I AM TRYING TO RETRIEVE CODES USING A VOLTMETER. WHEN I CONNECT THE WIRES AS SHOWN IN MY HAYNES MANUAL, THE NEEDLE OF THE VOLTMETER DEFLECTS ALL THE WAY TO THE RIGHT. I HAVE GONE THROUGH THIS PROCESS BEFORE AND WAS ABLE TO RETRIEVE CODES. NORMALLY THE NEEDLE DEFLECTS ONCE FOR #1,TWICE FOR#2 AND SO ON. WHEN I WAS SETTING THE VOLTMETER UP THIS TIME I FUMBLED WITH ONE OF THE LEADS AND CONTACTED WITH THE CHASSIS CREATING A SPARK. DISCONNECTING THE NEG. BATTERY CABLE AND RECONNECTING THE CABLE DID NOT CHANGE ANYTHING. DID I FRY THE PCM? HOW DO I TEST THE DIODE THAT PROTECTS THE PCM. IS THERE A TEST FOR THE PCM?
May 30, 2007 at 9:34 PM