Entering PCM Code Snapshot

With ".7.0" displayed on FDC (to cause ".7.0" to be displayed on FDC, see INTRODUCTION TO DIAGNOSTIC TESTING under DIAGNOSTIC TESTING), depress and release LO button on ECC panel. This will switch display from ".7.0" to "E.9.0". With "E.9.0" displayed, depress ECON and WARMER buttons on ECC panel. Display will now enter PCM code snapshot mode and displayed codes will be prefixed by "L".