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05-1986
                                       DIAGNOSTICS   -   DYNAMIC LASER CRUISE CONTROL SYSTEM
                                                                                                     05BDZ-01


HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
Step 3, 4, 9:
Diagnostic steps permitting the use of the hand-held tester.
   1      VEHICLE BROUGHT TO WORK SHOP




   2      CUSTOMER PROBLEM ANALYSIS (See page 05-1988 )




   3      CHECK BODY MULTIPLEX COMMUNICATION SYSTEM (See page 05-1876 )

(a) Check that the DTCs output.
HINT:
The ECM of this system is connected to the multiplex communication system. Therefore, before starting trou-
bleshooting, make sure to check that there is no trouble in the multiplex communication system.
                                                         DTC OUTPUTS (PROCEED TO "BODY MULTI-
                                                         PLEX COMMUNICATION SYSTEM")

                                                         DTC DOES NOT OUTPUT (GO TO STEP 4)

   4      THE DTCs CHECK (See page 05-1989 )

                                                         MALFUNCTION CODE (GO TO STEP 5)

                                                         NORMAL CODE (GO TO STEP 6)

   5      DTC CHART (See page 05-2000 )




  GO TO STEP 9

   6      PROBLEM SYMPTOM CONFIRMATION

                                                         SYMPTOM DOES NOT OCCUR (GO TO STEP 7)

                                                         SYMPTOM OCCURS (GO TO STEP 8)

   7      SYMPTOM SIMULATION (See page 01-27 )




  GO TO STEP 9


2005 SIENNA REPAIR MANUAL (RM1163U)

                                                               Author :            Date :              2169
                                                                                              05-1987
                                      DIAGNOSTICS   -   DYNAMIC LASER CRUISE CONTROL SYSTEM

  8     PROBLEM SYMPTOMS TABLE (See page 05-2008 )




  9     CIRCUIT INSPECTION (See page 05-2010 - 05-2047 )




 10     TERMINAL OF ECU (See page 05-2003 )




 11     IDENTIFYING PROBLEM




 12     REPAIR OR REPLACE




 13     CONFIRMATION TEST




 END




2005 SIENNA REPAIR MANUAL (RM1163U)

                                                              Author :           Date :         2170



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