1996 TOYOTA LAND CRUISER ignition

Z05490
Secondary LockPrimary Lock Lock Lock
Primary Lock Incomplate
(Secondary Lock Prevended) Primary Lock Complate
(Secondary Lock Permitted
Twin−Lock Complated
Z14034
Fig.1
Fig.2 Power Source
SafingSensor Squibs
Airbag
Sensor
RS−6
−
SUPPLEMENTAL RESTRAINT SYSTEM SRS AIRBAG
1996 LAND CRUISER (RM451U)
(4) Connector Twin −Lock Mechanism
With this mechanism connectors (male and female
connectors) are locked by 2 locking devices to in-
crease connection reliability. If the primary lock is in-
complete, ribs interfere and prevent the secondary
lock.
(b) When the vehicle is involved in a frontal collision in the hatched area (Fig. 1) and the shock is larger than the pre-
determined level, the SRS is activated automatically. A
safing sensor is designed to go on at a smaller decelera-
tion rate than the airbag sensor. As illustrated in Fig. 2,
ignition is caused when current flows to the squib, which
happens when a safing sensor and the airbag sensor go
on simultaneously.When a deceleration force acts on the
sensors, two squibs in the driver airbag and front passen-
ger airbag ignite and generate gas. The gas discharging
into the driver airbag and front passenger airbag rapidly
increases the pressure inside the bags, breaking open
the steering wheel pad and instrument panel door.
Bag inflation then ends, and the bags deflate as the gas
is discharged through discharge holes at the bag’s rear or
side.
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RS0P8−01
RS−22
−
SUPPLEMENTAL RESTRAINT SYSTEM FRONT PASSENGER AIRBAG ASSEMBLY
1996 LAND CRUISER (RM451U)
REMOVAL
NOTICE:
If the wiring connector of the SRS is disconnected with the
ignition switch at ON or ACC, DTCs will be recorded.
1. DISCONNECT AIRBAG CONNECTOR
(a) Remove the glove compartment door (See page BO−76 ).
(b) Remove the airbag connector from the airbag bracket.
NOTICE:
When handling the airbag connector , take care not to dam-
age the airbag wire harness.
(c) Disconnect the airbag connector.
2. REMOVE INSTRUMENT PANEL
(See pages BO−76 )
3. REMOVE FRONT PASSENGER AIRBAG ASSEMBLY
(a) Remove the 4 bolts and 2 nuts, and remove front passen-
ger airbag assembly.
(b) Pry up the 6 clips shown in the illustration and remove the airbag door.
CAUTION:
Do not store the front passenger airbag assembly with the
airbag deployment direction facing down.Never disas-
semble the front passenger airbag assembly.
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AB0163
Wire Harness
Diameter
Stripped Wire Harness Section
−
SUPPLEMENTAL RESTRAINT SYSTEM FRONT PASSENGER AIRBAG ASSEMBLY
RS−27
1996 LAND CRUISER (RM451U)
(e) Dispose of the front passenger airbag assembly.
CAUTION:
The front passenger airbag assembly is very hot
when the airbag is deployed, so leave it alone for at
least 30 minutes after deployment.
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.
(1) When scrapping a vehicle, deploy the airbag and scrap the vehicle with the front passenger airbag
assembly still installed.
(2) When moving a vehicle for scrapping which has a front passenger airbag assembly with deployed air-
bag, use gloves and safety glasses.
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−22 )
CAUTION:
When removing the front passenger airbag assembly,
work must be started 90 seconds after the ignition
switch is turned to the ”LOCK” position and the nega-
tive (−) terminal cable is disconnected from the bat-
tery.
Store the front passenger airbag assembly with the
airbag deployment side facing upward.
(b) Using a service− purpose wire harness for the vehicle, tie
down the front passenger airbag assembly to the tire.
Wire harness: Stripped wire harness section
1.25 mm
2 or more (0.0019 in.2 or more)
HINT:
To calculate the square of the stripped wire harness section: Square = 3.14 X (Diameter)
2 divided by 4
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SA1UM−03
FA2038
−
SUSPENSION AND AXLE FRONT DIFFERENTIAL CARRIER
SA−27
1996 LAND CRUISER (RM451U)
REMOVAL
1. w/ DIFFERENTIAL LOCK:
BEFORE REMOVAL, SHIFT FRONT DIFFERENTIAL
TO LOCK
(a) Turn the ignition switch to the ON position.
(b) Keep the center differential lock condition.
(c) Turn the differential lock control switch to the FR/RR posi-
tion and lock the front differential.
(d) Rotating the tires, check they are in the differential lock condition.
(e) Disconnect the cable from the negative terminal of the battery.
