DESCRIPTION This DTC is stored if the transponder key ECU assembly does not detect that the unlock warning switch assembly is on even when the ignition switch is ON.
WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
(a) Clear the DTCs. Click here
(a) Check for DTCs. Click here HINT: Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure. OK: DTC B2780 is not output.
(a) Remove the unlock warning switch assembly. Click here (b) Inspect the unlock warning switch assembly. Click here
(a) Disconnect the J18 unlock warning switch assembly connector. (b) Disconnect the J26 transponder key ECU assembly connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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Toyota Tundra Owners Manual > Do-it-yourself maintenance: Checking and replacing
fuses
If any of the electrical components do not operate, a fuse may have blown. If this happens, check and replace the fuses as necessary. 1. Turn the engine switch off. 2. Open the fuse box cover. Engine compartment Push the tab in and lift the cover off. Under the instrument panel Remove the cover. 3. ...