TOYOTA CAMRY 1999 Service Repair Manual

I00224
Wireless Door Lock ECU
Key Unlock
Warning
SwitchKSW L±B
W±B
1M1J7 5 5
1
2
3 7
IG10
1D
J/C L±B
W±B1M
Integration Relay
Instrument Panel J/BW6 J10 Instrument Panel J/B
L±B B
J9B
J11
A
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI±819
1054 Author: Date:
Key Unlock Warning Switch Circuit
CIRCUIT DESCRIPTION
When the key is inserted in the ignition key cylinder, the key unlock warning switch comes ON, and when
the key is not inserted the switch is OFF.
When the key unlock warning switch is ON, the ECU operates the key confinement prevention function.
WIRING DIAGRAM
DI05V±03

N14694
KSW
DI±820
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
1055 Author: Date:
INSPECTION PROCEDURE
1 Check voltage between terminal KSW of wireless door lock ECU connector and
body ground.
PREPARATION:
Remove the wireless door lock ECU from No.1 instrument pan-
el brace.
CHECK:
Measure voltage between terminal KSW of wireless door lock
ECU connector and body ground, when key plate is not inserted
in the key cylinder.
OK:
Voltage: 10 ± 14 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI±809).
NG
Check and repair harness and connector between wireless door lock ECU and key unlock warn-
ing switch.

I00223
Wireless Door
Lock ECU Theft Deterrent
ECU
Integration Relay
Door Cour-
tesy Switch R±W
R±G DSWD
CTY
DSWPR±WIN2 1G
1S J10 J9
J33 J34
ED A 4
4
6
Rear RH
Rear LHFront RH
Front LH8 1S1G R±G R±G
R±GR±W
R±G R±W R±W
4
CTY
5
6 1C
14
1
2 712
11 11 R±W J33J33
J34D
DE
R±G
J33
J33
J34 DE
ER±W
T4W6 T4
T4
IN2R±G Instrument Panel J/B
1
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI±821
1056 Author: Date:
Door Courtesy Switch Circuit
CIRCUIT DESCRIPTION
The door courtesy switch comes ON when the door is opened and goes OFF when door is closed. Further-
more. the door courtesy switch circuit has terminal +B connected inside the theft deterrent ECU . Battery
positive voltage is applied to terminal DSWD of the theft deterrent ECU when all doors are closed, i.e., when
the door courtesy switches of all doors are OFF.
WIRING DIAGRAM
DI05W±03

N14695
CTY(+)
DI±822
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
1057 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 open door warning light circuit
OK
2 Check voltage between terminal CTY of wireless door lock ECU connector and
body ground.
PREPARATION:
Remove the wireless door lock ECU from No.1 instrument pan-
el brace.
CHECK:
Measure voltage between terminal CTY of wireless door lock
ECU connector and body ground, when all doors are closed.
OK:
Voltage: 10 ± 14 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI±809).
NG
Check and repair harness and connector between wireless door lock ECU and door courtesy
switch.

I00301
Wireless Door Lock ECUTheft Deterrent ECU
518
LG
PANI
PANIW6T4
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI±823
1058 Author: Date:
Panic Circuit
CIRCUIT DESCRIPTION
This circuit will transmit a panic signal from a wireless door lock ECU to a theft deterrent ECU.
When the key is not inserted in the ignition key cylinder and the theft deterrent ECU receives the panic signal
from the wireless door lock ECU, warning operation will be performed.
WIRING DIAGRAM
DI05X±04

I00310
PANI
I00309
PANI
Push the panic switch
4 ± 6 V
Below 1 V
Output signal
300m sec
DI±824
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
1059 Author: Date:
INSPECTION PROCEDURE
1 Check voltage between terminal PANI of theft deterrent ECU connector and body
ground.
CHECK:
Measure voltage between terminal PANI of theft deterrent ECU
connector and body ground.
OK:
Voltage: 4 ± 6 V
OK Exchange theft deterrent ECU.
NG
2 Check the panic signal (Theft deterrent ECU side)
CHECK:
Check the signal of the terminal PANI when pushing the PANIC
switch of the transmitter.
HINT:
Check the signal using the oscilloscope or oscilloscope function
of TOYOTA hand±held tester.
OK:
Output the signal as shown in the illustration.
OK Exchange theft deterrent ECU.
NG

I00308
PANI
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
DI±825
1060 Author: Date:
3 Check the panic signal (Wireless door lock ECU side)
CHECK:
Check the signal of the terminal PANI when pressing the PANIC
switch of the transmitter.
OK:
Output the signal shown on the previous page.
NG Proceed to next circuit inspection shown on
problem symptoms table (See page DI±809).
OK
Check and repair harness and connector between wireless door lock ECU and theft deterrent
ECU.

