These instructions apply to the Honda Jazz Mk3 (GK) 2015-2020. For other models, please choose your vehicle here.
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The Honda Jazz (Mk3/GK, 2015–2020) — the Fit in many markets — has a documented gauge self-diagnostic built into the cluster, separate from the climate self-test. Hold the trip/reset button, work the headlights as the ignition switches on, and the cluster beeps, sweeps the needles and flashes every LCD segment and warning lamp. It is Honda’s own factory check, no scan tool needed. Here is how to open it on the Mk3 Jazz.
What the Cluster Self-Test Shows
The Jazz cluster combines the speedometer, tachometer and fuel gauge with a digital odometer/trip and temperature LCD. The self-diagnostic drives all of them at once: the beeper sounds five times, several warning indicators (seat-belt, coolant-temperature, fuel and brake) blink, the odometer/trip and temperature segments flash five times, and the speedometer, tachometer and fuel-gauge needles sweep from minimum to maximum and back. It reads nothing from the engine and stores nothing — it is purely a display, lamp and gauge check you can run any time.
How to Open the Hidden Diagnostic Menu
- Park, transmission in P or neutral, engine off.
- Press and hold the trip/reset button on the cluster.
- Keeping it held, turn the lighting switch ON, then turn the ignition to ON (II) — do not start the engine.
- Between roughly two and five seconds, switch the lights OFF, ON, then OFF again, still holding the button.
- Within five seconds, release the button, then press and release it three times. The beeper sounds, the needles sweep and the lamps flash — the self-test is running.
How to Read It
- Listen for the five beeps confirming the test has started.
- The speedometer, tachometer and fuel-gauge needles sweep full travel and return — watch for any that stick.
- The seat-belt, coolant-temperature, fuel and brake indicators blink — a lamp that never lights is a failed bulb/LED.
- The odometer/trip and temperature LCD segments flash five times — check for missing or dim segments.
How to Exit
Turn the ignition switch OFF to leave the test. It also ends automatically if the car moves above about 1.2 mph (2 km/h). Nothing is saved and no settings change, so you can drive away normally afterwards.
Frequently Asked Questions
Is this the same as the climate self-diagnostic?
No. The climate test uses the heater/AC controls and reports HVAC codes. This gauge self-diagnostic uses the trip/reset button and headlights and only checks the gauges, lamps, beeper and LCD.
Does the hybrid IMA Jazz behave the same?
The needle and LCD self-test runs the same way on Jazz models with the conventional cluster. Hybrid variants substitute a charge/assist or power gauge for the tachometer, but the sweep-and-flash routine and entry sequence are unchanged.
It would not start the test — why?
Timing is the usual culprit: the light OFF-ON-OFF and the three button presses must each fall inside the five-second windows. Switch off, wait, and try again — a second attempt usually does it.
Will cycling the lights harm anything?
No. A one-off check is fine. The brief on/off cycling has no lasting effect on the Jazz’s halogen or LED headlamps.
Can the self-test damage the cluster?
No. It is read-only and meant to be run on demand. The beeps, needle sweep and flashing lamps are the test working as designed.
If a warning lamp stays lit after the test instead of just blinking during it, a diagnostic trouble code is stored — decode what it means on autodtcs.com.
Disclaimer: The information on this page is provided for general guidance only. Always follow your official service manual and safety precautions when working on your vehicle. We are not responsible for errors, omissions, or any damage resulting from the use of this information.
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