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                                                                                                                        05-1543
                                                DIAGNOSTICS    -      COMBINATION METER                                   05BW2-02




MALFUNCTION IN WATER TEMPERATURE RECEIVER GAUGE

WIRING DIAGRAM
  A21                             Driver Side J/B
                                                                                                       C10
  Airbag Sensor                   (Body ECU)
                                                                                                       Combination Meter Assy
  Assy
                            7                                                                   J19
           22                     14
     MPX2                  1E          MPX1                                                     J/C
              R-L                                 21
                                                                                          13          33 29
                                       MPX2      B7
               24                                                           R-L                        R-L
      MPX1




                                                                                  A9
                                                                                  A/C Control     J19
                                                                                  Assy            J/C
      R-L                                                                                   62            32 28
                                                 E5                   J19           MPX+ 2
                                                                                           V                V
                                                 ECM                  J/C
                                                           90               70 3
                Driver Side J/B                   MPX1 18                        MPX-
                                                        R-L                  R-L
               6            32
                                           29
               1E           1H                  MPX2
                                       V




                                                                                                                           I46067




INSPECTION PROCEDURE
      1      PERFORM ACTIVE TEST BY HAND-HELD TESTER(COMBINATION METER)

(a)       Operate the hand-held tester according to the steps on the display and perform the "ACTIVE TEST".
                    Item                               Test Details                                   Diagnostic Note
             COOLANT TEMP              LOW / NORM / HIGH                                                       -

                                                       NG          CHECK AND REPLACE COMBINATION METER
                                                                   ASSY

      OK




 2005 SIENNA REPAIR MANUAL (RM1163U)

                                                                             Author :                 Date :              1726
05-1544
                                            DIAGNOSTICS       -     COMBINATION METER

      2      READ VALUE OF HAND-HELD TESTER(COMBINATION METER)

(a)       Operate the hand-held tester according to the steps on the display and select "DATA LIST".
                  Item                               Test Details                       Diagnostic Note
                COOLANT             Coolant Temperature / Min.: -40_C, Max.: 140_C            -

                                                      NG          GO TO ENGINE CONTROL SYSTEM

      OK

      3      CHECK THAT MALFUNCTION DISAPPEARS A KNOWN GOOD COMBINATION
             METER IS INSTALLED

                                                      NG          CHECK AND REPLACE ECM

      OK

  CHECK AND REPLACE COMBINATION METER ASSY




 2005 SIENNA REPAIR MANUAL (RM1163U)

                                                                          Author :      Date :            1727

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