REMOVAL PROCEDURE 1. PRECAUTION NOTICE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work. Click here 2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTICE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Click here 3. REMOVE FRONT DOOR SCUFF PLATE LH (a) for Double Cab: Click here (b) for CrewMax: Click here 4. REMOVE COWL SIDE TRIM BOARD LH (a) for Double Cab: Click here (b) for CrewMax: Click here 5. REMOVE INSTRUMENT SIDE PANEL LH (a) for Column Shift Type: Click here (b) for Floor Shift Type: Click here 6. REMOVE LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY LH (a) for Column Shift Type: Click here (b) for Floor Shift Type: Click here 7. REMOVE LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY Click here 8. REMOVE GLASS BREAKAGE SENSOR ECU 
(a) Disconnect each connector. (b) Remove the 2 nuts and junction block.
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Toyota Tundra Service Manual > Lane Departure Alert System: Lost Communication with Yaw Rate Sensor Module (U0123,U0126,U0129,U0142,U0155)
DESCRIPTION These DTCs are output when a communication malfunction occurs between the sensors and ECUs. DTC No. Detection Item DTC Detection Condition Trouble Area U0123 Lost Communication with Yaw Rate Sensor Module 3 seconds after the ignition switch is turned to ON, the vehicle is being driven at ...
