Dtc C1681 Front Camera Feedback Malfunction
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - FRONT TELEVISION CAMERA ASSEMBLY)
CHECK PARKING ASSIST ECU (BCV-, BGND)
CHECK PARKING ASSIST ECU (BCB+, BGND)
CHECK FRONT TELEVISION CAMERA ASSEMBLY (BCV+, BGND)
DTC C1681 Front Camera Feedback Malfunction |
DESCRIPTION
DTC C1681 is stored if the parking assist ECU judges as a result of ifs self check that a synchronization problem is occurring in the image signal sent from the front television camera assembly to the parking assist ECU.DTC Code
| DTC Detection Condition
| Trouble Area
|
C1681
| Front television camera power supply failure
| - Harness or connector
- Front television camera assembly
- Parking assist ECU
|
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- When "!" mark is displayed on the multi-display after the cable is disconnected from the negative (-) battery terminal, 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 multi-terrain monitor system may be needed (Click here).
| 1.CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - FRONT TELEVISION CAMERA ASSEMBLY) |
Disconnect the F76 parking assist ECU connector.
Disconnect the A71 front television camera assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
F76-36 (BCV-) - A71-2 (BCV-)
| Always
| Below 1 Ω
|
F76-12 (BCV+) - A71-3 (BCV+)
| Always
| Below 1 Ω
|
F76-35 (BGND) - A71-5 (BGND)
| Always
| Below 1 Ω
|
F76-11 (BCB+) - A71-6 (BCB+)
| Always
| Always
|
F76-34 (SGND) - Body ground
| Always
| Always
|
F76-36 (BCV-) - Body ground
| Always
| 10 kΩ or higher
|
F76-12 (BCV+) - Body ground
| Always
| 10 kΩ or higher
|
F76-35 (BGND) - Body ground
| Always
| 10 kΩ or higher
|
F76-11 (BCB+) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 2.CHECK PARKING ASSIST ECU (BCV-, BGND) |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
35 (BGND) - Body ground
| Always
| Below 1 Ω
|
36 (BCV-) - Body ground
| Always
| Below 1 Ω
|
Text in Illustration*a
| Component without harness connected
(Parking Assist ECU)
|
| 3.CHECK PARKING ASSIST ECU (BCB+, BGND) |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
F76-35 (BGND) - Body ground
| Always
| Below 1 Ω
|
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
F76-11 (BCB+) - F76-35 (BGND)
| Engine switch on (IG)
| 5.5 to 7.05 V
|
Text in Illustration*a
| Component with harness connected
(Parking Assist ECU)
|
| 4.CHECK FRONT TELEVISION CAMERA ASSEMBLY (BCV+, BGND) |
Check the ware form of the front television camera assembly using an oscilloscope.
Text in Illustration*a
| Component with harness connected
(Parking Assist ECU)
| *b
| Waveform A
|
*c
| Waveform B
| *d
| Synchronization Signal
|
*e
| Video Waveform
| -
| -
|
- HINT:
- The video waveform changes according to the image sent by the front television camera assembly.
Item
| Content
|
Terminal No. (Symbol)
| F76-12 (BCV+) - F76-35 (BGND)
|
Tool Setting
| 200 mV/DIV., 50 μsec./DIV.
|
Condition
| - Waveform A: Engine switch on (IG), main switch assembly (multi-terrain monitor main switch) on and camera lens is not covered, displaying an image
- Waveform B: Engine switch on (IG), main switch assembly (multi-terrain monitor main switch) on and camera lens is covered, blacking out the screen
|
- OK:
- Waveform is as shown in the illustration.
| | REPLACE FRONT TELEVISION CAMERA ASSEMBLY (Click here) |
|
|
