start system TOYOTA LAND CRUISER 1986 Factory Repair Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 1986, Model line: LAND CRUISER, Model: TOYOTA LAND CRUISER 1986Pages: 3115, PDF Size: 54.88 MB
Page 2425 of 3115
- INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMSIN-33
33 Author: Date:
2004 LAND CRUISER (RM1071U)
5. PROBLEM SYMPTOMS TABLE
The suspected circuits or parts for each problem symptom are shown in the table below. Use this table to
troubleshoot the problem when a ºNormalº code is displayed in the diagnostic trouble code check but the
problem is still occurring. Numbers in the table indicate the inspection order in which the circuits or parts
should be checked.
HINT:
When the problem is not detected by the diagnostic system even though the problem symptom is present,
it is considered that the problem is occurring outside the detection range of the diagnostic system, or that
the problem is occurring in a system other than the diagnostic system.
Symptom
Suspect AreaSee page
Engine does not crank (Does not start)
No initial combustion (Does not start)
No complete combustion (Does not start)1. Starter and starter relay
1. ECM power source circuit
2. Fuel pump control circuit
3. Engine control module (ECM)
1. Starter signal circuit
2. Fuel pump control circuit1. Fuel pump control circuitDI-147
DI-151
IN-29
PROBLEM SYMPTOMS TABLE
1. Compression
2. Fuel pump control circuit 1. A/C signal circuit
2. Fuel pump control circuit 1. A/C signal circuit (Compressor circuit)
2. ECM power source circuit 1. Starter signal circuit
2. Fuel pump control circuit1. Starter signal circuit
2. Fuel pump control circuit
3. Compression
idling) High engine idle speed (Poor idling) Hot engine Cold engine (Difficult to start)Engine cranks normally (Difficult to start)
AC-88 DI-144
DI-151
EM-3 DI-151
Problem Symptom Page
Indicates the page where the flow chart for each circuit
is located.
Circuit Inspection, Inspection Order
Indicates the circuit which needs to be checked for each problem
symptom. Check in the order indicated by the numbers.
Circuit or Part Name
Indicates the circuit or part which needs to be checked.
ST-2
ST-17
DI-144
DI-151
DI-144
DI-151
Page 2427 of 3115
V08425
LOCK
KNK
E6 Connector
(a) Remove the glove compartment (See page SF-68).
(b) Disconnect the E6 connector of ECM.
INSPECTION PROCEDURE
Replace knock sensor. 1 Check continuity between terminal KNK of ECM connector and body ground.
OK:
Check knock sensor (See page SF-61).Measure resistance between terminal KNK of ECM connector
and body ground.
Resistance: 1 MW or higher
Connector being checked is connected. Indicates the condition of the connector of ECU during the check.
PREPARATION:
CHECK:
2Go to step 3.
OK OK
NG
Indicates the position of the ignition switch during the check.
Check from the connector back side.
(with harness)
Ignition Switch LOCK (OFF)
Ignition Switch START
LOCKIgnition Switch ON
Ignition Switch ACC
STARTON
ACC
Indicates the place to check the voltage or resistance.
Indicates the connector position to be checked, from the front or back side.
Connector being checked is disconnected. Check from the connector front side. (without harness)
In this case, care must be taken not to bend the terminals.
E6 Connector KNKWire Harness
E6 Connector KNK
A00255 AB0117
A00265
Inspection Procedure
Use the inspection procedure to determine if
the circuit is normal or abnormal, and, if it is
abnormal, use it to determine whether the
problem is located in the sensors, actuators,
wire harness or ECU.
- INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMSIN-35
35 Author: Date:
2004 LAND CRUISER (RM1071U)
Page 2433 of 3115
IN00U-13
N17080
Filler Cap
Float
Reservoir Tank
Grommet
Clip
Slotted Spring Pin
: Specified torque
Non-reusable partCylinder
Piston
Push Rod
Washer
Snap Ring
Boot
Gasket
Lock Nut
Clevis Pin
Clevis
N´m (kgf´cm, ft´lbf)
12 (120, 9)
15 (155, 11)
- INTRODUCTIONHOW TO USE THIS MANUAL
IN-1
1 Author: Date:
2004 LAND CRUISER (RM1071U)
HOW TO USE THIS MANUAL
GENERAL INFORMATION
1. INDEX
An INDEX is provided on the first page of each section to guide you to the item to be repaired. To assist you
in finding your way through the manual, the Section Title and major heading are given at the top of every
page.
