1986 TOYOTA CAMRY V20 fuse

Light Control Rheostat
TAIL Fuse
IGN Fuse
Water Temperature Sender Gauge
Ground
Seat Beh Warning Relay
Brake Fluid Level Warning Switch and Parking
Brake Switch
CHARGE Fuse
TCCS ECU
A.B.S. ECU
Cruise Control ECU and ECT ECU
Ground
Fuel Sender Gauge Terminal 3
Fuel Sender Gauge Terminal 2
GAUGE Fuse
DOME Fuse
Door Courtesy Switch
Low Oil Pressure Switch
Light Failure Sensor
Combination Meter and Gauges
(w/o Tachometer)
Turn Signal Switch Terminal 28
Ground
Turn Signal Switch Terminal 25
Turn Signal Switch Terminal 23 (USA)
HEAD±HI (RH) Fuse (CANADA)
A/T Oil Temperature Switch
COMBINATION METER CIRCUIT
Wiring Connector Side
No.
± BODY ELECTRICAL SYSTEMCombination MeterBE±32

Light Control Rheostat
TAIL Fuse
IGN Fuse
Water Temperature Sender Gauge
Ground
Seat Belt Warning Relay
Brake Fluid Level Warning Switch and Parking
Brake Switch
CHARGE Fuse
TCCS ECU ,
A. B. S. ECU
Cruise Control ECU and ECT ECU
Ground
Fuel Sender Gauge Terminal 3
Fuel Sender Gauge Terminal 2
. GAUGE Fuse
DOME Fuse
Door Courtesy Switch
Low Oil Pressure Switch
Light Failure Sensor
Turn Signal Switch Terminal 28
Ground
Turn Signal Switch Terminal 25
Turn Signal Switch Terminal 23 (USA)
HEAD±HI (RH) Fuse (CANADA)
A/T Oil Temperature Switch
Igniter
Combination Meter and Gauges
(w/ Tachometer)
COMBINATION METER CIRCUIT
Wiring Connector Side
No.
± BODY ELECTRICAL SYSTEMCombination MeterBE±33

Neutral Start Switch
Neutral Start Switch
Neutral Start Switch
GAUGE Fuse
Neutral Start Switch
TAIL Fuse
Neutral Start Switch
Neutral Strat Switch
Light Control Rheostat
Ground
OD Main Switch
Pattern Select Switch
Pattern Select Switch
Shift Position Indicator (A/T)
SHIFT
POSITION INDICATOR CIRCUIT
Wiring Connector Side
No.
± BODY ELECTRICAL SYSTEMCombination MeterBE±34

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

Rear Window Defogger Switch
INSPECTION OF SWITCH
INSPECT SWITCH OPERATION
(a) Connect the positive (+) lead from the battery to
terminal 2 and the negative (±) lead to terminal 3.
(b) Connect terminals 2 and 6 through a 3.4 W test bulb.
(e) Push the defogger switch. Check that the test bulb
lights for 12 to 18 minutes, then the test bulb goes
out.
If operation is not as specified, replace the switch.
Rear Window Defogger Relay
INSPECTION OF RELAY
1. INSPECT RELAY CONTINUITY
(a) Check that there is continuity between terminals 1
and 3.
(b) Check that there is no continuity between terminals 2
and 4.
(e) Check that there is no continuity between terminals 3
and 4.
If continuity is not as specified, replace the relay.
Reset breaker and check for short
Replace fuse and check for short
Check switch
Check relay
Check wires
Repair as necessary
REAR WINDOW DEFOGGER
Troubleshooting
Circuit breaker OFF
GAUGE fuse blown
Defogger switch faulty
Defogger relay faulty
Defogger wire broken
Wiring and ground faulty Rear window defogger
does not work.BE±3
BE±3
BE±42
BE±42
BE±43 Possible cause Problem
Remedy
Page
± BODY ELECTRICAL SYSTEMRear Window DefoggerBE±42

Heater Blower Switch
(Lever Type)
INSPECTION OF SWITCH
INSPECT SWITCH CONTINUITY
Inspect the heater blower switch continuity.
Control cables broken or binding
Servo motor faulty
Heater hoses leaking or clogged
Water valve faulty
Air dampers broken
Air ducts clogged
Heater radiator leaking or clogged
Heater control unit faulty Heater circuit breaker OFF
GAUGE fuse blown
Heater relay faulty
Blower speed control relay faulty
Heater blower switch faulty
Heater blower resistor faulty
Heater blower motor faulty wiring or
ground faultyReset breaker and check for short
Replace fuse and check for short
Check relay
Check control relay
Check switch
Check resistor
Check motor
Repair as necessary
Check cables
Check servo motor
Replace hoses
Replace water valve
Repair air dampers
Repair air ducts
Repair heater radiator
Repair control unit
*For illumination light
If continuity is not as specified, replace the switch.
Troubleshooting
BE±3
BE±3
BE±48
BE±50
BE±49
BE±48 Bolwer does not
work when fan
switch is on
Incorrect temperature
outputBE±3
BE±3
BE±48
Switch position Possible cause
BE±47
BE±48
Terminal Problem
Remedy
Lever
BE±52
Page
BE±54 Push
OFF
± BODY ELECTRICAL SYSTEMHeaterBE±47

1. DEAD RADIO AND TAPE PLAYER
(a) No power to radio or tape player, or power but no sound.
Possible causes:
wBlown RADIO fuse
wShort circuit or broken wire in power source wire harness
,
wLoose connectors behind radio and tape player
wLoose speaker connector
wDefective speaker
wBroken wire in speaker wire harness
wImproperly installed radio or tape player
wDefective radio or tape player
Inspect and repair wire harness
for radio and tape player.Check for short circuit in
power source wire harness.
DESCRIPTION OF SYMBOLS
Replace radio and tape
player. Check RADIO fuse.
Proceed to Test 2.
Does not blow
Replace fuse.
Blows again TEST 1No short
Blown
Short
± BODY ELECTRICAL SYSTEMAudio SystermBE±95

(b) Tape player okay but not sound from either the FM or
AM band.
Possible causes:
wAntenna disconnected
wAntenna plug not properly connected
wDefective antenna
wDefective antenna cable
wDefective radio or tape player
wBlown DOME fuse
wShort circuit or broken wire in wire harness for
backup power source
Are all connectors behind radio and
tape player properly connected
Is there continuity in speaker
wire harness?Inspect and repair power wire
harness to radio and player.
Temporarily install another
speaker.Is there power to radio and
player connectors?
Inspect and repair speaker
wire harness.
IS radio electronic searchAre speaker connectors connected?Are radio and player
properly connected?
Proceed to Test 1 of
following item.Replace radio and
tape player.
Is either AM or FM okay? Connect properly.Properly reinstall. Connect properly.
Proceed to Test 3.Replace speaker. Proceed to Test 3.
Proceed to Test 2. w/o PlayerYe s TEST 2
TEST 3
TEST 1
Ye s
Ye s
Ye s
Ye s
Ye s Ye s
± BODY ELECTRICAL SYSTEMAudio SystemBE±96