Kawasaki J300 - Service manual > Ignition Coil (Service Code 37)

Ignition Coil Removal/Installation

• Refer to the Ignition Coil Removal/Installation in the Electrical System chapter.

Ignition Coil Input Voltage Inspection

NOTE

• Be sure the battery is fully charged.

• Turn the ignition switch off.
• Remove the ECU (see ECU Removal).
  • Do not disconnect the ECU connector.
• Connect a digital meter [A] to the connector [B] with the needle adapter set.

Special Tool - Needle Adapter Set: 57001-1457

Ignition Coil Input Voltage
 Connections to ECU Connector:
  Digital Meter (+) → G/BR lead (terminal 11) [C]
  Digital Meter (-) → Battery (-) Terminal

• Measure the input voltage to the primary winding of the ignition coil with the engine stopped, and with the connector joined.
• Turn the ignition switch on.

Input Voltage
 Standard: Battery Voltage

• Turn the ignition switch off.

  If the input voltage is out of the standard, check the ignition coil winding resistance (see Ignition Coil Inspection in the Electrical System chapter).

  If the ignition coil winding resistance is with in the standard, check the wiring for continuity (see Ignition Coil Circuit).

  If the wiring is good, check the ECU for its ground and power supply (see ECU Power Supply Inspection).

  If the ground and power supply are good, replace the ECU (see ECU Removal/Installation).

  If the input voltage is within the standard, check the ECU for its ground and power supply (see ECU Power Supply Inspection).

  If the ground and power supply are good, replace the ECU (see ECU Removal/Installation).

Ignition Coil Circuit

1. ECU
2. Spark Plug
3. Ignition Coil
4. Engine Stop Switch
5. Fuse Box
6. Ignition Fuse 15 A
7. Charging/ECU Fuse 30 A
8. Ignition Switch
9. Side Stand Switch
10. Battery
11. Engine Ground
12. Frame Ground 1
13. ECU Relay

See also: