PINPOINT TEST H : Incorrect Speedometer Indication: Notes

Diagnostic Overview 

Refer to Instrument Panel Cluster (IPC) , Speedometer.

Normal Operation and Fault Conditions 

If the vehicle speed data is missing for 5 seconds or less or if the IPC receives invalid vehicle speed data for 5 seconds or less, the IPC defaults the speedometer to the last setting, based upon the last known good vehicle speed message.

Visual Inspection and Diagnostic Pre-checks 

Verify that the tire size on the vehicle matches the tire size listed on the VC label. Refer to Identification Codes , VC Codes.