electrical TOYOTA TERCEL 1996 Service Owner's Manual

PP184-01
PP-74
- PREPARATIONBODY ELECTRICAL
1996 TERCEL (RM440U)
EQUIPMENT
Test lead
Bulb (3.4 W)Fuel sender gauge, Seat belt warning relay
Bulb (21 W)Turn signal flasher relay
Dry cell batteryFuel sender gauge
Torque wrench
Masking tapeRear window defogger wire
Tin foilRear window defogger wire

PP185-01
- PREPARATIONBODY ELECTRICAL
PP-75
1996 TERCEL (RM440U)
SSM (Special Service Materials)
08888-88888DuPont Paste No. 4817 or
equivalentRear window defogger

PP3IN-01
PP-82
- PREPARATIONAIR CONDITIONING
1996 TERCEL (RM440U)
RECOMMENDED TOOLS
09082-00040TOYOTA Electrical Tester.

SS0ME-05
SS-40
- SERVICE SPECIFICATIONSBODY ELECTRICAL
170 Author
: Date
:
1996 TERCEL (RM440U)
BODY ELECTRICAL
SERVICE DATA
INTEGRATION RELAY
Key Unlock Warning System:
2 - Ground (Ignition switch LOCK or ACC)No voltage
2 - Ground (Ignition switch ON)Battery positive voltage
3 - Ground (Constant)Battery positive voltage
9 - Ground (Ignition switch LOCK or ACC)No voltage
9 - Ground (Ignition switch ON)Battery positive voltage
12 - Ground (Constant)Battery positive voltage
DAYTIME RUNNING LIGHT MAIN RELAY
2 - Ground (Ignition switch LOCK or ACC)No voltage
2 - Ground (Ignition switch ON)Battery positive voltage
18 - Ground (Ignition switch LOCK or ACC)No voltage
18 - Ground (Ignition switch ON)Battery positive voltage
4 - Ground (Constant)Battery positive voltage
6 - Ground (Constant)Battery positive voltage
10 - Ground (Constant)Battery positive voltage
11 - Ground (Engine stop)No voltage
11 - Ground (Engine running)Battery positive voltage
15 - Ground (Constant)Battery positive voltage
TURN SIGNAL FLASHER
Flashes/Minute60 - 120
SPEEDOMETER (USING A SPEEDOMETER TESTER)
Standard indication (mph)Allowable range (mph)
2018 - 24
4038 - 45
6059 - 67
8079 - 88
100100 - 110
Standard indication (km/h)Allowable range (km/h)
2016 - 26
4038 - 48
6059 - 69
8076 - 90
10096 - 110
120114 - 131
140134 - 152
160152 - 174
TACHOMETER (ON-VEHICLE)DC 13.5 V 25°C (77°F)
Standard indication (rpm)Allowable range (rpm)
700610 - 750
3,0002,850 - 3,150
5,0004,850 - 5,150
7,0006,790 - 7,210

- SERVICE SPECIFICATIONSBODY ELECTRICAL
SS-41
171 Author
: Date
:
1996 TERCEL (RM440U) FUEL RECEIVER GAUGE
w/ Tachometer:Resistance (W)
A - BApprox. 115.8
A - CApprox. 177.2
B - CApprox. 61.4
w/o Tachometer:Resistance (W)
A - BApprox. 171.2
A - CApprox. 272.8
B - CApprox. 101.6
FUEL SENDER GAUGE
Float position: mm (in.)Resistance (W)
F: Approx. 13.0 ± 3 (0.512 ± 0.118)Approx. 3 ± 1.0
1/2: Approx. 61.0 (2.402)Approx. 29 ± 4.8
E: Approx. 124.0 ± 3 (4.882 ± 0.118)Approx. 110 ± 7.7
ENGINE COOLANT TEMPERATURE RECEIVER GAUGE
w/ Tachometer:Resistance (W)
A - BApprox. 51.0
A - CApprox. 148.6
B - CApprox. 199.6
w/o Tachometer:Resistance (W)
A - BApprox. 54.0
A - CApprox. 175.7
B - CApprox. 229.7
DEFOGGER SWITCH
Timer Circuit:
2 - Ground (Ignition switch LOCK or ACC)No voltage
2 - Ground (Ignition switch ON)Battery positive voltage
6 - Ground (Ignition switch LOCK or ACC)No voltage
6 - Ground (Ignition switch ON)Battery positive voltage

