ignition TOYOTA TERCEL 1996 Service Repair Manual

DI-194
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
1996 TERCEL (RM440U)Terminals
SymbolsConditionSTD Value
B14A4DSWH EEngine hood courtesy switch ºONº.Below 1 WB14 e A4DSWH - EEngine hood courtesy switch ºOFFº.1 MW or higher
B15A4LSWD EDoor unlock detection switch ºONº . (Driver's)Below 1 WB15 e A4LSWD - EDoor unlock detection switch ºOFFº. (Driver's)1 MW or higher
B16A4UL2 E
Door key lock and unlock switch ºUNLOCKº.
(Passenger's)Below 1 W
B16 e A4UL2 - EDoor key lock and unlock switch ºOFFº or ºLOCKº.
(Passenger's)1 MW or higher
B19A4DSWP EDoor courtesy switch ºONº. (Passenger's)Below 1 WB19 e A4DSWP - EDoor courtesy switch ºOFFº. (Passenger's)1 MW or higher
B20 e A4KSW - E
Key unlock warning switch ºONº.
(Key is inserted into key cylinder)Below 1 WB20 e A4KSW E
Key unlock warning switch ºOFFº.1 MW or higher
B21A4LSWP EDoor unlock detection switch ºONº . (Passenger's)Below 1 WB21 e A4LSWP - EDoor unlock detection switch ºOFFº. (Passenger's)1 MW or higher
B22A4L2 E
Door key lock and unlock switch ºLOCKº.
(Driver's)Below 1 W
B22 e A4L2 - EDoor key lock and unlock switch ºOFFº or ºUNLOCKº.
(Driver's)1 MW or higher
B23 e A4TAIL - ELight control switch ºOFFº.10 - 14 V
B24 e A4HORN - EHorn switch ºOFFº.10 - 14 V
B25 e A4SRLY - EIgnition switch is turned to ºSTº.
(when park / neutral position switch ºPº position)10 - 14 V

I05883Door Lock Control Relay
T6
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
DI-195
1996 TERCEL (RM440U)
w/o Theft Deterrent System
TerminalsSymbolsConditionSTD Value
3 e 4ACT(-) - ACT(+)Ignition switch ºOFFº.Below 50 W
8 e GroundB - GroundAlways.10 - 14 V
916UL3 E
Door key lock and unlock switch ºUNLOCKº.
(Driver's)Below 1 W
9 e 16UL3 - EDoor key lock and unlock switch ºOFFº or ºLOCKº.
(Driver's)1 MW or higher
1016L1 E
Door lock control switch ºLOCKº and
door key lock and unlock switch ºLOCKº .Below 1 W
10 e 16L1 - EDoor lock control switch ºOFFº or ºUNLOCKº and door key
lock and unlock switch ºOFFº or ºUNLOCKº.1 MW or higher
1116UL1 EDoor lock control switch ºUNLOCKº .Below 1 W11 e 16UL1 - EDoor lock control switch ºOFFº or ºLOCKº.1 MW or higher
16 e GroundE - GroundAlways.Below 1 W

I05887
(-) (+)ON
3
2
RH LH
43
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
DI-207
1996 TERCEL (RM440U)
INSPECTION PROCEDURE
1 Check voltage between terminals 2(3), 1(1) of door lock control switch connector
and body ground.
PREPARATION:
Remove the door trim and service hold cover.
CHECK:
(a) Turn ignition switch ON.
(b) Measure voltage between terminals 3(2), 4(3) of door lock
control switch connector and body ground, when door
lock control switch is pressed to the lock side, unlock side
and not pressed.
OK:
S it h itiTerminalSwitch position3(2)4(3)
Lock sideBelow 1 V8 - 10 V
Unlock side8 - 10 VBelow 1 V
OFF8 - 10 V8 - 10 V
HINT:
The terminal number without brackets is for the LH, the number
with brackets is for the RH.
OK Proceed to next circuit inspection shown on
matrix chart (See page DI-196).
NG

I10187
IEW-B
1 Key Unlock Warning Switch
2
LGT420
KSW Theft Deterrent ECU
N14675SR4824
I09773
2
1
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
DI-21 1
1996 TERCEL (RM440U)
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
INSPECTION PROCEDURE
1 Check key unlock warning switch.
PREPARATION:
Disconnect key unlock warning switch connector.
CHECK:
Check continuity between terminals 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
DI4MW-02

