Toyota 4Runner manuals

Toyota 4Runner: 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

(c) Reconnect the Y2 rear television camera assembly connector.

(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

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

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