[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
35 -SERVICE BRAKES > 35C-ACTIVE STABILITY CONTROL SYSTEM (ASC) > TROUBLESHOOTING<ASC-ECU><ASC-ECU> > DIAGNOSIS FUNCTION
DIAGNOSTIC FUNCTION
ASC-ECU has the following functions for easier system checks.
  • Diagnosis code set (Refer to ).
  • Service data output (Refer to ).
  • Actuator test (Refer to ).
  • Freeze frame data output (Refer to ).
All the above items can be diagnosed using M.U.T.-IIISE.
 
 
CHECK OF FREEZE FRAME DATA
The freeze frame data can be checked by using the M.U.T.-IIISE.
 
 
When detecting fault and setting the diagnosis code, the ECU connected to CAN bus line obtains the data before the determination of the diagnosis code and the data when the diagnosis code is determined, and then stores the ECU status of that time. By analysing each data from 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 diagnosis code is generatedkm
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 diagnosis code is generated: OFF/ON-
6Brake TCL controlTraction control operation status (brake control) when the diagnosis code is generated: OFF/ON-
7Engine TCL controlTraction control operation status (engine control) when the diagnosis code is generated: OFF/ON-
8A.S.C. ControlASC control when the diagnosis code is generated: OFF/ON-
9Brake assist controlBrake assist control when the diagnosis code is generated: OFF/ON-
10S-AWC Brake controlAWC control operation status (brake control) when the diagnosis code is generated: OFF/ON-
11Stop lamp switchStop lamp switch condition when the diagnosis code is generated: OFF/ON-
12Pump motorPump motor condition when the diagnosis code is generated: OFF/ON-
13Brake TCL operationTraction control operation status (brake control) when the diagnosis code is generated: Permission/Prohibition-
14A.S.C./TCL off switchASC OFF switch condition when the diagnosis code is generated: OFF/ON-
15Steering angle sensorSteering angle of steering wheel sensor when the diagnosis code is generateddeg
16Yaw rate sensorYaw rate of G and yaw rate sensor when the diagnosis code is generateddeg/s
17Lateral G sensorLateral G of G and yaw rate sensor when the diagnosis code is generatedG
18G sensorLongitudinal G of G and yaw rate sensor when the diagnosis code is generatedG
19Master cylinder pressure sensorMaster cylinder pressure of Master cylinder pressure sensor when the diagnosis code is generatedbar
20Power supply voltageVoltage of power supply when the diagnosis code is generatedV
21FR wheel speed sensorWheel speed (FR) when the diagnosis code is generatedkm/h
22FL wheel speed sensorWheel speed (FL) when the diagnosis code is generatedkm/h
23RR wheel speed sensorWheel speed (RR) when the diagnosis code is generatedkm/h
24RL wheel speed sensorWheel speed (RL) when the diagnosis code is generatedkm/h
 
 
FAIL-SAFE FUNCTIONS
  • When a malfunction is determined by the diagnostic function, ASC-ECU illuminates the brake warning lamp, brake warning display, ABS warning lamp, ABS warning display, ASC warning lamp, ASC warning display, and ASC OFF lamp. At the same time, ASC-ECU prohibits the EBD, ABS, ASC, TCL, brake assist, HSA, ESS and ACC/FCM.
    noteThe brake warning lamp and brake warning display are used as the EBD control warning lamp.
  • When the brake pad temperature (assumed) exceeds the specified value, the ASC OFF lamp flashes (2 Hz).
 
 
Illumination condition of warning lamp and display in case of failure
Diagnosis code No.ItemBrake warning lamp,
brake warning display		ABS warning lamp,
ABS warning display		ASC warning lamp
ASC warning display		ASC OFF lamp
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.OFFOFFONOFF
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 lamp: 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 Stop lamp monitorOFFOFFONOFF
C1802*9ACC ECU failOFFOFFONOFF
C1803*9ACC mode off disagreementOFFOFFONOFF
C1804*9ACC deactivation disagreementOFFOFFONOFF
C1805FCM/LDW/AHB malfunctionOFFOFFONOFF
C1807FCM/LDW/AHB target deceleration signalOFFOFFONOFF
U0100Engine CAN timeoutOFFOFFONON
U0101T/M CAN timeoutOFFOFFONON
U0114*44WD CAN timeoutOFFOFFONON
U0126SAS CAN timeoutOFFOFFONON
U0141ETACS CAN timeoutOFFOFFON *7ON
U0317EPB CAN timeoutOFFOFFOFFOFF
U0401Engine (CAN message)OFFOFFONON
U0404*10AS&G (CAN message)OFFOFFOFFOFF
U0417EPB (CAN message)OFFOFFOFFOFF
U0428SAS (CAN message)OFFOFFONON
U0435*11Implausible AWC dataOFFOFFOFFOFF
U0440*11AWC (CAN message)OFFOFFOFFOFF
U1004*10AS&G CAN timeoutOFFOFFOFFOFF
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 when the ignition switch is turned to ON next time.
  • *3: 2WD.
  • *4: 4WD.
  • *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 or higher and turn left or right when the ignition switch is turned to on next time.
  • *9: Vehicles with ACC.
  • *10: Vehicles with AS&G.
  • *11: Vehicles with S-AWC.
 
 
Under EBD, ABS, ASC, TCL, brake assist, HSA, ESS, ACC, FCM, S-AWC, brake auto hold and emergency brake (ASC) in case of failure
Diagnosis code 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 Stop lamp monitorEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedProhibitedProhibited
C1802*7ACC ECU failEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
C1803*7ACC mode off disagreementEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
C1804*7ACC deactivation disagreementEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
C1805FCM/LDW/AHB malfunctionEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
C1807FCM/LDW/AHB target deceleration signalEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
U0100Engine CAN timeoutEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0101T/M CAN timeoutEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0114*34WD 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
U0404*8AS&G (CAN message)EnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabled
U0417EPB (CAN message)EnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibited*6
U0428SAS (CAN message)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0435*9AWC (CAN message)EnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedEnabledEnabled
U0440*9Implausible AWC dataEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedEnabledEnabled
U1073Bus-offEnabledEnabledProhibitedProhibitedEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
U1004*8AS&G CAN timeoutEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabled
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: 2WD.
  • *3: 4WD.
  • *4: Not prohibited when the brake warning lamp is not illuminated.
  • *5: Not prohibited when the ABS warning lamp is not illuminated.
  • *6: Enabled in some cases.
  • *7: Vehicles with ACC.
  • *8: Vehicles with AS&G.
  • *9: Vehicles with S-AWC.