IGNITION SYSTEM HONDA V45 TROUBLESHOOTING The ignition system has two sub-systems; one for the No. 1 and No. 3 cylinders and one for the No. 2 and No. 4 cylinders. Determine which sub-system is faulty, then proceed to the detailed tests below. Engine cranks but will not start Engine stop switch OFF No spark at plugs Faulty transistorized spark unit Faulty pulse generator No spark at plug Engine stop swtich OFF Poorly connected, broken or shorted wires Between ignition switch and engine stop switch Between spark unit and engine stop switch Between spark unit and ignition coil Between ignition coil and plug Between spark unit and pulse generator Faulty ignition coil Faulty ignition switch Faulty spark unit Faulty pulse generator Engine starts but runs poorly Ignition primary circuit Faulty ignition coil Loose or bare wire Intermittent short circuit -- Secondary circuit Faulty plug Faulty high tension wire Timing advance incorrect Faulty pulse generator Faulty spark unit 19-2 318 Date of Issue: May, 1982 © HONDA MOTOR CO., LTD