If the display function does not work, replace the meter unit.

Check 3-6: Neutral Indicator Light (LED) Inspection
Meter Unit Circuit (ZX1000J Model)Exploded View
AL: Tighten the two clamp bolts alternately two times to ensure even
tightening torque.
HG: Apply high-temperature grease.
R: Replacement Parts
WL: Apply soap and water solution or rubber lubricant.
Specifications
WARNINGSome replacement tires may adversely
affect h ...
Front Wheel Rotation Sensor Signal (Service Code 27)
Front Wheel Rotation Sensor Signal Inspection
The front wheel rotation sensor sends the signal to the
ECU through the KIBS hydraulic unit (KIBS equipped
models). For other than KIBS equipped models, the
signal is sent directly to the ECU.
The ECU uses the wheel rotation sensor signal for KTRC
...
KIBS Equipped Models
1. Clutch Cable
2. Vacuum Hose (Equipped Models)
3. Left Switch Housing Lead
4. Main Harness
5. Front Brake Hose
6. Throttle Cables
7. Right Switch Housing Lead
8. Bracket (Hold the brake pipes.)
9. Run the meter lead to outside of the meter bracket.
10. Run the vacuum hoses to inside o ...