1986 TOYOTA LAND CRUISER ECU

I24922
Cowl Side J/B LH
ABCD
Relays:
A. DEFOG
B. IG1 No.2
C. ACC
D. DOME Fuses:
1. AHC-IG
2. POWER HTR
3. FUEL HTR
4. AHC-B
5. DEFOG
6. AM1
7. ACC
8. CIG
9. PWR OUTLET
10. OBD-2
11. STOP
12. A/C
13. BATT CHARGE
14. DBL LOCK
15. ECU-B1
16. ECU-IG1
17. GAUGE1
18. EFI or ECD NO.2
19. RR WIPER
20. SUN ROOF
21. DOOR
22. LH SEAT
23. IDLE UP
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21 22 23
- BODY ELECTRICALPOWER SOURCE
BE-13
2386 Author
: Date
:
2004 LAND CRUISER (RM1071U)

I24923
Cowl Side J/B RH
Relays:
A. ACC CUT
B. IG1 NO.3
C. POWER MAIN Fuses:
1. P/W (RL)
2. P/W (FL)
3. VGRS
4. DOME
5. RADIO
6. WASHER
7. DIFF
8. ECU-B2
9. P/W(FR)
10.P/W(RR)
11. SECURITY
12. IGN
13. MET
14. GAUGE 2
15. SEAT HTR
16. ECU-IG2
17. WIPER
18. RH SEAT
19. RR A/C
20. TIL&TEL
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17
18 19 20 21 22
BA
BE-14
- BODY ELECTRICALPOWER SOURCE
2387 Author
: Date
:
2004 LAND CRUISER (RM1071U)

BE0S9-04
I06151
I04045
Wire Harness Side:
- BODY ELECTRICALSLIDING ROOF SYSTEM
BE-107
2480 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. INSPECT SLIDING ROOF SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
SLIDE OPEN3 - 5Continuity
SLIDE OFF -No continuity
SLIDE CLOSE3 - 4Continuity
TILT DOWN2 - 3Continuity
TILT OFF -No continuity
TILT UP1 - 3Continuity
If continuity is not as specified, replace the switch.
2. INSPECT SLIDING ROOF CONTROL ASSEMBLY CIR-
CUIT
Disconnect the connector from the ECU and inspect the con-
nector on the wire harness side, as shown in the chart.
Tester connectionConditionSpecified condition
1 - GroundConstantContinuity
4 - GroundSliding roof control switch (TILT) OFF or CLOSENo continuity
4 - GroundSliding roof control switch (TILT) UPContinuity
5 - GroundConstantBattery positive voltage
3 - GroundConstantContinuity
3 - GroundSliding roof control switch (TILT) OFF or UPNo continuity
7 - GroundSliding roof control switch (TILT) DOWNContinuity
8 - GroundIgnition switch LOCK or ACC* No voltage
8 - GroundIgnition switch ONBattery positive voltage
9 - GroundSliding roof control switch (SLIDE) OFF or
CLOSENo continuity
9 - GroundSliding roof control switch (SLIDE) OPENContinuity
10 - GroundSliding roof control switch (SLIDE) OFF or OPENNo continuity
10 - GroundSliding roof control switch (SLIDE) CLOSEContinuity
*: Exceptions: During 45 second period after ignition switch
ON"OFF (ACC) or until driver or passenger door is opened af-
ter ignition switch ON"OFF (ACC).

BE0S8-05
I24749
Sliding Roof Control Gear Assembly with ECU
Cowl SId e J/B LH

SUN ROOF Fuse

ECU-IG1 Fuse
Ignition SwitchSliding Roof Control Switch
BE-106
- BODY ELECTRICALSLIDING ROOF SYSTEM
2479 Author
: Date
:
2004 LAND CRUISER (RM1071U)
LOCATION

BE0O9-02
Sliding Roof reverses during close (down) operation.
Start
Mechanical check
Replace sliding roof motor with ECU. Perform forced operation.*
*: Holding the CLOSE/UP (OPEN/DOWN) switch pressed inhibits the jam protection function at approx.
10 sec. after starting the reverse operation.
If the switch remains pressed any longer, the sliding door starts close operation and it stops when
detecting the fully closed position.
CLOSE/UP
(OPEN/DOWN)
SWITCHON
OFF
Close
(Down)
Roof OperationStop Forced Operation Reverse
Stop
Close (Down)
Close Position Approx. 10 sec.
HINT:
At approx. 10 sec. after starting the reverse operation, it is switched to the forced close (down) operation.
- BODY ELECTRICALSLIDING ROOF SYSTEM
BE-105
2478 Author
: Date
:
2004 LAND CRUISER (RM1071U)
SLIDING ROOF SYSTEM
TROUBLESHOOTING

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
-

BE-4
- BODY ELECTRICALTROUBLESHOOTING
2377 Author
: Date
:
2004 LAND CRUISER (RM1071U) Turn signal does not light up in one direction.
1. Turn Signal Switch
2. Wire HarnessBE-40
-
Only one bulb does not light up.1. Bulb
2. Wire Harness-
-
INTERIOR LIGHT 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
All the lights do not come ON.
1. DOME Fuse
2. Body ECU
3. DOME Relay(Cowl Side J/B LH)-
DI-1038
-
The light does not come ON when the driver's door is opened.1. Driver's Door Courtesy Switch
2. Wire HarnessBE-44
-
The light does not come ON when the passenger's door is
opened.1. Passenger's Door Courtesy Switch
2. Wire HarnessBE-44
-
The light does not come on when the rear-right door is opened.1. Rear-Right Door Courtesy Switch
2. Wire HarnessBE-44
-
The light does not come on when the rear-left door is opened.1. Rear-Left Door Courtesy Switch
2. Wire HarnessBE-44
-
Only one of the bulbs comes ON.1. Bulb-
The illumination does not fade out when all the doors are closed.
1. Courtesy Switch
2. Wire Harness
3. Boby ECUBE-44
-
DI-1038
The illumination does not fade out immediately when the ignition
switch is turned to ACC or ON within 15 seconds after all the
doors are closed.
1. Ignition Switch
2. ACC Fuse
3. ECU-IG1 Fuse
4. Body ECU
5. Wire HarnessBE-29
-
-
DI-1038
-
The illumination does not fade out immediately when all the doors
are locked within 15 seconds after they are closed.1. Door Unlock Detection Switch
2. Wire HarnessBE-88
-
Room light does not light up.
1. Bulb
2. Room Light
3. Rear Personal Light
4. Wire Harness-
BE-44
BE-44
-
Front personal light does not light up.
1. Bulb
2. Front Personal Light
3. Room Light
4. Wire Harness-
BE-44
BE-44
-
Rear Room light does not light up.
1. Bulb
2. Rear Room Light
3. Wire Harness-
BE-44
-
Vanity light does not light up.
1. Bulb
2. Vanity Light
3. Wire Harness-
BE-44
-
Glove compartment light does not light up.
1. Bulb
2. Glove Compartment Courtesy Switch
3. Wire Harness-
BE-44
-
Courtesy light does not light up.
1. Bulb
2. Door Courtesy Switch
3. Wire Harness-
BE-44
-