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05-1442
                                        DIAGNOSTICS       -   REAR SEAT ENTERTAINMENT SYSTEM                     05ATU-04




POWER SOURCE CIRCUIT(TELEVISION DISPLAY ASSY)

CIRCUIT DESCRIPTION
This circuit is the power source circuit to operate the television display assy. The power source is sent from
the battery to the television display assy through the multi-display controller sub-assy.
WIRING DIAGRAM
                                                                                                 Multi-display
   R25                                                                                           Controller
   Television Display Assy                                                                       Sub-assy

                                                      Y                                    1
                     1
                +B                                                                        R28 +B2

                                                    LG                                     2
                     2
              ACC                                                                         R28 ACC2

                                                                                           6
                     6                                Y
              GND                                                                         R28 GND1



                                                                                                                   I35020




 2005 SIENNA REPAIR MANUAL (RM1163U)

                                                                    Author :            Date :                     1625
                                                                                                                               05-1443
                                           DIAGNOSTICS        -   REAR SEAT ENTERTAINMENT SYSTEM

INSPECTION PROCEDURE
      1      INSPECT TELEVISION DISPLAY ASSY(+B, ACC, GND)

                                                  (a)       Disconnect the television display assy connector.
                                                  (b)       In order to check for an open circuit, measure the resis-
                                                            tance between the terminals according to the condition,
                                                            as shown in the chart.
                                                            Standard:
                                                         Tester connection                 Condition               Specified condition
                                  +B
                                                        GND - Body ground                   Always                     Below 1 
           GND                                    (c)       Check the voltage between the terminals according to the
                               ACC
                                         I35014             conditions, as shown in the chart.
                                                            Standard:
                                                         Tester connection                 Condition               Specified condition
                                                            +B - GND                        Always                     10 to 14 V
                                                            ACC - GND                   Ignition SW ACC                10 to 14 V

                                                    OK            REPLACE TELEVISION DISPLAY ASSY

      NG

      2      CHECK HARNESS AND CONNECTOR(TELEVISION DISPLAY ASSY -
             MULTI-DISPLA Y CONTROLLER SUB-ASSY)

(a)       Check for an open or short circuit in harness and connector between the television display assy and
          multi-display controller sub-assy (See page 01-37 ).
                                                    NG            REPAIR OR                  REPLACE               HARNESS           OR
                                                                  CONNECTOR

      OK

      3      CHECK FOR PROBLEM SYMPTOMS TABLE

(a)       Check problem symptoms table (See page 05-1425 ).
          Result:
                         A                                                       Suspected areas are cleared
                         B                                                        Suspected areas still exist

                                                        B         PROCEED TO NEXT CIRCUIT INSPECTION
                                                                  SHOWN IN PROBLEM SYMPTOMS TABLE
                                                                  (See page 05-1425 )

      A

  REPLACE MULTI-DISPLA Y CONTROLLER SUB-ASSY




 2005 SIENNA REPAIR MANUAL (RM1163U)

                                                                             Author :                     Date :                    1626

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