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Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis >> Electrical >> Horns >> Instrumentation/Driver Info >> Instrument Cluster Input/Output Check Mode >> Inspection of Check Codes >> Check code 08
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Check code 08

CHECK CODE 01 REFERENCE (TNS RELAY)

Check code 08 TNS relay on/off signal
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CHECK CODE 08 DIAGNOSTIC PROCEDURE

STEP INSPECTION INDICATION ACTION
1 Turn headlight switch to TNS position. (TNS relay on).
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 Go to next step.
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 Measure voltage at instrument cluster terminal 2K. Is voltage B+  ?
  • If as specified, replace instrument cluster.
  • If not as specified, inspect following parts.
    • TNS relay
    • Wiring harness (Battery-TNS relay-instrument cluster)
2 Turn headlight switch off. (TNS relay off).
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 Measure voltage at instrument cluster terminal 2K. Is voltage 0 V? 
  • If as specified, replace instrument cluster.
  • If not as specified, inspect following parts.
    • TNS relay
    • Wiring harness (TNS relay-instrument cluster)
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 Input signal to instrument cluster is okay.
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