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DI-555
DIAGNOSTICS - THEFT DETERRENT SYSTEM
DI074-10
Door Unlock Detection Switch Circuit
CIRCUIT DESCRIPTION
The door unlock detection switch is built in the door lock motor assembly. This switch is ON when the door
lock knob is in the unlock position and OFF when the lock knob is in the lock position. The ECU detects the
door lock knob conditions in this circuit. It is used as one of the operating conditions for the key confinement
prevention function.
WIRING DIAGRAM
Theft Deterrent ECU
Door Unlock Detection
Switch Front LH J4
W-B 6 4 BR-R 14
W-B BR-R BR-R
IA3 IA1 T3 LSWD
4 1 D D
Junction
IF Door Unlock Detection Connector
Switch Front RH
4 4 15
W-B W-B Y Y Y T3 LSWP
IJ1 1 IJ2
4 C C
II
Junction Slide Door Unlock
Connector Detection Switch RH J4
A A 10 5 L-B 16
J2 J3
W-B
II2
W-B Y Y L L L-Y 2 L-B IG2
L-B
T3 LSWR
II2 B
3 B
W-B 3 4 4
4 5
IJ
Back Door Unlock
J22 Dtection Switch
1 7 1
W-B L-B L-B L-B L-B
A 3
BD2 BB2 IB1
4 B
Junction Junction
BN Connector Slide Door Unlock Connector
(5 Doors)
Detection Switch LH
W-B L L Y Y L-B
3 (*1) 4 (*1) *1: w/o Power slide door
2 1
4 (*2) 5 (*2) *2: w/ Power slide door
BK
I19491
2001 SIENNA (RM787U)
Author : Date : 709
DI-556
DIAGNOSTICS - THEFT DETERRENT SYSTEM
INSPECTION PROCEDURE
1 Check Door Unlock Detection Switch.
PREPARATION:
(a) Remove the door trim and service hole cover.
(b) Disconnect door unlock detection switch connector.
CHECK:
Check continuity between terminals 1 and 4 of door unlock
LOCK detection switch connector, when the door lock knob is oper-
UNLOCK ated to the lock side and unlock side.
OK:
Switch Condition Tester connection Specified condition
4 1 Door unlock 1-4 Continuity
Door lock - No continuity
(-) (+)
I00273
I00274 I00278
NG Replace door unlock detection switch.
OK
2 Check harness and connectors between ECU and door unlock detection switch,
door unlock detection switch and body ground (See page IN-31 ).
NG Repair or replace harness or connector.
OK
Check and replace theft deterrent ECU.*1
*1: When there is a malfunction that prevents the theft deterrent
system from being set, proceed to the next numbered circuit in-
spection shown in matrix chart (See page DI-532 ).
2001 SIENNA (RM787U)
Author : Date : 710
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