C1621

PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM: C1621, C1622: Back Camera Power Supply Failure


DESCRIPTION

These DTCs are stored if the parking assist ECU judges that the signals or signal lines between the parking assist ECU and the rear television camera assembly are not normal as a result of its self check.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
- When "System initializing" is displayed on the multi-display after disconnecting the cable from the negative (-) auxiliary battery terminal, correct the steering angle neutral point Initialization.
- 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 Calibration.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - REAR TELEVISION CAMERA)

(a) Disconnect the H8 connector from the parking assist ECU.

(b) Disconnect the V8 connector from the rear television camera assembly.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. CHECK PARKING ASSIST ECU (CV-, CGND)

(a) Reconnect the H8 connector to the parking assist ECU.





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





NG -- REPLACE PARKING ASSIST ECU Removal
OK -- Continue to next step.

3. CHECK REAR TELEVISION CAMERA ASSEMBLY (CB+, CGND)

(a) Disconnect the V8 connector from the rear television camera assembly.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:





NG -- REPLACE PARKING ASSIST ECU Removal
OK -- Continue to next step.

4. CHECK PARKING ASSIST ECU (CV+, GND1)

(a) Reconnect the V8 connector to the rear television camera assembly.

(b) Reconnect the H9 connector to the parking assist ECU.





Text in Illustration





(c) 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 parking assist ECU with the connector connected.

OK:

Waveform is as shown in the illustration.





HINT
The video waveform changes according to the image sent by the rear television camera assembly.

Text in Illustration





NG -- REPLACE REAR TELEVISION CAMERA ASSEMBLY Removal

OK -- REPLACE PARKING ASSIST ECU Removal