Terminals Of Ecu

WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

CHECK TELEVISION CAMERA ASSEMBLY

Fig 1: Identifying X1 Camera Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the X1 camera connector.

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

X1 CAMERA CONNECTOR VOLTAGE AND RESISTANCE SPECIFICATION

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
X1-4 (CGND)-Body ground	W - Body ground	Ground	Always	Below 1 Ω
X1-3 (CB+) - X1-4 (CGND)	R-W	Power source	Ignition switch ON, shift lever R position	5.5 to 7.05 V

If the result is not as specified, there may be a malfunction on the wire harness side.

Reconnect the X1 camera connector.

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

X1 CAMERA CONNECTOR WAVEFORM REFERENCE

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
X1-1 (CV+) - X1-2 (CV-)	B - Shielded	Display signal	Ignition switch ON, shift lever R position	Waveform

If the result is not as specified, the camera may have a malfunction.

Using an oscilloscope, check the waveform.

Waveform (Reference)

OSCILLOSCOPE WAVEFORM REFERENCE

Item	Content
Terminal No. (Symbols)	X1-1 (CV+) - X1-2 (CV-)
Tool Setting	0.2 V/DIV., 0.2 μsec./DIV.
Condition	Ignition switch ON, shift lever R position

Fig 2: Oscilloscope Waveform

CHECK NAVIGATION RECEIVER ASSEMBLY (See TERMINALS OF ECU )