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DIAGNOSTIC FUNCTION
 
 
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 M.U.T.-IIISE system on the personal computer.
noteDisconnecting scan tool (M.U.T.-IIISE) is the reverse of the connecting sequence, first 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 "ECPS/4WS".
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 "ECPS/4WS".
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 "ECPS/4WS".
5. Select "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 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.
 
 
 
CHECK OF FREEZE FRAME DATA
 
 
The freeze frame data can be checked by using scan tool (M.U.T.-IIISE).
When detecting the trouble and storing the DTC, the ECU connected to CAN bus line obtains the data when the DTC is confirmed, 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
01OdometerTotal driving distance when the DTC is generatedkm/mile
02Ignition cycleNumber of times the ignition switch is turned "ON" or "LOCK (OFF)" after the past failure transitionNumber of counts is display
04Accumulated minuteCumulative time for current malfunction of DTC min
05Torque sensor voltage1Voltage of the torque sensor 1 when the DTC is generatedV
06Torque sensor voltage2Voltage of the torque sensor 2 when the DTC is generatedV
07Torque sensor power supply voltage1Voltage of torque sensor 1 power supply when the DTC is generatedV
08Torque sensor power supply voltage2Voltage of torque sensor 2 power supply when the DTC is generatedV
09Rotation angle sensor Vx1Voltage of the motor angle sensor Vx1 signal when the DTC is generatedV
10Rotation angle sensor Vx2Voltage of the motor angle sensor Vx2 signal when the DTC is generatedV
11Rotation angle sensor Vy1Voltage of the motor angle sensor Vy1 signal when the DTC is generatedV
12Rotation angle sensor Vy2Voltage of the motor angle sensor Vy2 signal when the DTC is generatedV
13System1 U phase currentCurrent 1 U phase current when the DTC is generatedA
14System1 V phase currentCurrent 1 V phase current when the DTC is generatedA
15System1 W phase currentCurrent 1 W phase current when the DTC is generatedA
16System2 U phase currentCurrent 2 U phase current when the DTC is generatedA
17System2 V phase currentCurrent 2 V phase current when the DTC is generatedA
18System2 W phase currentCurrent 2 W phase current when the DTC is generatedA
19System1 U terminal voltageVoltage 1 U phase voltage when the DTC is generatedV
20System1 V terminal voltageVoltage 1 V phase voltage when the DTC is generatedV
21System1 W terminal voltageVoltage 1 W phase voltage when the DTC is generatedV
22System2 U terminal voltageVoltage 2 U phase voltage when the DTC is generatedV
23System2 V terminal voltageVoltage 2 V phase voltage when the DTC is generatedV
24System2 W terminal voltageVoltage 2 W phase voltage when the DTC is generatedV
25System1 PIG voltageVoltage of the motor (line 1) when the DTC is generatedV
26System2 PIG voltageVoltage of the motor (line 2) when the DTC is generatedV
27IG voltageVoltage of the EPS-ECU when the DTC is generatedV
28Vehicle speedVehicles speed when the DTC is generatedkm/h/mph
29Steering wheel angleSteering angle when the DTC is generateddeg
30Engine speedEngine speed when the DTC is generatedrpm
31Ready condition--
32Steering torqueSteering assist torque when the DTC is generated-
33Motor q-axis detection currentCurrent of motor when the DTC is generatedA
34Motor q-axis request currentIndication current to motor when the DTC is generatedA
35Steering wheel angular velocitySteering angular velocity when the DTC is generateddeg/s
36Thermistor temperatureThermistor temperature when the DTC is generated°C/°F
37Software operating state--
38Control mode--
39Detail diagnostic code --