Lexus NX: Turn Signal Switch Circuit

DESCRIPTION

The combination meter receives the turn signal switch information and controls the turn signal lights.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When replacing the combination meter assembly, make sure to replace it with a new one.

PROCEDURE

1.

READ VALUE USING TECHSTREAM (TURN SIGNAL SWITCH)

(a) Using the Techstream, read the Data List.

Click here

Body Electrical > Combination Meter > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Turn Signal Switch (Right)

Turn signal switch (right) signal

ON or OFF

ON: Turn signal switch (right) on

OFF: Turn signal switch (right) off

-

Turn Signal Switch (Left)

Turn signal switch (left) signal

ON or OFF

ON: Turn signal switch (left) on

OFF: Turn signal switch (left) off

-

Body Electrical > Combination Meter > Data List

Tester Display

Turn Signal Switch (Right)

Turn Signal Switch (Left)

Result

Proceed to

Data List values are as specified

A

Data List values are not as specified

B

A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

B

2.

INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY (TURN SIGNAL SWITCH)

(a) Remove the headlight dimmer switch assembly.

Click here

(b) Inspect the headlight dimmer switch assembly.

Click here

NG

REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY

OK

3.

CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH ASSEMBLY - COMBINATION METER ASSEMBLY AND BODY GROUND)

(a) Disconnect the I126 headlight dimmer switch assembly connector.

(b) Disconnect the I11 combination meter assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

I126-11 (TL) - I11-4 (EL)

Always

Below 1 Ω

I126-12 (TR) - I11-3 (ER)

I126-13 (CR) - I11-8 (SW)

I126-15 (EL) - Body ground

I126-11 (TL) - Body ground

Always

10 kΩ or higher

I126-12 (TR) - Body ground

I26-13 (CR) - Body ground

OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

READ NEXT:

 Headlight Dimmer Switch Circuit

DESCRIPTION The main body ECU (multiplex network body ECU) receives light control switch signals, dimmer switch signals, fog light switch signals from the headlight dimmer switch. WIRING DIAGRAM CAUT

 Daytime Running Light Relay Circuit

DESCRIPTION The illumination of the daytime running light (clearance light assembly) or clearance light is controlled by the headlight light control ECU sub-assembly. WIRING DIAGRAM CAUTION / NOTICE

 Front Fog Light Circuit

DESCRIPTION Illumination of the front fog lights is controlled by the main body ECU (multiplex network body ECU). WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits rela

SEE MORE:

 Removal

REMOVAL PROCEDURE 1. REMOVE REAR SEAT ASSEMBLY (a) for Manual Seat: Click here (b) for Power Seat: Click here 2. REMOVE REAR FLOOR FINISH PLATE Click here 3. DISCONNECT REAR DOOR OPENING TRIM WEATHERSTRIP RH Click here 4. REMOVE UPPER DECK TRIM SIDE BOARD RH Click here 5. REMOVE ROPE HOO

 Installation

INSTALLATION PROCEDURE 1. INSTALL POWER BACK DOOR WARNING BUZZER (a) Attach the clamp to install the power back door warning buzzer. (b) Connect the connector. 2. INSTALL BACK DOOR TRIM BOARD ASSEMBLY Click here 3. INSTALL BACK DOOR LOCK COVER Click here 4. INSTALL PULL HANDLE Click here 5.

© 2016-2024 Copyright www.lexunx.com