DTC Code | DTC Name |
---|---|
C1622 | Back Camera Disconnected |
DESCRIPTION
This DTC is stored if the radio receiver assembly judges that the signals or signal lines between the television camera assembly and the multi-display 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 television camera assembly signal circuit |
|
WIRING DIAGRAM
*a | Radio Receiver Assembly |
*b | Multi-display Assembly |
*c | Television Camera Assembly |
*d | AVC-LAN Communication Line |
CAUTION / NOTICE / HINT
Note
If the cable was disconnected from and reconnected to the negative (-) auxiliary battery terminal, the estimated course lines may not be displayed on the image of the area behind the vehicle. In this case, perform "Correct the Steering Angle Neutral Point".
Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the parking assist monitor system may be needed.
When replacing the radio receiver assembly, always replace it with a new one.
If a radio receiver assembly which was installed to another vehicle is used, the following may occur:
A communication malfunction DTC may be stored.
The radio receiver assembly may not operate normally.
Tech Tips
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.
PROCEDURE
CHECK HARNESS AND CONNECTOR (TELEVISION CAMERA ASSEMBLY - MULTI-DISPLAY ASSEMBLY)
Disconnect the Y27 television camera assembly connector.
Disconnect the I42 multi-display assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK MULTI-DISPLAY ASSEMBLY (CA+, CGND)
*a | Component with harness connected (Multi-display Assembly) |
Remove the multi-display assembly with the connector still connected.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPLACE MULTI-DISPLAY ASSEMBLY Click here |
OK |
CHECK TELEVISION CAMERA ASSEMBLY
*a | Component with harness connected (Multi-display Assembly) |
*b | Waveform 1 |
*c | Waveform 2 | *d | Synchronization Signal |
*e | Video Waveform | - | - |
Remove the multi-display assembly with the connector still connected.
Check the waveform of the television camera assembly using an oscilloscope.
Item | Content |
Measurement terminal | I42-8 (V+) - I42-9 (V-) |
Measurement setting | 200 mV/DIV., 50 μsec./DIV. |
Condition | Waveform 1: Power switch on (READY), shift position in R, camera lens is not covered, displaying an image. Waveform 2: Power switch on (READY), shift position in R, camera lens is covered, blacking out the screen. |
Tech Tips
The video waveform changes according to the image sent by the television camera assembly.
The video waveform is constantly output when the power switch is on (ACC).
OK |
---|
Waveform is as shown in the illustration. |
Result | |||
---|---|---|---|
|
NG |
REPLACE TELEVISION CAMERA ASSEMBLY Click here |
OK |
CHECK MULTI-DISPLAY ASSEMBLY
Replace the multi-display assembly with a new or known good one.
Clear the DTCs.
Check for DTCs and check that no DTCs are output.
Result | ||||||
---|---|---|---|---|---|---|
|
A |
END |
B |
REPLACE RADIO RECEIVER ASSEMBLY Click here |