warning light TOYOTA LAND CRUISER 1986 Factory Repair Manual

MET Fuse Light Control Switch Flasher Relay
ABS, TRC, VSC ECU ABS, TRC, VSC ECU Drive Monitor H/L R-HI Fuse Body ECU
ABS, TRC, VSC ECU
ABS & BA & TRAC & VSC Actuator ECM
ABS, TRC, VSC ECU
Airbag ECU
Oil Pressure Sender Gauge Airbag ECU Body ECUWiring connector side No.107 6
19 18 175 3
12
20 15
16
17
18
19
7 4 1
C14 C13 C12
11
Gateway ECU
ECM Engine Ground
Main Fuel Sender Gauge
7
19
201
2
4
C15Key Unlock Warning Switch 9CTR DIFF Switch 14
Drive Monitor 16 10 ECM
Body (Door Courtesy Switch Signal) 10Flasher Relay 4
ABS, TRC, VSC ECU
ABS, TRC, VSC ECU
ABS, TRC, VSC ECU
GAUGE1 Fuse
ECU-B2 Fuse
ACC Fuse
DOME Fuse
Speed Sensor 11
12
13
14
15Main Fuel Sender Gauge
Light Control Rheostat 6 Main Fuel Sender GaugeBody Ground 9
Speed Control Unit 16PANEL Fuse 8
11 Driver Seat Belt Buckle Switch
- BODY ELECTRICALCOMBINATION METER
BE-61
2434 Author
: Date
:
2004 LAND CRUISER (RM1071U)

BE2EF-01
1
2
3
4
5
6
7
8
9
1012
13
14
15
16
17
18
19
20 1120
19
18
17
16
15
14
13
12
1110
9
8
7
6
5
4
3
2
11
2
3
4
5
6
7
8
9
1012
13
14
15
16
17
18
19
20 11
20
19
18
17
16
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12
1110
9
8
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4
3
2
1
I29077
Connector C15 Connector C14 Connector C13 Connector C12
- BODY ELECTRICALCOMBINATION METER
BE-63
2436 Author
: Date
:
INSPECTION
1. INSPECT COMBINATION METER CIRCUIT
Connect the connector C12, C13, C14 and C15 to the combina-
tion meter and inspect the wire harness side connectors from
the back side as shown in the table.
Tester connectionConditionSpecified condition
C12 3 (DOOR ) G dEither door is openedBelow 1 VC12-3 (DOOR-) - GroundEither door is closed10 - 14 V
C12 4 (TURN L) G d
Ignition switch ON and
turn signal switch OFF or RIGHTBelow 1 V
C12-4 (TURN-L) - GroundIgnition switch ON and
turn signal switch LEFTPulse signal is output
10 - 14 V eBelow 1 V
C12 5 (BEAM ) G dIG switch ON, light control switch OFFBelow 1 VC12-5 (BEAM+) - GroundIG switch ON, light control switch ON10 - 14 V
C12 6 (TURN R) G d
Ignition switch ON and
turn signal switch OFF or LEFTBelow 1 V
C12-6 (TURN-R) - GroundIgnition switch ON and
turn signal switch RIGHTPulse signal is output
10 - 14 V eBelow 1 V
C12-7 (BEAM-) - GroundIG switch ON, light control switch ONBelow 1 V
C12 10 (CHG ) G dIgnition switch OFFBelow 1 VC12-10 (CHG+) - GroundIgnition switch ON10 - 14 V
C12 12 (ABS) G d
Ignition switch ON and ABS warning light lights
upBelow 1 V
C12-12 (ABS) - GroundIgnition switch ON and
ABS warning light does not light up10 - 14 V
C13 8 (ILL ) G dIG switch OFFBelow 1 VC13-8 (ILL+) - GroundIG switch ON10 - 14 V

