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Inspection Procedure

WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Delete DTC & Insert All The Presently Available Keys To Check Whether The Engine Starts Or Not  .
    Fig 1: Identifying DTC B2796/99 Key Test Results
    G01119438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE: If the result is "A", please confirm whether or not customers have ever inserted the key (without transponder chip) of other vehicle in the ignition key cylinder, and find out the cause of detecting DTC.
    1. A  : No problem at this time.
    2. B  : The transponder chip of a specific key is defective. Replace the key.
    3. C  : Go to next step.
  2. Check transponder key coil  . See INSPECT TRANSPONDER KEY COIL CONTINUITY .
    1. NG  : Replace transponder key coil.
    2. OK  : Go to next step.
  3. Check Harness & Connector Between Transponder Key Amplifier & ECM  .
    1. NG  : Repair or replace harness and connector.
    2. OK  : Go to next step.
  4. Does It Operate Normally After Replacement Of Transponder Key Amplifier  ?
    1. Yes  : Replace transponder key amplifier.
    2. No  : Replace ECM.
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