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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 272 (Engine Immobilizer System) >> Diagnostic Tests >> DTC B2798/99: Communication Malfunction No. 2 >> 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. Check  INSPECT TRANSPONDER KEY COIL CONTINUITY  . 
    1. NG:  Replace transponder key coil.
    2. OK:  Go to step  2.
  2. Check Harness And Connector Between Transponder Key Amplifier And ECM. 
    1. NG:  Repair or replace harness and connector.
    2. OK:  Go to step  3.
  3. Does The System Operate Normally After Replacement Of Transponder Key Amplifier? 
    1. Yes:  Replace transponder key amplifier.
    2. No:  Replace ECM.
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