1986 TOYOTA LAND CRUISER ignition

F05176
SA165-06
Z16659
M1 M2
- SUSPENSION AND AXLEDIFFERENTIAL LOCKING SYSTEM
SA-163
2113 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DIFFERENTIAL LOCKING SYSTEM
ON-VEHICLE INSPECTION
1. INSPECT DIFFERENTIAL LOCK SYSTEM
(a) Inspect the indicator light.
Check that the indicator light lights up for approx. 1 se-
cond when the ignition switch is turned ON.
(b) Inspect the differential lock operation.
(1) Jack up the vehicle then start the engine.
(2) Shift the transfer shift lever to L position.
(3) When the diff. lock control switch is set to the RR
position, the indicator light 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) Check the voltage between the terminals of the rear
diff. lock control ECU when switching the diff. lock
control switch with the speedometer, registering
approx. 8 km/h (5 mph) or more.
Swith positionTerminalSpecified value
ONM1 - M20.5 V or less
(No change)
(6) Return the diff. lock control switch to OFF.
(7) Stop the engine and lower the vehicle.
2. INSPECT DIFF. LOCK SYSTEM CIRCUIT
(a) Inspect the battery positive voltage.
Battery positive voltage: 10 - 14 V

Z16462
RLP RM1 M2
4WD GND SPD IG Wire harness:
Z16461
GND
4WDRLP M1M2 ECU: SA-164
- SUSPENSION AND AXLEDIFFERENTIAL LOCKING SYSTEM
2114 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(b) Inspect the system circuit with the connector discon-
nected.
Disconnect the connector from the rear diff. lock control
ECU and inspect the connector on the wire harness side,
as shown in the table.
Symbols (Terminals No.)Trouble partConditionSpecified value
M1 - M2RR Diff. Lock Actuator-Less than 100 W
GND - Body groundBody ground-Continuity
SPD - Body groundSpeed sensorVehicle moves slowly1 pulse each
40 cm (15.75 in.)
IG - Body groundDIFF FuseIgnition switch ON10 - 14 V
RLP B d dRear Diff. Lock Indica-Ignition switch ON with indicator light ONAbout 0 VRLP - Body groundRear Diff. Lock Indica
tor SwitchIgnition switch ON with indicator light OFF10 - 14 V
4WD B d dL iti S it hIgnition switch ON with T/F shift lever except LAbout 0 V4WD - Body groundL position SwitchIgnition switch ON with T/F shift lever L10 - 14 V
RBd dDifferential Lock Con-Ignition switch ON with differential lock control switch RR10 - 14 VR - Body groundDifferential Lock Con
trol SwitchIgnition switch ON with differential lock control switch OFFAbout 0 V
HINT:
If the circuit is not as specified value, check and repair or re-
place the trouble part shown in the table above.
(c) Inspect the system circuit with the connector connected.
(1) Turn the ignition switch to the ON position.
(2) Shift the transfer shift lever to L position.
(3) Using a voltmeter, measure the voltage when the
differential lock control switch is in the position, as
shown in the table.
Tester Connection

- Switch positionSpecified valve
4WD - GND-10 - 14 V
RLP - GNDRR*0.5 V or less
M1 - M2OFF " RR0.5 V or less " 10 - 14 V
(A 1 )05VM2 - M1RR " OFF(Approx. 1 sec.) "0.5 V
or less
*: The rear differential should be locked mechanically.
If the circuit is not as specified value, replace the ECU.
(4) Install the ECU in place.

SA167-05
F05181
F05083
F04360
SA-168
- SUSPENSION AND AXLEDIFFERENTIAL LOCKING SYSTEM
2118 Author
: Date
:
2004 LAND CRUISER (RM1071U)
REMOVAL
1. SHIFTING REAR DIFF. LOCK POSITION
(a) Turn the ignition switch to the ON position.
(b) Shift the transfer shift lever to L position.
(c) Turn the differential lock control switch to the RR position
and lock the rear differential.
HINT:
While rotating the rear wheels, check they are in the differential
lock condition.
(d) Disconnect the cable from the negative terminal of the
battery.
2. REMOVE NO. 1 ACTUATOR PROTECTOR
Remove the nut, bolt and No. 1 actuator protector.
3. REMOVE NO. 2 ACTUATOR PROTECTOR
Remove the 2 nuts and No. 2 actuator protector.
4. DISCONNECT CONNECTORS AND TUBE
5. REMOVE REAR DIFF. LOCK POSITION SWITCH
6. REMOVE COVER
(a) Remove the 3 bolts.
(b) Using a brass bar and hammer, remove the cover.
7. REMOVE ACTUATOR
(a) Remove the shift fork set bolt.
(b) Remove the 4 bolts.
(c) Using a screwdriver, pry out the actuator.

SA15T-04
F05181
F04386
SST
- SUSPENSION AND AXLEREAR DIFFERENTIAL CARRIER (w/ Diff. Lock)
SA-1 19
2069 Author
: Date
:
2004 LAND CRUISER (RM1071U)
REMOVAL
1. SHIFTING REAR DIFF. LOCK
(a) Turn the ignition switch to the ON position.
(b) Shift the transfer shift lever to L position.
(c) Turn the differential lock control switch to the RR position
and lock the rear differential.
HINT:
While rotating the tires, check they are in the differential lock
condition.
(d) Disconnect the cable from the negative terminal of the
battery.
2. REMOVE 2 REAR WHEELS
Torque: 131 N´m (1,340 kgf´cm, 97 ft´lbf)
3. DRAIN HYPOID GEAR OIL
Torque: 49 N´m (500 kgf´cm, 36 ft´lbf)
4. DISCONNECT BRAKE LINES
(a) Using SST, disconnect the brake line and remove the clip.
SST 09023-00100
Torque: 15 N´m (150 kgf´cm, 11 ft´lbf)
(b) Employ the same manner described above to the other
side.
5. DISCONNECT PARKING BRAKE CABLES
(a) Remove the 2 clips, pin and disconnect the parking brake
cable from the bellcrank.
(b) Employ the same manner described above to the other
side.