1996 TOYOTA LAND CRUISER ABS

BR1DK−01
−
BRAKE ABS ACTUATOR
BR−57
1996 LAND CRUISER (RM451U)
REMOVAL
1. REMOVE CONTROL RELAY FROM ACTUATOR
BRACKET
Torque: 13 N·m (130 kgf·cm, 9 ft·lbf)
2. DISCONNECT BRAKE LINES
Using SST, disconnect the brake lines from the ABS actuator. SST 09023−00100
Torque: 15 N·m (155 kgf·cm, 11 ft·lbf)
3. REMOVE ABS ACTUATOR ASSEMBLY
(a) Disconnect the 2 connectors from the actuator.
(b) Remove the 4 bolts and actuator assembly. Torque: 19 N·m (195 kgf·cm, 14 ft·lbf)
4. REMOVE ABS ACTUATOR
(a) Remove the 3 nuts and actuator from the actuator brack-
et.
Torque: 5.4 N·m (55 kgf·cm, 48 in.·lbf)
(b) Remove the 3 holders and cushions from the ABS actua-
tor.
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BR1NS−01
BR−58
−
BRAKE ABS ACTUATOR
1996 LAND CRUISER (RM451U)
INSPECTION
1. INSPECT CONTINUITY OF MOTOR RELAY CIRCUIT
(a) Check there is continuity between terminals 9 and 10.
(b) Check there is no continuity between terminals 7 and 8.
If continuity is not as specified, replace the relay.
2. INSPECT OPERATION OF MOTOR RELAY CIRCUIT
(a) Connect the positive (+) lead from the battery to terminal 10 and negative ( −) lead to terminal 9.
(b) Check there is continuity between terminals 7 and 8.
If operation is not as specified, replace the relay.
3. INSPECT CONTINUITY OD SOLENOID RELAY CIR- CUIT
(a) Check there is continuity between terminals 1 and 9.
(b) Check there is no continuity between terminals 2 and 5.
(c) Connect the positive lead from the ohmmeter to terminal 5 and connect negative lead to terminal 4.
(d) Check there is continuity between terminals.
(e) Connect the 2 leads in reverse, and check that there is no
continuity between terminals.
If continuity is not as specified, replace the relay.
HINT:
For the different type ohmmeter, there is no continuity for step
(d), and there is continuity for step (e).
4. INSPECT OPERATION OF SOLENOID RELAY CIR- CUIT
(a) Connect the positive (+) lead from the battery to terminal
1 and negative ( −) lead to terminal 9.
(b) Check there is continuity between terminal 2 and 6.
(c) Check there is no continuity between terminals 2 and 6.
If operation is not as specified, replace the relay.
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BR1DL−01
−
BRAKE ABS ACTUATOR
BR−59
1996 LAND CRUISER (RM451U)
INSTALLATION
Installation is in the reverse order of removal (See page BR−57 ).
HINT:
After installation, fill the brake reservoir with brake fluid, bleed bra\
ke system (see page BR−4) and check
for leaks.
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DI5LU−01
ABS Check SheetInspector ’sName :
Customer ’s Name Date Vehicle
Brought In Registration Year
Registration No.
Frame No.
Odometer Reading / /
/ /
Date Problem First Occurred
Frequency Problem Occurs / /
ContinuousIntermittent ( times a day)
ABS does not operate.
ABS does not operate efficiently.
ABS Warning Light
Abnormal
Remains ONDoes not Light Up
DTC Check1st Time
2nd Time Normal Code
Malfunction Code (Code )
Normal CodeMalfunction Code (Code )
Symptoms km
miles
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−189
1996 LAND CRUISER (RM451U)
CUSTOMER PROBLEM ANALYSIS CHECK
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R04751
DI5LV−02
F00006
DLC1Short Pin
F00007
DLC1
E1Tc
DI−190
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
PRE−CHECK
1. DIAGNOSIS SYSTEM
(a) Check the indicator.
