Toyota CH-R Service Manual: Back Camera Disconnected (C1622)
DESCRIPTION
This DTC is stored if the radio and display receiver assembly judges that the signals or signal lines between the radio and display receiver assembly and the rear television camera assembly are not normal as a result of its self check.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1622 |
Back Camera Disconnected |
Open or short in the rear television camera assembly signal circuit |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the radio and display receiver assembly, always replace
it with a new one. If a radio and display receiver assembly which was installed
to another vehicle is used, the following may occur:
- A communication malfunction DTC is stored.
- The radio and display receiver assembly may not operate normally.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY) |
(a) Disconnect the F131 radio and display receiver assembly connector.
(b) Disconnect the S11 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 |
|---|---|---|
|
F131-30 (CA+) - S11-6 (CB+) |
Always |
Below 1 Ω |
|
F131-28 (V+) - S11-3 (CV+) |
Always |
Below 1 Ω |
|
F131-29 (V-) - S11-2 (CV-) |
Always |
Below 1 Ω |
|
F131-27 (CGND) - S11-5 (CGND) |
Always |
Below 1 Ω |
|
F131-26 (CSLD) - Body ground |
Always |
Below 1 Ω |
|
F131-30 (CA+) or S11-6 (CB+) - Body ground |
Always |
10 kΩ or higher |
|
F131-28 (V+) or S11-3 (CV+) - Body ground |
Always |
10 kΩ or higher |
|
F131-29 (V-) or S11-2 (CV-) - Body ground |
Always |
10 kΩ or higher |
|
F131-27 (CGND) or S11-5 (CGND) - Body ground |
Always |
10 kΩ or higher |
| NG | .gif) |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
.gif)
|
2. |
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY |
(a) Reconnect the radio and display receiver assembly connector.
|
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
F131-30 (CA+) - F131-27 (CGND) |
Ignition switch ACC |
5.5 to 7.05 V |
| NG | |
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
|
|
3. |
INSPECT REAR TELEVISION CAMERA ASSEMBLY |
(a) Reconnect the S11 rear television camera assembly connector.
(b) Using an oscilloscope, check the waveform of the rear television camera assembly.
HINT:
A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the radio and display receiver assembly with the connector connected.
OK:
Waveform is similar to that shown in the illustration.
|
Item |
Content |
|---|---|
|
Measurement terminal |
F131-28 (V+) - F129-1 (GND1) |
|
Measurement setting |
200 mV/DIV., 50 μs./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.
- The video waveform is constantly output when the ignition switch is turned to ACC.
|
*a |
Component with harness connected (Radio and Display Receiver Assembly) |
.png)
|
*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 |
| OK | |
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
| NG | |
REPLACE REAR TELEVISION CAMERA ASSEMBLY |
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Rear View Monitor System
DTC No.
Detection Item
Link
C1622
Back Camera Disconnected
...
Image from Camera for Rear View Monitor is Abnormal
DESCRIPTION
The video signal of the rear television camera assembly is transmitted to the
radio and display receiver assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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