relay TOYOTA CAMRY V20 1986 Service Information

(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

Door Lock Solenoid
INSPECTION OF DOOR LOCK
SOLENOID
1. INSPECT SOLENOID OPERATION
(Front and Rear door)
(a) Connect the positive (+) lead from the battery to
terminal 4 and negative(±) lead to terminal 3, check
that the solenoid operation in the lock (Pull) direction.
(b) Check that there is no continuity between terminals
1 and 2.
(c) Connect the positive (+) lead from the battery to termi-
nal 3 and negative (±) lead to terminal 4, check that
the solenoid operation in the unlock (Push) direction.
(d) Check that there is continuity between terminals 1
and 2.
If operation is not as specified, replace the solenoid.
(c) Connect the positive (+) lead from the battery to ter-
minal 4 and negative (±) lead to terminal 2, check that
the solenoid operation in the unlock (Push) direction.
(d) Check that there is continuity between terminals 1
and 3.
If operation is not as specified, replace the solenoid. (Back door)
(a) Connect the positive (+) lead from the battery to
terminal 2 and negative (±) lead to terminal 4, check
that the solenoid operation in the lock (Pull) direction.
(b) Check that there is no continuity between terminals
1 and 3. (d) Reverse the polarity of the voltmeter leads.
(e) Set the door lock manual switch to LOCK, check that
the voltage rises from 0 volts to battery voltage for
approximately 0.2 seconds.
If operation is not as specified, replace the relay.
± BODY ELECTRICAL SYSTEMDoor Lock Control SystemBE±60

Moon Roof Motor
INSPECTION OF MOTOR
INSPECT MOTOR OPERATION
(a) Connect the positive (+) lead from the battery to term
inall andnegative(±)lead toterminal2,check that
the motor turns.
(b) Connect the positive (+) lead from the battery to
terminal 2 and negative (±) lead to terminal 1, check
that the motor turns the opposite way.
If operation is not as specified, replace the motor.
Moon Roof Control Relay
INSPECTION OF RELAY
INSPECT RELAY VOLTAGE AND CONTINUITY
(a) Disconnect the relay connector and inspect the con-
nector on the wire harness side as shown in the
chart.
Limit Switch
INSPECTION OF SWITCH
INSPECT SWITCH CONTINUITY
(a) Check that there is continuity between terminals 1
and 4 when the switch is ON.
(b) Check that there is no continuity between terminals
1 and 4 when the switch is OFF.
If continuity is not as specified, replace the switch.
MOON ROOF
Moon Roof Switch
INSPECTION OF SWITCH
INSPECT SWITCH CONTINUITY
Inspect the switch continuity between terminals.
If continuity is not as specified, replace the
switch.
Switch positionTerminal
CLOSEOPEN
± BODY ELECTRICAL SYSTEMMoon RoofBE±61

(b) Connect the positive lead from the battery to termi-
nal 1 and±negative (±y lead to terminal 5, check that
the motor turns to close. Then, reverse the polarity,
check that the motor turns to open. 1f motor does not
operate, remove and test the motor.
If circuit operation is correct, replace the relay.
Push sun roof switch to except CLOSE
Push sun roof switch to except OPEN Push sun roof switch to CLOSE
Push sun roof switch to OPEN Turn ignition switch OFFTurn ignition switch ON
Push limit switch ON
Push limit switch OFFSpecified value Tester
connection
10 ± Body ground
12 ± Body ground8 ± Body ground 4 ± Body ground
6 ± Body ground
7 ± Body groundBattery voltage
No continuity
No continuity No continuity
Continuity Continuity
Continuity
Continuity Continuity
Continuity No.voitage
Continuity Continuity
Continuity Continuity
ConditionCheck for
Voltage
± BODY ELECTRICAL SYSTEMMoon RoofBE±62

1. INSPECT RELAY OPERATION (ANTENNA UP)
(a) Connect the voltmeter positive (+) lead to terminal 1
and the negative (±) lead to terminal 4.
(b) Connect the positive (+) lead from the battery to terminals
6, 7 and 8. Connect the negative (±) lead to terminal 3.
(c) Check that there is battery voltage.
HINT: Measure the voltage within 7 seconds after con±
necting the positive (+) battery lead to terminals 8.
2. INSPECT RELAY OPERATION (ANTENNA DOWN)
(a) Connect the voltmeter positive (+) lead to terminal 4
and the negative (±) lead to terminal 1.
(b) Connect the positive (+) lead from the battery to terminals
6 and 7. Connect the negative (±) lead to terminal 2.
(e) Disconnect the positive (+) battery lead from terminal 6.
(d) Check that there is battery voltage.
HINT: Measure the voltage within 7 seconds after disconnect±
ing the positive (+) battery lead from terminal 6.
3. INSPECT RELAY OPERATION (ANTENNA STOP)
(a) Connect the voltmeter positive (+) lead to terminal 1
and the negative (±) lead to terminal 4.
(b) Connect the positive (+) lead from the ±battery to termi-
nals 7 and 9. Connect the negative (±) lead to terminal 2.
(c) Check that there is no battery voltage.
If operation is not as specified, replace the relay.
Antenna Motor
INSPECTION OF ANTENNA MOTOR
INSPECT LIMIT SWITCH OPERATION
(a) If the motor stops with the antenna up, check that
there is no continuity between terminals A±2 and
B±1.
(b) If the motor stops with the antenna down, check that
there is no continuity between terminals A±3 and
B±1.
If continuity is not as specified, replace the motor.
Antenna Motor Control Relay
INSPECTION OF ANTENNA MOTOR
CONTROL RELAY
± BODY ELECTRICAL SYSTEMAudio SystemBE±102

