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Home >> Lexus >> 2010 >> LS 600hL >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Air Suspension (Diagnostic Codes & Circuit Tests) >> Air Suspension System >> DTC C1711: Front Height Control Sensor RH Circuit Malfunction; DTC C1712: Front Height Control Sensor LH Circuit Malfunction; DTC C1713: Rear Height Control Sensor RH Circuit Malfunction; DTC C1714: Rear Height Control Sensor LH Circuit Malfunction >> Description

DTC C1711: Front Height Control Sensor RH Circuit Malfunction; DTC C1712: Front Height Control Sensor LH Circuit Malfunction; DTC C1713: Rear Height Control Sensor RH Circuit Malfunction; DTC C1714: Rear Height Control Sensor LH Circuit Malfunction: Description

The height control sensor changes its resistance value based on changes in vehicle height. The suspension control ECU outputs a fixed voltage of 5 V to the height control sensor's SHB terminal. If the sensor's resistance value changes, the sensor's voltage value changes accordingly. The suspension control ECU then inputs the voltage value from the sensor to detect the vehicle height change.

DTC Code Detection Condition Trouble Area
C1711 With the power switch ON (IG), a voltage of 4.7 V or more, or 0.3 V or less at front height control sensor RH is detected for 1 second.
  • Harness or connector
  • Front height control sensor RH
  • Suspension control ECU
C1712 With the power switch ON (IG), a voltage of 4.7 V or more, or 0.3 V or less at front height control sensor LH is detected for 1 second.
  • Harness or connector
  • Front height control sensor LH
  • Suspension control ECU
C1713 With the power switch ON (IG), a voltage of 4.7 V or more, or 0.3 V or less at rear height control sensor RH is detected for 1 second.
  • Harness or connector
  • Rear height control sensor RH
  • Suspension control ECU
C1714 With the power switch ON (IG), a voltage of 4.7 V or more, or 0.3 V or less at rear height control sensor LH is detected for 1 second.
  • Harness or connector
  • Rear height control sensor LH
  • Suspension control ECU