1996 TOYOTA LAND CRUISER BAT

Q08234
D00096
ONHOLD
HI
DI-187
-
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
3 Check 2nd start switch.
PREPARATION:
Disconnect the pattern select switch connector.
CHECK:
Check continuity between terminals 2 and 5 of pattern select
switch connector when pattern select switch is set to 2nd start
switch ON and OFF.
OK:
2nd start switchSpecified condition
Press continuously º2ndº switch0 W (Continuity)
Release º2ndº switch8 W (open)
NG Replace pattern select switch.
OK
4 Check voltage between terminals HOLD and HI of ECM and body ground.
PREPARATION:
(a) Turn ignition switch ON.
(b) Disconnect the connector of ECM.
CHECK:
Check voltage between terminal HOLD of ECM and body
ground when the select switch is set to 2nd start switch ON and
OFF.
OK:
2nd start switchVoltage
ON9 - 14 V
OFFBelow 1.5 V
CHECK:
Check voltage between terminal HI of ECM and body ground.
OK:
Voltage: 7.5 - 14 V
OK Check and replace the ECM.
NG
Check and replace harness and connector between battery and patten select swi\
tch, pattern se-
lect switch and ECM, battery and 2nd start indicator light , 2nd start indic\
ator light and ECM
(See page IN-27 ).
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DI5LW−03
DI−196
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
DIAGNOSTIC TROUBLE CODE CHART
NOTICE:
When removing the part, turn the ignition switch OFF.
HINT:
Using SST 09843 −18020, connect the terminals Tc and E1, and remove the short pin.
If any abnormality is not found when inspection parts, inspect the ECU.
If a malfunction code is displayed during the DTC check, check the circu\
it listed that the code. For details
of each code, turn to the page referred to under the ”See page” for respective ”DTC N\
o.” in the DTC chart.
DTC No.
(See page)Detection Item Trouble Area
11
( DI−201 )Open circuit in ABS control (solenoid) relay circuitABS control (solenoid) relay
 Open or short in ABS control (solenoid) relay circuit
12
( DI−201 )Short circuit in ABS control (solenoid) relay circuitABS control (solenoid) relay
 B+ short in ABS control (solenoid) relay circuit
13
( DI−204 )Open circuit in ABS control (motor) relay circuitABS control (motor) relay
 Open or short in ABS control (motor) relay circuit
14
( DI−204 )Short circuit in ABS control (motor) relay circuitABS control (motor) relay
 B+ short in ABS control (motor) relay circuit
21
( DI−207 )Open or short circuit in 3 −position solenoid circuit for right front
wheel ABS actuator
 Open or short in SFR circuit
22
( DI−207 )Open or short circuit in 3− position solenoid circuit for left front
wheel ABS actuator
 Open or short in SFLcircuit
23
( DI−207 )Open or short circuit in 3− position solenoid circuit for rear
wheel ABS actuator
 Open or short in SRR circuit
31
( DI−210 )Right front wheel speed sensor signal malfunction
Right front, left front, right rear and left rear speed sensor
 Open or short in each speed sensor circuit
 Senser rotor32
( DI−210 )Left front wheel speed sensor signal malfunction
33
( DI−210 )Right rear wheel speed sensor signal malfunction
34
( DI−210 )Left rear wheel speed sensor signal malfunction
35
( DI−210 )Open circuit in left front or right rear speed sensor circuitOpen in left front or right rear speed sensor circuit
36
( DI−210 )Open circuit in right front or left rear speed sensor circuitOpen in right front or left rear speed sensor circuit
41
( DI−215 )Low battery positive voltage or abnormally high battery
positive voltageBattery
 IC regulator
 Open or short in power source circuit
43
( DI−218 )Malfunction in deceleration sensorDeceleration sensor
 Wire harness for deceleration sensor circuit
44
( DI−219 )Open or short in deceleration sensor circuitDeceleration sensor
 Open or short in deceleration sensor circuit
48
( DI−221 )Open or short circuit in center differential lock circuit
Center differential is lockingCenter differential lock
 Center differential lock circuit
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−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−197
1996 LAND CRUISER (RM451U)51
( DI−224 )
Pump motor is locked
Open in pump motor groundABS pump motor
Always ON
(DI−225 )Malfunction in ECU
IG power source circuit
Battery
 IC regulator
 Open or short in power source circuit
 ECU
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DI5M0−02
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
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−201
1996 LAND CRUISER (RM451U)
CIRCUIT INSPECTION
DTC 11, 12 ABS Control (Solenoid) Relay Circuit
CIRCUIT DESCRIPTION
This relay supplies power to each ABS solenoid. After the ignition switch is\
turned ON, if the initial check is
OK, the relay goes on.
