AM1 TOYOTA LAND CRUISER 1996 J80 User Guide

W02195
ECU−IG
Ignition Switch
GNDABS ECU
B−W
J6
Junction
Connector
W
B−L
6
EA2
AM1
IE
3 4
Deceleration
Sensor
2
2
2
2 2
2
2
A13
A13 A13
Battery
AM1
GND
B−W
B−Y
B
B
BB
B
BR BR
BR
F6 1
1
13
+B
12
15
4 R/B No. 2
R/B No. 2
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−215
1996 LAND CRUISER (RM451U)
DTC 41 IG Power Source Circuit
CIRCUIT DESCRIPTION
This is the power source for the ECU, hence the CPU and actuators.
DTC No.DTC Detecting ConditionTrouble Area
41
Vehicle speed is 3 km/h (1.9 mph) or more and voltage of
ECU terminal IG1 remains at more than 17 V or below 9.5
V for more than 10 sec.Battery
 IC regulator
 Open or short in power source circuit
Fail safe function:
If trouble occurs in the power source circuit, the ECU cuts off current to the ABS control (solenoid) relay and
prohibits ABS control.
WIRING DIAGRAM
DI5M4−02
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W02197
Ignition
Switch
Battery
AM1
F61
B−L 2 2
3
4
W
2 12
AM1R/B No. 2
2
BB
EA2
6
B−Y
42
GAUGEY A
A
J1
Junction
Connector
CENTER DIFF. LOCK
Indicator Light Y
C10
P−B
P−B
P−B
C11
5
A1319
EXI
CENTER
DIFF. LOCK
DETECTION
Switch ABS ECU
2
1
3
R/B No. 2
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−221
1996 LAND CRUISER (RM451U)
DTC 48 Center Differential Lock Circuit
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
48Open or short circuit in center differential lock circuit
Center differential is lockingCenter differential lock
 Center differential lock circuit
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check the center differential is free (Transfer is in H position).
NG Repair the center differential lock system.
OK
DI5M9−02
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W02192
22 1
4
ABS
R/B
No. 2
W
B−R
W−B
ID
1 1
1
2
2
2
3
64
4 3
6
3
511
18
G
G−B
G−Y
DLC1 ABS ECU
MR
R−
SR
AST MT
L−Y
L−W
ABS Actuator ABS Control Relay
Motor
Relay
Solenoid
Relay
ABS ECU
A6A4
A13A5
F6
Battery
B−L
2
2
12 B−W
B−W
B−W
EA312
5
A5
A4
A4 A6
A6
A6
A7
A7
A7 A7A13 A13
A13 A13
24
23
B−L
EA312 V 12 V
B−W
AM1
W−B W−B
R/B
No. 2 B−W
DI−224
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
DTC 51 ABS Pump Motor Lock
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
51Pump motor is not operating normally during initial checkABS pump motor
Fail safe function:
If trouble occurs in the ABS pump motor, the ECU cuts off current to the ABS control (solenoid) relay and
prohibits ABS control.
WIRING DIAGRAM
DI5MB−02
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Version 1.11 - 03/16/2010

W02195
ECU−IG
Ignition Switch
GNDABS ECU
B−W
J6
Junction
Connector
W
B−L
6
EA2
AM1
IE
3 4
Deceleration
Sensor
2
2
2
2 2
2
2
A13
A13 A13
Battery
AM1
GND
B−W
B−Y
B
B
BB
B
BR BR
BR
F6 1
1
13
+B
12
15
4 R/B No. 2
R/B No. 2
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−225
1996 LAND CRUISER (RM451U)
DTC Always ON Malfunction in ECU
IG Power Source Circuit
CIRCUIT DESCRIPTION
This is the power source for the ECU, hence the CPU, and the actuator.
DTC No.DTC Detecting ConditionTrouble Area
Alway ONVoltage of ECU terminal +B remains at more than 17 V or
below 9.5 V
Battery
 IC regulator
 Open or short in power source circuit
 ECU
Fail safe function:
If trouble occurs in the power source circuit, the ECU cuts off current to the ABS control (solenoid) relay and
prohibits ABS control.
WIRING DIAGRAM
DI5ME−03
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Version 1.11 - 03/16/2010

