1998 TOYOTA LAND CRUISER wiring

F02870
Master Cylinder
Pressure Sensor
(Shielded)ABS & BA & TRAC
& VSC ECU
MSS VCM
E2 22
VOUT10
3 21
23 VCC
PMC
GND M4
A41 B
WR
A4112 A41
A41 DI-570
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
763 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC C1246 / 46 Master Cylinder Pressure Sensor
Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1246 / 46
Either of the following 1., 2., 3., 4. or 5. is detected:
1. At a vehicle speed of 4 mph (7 km/h) or more, PMC ter-
minal voltage does not change by more than 0.005 V
once it exceeds 0.86 V continues for at least 30 secs.
2. Interference occurs to ECU terminal PMC 7 times or
more for 5 sec.
3. ECU terminal STP is OFF, and the condition that termi-
nal PMC voltage becomes more than 0.86 V or less than
0.3 V continues for 5 sec. or more.
4. The condition that ECU terminal IG1 voltage is 9.5 V to
17.0 V, and terminal VCM voltage other than the range
from 4.4 V to 5.6 V continues for 1.2 sec. or more.
5. The condition that ECU terminal VCM voltage is 4.4 V to
5.6 V, and terminal PMC voltage other than the range
from 0.14 V to 4.85 V continues for 1.2 sec. or more.

Master cylinder pressure sensor

Master cylinder pressure sensor circuit
WIRING DIAGRAM
DIC9R-01

F17777F18531
ABS & BA & TRAC
& VSC ECU
S5
Stop Light SW
F16
Fl Block
H11
High Mounted
Stop Light STOP
R12
Rear Combination
Light RHSTP A4210
G-W
2B 23
2K 35
2D 35
2D31
2C
B-G1
ALT
J/B No.21 G-W
21
G-R
BP38
G-W
BH22
G-W
21W-B
BH2 5
W-B
BP3
6 3 5 G-W
G-W
BQ23
G-W G-W
31W-B
W-B
BQ2 10
G-W
31
W-B
BJ BM
BJ BK 3 5 BL48
G-W
BD27 G-W
W-B
W-B
W-B
W-BW-B
W-B G-W
BatteryR13
Rear Combination
Light RHR10
Rear Combination
Light LH
R11
Rear Combination Light LH
G-WCowl Side J/B LH
G-WG-W
W-B
3BH2
(*2)
(*1)
*1: w/ Navigation System
*2: w/o Navigation System DI-574
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
767 Author
: Date
:
2004 LAND CRUISER (RM1071U)
WIRING DIAGRAM

F17712
ABS & BA & TRAC
& VSC Actuator
Engine Room R/B
FL Block
Cowl Side J/B LH
Battery ABS MTR2 Relay
ABS MTR1 RelayMTT A4127
MT+ A4128
MT- A4118
MR2
A442
R2+
A443
W-L
1
1C 1
1 1
2ABS No.2
3 41
2 1
1
1
1B-R
L
GR
Y-B A387
A385
A388
A383
L-R
R
A372
A371
A386
A401
W-BW-BW-B
W-B W-B
EE2A3
IF
GND GND2GND1BM1 BM2 MT- MT+MTT
B-GF152
MAIN
P
R
A41MR1 29 A41
R1+ 1
W-B 43
21ABS & BA & TRAC
& VSC ECU
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-577
770 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC C1251 / 51 Hydraulic Brake Booster Pump Motor
Malfunction
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1251 / 51
Either of the following 1. or 2. is detected:
1. After turning the ignition switch ON, the current of more
than 30 A flows to the motor for more than 1 sec.
2. After turning the ignition switch ON, less than 7 A
change in current is detected more than 3 times in a row
when the motor is ON.
Hydraulic brake booster pump motor
WIRING DIAGRAM
DIC9T-02

F17712
ABS & BA & TRAC
& VSC ECU ABS & BA & TRAC
& VSC Actuator
Engine Room R/B
FL Block
Cowl Side J/B LH
Battery ABS MTR2 Relay
ABS MTR1 RelayMTT A4127
MT+ A4128
MT- A4118
MR2
A442
R2+
A443
W-L
1
1C 1
1 1
2ABS No.2
3 41
2 1
1
1
1B-R
L
GR
Y-B A387
A385
A388
A383
L-R
R
A372
A371
A386
A401
W-BW-BW-B
W-B W-B
EE2A3
IF
GND GND2GND1BM1 BM2 MT- MT+MTT
B-GF152
MAIN
P
R
A41MR1 29 A41
R1+ 1
W-B 43
21 DI-580
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
773 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC C1252 / 52 Hydraulic Brake Booster Pump Motor
ON Time Abnormally Long
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1252 / 52After the ignition switch is turned ON, the power is supplied
to the pump motor for more than 5 minutes.
Hydraulic brake booster pump motor

