warning TOYOTA TERCEL 1996 Service Service Manual

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

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

DI4N3-01
Details of Problem
The theft deterrent system cannot be set
Inspecting Circuit*1See page
DI-224 1. Indicator light circuit
4. Door courtesy switch circuit
5. Door unlock detection switch circuit
6. Engine hood courtesy switch circuit
The indicator light does not blink when system is setIndicator light circuit
When the
system is
set
When the rear door is unlocked
When the luggage compartment door is opened
by a method other than the key2. Luggage compartment door key
lock and unlock switch circuit
3. Luggage compartment door
courtesy switch circuit
When the engine hood is opened
The system
does not
operateDoor unlock detection switch circuit
Luggage compartment door
courtesy switch circuit
Engine hood courtesy switch circuit
While the system is
in warning operation
Horns do not sound
Theft deterrent horn does not sound
Headlights do not flash
Taillights do not flash
The starter cut is not cut off
The rear door lock is not locked in unlock conditionHorn relay circuit
Theft deterrent horn circuit
Headlight control relay circuit
Taillight control relay circuit
Starter relay circuit
Door unlock detection switch circuit
It is not canceled when the ignition key is turned to
ACC or ON position
It still operates when the luggage compartment door is
opened with the key When the
system is
setIgnition switch circuit
Luggage compartment door key
lock and unlock switch circuit
System is still set even when a rear door is open Door courtesy switch circuit
Even when the
system is not
setHorns sound
Theft deterrent horn sounds
Headlights stay on
Taillights stay onHorn relay circuit
Theft deterrent horn circuit
Headlight control relay circuit
Taillight control relay circuit
DI-241
DI-239
DI-244
DI-213
DI-246
DI-224
DI-213
DI-239
DI-246
DI-231
DI-228
DI-233
DI-235
DI-226
DI-213
DI-237
DI-241
DI-244
DI-231
DI-228
DI-233
DI-235
*1: If numbers are given to the circuit, proceed with troubleshooting in the order indicated by those numbers.
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-223
1996 TERCEL (RM440U)
PROBLEM SYMPTOMS TABLE
Proceed to the reference page shown in the matrix chart below for each malfunction symptom and trouble-
shoot for each circuit.
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.

N20823
BatteryMAIN FL2
F61
F7B-R B
Fusible Link
Block2
EA2B-R 2 2AM1
W-G 2 1
1B
1J W-G2Ignition Switch
3
B-Y4
1BCIG & RAD1
1DGRTheft Deterrent ECU
8
T3
ACC
I10Instrument Panel
Junction Block
Instrument Panel
Junction BlockACC
AM1
ALT
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-237
1996 TERCEL (RM440U)
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
DI4NA-02

- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-245
1996 TERCEL (RM440U)
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-26).
OK Check and replace theft deterrent ECU.*1
NG
Repair or replace harness or connector.
*1: When there is a malfunction that the theft deterrent system cannot be set, proceed to the next numbered
circuit inspection shown on matrix chart (See page DI-223).

N00280
DENSO
Borroughs
CH0087
CORRECTWRONG WRONG
P13685
CH0732
Disconnect Wire
from Terminal B
Generator
Voltmeter BatteryAmmeter
B
- CHARGINGCHARGING SYSTEM
CH-3
1996 TERCEL (RM440U)
(b) Using a belt tension gauge, check the drive belt tension.
Belt tension gauge:
DENSO BTG-20 (95506-00020)
Borroughs No. BT-33-73F
Drive belt tension:
New belt
Used belt160 ± 20 lbf
100 ± 20 lbf
If the belt tension is not as specified, adjust it.
HINT:

ºNew beltº refers to a belt which has been used less than
5 minutes on a running engine.

ºUsed beltº refers to a belt which has been used on a run-
ning engine for 5 minutes or more.

After installing a belt, check that it fits properly in the
ribbed grooved.

Check by hand to confirm that the belt has not slipped out
of the groove on the bottom of the pulley.

