DESCRIPTION When the forward recognition camera is replaced with a new one, the new forward recognition camera attempts to store the country specification information received from the main body ECU (multiplex network body ECU). If the forward recognition camera cannot store the country specification information, DTC C1AAA is stored.
CAUTION / NOTICE / HINT NOTICE:
HINT: This DTC is stored when the forward recognition camera cannot store the country specification information received from the main body ECU (multiplex network body ECU). If the forward recognition camera or main body ECU (multiplex network body ECU) has been replaced, check if a forward recognition camera or main body ECU (multiplex network body ECU) from another vehicle was used. PROCEDURE
HINT: The forward recognition camera communicates with the main body ECU (multiplex network body ECU) via CAN communication. Confirm that the CAN communication system is functioning normally before proceeding. (a) Check for DTCs. Click here
(a) Clear the DTCs. Click here (b) Make sure that the DTC detection conditions are met. HINT: If the conditions are not met, the system cannot detect the malfunction. (c) Check for DTCs. Click here
(a) Replace the forward recognition camera. Click here (b) Perform forward recognition camera axis adjustment. Click here
(a) Clear the DTCs. Click here (b) Make sure that the DTC detection conditions are met. HINT: If the conditions are not met, the system cannot detect the malfunction. (c) Check for DTCs. Click here
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Toyota Tundra Service Manual > Meter / Gauge System: Communication with BODY ECU (Receive) (U0142)
DESCRIPTION The combination meter assembly communicates with the main body ECU (multiplex network body ECU) via the CAN line. DTC Code DTC Detection Condition Trouble Area U0142 When either of following conditions is detected: IG voltage 10.5 V or more No communication with main body ECU (multiplex ...