2. GENERAL DESCRIPTION
At the beginning of each section, a General Description is given that pertains to all repair operations con-
tained in that section.
Read these precautions before starting any repair task.
3. TROUBLESHOOTING
TROUBLESHOOTING tables are included for each system to help you diagnose the problem and find the
cause. The fundamentals of how to proceed with troubleshooting are described on page IN-26.
Be sure to read this before performing troubleshooting.
4. PREPARATION
Preparation lists the SST (Special Service Tools), recommended tools, equipment, lubricant and SSM (Spe-
cial Service Materials) which should be prepared before beginning the operation and explains the purpose
of each one.
5. REPAIR PROCEDURES
Most repair operations begin with an overview illustration. It identifies the components and shows how the
parts fit together.
Example:
Page 2670 of 3115
FI2553
SST
B04902Fuel Pump Connector
Disconnect SF-2
- SFISFI SYSTEM
1701 Author: Date:
2004 LAND CRUISER (RM1071U)
(c) Do not a severe impact during removal or installation.
Handle all SFI parts carefully, especially the ECM.
(d) Be careful during the troubleshooting as there are numer-
ous transistor circuit, and even slight terminal contact can
cause further troubles.
(e) Do not open the ECM cover.
(f) When inspecting in rainy weather, take care to prevent
entry of water. Also, when washing the engine compart-
ment, prevent water from getting on the SFI parts and the
wiring connectors.
(g) Parts should be replaced as the original assembly.
(h) Care should be taken when pulling out and inserting the
wiring connectors.
(1) Release the lock and pull out the connector.
(2) Fully insert the connector and check that it is locked.
(i) Use SST for the inspection, the injector and the wiring
connector test.
SST 09842-30070
8. FUEL SYSTEM
(a) When disconnecting the high fuel pressure line, a large
amount of gasoline may be spilled:
(1) Disconnect the fuel pump connector.
(2) Start the engine. After the engine has stopped on
its own, turn the ignition switch OFF.
(3) Put a container under the connection.
(4) Slowly loosen the connection.
(5) Disconnect the connection.
(6) Plug the connection with a rubber plug.
(7) Reconnect the fuel pump connector.
Page 2673 of 3115
B04897
Push
B04896
Pull
A07061
TOYOTA
Hand-Held
Tester
DLC3
- SFISFI SYSTEM
SF-5
1704 Author: Date:
2004 LAND CRUISER (RM1071U)
(4) Match the axis of the connector with that of the pipe,
and push in the connector until the connector
makes a ºclickº sound. In the joint part is too tight to
connect them, apply a little new engine oil on the tip
of the pipe.
(5) After finishing the connection, check if the pipe and
the connector are securely connected by pulling
them.
(6) Check if there is any fuel leakage.
(h) Take following precautions to handle the nylon tube.
(1) Pay attention not to turn the joint part of the nylon
tube and the quick connector by force when con-
necting them.
(2) Pay attention not to twist the nylon tube.
(3) Do not remove the EPDM protector on the outside
of the nylon tube.
(4) Do not connect them by bending the nylon tube.
(i) Check that there are no fuel leaks on the fuel system after
doing the maintenance.
(1) Connect the TOYOTA hand-held tester or OBD II
scan tool to the DLC3.
(2) Turn the ignition switch ON and press the TOYOTA
hand-held or OBD II scan tool tester main switch
ON.
NOTICE:
Do not start the engine.
(3) Select the ACTIVE TEST mode on the TOYOTA
hand-held tester or OBD II scan tool .
(4) Please refer to the TOYOTA hand-held tester or
OBD II scan tool operator's manual for further de-
tails.
(5) If you have no TOYOTA hand-held tester or OBD
II scan tool, connect the positive (+) and negative
(-) leads from the battery to the fuel pump connec-
tor (See page SF-7).
