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 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 the 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 

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