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

Normal Operation and Fault Conditions 

See AWD Gauge, Tachometer Or Temperature Gauge. Refer to: Instrument Panel Cluster (IPC) - System Operation and Component Description .

AWD Gauge 

• If the AWD data or vehicle speed messages are missing for less than 5 seconds or if the IPC receives invalid torque data for less than 5 seconds, 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 5 seconds or longer, the IPC defaults the display fill area in front of the front wheels and behind the rear wheels off.

Tachometer 

• If the engine rpm 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 message is missing for 5 seconds or longer, the IPC defaults the tachometer to 0 rpm.

Temperature Gauge 

• If the engine coolant temperature data or engine overheat indication request 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 or engine overheat indication request messages are missing for 5 seconds or longer, the IPC defaults the temperature gauge to the full hot position.

Possible Sources 

• Communication concern
• GWM concern
• PCM input concern
• IPC