Lexus ES: Front Camera Current Malfunction (C1682)
DESCRIPTION
DTC C1682 is stored if the parking assist ECU judges as a result of its self check that there is a problem with the current supplied from the front television camera assembly connected to the parking assist ECU.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1682 | Front Camera Current Malfunction | Open or short in the front television camera signal circuit |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
When "!" is displayed on the multi-display assembly after the cable is disconnected from the negative (-) battery terminal, correct the steering angle neutral point.
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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 panoramic view monitor system may be needed.
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PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - FRONT TELEVISION CAMERA ASSEMBLY) |
(a) Disconnect the N43 parking assist ECU connector.
(b) Disconnect the B5 front television camera assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N43-15 (BCB+) - B5-6 (BCB+) | Always | Below 1 Ω |
| N43-37 (BGND) - B5-5 (BGND) | Always | Below 1 Ω |
| N43-15 (BCB+) or B5-6 (BCB+) - Body ground | Always | 10 kΩ or higher |
| N43-37 (BGND) or B5-5 (BGND) - Body ground | Always | 10 kΩ or higher |
| NG |  | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 2. | CHECK PARKING ASSIST ECU (BCB+, BGND) |
| (a) Remove the parking assist ECU with the connector still connected. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N43-37 (BGND) - Body ground | Always | Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N43-15 (BCB+) - N43-37 (BGND) | Engine switch on (IG) | 5.5 to 7.05 V |
| OK | | REPLACE FRONT TELEVISION CAMERA ASSEMBLY |
| NG | | REPLACE PARKING ASSIST ECU |
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