BE-64
- BODY ELECTRICALCOMBINATION METER
2437 Author
: Date
:
C13 1 1 (CHECK E/G) G dIgnition switch ON and engine is stoppedBelow 1 VC13-1 1 (CHECK E/G) - GroundIgnition switch ON and engine is running10 - 14 V
C13-14 (CTR DIFF/4WD) - GroundIgnition switch ON and
center diff. lock switch OFFBelow 1 V
C13-14 (CTR DIFF/4WD) - GroundIgnition switch ON and
center diff. lock switch ON10 - 14 V
C13 15 (SLIP) G dIG switch ON, SLIP warning light ONBelow 1.5 VC13-15 (SLIP) - GroundIG switch ON, SLIP warning light OFF10 - 14 V
C13 16 (VSC TRC) G dIG switch ON, VSC TRC indicator light ONBelow 1.5 VC13-16 (VSC TRC) - GroundIG switch ON, VSC TRC indicator light OFF10 - 14 V
C13 17 (VSC OFF) G dIG switch ON, VSC OFF indicator light ONBelow 1.5 VC13-17 (VSC OFF) - GroundIG switch ON, VSC OFF indicator light OFF10 - 14 V
C13 18 (ACTIVE TRC) G dIG switch ON, TRC OFF indicator light ONBelow 1.5 VC13-18 (ACTIVE TRC) - GroundIG switch ON, TRC OFF indicator light OFF10 - 14 V
C13 19 (RSCA OFF) G dIG switch ON, RSCA warning light ONBelow 2.0 VC13-19 (RSCA OFF) - GroundIG switch ON, RSCA warning light OFF10 - 14 V
C14-4 (AIR BAG-) - GroundIgnition switch ON and
SRS indicator light lights upBelow 1 V
C14-4 (AIR BAG-) - GroundIgnition switch ON and
SRS indicator does not light up10 - 14 V
C14 7 (OIL PRS SDR) G dIgnition switch ON and indicator ONBelow 1 VC14-7 (OIL PRS SDR) - GroundIgnition switch ON and indicator OFF10 - 14 V
C14-10 (T/M PULSE) - GroundEngine is RunningPulse generation
C14 1 1 (D BKL SW) G dIgnition switch ON and seat belt is unfastened10 - 14 VC14-1 1 (D-BKL SW) - GroundIgnition switch ON and seat belt is fastenedBelow 1 V
C14 18 (PKB SW) G d
Ignition switch ON and
parking brake lever is pulledBelow 1 V
C14-18 (PKB SW) - GroundIgnition switch ON and
parking brake lever is released10 - 14 V
C14 20 (BRAKE) G d
Ignition switch ON and brake system indicator
ONBelow 1 V
C14-20 (BRAKE) - GroundIgnition switch ON and brake system indicator
OFF10 - 14 V
C15-1 (E/G EARTH) - GroundConstantContinuity
C15-2 (MAIN FE) - GroundConstantContinuity
C15-4 (MAIN FV) - GroundIgnition switch ON4.5 - 5.5 V
C15 6 (MAIN FR) G d
Ignition switch ON and
fuel sender gauge float UPApprox. 0.5 V
C15-6 (MAIN FR) - GroundIgnition switch ON and
fuel sender gauge float DOWNApprox. 5.5 V
C15 7 (ILL ) G d
Ignition switch ON and
light control rheostat volume minimumBelow 1 V
C15-7 (ILL-) - GroundIgnition switch ON and
light control rheostat volume maximum10 - 14 V
Key unlock warning switch ON (Key is inserted)Below 1 V
C15-9 (KEY SW) - GroundKey unlock warning switch OFF
(Key is removed)10 - 14 V

I06184
F
1/2
E 321
- BODY ELECTRICALCOMBINATION METER
BE-67
2440 Author
: Date
:
6. INSPECT FUEL SENDER GAUGE VOLTAGE
(a) Apply voltage (4.5 V - 5.0 V) between terminals 2 and 3.
(b) Measure voltage between terminals 1 and 2 for each float
position.
Float position mm (in.)Voltage (V)
F: Approx. 85.3 (3.36)Approx. 4.60 ± 0.1
1/2: Approx. 1.7 (0.67)Approx. 2.45 ± 0.1
E: Approx. 91.9 (3.62)Approx. 0.30 ± 0.1
If voltage value is not as specified, replace main sender gauge.
7. INSPECT LOW OIL PRESSURE WARNING LIGHT
(a) Disconnect the connector from the low oil pressure
switch.
(b) Turn the ignition switch ON.
(c) Connect the terminal of wire harness side connector and
ground, then check the warning light.
8. INSPECT PARKING BRAKE WARNING LIGHT
(a) Disconnect the connector from the parking brake switch
and ground terminal on the wire harness side connector.
(b) Turn the ignition switch ON and check that the warning
light lights up.
9. INSPECT BRAKE WARNING LIGHT
(a) Disconnect the connector from the brake fluid level warn-
ing switch and ground terminal on the wire harness side
connector.
(b) Turn the ignition switch ON and check that the warning
light lights up.
10. INSPECT BRAKE FLUID LEVEL WARNING SWITCH
(a) Remove the reservoir tank cap and retainer.
(b) Disconnect the connector.
(c) Check that the continuity exists between the terminal.
(d) Use syphon, etc., to take fluid out of the reservoir tank.
(e) Check that the continuity exists between terminals.
(f) Pour the fluid back in the reservoir tank.
11. INSPECT OPEN DOOR WARNING LIGHT
(a) DIsconnect the connector from the driver door courtesy
switch and ground terminal on the wire harness side con-
nector.
(b) Turn the ignition switch ON and check that the warning
light lights up.

