1996 TOYOTA LAND CRUISER ABS

DI−234
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
2 Check for open and short in harness and connector between ABS ECU and
DLC1, and DLC1 and body ground (See page IN−28).
NG Repair or replace harness or connector.
OK
Check and replace ABS ECU.
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W01184
BR−BGR−R
31 6 15
13
Ts
Ts
DLC1 ABS ECU
12 V
E1IH1 A12
EC
GR−R
F00007
Ts
DLC1
E1
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−235
1996 LAND CRUISER (RM451U)
Ts Terminal Circuit
CIRCUIT DESCRIPTION
The sensor check circuit detects abnormalities in the speed sensor signal which cannot be detecte\
d with
the DTC check. Connecting terminals Ts and E
1 of the DLC1 in the engine compartment starts the check.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Ts and E1 of DLC1.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure the voltage between terminals Ts and E
1 of the
DLC1.
OK:
Voltage: 10 − 14 V
OK If ABS warning light does not blink even after Ts and E
1 are connected, ECU may be defective.
NG
DI5MN−02
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DI−236
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
2 Check for open and short in harness and connector between ABS ECU and
DLC1, and DLC1 and body ground (See page IN−28).
NG Repair or replace harness or connector.
OK
Check and replace ABS ECU.
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H00059
TerminalTime of Body Ground
Tc
Tc
ABOFF
AB
Body
GroundON
OFF
Body
Ground
”1”
”2” ”3”
”4””5”
OFF
1 second
( ± 0.5 sec.) 1 second
( ± 0.5 sec.)
Several
seconds
50 m sec.
50 m sec.
R13819
DI−242
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
1996 LAND CRUISER (RM451U)
4. DTC CLEARANCE (Using diagnosis check wire)
(a) Connect the 2 service wires to terminals Tc and AB of
DLC1.
(b) Turn the ignition switch to ACC or ON and wait approx. 6 seconds.
(c) Starting with the Tc terminal, apply body ground alternate-
ly to terminal Tc and terminal AB twice each in cycles of
1.0 seconds. Confirm that body ground is absolute.
Finally, keep applying body ground to terminal Tc.
HINT:
When alternately grounding terminals Tc and AB, release
ground from one terminal and immediately apply it to the other
terminal within an interval of 0.2 second. If DTCs do not clear,
repeat the above procedure until the codes are cleared.
(d) Several seconds after doing the clearing procedure, the SRS waring light will blink in a 50 m sec. cycle to indicate
the codes have been cleared.
5. USING TOYOTA HAND−HELD TESTER
(a) Hook up the TOYOTA hand−held tester to the DLC1.
(b) Clear the DTC by following the prompts on the tester
screen.
HINT:
Please refer to the T OYOTA hand −held tester operator ’s manu-
al for further details.
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AB0119I00053 I00031
ON
IDL
(−) (+)
−
DIAGNOSTICS CRUISE CONTROL SYSTEM
DI−317
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
1 Check voltage between terminal IDL of cruise control ECU connector and body
ground.
PREPARATION:
(a) Remove the ECU with connector still connected.
(b) Disconnect the ECM and ABS ECU connectors.
(c) Turn ignition switch ON.
CHECK:
Measure voltage between terminal IDL of ECU connector and
body ground when the throttle valve is fully closed and fully
opened.
OK:
Throttle valve positionVoltage
Fully opened10 − 14 V
Fully closedBelow 2 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI−295 ).
NG
2 Check harness and connector between ECM and throttle position sensor (See page IN−28 ).
NG Repair or replace harness or connector.
OK
3 Check throttle position sensor circuit (See page DI−35).
NG Replace throttle position sensor.
