CDI Electronics Outboard Ignition Troubleshooting Guide

146 TROUBLESHOOTING GUIDE - Yamaha Troubleshooting Yamaha Troubleshooting 4. Check the stator resistance. Read from Read to Reading Ohms DVA (connected to pack) Brown Blue 188-282 135 V Minimum 5. Check the resistance and DVA output of the Triggers: Read from Read to Reading Ohms DVA (connected to pack) White/Red Trigger wire Engine ground 260-390 2 V Minimum White/Black Trigger wireEngine ground 260-390 2 V Minimum 6. Check the cranking RPM. A cranking speed of less than 250-RPM will not allow the system to fire properly. NO SPARK OR INTERMITTENT ON ONE OR MORE CYLINDERS: 1. Check the resistance and DVA output of the stator plate assembly: Read from Read to Reading Ohms DVA (connected to pack) White/Red Trigger wire Engine ground 260-390 2 V Minimum White/Black Trigger wire Engine ground 260-390 2 V Minimum 2. Check the DVA output on the Black/White wires from the power pack while connected to the ignition coils, reference to engine ground. You should read 120 V Minimum. 3. Swap the coils. If the problem moves to the other cylinder, replace the coil. If the problem stays on the cylinder, re-check the trigger coils. HAS SPARK BUT WILL NOT RUN: 1. Make sure the engine is getting fuel to the combustion camber (make sure there is no water or residue in the carburetor). Check to see if a high ethanol content is present. . If so, purge the fuel system with fresh fuel and see if the engine will start. 2. Check the fuel pressure AT THE CARBURETOR. You should see over 2 PSI. Check fuel lines for inner wall breakdown and wall collapse. 3. Check flywheel shear key to make sure it has not sheared due to backfiring or impact on the propeller. 4. Check spark plugs for presence of water, indicating a possible cracked block or blown head gasket. 5. Check compression, carburetor, reeds and do a cylinder leak down test. 6. Check the Blanker coil as follows as a defective Blanker coil can cause timing variance or not fire: Check From: Check To: Ohms Reading: DVA Reading: Yellow Engine ground 25-35 ohms 10 Volts Minimum WILL NOT STOP (KILL): Short the White wire from the CD Module to engine ground. If the engine stops, the problem is in the stop circuit. If the engine continues to run with the White wire shorted to engine ground, replace the defective CD Module. P60 HP (3 Cyl) 1991 E60 (3 Cyl) 1995-2000 6H3-85540-11-00 / 117-6H3-11 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. Verify the correct spark plugs are installed. 4. Check the resistance and DVA output of the Stator and Trigger: Read from Read to Ohm Reading DVA (connected) DVA (Disconnected) White/Red Trigger wire Black wire 104-156 2.5 V Minimum 4.5 V Minimum White/Black Trigger wire Black wire 104-156 2.5 V Minimum 4.5 V Minimum White/Green Trigger wire Black wire 104-156 2.5 V Minimum 4.5 V Minimum Brown Stator wire Black Stator wire 45-198 140 V Minimum 170 V Minimum Black/White Engine Ground - 100 V Minimum 5. Check the cranking RPM. A cranking speed of less than 250-RPM may not allow the system to fire properly.