DI4MZ-01
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
DI-216
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1996 TERCEL (RM440U)
CUSTOMER PROBLEM ANALYSIS CHECK

DI4N0-02
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-217
1996 TERCEL (RM440U)
PRE-CHECK
1. SETTING OF THE THEFT DETERRENT SYSTEM
Setting Conditions
(a) Close all the doors.
(b) Close the engine hood and luggage compartment door.
(c) Remove the ignition key from the ignition key cylinder.
Setting Operation
When any of the following operations (a), (b) or (c) is performed, the theft deterrent indicator light will light
up as described.
(1) Lock the left or right front door using the key
(All doors are locked by key-interlinked lock operation).
(2) Lock all the doors using the wireless door lock control system.
(3) With the rear doors locked and with one of the front doors locked, lock the other front door without
using the key (keyless door lock).
Elapsed time after operationIndicator light
Within about 30 secondsLight up
After about 30 secondsBlinks *1
*1: 1 sec. or, 1 sec. off
HINT:
When the theft deterrent system is set, doors cannot be locked or unlocked with the door lock control switch
and the luggage compartment door cannot be unlocked with the luggage compartment door opener switch.
2. CANCELING OF THE THEFT DETERRENT SYSTEM IN THE SET CONDITION
Check if the theft deterrent indicator light is blinking.
Canceling Operation
When any of the following operations (a), (b), (c) or (d) is performed, the theft deterrent system is canceled
and indicator light will go off.
Condition
(1) Unlock the left or right front door using the key.
(2) Unlock all the doors using the wireless door lock control system.
(3) Insert the ignition key in the ignition key cylinder and turn it to the ACC or ON position
(This is operative only when the theft deterrent system has never operated).
(4) Unlock the luggage compartment door with the key. *1
*1: The theft deterrent system is temporarily canceled only while the luggage compartment door is open.
Approximately 2 seconds after the luggage compartment door is closed, the theft deterrent system is reset.
3. CHECK OF THE THEFT DETERRENT SYSTEM OPERATION
Check if the theft deterrent indicator light is blinking.
When any of the following operations (a) or (b) is performed, the system sounds the horns and theft deterrent
horn and flashes the headlights and taillights for about one minute to alert. At the same time, the system
disconnects the starter motor circuit and locks all doors (if all doors are not locked, the system repeats door
locking operation every 2 seconds during the one minute alert time).
(1) Open the engine hood using the engine hood opener lever.
(2) Unlock any of the front or rear doors without key operation.

N09348
ECUTOYOTA hand-held tester
TOYOTA Break-out-box
Interfece
Box DI-218
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1996 TERCEL (RM440U)
4. CANCELLING OF THE THEFT DETERRENT SYSTEM IN OPERATING CONDITION
The theft deterrent operation can be canceled when any of the following conditions is met:
No.ConditionCanceling Operation
1Unlock left or right door with the key.

2Unlock doors with wireless door lock control system.

3Insert key into ignition key cylinder and turn it to ACC or ON
position.

4About 1 minute passes after theft deterrent operation be-
gins.Automatic stop *1
*1: In this case the theft deterrent system resets after about 2 seconds if all doors are closed.
5. ECU TERMINAL VOLTAGE MEASUREMENT BY US-
ING TOYOTA BREAK- OUT- BOX AND TOYOTA
HAND-HELD TESTER
(a) Hook up the TOYOTA break- out- box and TOYOTA
hand-held tester to the vehicle.
(b) Read the ECU input/output values by following the
prompts on the tester screen. Please refer to the TOYO-
TA break-out-box operator's manual.
HINT:
TOYOTA hand-held tester has a ºSnapshotº function. This re-
cords the measured data and is effective in the diagnosis of in-
termittent problems.

