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Home >> Mazda >> 2013 >> 5 Grand Touring >> Repair and Diagnosis >> Steering >> Electronic Steering >> On-Board Diagnostic [Steering System] >> DTC U2023 >> Notes

DTC U2023: Notes

DTC U2023 Signal error from PCM
DETECTION CONDITION 
  • Error detected in signal from PCM via CAN communication
FAIL-SAFE FUNCTION 
  • Motor is stopped: Engine speed and vehicle speed assimilation stops. After the motor is restarted, vehicle speed is set at 200 km/h {124 mph} and engine speed is set at 1,000 rpm, and control continues.

    Motor is rotating: Controlled vehicle speed is increased to 20 km/h {12 mph} per s until it is set at 200 km/h {124 mph}, engine speed is set at 1,000 rpm, and control continues.

  • Power steering malfunction indicator light: Illuminated
POSSIBLE CAUSE 
  • PCM malfunction
  • EHPAS CM malfunction
SYSTEM WIRING DIAGRAM  -