Pinpoint Test B : A Virtual Gauge (Speedometer, Tachometer Or Temperature) Is Inoperative: Notes
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
Normal Operation and Fault Conditions
See Speedometer, Tachometer and Temperature Gauge. Refer to: Instrument Panel Cluster (IPC) - System Operation and Component Description .
Speedometer
- If the vehicle speed message is missing or invalid for less than 5 seconds, the IPC defaults the speedometer to the last indication state, based upon the last message received.
- If the vehicle speed message is missing or invalid for 5 seconds or longer, the IPC defaults the speedometer to 0 km/h (0 mph).
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 input concern
- PCM input concern
- IPC