CAUTION / NOTICE / HINT HINT: If the operation of a cellular phone or the radio and display receiver assembly is requested, make sure to follow the instructions closely and perform the operation. PROCEDURE
(a) Check that the vehicle and cellular phone meet the following conditions: NOTICE: If changing cellular phone settings, updating software, etc. is necessary, make sure to obtain the permission of the customer before performing it.
(b) Register the cellular phone again and check if it is registered correctly. HINT: If operation of the cellular phone or radio and display receiver assembly is requested, make sure to follow the instructions closely and perform the operation. OK: The cellular phone is registered correctly.
(a) Turn the ignition switch off. (b) Turn the ignition switch to ACC. (c) Register the cellular phone as a connected device again and check if it is registered correctly. HINT: If operation of the cellular phone or radio and display receiver assembly is requested, make sure to follow the instructions closely and perform the operation. OK: The cellular phone is registered correctly.
(a) Place the cellular phone close to the radio and display receiver assembly. (b) Register the cellular phone as a connected device again and check if it is registered correctly. HINT: If operation of the cellular phone or radio and display receiver assembly is requested, make sure to follow the instructions closely and perform the operation. OK: The cellular phone is registered correctly.
(a) Clear all "Bluetooth" devices registered to the cellular phone and radio and display receiver assembly. (b) Register the cellular phone as a connected device again and check if it is registered correctly. HINT: If operation of the cellular phone or radio and display receiver assembly is requested, make sure to follow the instructions closely and perform the operation. OK: The cellular phone is registered correctly.
(a) Check if the cellular phone can be registered normally to another "Bluetooth" audio compatible vehicle of the same model. HINT:
OK: The cellular phone is registered correctly. Result
(a) Using another "Bluetooth" compatible cellular phone, register the cellular phone and check that it is registered correctly. HINT:
OK: The cellular phone is registered correctly. Result
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Toyota Tundra Service Manual > Cruise Control System: Lost Communication With Vehicle Dynamics Control Module (U0122)
DESCRIPTION The ECM receives signals from the skid control ECU (brake actuator assembly) via CAN communication. DTC No. Detection Item DTC Detection Condition Trouble Area U0122 Lost Communication with Vehicle Dynamics Control Module While the vehicle speed is 40 km/h (25 mph) or more and the cruise ...