1998 TOYOTA LAND CRUISER Wiring harness

BO4IY-01
H18916
- BODYINSTRUMENT PANEL
BO-89
2663 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DISASSEMBLY
1. REMOVE NO. 2 SIDE DEFROSTER NOZZLE DUCT
2. REMOVE NO. 1 SIDE DEFROSTER NOZZLE DUCT
3. REMOVE DEFROSTER NOZZLE
4. REMOVE CENTER BRACKET
5. REMOVE NO. 1 HEATER TO REGISTER DUCT
6. REMOVE INSTRUMENT PANEL WIRE HARNESS
7. REMOVE NO. 5 HEATER TO REGISTER DUCT
8. REMOVE FRONT PASSENGER AIRBAG ASSEMBLY
Remove the 3 nuts and the front passenger airbag assembly.
Torque: 6.0 N´m (61 kgf´cm, 53 in.´lbf)
CAUTION:

Do not store the front passenger airbag assembly
with the airbag deployment side facing down.

Never disassemble the front passenger airbag as-
sembly.
NOTICE:
At the time of reassembly, please refer to the following
items.

Make sure that the front passenger airbag assembly
is installed with the specified torque.

If the front passenger airbag assembly has been
dropped, or if there are cracks, dents or other defects
in the case or the connector, replace the front passen-
ger airbag assembly with a new one.

When installing the front passenger airbag assembly,
take care that the wiring does not interfere with other
parts and is not pinched between other parts.
9. REMOVE NO. 1 REGISTER
10. REMOVE NO. 4 REGISTER

BO21G-03
H05264
Claw
H05265
: 4 Clips
- BODYSEAT BELT PRETENSIONER
BO-141
2715 Author
: Date
:
2004 LAND CRUISER (RM1071U)
SEAT BELT PRETENSIONER
REMOVAL
NOTICE:

If the wiring connector of the seat belt pretensioner
is disconnected with the ignition switch at ON or ACC,
diagnostic trouble codes will be recorded.

Never use seat belt pretensioner from another ve-
hicle. When replacing seat belt pretensioner, replace
it with a new one.
1. REMOVE FRONT DOOR SCUFF PLATE
2. REMOVE FRONT DOOR OPENING TRIM
3. REMOVE REAR DOOR SCUFF PLATE
4. REMOVE REAR DOOR OPENING TRIM
5. REMOVE CENTER PILLAR LOWER GARNISH
(a) Using a screwdriver, remove the center pillar garnish cov-
er.
HINT:
Tape the screwdriver tip before use.
(b) Using a screwdriver, remove the center pillar lower gar-
nish as shown in the illustration.
HINT:
Tape the screwdriver tip before use.
6. REMOVE FRONT SEAT OUTER BELT SHOULDER AN-
CHOR
7. REMOVE FRONT SEAT OUTER BELT FLOOR AN-
CHOR
8. REMOVE RETRACTOR OF FRONT SEAT OUTER
BELT
CAUTION:
Never disassemble the retractor of front seat outer belt.
NOTICE:
When removing the retractor of front seat outer belt, take
care not to pull the seat belt pretensioner wire harness.

F17754
ABS & BA & TRAC
& VSC ECU
ECM
J/B No.5
NEO A427
W
5D 12
5
5C E9W
NEO17
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-541
734 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC C1224 / 44 NE Signal Circuit
CIRCUIT DESCRIPTION
The skid control ECU receives engine revolution speed signals (NE signals) from the ECM.
DTC No.DTC Detecting ConditionTrouble Area
C1224 / 44
When either of the following 1. or 2. is detected:
1. At vehicle speed of 19 mph (30 km/h) or more, and
when data received from the ECM is in normal condition,
and open or short circuit for engine revolution signal
circuit continues for 10 sec. or more.
2. While TRAC is operating, the conditions that open or
short circuit in engine revolution signal circuit is de-
tected, main throttle opening degree is 0 and IDL switch
is OFF continue for 0.24 sec. or more.

