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Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis >> External Pages >> Different car >> Section 709 (Instrumentation/Driver Info) >> Instrument Cluster Input/Output Check Mode >> Check Code Inspection >> Check code 08

Check code 08

WARNING: This page is about a different car, the 2008 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
CHECK CODE 08 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 1L 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 1L 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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