Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM0000018CQ003X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: HF2A TRANSFER: TRANSFER SYSTEM: ON-VEHICLE INSPECTION; 2007 MY LX470 [08/2006 -        ]

ON-VEHICLE INSPECTION

1. CHECK DIFFERENTIAL LOCK INDICATOR SWITCH POSITION

(a) Start the engine, and shift the transfer shift lever to the "H" position.

(b) Check that the center differential indicator light comes on when the switch is in "ON" position. Check that the light goes off when the switch is in "OFF" position.

2. CHECK SHIFT LEVER POSITION

(a) Start the engine, and turn the center differential lock switch OFF.

(b) Check that the center differential indicator light comes on when the transfer shift lever is shifted to the "L" position. Check that the light goes off when the lever is shifted to the "N" or "H" position.

3. INSPECT CENTER DIFFERENTIAL LOCK CONTROL RELAY

(a) Check that continuity exists between each terminal, as shown in the chart.

OK:

Tester Connection

Specified Condition

1 - 2

Continuity

2 - 4

Continuity

6 - 7

*
  • *: There is a diode between the terminals 6 and 7.

If no continuity exists, check that continuity exists when changing the position of positive (+) probe for the position of negative (-) probe of the tester.

(b) Apply battery positive voltage between each terminal and check that continuity exists between each terminal, as shown in the chart.

OK:

Battery Voltage Applied Terminal

Tester Connection

Specified Condition

6 (+) - 5 (-)

1 - 3

Continuity

6 (+) - 5 (-)

1 - 2

No continuity

7 (+) - 2 (-)

9 - 10

No continuity

9 (+) - 10 (-)

3 - 4

Continuity

9 (+) - 10 (-)

2 - 4

No continuity
  • If continuity is not as specified, replace the relay.

4. CHECK ACTUATOR OPERATION

(a) Raise up the front wheels, place the stopper under the rear wheels to block them, and pull up the parking brake.

(b) Disconnect the connector of the actuator and connect it to the relay using wire.

(c) Check that the front propeller shaft can be rotated by hand.

HINT:

When inspecting the operation described above, use a heater main relay.

OK:

Inspection Item

Specified Condition

Center Differential

Free → Lock

Front propeller shaft cannot be rotated.

Center Differential

Lock → Free

Front propeller shaft can be rotated.

NOTICE:

Connect the terminals being careful not to touch the neighboring terminals or metallic parts of relay housing.