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05-1586
                                         DIAGNOSTICS   -   POWER DOOR LOCK CONTROL SYSTEM


POWER DOOR LOCK CONTROL SYSTEM
                                                                                                 05BYS-01


HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
Troubleshoot in accordance with the procedures on the following pages.
      1      VEHICLE BROUGHT TO WORKSHOP




      2      CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK




      3      INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMU-
             NICATION SYSTEM (BEAN)

(a)       Use the hand-held tester to check for normal function of the multiplex communication system.
          (1) (ECU unconnected, communication line malfunctioning) Without code outputs, proceed to A.
          (2) (ECU unconnected, communication line malfunctioning) With code outputs, proceed to B.
                                                 B         Go to MULTIPLEX COMMUNICATION SECTION
                                                           (See page 05-1876 )

      A

      4      PROBLEM SYMPTOMS TABLE (See page 05-1599 )

(a)       When problem is not listed on problem symptoms table, proceed to A.
(b)       When problem is listed on problem symptoms table, proceed to B.
                                                 B         Go to step 6

      A

      5      PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM

(a)       Pre-check (See page 05-1589 ).
          (1) Inspection with the hand-held tester (ECU DATA LIST).
          (2) Inspection with the hand-held tester (ACTIVE TEST).
(b)       On-vehicle inspection (See page 73-1 ).
(c)       Inspection (See page 73-3 ).
(d)       Terminals of ECU (See page 05-1595 ).



      6      ADJUST, REPAIR OR REPLACE




 2005 SIENNA REPAIR MANUAL (RM1163U)

                                                                  Author :          Date :         1769
                                                                                         05-1587
                                      DIAGNOSTICS   -   POWER DOOR LOCK CONTROL SYSTEM

  7     CONFIRMATION TEST




 END




2005 SIENNA REPAIR MANUAL (RM1163U)

                                                             Author :           Date :     1770

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