DESCRIPTION The skid control ECU (brake actuator assembly) receives signals from the yaw rate and acceleration sensor (airbag sensor assembly) via CAN communication. The airbag sensor assembly has a built-in yaw rate and acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2). If a communication error with the yaw rate and acceleration sensor (airbag sensor assembly) is detected, DTCs U0123 (Lost Communication with Yaw Rate Sensor Module) is stored. The DTCs are also stored when the calibration has not been completed.
CAUTION / NOTICE / HINT NOTICE:
HINT: When U0123 is output together with C1336, inspect and repair the trouble areas indicated by U0123 first. Click here PROCEDURE
(a) Turn the ignition switch off. (b) Check that the yaw rate and acceleration sensor (airbag sensor assembly) has been installed properly. for Column Shift Type: Click here for Floor Shift Type: Click here
OK: The yaw rate and acceleration sensor (airbag sensor assembly) is tightened to the specified torque. The yaw rate and acceleration sensor (airbag sensor assembly) is not installed in a tilted position.
(a) Enter the following menus: Chassis / ABS/VSC/TRAC / Utility / Test Mode. Click here (b) Perform zero point calibration of the yaw rate and acceleration sensor. Click here
(a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List. ABS/VSC/TRAC
(d) Check the yaw rate and acceleration sensor (airbag sensor assembly) output value displayed on the Techstream. OK: The yaw rate and acceleration sensor (airbag sensor assembly) output value is normal.
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Toyota Tundra Service Manual > Trailer Brake Control System: Precaution
PRECAUTION 1. TROUBLESHOOTING PRECAUTIONS (a) When there is a malfunction in the contact point of the terminals or installation problems with parts, removal and installation of the suspected problem parts may return the system to the normal condition either completely or temporarily. (b) To determin ...
