Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 acsy cidtc12

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                                                                                                                                DI-703
                                                  DIAGNOSTICS        -   AIR CONDITIONING SYSTEM
                                                                                                                                  DI3F5-04




    DTC                      12              Ambient Temperature Sensor Circuit

CIRCUIT DESCRIPTION
This sensor detects the ambient temperature and sends the appropriate signals to the A/C control assembly.
  DTC No.                             Detection Item                                                Trouble Area
                                                                             S Ambient temperature sensor
                                                                             S Harness or connector between ambient temperature sensor
     12       Open or short in ambient temperature sensor circuit.
                                                                               and A/C control assembly
                                                                             S A/C control assembly

WIRING DIAGRAM

                                                                                  A/C control assembly
                                                                                  2
                                                         O
                                                                                 A23 TAM

                        16 IK3

                                  O
                              2
            A22
            A/C Ambient
            Temp. Sensor
                              1
                                  BR-R
                                                       J7
                        15     IK3                     J/C
                                                                                  12
                                                 C            C
                                                                                 A23 SG
                                      BR-R                           BR-R

                                                                                                                                    I21111




2001 SIENNA (RM787U)

                                                                               Author :                  Date :                   857
DI-704
                                       DIAGNOSTICS   -   AIR CONDITIONING SYSTEM

INSPECTION PROCEDURE

   1     Check voltage between terminals TAM and SG of A/C control assembly.

                                             PREPARATION:
          ON                  TAM            Remove A/C control assembly with connectors still connected.
                                             CHECK:
                                             (a) Turn ignition switch to ON.
                                             (b) Measure voltage between terminals TAM and SG of A/C
                                                   control assembly connector at each temperature.
                                             OK:
                                                   Voltage :
    SG
                       (-)   (+)    I20983         at 25

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