DESCRIPTION
DTC C1622 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 No. | Detection Item | DTC Detection Condition | Trouble Area |
---|---|---|---|
C1622 | Back Camera Feedback Malfunction | Open or short in the rear television camera signal circuit |
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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PROCEDURE
1. | CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - REAR TELEVISION CAMERA ASSEMBLY) |
(a) Disconnect the J158 parking assist ECU connector.
(b) Disconnect the Z11 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 |
---|---|---|
J158-33 (CB+) - Z11-6 (CB+) | Always | Below 1 Ω |
J158-29 (CV+) - Z11-3 (CV+) | Always | Below 1 Ω |
J158-30 (CV-) - Z11-2 (CV-) | Always | Below 1 Ω |
J158-32 (CGND) - Z11-5 (CGND) | Always | Below 1 Ω |
J158-31 (SGND) - Body ground | Always | Below 1 Ω |
J158-33 (CB+) or Z11-6 (CB+) - Body ground | Always | 10 kΩ or higher |
J158-29 (CV+) or Z11-3 (CV+) - Body ground | Always | 10 kΩ or higher |
J158-30 (CV-) or Z11-2 (CV-) - Body ground | Always | 10 kΩ or higher |
J158-32 (CGND) or Z11-5 (CGND) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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2. | CHECK PARKING ASSIST ECU (CV-, CGND) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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NG | ![]() | REPLACE PARKING ASSIST ECU |
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3. | CHECK PARKING ASSIST ECU (CB+, CGND) |
(a) Connect the J158 parking assist ECU connector. |
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(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Switch Condition | Specified Condition |
---|---|---|
J158-33 (CB+) - J158-32 (CGND) | Engine switch on (IG) | 5.5 to 7.05 V |
NG | ![]() | REPLACE PARKING ASSIST ECU |
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4. | CHECK REAR TELEVISION CAMERA ASSEMBLY (CV+, CGND) |
(a) Connect the Z11 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 parking assist ECU with the connector connected.
*a | Component with harness connected (Parking Assist ECU) | *b | Waveform 1 |
*c | Waveform 2 | *d | Synchronization Signal |
*e | Video Waveform | - | - |
Item | Content |
---|---|
Terminal No. (Symbol) | J158-29 (CV+) - J158-32 (CGND) |
Tool Setting | 200 mV/DIV., 50 μs./DIV. |
Condition |
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HINT:
OK:
Waveform is similar to that shown in the illustration.
OK | ![]() | REPLACE PARKING ASSIST ECU |
NG | ![]() | REPLACE REAR TELEVISION CAMERA ASSEMBLY |
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