4x4 Low And 4x4 High Indicators (Low-Level IPC Only)

For the Electronic Shift On the Fly (ESOF) 4WD system, the IPC receives the 4x4 low indicator request and 4x4 high indicator request messages from the GWM over the HS-CAN3. The GWM receives the 4x4 low indicator request and 4x4 high indicator request messages from the TCCM over the HS-CAN2.

For the Manual Shift-On-Stop (MSOS) 4WD system, the IPC receives the 4X4 high and 4X4 low input hardwired from the 4X4 high/low indicator switch (mode indication switch). When 4X4 high is selected, the 4X4 high/low indicator switch provides a ground on the 4X4 high input circuit. When 4X4 low is selected, the 4X4 high/low indicator switch provides a ground on both the 4X4 low input circuit and the 4X4 high input circuit. The IPC monitors the 4X4 high and 4X4 low inputs and when the applicable grounding is detected, the IPC turns on the appropriate 4X4 indicator.