Lexus NX: Installation

INSTALLATION

CAUTION / NOTICE / HINT

NOTICE:

While the battery is connected, even if the power switch is off, the brake control system activates when the brake pedal is depressed or any door courtesy switch is turned on. Therefore, when servicing the brake system components, do not depress the brake pedal or open/close the doors while the battery is connected.

PROCEDURE

1. INSPECT AND ADJUST BRAKE PEDAL HEIGHT

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2. INSTALL BRAKE PEDAL STROKE SENSOR ASSEMBLY

(a) When installing a new brake pedal stroke sensor assembly:

NOTICE:

Do not break the brake pedal stroke sensor lever set pin before installing the brake pedal stroke sensor assembly with the nut.

(1) Install a new brake pedal stroke sensor assembly to the brake pedal support assembly with the 2 nuts.

Torque:

8.5 N·m {87 kgf·cm, 75 in·lbf}

NOTICE:

  • Engage the brake pedal stroke sensor lever with the brake pedal groove.
  • Check that there is no foreign matter attached to the contact surface of the brake pedal stroke sensor assembly.
  • Check that the tip of the brake pedal stroke sensor lever is protruding from the brake pedal groove.
  • Do not drop the brake pedal stroke sensor. Do not use a brake pedal stroke sensor that has been dropped.
  • Do not apply strong shocks to a brake pedal stroke sensor when installing it.

*1

Brake Pedal Stroke Sensor Lever

*a

Brake Pedal Groove

(2) Firmly depress the brake pedal and break the brake pedal stroke sensor lever set pin.

(3) Remove the broken lever set pin.

(4) Connect the connector.

(b) When reusing the brake pedal stroke sensor assembly:

(1) Install the brake pedal stroke sensor assembly to the brake pedal support assembly and temporarily install the 2 nuts.

NOTICE:

  • Engage the brake pedal stroke sensor lever with the brake pedal groove.
  • Check that there is no foreign matter attached to the contact surface of the brake pedal stroke sensor assembly.
  • Check that the tip of the brake pedal stroke sensor lever is protruding from the brake pedal groove.
  • Do not drop the brake pedal stroke sensor. Do not use a brake pedal stroke sensor that has been dropped.
  • Do not apply strong shocks to a brake pedal stroke sensor when installing it.

*a

Brake Pedal Stroke Sensor Lever

*b

Brake Pedal Groove

(2) Connect the connector.

3. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

(a) Connect the negative (-) auxiliary battery terminal and tighten the nut.

Torque:

5.4 N·m {55 kgf·cm, 48 in·lbf}

4. ADJUST BRAKE PEDAL STROKE SENSOR ASSEMBLY

NOTICE:

When the brake pedal stroke sensor assembly is being reused, perform the following procedure to adjust it.

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / Stroke Sensor.

Chassis > ABS/VSC/TRAC > Data List

Tester Display

Stroke Sensor

(e) Read the stroke sensor value in the Data List, and turn the brake pedal stroke sensor assembly slowly to the right or left to adjust the output voltage so that it is within the following range.

Standard Voltage (without the brake pedal depressed):

0.8 to 1.2 V

(f) Tighten the 2 nuts.

Torque:

8.5 N·m {87 kgf·cm, 75 in·lbf}

NOTICE:

Do not depress the brake pedal after turning the power switch on (IG).

(g) Turn the Techstream off and turn the power switch off.

(h) Disconnect the Techstream.

5. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

CAUTION:

  • Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
  • If the airbag deploys for any reason. it may cause a serious accident.

(a) Loosen the nut and disconnect the negative (-) auxiliary battery terminal.

6. INSTALL LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY

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7. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

(a) Connect the negative (-) auxiliary battery terminal and tighten the nut.

Torque:

5.4 N·m {55 kgf·cm, 48 in·lbf}

8. INITIALIZATION AFTER RECONECTING AUXILIARY BATTERY TERMINAL

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HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

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9. INSTALL DECK FLOOR BOX LH

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10. INSTALL REAR DECK FLOOR BOX

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11. INSTALL NO. 3 DECK BOARD SUB-ASSEMBLY

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12. CHECK AND CLEAR DTC

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13. PERFORM INITIALIZATION AND CALIBRATION OF LINEAR SOLENOID VALVE

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READ NEXT:

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