2. DRAIN DIFFERENTIAL OIL
3. REMOVE FRONT AXLE SHAFTS (See page SA−13)
4. REMOVE TIE ROD FROM KNUCKLE ARM (See page SA−13 )
5. REMOVE FRONT PROPELLER SHAFT (See page PR−3 )
6. w/ DIFFERENTIAL LOCK: DISCONNECT CONNECTORS AND TUBE
HINT:
When connecting the tube of the harness side to the hose
of the actuator side, its depth of insertion is 15 mm (0.59
in.).
Take care that water or equivalent does not adhere to the
connector and hose.
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SA24T−01
SA2310
−
SUSPENSION AND AXLE REAR DIFFERENTIAL CARRIER
SA−79
1996 LAND CRUISER (RM451U)
REMOVAL
1. w/ Differential lock:
SHIFT REAR DIFFERENTIAL TO LOCK
(a) Turn the ignition switch to the ON position.
(b) Keep the center differential lock condition.
(c) Turn the differential lock control switch to the RR or FR/ RR position and lock the rear differential.
HINT:
Rotating the tires, check they are in the differential lock condi-
tion.
(d) Disconnect the cable from the negative terminal of the battery.
2. DRAIN DIFFERENTIAL OIL
3. REMOVE REAR AXLE SHAFTS (See page SA−63 )
4. DISCONNECT PROPELLER SHAFT (See page PR−3 )
5. REMOVE DIFFERENTIAL CARRIER ASSEMBLY
(a) Remove the 10 nuts, washers and differential carrier as- sembly.
NOTICE:
Be careful not to damage the installation surface. Torque: 73 N·m (740 kgf·cm, 54 ft·lbf)
(b) Remove the gasket.
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SA1VL−03
−
SUSPENSION AND AXLE DIFFERENTIAL LOCKING SYSTEM
SA−101
958
Author: Date:
1996 LAND CRUISER (RM451U)
DIFFERENTIAL LOCKING SYSTEM
ON−VEHICLE INSPECTION
1. INSPECT DIFFERENTIAL LOCK SYSTEM
(a) Inspect the indicator lights.
Check that the indicator lights (front side and rear side)
light up for approx. 1 second when the ignition switch is
turned ON.
(b) Inspect the differential lock operation. (1) Jack up the vehicle then start the engine.
(2) Put the transfer shift lever on the L position.
(3) When the Diff. lock control switch is set to the RR
position, the indicator light (rear side) is turned on.
Differential lock is applied to the rear wheel at this
time.
HINT:
If the gears of the differential lock system are not meshed, the
indicator light remains blinking, so rotate the tires to mesh the
gear.
(4) When the Diff. lock control switch is at the OFF posi-
tion, the indicator light goes off.
Differential lock is released for the rear wheel at this
time.
(5) When the Diff. lock control switch is set to the FR/ RR position, the indicator lights (front side and rear
side) are turned on.
Differential lock is applied to both the front wheels
and rear wheels at this time.
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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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Z15220
FIPG Width Approx.
1 − 2 mm (0.04 − 0.08 in.)
Z07262Adhesive
SA2620
SA−11 0
−
SUSPENSION AND AXLE DIFFERENTIAL LOCKING SYSTEM
1996 LAND CRUISER (RM451U)
(g) Connect the connector and tube.
HINT:
The depth of the insertion of the bleeder tube into the
hose is approx. 15 mm (0.59 in.).
Take care that water or the equivalent will not adhere to
the connector and hose.
(h) Cancel the front differential lock.
With the ignition switch ON, turn the differential lock con-
trol switch to OFF to cancel the differential lock.
2. INSTALL REAR ACTUATOR
(a) Clean contacting surfaces of any FIPG material using gasoline or alcohol.
(b) Apply FIPG to the actuator. FIPG: Part No. 08826−00090, THREE BOND 1281 or
equivalent
HINT:
Install the actuator within 10 minutes after applying FIPG.
(c) Install the actuator to the differential and match the shaft with the shaft fork hole.
(d) Clean the threads of the set bolt and shaft fork with the white gasoline.
(e) Coat the threads of the set bolt with adhesive.
Adhesive: Part No. 08833 −00070, THREE BOND 1324
or equivalent
(f) Tighten the shift fork set bolt. Torque: 20 N·m (200 kgf·cm, 14 ft·lbf)
(g) Tighten the 4 bolts uniformly, a little at a time. Torque: 24 N·m (240 kgf·cm, 17 ft·lbf)
(h) Install the cover. (1) Clean the contacting surfaces of any FIPG material
using gasoline or alcohol.
(2) Apply FIPG to the cover.
FIPG: Part No. 08826−00090, THREE BOND 1281 or
equivalent
HINT:
Install the cover within 10 minutes after applying FIPG.
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