Page 2677 of 3115
SF1UV-01
B15313B16470
A07061
DLC3
TOYOTA
Hand-Held
Tester
B04422
ECM
VPA E2
Voltmeter
- SFITHROTTLE BODY
SF-33
1732 Author: Date:
2004 LAND CRUISER (RM1071U)
THROTTLE BODY
ON-VEHICLE INSPECTION
1. REMOVE V-BANK COVER
2. INSPECT SYSTEM OPERATION
(a) Inspect the throttle control motor for operating sound.
(1) Turn the ignition switch ON.
(2) When turning the accelerator pedal position sensor
lever, check the running sound of the motor. Also,
check that there is no friction sound.
If operation is not as specified, check the throttle control motor
(See step 3), wiring and ECM.
(b) Inspect the accelerator pedal position sensor.
(1) Connect the TOYOTA hand-held tester or OBD II
scan tool to the DLC3.
(2) Check that the MIL does not come on.
(3) When turning the accelerator pedal position sensor
lever to the full- open position, check that the
throttle valve opening percentage (THROTTLE
POS) of CURRENT DATA shows the standard val-
ue.
Standard throttle valve opening percentage:
60 % or more
If operation is not as specified, check that the accelerator pedal
position sensor (See page DI-318), wiring and ECM.
If you have no TOYOTA hand-held tester or OBD II scan tool,
measure the voltage between terminal VPA and E2 of the ECM
connector.
(c) Inspect the air assist system.
(1) Start the engine and check that the MIL does not
come on.
(2) Allow the engine to warm up to normal operating
temperature.
(3) Turn the A/C compressor ON to OFF, and check the
idle speed.
Page 2715 of 3115
H20923
RS-36
- SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
2311 Author: Date:
2004 LAND CRUISER (RM1071U)
Use gloves and safety glasses when handling a front
passenger airbag assembly with deployed airbag.
Always wash your hands with water after completing
the operation.
Do not apply water, etc. to a front passenger airbag
assembly with deployed airbag.
When scrapping a vehicle, deploy the airbag and
scrap the vehicle with the front passenger airbag as-
sembly still installed.
When moving a vehicle for scrapping which has a
front passenger airbag assembly with deployed air-
bag, use gloves and safety glasses.
HINT:
The airbag deploys as the LED of the SST activation switch
comes on.
2. DEPLOYMENT WHEN DISPOSING OF FRONT PAS-
SENGER AIRBAG ASSEMBLY ONLY
NOTICE:
When disposing of the front passenger airbag assem-
bly only, never use the customer's vehicle to deploy
the airbag.
Be sure to follow the procedure given below when de-
ploying the airbag.
HINT:
Have a battery ready as the power source to deploy the airbag.
(a) Remove the front passenger airbag assembly
(See page RS-31).
CAUTION:
When removing the front passenger airbag assembly,
work must be started 90 seconds after the ignition
switch is turned to the ºLOCKº position and the nega-
tive (-) terminal cable is disconnected from the bat-
tery.
When storing the front passenger airbag assembly,
keep the upper surface of the airbag deployment side
facing upward.
Page 2776 of 3115
RS0B6-06
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-1
2276 Author: Date:
2004 LAND CRUISER (RM1071U)
SRS AIRBAG
PRECAUTION
CAUTION:
The LAND CRUISER is equipped with SRS, which comprises a driver airbag, front passenger
airbag, side airbag and curtain shield airbag. Failure to carry out service operations in the cor-
rect sequence could cause the SRS to unexpectedly deploy during servicing, possibly leading
to a serious accident. Further, if a mistake is made in servicing the SRS, it is possible that the
SRS may fail to operate when required. Before performing servicing (including removal or
installation of parts, inspection or replacement), be sure to read the following items carefully,
then follow the correct procedures described in the repair manual.
Work must be started 90 seconds after the ignition switch is turned to the ºLOCKº position and
the negative (-) terminal cable is disconnected from the battery.
(The SRS is equipped with a back-up power source so that if work is started within 90 seconds
from disconnecting the negative (-) terminal cable of the battery, the SRS may be deployed.)
