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DIAGNOSTIC FUNCTION
 
 
ASC-ECU has the following functions for easier system checks.
  • DTC set (Refer to ).
  • Service data output (Refer to ).
  • Actuator test (Refer to ).
  • Freeze frame data output.
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 storing 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 power supply mode of the electric motor switch is turned ON or OFF after the past failure transitionNumber of counts is displayed.
5Power supply voltageVoltage of power supply when the DTC is generatedV
8Lateral G sensorLateral G of G and yaw rate sensor when the DTC is generatedG
9G sensorLongitudinal G of G and yaw rate sensor when the DTC is generatedG
10Master cylinder pressureMaster cylinder pressure of Master cylinder pressure sensor when the DTC is generatedbar
11Steering angleSteering angle of steering wheel sensor when the DTC is generateddeg
12Yaw rate sensorYaw rate of G and yaw rate sensor when the DTC is generateddeg/s
13Stop light switchStop light switch condition when the DTC is generated: OFF/ON-
21Pump motorPump motor condition when the DTC is generated: OFF/ON-
28ASC/TCL off switchASC OFF switch condition when the DTC is generated: OFF/ON-
301ABS controlABS control when the DTC is generated: OFF/ON-
302Brake TCL controlTraction control operation status (brake control) when the DTC is generated: OFF/ON-
303Engine TCL controlTraction control operation status (engine control) when the DTC is generated: OFF/ON-
304ASC controlASC control when the DTC is generated: OFF/ON-
305Brake TCL operationTraction control operation status (brake control) status when the DTC is generated: Permission/Prohibition-
306Brake assist controlBrake assist control when the DTC is generated: OFF/ON-
401FL wheel speed sensorWheel speed (FL) when the DTC is generatedmph/km/h
402FR wheel speed sensorWheel speed (FR) when the DTC is generatedmph/km/h
403RL wheel speed sensorWheel speed (RL) when the DTC is generatedmph/km/h
404RR wheel speed sensorWheel speed (RR) 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, ESS 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.OFFOFFONOFF
Other than aboveOFFONONON
C121EBrake fluid pressure sensorOFFONONON
C1000Brake Switch (stuck)OFFOFFONON
C123BSystem control too longOFFOFFON*6ON*6
C2200ECU internal errorON*3ON*4ONON
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 voltageOFFONONON
C1242Longitudinal G sensor signalAbnormality in longitudinal G-sensor output signalOFFON*2ON*2ON*2
C123CSensor cluster malfunctionAbnormality in lateral G & yaw rate output valueOFFOFFON*6ON*6
C1392Incomplete learn (Longitudinal G)ONONONON
C1393Incomplete learn neutral(Lateral G)ONONONON
C2204Sensor cluster internal errorOFFON*4ON*6ON*6
C1219Steering angle sensor signalOFFOFFON*6ON*6
C121ASteering angle sensor initializationSteering wheel sensor neutral point not learnedONONONON
C2205Steering angle sensor internal errorOFFOFFONON
C2002Valve calibration not completedOFFONONON
C1608EEPROM failOFFOFFOFFOFF
C1707Implausible coding dataOFFON*5ONON*5
C1800*7Accele./Decele. monitorOFFOFFONOFF
C1801*7ACC/FCM Auto Stoplight monitorOFFOFFONOFF
C1802*7ACC ECU failOFFOFFONOFF
C1803*7ACC mode off disagreementOFFOFFONOFF
C1804*7ACC deactivation disagreementOFFOFFONOFF
C1805FCM/LDW/AHB malfunctionOFFOFFONOFF
C1807FCM/LDW/AHB target deceleration signalOFFOFFONOFF
U0126Steering angle sensor CAN timeoutOFFOFFONON
U0141ETACS CAN timeoutOFFOFFON*7ON
U0317EPB CAN timeoutOFFOFFOFFOFF
U0417EPB (CAN message)OFFOFFOFFOFF
U0428Steering angle sensor (CAN message)OFFOFFONON
U1010PHEV ECU Parity/Toggle bit errorOFFOFFON*5ON*5
U1011*7ACC/FCM CAN signal errorOFFOFFONOFF
U1012Implausible data from PHEV ECUOFFOFFOFFOFF
U1013*7Driver demand torque signalOFFOFFONOFF
U1015FCM/LDW/AHB Parity/Toggle bit errorOFFOFFONOFF
U1073Bus-offOFFOFFONON
U110APHEV-ECU CAN timeoutOFFOFFON*5ON*5
U1195Coding not completedOFFONONON
U1197Coding data unavailableOFFONONON
U15A0*7ACC/FCM 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 power supply mode of the electric motor switch is turned to ON next time.
  • *3: Does not illuminate when there is no effect to the EBD function.
  • *4: Does not illuminate when there is no effect to the ABS function.
  • *5: May not illuminate in some trouble causes.
  • *6: Stays on until the vehicle speed 20 km/h or higher and turn left or right when the power supply mode of the electric motor switch is turned to on next time.
  • *7: 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
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*2Prohibited*3ProhibitedProhibitedProhibited*3ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
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)EnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1242Longitudinal G sensor signal (Abnormality in longitudinal G-sensor output signal)EnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C123CSensor cluster malfunction (Abnormality in lateral G & yaw rate output value)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C1392Incomplete learn (Longitudinal G)EnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1393Incomplete learn neutral(Lateral G)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2204Sensor cluster internal errorEnabledProhibited*4ProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1219Steering angle sensor signalEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C121ASteering angle sensor initialization (Steering wheel sensor neutral point not learned)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2205Steering angle sensor internal errorEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
C2002Valve calibration not completedEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
C1608EEPROM failEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabled
C1707Implausible coding dataEnabledProhibited*4Prohibited*4Prohibited*4Prohibited*4ProhibitedProhibited*4Prohibited*4Prohibited*4Prohibited*4Prohibited*4Prohibited*4
C1800*5Accele./Decele. monitorEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedEnabledProhibited
C1801*5ACC/FCM Auto Stoplight monitorEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibitedProhibitedProhibitedProhibited
C1802*5ACC ECU failEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
C1803*5ACC mode off disagreementEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
C1804*5ACC deactivation disagreementEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
C1805FCM/LDW/AHB malfunctionEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
C1807FCM/LDW/AHB target deceleration signalEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
U0126Steering angle sensor CAN timeoutEnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U0141ETACS CAN timeoutEnabledEnabledProhibited*4Prohibited*4Prohibited*4Prohibited*4Prohibited*4Prohibited*4Prohibited*4Prohibited*4Prohibited*4Prohibited*4
U0317EPB CAN timeoutEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibited
U0417EPB (CAN message)EnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedProhibited*4
U0428Steering angle sensor (CAN message)EnabledEnabledProhibitedProhibitedEnabledProhibitedEnabledProhibitedProhibitedProhibitedProhibitedEnabled
U1010PHEV ECU Parity/Toggle bit errorEnabledEnabledProhibited*4Prohibited*4EnabledProhibited*4EnabledProhibited*4Prohibited*4Prohibited*4Prohibited*4Enabled
U1012Implausible data from PHEV ECUEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabled
U1073Bus-offEnabledEnabledProhibitedProhibitedEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
U1011*5ACC CAN signal errorEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
U1013*5Driver demand torque signalEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
U1015FCM/LDW/AHB Parity/Toggle bit errorEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
U110APHEV-ECU CAN timeoutEnabledEnabledProhibited*4Prohibited*4EnabledProhibited*4EnabledProhibited*4Prohibited*4Prohibited*4Prohibited*4Enabled
U1195Coding not completedEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
U1197Coding data unavailableEnabledProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibitedProhibited
U15A0*5ACC ECU CAN timeoutEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabledEnabled
U15A5FCM/LDW/AHB CAN timeoutEnabledEnabledEnabledEnabledEnabledEnabledEnabledEnabledProhibitedEnabledEnabledEnabled
note
  • *1: Prohibited when two or more wheels are faulty.
  • *2: Not prohibited when the brake warning light is not illuminated.
  • *3: Not prohibited when the ABS warning light is not illuminated.
  • *4: Enabled in some cases.
  • *5: 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 power supply mode of the electric motor switch has been turned to the OFF, 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
  • MB991958: Scan Tool (M.U.T.-III Sub Assembly)
    • MB991824: Vehicles Communication Interface (V.C.I.)
    • MB991827: M.U.T.-III USB Cable
    • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
cautionTo prevent damage to scan tool (M.U.T.-IIISE), always turn off the power supply mode of the electric motor switch before connecting or disconnecting scan tool (M.U.T.-IIISE).
1. Ensure that the power supply mode of the electric motor switch should be turned off.
2. Start up the personal computer.
3. Connect special tool MB992747/M992748 or special tool MB991827 to special tool MB992744 or special tool MB991824 and the personal computer.
4. Connect special tool MB992745 or special tool MB991910 to special tool MB992744 or special tool MB991824.
5. Connect special tool MB992745 or special tool MB991910 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. Turn the power switch of special tool MB991824 to the "ON" position. <When using the special tool MB991824>
noteWhen special tool MB991824 is energized, special tool MB991824 indicator light will be illuminated in a green color.
7. Start the M.U.T.-III system on the personal computer.
noteDisconnecting scan tool (M.U.T.-IIISE) is the reverse of the connecting sequence, making sure that the power supply mode of the electric motor switch should be turned off.
 
