TOYOTA CAMRY 2000 Service Repair Manual

I01927
Theft Deterrent ECU
T4
13
IG B±R B
J17
C
J16B±R Instrument Panel J/B
8
1
ECU±IG
1
1B AM1
2
1K
4 B±Y AM1
2Ignition Switch
W
B±R
B±R 1
F9 ALT
FL BLOCK
F4
1
B±G
FL MAIN
Battery
1D
1K
IG1
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI±851
1086 Author: Date:
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
DI06Z±06

I00269
Instrument panel J/B:
ECU±IG Fuse
I01926
IG (+) (±)
DI±852
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
1087 Author: Date:
INSPECTION PROCEDURE
1 Check CIG and ECU±IG fuses.
PREPARATION:
(a) Remove the fuse box opening cover.
(b) Remove ECU±IG fuses from instrument panel junction
block 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 ECU±IG fuses (See at-
tached wiring diagram).
OK
2 Check voltage between terminal IG 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 of theft deterrent ECU
connector and body ground.
OK:
Voltage: 10 ± 14 V
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.

I08429
Instrument Panel J/B Key Unlock
Warning SwitchTheft Deterrent ECU
W±B6
KSW
L±BT4 B
J9 B
J9J/C
L±B
L±B
A
J11
J/C
IG W±B 7
1J 3
1M 215
1M7
1D
Instrument Panel J/B
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI±853
1088 Author: Date:
Key Unlock Warning Switch Circuit
CIRCUIT DESCRIPTION
The key unlock warning switch goes ON when the ignition key is inserted in the key cylinder and goes OFF
when the ignition key is removed.
The ECU operates the key confinement prevention function while the key unlock warning switch is ON.
WIRING DIAGRAM
DI070±06

I00297
I00296I00305
2 (±)
1 (+)
DI±854
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
1089 Author: Date:
INSPECTION PROCEDURE
1 Check key unlock warning switch.
PREPARATION:
Disconnect key unlock warning switch connector.
CHECK:
Check continuity between terminal 1 and 2 of key unlock warn-
ing switch connector, when the key is inserted to the key cylin-
der or removed.
OK:
Switch positionTester connectionSpecified condition
ON (Key inserted)1 ± 2Continuity
OFF (Key removed)±No continuity
NG Replace key unlock warning switch.
OK
2 Check harness and connectors between ECU and key unlock warning switch,
key unlock warning 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).

I00252
Theft Deterrent ECU
LUG 7
T4G±W C CJ33
J/C
G±W 2IF1G±W 2 1 Luggage Compartment
Door Key Lock and
Unlock Switch
BP
W±B
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI±855
1090 Author: Date:
Luggage Compartment Door Key Lock and Unlock Switch Circuit
CIRCUIT DESCRIPTION
The luggage compartment door key lock and unlock switch goes ON when the luggage compartment door
key cylinder is turned to the unlock side with the key.
WIRING DIAGRAM
DI071±04

AB0119
I00271I00277
ON
1
(+) (±)
I00270
21
DI±856
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
1091 Author: Date:
INSPECTION PROCEDURE
1 Check voltage between terminal 1 of luggage compartment door key lock and
unlock switch connector and body ground.
PREPARATION:
(a) Remove luggage compartment door trim.
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminal 1 of luggage compartment
door key lock and unlock switch connector and body ground,
when the key is turned to the unlock side and not turned respec-
tively.
OK:
Key operationVoltage
Turned to the unlock side0 V
Not turnedBattery positive voltage
OK Check and replace theft deterrent ECU.*1
NG
2 Check luggage compartment door key lock and unlock switch.
PREPARATION:
Disconnect luggage compartment door key lock and unlock
switch connector.
CHECK:
Check continuity between terminals 1 and 2, when the key is
turned to the unlock side and not turned respectively.
OK:
Key operationTester connectionSpecified condition
Turned to unlock1 ± 2Continuity
Not turned±No continuity
NG Repair or replace luggage compartment door
key lock and unlock switch.
OK

± DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI±857
1092 Author: Date:
3 Check harness and connector between theft deterrent ECU and key lock and un-
lock switch, key lock and unlock switch and body ground (See page IN±31).
NG Repair or replace harness or connector.
OK
Check and replace theft deterrent ECU.
*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).

I00253
Theft Deterrent ECU
DSWL
T42
R±Y 6
IF1
R±Y
1
Luggage Compartment
Door Courtesy Switch DI±858
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
1093 Author: Date:
Luggage compartment Door Courtesy Switch Circuit
CIRCUIT DESCRIPTION
The luggage compartment door courtesy switch goes ON when luggage compartment door is opened and
goes off when the luggage compartment door is closed.
WIRING DIAGRAM
DI072±06

± 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