OK
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PP3KN−01
PP−52
−
PREPARATION BRAKE
101
Author: Date:
1996 LAND CRUISER (RM451U)
BRAKE
SST (Special Service Tools)
09023−00100Union Nut Wrench 10 mm
09709−29018LSPV Gauge Set
09717−20010Brake Shoe Return Spring Remover
09718−20010Brake Shoe Return Spring
Replacer
09737−00010Brake Booster Push Rod Gauge
09751−36011Brake Line Union Nut 10 x 12 mm
Wrench
09843−18020Diagnosis Check Wire
09990−00150ABS Actuator Checker and
Sub−harness
09990−00200ABS Actuator Checker Sub −harness
”C”
09990−00210ABS Actuator Checker Sub −harness
”E”
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RS0PE−01
−
SUPPLEMENTAL RESTRAINT SYSTEM AIRBAG SENSOR ASSEMBLY
RS−33
1996 LAND CRUISER (RM451U)
REMOVAL
NOTICE:
Do not open the cover or the case of the ECU and various
computers unless absolutely necessary.
(If the IC terminals are touched, the IC may be destroyed by
static electricity.)
1. REMOVE THESE PARTS:
(a) Transfer shirt knob
(b) Front console box
2. REMOVE AIRBAG SENSOR ASSEMBLY
(a) Disconnect the connector.
NOTICE:
Remove the connector with the sensor assembly installed.
(b) Using a torx wrench remove the 4 screws and the airbag sensor assembly.
Torx wrench: T40 (Part No. 09042 −00020 or locally
manufactured tool)
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SA1U7−01
−
SUSPENSION AND AXLE TROUBLESHOOTING
SA−1
858
Author: Date:
1996 LAND CRUISER (RM451U)
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers \
indicate the priority of the likely
cause of the problem. Check each part in order. If necessary, replace these parts.
(w/ Differential locking system):
Check that center differential lock mode is set.
When switching differential Free↔Lock, the indicator lamp will blink if the gears of the differen-
tial lock sleeve are not meshed. If this occurs, when the tires are rotated \
to apply differential
power to the differential, the differential locks and the indicator lamp\
light up.
SymptomSuspect AreaSee page
Wander/ pulls
1. Tires: worn or improperly inflated
2. Wheel alignmemt: incorrect
3. Steering linkage: loosen or worn
4. Hub bearings: loosen or worn
5. Steering gear: out of adjustment or brokenSA−3
SA−4
SR−47 SA−8
SR−41
Bottoming
1. Vehicle: overloaded
2. Spring weak
3. Shock absorber: worn out−
SA−49
SA−49
Sways/ pitches
1. Tires: worn or improperly inflated
2. Stabilizer bar: bent or broken
3. Shock absorber: worn outSA−3
SA−60
SA−49
Front wheel shimmy
1. Tires: worn or improperly inflated
2. Wheels: out of balance
3. Shock absorber: worn out
4. Wheel alignmemt: incorrect
5. Hub bearings: loosen or worn
6. Steering linkage: loosen or worn
7. Steering gear: out of adjustment or brokenSA−3
SA−3
SA−49 SA−3
SA−7
SR−45
SR−38
Abnormal tire wear
1. Tires: worn or improperly inflated
2. Wheel alignmemt: incorrect
3. Suspension parts: worn out
4. Shock absorber: worn outSA−3
SA−3 −
SA−49
Noise in front dif ferential
1. Oil level: low or wrong grade
2. Excessive backlash between pinion and ring gear
3. Ring, pinion ro side gears: worn or chipped
4. Pinion shaft bearing: worn
5. Side bearing: worn
6. Differential bearing: loosen or wornSA−21
SA−29
SA−29
SA−29
SA−29
SA−29
Oil leak from front dif ferential
1. Oil level: too high or wrong grade
2. Drive pinion oil seal: worn or damaged
3. Side gear oil seal: worn or damaged
4. Companion flange: loosen or damaged
5. Side gear shaft: damagedSA−21
SA−29
SA−29
SA−29
SA−29
Noise in rear axle
1. Oil level: low or wrong grade
2. Excessive backlash between pinion and ring gear
3. Ring, pinion ro side gears: worn or chipped
4. Pinion shaft bearing: worn
5. Axle shaft bearing: worn
6. Differential bearing: loosen or wornSA−73
SA−87
SA−87
SA−87
SA−87
SA−87
Oil leak from rear axle1. Oil seal: worn or damaged
2. Rear axle housing: crackedSA−73
−
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