LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2013 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis (Single Page) >> Electrical >> Horns >> Instrumentation/Driver Info >> Instrument Cluster Input/Output Check Mode >> Check Code Inspection >> Check code 18
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Check code 18

CODE INSPECTION CONDITION CHART

Check code 18 Ignition key illumination control signal
INSPECTION CONDITION DISPLAY ACTION
After selecting check code 18, wait for approx. 2 s.  on (FLASHING) Ignition key illumination flashes three times.  The ignition key illumination is normal.
Except above. Verify that the voltage of the instrument cluster terminal 1K is B+  .
  • If the voltage is as specified, replace the instrument cluster.
  • If the voltage is not as specified, inspect the following parts:
    • Ignition key illumination bulb
    • Wiring harness (Battery- Ignition key illumination- Instrument cluster)