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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 272 (Engine Immobilizer System) >> Diagnostic Tests >> DTC B2796/99: No Communication In Immobilizer System >> Inspection Procedure

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 And Insert All The Presently Available Keys To Check Whether The Engine Starts Or Not. 

    RESULT: 

    Fig 1: Charting Step 1 Results For DTC B2796/99
    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 step  2.
  2. INSPECT TRANSPONDER KEY COIL CONTINUITY  . 
    1. NG:  Replace transponder key coil.
    2. OK:  Go to step  3.
  3. Check Harness And Connector Between Transponder Key Amplifier And ECM. 
    1. NG:  Repair or replace harness and connector.
    2. OK:  Go to step  4.
  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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