Hydraulic brake booster pump motor circuit

Pressure switch (PH or PL)
WIRING DIAGRAM
DIC9U-02

F17712
ABS & BA & TRAC
& VSC ECU ABS & BA & TRAC
& VSC Actuator
Engine Room R/B
FL Block
Cowl Side J/B LH
Battery ABS MTR2 Relay
ABS MTR1 RelayMTT A4127
MT+ A4128
MT- A4118
MR2
A442
R2+
A443
W-L
1
1C 1
1 1
2ABS No.2
3 41
2 1
1
1
1B-R
L
GR
Y-B A387
A385
A388
A383
L-R
R
A372
A371
A386
A401
W-BW-BW-B
W-B W-B
EE2A3
IF
GND GND2GND1BM1 BM2 MT- MT+MTT
B-GF152
MAIN
P
R
A41MR1 29 A41
R1+ 1
W-B 43
21
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEMDI-587
780 Author
: Date
:
2004 LAND CRUISER (RM1071U)
WIRING DIAGRAM

F17713
ABS & BA & TRAC
& VSC ECU ABS & BA & TRAC
& VSC Actuator
Engine Room R/B
Cowl Side J/B LHFL Block
Battery ABS MTR2 Relay
ABS MTR1 RelayPH A4111
PL A449
MR2 A442 O
W
Y-B A373
A384 PH
PL
3
A38
BM2
2
A37
BM1
A375
PHG
1
A37 GND1
1
A40 GND
2
A38 PLG
6
A38 GND2
EE
IF L-R
R
W-B
W-B
W-B
W-B
W-B
W-BW-B
W-B
W-B W-B W-B
2A3 2B 13
F152A41 MR129 A41R1+ 1 A44 R2+3
1
1
1C
1 1
2ABS No.2
3 4 2
1 1
2 43 1
1
1
1B-G
MAIN RW-L
P DI-592
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
785 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC C1254 / 54 Pressure Switch Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1254 / 54
Either of the following 1. or 2. is detected:
1. After turning the ignition switch ON, short or open circuit
in pressure switch (PL) continued for more than 1 sec.
2. After turning the ignition switch ON, open in pressure
switch (PH) continued for more than 1 sec.

Pressure switch (PH or PL)

Pressure switch circuit
WIRING DIAGRAM
DIC9W-01

F17713
ABS & BA & TRAC
& VSC ECU ABS & BA & TRAC
& VSC Actuator
Engine Room R/B
Cowl Side J/B LHFL Block
Battery ABS MTR2 Relay
ABS MTR1 RelayPH A4111
PL A449
MR2 A442 O
W
Y-B A373
A384 PH
PL
3
A38
BM2
2
A37
BM1
A375
PHG
1
A37 GND1
1
A40 GND
2
A38 PLG
6
A38 GND2
EEIF L-R
R
W-B
W-B
W-B
W-B
W-B
W-BW-B
W-B
W-B W-B W-B
2A3 2B 13
F152A41 MR129 A41R1+ 1 A44 R2+3
1
1
1C
1 1
2ABS No.2
3 4 2
1 1
2 43 1
1
1
1B-G
MAIN RW-L
P DI-596
- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
789 Author
: Date
:
2004 LAND CRUISER (RM1071U)
WIRING DIAGRAM

F17758
Cowl Side J/B LH BatteryEngine Room J/B
Cowl Side J/B LH
Cowl Side J/B RH J4
J/C
Cowl Side J/B LH
IG1 No. 2 Relay
ECU-IG1
AM1
ALT
MAINFL Block
EE IFIG2
IG1
GND4
GND3
GND1
GND2 A44
A42
A42 A42
A41
A41 2A
2B3
13 J/B No. 2
IFF15 F16
2 12C1
2E 2E
2B
3918 37
12
533B 3E22 4IGN2A
2E41 10 1
1C 1B9 AM2
W-R
B-R B-R
B-R B-G
W-R
L-B
B-R
AA
B-G
W-B B-W
W-B
W-B 4
62
7 IG1
AM1
AM2 IG2
W-B
22
6
17
8
31
6 ABS & BA & TRAC
& VSC ECU
W-B
W-B
W-B
W-B
W-B I18
Ignition SW
DI-602- DIAGNOSTICSABS & VEHICLE STABILITY CONTROL (VSC) &
BRAKE ASSIST (BA) SYSTEM
795 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC C1257 / 57 Power Supply Drive Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1257 / 57When a malfunction inside ECU is detected.

Battery

Power source circuit

Skid control ECU
WIRING DIAGRAM
DIC9Y-01