| Item name | Spare part catalog number | Description |
| A | - | Right hand drive |
| B | - | Left hand drive |
| 1 | - | Battery Junction Block (BJB) |
| 2 | - | Battery |
| 3 | - | Engine Control Module (ECM) |
| 4 | - | Transfer Case Control Module |
The control module is connected to the CAN bus. (local area network of controllers) and controls the operation of the transfer case using messages received via the CAN bus from other control modules on the local network.
When the ignition is turned off, the control module remembers the position of the transfer case electric motor.
The transfer case control module uses the same actuator for range shifting and center differential locking. The module uses actuator position feedback to provide smooth range shifting and gradual differential locking in accordance with current driving conditions. Range shifting can be performed while the vehicle is moving, provided that the transmission is in neutral and the vehicle speed is below the speed required for the desired shift.
Input/output of all signals of the control module is carried out via 3 connectors. The module receives constant supply voltage via a 30 A fuse located in the battery distribution block (BJB) and ignition system voltage via fuse 24 located in the central distribution block (CJB).
To control the synchronization speed, the control module uses several programmed switching maps, resulting in a maximum switching time of approximately 1 s.
If the control module is replaced, the T4 diagnostic tool must be connected to the vehicle and the transfer case control module self-calibration must be performed. These steps must also be performed after replacing the transfer case electric motor assembly.
Default Strategy/Failover Mode
When a fault occurs in the transfer case or the transfer case control module, or when one of the required input signals, such as the vehicle speed signal, fails, the control module records a fault code and responds in a manner that maximizes system functionality under the specific fault conditions. The following fault conditions are possible:
| Malfunctioning condition | System response | Driver Warning |
| Functionality is not reduced | A diagnostic trouble code (DTC) is stored, but system performance is not affected. | Absent |
| Clutch control is locked Temporary overheating | Off-road traction is reduced. | The driveshaft overheating indicator light comes on or a message appears "CENTRE DIFF OVER TEMP REDUCE SPEED" on the message center screen |
| Clutch control is locked Permanent fault | Off-road traction is reduced. | The driveline malfunction indicator lamp comes on or a message appears "CENTRE DIFF FAULT TRACTION REDUCED" on the message center screen |
| Range switching is prohibited | The system prevents the driver from changing ranges | The driveline malfunction indicator lamp comes on or a message appears "TRANSMISSION RANGE CHANGE NOT AVAILABLE" on the message center screen |
| Transfer case stuck in neutral position | Transfer case sticking between high and low ranges, causing wheel drive to lock | The low range indicator light flashes and the message "APPLY HANDBRAKE (PARK BRAKE in the USA and Canada)" The message only appears when it is considered safe or necessary. For example, it is not displayed during normal driving. |
If the driveshaft overheats, once the driveshaft cools down, the clutch control will resume and the warnings will disappear. In this case, no maintenance is required.
If clutch control or range shifting is prohibited due to a permanent fault, the driver should seek technical assistance at the earliest opportunity.
If a fault in the system has caused the transfer case to fail to operate in neutral, the control module will continue to attempt to set the desired range according to its programming or will return to the original range after a specified number of attempts. If this is not possible and the low range lamp continues to flash, the driver should stop the vehicle and attempt to change range again with the vehicle stationary. After a number of unsuccessful attempts, the ignition should be switched off for 30 seconds, then the engine should be started and the range should be attempted again with the vehicle stationary. The driver should seek technical assistance at the earliest opportunity.
[Data taken from the website lrman.ru]
Transfer Case Control Module Connector Pinout Table
Connector 1-C1319
| Contact No. | Description | Login / Logout |
| 1 | Not used | - |
| 2 | Not used | - |
| 3 | CAN bus low level line | Data (input / output) |
| 4 | Range Select Switch - High Level Line | Entrance |
| 5 | Range Select Switch - Low Level Line | Entrance |
| 6 | CAN bus high level line | Data (input / output) |
| 7 | Key lock solenoid | Exit |
| 8 | LED high level line | Exit |
| 9 | LED low line | Exit |
Connector 2-C1854
| Contact No. | Description | Login / Logout |
| 1 | CAN bus low level line | Data (input / output) |
| 2 | Not used | - |
| 3 | Ignition supply | Entrance |
| 4 | CAN bus high level line | Data (input / output) |
| 5 | Weight | - |
| 6 | Constant voltage supply of the battery | Entrance |
Connector 3-C1855
| Contact No. | Description | Login / Logout |
| 1 | Hall sensor signal - A (direction) | Entrance |
| 2 | Hall sensor mass | - |
| 3 | Power supply for Hall sensors | Exit |
| 4 | Not used | - |
| 5 | Temperature sensor | Entrance |
| 6 | Hall sensor signal - B (speed) | Entrance |
| 7 | Selector position sensor mass | - |
| 8 | 5V power supply for position sensor | Exit |
| 9 | Ground of the selector mode selection relay | - |
| 10 | Selector position sensor signal | Entrance |
| 11 | Gearbox Position Sensor X-Axis Signal | Entrance |
| 12 | Power supply for selector mode selection relay | Exit |
| 13 | Gearbox Position Sensor Y-Axis Signal | Entrance |
| 14 | Power supply for the output shaft speed sensor of a manual transmission | Exit |
| 15 | Power supply / mass of the electric motor | Login / Logout |
| 16 | Signal from the output shaft speed sensor of the manual transmission | Entrance |
| 17 | Mass of the output shaft speed sensor of a manual transmission | - |
| 18 | Power supply / mass of the electric motor | Login / Logout |
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