Engine Controls - Pin Voltage Charts: Introduction
Pin voltage charts are supplied (where available) to reduce diagnostic time. Checking pin voltages at the Powertrain Control Module (PCM) determines whether the PCM is receiving and transmitting proper voltage signals. Charts may also help determine if PCM harness has shorts or opens.
NOTE:
Unless stated otherwise in testing procedures, all voltage tests should be performed with a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.