Speedometer

The vehicle speed is calculated by the IPC based on the discrete vehicle speed input (CKT 517 (DK GRN)) from the powertrain control module (PCM). This input is a filtered pulse width modulated signal, consisting of 4000 pulses per mile.

The vehicle speed offset from the actual vehicle speed may indicate a vehicle configured for non-American application. Refer to A Diagnostic System Check
- Instrument Cluster.

A flashing vehicle speed display at high speeds may indicate a vehicle configured for non-North American (Export) application.