2000 TOYOTA CAMRY ECU

± DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI±859
1094 Author: Date:
INSPECTION PROCEDURE
1 Check operation of luggage compartment door courtesy light.
CHECK:
Check that luggage compartment door courtesy light goes OFF when luggage compartment door courtesy
switch is pushed, and comes ON when switch is not pushed.
NG Check and repair luggage compartment door
courtesy light circuit (See page BE±32).
OK
2 Check for open in harness and connector between theft deterrent ECU and lug-
gage compartment door courtesy switch (See page IN±31).
NG Repair or replace harness or connectors.
OK
Check and replace theft deterrent ECU.*1
*1: When there is a malfunction that the theft deterrent system
cannot be set, proceed to the next numbered circuit inspection
shown on problem symptoms table (See page DI±837).

I08430
Door Key Lock and
Unlock Switch RH Instrument Panel J/BTheft Deterrent ECU
B9
UL3 J6
J/C Door Key Lock and
Unlock Switch LH
L2 T4
8
T4
UL2 10
T4 B 3
IE1
L±W UNLOCK
R±G R±G R±G
4
IE1
L±WL±W BB 3
2
LOCK J38
J/C
AA1
W±B
*1
IE W±BW±B
*1
20
IE1
7
1G3
1V
W±B
J37
J/C
L±W L±W4
IM1
3
IM1B 2
3AA
L L
L LOCK
UNLOCK
IJ20
IM1J39
J/C
AA1
W±B
*1W±B*1
W±B*2
W±B*2*1: TMC Made
*2: TMMK Made W±B DI±860
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
1095 Author: Date:
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
DI073±06

I00272
1
2
3
(±) (+)
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI±861
1096 Author: Date:
INSPECTION PROCEDURE
1 Check door key lock and unlock switch.
PREPARATION:
(a) Remove the door trim and service hole cover.
(b) Disconnect the door key lock and unlock switch connec-
tor.
CHECK:
Check continuity between terminals 1, 2 and 3 of door key lock
and unlock switch connector, when each of door key lock and
unlock switch is turned to the lock side, unlock side and not
turned.
OK:
Switch positionTester connectionSpecified condition
Lock side2 ± 3Continuity
Unlock side1 ± 3Continuity
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 the theft deterrent system
cannot be set, proceed to the next numbered circuit inspection
shown on problem symptoms table (See page DI±837).

I08431
Theft Deterrent ECU
14
T4 Instrument Panel J/B
Door Unlock Detection
Switch Front LHJ6
J/C
L±RLSWD
LSWP
LSWR 15
T4
16
T4 L±R L±R11
IE1F F
W±B*1
IE
4
*1
1*21*1
4*2
J10E 4 1
W±B*1
J38
J/C
A A 20
IE1
W 7
1G 3
1V
W±B
W±B
*2
J37
J/C
C C
Y Y Y11
IM1 Door Unlock Detection
Switch Front RH
W±B
*1W±B*1
J39
J/C
A A
W±B
*2
20
IM1
W±B
IJ
L±Y J10EJ/C
L±Y
L±Y
L±Y
2
IF2 4
BO1 41 Door Unlock Detection
Switch Rear LH
Door Unlock Detection
Switch Rear RH W±B W±B6
BO1 A J40
J/C
BL
BN
IK
J9DL±Y L±Y
L±YW±B W±B
W±B W±B3
IN2 4
BP1 41 6
BP1
*1: TMC Made
*2: TMMK Made DI±862
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
1097 Author: Date:
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
DI074±06

I00273
I00274I00278
LOCK
UNLOCK
41
(+)
(±)
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI±863
1098 Author: Date:
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
detection switch connector, when the door lock knob is oper-
ated to the lock side and unlock side.
OK:
Switch ConditionTester connectionSpecified condition
Door unlock1 ± 4Continuity
Door lock±No continuity
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 the theft deterrent system
cannot be set, proceed to the next numbered circuit inspection
shown on problem symptoms table (See page DI±837).

I04444
Theft Deterrent ECU
DSWD
CTY
DSWP
4
T4
T4
T41
5 R±G A
J10 C
R±G 1
1G 7
1S
Integration
Relay
4
1G R±G
Door Courtesy
Switch Front LH
1
R±W J/C
E
J34 D
J33
D
J33
D J33 6
4
12
1S R±B
1 Door Courtesy
Switch Rear LH
J9
R±W
R±W 8
IN2 R±W
1 Door Courtesy
Switch Rear RH
R±W
1
Diode
2
R±G J/C
E
J33
J34D
E
J33R±G R±G
IN26
R±G
1 Door Courtesy
Switch Front RH
J/C
Instrument panel J/B DI±864
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
1099 Author: Date:
Door Courtesy Switch Circuit
CIRCUIT DESCRIPTION
The door courtesy switch goes ON when the door is opened and goes OFF when the door is closed.
WIRING DIAGRAM
DI075±06

± DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI±865
1100 Author: Date:
INSPECTION PROCEDURE
1 Check operation of open door warning light.
CHECK:
Check that open door warning light comes ON when each door is opened, and goes OFF when all doors
are closed.
NG Check and repair open door warning light cir-
cuit.
OK
2 Check for open in harness and connector between theft deterrent ECU and door
courtesy switch (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 the theft deterrent system
cannot be set, proceed to the next numbered circuit inspection
shown on problem symptoms table (See page DI±837).

I00257
Theft Deterrent ECU
DSWH
T33
B IG31
B 3
B 1 Engine Hood Courtesy
Switch
2
W±B
EBIK1 DI±866
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
1101 Author: Date:
Engine Hood Courtesy Switch Circuit
CIRCUIT DESCRIPTION
The engine hood courtesy switch is built into the engine hood lock assembly and goes ON when the engine
hood is opened and goes OFF when the engine hood is closed.
WIRING DIAGRAM
DI076±06