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 Service Manual > Back Window Glass(for Double Cab): Components
COMPONENTS ILLUSTRATION *1 REAR DOOR OPENING TRIM WEATHERSTRIP LH *2 REAR DOOR OPENING TRIM WEATHERSTRIP RH *3 REAR DOOR SCUFF PLATE LH *4 REAR DOOR SCUFF PLATE RH ILLUSTRATION *1 FRONT QUARTER TRIM PANEL ASSEMBLY LH *2 FRONT QUARTER TRIM PANEL ASSEMBLY RH *3 LOWER QUARTER TRIM PANEL ASSEMBLY LH *4 ...