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Home >> Mazda >> 2014 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Electrical >> Horns >> Instrumentation/Driver Info >> Instrument Cluster Input/Output Check Mode >> Check Code Inspection >> Check code 08

Check code 08

CODE INSPECTION CONDITION CHART

Check code 08 TNS relay ON/OFF signal
STEP INSPECTION CONDITION DISPLAY ACTION
1 Turn the headlight switch to the TNS position. (TNS relay ON). on Go to the next step.
oFF Verify that the voltage of instrument cluster terminal 1B is B+  .
  • If the voltage is as specified, replace the instrument cluster.
  • If the voltage is not as specified, inspect the following parts:
    • TNS relay
    • Wiring harness (Battery-TNS relay-Instrument cluster)
2 Turn the headlight switch off. (TNS relay OFF). on Verify that the voltage of the instrument cluster terminal 1B is 1.0 V or less. 
  • If the voltage is as specified, replace the instrument cluster.
  • If the voltage is not as specified, inspect the following parts:
    • TNS relay
    • Wiring harness (TNS relay-Instrument cluster)
oFF Input signal to the instrument cluster is normal.
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