Section 1 (Instrument Panel - Electronic): Testing: Speedometer
WARNING: This page is about a different car, the 1987 Chrysler Conquest. However, it is still accessible from the selected car via links, so may be relevant.
Adjust tire pressure to specified amount. Using speedometer, confirm that indications of gauge are correct within allowable error limits. Allowable error margin is plus (+) 2.5 mph up to 75 mph. If amount of error margin is exceeded, check pulse generator. See PULSE GENERATOR .