DESCRIPTION This DTC is
stored if the parking assist ECU judges as a result of its self check
that a synchronization problem is occurring in the image signal sent
from the driver side television camera assembly to the parking assist
ECU. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
DTC Output from | |
C1686 | Driver Side Camera Video Sync Signal Malfunction |
Side camera feedback malfunction |
- Harness or connector
- Parking assist ECU
- Side television camera assembly LH
- Outer rear view mirror assembly LH
| Parking assist ECU | WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE:
- When "!" is displayed on the radio and display receiver assembly after
the cable is disconnected from the negative (-) auxiliary battery
terminal, correct the steering angle neutral point.
- 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.
Click here 
PROCEDURE (a) Clear the DTCs. Chassis > Panoramic View Monitor > Clear DTCs
(b) Check for DTCs. Chassis > Panoramic View Monitor > Trouble Codes
OK: DTC C1686 is not output.
| OK |
 | USE SIMULATION METHOD TO CHECK |
|
NG |
 | |
| 2. |
CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - OUTER REAR VIEW MIRROR ASSEMBLY LH) |
(a) Disconnect the K36 parking assist ECU connector. (b) Disconnect the I29 outer rear view mirror assembly LH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
K36-12 (LCB+) - I29-14 (LCB+) |
Always | Below 1 Ω | |
K36-10 (LCV+) - I29-15 (LCV+) |
Always | Below 1 Ω | |
K36-11 (LCV-) - I29-16 (LCV-) |
Always | Below 1 Ω | |
K36-24 (LGND) - I29-17 (LGND) |
Always | Below 1 Ω | |
K36-23 (SGND) - I29-18 (SGND) |
Always | Below 1 Ω | |
K36-12 (LCB+) or I29-14 (LCB+) - Body ground |
Always | 10 kΩ or higher | |
K36-10 (LCV+) or I29-15 (LCV+) - Body ground |
Always | 10 kΩ or higher | |
K36-11 (LCV-) or I29-16 (LCV-) - Body ground |
Always | 10 kΩ or higher | |
K36-24 (LGND) or I29-17 (LGND) - Body ground |
Always | 10 kΩ or higher | |
K36-23 (SGND) or I29-18 (SGND) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 3. |
CHECK PARKING ASSIST ECU (LCV-, LGND) |
(a) Disconnect the K36 parking assist ECU connector.
| (b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
24 (LGND) - Body ground |
Always | Below 1 Ω | |
11 (LCV-) - Body ground |
Always | Below 1 Ω | |
 |
|
*a | Component without harness connected
(Parking Assist ECU) | | |
| NG |
| REPLACE PARKING ASSIST ECU |
|
OK | |
| |
| 4. |
CHECK PARKING ASSIST ECU (LCB+, LGND) |
| (a) Remove the parking assist ECU with the connector still connected. |
 |
|
*a | Component with harness connected
(Parking Assist ECU) | | |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
K36-24 (LGND) - 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 | |
K36-12 (LCB+) - K36-24 (LGND) |
Power switch on (ACC) |
5.5 to 7.05 V |
| NG |
| REPLACE PARKING ASSIST ECU |
|
OK | |
| |
| 5. |
CHECK SIDE TELEVISION CAMERA ASSEMBLY LH (LCV+, LGND) |
(a) Remove the parking assist ECU with the connector still connected. (b) Using an oscilloscope, check the waveform of the side television camera assembly LH.
HINT: A
waterproof connector is used for the side television camera assembly
LH. Therefore, inspect the waveform at the parking assist ECU with the
connector connected. 
|
*a | Component with harness connected
(Parking Assist ECU) | *b |
Waveform 1 (camera lens not covered, displaying an image) | |
*c | Waveform 2 (camera lens covered, blacking out the screen) |
*d | Synchronization Signal | |
*e | Video Waveform |
- | - |
HINT:
- The video waveform changes according to the image sent by the side television camera assembly LH.
- The video waveform is constantly output when the power switch is on (ACC).
Measurement Condition |
Item | Content | |
Tester Connection | K36-10 (LCV+) - K36-24 (LGND) | |
Tool Setting | 200 mV/DIV., 50 μsec./DIV. | |
Condition | Power switch on (IG), panoramic view monitor system operating |
OK: Waveform is similar to that shown in illustration.
| OK |
| REPLACE PARKING ASSIST ECU |
|
NG | |
| |
| 6. |
REPLACE SIDE TELEVISION CAMERA ASSEMBLY LH |
(a) Replace the side television camera assembly LH with a new or normally functioning one.
Click here
|
NEXT | |
| |
(a) Clear the DTCs. Chassis > Panoramic View Monitor > Clear DTCs
(b) Check for DTCs. Chassis > Panoramic View Monitor > Trouble Codes
OK: DTC C1686 is not output.
| OK |
| END (SIDE TELEVISION CAMERA ASSEMBLY LH IS DEFECTIVE) |
| NG |
| REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH | | 
