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Home >> Mazda >> 2006 >> 3 i, 2.0 F, Automatic >> Repair and Diagnosis >> Electrical >> Horns >> Instrumentation/Driver Info >> Information Display Input/Output Check Mode >> Check Code Inspection >> Check code 04

Check code 04

CHECK CODE 04 CHART

Check code 04 TNS relay ON/OFF signal
STEP INSPECTION CONDITION DISPLAY ACTION
1 Turn the headlight switch to the TNS position. (TNS relay ON)
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 Go to the next step.
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 Verify that the voltage of information display terminal C is B+. 
  • If the voltage is as specified, replace the information display.
  • If the voltage is not as specified, inspect the following parts:
    • TNS relay
    • Wiring harness (Battery-TNS relay-information display)
2 Turn the headlight switch off. (TNS relay OFF)
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 Verify that the voltage of the information display terminal C is 1.0 V or less. 
  • If the voltage is as specified, replace the information display.
  • If the voltage is not as specified, inspect the following parts:
    • TNS relay
    • Wiring harness (TNS relay-information display)
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 Input signal to the information display is normal.
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