Speedometer Module: Description and Operation

The speedometer receives a signal from the vehicle speed sensor on circuit G7. Circuit G7 also connects to the Powertrain Control Module (PCM) at cavity 47.

Circuits F87 from fuse 21 in the fuse block and circuit G5 from fuse 22 in the fuse block supply voltage to the speedometer. Circuits F87 and G5 are HOT when the ignition switch is in the START or RUN position. Circuit Z2 provides ground for the speedometer.