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Home >> Mazda >> 2016 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine >> No. 2 Check Engine Light Illuminates >> Notes

No. 2 Check Engine Light Illuminates: Notes

2 CHECK ENGINE LIGHT ILLUMINATES
DESCRIPTION 
  • Check engine light illuminates incorrectly.
NOTE:
  • If there is a malfunction in the engine system, the PCM stores a DTC and illuminates the check engine light.
POSSIBLE CAUSE 
  • Check engine light illuminates for emission-related concern (DTC is stored in PCM)
  • Short to ground in wiring harness between the following terminals:
    • Instrument cluster terminal B-BCM terminal 2D
    • Instrument cluster terminal D-BCM terminal 2C
    • BCM terminal 3C-PCM terminal 2AK
    • BCM terminal 3D-PCM terminal 2AL
  • Open circuit in wiring harness between the following terminals:
    • Instrument cluster terminal B-BCM terminal 2D
    • Instrument cluster terminal D-BCM terminal 2C
    • BCM terminal 3C-PCM terminal 2AK
    • BCM terminal 3D-PCM terminal 2AL
  • Instrument cluster malfunction
G10951360