CDI Electronics Outboard Ignition Troubleshooting Guide

153 Yamaha Troubleshooting Yamaha cylinders can be caused by a bad coil, power pack or spark plug. S.A.F.E. WILL NOT ENGAGE: Disconnect the Pink warning wire from the power pack. Connect a jumper wire to engine ground and connect it to the Pink wire from the power pack (If it still fails to engage, the power pack is likely bad). If the engine now limits at approximately 2000 RPM, check the wiring from the temperature sensor and oil tank to the power pack. ENGINE WILL NOT STOP RUNNING: Disconnect the White kill wire and connect a jumper wire from the White wire to engine ground. If you still have spark, the power pack is likely bad. If the engine has no spark with the jumper connected, either the wiring harness, keyswitch or emergency stop switch is bad. C75 HP (3 Cyl) 1994-1996 E75 HP (3 Cyl) 1995-1996 CV85 HP (3 Cyl) 1989-1996 C85 HP (3 Cyl) 1991-1996 90 HP (3 Cyl) 1985-1991 688-85540-15-00/688-85540-16-00 NO SPARK ON ANY CYLINDER: 1. Disconnect the White stop wire and retest. If the engine’s ignition now has spark, the stop circuit has a fault. Check the key switch, harness and shift switch. 2. Inspect and clean all engine and ignition ground connections. 3. Check the resistance and DVA output of the Stator and Trigger: Read from Read to OEM Reading CDI Reading DVA (connected) White/Red Trigger wire White/Yellow Trigger wire 280-430 ohms 280-430 ohms 2.5 V Minimum White/Black Trigger wire White/Green Trigger wire 280-430 ohms 280-430 ohms 2.5 V Minimum Brown Stator wire Blue Stator wire (1984-89) 680-1020 ohms 600-800 ohms 85 V Minimum Brown Stator wire Blue Stator wire (1990-96) 840-1260 ohms 600-800 ohms 85 V Minimum