1986 TOYOTA CAMRY V20 warning

Low Oil Pressure Warning
INSPECTION OF PRESSURE WARNING
1. INSPECT WARNING LIGHT OPERATION
(a) Disconnect the connector from the pressure switch
and ground the connector on the wire harness side.
(b) Turn the ignition switch ON, check that t he warning
light lights.
If the warning light does not light, test the bulb.
2. INSPECT PRESSURE SWITCH OPERATION
(a) Disconnect the connector from the switch.
(b) Check that there is continuity between terminal and
ground with the engine stopped.
(c) Check that there is no continuity between terminal
and ground with the engine running.
HINT: Oil pressure should be over 0.3 kg/cm2 (4.3 psi, 29
kPa).
If operation is not as specified, replace the switch.If resistance value is not as specified, replace the send-
er gauge. 3. MEASURE SENDER GAUGE RESISTANCE
Measure the resistance between terminal and ground.
ater temperature oC
(OF)Resistance (
)
N i ppo nde nso Yazaki
± BODY ELECTRICAL SYSTEMCombination MeterBE±39

Brake Warning
INSPECTION OF BRAKE WARNING
1. INSPECT WARNING LIGHT OPERATION
(a) Disconnect the connectors from the level warning
switch and parking brake switch.
(b) Connect terminals on the wire harness side of the
level warning switch connector.
(e) Remove the CHARGE fuse and turn the ignition
switch
ON, check that the warning light lights.
If the warning light does not light, test the bulb.
2. INSPECT LEVEL WARNING SWITCH OPERATION
(a) Check that there is no continuity between terminals
with the switch OFF (float up).
(b) Check that there is continuity between terminals with
the switch ON (float down).
If operation is not as specified, replace the switch.
Open Door Warning
INSPECTION OF OPEN DOOR WARNING
1. INSPECT WARNING LIGHT OPERATION
(a) Disconnect the connector from the door courtesy switch
and ground it.
(b) Turn the ignition switch ON, check that the warning light
lights.
If the warning light does not light, test the bulb.
2. INSPECT COURTESY SWITCH OPERATION
(a) Check that there is continuity between terminal and
switch body with the switch pin released.
(b) Check that there is no continuity between terminal and
switch body when the switch pin is pushed in.
If operation is not as specified, replace the switch. 3. INSPECT PARKING BRAKE SWITCH OPERATION
(a) Check that there is continuity between terminal and
switch set nut with the switch pin released.
(Parking brake lever pulled up)
(b) Check that there is no continuity between terminal
and switch set nut with the switch pin pushed in.
(Parking brake lever released)
If operation is not as specified, replace the switch.
± BODY ELECTRICAL SYSTEMCombination MeterBE±40

Seat Belt Warning
INSPECTION OF SEAT BELT WARNING
1. INSPECT WARNING LIGHT OPERATION
(a) Disconnect the connector from the seat belt warning
relay and ground the terminal 5 on the wire harness
side.
(b) Turn the ignition switch ON, check that the warning
light lights.
If warning light does not light, test the bulb.
2. INSPECT BUCKLE SWITCH OPERATION
(a) Disconnect the connector from the switch.
(b) Check that there is no continuity between terminals
on the switch side connector with the belt fastened.
(c) Check that there is continuity between terminals on
the switch side connector with the belt unfastened.
If operation is not as specified, replace the seat belt inner.
3. INSPECT UNLOCK WARNING SWITCH OPERATION
(See page BE±1 3)
If operation is not as specified, replace the switch.
4. INSPECT SEAT BELT WARNING RELAY CIRCUIT
Disconnect the relay connector and inspect the connector
on the wire harness side as shown in the chart.
Unlock warning switch OFF (Ignition key removed)
If circuit is as specified, replace the relay.
Unlock warning switch ON (Ignition key set)
Buckle switch ON (Seat belt unfastened)Buckle switch OFF (Seat belt fastened)Courtesy switch ON (Door opened)
Turn ignition switch to OFF or ACCTurn ignition switch to OFF or ACC Courtesy switch OFF (Door closed)
Turn ignition switch ONTurn ignition switch ON
6 ± Ground
Tester
connectionSpecified value
Battery voltage
Battery voltage
Battery voltageBattery voltage
No continuity 1 ± Ground
2 ± Ground
3 ± Ground
5 ± Ground4 ± GroundContinuity
Continuity
ContinuityNo voltageNo voltageNo voltage
No voltage
Continuity Condition
Check for
VoltageVoltage
Always
± BODY ELECTRICAL SYSTEMCombination MeterBE±41

