Dtc C1622 Open Or Short Circuit In Back Camera Signal
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - REAR TELEVISION CAMERA AND BODY GROUND)
CHECK PARKING ASSIST ECU (CB+, CGND)
CHECK REAR TELEVISION CAMERA ASSEMBLY (CV+, CGND)
DTC C1622 Open or Short Circuit in Back Camera Signal |
DESCRIPTION
This DTC is stored if the parking assist ECU judges as a result of its self check that the signals or signal lines between the parking assist ECU and the rear television camera assembly are not normal.DTC Code
| DTC Detection Condition
| Trouble Area
|
C1622
| An open or short in the rear television camera signal circuit
| - Harness or connector
- Rear television camera assembly
- Parking assist ECU
|
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- When "System initializing" is displayed on the parking assist ECU after the battery terminal disconnected, correct the steering angle neutral point (Click here).
- 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 (w/ Side Monitor System) may be needed (Click here).
| 1.CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - REAR TELEVISION CAMERA AND BODY GROUND) |
Disconnect the F75 and F76 parking assist ECU connectors.
Disconnect the S5 rear television camera assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
F76-38 (CV-) - S5-1 (CV-)
| Always
| Below 1 Ω
|
F76-15 (CV+) - S5-2 (CV+)
| Always
| Below 1 Ω
|
F76-14 (CB+) - S5-4 (CB+)
| Always
| Below 1 Ω
|
F76-37 (CGND) - S5-3 (CGND)
| Always
| Below 1 Ω
|
F75-4 (GND1) - Body ground
| Always
| Below 1 Ω
|
F76-38 (CV-) - Body ground
| Always
| 10 kΩ or higher
|
F76-15 (CV+) - Body ground
| Always
| 10 kΩ or higher
|
F76-14 (CB+) - Body ground
| Always
| 10 kΩ or higher
|
F76-37 (CGND) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 2.CHECK PARKING ASSIST ECU (CB+, CGND) |
Reconnect the F75 and F76 parking assist ECU connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
F76-37 (CGND) - Body ground
| Always
| Below 1 Ω
|
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Condition
| Specified Condition
|
F76-14 (CB+) - F76-37 (CGND)
| Engine switch on (IG), shift lever in R
| 5.5 to 7.05 V
|
Text in Illustration*a
| Component with harness connected
(Parking Assist ECU)
|
| 3.CHECK REAR TELEVISION CAMERA ASSEMBLY (CV+, CGND) |
Reconnect the S5 rear television camera assembly connector.
Text in Illustration*a
| Component with harness connected
(Parking Assist ECU)
| *b
| Waveform A
|
*c
| Waveform B
| *d
| Synchronization Signal
|
*e
| Video Waveform
| -
| -
|
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 multi-media module receiver assembly with the connector connected.
- The video waveform changes according to the image sent by the rear television camera assembly.
Item
| Content
|
Terminal No. (Symbol)
| F76-15 (CV+) - F76-37 (CGND)
|
Tool Setting
| 200 mV/DIV., 50 μsec./DIV.
|
Condition
| - Waveform A: Engine switch on (IG), shift lever in R and camera lens is not covered, displaying an image
- Waveform B: Engine switch on (IG), shift lever in R and camera lens is covered, blacking out the screen
|
- OK:
- Waveform is as shown in the illustration.
| | REPLACE REAR TELEVISION CAMERA ASSEMBLY (Click here) |
|
|
