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Home >> Toyota >> 2019 >> Yaris LE >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System (Auto) - Diagnostic Codes >> Air Conditioning System (For Automatic Air Conditioning System) >> DTC U2300-54: Central Configuration Missing Calibration; DTC U2300-55: Central Configuration Not Configured; DTC U2300-56: Central Configuration Invalid / Incompatible (ISO/SAE reserved); DTC U2300-64: Central Configuration Signal plausibility failure [08/2018 - 08/2019] >> Contents
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DTC U2300-54: Central Configuration Missing Calibration; DTC U2300-55: Central Configuration Not Configured; DTC U2300-56: Central Configuration Invalid / Incompatible (ISO/SAE reserved); DTC U2300-64: Central Configuration Signal plausibility failure [08/2018 - 08/2019]: Contents

DTC No. Detection Item DTC Detection Condition Warning Indicate Memory Fail-safe Operation Note
U2300-54 Central Configuration Missing Calibration Configuration error (data not received) Not applicable DTC Stored Applicable
  • Drive cycle: Not applicable
  • Self test type: CMDTC self test, OD DTC self test
U2300-55 Central Configuration Not Configured Configuration error (not configured) Not applicable Not applicable Applicable
  • Drive cycle: Not applicable
  • Self test type: CMDTC self test, OD DTC self test
U2300-56 Central Configuration Invalid / Incompatible (ISO/SAE reserved) Configuration error (ineffective/ non-interchangeable data read) Not applicable DTC Stored Applicable
  • Drive cycle: Not applicable
  • Self test type: CMDTC self test, OD DTC self test
U2300-64 Central Configuration Signal plausibility failure Configuration error (error value read) Not applicable DTC Stored Applicable
  • Drive cycle: Not applicable
  • Self test type: CMDTC self test, OD DTC self test
DTC Detection Condition
  • U2300-54: Configuration error (data not received)
  • U2300-55: Configuration error (not configured)
  • U2300-56: Configuration error (ineffective/non-interchangeable data read)
  • U2300-64: Configuration error (error value read)
Air conditioning amplifier detects configuration data not record or data error
Fail-safe Operation Sets the configuration value to the fixed value
Trouble Area HINT: 
  • If power from the battery is interrupted, the air conditioning amplifier will go into a non-configured state because the memory for the configuration information is erased.
  • Normally, the configuration is re-performed within 6 s after the ignition is switched ON (engine off).
  • After performing the configuration, DTC U230055 will be cleared if the ignition is switched ON (engine off) after the ignition is switched off.
  • Module configuration procedure was not completed properly
  • Correct data cannot be received from combination meter
  • Air conditioning amplifier malfunction