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
D02866
ON
OFF
TR06V-02
D02867
L
NH
Z15367
Relay side:
- TRANSFERMOTOR SHIFT CONTROL SYSTEM
TR-49
1937 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. INSPECT SWITCH POSITION
(a) Start the engine, and shift the transfer shift lever to the ºHº
position.
(b) Check that the center diff. indicator light comes on when
the the switch is in ºONº position. Check that the light goes
off when the switch is in ºOFFº position.
2. 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 is shifted to the ºLº position. Check
that the light goes off when the lever is shifted to the ºNº
or ºHº position.
3. INSPECT CENTER DIFF. LOCK CONTROL RELAY
(a) Check that continuity exists between each terminal, as
shown in the chart.
Tester connected terminal numberSpecified condition
1 - 2Continuity
2 - 4Continuity
6 - 7*
*: There is a diode between the terminals 6 and 7.
If no continuity exists, check that continuity exists when chang-
ing the position of probe for the position of negative probe
of tester.
(b) Apply battery positive voltage between each terminal and
check that continuity exists between each terminal, as
shown in the chart.
Battery voltage
applied terminalTester connected terminal
numberSpecified condition
6 (+) - 5 (-)1 - 3
1 - 2Continuity
No continuity
7 (+) - 2 (-)9 - 10No continuity
9 (+) - 10 (-)3 - 4
2 - 4Continuity
No continuity
If continuity is not as specified, replace the relay.
