Where is the encoder on a NVG 226?
Where is the encoder on a NVG 226?
The transfer case Motor/Encoder consists of a permanent magnet (PM) DC motor and gear reduction assembly. It is located on the left hand side (drivers side) of the transfer case. When activated it turns the sector shaft of the transfer case (clockwise or counter clockwise) to shift the transfer case.
What are the modes of the NVG 226 transfer case?
The NVG 226 provides five modes, Auto 4WD, 4 HI, 4 LO, 2 HI and Neutral. The Auto 4WD position allows the capability of an active transfer case, which provides the benefits of on-demand torque biasing wet clutch and easy vehicle tuning through software calibrations.
Where is the encoder motor on a GM transfer case?
Access to datastream information for GM’s NVG 246 system makes most problems simple to locate and diagnose, as our case studies demonstrate. These systems also allow bidirectional control for many outputs. The encoder motor (arrow) is mounted on the front of the transfer case and is used to lock it into 4WD.
When to use the transfer case motor lock?
Transfer Case Motor Lock. The transfer case motor lock is used to provide a 2H, 4H, and 4L lock-up feature. When the lock circuit is energized, the transfer case encoder motor is allowed to turn. When the transfer case is placed 2H, 4H, or 4L the motor lock circuit is de-energized and the lock is applied.
How does the transfer case work on the NV 246?
Operation of the motor on the NV 246 requires the release of the motor brake, which is always receiving power through the transfer-case fuse. The module controls the motor brake by grounding the brake through a circuit driver that limits the current.
Access to datastream information for GM’s NVG 246 system makes most problems simple to locate and diagnose, as our case studies demonstrate. These systems also allow bidirectional control for many outputs. The encoder motor (arrow) is mounted on the front of the transfer case and is used to lock it into 4WD.
How does the encoder work on the NV 246?
The encoder grounds each of the four channels in a specific sequence based on the position requested. When the ATCM sees the right values it will turn off the motor and apply the motor brake to keep the motor and linkage aligned in the selected range. Any incorrect voltage sequence to the ATCM will set a diagnostic code.
Do you need shimming for NVG 226 transfer case?
The NVG 226 requires no clutch shimming. the transfer case control module controls for the wear of the clutch and different clutch torque levels. The software learns adapt ready positions, which are for the correct clutch torque.
