CAUTION / NOTICE / HINT HINT:
PROCEDURE
Standard Voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding.
(a) Using the Techstream, inspect the CAN communication function to ensure there are no malfunctions in the CAN communication system. Click here
(a) Check for DTCs. Click here (b) Clear the DTCs. Click here (c) Recheck for DTCs. Click here
(a) Refer to the problem symptoms table. Click here
(a) Terminals of ECU Click here (b) Data List / Active Test Click here
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Toyota Tundra Service Manual > Lighting System: Lost Communication With Image Processing Module "A" (U023A)
DESCRIPTION These DTCs are stored when the CAN communication system is malfunctioning. DTC No. Detection Item DTC Detection Condition Trouble Area U023A Lost Communication With Image Processing Module "A" The main body ECU (multiplex network body ECU) does not receive data from the forward ...