I24949
12 1
11 Connector C15 Connector C14
I24950
12 1
9
10Connector C15
I04107
12
4
OFF
ON
I04108
Wire Harness Side: BE-68
- BODY ELECTRICALCOMBINATION METER
2441 Author
: Date
:
12. INSPECT SEAT BELT WARNING BUZZER
(a) Disconnect the connector from the combination meter.
(b) Connect the positive (+) lead from the battery terminal 12
and negative (-) lead terminal 1.
(c) Check that the buzzer stop after 4 to 8 seconds.
(d) Check that the buzzer stops when connecting the termi-
nal 11 to the GND.
13. INSPECT KEY UNLOCK WARNING BUZZER
(a) Disconnect the connector from the combination meter.
(b) Connect the positive (+) lead from the battery terminal 12
and negative (-) lead terminal 1.
(c) Connect the negative (-) lead from battery terminal 9 and
10, check that the buzzer sound.
14. INSPECT SEAT BELT WARNING LIGHT
(a) DIsconnect the connector from the seat belt buckle switch
and ground terminal on the wire harness side connector.
(b) Turn the ignition switch ON and check that the warning
light lights up.
15. INSPECT SEAT BELT BUCKLE SWITCH CONTINUITY
Tester connectionBelt fastened
(Belt unfastened)
Seat belt buckle SW (D)1 - 4ON (OFF)
Seat belt buckle SW (P)2 - 4OFF (ON)
If operation is not as specified, replace the switch.
16. INSPECT SEAT BELT BUCKLE SWITCH CIRCUIT
Disconnect the switch connector and inspect the connector on
wire harness side, as shown.

I04109
Press
Seat Lower Cushion
Sensing part
I24953
- BODY ELECTRICALCOMBINATION METER
BE-69
2442 Author
: Date
:
Tester connectionConditionSpecified condition
4 - GroundConstantContinuity
If continuity is not as specified, inspect the ground circuit.
17. Passenger seat only:
INSPECT SEAT BELT WARNING OCCUPANT DETEC-
TION SENSOR CONTINUITY
Check that continuity exists between the terminals 1 and 2
when pressing the sensing part of the lower seat cushion.
If operation is not as specified, replace the sensor.
18. INSPECT LIGHT CONTROL RHEOSTAT
(a) Turn the rheostat knob OFF, and check that there is no
continuity between terminal 5 and 4 (Rheostat knob
turned to fully counterclockwise).
(b) Gradually, turn the rheostat knob from the dark side to
bright side, and check that there is continuity between ter-
minal 5 and 4 (Rheostat knob turned to clockwise).
If operation is not as specified, replace the rheostat.

BE0HH-12
I24743
I10004
Brake Master Cylinder

Brake Fluid Level Warning Switch
Cowl Side J/B LH

GAUGE1 Fuse

ACC FuseSeat Belt Buckle Switch
Parking Brake Switch Light Control RheostatCombination Meter Assembly
Ignition Switch
Cowl Side J/B RH

GAUGE2 Fuse

METER Fuse

DOME Fuse

ECU-B2 Fuse
BE-56
- BODY ELECTRICALCOMBINATION METER
2429 Author
: Date
:
2004 LAND CRUISER (RM1071U)
COMBINATION METER
LOCATION

BE0RO-03
I01256
1 2 3 4
5 6 7 8 LOCKACC
ON
START
I06372
N20125
1 2 OFF
ON
- BODY ELECTRICALIGNITION SWITCH AND KEY UNLOCK WARNING
SWITCHBE-29
2402 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. INSPECT IGNITION SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
LOCK-No continuity
ACC2 - 3Continuity
ON2 - 3 - 4
6 - 7Continuity
START1 - 2 - 4
6 - 7 - 8Continuity
If continuity is not as specified, replace the switch.
2. INSPECT IGNITION KEY ILLUMINATION OPERATION
Connect the positive (+) lead from the battery to terminal 1 and
the negative (-) lead to terminal 2, and check that the indicator
light lights up.
If operation is not as specified, replace the switch.
3. INSPECT KEY UNLOCK WARNING SWITCH CONTI-
NUITY
Switch positionTester connectionSpecified condition
OFF (Key removed)-No continuity
ON (Key set)1 - 2Continuity
If continuity is not as specified, replace the switch.
Connect the switch connector and inspect the connector on
wire harness side from the back side, as shown.