DOOR LOCK CONTROL SYSTEM
Wiring and Connector Diagrams
Door Lock Manual Switch
(Driver's: in Master Switch)
Door Lock Motor Door Courtesy SwitchDoor Lock Control
Relay Door Key Lock and
Unlock SwitchKey Unlock
Warning Switch
(Front Passenger's)
± BODY ELECTRICAL SYSTEMDoor Lock Control SystemBE±57

If continuity is not as specified, replace the switch.
Unlock Warning Switch
(See page BE±13)
Door Courtesy Switch
(See page BE±40)
Door Lock Control Switch
INSPECTION OF SWITCH
INSPECT SWITCH CONTINUITY
Inspect the switch continuity between terminals.
Master Switch
Door Lock Key Switch
INSPECTION OF SWITCH
INSPECT SWITCH CONTINUITY
Inspect the switch continuity between terminals.If continuity is not as specified, replace the switch.Back Door Switch
Switch
position
Door SwitchSwitch
position
Switch
position
Switch
position
Terminal
UNLOCK
TerminalTerminalTerminal
UNLOCKUNLOCKUNLOCK
LOCK
LOCKLOCK
LOCK
OFF
± BODY ELECTRICAL SYSTEMDoor Lock Control SystemBE±58

(Door Lock Signal)
HINT: When the relay circuit is as specified, inspect the
door lock signal.
(a) Connect the connector to the relay.
(b) Connect the positive (+) lead from the voltmeter
to terminal 3 and the negative (±) lead to the ter-
minal 4.
(c) Set the door lock manual switch to UNLOCK,
check
that the voltage rises from 0 volts to battery volt-
age for approximately 0.2 seconds.
Door Lock Control Relay
INSPECTION OF RELAY
(Relay Circuit)
Disconnect the connector from the relay and inspect the
connector on the wire harness side as shown in the chart.
If circuit is as specified, inspect the door lock signal.
OFF or lock
(Door key free or turned to lock)
Passenger's door courtesy
switch positionPassenger's ±door lock
switch positionDriver's door courtesty
switch position
Unlock (Door key turned to unlock) Door key lock and unlock
switch position Key unlock warning
switch positionOFF (Ignition key removed)
Door lock manual
switch position
Door lock manual
switch positionDriver's door lock
switch position
Ignition switch
positionON (ignition key set) ON (Door unlocked)
ON (Door unlocked) ON (Door opened)
Tester connection
OFF (Door locked)
ON (Door opened)OFF (Door locked)
OFF (Door closed)OFF (Door closed)Specified value
No continuity
Battery voltage Battery voltage OFF or UnlockNo continuity
No continuityNo continuity
No continuity
No continuity
No continuityNo continuity
Continuity OFF or Lock
No voltageContinuityContinuity
Continuity ContinuityContinuity
ContinuityContinuityContinuity
ACC or ON Continuity
ConditionCheck for
ConstantConstant
VoltageUnlock
LOCKLock
± BODY ELECTRICAL SYSTEMDoor Lock Control SystemBE±59

