On-Board Diagnostics

DIAGNOSTIC TROUBLE CODE DIAGNOSIS

ON-BOARD DIAGNOSTICS

The CAN is a communication method which the ECUs use in order to communicate each other.
The CAN-related diagnostic trouble codes will be stored in the following ECUs, which use the CAN communication.

- ETACS-ECU

- ECM

- TCM [CVT, A/T]

- ABS-ECU [vehicles without ASC]

- ASC-ECU [vehicles with ASC]

- AWD-ECU [Electric control AWD]

- AWC-ECU [S-AWC]

- Steering wheel sensor [vehicles with ASC]

- A/C-ECU

- SRS-ECU

- Occupant classification-ECU

- Radio and CD player [vehicles with radio and CD player]

- Radio and CD changer [vehicles with radio and CD changer]

- CAN box unit [vehicles with MMCS]

- Satellite radio tuner [vehicles satellite radio]

- WCM [vehicles without KOS]

- KOS-ECU [vehicles with KOS]

- Combination meter

HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)

Required Special Tools:

- 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





CAUTION:
To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK"
(OFF) position before connecting or disconnecting scan tool MB991958.

1. Ensure that the ignition switch is at the "LOCK" (OFF) position.
2. Start up the personal computer.
3. Connect special tool MB991827 to special tool MB991824 and the personal computer.
4. Connect special tool MB991910 to special tool MB991824.
5. Connect special tool MB991910 to the data link connector.
6. Turn the power switch of special tool MB991824 to the "ON" position.
NOTE:
When special tool MB991824 is energized, special tool MB991824 indicator light will be illuminated in a green color.

7. Start the scan tool system on the personal computer.
NOTE:
Disconnecting scan tool MB991958 is the reverse of the connecting sequence, making sure that the ignition switch is at the "LOCK" (OFF) position.