Pinpoint Test D : The Temperature Gauge Is Inoperative: Notes
Diagnostic Overview
Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Service Information for information about these practices.
Normal Operation and Fault Conditions
REFER to Temperature Gauge in Instrument Panel Cluster (IPC) .
NOTE:
If DTC U0100:00 is set in the IPC, other observable symptoms may be an inoperative tachometer, speedometer or odometer.
If the IPC does not receive the engine coolant temperature message from the PCM for more than 5 seconds, the IPC sets DTC U0100:00 in continuous memory and defaults the temperature gauge to cold (C). If the engine coolant temperature message is deemed invalid by the IPC for 5 seconds or more, the IPC sets DTC U0401:81 and defaults the temperature gauge to cold (C).
Possible Sources
- PCM
- IPC