STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: CALIBRATION; 2007 MY LX470 [08/2006

Last Modified: 7-3-2017	6.8:8.0.40	Doc ID: RM0000018P8001X
Model Year Start: 2007	Model: LX470	Prod Date Range: [08/2006 - ]
Title: STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: CALIBRATION; 2007 MY LX470 [08/2006 - ]

CALIBRATION

1. VGRS SYSTEM CALIBRATION PROCEDURE (USING SST CHECK WIRE)

NOTICE:

Use this procedure to center the steering wheel position if:

VGRS actuator has been replaced
VGRS ECU has been replaced
Steering column or gear has been disconnected
Steering wheel is still off-center after completing the "STEERING ANGLE SENSOR INITIALIZATION" procedures.

1.	FACE TIRES STRAIGHT AHEAD (ACTUATOR ANGLE INITIALIZATION)

NOTICE:

Drive the vehicle to confirm that the steering wheel is centered.

2.	CHECK FOR DTC

(a) Check for DTC.

Result	Proceed to
DTC C1515/15 is not output	A
DTC C1515/15 is output	B

Go to step 4

3.	ACTUATOR ANGLE INITIALIZATION

NOTICE:

Complete steps *1 to *3 within 1 minute.

(a) Turn the ignition switch ON.

(b) Start the engine.

(d) Using SST (check wire), connect the terminals 12 (TS) and 4 (CG) of DLC3.

SST: 09843-18040

(e) *1: Connect and disconnect the SST check wire to the terminal 13 (TC) of DLC3 10 times or more within 20 seconds.

(f) *2: Turn the steering wheel to the left 180° or more and then return to the center position.

(g) *3: Connect and disconnect the SST check wire to the terminal 13 (TC) of DLC3 10 times or more within 20 seconds.

(h) Check that the VGRS warning light is ON.

HINT:

When the VGRS warning light illuminates, DTC 1515/15 is stored.

(i) Disconnect the SST check wire from the DLC3.

(j) Turn the ignition switch OFF.

Go to step 1

4.	CONFIRM STEERING CENTER (STEERING ANGLE ADJUSTMENT)

(a) Confirm that the steering wheel is centered when facing the tires straight ahead.

NOTICE:

Drive the vehicle to confirm that the steering wheel is centered.

Result	Proceed to
Steering wheel is off-center	A
Steering wheel is center	B

Go to step 8

5.	UNLOCK VGRS ACTUATOR

NOTICE:

Do not start the engine.

(a) Turn the ignition switch OFF.

(b) Disconnect the negative (-) battery terminal.

(d) Connect the positive (+) lead from the battery to terminal MV (V13-10) and the negative (-) lead to terminal LGND (V13-3).

NOTICE:

Do not apply the battery voltage for more than 3 minutes.

6.	STEERING CENTER ADJUSTMENT

(a) Turn the steering wheel to the center.

NOTICE:

If the spiral cable for the airbag is not centered when installing the steering wheel, adjust the spiral cable to the center .

7.	LOCK VGRS ACTUATOR

(a) Confirm that the ignition switch is OFF.

(b) Reconnect the V13 VGRS ECU.

(d) Turn the steering wheel to the right and left by about 5 °and check that the steering wheel is level.

NOTICE:

A DTC will be detected later if the steering wheel is not turned to the right and left by about 5 °.

Go to step 1

8.	ADJUST ACTUATOR ANGLE (ACTUATOR ANGLE ADJUSTMENT)

HINT:

Actuator angle adjustment is completed by turning the Test Mode ON and OFF.

(a) Make sure the ignition switch is OFF.

(b) Using the SST check wire, connect the terminals 12 (TS) and 4 (CG) of DLC3.

SST: 09843-18040

(d) Check that the VGRS warning light is blinking.

(e) Turn the ignition switch OFF and disconnect the SST check wire from the DLC3.

(f) Actuator angle sensor learning confirmation procedure:

(1) *1: Start the engine.

(2) *2: Turn the steering wheel from center to the left 90°and then back to center.

(3) *3: Turn the steering wheel from center to the right 90°and then back to center.

(4) *4: Confirm that the steering wheel is centered.

(5) *5: Hold the steering wheel in the centered position for 3 seconds.

(6) *6: Perform the following check procedure:

Turn the steering wheel slowly to the left.
While turning the steering wheel to the left, turn off the engine.
Continue to turn the steering wheel slowly to the left for 3 seconds.

(7) Repeat steps *1 to *6 15 times.

CAUTION:

DTC C1568/68 requires that the fault occurs 5 consecutive times to set. The confirmation procedure must be performed multiple times to ensure the condition does not repeat.

(8) Recheck for DTCs.

If C1568/68 is set, repeat the procedure. If C1568/68 is set again, replace the VGRS actuator.

END

2. VGRS SYSTEM CALIBRATION PROCEDURE (USING INTELLIGENT TESTER)

(a) Stop the vehicle and face the tires straight ahead.

(b) Connect the intelligent tester (with CAN VIM) to the DLC3.

(d) Perform the steering angle adjust procedure from the VGRS menu.

(e) Follow the tester prompts to complete procedure.

(f) Confirm that the VGRS warning light is OFF.

(g) Turn the ignition switch OFF.

(h) Disconnect the intelligent tester.

(i) Confirm normal VGRS light operation.

(j) Start the engine.

(k) Turn the steering wheel from lock to lock to check that it rotates approximately 2.4 turns.

(l) Actuator angle sensor learning confirmation procedure:

(1) *1: Start the engine.

(2) *2: Turn the steering wheel from center to the left 90° and then back to center.

(3) *3: Turn the steering wheel from center to the right 90° and then back to center.

(4) *4: Confirm that the steering wheel is centered.

(5) *5: Hold the steering wheel in the centered position for 3 seconds.

(6) *6: Perform the following check procedure:

Turn the steering wheel slowly to the left.
While turning the steering wheel to the left, turn off the engine.
Continue to turn the steering wheel slowly to the left for 3 seconds.

(7) Repeat steps *1 to *6 15 times.

CAUTION:

DTC C1568/68 requires that the fault occurs 5 consecutive times to set. The confirmation procedure must be performed multiple times to ensure the condition does not repeat.

(8) Recheck for DTCs.

If C1568/68 is set, repeat the procedure. If C1568/68 is set again, replace the VGRS actuator.

(m) Drive vehicle to confirm that the steering wheel is centered.