 
 
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
  • MB991958: Scan Tool (M.U.T.-III Sub Assembly)
    • MB991824: Vehicles Communication Interface (V.C.I.)
    • MB991827: M.U.T.-III USB Cable
    • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
noteIf the 12V Starter 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 on the power supply mode of the electric motor switch.
3. Select "STV".
4. Select "ABS/ASC/ASTC/WSS".
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
  • MB991958: Scan Tool (M.U.T.-III Sub Assembly)
    • MB991824: Vehicle Communication Interface (V.C.I.)
    • MB991827: M.U.T.-III USB Cable
    • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
1. Connect scan tool (M.U.T.-IIISE) to the data link connector.
2. Turn on the power supply mode of the electric motor switch.
3. Select "STV".
4. Select "ABS/ASC/ASTC/WSS".
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
  • MB991958: Scan Tool (M.U.T.-III Sub Assembly)
    • MB991824: Vehicle Communication Interface (V.C.I.)
    • MB991827: M.U.T.-III USB Cable
    • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
1. Connect scan tool (M.U.T.-IIISE) to the data link connector.
2. Turn on the power supply mode of the electric motor switch.
3. Select "STV".
4. Select "ABS/ASC/ASTC/WSS".
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
  • MB991958: Scan Tool (M.U.T.-III Sub Assembly)
    • MB991824: Vehicles Communication Interface (V.C.I.)
    • MB991827: M.U.T.-III USB Cable
    • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
1. Connect scan tool (M.U.T.-IIISE) to the data link connector.
2. Turn on the power supply mode of the electric motor switch.
3. Select "CAN bus diagnosis" from the system select screen.
4. When the optional equipment screen is displayed, choose the one which the vehicle is fitted with, and then select the "OK" button.