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Home >> Mazda >> 2019 >> CX-9 Signature >> Repair and Diagnosis (Single Page) >> Suspension >> Wheels & Tire System >> On-Board Diagnostics - TPMS >> DTC U0127-00: Communication Error To Start Stop Unit [Instrument Cluster (Direct TPMS (Without TPMS Set Switch))] >> Notes
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DTC U0127-00: Communication Error To Start Stop Unit [Instrument Cluster (Direct TPMS (Without TPMS Set Switch))]: Notes

DTC U0127:00 [INSTRUMENT CLUSTER (DIRECT TPMS (WITHOUT TPMS SET SWITCH))] DETECTION CONDITION AND POSSIBLE CAUSE

DTC U0127:00 Communication error to start stop unit
DETECTION CONDITION
  • Communication error to start stop unit is detected.
FAIL-SAFE FUNCTION
POSSIBLE CAUSE
  • Start stop unit connector or terminal malfunction
  • Instrument cluster connector or terminal malfunction
  • Short to ground in wiring harness between instrument cluster terminal 1X and start stop unit terminal 1Q
  • Short to power supply in wiring harness between instrument cluster terminal 1X and start stop unit terminal 1Q
  • Open circuit in wiring harness between instrument cluster terminal 1X and start stop unit terminal 1Q
  • Start stop unit malfunction
  • Instrument cluster malfunction
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