DESCRIPTION The transponder key ECU assembly blinks the security indicator light when the engine immobiliser is set. WIRING DIAGRAM ![]() CAUTION / NOTICE / HINT NOTICE: If the transponder key ECU assembly is replaced, refer to Registration. Click here PROCEDURE
(a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Immobiliser / Active Test. (e) Perform the Active Test according to the display on the Techstream. Immobiliser
OK: Security indicator light can be turned on and off using the Techstream.
(a) Disconnect the J26 transponder key ECU assembly connector. (b) Disconnect the J28 combination meter assembly (security indicator light) connector. (c) Disconnect the J165 main body ECU (multiplex network body ECU) connector. (d) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Connect the J26 transponder key ECU assembly connector.
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Toyota Tundra Service Manual > Theft Deterrent System: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use these procedures to troubleshoot the theft deterrent system. *: Use the Techstream. Troubleshooting of the theft deterrent system is based on the premise that the door lock control system, the wireless door lock control system, the lighting system, the horn system, ...