BE01J-17
BE-2
- BODY ELECTRICALTROUBLESHOOTING
2375 Author
: Date
:
2004 LAND CRUISER (RM1071U)
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
IGNITION SWITCH AND KEY UNLOCK WARNING SWITCH:
This system uses the body control system, so check the body control system before you proceed with trou-
bleshooting (See page DI-1038).
SymptomSuspect AreaSee page
Ignition switch is not set to each position.4. Ignition switch
5. Power source circuitBE-29
-
Ignition key illumination does not light up.
1. Bulb
2. Body ECU
3. Wire Hauness-
DI-1038
-
Key unlock warning system does not operate.
(The buzzer does not sound when the driver's door is opened with
the ignition OFF and key inserted)1. Key Unlock Warning Switch
2. Door Courtesy Switch
3. Wire HarnessBE-29
BE-44
-
Key unlock warning system does not operate.
(The buzzer sounds when the ignition key is in ACC or ON)1. Ignition Switch
2. Wire HarnessBE-29
-
HEADLIGHT AND TAILLIGHT SYSTEM:
This system uses the body control system, so check the body control system before you proceed with trou-
bleshooting (See page DI-1038).
SymptomSuspect AreaSee page
ºAutomatic light control systemº does not operate.
1. Automatic Light Control Sensor
2. Light Control Switch
3. Door Courtesy Switch
4. Wire HarnessBE-32
BE-32
BE-44
-
Auto turn-off system does not operate when the driver's door is
opened.1. Drivers Door Courtesy SwitchBE-44
Auto turn-off system:
Headlight and taillight do not come on.1. Body ECU
2. Wire HarnessDI-1038
-
Auto turn-off system:
Headlight and taillight stay on.1. Body ECU
2. Wire HarnessDI-1038
-
Only one headlight comes on.
1. Daytime Running Light No.3, 4 Relays
2. Body ECU
3. Bulb
4. Wire HarnessBE-32
BE-32
-
-
ºLO-beamº does not light (All).1. Engine Room J/B Relay Circuit
2. Wire HarnessBE-15
-
ºLO-beamº does not light (One side).
1. Bulb
2. H-LP L-LWR Fuse
3. H-LP R-LWR Fuse
4. Wire Harness-
-
-
-
ºHI-beamº does not light (All).
1. Headlight Dimmer Switch
2. Body ECU
3. Wire HarnessBE-32
BE-32
-
ºHI-beamº does not light (One side).
1. Bulb
2. H-LP L-UPR Fuse
3. H-LP R-UPR Fuse
4. Daytime Running Light No.3, 4 Relays
5. Wire Harness-
-
-
BE-32
-
ºFlashº does not light.
1. Headlight Dimmer Switch
2. Body ECU
3. Wire HarnessBE-32
BE-32
-

- BODY ELECTRICALTROUBLESHOOTING
BE-3
2376 Author
: Date
:
2004 LAND CRUISER (RM1071U) Headlight does not come on.
1. Engine Room J/B Relay Circuit
2. Body ECU
3. Daytime Running Light No.3, 4 Relays
4. Headlight Dimmer Switch
5. Light Control Switch
6. Wire Harness
7. BulbBE-15
BE-32
BE-32
BE-32
BE-32
-
-
Headlight does not come on with light control switch in HEAD.1. Light Control Switch
2. Wire HarnessBE-32
-
Headlight does not go out with light control switch in OFF.1. Engine Room J/B Relay Circuit
2. Wire HarnessBE-15
-
Headlight flickers.1. Bulb
2. Wire Harness-
-
Headlight is dark.1. Bulb
2. Wire Harness-
-
Taillight does not come on with light control switch in TAIL.
1. Engine Room J/B Relay Circuit
2. Light Control Switch
3. Wire HarnessBE-15
BE-32
-
Taillight does not go out with light control switch in OFF.
1. Engine Room J/B Relay Circuit
2. Light Control Switch
3. Wire HarnessBE-15
BE-32
-
Headlight does not come on with engine running and light control
switch in OFF.
1. ECU-B1 Fuse
2. ECU-IG1 Fuse
3. Body ECU
4. Daytime Running Light No.3, 4 Relays
5. Generator L Terminal
6. Parking Brake Switch
7. Wire Harness-
-
BE-32
BE-32
CH-10
BE-63
-
FOG LIGHT SYSTEM:
SymptomSuspect AreaSee page
Fog light does not light up with light control SW HEAD
(Headlight is normal.)
1. FOG Fuse
2. Engine Room J/B Relay Circuit
3. Fog Light Switch
4. Wire Harness-
BE-15
BE-37
-
Fog light does not light up with light control SW HEAD
(Headlight does not light).1.*1 Other Parts
2. Wire Harness-
-
Only one light does not light up.1. Bulb
2. Wire Harness-
-
*1: Inspect Headlight System
TURN SIGNAL AND HAZARD WARNING SYSTEM:
SymptomSuspect AreaSee page
ºHazardº and ºTurnº do not light up.
1. ECU-IG2 Fuse
2. TURN HAZ Fuse
3. Ignitioin Switch
4. Turn Signal Flasher Relay
5. Wire Harness-
-
BE-29
BE-40
-
Hazard warning light does not light up.
(Turn is normal)1. Hazard Warning Switch
2. Wire HarnessBE-40
-
Turn signal does not light up.
(Hazard is normal)1. Turn Signal Switch
2. Wire HarnessBE-40
-