Lexus NX: Terminals Of Ecu

TERMINALS OF ECU

REAR TELEVISION CAMERA ASSEMBLY

(a) Disconnect the Y25 rear television camera assembly connector.

(b) Measure the voltage on the wire harness side connector according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

Y25-6 (CB+) - Body ground

B - Body ground

Power source

Power switch on (ACC)

5.5 to 7.05 V

(c) Reconnect the Y25 rear television camera assembly connector.

(d) Measure the resistance and waveform according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

Y25-2 (CV-) - Body ground

R - Shielded

Ground

Always

Below 1 Ω

Y25-3 (CV+) - Y25-2 (CV-)

W - R

Video signal

Power switch on (IG), shift lever in R, camera lens is not covered, displaying an image

Pulse generation (See waveform 1)

Power switch on (IG), shift lever in R, camera lens is covered, blacking out screen

Pulse generation (See waveform 2)

Y25-5 (CGND) - Body ground

G - Body ground

Shielded ground

Always

Below 1 Ω

(e) Reference (Oscilloscope waveform):

HINT:

A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the radio receiver assembly with the connector connected.

*a

Waveform 1

*b

Waveform 2

*c

Synchronization Signal

*d

Video Waveform

(1) Waveform 1

Item

Content

Terminal No. (Symbol)

Y25-3 (CV+) - Y25-2 (CV-)

Tool Setting

200 mV/DIV., 50 μsec./DIV.

Condition

Power switch on (IG), shift lever in R, camera lens is not covered, displaying an image

HINT:

The video waveform changes according to the image sent by the rear television camera assembly.

(2) Waveform 2

Item

Content

Terminal No. (Symbol)

Y25-3 (CV+) - Y25-2 (CV-)

Tool Setting

200 mV/DIV., 50 μsec./DIV.

Condition

Power switch on (IG), shift lever in R, camera lens is covered, blacking out screen

HINT:

The video waveform changes according to the image sent by the rear television camera assembly.

READ NEXT:

 Diagnosis System

DIAGNOSIS SYSTEM PARKING ASSIST MONITOR DIAGNOSIS SYSTEM (a) For parking assist monitor system diagnosis, signals received by the radio receiver assembly can be checked and the parking assist monitor

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK DTC (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 / Parking Assist Camera / Trou

 Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a pa

SEE MORE:

 ACC Signal Circuit

DESCRIPTION This circuit detects whether the power switch is on (ACC) or off, and sends this information to the main body ECU (multiplex network body ECU). WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following procedu

 Electric Parking Brake System AUTO Function Circuit

DESCRIPTION The parking brake ECU assembly receives shift position information from the hybrid vehicle control ECU via CAN communication. Also, the parking brake ECU assembly receives wheel speed information and stop light switch information from the skid control ECU (brake booster with master cylin

© 2016-2024 Copyright www.lexunx.com