Toyota 4Runner manuals

Toyota 4Runner: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Smart Key System

Symptom

Suspected Area

See page

All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate

Power door lock control system


Electrical key transmitter


Transmitter battery


Door control receiver


Certification ECU


Harness or connector


All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate

Electrical key transmitter


Certification ECU


Driver Side Door Entry Unlock Function does not Operate

Power door lock control system


Front door outside handle assembly (for driver side)


Certification ECU


Harness or connector


Front Passenger Side Door Entry Unlock Function does not Operate

Power door lock control system


Front door outside handle assembly (for front passenger side)


Certification ECU


Harness or connector


Driver Side Door Entry Lock and Unlock Functions do not Operate

Power door lock control system


Front door outside handle assembly (for driver side)


Certification ECU


Harness or connector


Front Passenger Side Door Entry Lock and Unlock Functions do not Operate

Power door lock control system


Front door outside handle assembly (for front passenger side)


Certification ECU


Harness or connector


Driver Side Door Entry Lock Function does not Operate

Power door lock control system


Front door outside handle assembly (for driver side)


Certification ECU


Harness or connector


Front Passenger Side Door Entry Lock Function does not Operate

Power door lock control system


Front door outside handle assembly (for front passenger side)


Certification ECU


Harness or connector


Room Oscillator does not Recognize Key

Smart key system (for Start Function)


Indoor No. 1 electrical key antenna (front floor)


Indoor No. 2 electrical key antenna (rear floor)


Indoor No. 2 electrical key antenna (inside luggage)


Certification ECU


Harness or connector


Electrical key transmitter


Entry Interior Alarm does not Sound

Meter/gauge system


Certification ECU


Back Door Entry Unlock Function does not Operate

Power door lock control system


Back door control switch


Certification ECU


Harness or connector


Back Door Entry Lock and Unlock Functions do not Operate

Power door lock control system


Electrical key antenna (outside luggage)


Certification ECU


Harness or connector


Back Door Entry Lock Function does not Operate

Power door lock control system


Back door control switch


Certification ECU


Harness or connector


Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Smart Key / ...

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK CERTIFICATION ECU (a) Disconnect the F79 certification ECU connector. (b) Measure the voltage and resistance according to the value(s) in the table below. ...

Other materials about Toyota 4Runner:

Back Door Entry Lock Function does not Operate
DESCRIPTION If the back door entry lock function does not operate but the back door unlock function operates, the communication line between the vehicle and electrical key transmitter is normal. The entry lock switch circuit (back door control switch → ...

Registration
REGISTRATION PROCEDURE 1. DESCRIPTION OF CODE REGISTRATION The key has 2 codes: the key code (immobiliser code) and the wireless code (recognition code). Both of these codes need to be registered. For wireless code registration procedures, refer to the ...

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