Deceleration sensor
Deceleration sensor installation
Wire harness and connector of
deceleration sensor
Pump motor of actuator locked or open circuit in pump motor
circuit in actuatorActuator inside wire harness
Pump motor relay
Wire harness and connector
of pump motor relay circuit Actuator inside wire harness
Solenoid relay
Wire harness and connector of solenoid
relay circuit
Speed sensor
Sensor rotor
Wire harness and connector of
speed sensor
Pump motor, relay and battery
Wire harness, connector and ground
bolt or actuator pump motor circuit Open or short circuit in 3 position solenoid of front right wheel
Actuator solenoid
Wire harness and connector of
actuator solenoid circuit Open or short circuit in 3 position solenoid of rear right wheel Open or short circuit in 3 position solenoid of front left wheel
Open or short circuit in 3 position solenoid of rear left wheel
Open circuit in front left or rear right wheel speed sensor
Open circuit in front right or rear left wheel speed
sensorRear right wheel speed sensor signal malfunction
Abnormally high battery voltage 0 6.2 V or higher) Front right wheel speed sensor signal malfunction
Front left wheel speed sensor signal malfunction
Rear left wheel speed sensor signal malfunction
Open or short circuit in deceleration sensor Short circuit in pump motor relay circuit Open circuit in pump motor relay circuit
Low battery voltage (9.5 V or lower) Open circuit in solenoid relay circuit
Short circuit in solenoid relay circuit
DIAGNOSTIC CODE
Battery
Voltage regulator
Malfunction in deceleration sensorWrong both rear axle hubs
Malfunction in computerRear sensor rotors
Computer Light Pattern
Trouble Part Diagnosi
s Code No.
± BRAKE SYSTEMlock Brake System (A.B.S.)BR±69

6. REMOVE BRAKE TUBES
(w/o LSPV)
Using SST, remove the five brake tubes from the actuator.
SST 09751±36011
(w/ LS PV)
Using SST, remove the four brake tubes from actuator.
SST 09751±36011
7. REMOVE PROPORTIONING VALVE OR THREE±WAY
UNION
(w/o LSPV)
(a) Remove the two bolt and remove the proportioning
valve from the actuator.
(b) Remove the bolt and remove the valve bracket. 6. REMOVE CONTROL RELAYS
(a) Remove the connector from the wire harness clarnp.
(b) Remove the screw and remove the wire harness
clamp.
(d) Remove the relay cap from the control relays.
(e) Remove the two control relays from the actuator. (e) Remove the relay case.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±88

4. INSTALL THREE CUSHIONS AND HOLDERS
Install the three cushions to holders and install them to the
actuator. 3. INSTALL CONTROL RELAYS
(a) Install the two control relays in position.
(b) Install the relay cap onto the control relays.
5. INSTALL CONNECTOR TO CLAMP
Install the connector to the wire harness clamp.(d) Install the wire harness clamp with a screw.(c) Install the relay case.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±91

5. INSPECT SOLENOID RELAY OPERATION
(a) Apply battery voltage to terminals 1 and 3.
(b) Check that there is continuity between terminals 4
and 5.
(c) Check that there is no continuity between terminals 2
and 4.
If operation is not as specified, replace the relay.
6. INSTALL TWO CONTROL RELAYS4. INSPECT SOLENOID RELAY CONTINUITY
(a) Check that there is continuity between terminals 1
and 3.
(b) Check that there is continuity between terminals 2
and 4.
(c) Check that there is no continuity between terminals 4
and 5.
If continuity is not as specified, replace the relay. 2. INSPECT PUMP MOTOR RELAY CONTINUITY
(a) Check that there is continuity between terminals 1
and 2.
(b) Check that there is no continuity between terminals
3 and 4.
(c) Check that there is no continuity between terminals
1 and 4.
If continuity is not as specified, replace the relay.
3. INSPECT PUMP MOTOR RELAY OPERATION
(a) Apply battery voltage to terminals 1 and 2.
(b) Check that there is continuity between terminals 3
and 4.
(c) Check that there is no continuity between terminals
1 and 4.
If operation is not as specified, replace the relay.
Control Relays
INSPECTION OF CONTROL RELAYS
1. REMOVE CONTROL RELAYS
Remove the two control relays from the actuator.
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±93

Anti±lock Brake System Circuit
INSPECTION OF SYSTEM CIRCUIT
1. INSPECT SYSTEM CIRCUIT WITH CONNECTOR
CONNECTED
(a) Remove the A.B.S. computer.
(b) Using a voltmeter with high impedance (10 K

/V
minimum), measure the voltage at each terminal and
body ground.
If the circuit is not as specified, check and repair or re-
place the trouble part shown in the table above.
Ignition switch on and ºANTI LOCKº warning light goes on
Ignition switch on and ºANTI LOCKº warning light goes on
Ignition switch on and ºANTI LOCKº warning light goes onIgnition switch on and ºANTI LOCKº warning light goes on Ignition switch on and ºANTI LOCKº warning light goes on
Ignition switch on and ºANTI LOCKº warning light goes on
Check connector connectedºANTI LOCKº
warning light bulb
Check connector disconnected
Check connector,
computer Actuator, control
relays
AST ± Body groundSRR ± Body groundSRl ± Body ground SFR ± Body groundSFL ± Body ground
W ± Body ground
T ± Body ground Tester Connection
Ignition switch on Ignition switch on
Ignition switch on Ignition switch on
Ignition switch on Ignition switch on
Battery voltage Battery voltage
Battery voltage Battery voitage Battery voltage
Battery voltage Battery voltageTrouble Part
About 0 V
About 0 V About 0 V About 0 V
About 0 V
About 0 V
About 0 V ConditionVoltage
± BRAKE SYSTEMAnti±lock Brake System (A.B.S.)BR±102