After installing a new belt, run the engine for about 5 min-
utes and recheck the belt tension.
4. VISUALLY CHECK GENERATOR WIRING AND
LISTEN FOR ABNORMAL NOISES
(a) Check that the wiring is in good condition.
(b) Check that there is no abnormal noise from the generator
while the engine is running.
5. INSPECT CHARGE WARNING LIGHT CIRCUIT
(a) Warm up the engine and then turn it off.
(b) Turn off all accessories.
(c) Turn the ignition switch ºONº. Check that the charge warn-
ing light is lit.
(d) Start the engine. Check that the light goes off.
If the light does not go off as specified, troubleshoot the charge
light circuit.
6. INSPECT CHARGING CIRCUIT WITHOUT LOAD
HINT:
If a battery/generator tester is available, connect the tester to
the charging circuit as per manufacturer's instructions.
(a) If a tester is not available, connect a voltmeter and amme-
ter to the charging circuit as follows:

Disconnect the wire from terminal B of the generator
and connect it to the negative (-) tester probe of the
ammeter.

BR0RE-01
BR5042
SST
BR5041
BR-10
- BRAKEBRAKE MASTER CYLINDER
1996 TERCEL (RM440U)
REMOVAL
1. REMOVE AIR CLEANER ASSEMBLY
2. DISCONNECT LEVEL WARNING SWITCH CONNEC-
TOR
3. DRAW OUT FLUID WITH SYRINGE
NOTICE:
Do not let brake fluid remain on a painted surface. Wash it
off immediately.
4. DISCONNECT BRAKE LINES
Using SST, disconnect the brake lines from the master cylinder.
SST 09751-3601 1
Torque: 15 N´m (155 kgf´cm, 11 ft´lbf)
5. REMOVE MASTER CYLINDER
(a) w/o ABS:
Remove the 2 mounting nuts, clamp and pull out the mas-
ter cylinder and gasket.
Torque: 13 N´m (130 kgf´cm, 9 ft´lbf)
(b) w/ ABS:
Remove the 2 mounting nuts, 2-way and pull out the
master cylinder and gasket.
Torque: 13 N´m (130 kgf´cm, 9 ft´lbf)

SR17T-02
- STEERINGNON-TIL T STEERING COLUMN
SR-17
1996 TERCEL (RM440U)
INSPECTION
NOTICE:
When using a vise do not overtighten it.
1. INSPECT STEERING LOCK OPERATION
Check that the steering lock mechanism operates properly.
2. IF NECESSARY, REPLACE KEY CYLINDER
(a) Place the ignition key at the ACC position.
(b) Push down the stop pin with a thin rod, and pull out the
key cylinder.
(c) Install a new cylinder.
HINT:
Make sure the ignition key is at the ACC position.
3. INSPECT IGNITION SWITCH (See page BE-1 1)
4. IF NECESSARY, REPLACE IGNITION SWITCH
(a) Remove the 2 screws.
(b) Install a new ignition switch with the 2 screws.
5. INSPECT KEY UNLOCK WARNING SWITCH
(See page BE-1 1)
6. IF NECESSARY, REPLACE KEY UNLOCK WARNING
SWITCH
(a) Remove the 2 screws.
(b) Install a new switch with the 2 screws.
7. A/T:
INSPECT KEY INTERLOCK SOLENOID
A132L A/T: (See page AX-24)
A242L A/T: (See page AX-28)
8. A/T:
IF NECESSARY, REPLACE KEY INTERLOCK SOLE-
NOID
(a) Remove the 2 screws.
(b) Install a new solenoid with the 2 screws.
9. INSPECT BEARING
Check the bearing rotation condition and check for abnormal
noise.
If the bearing is worn or damaged, replace the column tube.

