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Home >> Mazda >> 2012 >> 3 Mazdaspeed, 2.3L Eng VIN 3 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> Instrumentation/Driver Info >> Information Display Input/Output Check Mode >> Check Code Inspection >> Check code 04

Check code 04

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