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Home >> Lexus >> 2002 >> SC 430 >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Abs With EBD & BA & TRAC & VSC System - Diagnosis >> DTC C1233/33: Yaw Rate Sensor Circuit, DTC C1234/34: Malfunction In Yaw Rate Sensor >> Circuit Description

Circuit Description

DTC TROUBLE DETECTION

DTC No. DTC Detecting Condition Trouble Area
C1233/33 When any of the following 1. through 4. is detected:
  1. ECU terminal IG1 voltage is 9.5 V to 17.0 V, and the condition that yaw rate sensor voltage is out of the range from 0.25 V to 4.75 V continued for 1 sec. or more.
  2. The conditions that yaw rate sensor open detect circuit signal is ON and the voltage of ECU terminal IG1 is 9.5 to 17 V continued for 1 sec. or more.
  3. The conditions that yaw rate sensor power source voltage is out of the range from 4.4 V to 5.6 V and the voltage of ECU terminal IG1 is 9.5 to 17 V continued for 1 sec. or more.
  4. When the condition that yaw rate sensor signal is momentarily open occurs 10 times or more and the voltage of ECU terminal IG1 is 9.5 to 17 V.
  • Yaw rate sensor
  • Yaw rate sensor circuit
C1234/34 When the condition that yaw rate sensor VYS terminal voltage is 4.75 V to 5.25 V and YD malfunction signal of yaw rate sensor is ON continued for 5 sec. or more.