From CDI:
NO FIRE ON ANY CYLINDER: 1. Disconnect the Black/Yellow kill wire AT THE SWITCHBOX and retest. If the engine’s Ignition now has spark, the stop circuit has a fault. Check the key switch, harness, and shift switch (if present). 2. Disconnect the Yellow wires from the Stator to the Regulator/Rectifier and retest. If the engine now has spark, replace the Regulator/Rectifier. 3. Check the cranking RPM. A cranking speed less than 250 RPM will not allow the system to fire properly. This can be caused by a weak battery, dragging starter, bad battery cables, or a mechanical problem inside the engine. 4. Check the Stator resistance and DVA as given below: Black Stator using Flywheel with Bolted-In Magnets Read from Read to OEM Ohms CDI Ohms DVA (Connected) DVA (Disconnected) Blue(Low Speed Coil) Engine Gnd 5.8-7.0K Ω 2.2-2.4K Ω 180-400 V 180-400 V (*) Red (High Speed Coil) Engine Gnd 125-155 Ω 45-55 Ω 25-100 V 25-100 V (*) Black Stator using Flywheel with Glued-in Magnets Read from Read to OEM Ohms CDI Ohms DVA (Connected) DVA (Disconnected) Blue (Low Speed Coil) Engine Gnd 3.25-3.65K Ω 488-662 Ω 180-400 V 180-400 V (*) Red (High Speed Coil) Engine Gnd 75-90 Ω 28-32 Ω 25-100 V 25-100 V (*) Red Stator Kit Read from Read to OEM Ohms CDI Ohms DVA (Connected) DVA (Disconnected) White/Green (Stator) Green/White 500-700 Ω 400-550 Ω 180-400 V 180-400 V (*) Blue (Adapter Module) Blue (Adapter Module) Open - 180-400 V 180-400 V (*) Blue (Adapter Module) Engine Gnd Open Open 180-400 V 180-400 V (*) (*) This reading can be used to determine if a Stator (or Adapter Module) or Switchbox has a problem. For instance, if you have no spark on any cylinder and the Stator’s DVA reading is low disconnect the Stator wires and recheck the DVA. If the reading stays low, the Stator is bad. If the reading is now within specification, the Switchbox is bad.
