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DI-553
DIAGNOSTICS - THEFT DETERRENT SYSTEM
DI073-09
Door Key Lock and Unlock Switch Circuit
CIRCUIT DESCRIPTION
The door key lock and unlock switch is built in the door key cylinder. When the key is turned to the lock side,
terminal 1 of the switch is grounded and when the key is turned to the unlock side, terminal 2 of the switch
is grounded.
WIRING DIAGRAM
Door Key Lock and Theft Deterrent ECU
Unlock Switch LH
J11
UNLOCK 1 9
L L L
IA1 T3 UL3
6 3 F F
W-B W-B Junction
IA3 Connector
1 8 8
L-W IA3 L-W L-W T3 L2
IF 2
LOCK F F
Door Key Lock and J4
Junction
Unlock Switch RH
Connector
LOCK 6
L-W IJ1 L-W
2 F
W-B 4 W-B
IJ1
1 J11 10
L-Y 1 L-Y L-Y
IJ2 T3 UL2
UNLOCK
3 E E
II Junction
Connector
I04437
2001 SIENNA (RM787U)
Author : Date : 707
DI-554
DIAGNOSTICS - THEFT DETERRENT SYSTEM
INSPECTION PROCEDURE
1 Check door key lock and unlock switch.
PREPARATION:
(a) Remove the door trim and service hole cover.
3 (b) Disconnect the door key lock and unlock switch connec-
tor.
CHECK:
2 Check continuity between terminals 1, 2 and 3 of door key lock
1 and unlock switch connector, when each of door key lock and
unlock switch is turned to the lock side, unlock side and not
I19508 turned.
OK:
Switch position Tester connection Specified condition
Lock side 2-1 Continuity
Unlock side 3-1 Continuity
OFF - No continuity
NG Replace door key lock and unlock switch.
OK
2 Check harness and connectors between ECU and switch, 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 pjrevents the theft deter-
rent system from being set, proceed to the next numbered cir-
cuit inspection shown in matrix chart (See page DI-532 ).
2001 SIENNA (RM787U)
Author : Date : 708
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