CDI Electronics Outboard Ignition Troubleshooting Guide

125 Tohatsu/Nissan Troubleshooting Tohatsu/Nissan replace the water pressure sensor. C) Disconnect the Light Blue wire to the overheat temperature sensor. Retest engine. If the engine performs normally, replace the overheat temperature sensor. NO SPARK ON ONE OR MORE CYLINDERS: 1. Swap the ignition coil from the cylinder not firing to one that does. If the no fire follows the coil, replace it. 2. Disconnect the Yellow and White wires from the Rectifier/Regulator. If the miss is gone, replace the regulator/ rectifier. 3. Test the CDI output as follows: Red Lead Black Lead DVA Connected Blk/Wht Black 190 V Minimum CDI Output to coil Blk/Red Black 190 V Minimum CDI Output to coil Blk/Grn Black 190 V Minimum CDI Output to coil 4. Test the trigger (pulsar) stator coils as follows: Red Lead Black Lead Resistance DVA Connected Wht/Red Black 166-230 4.75 V Minimum Wht/Blk Black 166-230 4.75 V Minimum Wht/Blue Black 166-230 4.75 V Minimum 5. Disconnect the Yellow and White wires from the Rectifier/Regulator. If the miss is gone, replace the regulator/ rectifier. HIGH SPEED MISS: 1. Disconnect the regulator/rectifier. If the miss is gone, replace the regulator/rectifier 2. Perform a high speed shutdown and read the spark plugs. If one sparkplug is black and the others are a tan color, swap the ignition coil to another cylinder. Repeat the test. If the black sparkplug reading follows the coil, replace the coil. 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. 115A2, 120A 2, 140A 2 NO SPARK ON ANY CYLINDER: 1. Disconnect the Black and Brown stop wires and retest. If you now have spark, the stop circuit has a fault. 2. Disconnect the Black/White wires from the Rectifier/Regulator. If spark returns to all cylinders, replace the Rectifier/Regulator. 3. Test the stator (exciter) and trigger (pulsar) stator coils as follows: Red Lead Black Lead Resistance DVA Connected Wht/Green Orange 255-350 135 V Minimum Wht/Red Black 187-260 4.75 V Minimum Wht/Black Black 187-260 4.75 V Minimum Wht/Blue Black 187-260 4.75 V Minimum Wht/Yellow Black 187-260 4.75 V Minimum NO SPARK ON ONE OR MORE CYLINDERS: 1. Swap the ignition coil from the cylinder not firing to one that does. If the no fire follows the coil, replace it. 2. Disconnect the Yellow and White wires from the Rectifier/Regulator. If the miss is gone, replace the regulator/ rectifier. 3. Test the CDI output as follows: Red Lead Black Lead DVA Connected Blk/Wht Black 190 V Minimum CDI Output to coil Blk/Red Black 110 V Minimum CDI Output to coil Blk/Grn Black 110 V Minimum CDI Output to coil Blk/Blue Black 110 V Minimum CDI Output to coil 4. Test the trigger (pulsar) stator coils as follows: Red Lead Black Lead Resistance DVA Connected Wht/Red Black 187-260 4.75 V Minimum Wht/Blk Black 187-260 4.75 V Minimum Wht/Blue Black 187-260 4.75 V Minimum Wht/Yellow Black 187-260 4.75 V Minimum