Battery terminals TOYOTA LAND CRUISER 1996 J80 Repair Manual

Z07256
ECU Side
−
SUSPENSION AND AXLE DIFFERENTIAL LOCKING SYSTEM
SA−103
960
Author: Date:
1996 LAND CRUISER (RM451U) DIFF. fuse/
8 (IG) − Body ground
Ignition switch ONBattery positive voltage
Rear diff. lock position switch/
2 (RLP) − Body groundIgnition switch ON,
Indicator light (Rear) ONAbout 0 V
Ignition switch ON,
Indicator light (Rear) OFFBattery positive voltage
Front diff. lock position switch/ 9 (FLP) − Body ground
Ignition switch ON,
Indicator light (front) ON.About 0 V
Ignition switch ON,
Indicator light (front) OFFBattery positive voltage
Center diff. indicator switch/ 15 (4WD) − Body groud
Ignition switch ON,
Indicator light (Center diff. lock) ONAbout 0 V
Ignition switch ON,
Indicator light (Ce nter diff. lock) OFFBattery positive voltage
Differential lock control switch/
12 (R) − Body ground
Ignition switch ON,
Diff. lock control switch RR or FR RRBattery positive voltage
Ignition switch ON,
Diff. lock control switch OFFAbout 0 V
Differential lock control switch/ 6 (RF) − Body ground
Ignition switch ON,
Diff. lock control switch FR RRBattery positive voltage
Ignition switch ON,
Diff. lock control switch OFF or RRAbout 0 V
HINT:
When a signal enters the ECU to LOCK the front dif ferential and
set the rear differential to FREE (when battery positive voltage
is inputted to terminal 6 (RF) of ECU and about 0 V is inputted
to terminal 12 (R)), or a signal to FREE both the front and rear
differentials, the indicator lights keep blinking until the ignition
switch is turned off (Fail−safe function).
If the circuit is not as specified, check and repair or replace the
trouble part shown in the table above.
(b) Inspect the battery positive voltage Battery positive voltage: 10 − 14.5 V
(c) Inspect the system circuit with connector connected (1) Turn the ignition switch to the ON position.
(2) Keep the center Diff. lock condition.
(3) Remove the Diff. lock ECU.
(4) Using a voltmeter, measure the voltage when thedifferential lock control switch is in the position, as
shown below.
Terminals (Symbols)Switch PositionSTD Voltage (V)
15 (4WD) − 13 (GND)−0.5 or less
9 (FLP) − 13 (GND)FR RR0.5 or less
2 (RLP) − 13 (GND)RR or FR RR0.5 or less
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W02075
Heater Main Relay
5 Relay Housing
Metallic Parts
3
2
41
Z07257
Free−Lock
Lock−Free
Heater
Main
Relay Battery Battery
Heater
Main
Relay
SA−104
−
SUSPENSION AND AXLE DIFFERENTIAL LOCKING SYSTEM
961
Author: Date:
1996 LAND CRUISER (RM451U) 3 (M1) −
1 (M2)
OFF − RR
0.5 or less →
10 − 14.5
(Approx. 1 sec) → 0.5 or less
1 (M2) − 3 (M1)RR − OFF
0.5 or less →
10 − 14.5
(Approx. 1 sec) → 0.5 or less
7 (M3) − 5 (M4)OFF or RR − FR RR
0.5 or less →
10 − 14.5
(Approx. 1 sec) → 0.5 or less
5 (M4) − 7 (M3)FR RR − RR or OFF
0.5 or less →
10 − 14.5
(Approx. 1 sec) → 0.5 or less
If the circuit is not as specified, replace the ECU.
(d) Install the ECU in place.
3. INSPECT DIFF. LOCK ACTUATOR
(a) Jack up the vehicle.
(b) Use the heater main relay and connect it, as shown below.
NOTICE:
Connect the terminals being careful not to touch the neigh-
boring terminals or metallic parts of relay housing.
(c) Rotate the tire and check that differential lock has oc- curred.
If operation is not as specified, replace the actuator.
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SA1VO−02
Z07259
Outside
Actuator Installation
Hole Shift Fork
R08154
3
2
1.5
50 °
108 °
Matchmark
(Groove)
SA2306
SA2420
−
SUSPENSION AND AXLE DIFFERENTIAL LOCKING SYSTEM
SA−109
1996 LAND CRUISER (RM451U)
INSTALLATION
1. INSTALL FRONT ACTUATOR
(a) Check that the outermost rack tooth of the shift fork is
virtually above the center line of the actuator installation
hole.