DI4N1-01
N12446N12538I10188
Engine Hood Courtesy Switch
Engine Room R/B
Starter Relay
Horn Relay
Headlight Control Relay
HAZ-HORN Fuse
HEAD LH Fuse
HEAD RH Fuse
Theft Deterrent Horn HORN
Door Lock Control Relay or
Theft Deterrent ECU
Combination Meter
Theft Deterrent Indicator
Ignition Switch
Light Control Switch Clutch Start Switch
I/P J/B
Taillight COntrol Relay
TAIL Fuse
CIG & RAD Fuse
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-219
1996 TERCEL (RM440U)
PARTS LOCATION

DI4N2-02
I00302 I00303I00304
T4 T3
Theft Deterrent and Dor Lock Control ECU A
B
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-221
1996 TERCEL (RM440U)
TERMINALS OF ECM
TerminalsSymbolsConditionSTD Value
A2 - A3ACT- eACT+Ignition switch ºOFFº.Below 50 W
A4 - GroundE e GroundAlways.Below 1 W
A4 - A8E e ACCIgnition switch ºACCº.10 - 14 V
A9 - Ground+B2 e GroundAlways.10 - 14 V
B1 - Ground+B1 e GroundAlways.10 - 14 V
B2A4LSWRE
Door unlock detection switch ºONº.
(Rear door)Below 1 W
B2 e A4LSWR e EDoor unlock detection switch ºOFFº.
(Rear door)1 MW or higher
B3A4CTYE
Door courtesy switch ºONº.
(Except driver's door opened)Below 1 W
B3 eA4CTY e EDoor courtesy switch ºOFFº.
(Except driver's door closed)1 MW or higher
B4A4DSWLELuggage compartment door courtesy switch ºONº.Below 1 WB4 e A4DSWL e ELuggage compartment door courtesy switch ºOFFº.1 MW or higher
B5A4L1EDoor lock control switch ºLOCKº.Below 1 WB5 e A4L1 e EDoor lock control switch ºOFFº or ºUNLOCKº.1 MW or higher
B6A4UL3E
Door key lock and unlock switch
driver's door ºUNLOCKº.Below 1 W
B6 e A4UL3 e EDoor key lock and unlock switch
driver's door ºOFFº or ºLOCKº.1 MW or higher
B7A4DSWDE
Door courtesy switch ºONº.
(Driver's door opened)Below 1 W
B7 eA4DSWD e EDoor courtesy switch ºOFFº.
(Driver's door closed)1 MW or higher
B8A4UL1EDoor lock control switch ºUNLOCKº.Below 1 WB8 e A4UL1 e EDoor lock control switch ºOFFº or ºLOCKº.1 MW or higher
B9A4LUGELuggage compartment door key lock and unlock switch ºONº.Below 1 WB9 e A4LUG eELuggage compartment door key lock and unlock switch ºOFFº.1 MW or higher
B10 - A4HEAD e ELight control switch other than ºHEADº.10 - 14 V
B11 - A4SH e EAlways.10 - 14 V
B12 - A4IND e EIndicator light circuit.Below 1 W
B14A4DSWHEEngine hood courtesy switch ºONº.Below 1 WB14 e A4DSWH e EEngine hood courtesy switch ºOFFº.1 MW or higher

DI-222
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
1996 TERCEL (RM440U)
B15A4LSWDE
Door unlock detection switch ºONº.
(Driver's)Below 1 W
B15 e A4LSWD e EDoor unlock detection switch ºOFFº.
(Driver's)1 MW or higher
B16A4UL2E
Door key lock and unlock switch ºUNLOCKº.
(Passenger's)Below 1 W
B16 e A4UL2 e EDoor key lock and unlock switch ºOFFº or ºLOCKº.
(Passenger's)1 MW or higher
B19A4DSWPEDoor courtesy switch ºONº. (Passenger's)Below 1 WB19 eA4DSWP e EDoor courtesy switch ºOFFº. (Passenger's)1 MW or higher
B20 eA4KSW e E
Key unlock warning switch ºONº.
(Key is inserted into key cylinder)Below 1 WB20 eA4KSW e E
Key unlock warning switch ºOFFº.1 MW or higher
B21A4LSWPEDoor unlock detection switch ºOFFº. (Passenger's)Below 1 WB21 e A4LSWP e EDoor unlock detection switch ºONº. (Passenger's)1 MW or higher
B22A4L2E
Door key lock and unlock switch ºLOCKº.
(Driver's)Below 1 W
B22 e A4L2 e EDoor key lock and unlock switch ºOFFº or ºUNLOCKº.
(Driver's)1 MW or higher
B23 - A4TALL e ELight control switch ºOFFº.10 - 14 V
B24 - A48HORN e EHorn switch ºOFFº.10 - 14 V
B25 - A4SRLY e EIgnition switch is turned to ºSTº.
(When park / neutral position switch ºPº position)10 - 14 V