ELECTRICAL SYSTEM 16-43

Ignition System

Stick Coil (Ignition Coil together with Spark Plug Cap)

Inspection•

•Remove the stick coils (see this chapter).

Measure the primary winding resistance [A] as follows. ○Connect the hand tester between the coil terminals. ○•Set the tester to the × 1 Ω range, and read the tester.

Measure the secondary winding resistance [B] as follows. ○Connect the tester between the plug terminal and (–) coil

terminal.

○Set the tester to the × 1 kΩ range and read the tester.

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

Stick Coil Primary Peak Voltage

NOTE

○Be sure the battery is fully charged.

•Remove the stick coils (see this chapter), but do not re-

•move the spark plugs.

Measure the primary peak voltage as follows. ○Connect a commercially peak voltage adapter [B] into the

hand tester [C] which is set to the x 250 V DC range. ○Connect the adapter to the lead wire-peak voltage adapter [A] which is connected between the stick coil

connector and stick coil.

○Install the new spark plug [D] into each stick coil [E], and ground them onto the engine.

ECU [F]

Battery [G]

Recommended ToolPeak Voltage Adapter

Type: KEK-54-9-B

Brand: KOWA SEIKI

Special Tools - Hand Tester: 57001–1394

Lead Wire-Peak Voltage Adapter:

57001–1449

Primary Lead Connection

Adapter (R, +) to lead wire-peak voltage adapter (W)

Adapter (BK, –) to lead wire-peak voltage adapter (R)

16-44 ELECTRICAL SYSTEM

Ignition System

WARNING

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

•Turn the ignition switch and the engine stop switch ON.

•Pushing the starter button, turn the engine 4 5 seconds with the transmission in neutral to measure the primary

•peak voltage.

Repeat the measurements 5 times for one stick coil.

Stick Coil Primary Peak Voltage Standard: 88 V or more

•Repeat the test for the other stick coil.

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

Stick Coils (see Stick Coil Inspection)

Crankshaft Sensor (see Crankshaft Sensor Inspection) If the stick coils, and crankshaft sensor are normal, check the ECU (see Fuel System (DFI) chapter).

Spark• Plug Removal

Refer to the Electrical System in the Periodic Maintenance chapter.

Spark• Plug Installation

Refer to the Electrical System in the Periodic Maintenance chapter.

Spark• Plug Inspection

Refer to the Electrical System in the Periodic Maintenance chapter.

Spark• Plug Gap Inspection

Refer to the Electrical System in the Periodic Maintenance chapter.

ELECTRICAL SYSTEM 16-45

Ignition System

Interlock• Operation Inspection

Remove:

Seats (see Frame chapter)

Junction Box (see this chapter)

○Do not disconnect the connectors.

1st• Check

Measure the terminal voltage of the G/BK lead in the junction box connector [A] in accordance with the following procedure.

○Insert the needle adapter [B] in the Green/Black lead terminal.

○Set the tester [C] to the 25 V DC range, connect it to the needle adapter and frame ground [D].

Connection:

Tester (+) Terminal → G/BK Lead Terminal

Tester (–) Terminal → Frame Ground

Condition:

Transmission Gear → 1st Position Clutch Lever → Release or Pulled In Side Stand → Down

Special Tool - Needle Adapter Set: 57001–1457

○Turn the ignition switch on. ○Read the voltage.

Interlock Operation Voltage Standard: 4 V or more

If the voltage is lower than the standard, inspect the side stand switch, starter lockout switch, and junction box. And their parts are normality, replace the ECU.

If the voltage is standard, push the starter button to check as follows.

○If the starter motor does not turn, the ECU is good, and check the starter system circuit.

○If the starter motor turned, ECU is defective. Replace the ECU.

2nd Check

•Raise the rear wheel off the ground with a stand. Inspect the engine for its secure stop after the following

•operations are completed.

Run the engine to the following conditions.

•Setstop.the side stand on the ground, then the engine will If whichever may not be stopped, inspect the starter lockout switch, side stand switch and junction box.

If their parts are normality, replace the ECU.