R13678
Airbag Sensor
Assembly
Battery F/B
R/B No.2
2
2
1
1
36 4
6 10
9
S4
GR
B
W
L−R
B−L
B−R ACC
IG2
A
IGN
AM1
AM2
FL BLOCK
W−R
B−L
W−R
Ignition
Switch
B
EA2
EA2
4
11 3
CIG
J3 Junction
Connector
GR 4
33
S5 S5
S4
A
2 2
50A AM1
2
2
Short ConnectorGR
B−W
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
DI−271
1996 LAND CRUISER (RM451U)
DTC Normal Source Voltage Drop
CIRCUIT DESCRIPTION
The SRS is equipped with a voltage −increase circuit (DC−DC converter) in the airbag sensor assembly in
case the source voltage drops.
When the battery voltage drops, the voltage −increase circuit (DC−DC converter) functions to increase the
voltage of the SRS to normal voltage.
The diagnosis system malfunction display for this circuit is different to other circuits −when the SRS warning
light remains lit up and the DTC is a normal code, source voltage drop is ind\
icated.
Malfunction in this circuit is not recorded in the airbag sensor assembly, and the source voltage returns to
normal, the SRS warning light automatically goes off.
DTC No.DTC Detection ConditionTrouble Area
NormalSource voltage dorp Battery
 Airbag sensor assembly
WIRING DIAGRAM
DI5QC−03
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I00491
Cruise Control ECU
C17
Speedometer
(Combination Meter)
C13
C13
4 3
Vehicle Speed Sensor (Combination Meter) R−O
R−O
R−G
R−G 25
1
Ea1EC1
IH1L−W
BR Air Intake Chamber
EC
V1
V1
V13 2
1
1
Ea1 EC1
3 6
Y
Y GAUGE
AM1
Y
Y
BR
BR
EC1
Ea1 IH1
22
Instrument Panel Fuse
Block
Fusible Link BatteryWB
B
I12
I12
Ignition Switch 2
4
1
3
F11
F11Y
B
B
J4
JUNCTION
CONNECTOR
EA1
6
2
2 3
4
B−L
FL MAIN
F6
1 B−Y
39
20
SPD
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
DI−307
1996 LAND CRUISER (RM451U)
WIRING DIAGRAM
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I00495
Cruise Control ECUD
2
Y Y
B
B 4
Instrument Panel Fuse Block B−O
IH1
1 3
6
B−O
GAUGE
9
2 4
Ignition Switch C17
B−Y FL AM1 AM1
EA2 2
1
B
B 6
Battery 2
1 W
2 2
B−L
A/T Indicator Light
(Park/Neutral Position Switch)
IH24
P1
P1
F11 F11 J4
JUNCTION
CONNECTOR
I12 I12 Fusible Link
F6 2
D
Fusible Link
Y
DI−322
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
1996 LAND CRUISER (RM451U)
Park/Neutral Position Switch Circuit
CIRCUIT DESCRIPTION
When the shift position is put in except D position, a signal is sent from t\
he park/neutral position switch to
the ECU. When this signal is input during cruise control driving, the EC\
U cancels the cruise control.
WIRING DIAGRAM
DI5OL−02
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Version 1.11 - 03/16/2010

I00496
Cruise Control ECU
Fusible Link Fusible Link
Battery BR
BR
Instrument
Panel Fuse Block
ECU−IG
Ignition Switch BB
2
4 3
2
F6
1 JUNCTION
CONNECTOR J6
C17
C17B−W
I12
I12 4
2
2
2
2 B−W
F11
F11
B
B−Y
B
6EA2B
GND
13
14
AM1
FL AM1
1
ID
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
DI−325
1996 LAND CRUISER (RM451U)
ECU Power Source Circuit
CIRCUIT DESCRIPTION
The ECU power source supplies power to the actuator and sensors, etc.. When\
terminal GND and the cruise
control ECU case are grounded.
WIRING DIAGRAM
DI5OM−02
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Version 1.11 - 03/16/2010

I00498
Cruise Control ECU
C17
Battery Fusible
Link
F6 B−L W
B
B G−Y
F11 F11
GAUGE
Y
2
Y9
CRUISE MAIN Indicator (Combination Meter)C10
C10
2 2 2
2
22
43
EA2
6
Ignition Switch
I12 I12
4
Instrument Panel Fuse Block
1
AM1
AM1 J1
JUNCTION
CONNECTOR
PI
7
DI−332
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
1996 LAND CRUISER (RM451U)
CRUISE MAIN Indicator Light Circuit
CIRCUIT DESCRIPTION
When the cruise control main switch is turned ON, CRUISE MAIN indicator ligh\
t lights up.
WIRING DIAGRAM
DI5OP−02
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Brought to you by BirfMark
Version 1.11 - 03/16/2010