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                                                                                                                       DI-679
                                             DIAGNOSTICS        -   BODY CONTROL SYSTEM
                                                                                                                           DI6LV-03




 Wireless door lock tuner circuit

CIRCUIT DESCRIPTION
The signal from the transmitter will be input to the body ECU through RDA line. RDA line is diagnosed by
the Body ECU, so check DTC also in case of the failure of the wireless function.
WIRING DIAGRAM
                                                                    W5                                      Body ECU
                                                                    Wireless Door                           (Integration
                                                                    Control Receiver                        Relay)
                       J/C
                  A          A          W-B
          W-B
                  J2         J3                                                                       15
                                                                    1                       G-R
                                                                                                     I16     PRG
                                                                                       2


                Driver Side J/B NO.1                                                                   14
                                                 J18                                        G-Y
                                                 J/C                                                  I16 RDA
                  3               10                                                   4
                                       R                   R
                 1W               1V
                                             A         A            7


            R-W
                                                                                                       5
                                                                                             W-B
                             Engine Room J/B NO.2                                                     I16 LSDS
                  12          DOME     SHORT PIN             3
                  2J                                        2B
                                       2          1

                                                                            W
                                                                                10 IC3
                                              FL
                                              MAIN                      D

                                                                B-L
                                                                                           W-B




     IJ                            Battery                 BK                          BM




                                                                                                                             I18891




2001 SIENNA (RM787U)

                                                                            Author :               Date :                  833
DI-680
                                       DIAGNOSTICS   -   BODY CONTROL SYSTEM

INSPECTION PROCEDURE

   1     Check that DTC 42 is not output.


                                              NG         Check the RDA line.


   OK



   2     Check wireharness.

PREPARATION:
Disconnect connectors of wireless door lock tuner and Body ECU.
CHECK:
Check continuity between terminals PRG of wireless door lock tuner and PRG of Body ECU.
OK:
     Continuity

                                              NG         Repair or replace wireharness.


   OK



   3     Check the wireless door lock tuner.

CHECK:
Replace the wireless door lock tuner and check if it recovers normally.
OK:
     Must be recovered normally.

                                              NG         Proceed to next circuit inspection shown on
                                                         problem symptoms table (See page DI-636 ).


   OK



  Failure of the original wireless door lock tun-
  er.




2001 SIENNA (RM787U)

                                                               Author :           Date :         834

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