NOTE
Be sure the battery is fully charged.

Main Harness [B] Subthrottle Valve Actuator [C]
Special Tool - Measuring Adapter: 57001-1700
Connect the peak voltage adapter [D] and a digital meter [E] to the measuring adapter leads.
Special Tool - Peak Voltage Adapter: 57001-1415 Type: KEK-54-9-B

Special Tool - Peak Voltage Adapter: 57001-1415 Type: KEK-54-9-B
Subthrottle Valve Actuator Input Voltage Connections to Adapter:
(I) Digital Meter (+) → R (actuator BK/O) lead Digital Meter (–) → Battery (–) terminal (II) Digital Meter (+) → BK (actuator G) lead Digital Meter (–) → Battery (–) terminal (III) Digital Meter (+) → W (actuator P/BL) lead Digital Meter (–) → Battery (–) terminal (IV) Digital Meter (+) → Y (actuator Y/BK) lead Digital Meter (–) → Battery (–) terminal
Input Voltage
Standard: About DC 8.5
10.5 V and
then 0 V or
About DC 8.5
10.5 V
If the reading is in specification, but the actuator does not operate, replace the throttle body assy.
If the reading is out of the specification, remove the ECU and check the wiring for continuity between main harness connector.
Special Tool - Hand Tester: 57001-1394
Disconnect the ECU and actuator connectors.

Wiring Continuity Inspection ECU Connector [A] ←→ Subthrottle Valve Actuator Connector [B] G lead (ECU terminal 15) [C] BK/O lead (ECU terminal 2) [D] P/BL lead (ECU terminal 14) [E] Y/BK lead (ECU terminal 1) [F]
If the wiring is good, check the ECU for its ground and power supply (see ECU Power Supply Inspection in the Fuel System (DFI) chapter).
If the ground and power supply are good, replace the ECU (see ECU Removal/Installation in the Fuel System (DFI) chapter).
Subthrottle Valve Actuator Circuit

1. ECU
2. Subthrottle Valve Actuator
Subthrottle Valve Actuator Resistance InspectionDFI System Wiring Diagram (KIBS Equipped Models)
1. Air Intake Solenoid Valve (Other than US, CA and CAL Models)
2. Engine Stop Switch
3. Starter Button
4. Air Switching Valve
5. Stick Coil #1, #2, #3, #4
6. Spark Plugs
7. Intake Air Temperature Sensor
8. Crankshaft Sensor
9. Secondary Fuel Injector #1
10. Secondary Fuel Injector #2
...
Front Fork
The front fork operation and oil leakage
should be checked in accordance
with the Periodic Maintenance Chart.
For various riding or load conditions
the front fork can be adjusted for:
Spring preload
Rebound damping force
Compression damping force
WARNINGImproper fork leg adju ...
Balance Inspection
Remove the front and rear wheels (see Front/Rear Wheel
Removal).
Support the wheel so that it can be spun freely.
Spin the wheel lightly, and mark [A] the wheel at the top
when the wheel stops.
Repeat this procedure several times. If the wheel stops
of its own accord in various positi ...