Special Tool - Hand Tester: 57001-1394
For the switch housings and the ignition switch, refer to the tables in the Wiring Diagram.
If the switch has an open or short, repair it or replace it with a new one.
Rear Brake Light Switch Connections

Sidestand Switch Connections 
Oil Pressure Switch Connections*

*: Engine lubrication system is in good condition.
Switches and Sensors
Water Temperature Sensor InspectionStick Coil Inspection
Remove the stick coils (see Stick Coil Removal).
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.
Conn ...
Vehicle-down Sensor Output Voltage Inspection
Remove the vehicle-down sensor.
Connect the measuring adapter [A] to the vehicle-down
sensor connectors as shown in the figure.
Special Tool - Measuring Adapter: 57001-1700
Main Harness [B]
Vehicle-down Sensor [C]
Connect a digital meter [D] to the measuring adapter
leads.
V ...
DFI System Troubleshooting Guide
NOTE
This is not an exhaustive list, giving every possible cause for each
problem listed. It is meant
simply as a rough guide to assist the troubleshooting for some of the more
common difficulties in
DFI system.
The ECU may be involved in the DFI electrical and ignition system
tro ...