NOTICE
Never drop the vehicle-down sensor especially on a hard surface. Such a shock to the sensor can damage it.

Remove: Rear Seat (see Rear Seat Removal in the Frame chapter) Upper Seat Cover (see Seat Cover Removal in the Frame chapter) Connector [A] Bolts [B] and Nuts Vehicle-down Sensor [C]
Vehicle-down Sensor InstallationTransmission Assy Assembly
Install the ball bearing [A] until it is bottomed.
Turn the oil seal side to the bottom.
Special Tool - Bearing Driver Set: 57001-1129
Install the bearing holder [B].
Turn the flat side to the bottom.
Apply a non-permanent locking agent to the bearing
holder bolts [C].
Tighten: ...
Meter Unit Circuit (ZX1000J Model)
1. Ignition Switch
2. Joint Connector F
3. Stop Watch Button
4. Oil Pressure Switch
5. Crankshaft Sensor
6. Water Temperature Sensor
7. Gear Position Switch
8. Intake Air Temperature Sensor
9. ESD ECU (ZX1000JD/KD)
10. ECU
11. Rear Wheel Rotation Sensor
12. Engine Ground
13. Battery ...
For Primary Fuel Injectors
Remove the air cleaner housing (see Air Cleaner Housing
Removal).
Disconnect the primary fuel injector connector [A].
Connect a digital meter to the terminals in each primary
fuel injector [A].
Measure the primary fuel injector resistance.
Primary Fuel Injector Resistance ...