Operation - Section 3 OM3017.3 Page 3-32 Instrument Panel and Indicator Lights 4. Moving the Lamp Test switch lever to the right will advance to the next fault code. Once all active fault codes have been displayed, the fault code display sequence will be repeated, starting from the first fault code. EXITING THE DIAGNOSTICS MODE Starting the engine or turning the keyswitch to the OFF position will EXIT the diagnostics fault flash mode. If active fault codes have been determined as de- scribed previously, refer to the Cummins Engine Cen- try System "Troubleshooting and Repair Manual", Bulletin No. 3666070, or contact an Authorized Repair Location.