Pinpoint Test E : The Speedometer Is Inoperative: Notes
Normal Operation and Fault Conditions
See Speedometer. Refer to: Instrument Panel Cluster (IPC) - System Operation and Component Description .
If the BCM does not receive the vehicle speed message from the ABS module for more than 1 second, the BCM and IPC set DTC U0121:00.
If the IPC does not receive the vehicle speed message or if the data is deemed invalid for more than 1 second, the IPC defaults the speedometer to 0 km/h (0 mph).
Possible Sources
- ABS module
- IPC