Attention.
When configuring, it is necessary to read the coupling calibration data from the 4WD control unit before replacing it. Connect the M-MDS to the vehicle and perform vehicle identification before removing the 4WD control unit. The coupling calibration data is temporarily stored in the M-MDS.
If the configuration is not performed after replacing the 4WD control unit, the following complications may occur due to the lack of recording of the coupling calibration data in the 4WD control unit:
- The system will not function properly.
- There may be problems with the performance of the all-wheel drive clutch.
Note:
- The all-wheel drive control unit stores the clutch calibration data before replacement.
- If the calibration data from the all-wheel drive control unit stored before its replacement cannot be read, read the calibration data of the coupling.
1. When replacing the all-wheel drive control unit, perform the configuration.
2. Disconnect the negative battery terminal.
3. Remove the front door sill trim.
4. Remove the front side trim.
5. Disconnect the connector and unscrew the all-wheel drive control unit mounting bolt.
1. Connector
6. Move the all-wheel drive control unit towards the connector and remove it.
7. Installation is carried out in the reverse order of removal.
Note: If the configuration is not performed by reading/writing the coupling calibration data, perform the calibration data reading as described below.
Configuration of the all-wheel drive control unit
Caution: When performing configuration, it is necessary to read the coupling calibration data from the 4WD control unit before replacing it. Connect the M-MDS to the vehicle and perform vehicle identification before removing the 4WD control unit. The coupling calibration data is temporarily stored in the M-MDS.
1. Connect the M-MDS device to the DLC-2 diagnostic connector.
2. After identifying the vehicle, select the following parameter in M-MDS:
- "Module Programming" (programming module)
3. Then select the options from the on-screen menu:
- "Programmable Module installation" (installing a programmable module)
- "4x4" (all wheel drive)
4. Perform the configuration according to the instructions on the screen.
Caution: When performing configuration, the CAN connection between the all-wheel drive control unit and other control units connected via the CAN bus may be temporarily interrupted, with the corresponding fault code appearing. After performing configuration, it is necessary to check for fault codes in the control units connected to the CAN bus and, if detected, delete these codes.
5. Check for fault codes in the control units connected to the CAN bus. If fault codes are detected, delete them. After deleting the codes, complete the procedure, since the configuration is complete. If fault codes are not deleted, search for the fault corresponding to the detected code.
Reading calibration data
1. Connect the M-MDS device to the DLC-2 diagnostic connector.
2. After identifying the vehicle, select the following parameter in M-MDS:
- "Chassis"
3. After that, select the parameters from the on-screen menu:
- "4WD/AWD" (permanent/plug-in all-wheel drive)
- "Coupling Calibration Data writing" (reading coupling calibration data)
4. Perform the calibration data reading of the coupling according to the instructions on the screen.
5. Check for fault codes in the control units connected to the CAN bus. If fault codes are detected, delete them. After deleting the codes, complete the procedure, since the configuration is complete. If fault codes are not deleted, search for the fault corresponding to the detected code.