(b) Using a dry cell battery, alig n the matchmark on the pinion
with the center line of the actuator.
NOTICE:
If the pinion of the actuator is not in the specified
place, the actuator is difficult to be installed.
Do not supply the battery positive voltage between
terminals.
If the matchmark comes to the extension limit of the
rotation, do not electrify moreover.
(c) Install a new O−ring to the actuator.
(d) Apply a light coat of gear oil on the O −ring.
(e) Apply MP grease to the gear part of the actuator.
(f) Install the actuator to the differential with the 2 nuts and bolt, so that the outermost rack tooth of the shift fork will
fit matchmark of the pinion of the actuator.
HINT:
Do not damage the O −ring of the actuator.
Torque: 26 N·m (270 kgf·cm, 20 ft·lbf)
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SF1ED−04
−
SFI SFI SYSTEM
SF−1
629
Author: Date:
1996 LAND CRUISER (RM451U)
SFI SYSTEM
PRECAUTION
1. BEFORE WORKING ON FUEL SYSTEM, DISCON-
NECT NEGATIVE (−) TERMINAL CABLE FROM THE
BATTERY.
HINT:
Any diagnostic trouble code retained by the computer will be
erased when the negative ( −) terminal cable is disconnected.
Therefore, if necessary, read the diagnosis before disconnect-
ing the negative ( −) terminal cable from the battery.
2. DO NOT SMOKE OR WORK NEAR AN OPEN FLAME WHEN WORKING ON FUEL SYSTEM.
3. KEEP GASOLINE AWAY FROM RUBBER OR
LEA TH-
ER PARTS
4. MAINTENANCE PRECAUTIONS
(a) In event of engine misfire, these precautions should be taken.
(1) Check proper connection of battery terminals, etc.
(2) Handle high −tension cords carefully.
(3) After repair work, check that the ignition coil termi- nals and all other ignition system lines are recon-
nected securely.
(4) When cleaning the engine compartment, be espe-
cially careful to protect the electrical system from
water.
(b) Precautions when handling the oxygen sensor. (1) Do not allow the oxygen sensor to drop or hit
against an object.
(2) Do not allow the sensor to come in contact with wa- ter.
5. IF VEHICLE IS EQUIPPED WITH MOBILE RA-
DIO
SYSTEM (HAM, CB, ETC.)
If the vehicle is equipped with a mobile communication system,
refer to the precaution in the IN section.
6. AIR INDUCTION SYSTEM
(a) Separation of the engine oil dipstick, oil filler cap, PCV hose, etc. may cause the engine to run out of tune.
(b) Disconnection, looseness or cracks in the parts of the air
induction system between the throttle body and cylinder
head will allow air suction and cause the engine to run out
of tune.
7. ELECTRONIC CONTROL SYSTEM
(a) Before removing SFI wiring connectors, terminals, etc., first disconnect the power by either turning the ignition
switch OFF or disconnecting the negative ( −) terminal
cable from the battery.
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SF1F2−01
SF−52
−
SFI IDLE AIR CONTROL (IAC) VALVE
1996 LAND CRUISER (RM451U)
INSPECTION
INSPECT IDLE AIR CONTROL VALVE OPERATION
(a) Apply battery voltage to terminals B1 and B2, and while repeatedly grounding S1 −S2−S3−S4−S1 in sequence,
and check that the valve moves toward the closed posi-
tion.
(b) Apply battery voltage to terminals B1 and B2, and while repeatedly grounding S4 −S3−S2−S1−S4 in sequence,
and check that the valve moves toward the open position.
If operation is not as specified, replace the IAC valve.
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SF06G−11
P05668
OhmmeterContinuity
No Continuity Ohmmeter
1
2
43
P05667
Ohmmeter Continuity
Battery
1
2
4 3
SF−54
−
SFI EFI MAIN RELAY
682
Author: Date:
1996 LAND CRUISER (RM451U)
EFI MAIN RELAY
INSPECTION
1. REMOVE EFI MAIN RELAY
LOCATION: In the engine compartment relay box.
2. INSPECT EFI MAIN RELAY CONTINUITY
(a) Using an ohmmeter, check that there is continuity be-
tween terminals 1 and 3.
(b) Check that there is no continuity between terminals 2 and
4.
If continuity is not as specified, replace the relay.
3. INSPECT EFI MAIN RELAY OPERATION
(a) Apply battery voltage across terminals 1 and 3.
(b) Using an ohmmeter, check that there is continuity be-
tween terminals 2 and 4.
If operation is not as specified, replace the relay.
