4 Runner 2WD L4-2.7L (2TR-FE) (2010)
Antenna - Keyless Entry: Testing and Inspection
THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function): Room Oscillator does not Recognize Key
- Room Oscillator does not Recognize Key
DESCRIPTION
If the room oscillator does not recognize the key, one of the following may be the cause: 1) communication between the indoor No. 1 electrical key
antenna (front floor) and electrical key transmitter cannot be performed; 2) communication between the indoor No. 2 electrical key antenna (rear floor)
and electrical key transmitter cannot be performed; or 3) communication between the indoor No. 2 electrical key antenna (inside luggage) and electrical
key transmitter cannot be performed.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
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The smart key system (for Entry Function) uses a multiplex communication system (LIN communication system) and the CAN
communication system. Inspect the communication function by following How to Proceed with Troubleshooting See: Accessories
and Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Smart
Key System (for Entry Function)/How To Proceed With Troubleshooting. Troubleshoot the smart key system (for Entry Function)
after confirming that the communication systems are functioning properly.
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When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy
light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.
*
Before replacing the certification ECU, refer to the engine immobiliser system (w/ Smart Key System) See: Accessories and
Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Programming and Relearning/Engine Immobiliser
System (w/ Smart Key System).
PROCEDURE
1. CHECK SMART KEY SYSTEM (START FUNCTION)
(a) Remove the battery of the electrical key transmitter See: Keyless Entry Transmitter/Keyless Entry Transmitter Battery/Service and
Repair/Transmitter Battery (w/ Smart Key System).
(b) With the brake pedal depressed, touch the TOYOTA mark of the key to the engine switch.
(c) When operating the engine switch, check whether the power source mode changes.