DESCRIPTION
This is the display signal circuit between the navigation receiver assembly and the television camera assembly.
WIRING DIAGRAM
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY) |
(a) Disconnect the G38 navigation receiver assembly connector.
(b) Disconnect the Y2 rear television camera assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G38-11 (CA+) - Y2-6 (CB+) |
Always |
Below 1 Ω |
G38-12 (V+) - Y2-3 (CV+) |
Always |
Below 1 Ω |
G38-23 (CGND) - Y2-5 (CGND) |
Always |
Below 1 Ω |
G38-24 (V-) - Y2-2 (CV-) |
Always |
Below 1 Ω |
G38-11 (CA+) - Body ground |
Always |
10 kΩ or higher |
G38-12 (V+) - Body ground |
Always |
10 kΩ or higher |
G38-23 (CGND) - Body ground |
Always |
10 kΩ or higher |
G38-24 (V-) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
CHECK NAVIGATION RECEIVER ASSEMBLY |
(a) Reconnect the G38 navigation receiver assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G38-23 (CGND) - Body ground |
Always |
Below 1 Ω |
G38-24 (V-) - Body ground |
Always |
Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
G38-11 (CA+) - G38-23 (CGND) |
Ignition switch ACC |
5.5 to 7.05 V |
*a |
Component with harness connected (Navigation Receiver Assembly) |
NG | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
3. |
CHECK REAR TELEVISION CAMERA ASSEMBLY |
(a) Reconnect the Y2 rear television camera assembly connector.
(b) Check the waveform of the rear television camera assembly using an oscilloscope.
HINT:
A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the navigation receiver assembly with the connector connected.
*a |
Component with harness connected (Navigation Receiver Assembly) |
*b |
Waveform 1 (under normal conditions) |
*c |
Waveform 2 (camera lens is covered, blacking out the screen) |
*d |
Synchronized Signal |
*e |
Video Waveform |
- |
- |
OK:
Waveform is as shown in the illustration.
Item |
Content |
---|---|
Terminal No. (Symbol) |
G38-12 (V+) - G38-24 (V-) |
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.
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() |
REPLACE REAR TELEVISION CAMERA ASSEMBLY |
Data List / Active Test
DATA LIST / ACTIVE TEST
1. 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 part
is faulty or not.
HINT:
Using the T ...
Reassembly
REASSEMBLY
PROCEDURE
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