Computer
INSPECTION OF COMPUTER
INSPECT COMPUTER CIRCUIT
(a) Disconnect the computer connector and inspect the
connector on the wire harness side as shown in the
chart.
Automatic Shoulder Belt
Switch and Right Rear Limit
Switch
(Passenger's side)
Automatic Shoulder Belt
Switch and Left Front Limit
Switch
(Driver's side)
Automatic Shoulder Belt
Switch and Left Rear Limit
Switch
(Driver's side)Automatic Shoulder Belt
Switch and Right Front
Limit Switch
(Passenger's side)w/o Power door lock
Courtesy Switch
(Driver's side)
Unlock Warning Switch
Open RH front door and set shoulder
anchor at ex. front end position.
Close LH front door and/or set shoulder
anchor at front end position.Close RH front door and/or set shoulder
anchor at front end position.Close RH front door and set shoulder
anchor at ex. rear end position.
Open R H front door and set and/or
shoulder anchor at rear end position.
Open LH front door and set shoulder
anchor at ex. front end position.
Open LH front door and set and/or
shoulder anchor at rear end position.Close LH front door and set shoulder
anchor at ex. rear end position.
If circuit is as specified, replace the comput-
er.
Close driver's side door and/or
remove ignition key. Open driver's side door and set
ignition key. w/ Power door lock
Courtesy Switch (Driver's side)Push Down Release Lever
Warning Light
w/ Power door lock
Unlock Warning Switch
Release spool release lever.Pull up spool release lever.Turn ignition switch ON.
Seat Belt Warning LightTurn ignition switch OFF.
Turn ignition switch OFF.Turn ignition switch OFF.
Turn ignition switch ON.Turn ignition switch ON.
Buckle Switch
(Driver's side)Spool Release SwitchRemove ignition key. Tester
connection
Unfasten lap belt.
Specified
value
Set ignition key.
Battery voltage Ignition Switch
Battery voltage Battery voltage
Battery voltage
Fasten lap belt. Circuit Breaker
No continuity
No continuityNo continuity
No continuity No continuity
No continuity
No continuity
No continuity 15 ± Ground
No continuity 11 ± Ground 10 ± Ground
12 ± Ground
16 ± Ground
18 ± Ground13 ± Ground
17 ± GroundOpen door. Check item
7 ± Ground4 ± Ground
9 ± Ground7 ± Ground2 ± Ground
5 ± Ground Motor (RH)
Motor (Lh#)
Continuity
ContinuityNo voltage No voltage
No vohage Continuity
Continuity Continuity
ContinuityContinuity Continuity
Continuity
ContinuityContinuity Check for
Continuity ContinuityContinuity
Continuity Close door.
Continuity
ContinuityContinuityContinuity
ContinuityContinuity
Continuity
ContinuityContinuity
Condition
Voltage Voltage
VoftageVoltageAlways
AlwaysAlways
Always
Ground1±3
s±8
± BODY ELECTRICAL SYSTEMAutomatic Shoulder BeltBE±66

Seat Belt. Warning Light
INSPECTION OF WARNING LIGHT
INSPECT WARNING LIGHT OPERATION
(a) Disconnect the computer connector and ground the
terminal 10 of the wire harness side connector.
(b) Turn the ignition switch ON, check that the bulb lights.
If operation is not as specified, check the bulb.
Buckle Switch
INSPECTION OF SWITCH
INSPECT SWITCH CONTINUITY
(a) Check that there is continuity between terminals with
switch ON (unfasten lap belt).
(b) Check that there is no continuity between terminals
with switch OFF (fasten lap belt).
If continuity is not as specified, replace the switch.
Door Courtesy Switch (Driver's side)
INSPECTION OF SWITCH
INSPECT SWITCH OPERATION
(a) Check that there is continuity between terminal and
body ground with the switch ON (open door).
(b) Check that there is no continuity between terminal
and body ground with the switch OFF (close door).
If operation is not as specified, replace the switch.
Spool Release Switch
INSPECTION OF SWITCH
INSPECTION SWITCH CONTINUITY
(a) Check that there is continuity between terminals with
switch ON (pull up).
(b) Check that there is no continuity between terminals
with switch OFF (push down).
It continuity is not as specified, replace the switch.
Release Lever Warning Light
INSPECTION OF WARNING LIGHT
INSPECT WARNING LIGHT OPERATION
(a) Disconnect the computer connector. Ground the termi-
nal 2 of the wire harness side conne¿¿or.
(b) Turn the ignition switch ON, check that the bulb lights.
If operation is not as specif¿¿d, check the bulb.
± BODY ELECTRICAL SYSTEMAutomatic Shoulder BeltBE±67