DTC No.DTC Detecting ConditionTrouble Area
11
Conditions (1) and (2) continue for 0.2 sec. or more:
1. ABS control (solenoid) relay terminal (SR) voltage: Battery positive voltage
2. (2) ABS control (solenoid) relay monitor terminal (AST) voltage: 0 V
ABS control (solenoid) relay
 Open or short in ABS control (solenoid) relay circuit
12
Conditions 1 and 2 continue for 0.2 sec. or more:
1. ABS control (solenoid) relay terminal (SR) voltage:
0 V
2. ABS control (solenoid) relay monitor terminal (AST) volt- age: Battery positive voltage
ABS control (solenoid) relay
 B+ short in ABS control (solenoid) relay circuit
Fail safe function:
If trouble in the ABS control (solenoid) relay circuit, the ECU cuts off current to the ABS control (solenoid)
relay and prohibits ABS control.
WIRING DIAGRAM
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R14139
ContinuityOpen
Continuity
1
2
5
6
3
A6
A7
R14140
(−) (+)
Continuity
Open
36
51
2
A6 A7
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−203
1996 LAND CRUISER (RM451U)
3 Check ABS control (solenoid) relay.
CHECK:
Check the continuity between each terminal of the ABS control
(solenoid) relay.
OK:
Terminals A7 −1 and A6− 3Continuity
(Reference value aprox. 80 Ω)
Terminals A7 −5 and A7− 6Continuity
Terminals A7 −2 and A7− 5Open
CHECK:
(a) Apply battery positive voltage between terminals A7 −1
and A6−3.
(b) Check the continuity between each terminal of the ABS control (solenoid) relay.
OK:
Terminals A7 −5 and A7− 6Open
Terminals A7 −2 and A7− 5Continuity
NG Replace ABS control relay.
OK
4 Check for open and short in harness and connector between ABS control (\
sole- noid) relay and ABS ECU (See page IN−28).
NG Repair or replace harness or connector.
OK
If same code is still output after DTC is deleted, check contact condition of each connection.\
If
connections are normal, ECU may be defective.
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−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−207
1996 LAND CRUISER (RM451U)
DTC 21, 22, 23 ABS Actuator Solenoid Circuit
CIRCUIT DESCRIPTION
This solenoid goes on when signals are received from the ECU and controls the pressure acting on the wheel
cylinders thus controlling the braking force.
DTC No.DTC Detecting ConditionTrouble Area
21
Conditions 1 through 3 continue for 0.05 sec. or more:
1. ABS control (solenoid) relay terminal (SR) voltage:
Battery positive voltage
2. Voltage of ABS ECU terminal AST: Battery positive voltage
3. When power transistor of ECU is ON, voltage of terminal SFR is 0 V or battery positive voltage
ABS actuator
 Open or short in SFR circuit
22
Conditions 1 through 3 continue for 0.05 sec. or more:
1. ABS control (solenoid) relay terminal (SR) voltage:
Battery positive voltage
2. Voltage of ABS ECU terminal AST: Battery positive volt- age
3. When power transistor of ECU is ON, voltage of terminal SFL is 0 V or battery positive voltage
ABS actuator
 Open or short in SFL circuit
23
Conditions 1 through 3 continue for 0.05 sec. or more:
1. ABS control (solenoid) relay terminal (SR) voltage:
Battery positive voltage
2. Voltage of ABS ECU terminal AST: Battery positive voltage
3. When power transistor of ECU is ON, voltage of terminal SRR is 0 V or battery positive voltage
ABS actuator
 Open or short in SRR circuit
Fail safe function:
If trouble occurs in the actuator solenoid circuit, the ECU cuts off current to the ABS control (solenoid) relay
and prohibits ABS control.
DI5M2−02
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Version 1.11 - 03/16/2010

W02193
2
2 1
3
ABS
Battery
W
B−W
W−BID
1
W−B 1
1
W−B 2
2
3 5
4
6
3
4
DLC1
ABS Actuator ABS Control Relay
Motor
Relay
Solenoid
Relay
ABS ECULG
L−R ABS ECU
ABS ECU
3
4
1
1
13
26
SFR
SFL
SRR
A6
A4 A5
A13
A7A6
A6 A6
A4 A4
A5
A5
A13
A13
F6
EA3
L
B−W
B−W
2
2
2
2
EA31
A7 A7
A7
B−RBL
4
1
B−L
AM1
Monitor
R/B
No. 2
B−W
B−W
R/B
No. 2
F00026
1
3
LOCK
7
4
A5
A4
4
DI−208
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check ABS actuator solenoid.
PREPARATION:
Disconnect the 2 connectors from the ABS actuator.
CHECK:
Check the continuity between terminals A4 − 4 and A5−1, 3, 4
of the ABS actuator connector.
OK:
Continuity
HINT:
Resistance of each solenoid coil is 0.8 − 1.6 Ω
NG Replace ABS actuator.
OK
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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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Version 1.11 - 03/16/2010