Do not expose the steering wheel pad, front passenger airbag assembly, side airbag assembly,
curtain shield airbag assembly, airbag sensor assembly, front airbag sensor, side and curtain
shield airbag sensor assembly, curtain shield airbag sensor assembly or seat position sensor
assembly directly to hot air or flames.
NOTICE:
Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most impor-
tant source of information when troubleshooting. When troubleshooting the SRS, always in-
spect the DTCs before disconnecting the battery.
Even in the case of a minor collision where the SRS does not deploy, the steering wheel pad,
front passenger airbag assembly, side airbag assembly, curtain shield airbag assembly, airbag
sensor assembly, front airbag sensor, side and curtain shield airbag sensor assembly, curtain
shield airbag sensor assembly and seat position sensor assembly should be inspected (See
page RS-18, RS-32, RS-47, RS-60, RS-71, RS-76, RS-81, RS-87 and RS-92).
Before repairs, remove the airbag sensor if shocks are likely to be applied to the sensor during
repairs.
Never use SRS parts from another vehicle. When replacing parts, replace them with new parts.
Never disassemble and repair the steering wheel pad, front passenger airbag assembly, side
airbag assembly, curtain shield airbag assembly, airbag sensor assembly, front airbag sensor,
side and curtain shield airbag sensor assembly, curtain shield airbag sensor assembly or seat
position sensor assembly in order to reuse it.
If the steering wheel pad, front passenger airbag assembly, side airbag assembly, curtain
shield airbag assembly, airbag sensor assembly, front airbag sensor, side and curtain shield
airbag sensor assembly, curtain shield airbag sensor assembly or seat position sensor assem-
bly has been dropped, or if there are cracks, dents or other defects in the case, bracket or con-
nector, replace it with new one.
Use a volt/ohmmeter with high impedance (10 kW/V minimum) for troubleshooting the system's
electrical circuits.
Information labels are attached to the periphery of the SRS components. Follow the instruc-
tions on the notice.
After work on the SRS is completed, perform the SRS warning light check (See page DI-692).
Page 2777 of 3115
RS-2
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
2277 Author: Date:
2004 LAND CRUISER (RM1071U)
When the negative (-) terminal cable is disconnected from the battery, the memory of the clock
and audio system will be canceled. So before starting work, make a record of the contents mem-
orized in the audio memory system. When work is finished, reset the audio systems as they
were before and adjust the clock. To avoid erasing the memory in each memory system, never
use a back- up power supply from outside the vehicle.
If the vehicle is equipped with a mobile communication system, refer to the precaution in the
IN section.
Page 2782 of 3115
AB0163
Wire Harness
Diameter
Stripped Wire Harness Section
H20646
L
M
H20057
SST
- SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
RS-23
2298 Author: Date:
2004 LAND CRUISER (RM1071U)
HINT:
Have a battery ready as the power source to deploy the airbag.
(a) Remove the steering wheel pad (See page SR-14).
CAUTION:
When storing the steering wheel pad, keep the upper
surface of the pad facing upward.
When removing the steering wheel pad, work must be
started 90 seconds after the ignition switch is turned
to the ºLOCKº position and the negative (-) terminal
cable is disconnected from the battery.
(b) Using a service-purpose wire harness for the vehicle, tie
down the steering wheel pad to the disc wheel.
Wire harness: Stripped wire harness section
1.25 mm
2
or more (0.0019 in2. or more).
CAUTION:
If a wire harness which is too thin or some other thing is
used to tie down the steering wheel pad, it may be snapped
by the shock when the airbag is deployed. This is highly
dangerous. Always use a wire harness for vehicle use
which is at least 1.25 mm
2
(0.0019 in2).
HINT:
To calculate the square of the stripped wire harness section:
Square = 3.14 x (Diameter)
2
divided by 4
(1) Install the 2 bolts with washers in the 2 bolt holes in
the steering wheel pad.
Bolt:
L: 35.0 mm (1.387 in.)
M: 6.0 mm (0.236 in.)
Pitch: 1.0 mm (0.039 in.)
NOTICE:
Tighten the bolts by hand until the bolts become diffi-
cult to turn.
Do not tighten the bolts excessively.
(2) Connect the connectors of the SST to the steering
wheel pad connectors.
SST 09082-00802 (09082-10801, 09082-30801)