Range Change Selection Switch
| ITEM | DESCRIPTION |
|---|---|
| 1 | Integrated Control Panel (FCIM) |
| 2 | Range change selection switch |
The range change selection switch is a momentary switch and located in the FCIM .
When the range change selection switch is operated, the FCIM sends a message to the Heating, ventilation, and air conditioning (HVAC) control module. The message is sent on the private Controller Area Network (CAN) bus. The HVAC control module transmits this message to the BCM /GWM . The BCM /GWM transmits this message to the FCIM through the FlaxRay.
A single press of the range change selection switch initiates range change when all the required conditions for range change are met. The range change request is delayed for 1 minute when the vehicle speed or the Transmission Control Switch (TCS) position are out of operating condition. When the request is delayed, a corresponding warning message is displayed in the Instrument Panel Cluster (IPC) message center.
When all the required conditions are met a single press of the range change selection switch initiates range change in the twin speed transfer case.
The range change selection request is delayed for 1 minute when:
- The vehicle speed for range change is above 60 km/h (37 mph).
- The TCS not in the requested position.
While the request is delayed, driver can cancel the request by pressing the range change selection switch.
When the vehicle speed condition or the TCS position condition is not in the requested operating range within 1 minute, the range change request is canceled.
Range change is available only when engine is running.
High/Low range change Light Emitting Diode
The high/low range change LED is connected to the FCIM . The TCCM sends the range change status by a FlexRay to the BCM /GWM . The BCM /GWM transmits this signal to the HVAC control module. The HVAC control module transmits this signal through private CAN bus to the FCIM . The FCIM illuminates the high/low range change LED depending on the range change status from the TCCM .
When the transfer case is in high range, the switch LED is not illuminated.
While range change is in progress, the LED flashes ON until the new range status has been achieved.