Speedometer
The vehicle speed is calculated by the IPC based on the discrete vehicle speed input (CKT 817 (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.
A flashing vehicle speed display at high speeds may indicate a vehicle configured for non-North American (Export) application.