Special Tool - Hand Tester: 57001-1394
Exhaust Butterfly Valve Actuator Resistance
Connections: P lead ←→ GY lead
Standard: 5 
200 Ω (for reference)
If the reading is 0 or infinity (∞) Ω, replace the exhaust butterfly valve actuator.
If the reading is in specification, remove the ECU and check the wiring for continuity between main harness connectors.
Disconnect the ECU and actuator connectors.
Wiring Inspection ECU Connector [A] ←→ Exhaust Butterfly Valve Actuator Connector [B] W/R lead (ECU terminal 45) [C] W/BL lead (ECU terminal 46) [D]
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).
Exhaust Butterfly Valve Actuator Circuit
1. ECU
2. Exhaust Butterfly Valve Actuator
Exhaust Butterfly Valve Actuator Inspection
Air Switching Valve (Service Code 64)Dimmer Switch
High or low beam can be selected
with the dimmer switch. When the
headlight is on high beam ( ), the
high beam indicator light goes on.
High beam.......( )
Low beam.......( )
NOTE
When the headlight is on high beam,
both headlights go on. When the
headlight is on low beam, only one
headl ...
Engine Vacuum Synchronization Inspection
NOTE
These procedures are explained on the assumption that
the intake and exhaust systems of the engine are in
good condition.
Situate the motorcycle so that it is vertical.
Remove:
Fuel Tank (see Fuel Tank Removal in the Fuel System
(DFI) chapter)
Air Cleaner Housing (see Air Cleaner ...
Turn Signal Switch
When the turn signal switch is
pushed to the left ( ) or right
( ), the corresponding turn signals
blink on and off.
To stop blinking, push the switch in.
Horn Button
When the horn button is pushed, the
horn sounds
LAP/Passing Button
When the LAP/passing button is
pushed, the headlight hi ...