Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 acsy civehicl

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DI-752
                                      DIAGNOSTICS   -   AIR CONDITIONING SYSTEM
                                                                                                         DI3WE-06




 Vehicle Speed Signal Circuit

CIRCUIT DESCRIPTION
This A/C control assembly monitors the vehicle speed through signals sent from the speed sensor. The A/C
control assembly uses these signals to revice the ambient temperature sensor signal.
WIRING DIAGRAM




            Combination Meter                                                     A/C Control Assembly


                                                J/B No. 3
                         11              13                    12                 14
                                V-Y                                   LG-B
                         C10             3A                    3A                 A25 SPD




                                                                                                           I21123




INSPECTION PROCEDURE

   1     Check operation of speedometer.

CHECK:
Check that the tachometer operates normally.

                                               NG       Proceed to combination meter troubleshooting
                                                        (See page BE-2 ).


  NG



2001 SIENNA (RM787U)

                                                               Author :              Date :                906
                                                                                             DI-753
                                 DIAGNOSTICS   -   AIR CONDITIONING SYSTEM



  2     Check harness and connector between A/C control assembly and combination
        meter (See page IN-31 ).


                                        NG         Repair or replace harness or connector.


  OK



 Check and replace A/C control assembly.




2001 SIENNA (RM787U)

                                                         Author :            Date :           907



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