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Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis >> Electrical >> Gauges >> Instrumentation/Driver Info >> Instrument Cluster Input/Output Check Mode >> Inspection of Check Codes >> Check code 55
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Check code 55

CHECK CODE 55 REFERENCE (DIMMER CANCEL SWITCH)

Check code 55 Dimmer cancel switch on/off signal
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CHECK CODE 55 DIAGNOSTIC PROCEDURE

STEP INSPECTION INDICATION ACTION
1 Turn the panel light control switch to the dimmer cancel position after selecting check code 55.
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 Go to next step.
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 Measure voltage at instrument cluster terminal 2A. Is voltage 4 V? 
  • If as specified, replace instrument cluster.
  • If not as specified, inspect following parts.
    • Panel light control switch
    • Wiring harness (Panel light control switch-instrument cluster)
2 Turn the panel light control switch to the other position.
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 Measure voltage at instrument cluster terminal 2A. Is voltage 0 V? 
  • If as specified, replace instrument cluster.
  • If not as specified, inspect following parts.
    • Panel light control switch
    • Wiring harness (Panel light control switch-instrument cluster)
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 Input signal to instrument cluster is okay.
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