Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1996-2003 Approved SIL techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 024runne di eisy cib27989

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                                                                                                             DI-509
                                           DIAGNOSTICS    -    ENGINE IMMOBILISER SYSTEM
                                                                                                              DI1KQ-08




   DTC           B2798/99 Communication Malfunction No. 2

CIRCUIT DESCRIPTION
   DTC No.                    DTC Detection Condition                                       Trouble Area
                                                                    S Key
                                                                    S Transponder key coil
   B2798/99    Communication error                                  S Transponder key amplifier
                                                                    S Wire harness
                                                                    S ECM


WIRING DIAGRAM



    T6                                                                                                 ECM
    Transponder Key Amplifier


                                                                                      5
                    CODE      2                         GR-R                                 CODE
                                                                                    E14




                                                                                     18
                              3                         R-B                         E14
                    RXCK                                                                     RXCK




                                                                                     19
                              4                          P-B
                    TXCT                                                            E14 TXCT




                                                                                                                I03114




2002 4RUNNER (RM887U)

                                                                     Author :                     Date :      685
DI-510
                                  DIAGNOSTICS   -   ENGINE IMMOBILISER SYSTEM

INSPECTION PROCEDURE

   1     Check transponder key coil (See page BE-172 ).


                                        NG          Replace transponder key coil.


  OK



   2     Check harness and connector between transponder key amplifier and ECM (See
         page IN-28 ).


                                        NG          Repair or replace harness or connector.


  OK



   3     Does it operate normally after replacement of transponder key amplifier?


                                        Yes         Replace transponder key amplifier.


   No



  Replace ECM.




2002 4RUNNER (RM887U)

                                                           Author :             Date :        686



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