Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 acsy cidtc26

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DI-724
                                                   DIAGNOSTICS        -    AIR CONDITIONING SYSTEM
                                                                                                                                          DI3FE-05




    DTC                    26                Rear Heater Intake Air Temperature Sensor
                                             Circuit

CIRCUIT DESCRIPTION
This sensor detects the rear heater intake air temperature and sends the appropriate signals to the A/C con-
trol assembly.
   DTC No.                              Detection Item                                                    Trouble Area
                                                                                  S Rear heater intake air temperature sensor
                                                                                  S Harness or connector between rear heater intake air temper-
     26      Open or short in rear inlet air temperature sensor circuit.
                                                                                    ature sensor and A/C cotrol assembly
                                                                                  S A/C cotrol assembly

WIRING DIAGRAM

                                                                                          A/C cotrol assembly
                                                          16                            10
                                          LG                               LG
                                                          II2                           A23 TINH

                                   1
     R28
     Rear Intake Air Temp.
     Sensor
                                    2
                                   BR-R
                              A
                        J23
                        J/C
                              A
                                                           13                           12
                                        BR-R                               BR-R
                                                          II2                           A33 SG


                                                                                                                                            I21126




 2001 SIENNA (RM787U)

                                                                                     Author :                    Date :                     878
                                                                                                       DI-725
                                            DIAGNOSTICS   -   AIR CONDITIONING SYSTEM

INSPECTION PROCEDURE

  1     Check voltage between terminals TINH and SG of A/C cotrol assembly connec-
        tor.

                                   TINH
                                                   PREPARATION:
             ON                                    Remove A/C cotrol assembly with connectors still connected.
                                                   CHECK:
                                                   (a) Turn ignition switch to ON.
                                                   (b) Measure voltage between terminals TINH and SG of A/C
                                                         cotrol assembly connector at each temperature.
                                                   OK:
                                                         Voltage :
       SG1
                       (-)   (+)          I20991         at 25

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