Entering Diagnostic Mode
Turn ignition on. Depress "OFF" and "WARMER" buttons on ECC panel simultaneously and hold buttons until ".." appears on digital display panel. Release buttons and code "-1.8.8" should appear indicating beginning of diagnostic readout. Trouble codes will be displayed beginning with the lowest numbered code. If no codes are stored, "-1.8.8" will appear for longer period of time, then code ".7.0" will appear. See Fig 1.
NOTE:
Trouble code ".7.0" is a decision point. When this code is displayed, either select diagnostic feature (switch test, engine data display, output cycling test or fixed spark mode), exit diagnostic mode, or clear codes and then exit diagnostic mode.