| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001HBBX |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM (for HV Model (Dual Knob Radio and Display Receiver)): C1622; Back Camera Disconnected; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] | ||
|
DTC |
C1622 |
Back Camera Disconnected |
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
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY) |
(a) Disconnect the I56 radio and display receiver assembly connector.
(b) Disconnect the O115 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 |
|---|---|---|
|
I56-30 (CA+) - O115-6 (CB+) |
Always |
Below 1 Ω |
|
I56-28 (V+) - O115-3 (CV+) |
Always |
Below 1 Ω |
|
I56-29 (V-) - O115-2 (CV-) |
Always |
Below 1 Ω |
|
I56-27 (CGND) - O115-5 (CGND) |
Always |
Below 1 Ω |
|
I56-26 (CSLD) - Body ground |
Always |
Below 1 Ω |
|
I56-30 (CA+) or O115-6 (CB+) - Body ground |
Always |
10 kΩ or higher |
|
I56-28 (V+) or O115-3 (CV+) - Body ground |
Always |
10 kΩ or higher |
|
I56-29 (V-) or O115-2 (CV-) - Body ground |
Always |
10 kΩ or higher |
|
I56-27 (CGND) or O115-5 (CGND) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
2. |
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY |
(a) Reconnect the I56 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 |
Condition |
Specified Condition |
|---|---|---|
|
I56-30 (CA+) - I56-27 (CGND) |
Power switch on (ACC) |
5.5 to 7.05 V |
| NG |
|
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY
|
![2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; AUDIO / VIDEO: RADIO RECEIVER: REMOVAL](/t3Portal/stylegraphics/info.gif)
|
|
3. |
INSPECT REAR TELEVISION CAMERA ASSEMBLY |
(a) Reconnect the O115 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 |
I56-28 (V+) - I55-1 (GND1) |
|
Measurement setting |
200 mV/DIV., 50 μs./DIV. |
|
Condition |
Power switch on (IG), 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 power switch is on (ACC).
|
*a |
Component with harness connected (Radio and Display Receiver Assembly) |
|
*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 |
|
|
|