Kawasaki J300 - Service manual > Ignition System

Electrical System / Ignition System

WARNING The ignition system produces extremely high voltage.

Do not touch the spark plug, ignition coil or ignition coil lead while the engine is running, or you could receive a severe electrical shock.

NOTICE Do not disconnect the battery cables or any other electrical connections when the ignition switch is on, or while the engine is running. This is to prevent ECU damage.

Do not install the battery backwards. The negative side is grounded. This is to prevent damage to the ECU.

Crankshaft Sensor Removal

Crankshaft Sensor Installation

Crankshaft Sensor Inspection

Crankshaft Sensor Resistance
 Connections:
  BL lead → G lead
 Standard: 96 - 144 Ω @20ºC (68ºF)

Ignition System

If there is more resistance than the specified value, the coil has an open lead and must be replaced. Much less than this resistance means the coil is shorted, and must be replaced.

Any tester reading less than infinity (∞) indicates a short, necessitating replacement of the crankshaft sensor.

Crankshaft Sensor Peak Voltage Inspection

NOTE

Ignition System

Special Tool -
 Peak Voltage Adapter: 57001-1415
 Type: KEK-54-9-B

Connections:

Connections:

Crankshaft Sensor Peak Voltage
 Standard: 0.9 V or more

If the reading is less than the standard, inspect the crankshaft sensor (see Crankshaft Sensor Inspection).

Ignition Coil Removal

Ignition System

Ignition System

Ignition Coil Installation

Ignition System

Ignition Coil Inspection

Ignition Coil Winding Resistance
 Primary Windings: 2.38 - 3.22 Ω
 Secondary Windings: 7.2 - 10.8 kΩ

Ignition System

If the tester does not read as specified, replace the ignition coil.

If the tester reads as specified, the ignition coil windings are probably good. However, if the ignition system still does not perform as it should after all other components have been checked, replace the coil with one known to be good.

Ignition Coil Primary Peak Voltage Inspection

NOTE

Ignition System

Special Tool -
 Peak Voltage Adapter: 57001-1415
 Type: KEK-54-9-B

Connections:
 Adapter (R, +) → Ignition Coil Primary Lead Terminal
 Adapter (G/BR, -) → Ignition Coil Ground Terminal

Ignition System

WARNING To avoid extremely high voltage shocks, do not touch the spark plugs or tester connections.

Ignition Coil Primary Peak Voltage
 Standard: 120 V or more

If the reading is less than the specified value, check the following.

Ignition Coil (see Ignition Coil Inspection)
Crankshaft Sensor (see Crankshaft Sensor Inspection)
ECU (see ECU Power Supply Inspection in the Fuel System (DFI) chapter)

Spark Plug Removal

Spark Plug Installation

Spark Plug Condition Inspection

Ignition System

IC Igniter Inspection

Ignition System

Ignition System Troubleshooting

Ignition System

Ignition System Circuit

Ignition System

  1. Vehicle-down Sensor
  2. Engine Stop Switch
  3. Fuse Box
  4. Ignition Fuse 10 A
  5. Charging/ECU Fuse 30 A
  6. Ignition Switch
  7. Side Stand Switch
  8. Intake Air Pressure Sensor
  9. Throttle Sensor
  10. Battery 12 V 10 Ah
  11. Engine Ground
  12. Frame Ground 1
  13. ECU Relay
  14. ECU
  15. Crankshaft Sensor
  16. Ignition Coil
  17. Spark Plug
  18. Water Temperature Sensor (ECU)

See also:

 Kawasaki J300 - Service manual > Charging System

Alternator Cover Removal Drain: Engine Oil (see Engine Oil Change in the Periodic Maintenance chapter) Coolant (see Coolant Change in the Periodic Maintenance chapter) Remove: Storage Box (see Storage Box Removal in the Frame chapter) Lower Fairing (see Lower Fairing Removal In the Frame chapter) Exhaust Pipe (see Exhaust Pipe Removal in the Engine Top End chapter) Remove the band [A] and slide the dust cover [B]. Open the clamp [C]. Disconnect: Crankshaft Sensor Lead Connector [D] Alternator Lead Connector [E] Open the water hose clamp and disconnect the water bypass hose [A]. Loosen the water hose clamp screws and disconnect the water hoses [B]. Remove: Alternator Cover Bolts [C] Clamps [D] Alternator Cover [E]

 Kawasaki J300 - Service manual > Electric Starter System

Starter Motor Removal Remove: Storage Box (see Storage Box Removal in the Frame chapter) Air Cleaner Box (see Air Cleaner Box Removal in the Fuel System (DFI) chapter) Slide the rubber cap [A]. Remove the starter motor cable terminal nut [B]. Remove the starter motor mounting bolts [C] and engine ground terminal [D]. Remove the starter motor [E].