1986 TOYOTA LAND CRUISER Fuel relay

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)

I25274
Cowl Side J/B LH (Back Side):
DOME Relay
ACC RelayIG1 No.2 Relay
DEFOG Relay
- BODY ELECTRICALPOWER SOURCE
BE-23
2396 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(a) Remove the fuse from the junction block and inspect the
connector on junction block side.
Fuse Tester connectionConditionSpecified condition
AHC-IG 2 - GroundIgnition switch ONBattery positive voltage
POWER HTR 4 - GroundIgnition switch ONBattery positive voltage
FUEL HTR 6 - GroundIgnition switch ONBattery positive voltage
AHC-B 8 - GroundConstantBattery positive voltage
DEFOG 10 - GroundConstantBattery positive voltage
AM1 12 - GroundConstantBattery positive voltage

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)

DI-350
- DIAGNOSTICSENGINE
543 Author
: Date
:
2004 LAND CRUISER (RM1071U)
Fuel Pump Control Circuit
CIRCUIT DESCRIPTION
Refer to DTC P0230 on page DI-162.
WIRING DIAGRAM
Refer to DTC P0230 on page DI-162.
INSPECTION PROCEDURE
Hand-held tester:
1 Check fuel pump operation (See page SF-7).
OK Go to step 8.
NG
2 Connect hand-held tester, and check operation of fuel pump relay.
PREPARATION:
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand-held tester main switch ON.
(c) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / FUEL PUMP / SPD.
CHECK:
Check the operation of the fuel pump relay when it is switched ON and OFF by the hand-held tester.
OK:
Operating noise can be heard from the relay.
OK Go to step 4.
NG
3 Check operation of fuel pump relay (See page SF-40).
NG Replace fuel pump relay.
OK
DIB2Y-02

- DIAGNOSTICSENGINE
DI-351
544 Author
: Date
:
2004 LAND CRUISER (RM1071U)
4 Check fuel pump (See page SF-7).
NG Repair or replace fuel pump.
OK
5 Check circuit opening relay (See page SF-39).
NG Replace circuit opening relay.
OK
6 Check for open in harness and connector between EFI or ECD relay and fuel
pump, and fuel pump and body ground (See page IN-36).
NG Repair or replace harness or connector.
OK

A19521A19629
FC(+)
ECM ConnectorE9
DI-352
- DIAGNOSTICSENGINE
545 Author
: Date
:
2004 LAND CRUISER (RM1071U)
7 Check voltage between terminal FC and E1 of ECM connector.
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminal FC of the ECM connec-
tor and body ground.
OK:
Voltage: 9 to 14 V
NG Check for open in harness and connector be-
tween battery and FC terminal of ECM (See page
IN-36).
OK
Proceed to problem symptoms table
(See page DI-48).
8 Check fuel pump resistor (See page SF-42).
NG Replace fuel pump resistor.
OK
Check for open in harness and connector between circuit opening relay and fuel pump resistor,
and fuel pump resistor and fuel pump (See page IN-36).

- DIAGNOSTICSENGINE
DI-353
546 Author
: Date
:
2004 LAND CRUISER (RM1071U)
OBD II scan tool (excluding hand-held tester):
1 Check operation of fuel pump (See page SF-7).
OK Go to step 7.
NG
2 Check operation of fuel pump relay (See page SF-40).
NG Replace fuel pump relay.
OK
3 Check fuel pump (See page SF-7).
NG Repair or replace fuel pump.
OK
4 Check circuit opening relay (See page SF-39).
NG Replace circuit opening relay.
OK
5 Check for open in harness and connector between EFI or ECD relay and fuel
pump, and fuel pump and body ground (See page IN-36).
NG Repair or replace harness or connector.
OK

A19521A19629
FC(+)
ECM ConnectorE9
DI-354
- DIAGNOSTICSENGINE
547 Author
: Date
:
2004 LAND CRUISER (RM1071U)
6 Check voltage between terminal FC of ECM connector and body ground.
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminal FC of the ECM connec-
tor and body ground.
OK:
Voltage: 9 to 14 V
NG Check for open in harness and connector be-
tween battery and FC terminal of ECM (See page
IN-36).
OK
Proceed to problem symptoms table
(See page DI-48).
7 Check fuel pump resistor (See page SF-42).
NG Replace fuel pump resistor.
OK
Check for open in harness and connector between circuit opening relay and fuel pump resistor,
fuel pump resistor and fuel pump (See page IN-36).