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Home >> Mazda >> 2006 >> MX-5 Miata Base >> Repair and Diagnosis >> Electrical >> Horns >> Instrumentation/Driver Info >> Instrument Cluster Input/Output Check Mode >> Check Code Inspection >> Check Code 18
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Check Code 18

CHECK CODE 18

Check code 18 Ignition key illumination control signal
INSPECTION CONDITION DISPLAY ACTION
After selecting check code 18, wait approx. 2 s. 
G04323854Courtesy of MAZDA MOTORS CORP.
Ignition key illumination flashes three times.  The ignition key illumination is normal.
Except above Verify that the voltage of 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)