RS02V-04
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-1
984 Author
: Date
:
1996 TERCEL (RM440U)
SRS AIRBAG
PRECAUTION
NOTICE:

The TERCEL is equipped with an SRS, which comprises a driver airbag and front passenger
airbag. Failure to carry out service operations in the correct sequence could cause the SRS to
unexpectedly deploy during servicing, possibly leading to a serious accident. Further, if a mis-
take is made in servicing the SRS, it is possible the SRS may fail to operate when required. Be-
fore performing servicing (including removal or installation of parts, inspection or replace-
ment), be sure to read the following items carefully, then follow the correct procedure described
in the repair manual.

Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most impor-
tant source of information when troubleshooting the SRS, always inspect the DTCs before dis-
connecting the battery.

Even in cases of a minor collision where the SRS does not deploy, the steering wheel pad, front
passenger airbag assembly and airbag sensor assembly should be inspected.
(See page RS-9, RS-22, RS-34)

Never use SRS parts from another vehicle. When replacing parts, replace them with new parts.

Never disassemble and repair the steering wheel pad, front passenger airbag assembly or air-
bag sensor assembly in order to reuse it.

If the steering wheel pad, front passenger airbag assembly or airbag sensor assembly has been
dropped, or if there are cracks, dents or other defects in the case, bracket or connector, replace
them with new ones.

Use a volt/ohmmeter with high impedance (10 kW/V minimum) for troubleshooting the system's
electrical circuits.

Information labels are attached to the periphery of the SRS components. Follow the instruction
on the notices.

After work on the SRS is completed, check the SRS warning light. (See page DI-148)

If the vehicle is equipped with a mobile communication system, refer to the precaution in the
IN section.
CAUTION:

Work must be started 90 seconds after the ignition switch is turned to the ºLOCKº position and
the negative (-) terminal cable is disconnected from the battery. (The SRS is equipped with a
back-up power source so that if work is started within 90 seconds of disconnecting the nega-
tive (-) terminal cable of the battery, the SRS may be deployed.)

When the negative (-) terminal cable is disconnected from the battery, the memory of the clock
and audio system will be canceled. So before starting work, make a record of the contents mem-
orized in the audio memory system. When work is finished, reset the audio systems as before
and adjust the clock. To avoid erasing the memory of each memory system, never use a back-
up power supply from outside the vehicle.

Before repairs, remove the airbag sensor if shocks are likely to be applied to the sensor during
repairs.

Do not expose the steering wheel pad, front passenger airbag assembly or airbag sensor as-
sembly directly to hot air or flames.

RS0Q8-02
N12248
R09725
Spiral Cable
H05490
N12151
RS-2
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
1996 TERCEL (RM440U)
OPERATION
1. STEERING WHEEL PAD (with AIRBAG)
The inflater and bag of the SRS are stored in the steering wheel
pad and cannot be disassembled. The inflater contains a squib,
igniter charge, gas generant, etc., and inflates the bag when
instructed by the airbag sensor assembly.
2. SPIRAL CABLE (in COMBINATION SWITCH)
A spiral cable is used as an electrical joint from the vehicle body
side to the steering wheel.
3. FRONT PASSENGER AIRBAG ASSEMBLY
The inflater and bag of the SRS are stored in the front passen-
ger airbag assembly and cannot be disassembled. The inflater
contains a squib, igniter charge and gas generant, etc., and in-
flates the bag when instructed by the airbag sensor assembly.
4. SRS WARNING LIGHT
The SRS warning light is located on the cluster finish panel. It
goes on to alert the driver of trouble in the system when a mal-
function is detected in the airbag sensor assembly. In normal
operating conditions when the ignition switch is turned to the
ACC or ON position, the light goes on for about 6 seconds and
then goes off.
5. AIRBAG SENSOR ASSEMBLY
The airbag sensor assembly is mounted on the floor inside the
console box. The airbag sensor assembly consists of airbag
sensor, safing sensor, diagnosis circuit, ignition control and
drive circuit, etc. It receives signals from the airbag sensor and
judges whether the SRS must be activated or not.