Inspection Procedure
WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
When replacing the yaw rate and acceleration sensor, perform zero point calibration. Refer to CALIBRATION .
HINT:
When DTC U0123, U0124 and/or U0126 is output together with DTC C1420, inspect and repair the trouble areas indicated by DTC U0123, U0124 and/or U0126 first. Refer to DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0124: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module .