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 > Power Tilt And Power Telescopic Steering Column System: ECU Power Source Circuit Malfunction (B2620)
DESCRIPTION The ECU power source circuit supplies positive (+) voltage to the multiplex tilt and telescopic ECU. DTC Code Detection Condition Trouble Area B2620 The voltage of the ECU power source drops to 8 V or less and this condition continues for 10 seconds or more. ECU-DCC NO. 2 fuse Harness or ...