Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 theft ciigsw
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DI-547
DIAGNOSTICS - THEFT DETERRENT SYSTEM
DI06Z-08
Ignition Switch Circuit
CIRCUIT DESCRIPTION
When the ignition switch is turned to the ACC position, battery positive voltage is applied to the terminal ACC
of the ECU. Also, if the ignition switch is turned to the ON position, battery positive voltage is applied to the
terminals ACC and IG of the ECU. When the battery positive voltage is applied to the terminal ACC of the
ECU while the theft deterrent system is activated, the warning stops. Furthermore, power supplied from the
terminals ACC and IG of the ECU is used as power for the door courtesy switch, and position switch, etc.
WIRING DIAGRAM
Theft Deterrent
ECU
I12
Ignition J9 Junction
Driver Side J/B No.1 Driver Side J/B No.1 Connector
Switch
1 ECU-IG 8 5 6 13
B-Y B-R B-R B-R
1K 1D 1W 1G T3 IG
2 AM1 IG1 4 A A
Driver Side J/B No.1 Engine Room J/B No.2
2 AM1 1 2 2
W-L W
1K 1B 2L 2D
2 1
W
FL BLOCK
FL MAIN B-L 1 ALT INP 4
F8 F8
Battery
I19490
2001 SIENNA (RM787U)
Author : Date : 701
DI-548
DIAGNOSTICS - THEFT DETERRENT SYSTEM
INSPECTION PROCEDURE
1 Check CIG and ECU-IG fuses.
PREPARATION:
Driver Side J/B No.1
(a) Remove the fuse box opening cover.
ECU-IG
(b) Remove ECU-IG fuses from driver side J/B No.1.
CHECK:
Check continuity of ECU-IG fuses.
OK:
Continuity
NG Check for short in all the harness and compo-
nents connected to the CIG and ECU-IG fuses
I03208 (See attached wiring diagram).
OK
2 Check voltage between terminal IG and ACC of theft deterrent ECU and body
ground.
PREPARATION:
(a) Disconnect the theft deterrent ECU connectors.
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminal IG and ACC of theft deter-
rent ECU connector and body ground.
OK:
(-) (+) IG Voltage: 10-14V
I01926
NG Check and repair harness and connector be-
tween theft deterrent ECU and battery (See page
IN-31 ).
OK
Check and replace theft deterrent ECU.
2001 SIENNA (RM787U)
Author : Date : 702
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