When the ignition switch is turned ON, check that the ABS
warning light goes on for 3 seconds.
HINT:
If the indicator check result is not normal, proceed to trou-
bleshooting for the ABS warning light circuit (See page
DI−230 ).
When the transfer is in L position (center dif ferential lock),
the ABS does not operate and the ABS warning light
stays ON.
(b) Check the DTC. (1) Confirm that the center differential is free.
(2) Disconnect the short pin from the DLC1.
(3) Using SST, connect terminals Tc and E
1 of the
DLC1.
SST 09843−18020
(4) Turn the ignition switch ON.
(5) Read the DTC from the ABS warning light on the combination meter.
HINT:
If no code appears, inspect the diagnostic circuit or ABS
warning light circuit (See page DI−233 or DI−230 ).
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N09348
Interface BoxHarness VehicleTOYOTA
Tester
Hand
−held
TOYOTA Break −out− box
F00007
DLC1
Ts Tc
E
1
BR3904
0.25 sec. 0.25 sec.
ON
OFF
DI−192
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
(d) Using TOYOTA break −out− box and TOYOTA hand− held
tester, measure the ECU terminal values.
(1) Hook up the T OYOTA hand−held tester and TOYO-
TA break−out−box to the vehicle.
(2) Read the ECU input/output values by following the prompts on the tester screen.
HINT:
TOYOTA hand −held tester has a ”Snapshot ” function. This re-
cords the measured values and is effective in the diagnosis of
intermittent problems.
Please refer to the TOYOTA hand−held tester/TOYOTA break
out−box operators manual for further details.
2. SPEED SENSOR SIGNAL AND DECELERATION SEN-
SOR CHECK
(a) Check the speed sensor signal. (1) Conform that the center differential is free.
(2) Turn the ignition switch OFF.
(3) Using SST, connect terminals Ts and E
1 of the
DLC1.
SST 09843−18020
(4) Start the engine.
(5) Check that the ABS warning light blinks.
HINT:
If the ABS warning light does not blink, inspect the ABS warning
light circuit (See page DI−230).
(6) Drive vehicle straight forward.
HINT:
Drive vehicle faster than 45 km/h (28 mph) for several seconds.
(7) Stop the vehicle.
(8) Using SST, connect terminals Tc and E
1 of the
DLC1.
SST 09843−18020
(9) Read the number of blinks of the ABS warning light.
HINT:
See the list of DTC on page DI−190 .
If every sensor is normal, a normal code is output (A cycle of
0.25 sec. ON and 0.25 sec. OFF is repeated).
If 2 or more malfunction are indicated at the same time, the low-
est numbered code will be displayed 1st.
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BR3893
Malfunction Code (Example Code 72, 76)
72 6
7
ON
OFF
0.5 sec.
0.5 sec.
0.5 sec.
0.5 sec. 1.5 sec.
2.5 sec. 4 sec.
Repeat
F00007
E1
Ts
DLC1
R05599
0.13 sec.
0.13 sec.
3 sec.
ON
OFF
R05037
860 
30 mm
33.86  1.18 in.
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−193
1996 LAND CRUISER (RM451U)
(10) After doing the check, disconnect terminals Ts and
E
1, Tc and E1 of the DLC1, and turn the ignition
switch OFF.
(b) Deceleration sensor detection point check. (1) Confirm that the center differential is free.
(2) Turn the ignition switch OFF.
(3) Using SST, connect terminals Ts and E
1 of the
DLC1.
SST 09843−18020
(4) Start the engine.
(5) Check that the ABS warning light blinks.
HINT:
If the ABS warning light does not blink, inspect the ABS warning
light circuit (See page DI−230).
(6) Jack up the rear side of the vehicle slowly.
HINT:
When measuring the height, measure at the center of the lower
body of the vehicle. (7) Check that the warning light blinks.
If the warning light turns on, inspect the deceleration sensor
installation. If the sensor installation is OK, replace the decel-
eration sensor. (8) Jack down the vehicle slowly.
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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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