Toyota 4Runner: Terminals Of Ecu

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Park Assist / Monitoring / Rear View Monitor System(for Radio And Display Type) / Terminals Of Ecu

TERMINALS OF ECU

1. REAR TELEVISION CAMERA ASSEMBLY

(a) Disconnect the Y2 rear television camera assembly connector.

(b) Measure the voltage according to the value(s) in the table below.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
Y2-6 (CB+) - Y2-5 (CGND)	R - BR	Power source	Within 60 seconds of turning the ignition switch to ACC	5.5 to 7.05 V

(d) Measure the voltage and check for pulses between each terminal of the connector.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
Y2-2 (CV-) - Y2-3 (CV+)	B - W	Video signal	Ignition switch ON Shift lever in R Camera lens not covered, displaying an image	Pulse generation (See waveform 1)
Ignition switch ON Shift lever in R Camera lens covered, blacking out screen	Pulse generation (See waveform 2)
Y2-5 (CGND) - Body ground	BR - Body ground	Ground	Always	Below 1 V

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

Y2-2 (CV-) - Y2-3 (CV+)

B - W

Video signal

Ignition switch ON

Shift lever in R

Camera lens not covered, displaying an image

Pulse generation

(See waveform 1)

Ignition switch ON

Shift lever in R

Camera lens covered, blacking out screen

Pulse generation

(See waveform 2)

Y2-5 (CGND) - Body ground

BR - Body ground

Ground

Always

Below 1 V

HINT:

A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the rear television camera assembly with the connector connected.
If the result is not as specified, the rear television camera assembly may be malfunctioning.

(e) Reference (Oscilloscope waveform):

HINT:

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

(1) Waveform 1 (camera lens is not covered, displaying an image)

Item	Content
Terminal No. (Symbol)	Y2-2 (CV-) - Y2-3 (CV+)
Tool Setting	200 mV/DIV., 50 μsec./DIV.
Condition	Ignition switch ON, shift lever in R

HINT:

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

(2) Waveform 2 (camera lens is covered, blacking out the screen)

Item	Content
Terminal No. (Symbol)	Y2-2 (CV-) - Y2-3 (CV+)
Tool Setting	200 mV/DIV., 50 μsec./DIV.
Condition	Ignition switch ON, shift lever in R

HINT:

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

Text in Illustration

*a	Waveform 1 (camera lens is not covered, displaying an image)
*b	Waveform 2 (camera lens is covered, blacking out the screen)
*c	Synchronization Signal
*d	Video Waveform

2. RADIO AND DISPLAY RECEIVER ASSEMBLY (See page )

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