Circuit Tests: Notes
WARNING: This page is about a different car, the 1997 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Ensure ignition is off before disconnecting harness connector from any component or control module. If PCM replacement is recommended in following testing, always ensure PCM connectors and ground circuits are okay. If either are suspect, repair and repeat testing to confirm PCM malfunction.