4. REINSTALL EFI MAIN RELAY
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SF1F5−01
P05668
OhmmeterContinuity
Ohmmeter
No Continuity
1
2
43
P05667
Ohmmeter 1
2
3
4 Battery
SF−56
−
SFI CIRCUIT OPENING RELAY
1996 LAND CRUISER (RM451U)
INSPECTION
1. REMOVE CIRCUIT OPENING RELAY
2. INSPECT CIRCUIT OPENING RELAY CONTINUITY
(a) Using an ohmmeter, check that there is continuity be- tween terminals 1 and 3.
(b) Check that there is no continuity between terminals 2 and
4.
If continuity is not as specified, replace the relay.
3. INSPECT CIRCUIT OPENING RELAY OPERATION
(a) Apply battery voltage across terminals 1 and 3.
(b) Using an ohmmeter, check that there is continuity be- tween terminals 2 and 4.
If operation is not as specified, replace the relay.
4. REINSTALL CIRCUIT OPENING RELAY
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SF1F7−01
P09134
OhmmeterContinuity
Ohmmeter Ohmmeter
Continuity
No Continuity FP
PR
FPR
+B1
+B2
P09135
Ohmmeter
No
Continuity
Battery
Ohmmeter
Continuity +B1
+B2 FP
PR
FPR
−
SFI FUEL PUMP RELAY
SF−57
685
Author: Date:
1996 LAND CRUISER (RM451U)
FUEL PUMP RELAY
INSPECTION
1. REMOVE FUEL PUMP RELAY
(a) Disconnect the fuel pump relay connector.
(b) Remove the bolt and fuel pump relay.
2. INSPECT FUEL PUMP RELAY CONTINUITY
(a) Using an ohmmeter, check that there is continuity be-
tween terminals +B1 and FPR.
(b) Check that there is continuity between terminals +B2 and
FP.
(c) Check that there is no continuity between terminals +B2
and PR.
If continuity is not as specified, replace the relay.
3. INSPECT FUEL PUMP RELAY OPERATION
(a) Apply battery voltage across terminals +B1 and FPR.
(b) Using an ohmmeter, check that there is no continuity be- tween the +B2 and FP.
(c) Check that there is continuity between terminals +B2 and
PR.
If operation is not as specified, replace the relay.
4. REINSTALL FUEL PUMP RELAY
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SF1F9−01
−
SFI VSV FOR FUEL PRESSURE CONTROL
SF−59
687
Author: Date:
1996 LAND CRUISER (RM451U)
VSV FOR FUEL PRESSURE
CONTROL
INSPECTION
1. REMOVE AIR INTAKE CHAMBER (See page EM−28 )
2. DISCONNECT VACUUM HOSES AND CONNECTOR
3. INSPECT VSV FOR OPEN CIRCUIT
Using an ohmmeter, check that there is continuity between the
terminals. Resistance: 37 − 44 Ω at 20° C (68°F)
If there is no continuity, replace the VSV.
4. INSPECT VSV FOR GROUND
Using an ohmmeter, check that there is no continuity between
each terminal and the body.
If there is continuity, replace the VSV.
5. INSPECT VSV OPERATION
(a) Check that the air flows from pipe E to pipe G.
(b) Apply battery voltage across the terminals.
(c) Check that the air does not flows from pipe E to the filter.
If operation is not as specified, replace the VSV.
6. RECONNECT VACUUM HOSES AND CONNECTOR
7. REINSTALL AIR INTAKE CHAMBER (See page EM−54 )
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Q02622
Light upGoes off
L
NH
DIFF LOCK
DIFF LOCK
TR0BM−03
Z15367
Relay Side
V01699
V06651
−
TRANSFER MOTOR SHIFT CONTROL SYSTEM
TR−37
1996 LAND CRUISER (RM451U)
INSPECTION
1. INSPECT SHIFT LEVER POSITION
(a) Start the engine, and turn the center diff lock switch to
OFF.
(b) Check that the center diff indicator light comes on when the transfer shift lever shifted to the ”L” position. Check
that the light goes off when the lever is shifted to the ”N”
or ”H” position.
2. INSPECT CENTER DIFF LOCK CONTROL RELAY
(a) Check that there is continuity between the terminals, as shown in the chart.
HINT:
There is a diode between the terminals 6 and 7. If the circuit
shown no continuity, change the positive (+) and negative ( −)
probes and recheck the circuit.
(b) Apply battery positive voltage between the terminals and check that there is continuity between the terminals, as
shown in the chart.
If continuity is not as specified, replace the relay.
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