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ecupower


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DI-418
                                               DIAGNOSTICS    -    THEFT DETERRENT SYSTEM
                                                                                                                         DI01W-20




 ECU Power Source Circuit

CIRCUIT DESCRIPTION
This circuit provides power to operate the theft deterrent ECU.

WIRING DIAGRAM

                                                                                                       Theft Deterrent
                                                                                                       ECU
                                    Instrument Panel J/B

                                    4                  7                                          11
                                    1A                 1L                                         T5 +B1
             1          L-Y                                                  L-Y

                       Engine
                 2                                                          J/C
                       Room          1                10           B                    B         1
  DOME                 J/B          1C                1L                               J6
                                                                   J7                             T6 +B2
                                                            W-L                             W-L
                                            D/L
                 1
                                B
                                                                                                  7
             1                                               J5         A
         2       B-L            4                                                                 T6    E
                                                             J/C                   W-B
                 MAIN           ALT FL Block



                                                  Battery
                                                                   ID




                                                                                                                           I13711




2002 ECHO (RM884U)

                                                                            Author :              Date :                   588
                                                                                                      DI-419
                                          DIAGNOSTICS   -   THEFT DETERRENT SYSTEM

INSPECTION PROCEDURE

   1      Check DOME and D/L fuse.

Engine room junction block:                     PREPARATION:
                                                (a) Remove the DOME fuse from the engine room junction
                                                    block.
                                                (b) Remove the D/L fuse from the instrument panel junction
                                                    block.
                                                CHECK:
                                                Check continuity of the DOME and D/L fuse.
DOME Fuse                                       OK:
                                                    Continuity
Instrument panel junction block:




                                   D/L
                                   Fuse



                                                  NG        Check for short in all the harness and compo-
                                                            nents connected to the DOME and DOOR fuse
                                                            (See attached wiring diagram).
I12041
I12040                                I15056



   OK



   2      Check voltage between terminals +B1, +B2 and E of theft deterrent ECU connec-
          tor.

                                                PREPARATION:
         LOCK                                   (a) Remove the glove compartment door.
                                                (b) Disconnect the theft deterrent ECU connector.
         Disconnect                             CHECK:
                                    +B1   (+)
                                                Measure voltage between terminals +B1, +B2 and E of theft de-
         (+)                                    terrent ECU connector.
                                                OK:
         (-)
               +B2   (+)                              Voltage: 10 - 14 V
                           E (-)      I02918

                                                  OK        Proceed to next circuit inspection shown in
                                                            problem symptoms table (See page DI-412 ).


   NG




2002 ECHO (RM884U)

                                                                 Author :            Date :            589
DI-420
                                  DIAGNOSTICS   -   THEFT DETERRENT SYSTEM



   3     Check for open in harness and connector between ECU and body ground (See
         page IN-29 ).


                                         NG         Repair or replace harness or connector.


  OK



  Check and repair harness and connector be-
  tween ECU and battery.




2002 ECHO (RM884U)

                                                          Author :           Date :           590



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