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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 08
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Check Code 08

CHECK CODE 08

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)
G04323844Courtesy of MAZDA MOTORS CORP.
 Go to the next step.
G04323845Courtesy of MAZDA MOTORS CORP.
 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)
G04323846Courtesy of MAZDA MOTORS CORP.
 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)
G04323847Courtesy of MAZDA MOTORS CORP.
 Input signal to the instrument cluster is normal.
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