Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Echo 2000-2002 Approved techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 02echorm di theft theftdet
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DI-421
DIAGNOSTICS - THEFT DETERRENT SYSTEM
DI6WE-02
Theft Deterrent Horn Circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is activated, the relay in the ECU turns ON and OFF cycles of approximately
0.2 sec., causing the theft deterrent horn to blow (See the wiring diagram below).
In this condition, if any of the following operations is done, the relay in the ECU turns OFF, thus stopping
the theft deterrent horn from blowing:
(1) Unlock the front LH or RH door with a key.
(2) Turn the ignition switch to IG or ON position.
(3) Unlock the doors with the wireless door lock control system.
(4) Wait for approximately 60 seconds.
WIRING DIAGRAM
Theft Deterrent
ECU
Engine Room J/B
HORN 6 9
B-L G-W G-W
1 1 ID2 T6 SH
1 2
FL Block
5 2
2 B B
ID2 T6 SH-
MAIN
1
Battery T1
Theft Deterrent
Horn
I13713
INSPECTION PROCEDURE
1 Check voltage between terminal 1 of theft deterrent horn connector and body
ground.
PREPARATION:
1
LOCK Remove the theft deterrent horn and disconnect the connector.
Disconnect CHECK:
Measure voltage between terminal 1 of theft deterrent horn
connector and body ground.
OK:
(-) (+) Voltage: 10 - 14 V
I02919
2002 ECHO (RM884U)
Author : Date : 591
DI-422
DIAGNOSTICS - THEFT DETERRENT SYSTEM
NG Check and repair harness and connector be-
tween HORN fuse and theft deterrent horn.
OK
2 Check theft deterrent horn.
CHECK:
Connect positive (+) lead from the battery to terminal 1 and neg-
1 (+)
ative (-) lead to terminal 2 of theft deterrent horn connector.
OK:
Theft deterrent horn blows.
2 (-)
N14682
NG Replace theft deterrent horn.
OK
3 Check harness and connector between theft deterrent ECU and theft deterrent
horn (See page IN-29 ).
NG Check and repair harness or connector.
OK
Check and replace theft deterrent ECU.
2002 ECHO (RM884U)
Author : Date : 592
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