Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 theft citheftd
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DI-538
DIAGNOSTICS - THEFT DETERRENT SYSTEM
DI06V-1 1
Theft Deterrent Horn Circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is activated, contact (a) and contact (b) in the ECU close alternately, causing
the theft deterrent horn to blow (See the wiring diagram below).
In this condition, if any of the following operations is done, the contact (a) in the ECU opens, thus stopping
the theft deterrent horn from blowing:
(1) Unlock the front LH or RH door with the key.
(2) Turn the ignition switch to ACC or ON position.
(3) Unlock the doors by the wireless door lock control system.
(4) Wait for approximately 60 seconds.
(5) Push the panic switch of the wireless door lock control system.
WIRING DIAGRAM
Theft Deterrent ECU
Engine Room J/B No.2
HORN
3 3 V-W 2 7 V-W 9
W V-W
2B 2F IK3 IG2 T4 SH
S
B-L
FL MAIN
Battery
I16263
2001 SIENNA (RM787U)
Author : Date : 692
DI-539
DIAGNOSTICS - THEFT DETERRENT SYSTEM
INSPECTION PROCEDURE
1 Check voltage between terminal 1 of theft deterrent horn connector and body
ground.
PREPARATION:
1 Remove the theft deterrent horn and disconnect the connector.
CHECK:
Measure voltage between terminal 1 of theft deterrent horn
connector and body ground.
OK:
Voltage: 10-14V
I06105 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 body ground of theft deterrent horn connector.
OK:
Theft deterrent horn blows.
2 (-)
I06106
NG Replace theft deterrent horn.
OK
2001 SIENNA (RM787U)
Author : Date : 693
DI-540
DIAGNOSTICS - THEFT DETERRENT SYSTEM
3 Check harness and connector between theft deterrent ECU and theft deterrent
horn (See page IN-31 ).
NG Check and repair harness or connector.
OK
Check and replace theft deterrent ECU.
2001 SIENNA (RM787U)
Author : Date : 694
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