DTC C1688 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 television camera assembly, front television camera assembly, side television camera assembly RH or side television camera assembly LH connected to the parking assist ECU.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1688 | Camera Supply Voltage Malfunction (Back or Front or RH Side or LH Side) | Rear television camera, front television camera, side television camera RH or side television camera LH power supply failure | ·
Harness or connector ·
Television camera assembly ·
Front television camera assembly ·
Side television camera assembly RH ·
Outer rear view mirror assembly RH ·
Side television camera assembly LH ·
Outer rear view mirror assembly LH ·
Television camera wire ·
Parking assist ECU |
When the "!" mark is displayed on the multi-display after the cable is disconnected from the negative (-) 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 panoramic view monitor system may be needed.
| *a | Front view of television camera wire
(to Front Television Camera Assembly) |
| *b | Front view of television camera wire
(to Vehicle Harness Connector) |
Remove the television camera wire.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A52-6 (BCB+) - 6 (BCB+) | Always | Below 1 Ω |
| A52-5 (BGND) - 5 (BGND) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N151 parking assist ECU connector.
Disconnect the A52 front television camera assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N151-7 (BCB+) - A52-6 (BCB+) | Always | Below 1 Ω |
| N151-24 (BGND) - A52-5 (BGND) | Always | Below 1 Ω |
| N151-7 (BCB+) or A52-6 (BCB+) - Body ground | Always | 10 kΩ or higher |
| N151-24 (BGND) or A52-5 (BGND) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N151 parking assist ECU connector.
Disconnect the i6 television camera assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N151-8 (CB+) - i6-6 (CB+) | Always | Below 1 Ω |
| N151-25 (CGND) - i6-5 (CGND) | Always | Below 1 Ω |
| N151-8 (CB+) or i6-6 (CB+) - Body ground | Always | 10 kΩ or higher |
| N151-25 (CGND) or i6-5 (CGND) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N151 parking assist ECU connector.
Disconnect the R21 outer rear view mirror assembly RH connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N151-6 (RCB+) - R21-5 (RCB+) | Always | Below 1 Ω |
| N151-23 (RGND) - R21-13 (RGND) | Always | Below 1 Ω |
| N151-6 (RCB+) or R21-5 (RCB+) - Body ground | Always | 10 kΩ or higher |
| N151-23 (RGND) or R21-13 (RGND) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N151 parking assist ECU connector.
Disconnect the R23 outer rear view mirror assembly LH connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N151-9 (LCB+) - R23-5 (LCB+) | Always | Below 1 Ω |
| N151-26 (LGND) - R23-13 (LGND) | Always | Below 1 Ω |
| N151-9 (LCB+) or R23-5 (LCB+) - Body ground | Always | 10 kΩ or higher |
| N151-26 (LGND) or R23-13 (LGND) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component with harness connected
(Parking Assist ECU) |
Disconnect the television camera assembly.
Disconnect the front television camera assembly.
Disconnect the outer rear view mirror assembly LH connector.
Disconnect the outer rear view mirror assembly RH connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N151-25 (CGND) - Body ground | Always | Below 1 Ω |
| N151-24 (BGND) - Body ground | Always | Below 1 Ω |
| N151-23 (RGND) - Body ground | Always | Below 1 Ω |
| N151-26 (LGND) - Body ground | Always | Below 1 Ω |
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Switch Condition | Specified Condition |
|---|---|---|
| N151-8 (CB+) - N151-25 (CGND) | Engine switch on (IG) | 5.5 to 7.05 V |
| Engine switch off | Below 1 V | |
| N151-7 (BCB+) - N151-24 (BGND) | Engine switch on (IG) | 5.5 to 7.05 V |
| Engine switch off | Below 1 V | |
| N151-6 (RCB+) - N151-23 (RGND) | Engine switch on (IG) | 5.5 to 7.05 V |
| Engine switch off | Below 1 V | |
| N151-9 (LCB+) - N151-26 (LGND) | Engine switch on (IG) | 5.5 to 7.05 V |
| Engine switch off | Below 1 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the A52 front television camera assembly connector.
Disconnect the R21 outer rear view mirror assembly RH connector.
Disconnect the R23 outer rear view mirror assembly LH connector.
Clear the DTCs.
Check for DTCs.
Operate the panoramic view monitor system, and check the condition of the rear view screen and whether DTC C1688 is output.
| Result | Proceed to |
|---|---|
| The rear view screen is displayed and DTC C1688 is not output. | A |
| The rear view screen is black and DTC C1688 is output. | B |
A
B
Disconnect the R21 outer rear view mirror assembly RH connector.
Disconnect the R23 outer rear view mirror assembly LH connector.
Clear the DTCs.
Check for DTCs.
Operate the panoramic view monitor system, and check the condition of the front view screen and whether DTC C1688 is output.
| Result | Proceed to |
|---|---|
| The front view screen is displayed and DTC C1688 is not output. | A |
| The front view screen is black and DTC C1688 is output. | B |
A
B
Disconnect the R23 outer rear view mirror assembly LH connector.
Clear the DTCs.
Check for DTCs.
Operate the panoramic view monitor system, and check the condition of the side view screen of the right side and whether DTC C1688 is output.
| Result | Proceed to |
|---|---|
| The side view screen of the right side is displayed and DTC C1688 is not output. | A |
| The side view screen of the right side is black and DTC C1688 is output. | B |
A
B
| *a | Front view of wire harness connector
(to Side Television Camera Assembly LH) |
| *b | Front view of wire harness connector
(to Outer Rear View Mirror Assembly LH) |
Disconnect the outer rear view mirror assembly LH connector.
Disconnect the side television camera assembly LH connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A-1 (CB+) - R23-5 (LCB+) | Always | Below 1 Ω |
| A-5 (GND) - R23-13 (LGND) | Always | Below 1 Ω |
| A-1 (CB+) or R23-5 (LCB+) - Body ground | Always | 10 kΩ or higher |
| A-5 (GND) or R23-13 (LGND) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Replace the side television camera assembly LH with a new or normally functioning one.
| Proceed to |
|---|
| NEXT |
NEXT
Clear the DTCs.
Check for DTCs.
DTC C1688 is not output.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Front view of wire harness connector
(to Side Television Camera Assembly RH) |
| *b | Front view of wire harness connector
(to Outer Rear View Mirror Assembly RH) |
Disconnect the side television camera assembly RH connector.
Disconnect the outer rear view mirror assembly RH connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| B-1 (CB+) - R21-5 (RCB+) | Always | Below 1 Ω |
| B-5 (GND) - R21-13 (RGND) | Always | Below 1 Ω |
| B-1 (CB+) or R21-5 (RCB+) - Body ground | Always | 10 kΩ or higher |
| B-5 (GND) or R21-13 (RGND) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Replace the side television camera assembly RH with a new or normally functioning one.
| Proceed to |
|---|
| NEXT |
NEXT
Clear the DTCs.
Check for DTCs.
DTC C1688 is not output.
| Proceed to |
|---|
| OK |
| NG |
OK
NG