NEO circuit

ECM

Skid control ECU
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check for open and short circuit in harness and connector between terminal
NEO of skid control ECU and terminal NEO of ECM (See page
IN-36).
NG Repair or replace harness and connector.
OK
DIC9G-01

F02836
GND1
GND2GND3
GND4
F04448
Driver Side J/B
ECU-IG
DI-560- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
753 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3 Check continuity between terminal GND of skid control ECU connector and body
ground.
CHECK:
Measure resistance between terminal GND of the skid control
ECU connector and body ground.
OK:
Resistance: 1 W or less
NG Repair or replace harness or connector.
OK
4 Check ECU-IG fuse.
PREPARATION:
Remove the ECU-IG fuse from the driver side J/B.
CHECK:
Check continuity of the ECU-IG fuse.
OK:
Continuity
NG Check for short circuit in all the harness and
components connected to ECU-IG fuse (See at-
tached wiring diagram).
OK
Check for open circuit in harness and connector between skid control ECU and battery (See page
IN-36).

F17752
ABS & BA & TRAC
& VSC ECU Y1
Yaw Rate Sensor
ShieldedGL1
GL2
YD
VYS
YAW
GYAW
YSS A43
1827 289 191022
G
Y
L
B
W
R 4
2
6
8
1
5A43
A43
A43
A43
A43
A42 IG4
IG4
IG4
IG4
IG4
IG4
IG416
17
21
19
20
18
22
ShieldedG
Y
L
B
W
R GL1
GL2
YD
VYS
YAW 2
GYAW DI-564
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
757 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTCC1243 / 43, C1245 / 45Malfunction in Deceleration Sensor
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1243 / 43
While vehicle speed becomes 0 mph (0 km/h) from 30 km/h
(18 mph), and the condition that GL1 and GL2 signals of ECU
terminals did not change 40 mV or less continued in a
sequence 16 times.
Deceleration sensor
C1245 / 45
At the vehicle speed of 18 mph (30 km/h) or more, and the
condition that the difference between acceleration and decel-
eration values of computation from deceleration sensor and
vehicle speed becomes more than 0.35 G continues for 60
sec. or more.
Deceleration sensor

Wire harness for deceleration sensor system
WIRING DIAGRAM
DIC9P-01

F02836
GND1
GND2GND3
GND4
F04448
Driver Side J/B
ECU-IG
DI-604- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
797 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3 Check continuity between terminal GND of skid control ECU connector and body
ground.
CHECK:
Measure resistance between terminal GND of the skid control
ECU connector and body ground.
OK:
Resistance: 1 W or less
NG Repair or replace harness or connector.
OK
4 Check ECU-IG fuse.
PREPARATION:
Remove the ECU-IG fuse from the driver side J/B.
CHECK:
Check continuity of the ECU-IG fuse.
OK:
Continuity
NG Check for short circuit in all the harness and
components connected to ECU-IG fuse (See at-
tached wiring diagram).
OK
Check for open circuit in harness and connector between skid control ECU and battery (See page
IN-36).

A21371
Battery1BB-R
E9ECM
BATT 13
IG1 1
Id15
F15
FL Block 2Engine Room J/B
MAIN
B-G
1CEFI or ECD No. 1
3
B-R B-R
A19976
Engine Room J/B
EFI or ECD No. 1 Fuse
- DIAGNOSTICSENGINE
DI-291
484 Author
: Date
:
2004 LAND CRUISER (RM1071U)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help deter-
mine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean
or rich, as well as other data from the time when a malfunction occurred.
1 Check EFI or ECD No. 1 fuse of engine room J/B.
PREPARATION:
Remove the EFI or ECD No. 1 fuse from the engine room J/B.
CHECK:
Check the continuity of the EFI or ECD No. 1 fuse.
OK:
Continuity
NG Check for short in all harness and components
connected to EFI or ECD No. 1 fuse.
OK

DIB5X-02
I27347
U1
Unlock Warning SWCowl Side J/B RH
KSW 3E25
R-B
R-B10
3E23
3P3
3P1
3P2
3P1
W-B W-B
W-B
2E 18
IF Set Bolt of Cowl Side J/B LH21W-BGND 14 T19
Transponder Key ECU DI-1014
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1207 Author
: Date
:
2004 LAND CRUISER (RM1071U)
CIRCUIT INSPECTION
DTC B2780 Key Unlock Warning Switch Malfunction
CIRCUIT DESCRIPTION
This DTC is detected when the Transponder key ECU does not detect the key unlock warning switch ON
even with the ignition switch ON. (In normal condition, the key unlock warning switch should be ON when
the ignition switch is ON.)
DTC No.DTC Detecting ConditionTrouble Area
B2780The key unlock warning switch On is not detected when the
ignition switch is ON.
Key unlock warning switch

Wire harness
WIRING DIAGRAM