Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 206dv ciintrtr

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                                                                                                                                 05-1831
                                             DIAGNOSTICS        -    ENGINE IMMOBILIZER SYSTEM


ENGINE IMMOBILISER SYSTEM
                                                                                                                                     052IA-04


HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
Troubleshoot in accordance with the procedures on the following pages.
      1      VEHICLE BROUGHT TO WORKSHOP




      2      CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
             (See page 05-1833 )




      3      CRANK ENGINE FOR MORE THAN 10 SECONDS




      4      CHECK DTC

(a)       Check for DTCs and note any codes that are output.
(b)       Delete the DTC.
(c)       Recheck for DTCs. Try to prompt the DTC (SFI system and engine immobiliser system) by simulating
          the original activity that the DTC suggested.
          (1) If the DTC does not reoccur, proceed to A.
          (2) If the DTC (SFI system) reoccurs, proceed to B.
          (3) If the DTC (engine immobiliser system) reoccur, proceed to C.
                                                         B          Go to SFI SYSTEM
                                                                    (See page 05-5 )

                                                         C          Go to step 8

      A

      5      READ VALUE OF HAND-HELD TESTER
             (IMMOBILISER ECU (TRANSPONDER KEY ECU ASSY) (SWITCH CONDITION))

(a)       Connect the hand-held tester to the DLC3.
(b)       Turn the ignition switch ON and push the hand-held tester main switch ON.
(c)       Select the item KEY SW in the DATA LIST and read its value displayed on the hand-held tester.
          Transponder key ECU assy:
                                     Measurement Item/
               Item                                                         Normal Condition                       Diagnostic Note
                                      Display (Range)
                                                                    ON: Key is in ignition key cylinder
                                Un-lock warning switch signal
              KEY SW                                                OFF: No key is in ignition key cyl-                  -
                                        /ON or OFF
                                                                                   inder

                                                       NG           Go to DTC B2780 (See page 05-1844 )

      OK
 2005 SIENNA REPAIR MANUAL (RM1163U)

                                                                              Author :                    Date :                     2014
05-1832
                                         DIAGNOSTICS   -   ENGINE IMMOBILIZER SYSTEM

      6      PROBLEM SYMPTOMS TABLE (See page 05-1843 )

(a)       When problem is not listed on problem symptoms table, proceed to A.
(b)       When problem is listed on problem symptoms table, proceed to B.
                                                 B         Go to step 8

      A

      7      PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM

(a)       Pre-check (See page 05-1834 )
          (1) Inspect with the hand-held tester (ECU data monitor).
          (2) Inspect with the hand-held tester (ACTIVE TEST).
(b)       Terminals of ECU (See page 05-1839 )



      8      ADJUST, REPAIR OR REPLACE




  END




 2005 SIENNA REPAIR MANUAL (RM1163U)

                                                                  Author :             Date :   2015

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