trouble code. The DTCs can be confirmed by connecting scan tool (M.U.T.-IIISE) The set DTCs are not erased even after the ignition switch has been turned to the LOCK (OFF) position, or the battery has been disconnected. The DTCs can be erased by operating scan tool (M.U.T.-IIISE).
 
 
 
HOW TO CONNECT THE SCAN TOOL (M.U.T.-IIISE)
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-IIISE).
1. Ensure that the ignition switch is at the "LOCK" (OFF) position.
2. Start up the personal computer.
3. Connect special tool MB992747/M992748 to special tool MB992744 and the personal computer.
4. Connect special tool MB992745 to special tool MB992744.
5. Connect special tool MB992745 to the data link connector.
noteWhen the special tool MB992745 is connected to the data link connector, the special tool MB992744 indicator light will be illuminated in a green color.
6. Start the scan tool (M.U.T.-IIISE) system on the personal computer.
noteDisconnecting scan tool (M.U.T.-IIISE) is the reverse of the connecting sequence, making sure that the ignition switch is at the "LOCK" (OFF) position.
 
 
 
HOW TO READ AND ERASE DIAGNOSTIC TROUBLE CODES
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
noteIf the battery voltage is low, diagnostic trouble codes will not be set. Check the battery if scan tool (M.U.T.-IIISE) does not display.
1. Connect scan tool (M.U.T.-IIISE) to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "STV".
4. Select "ABS/ASC/ASTC/WSS" from "System List," and press the "OK" button.
5. Select "Diagnostic Trouble Code" to read the DTC.
6. If a DTC is set, it is shown.
7. Choose "Erase DTCs" to erase the DTC.
 
 
 
HOW TO READ DATA LIST
Required Special Tools:
  • MB992744: Vehicle communication interface-Line (V.C.I.-Line)
  • MB992745: V.C.I.-Line main harness A (for vehicle with CAN communication)
  • MB992747: V.C.I.-Line USB cable short
  • MB992748: V.C.I.-Line USB cable long
1. Connect scan tool (M.U.T.-IIISE) to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "STV".
4. Select "ABS/ASC/ASTC/WSS" from "System List," and press the "OK" button.
5. Select "Data List."
6. Choose an appropriate item and select the "OK" button.
 
 
 
HOW TO PERFORM ACTUATOR TEST
Required Special Tools:
  • MB992744: Vehicle communication interface-Line (V.C.I.-Line)
  • MB992745: V.C.I.-Line main harness A (for vehicle with CAN communication)
  • MB992747: V.C.I.-Line USB cable short
  • MB992748: V.C.I.-Line USB cable long
1. Connect scan tool (M.U.T.-IIISE) to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "STV".
4. Select "ABS/ASC/ASTC/WSS" from "System List," and press the "OK" button.
5. Choose "Actuator Test".
6. Choose an appropriate item and select the "OK" button.
 
 
 
HOW TO DIAGNOSE THE CAN BUS LINES
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
1. Connect scan tool (M.U.T.-IIISE) to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "CAN bus diagnosis" from the start-up screen.
4. When the optional equipment screen is displayed, choose the one which the vehicle is fitted with, and then select the "OK" button.