DI06M±04
Customer Problem Analysis
Vehicle Brought to Workshop
Problem Symptom ConfirmationSymptom Simulation Symptom does not occur
Problem Symptoms Table
Circuit Inspection
Identification of Problem
Repair
Confirmation Test
EndTitles inside
are titles of pages in this
manual with the page number indicated in the
bottom portion. See the indicated pages
for detailed explanations. 1
23
4
5
7
Step 5, 7 : Diagnostic steps permitting the use
of the TOYOTA hand±held tester
and TOYOTA break±out±box. P. DI±827
P. DI±837
P. IN±21
P. DI±838 ~ DI±866
Symptom occur
6
DI±826
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
1061 Author: Date:
THEFT DETERRENT SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
Troubleshooting of the theft deterrent system is based on the premise that the door lock control system is
operating normally. Accordingly, before troubleshooting the theft deterrent system, first make certain that
the door lock control system is operating normally.
For troubleshooting use a volt/ohm meter.
Be sure to use troubleshooting procedure appropriate to the diagnostic tool being used.
Perform troubleshooting in accordance with the procedure on the following page.

DI06N±05
THEFT DETERRENT SYSTEM Check Sheet
Inspector 's name:
Customer 's Name
Date of VehicleRegistration No.
Registration Year
Frame No.
Odometer Reading / /km
Mile
Weather Conditions
When Problem
Occurred Frequency Problem OccursWeather
Outdoor temperature
/ /

Constant
Sometimes ( Times per day, month)

Once only Brought in

Theft deterrent system cannot be set.

Indicator light does not flash when the theft deterrent system is set.
(It stays on or does not light at all.)

Theft deterrent system
does not operate.
When unlocked using the
door lock knob.

When the engine hood is
opened.

System cannot be
canceled once set.
When door is unlocked using key or wireless door lock control system.

When the key is inserted in the ignition key cylinder and turned to ACC or ON
position.
(However, only when the system has never operated)

When the luggage compartment door is opened with the key.

System cannot be
canceled during warning
operation.
When door is unlocked using key or wireless door lock control system.

When the key is inserted in the ignition key cylinder and turned to ACC or ON
position.

Warning operation starts when the system is set and the door or luggage compartment door is opened with
the key.

Others.
Date Problem First Occurred

Fine
Cloudy
Rainy
Snowy

Various/Others

Hot
Warm
Cool

Cold (Approx. 5F ( 5C))
Problem Symptom
Malfunction

Horns only

Theft deterrent horn only

Headlights only

Taillights only

Starter cut only

Door lock operation only
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI±827
1062 Author: Date:
CUSTOMER PROBLEM ANALYSIS CHECK

DI1KU±02
DI±828
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
1063 Author: Date:
PRE±CHECK
1. Active arming mode:
SETTING THE THEFT DETERRENT MODE
The system will be automatically set to the theft deterrent mode
about 30 seconds after the setting processes listed below are
performed.
Setting Processes: (do processes (1)
(4) in the order)
(1) Remove the ignition key from the key cylinder.
(2) Close all entry points (door, hood and luggage
compartment door).
(3) Use any one of the following methods to lock all the
doors depending on a given condition.
Use the key to lock the driver or passenger
side door. (as a result, all the doors(including
the engine hood and luggage compartment
door) will be closed and locked), or
Use the remote control to lock any door (as a
result, all the doors(including the engine
hood and luggage compartment door) will be
closed and locked), or
If the front right or left door is unlocked when
both the rear doors are already locked, lock
and close the remaining unlocked door by
hand (as a result, all the doors(including the
engine hood and luggage compartment door)
will be closed and locked).
Close all doors and lock with the engine hood
or luggage compartment door opened, and
close the engine hood or all the doors(includ-
ing the engine hood and luggage compart-
ment door).
(4) About 30 seconds after the above process (3), the
theft deterrent mode will automatically start.
HINT:
The closing/locking of all the entry points (doors, hood and lug-
gage) must remain unchanged for about 30 seconds, the sys-
tem will start the theft deterrent mode.
2. Passive arming mode:
SETTING THE THEFT DETERRENT MODE
The system will be automatically set to the theft deterrent mode
about 30 seconds after the setting processes listed below are
performed.
Setting Processes:
(1) Remove the ignition key from the key cylinder.
(2) Open and close any entry points (door, hood and
luggage compartment door).
Now, all the entry points are closed.