DI95O-01
H09395h-10-2-D
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-153
1996 TERCEL (RM440U)
TERMINALS OF ECM
No.SymbolTerminal Name
A-Electrical Connection Check Mechanism
B-Electrical Connection Check Mechanism
1P-Squib  (Passenger)
2P+Squib
(Passenger)
3D-Squib  (Driver)
4D+Squib
(Driver)
5E1Ground
6E2Ground
7TcDiagnosis
8LASRS Warning Light
9IG2Power Source (IGN Fuse)
10ACCPower Source (CIG Fuse)

SF1PQ-02
- MFIMFI SYSTEM
MF-1
525 Author
: Date
:
1996 TERCEL (RM440U)
MFI SYSTEM
PRECAUTION
1. BEFORE WORKING ON FUEL SYSTEM, DISCON-
NECT NEGATIVE (-) TERMINAL CABLE FROM BAT-
TERY
HINT:
Any diagnostic trouble code retained by the computer will be
erased when the negative (-) terminal cable is disconnected.
Therefore, if necessary, read the diagnosis before disconnect-
ing the negative (-) terminal cable from the battery.
2. DO NOT SMOKE OR WORK NEAR AN OPEN FLAME
WHEN WORKING ON THE FUEL SYSTEM
3. KEEP GASOLINE AWAY FROM RUBBER OR LEATH-
ER PARTS
4. MAINTENANCE PRECAUTIONS
(a) In event of engine misfire, the following precautions
should be taken.
(1) Check proper connection to battery terminals, etc.
(2) Handle higt-tension cords carefully.
(3) After repair work, check that the ignition coil termi-
nals and all other ignition system lines are recon-
nected securely.
(4) When cleaning the engine compartment, be espe-
cially careful to protect the electrical system from
water.
(b) Precautions when handling the oxygen sensor.
(1) Do not allow the oxygen sensor to drop or hit
against an object.
(2) Do not allow the sensor to come into contact with
water.
5. IF VEHICLE IS EQUIPPED WITH MOBILE RADIO SYS-
TEM (HAM, CB, ETC.)
If the vehicle is equipped with a mobile communication system,
refer to the precaution in the IN section.
6. AIR INDUCTION SYSTEM
(a) Separation of the engine oil dipstick, oil filler cap, PCV
hose, etc. may cause the engine out of tune.
(b) Disconnection, looseness or cracks in the parts of the air
induction system between the throttle body and cylinder
head will cause air suction and cause the engine out of
tune.
7. ELECTRONIC CONTROL SYSTEM
(a) Before removing MFI wiring connectors, terminals, etc.,
first disconnect the power by either turning the ignition
switch to LOCK or disconnecting the negative (-) terminal
cable from the battery.

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.

Z05953
Spacer
Housing
Female
Male
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-3
1996 TERCEL (RM440U)
6. SRS CONNECTORS
No.ItemApplication
(1)Terminal Twin-Lock MechanismConnectors 1, 2, 3, 4, 5, 6, 7
(2)Airbag Activation Prevention MechanismConnectors 2, 3, 4
(3)Electrical Connection Check MechanismConnectors 1
(4)Connector Twin-Lock MechanismConnectors 2, 3, 4
(a) All connectors in the SRS are colored in yellow to distin-
guish them from other connectors. Connectors having
special functions and specifically designed for SRS are
used in the locations shown above to ensure high reliabil-
ity. These connectors use durable gold-plated terminals.
(1) Terminal Twin-Lock Mechanism
Each connector has a two-piece construction con-
sisting of a housing and a spacer. This secures the
locking of the terminal by two locking devices (the
spacer and the lance) to prevent terminals from
coming out.