Pinpoint Test B : A Virtual Gauge (AWD (All-Wheel Drive), Tachometer Or Temperature), Is Inoperative: Notes

A Virtual Gauge (AWD, Tachometer Or Temperature), Is Inoperative

Normal Operation and Fault Conditions

See Accessory Power Gauge, Brake Coach Gauge, Consumption Gauge, High Voltage Battery Gauge, Integrated Power Gauge, Split Power Gauge and Tachometer. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description

AWD Gauge

If the AWD data or vehicle speed messages are missing for 5 seconds or less or if the IPC receives invalid torque data for 5 seconds or less, the IPC defaults the display fill area in front of the front wheels and behind the rear wheels to the last setting based upon that last message received.
If the IPC does not receive the AWD data or vehicle speed messages for more than 5 seconds, the IPC defaults the display fill area in front of the front wheels and behind the rear wheels off.

Tachometer

If the engine rpm data message is missing for less than 5 seconds, the IPC defaults the tachometer to the last indication state, based upon the last message received.
If the engine rpm data message is missing for 5 seconds or longer, the IPC defaults the tachometer to 0 rpm.

Temperature Gauge

If the engine coolant temperature data, engine overheat indication request, heater core temperature or engine off temperature data messages are missing for less than 5 seconds, the IPC defaults the temperature gauge to the last indication state, based upon the last message received.
If the engine coolant temperature data, engine overheat indication request, heater core temperature or engine off temperature data messages are missing for 5 seconds or longer, the IPC defaults the temperature gauge to the full hot position.

Possible Sources