Inspection INSPECTION PROCEDURE 1. INSPECT FUEL TANK CAP ASSEMBLY (a) Visually check if the cap and/or gasket are deformed or damaged.  Text in Illustration
If the result is not as specified, replace the fuel tank cap assembly or gasket.  NOTICE: Confirm that ID mark S is printed on the replacement fuel tank cap. Text in Illustration
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Toyota Tundra Service Manual > Trailer Brake Control System: Power Supply Voltage Circuit (C1241)
DESCRIPTION If a malfunction is detected in the power supply circuit, the trailer brake control ECU (brake control with bracket relay) stores this DTC. DTC No. Detection Item INF Code DTC Detection Condition Trouble Area C1241 Power Supply Voltage Circuit 81 82 INF Code: 81 (Low power supply voltage ...
