CDI Electronics Outboard Ignition Troubleshooting Guide

119 Tohatsu/Nissan Troubleshooting Tohatsu/Nissan 9.9B, 9.9B2,12C2, 15B2, 18C2 1986-1992 (CU-15) NO SPARK: 1. Disconnect the Black and Brown stop wires and retest. If you now have spark, the stop circuit has a fault. 2. Test the stator (exciter) and trigger (pulsar) stator coils as follows: Red Lead Black Lead Resistance DVA Connected Red Component Gnd (Black) 168-252 110 V Minimum* Blue Component Gnd (Black) 30-46 3 V Minimum** Black/Yellow Component Gnd (Black) - 110 V Minimum If the above readings are OK and there is no spark, the ignition coil is likely defective. * A low resistance or DVA reading indicates the exciter coil is defective and needs to be rebuilt. ** A low resistance or DVA reading indicates the pulsar coil is defective and needs to be rebuilt. NO SPARK ON ONE CYLINDER: If only one spark plug has spark, the ignition coil is defective and will need to be replaced. ENGINE WILL NOT SHUT OFF: Short the Brown stop wire (from CD) to engine ground, if the engine shuts down, check the stop switch and harness. 9.9C, 9.9D, 15C, 15D, 18D, 18E 1993-1997 (3G2060601M) NO SPARK: 1. Disconnect the Black and Brown stop wires and retest. If you now have spark, the stop circuit has a fault. 2. Test the stator (exciter) and trigger (pulsar) stator coils as follows: Red Lead Black Lead Resistance DVA Connected Red Component Gnd (Black) 168-252 110 V Minimum* Blue Component Gnd (Black) 30-46 3 V Minimum** Black/Yellow Component Gnd (Black) - 110 V Minimum If the above readings are OK and there is no spark, the ignition coil is likely defective. * A low resistance or DVA reading indicates the exciter coil is defective and needs to be rebuilt. ** A low resistance or DVA reading indicates the pulsar coil is defective and needs to be rebuilt. NO SPARK ON ONE CYLINDER: If only one spark plug has spark, the ignition coil is defective and will need to be replaced. ENGINE WILL NOT SHUT OFF: Short the Brown stop wire (from CD) to engine ground, if the engine shuts down, check the stop switch and harness. 9.9D2, 15D2, 18E2 1998 and Newer (3G2060602M) NO SPARK: 1. Disconnect the Black and Brown stop wires and retest. If you now have spark, the stop circuit has a fault. 2. Test the stator (exciter) and trigger (pulsar) stator coils as follows: Red Lead Black Lead Resistance DVA Connected Red Blue 130-195 110 V Minimum* Blue Component Gnd (Black) - 3 V Minimum** Black/Yellow Component Gnd (Black) - 110 V Minimum CDI Output to coil*** If the above readings are OK and there is no spark, the ignition coil is likely defective. * A low resistance or DVA reading indicates the exciter coil is defective and needs to be rebuilt. ** Has a 2 wire exciter but tests like a pulsar (trigger). *** A low DVA reading indicates the C D is defective if the exciter tests good. NO SPARK ON ONE CYLINDER: If only one spark plug has spark, the ignition coil is defective and will need to be replaced. ENGINE WILL NOT SHUT OFF: Short the Brown stop wire (from CD) to engine ground, if the engine shuts down, check the stop switch and harness.