Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001RE8A
Model Year Start: 2021 Model: Camry Prod Date Range: [10/2020 -           ]
Title: PARK ASSIST / MONITORING: PANORAMIC VIEW MONITOR SYSTEM: C1686; Driver Side Camera Video Sync Signal Malfunction; 2021 - 2024 MY Camry [10/2020 -        ]

DTC

C1686

Driver Side Camera Video Sync Signal Malfunction

DESCRIPTION

This DTC is stored if the television camera controller 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 television camera controller.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1686

Driver Side Camera Video Sync Signal Malfunction

Side camera feedback malfunction

  • Harness or connector
  • Television camera controller
  • Side television camera assembly LH
  • Outer rear view mirror assembly LH

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When "!" is displayed on the radio and display receiver assembly after the cable is disconnected from the negative (-) battery terminal, correct the steering angle neutral point.

    Click here 2021 - 2024 MY Camry [10/2020 -        ]; PARK ASSIST / MONITORING: PANORAMIC VIEW MONITOR SYSTEM: INITIALIZATION

  • 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 2021 - 2024 MY Camry [10/2020 -        ]; PARK ASSIST / MONITORING: PANORAMIC VIEW MONITOR SYSTEM: CALIBRATION

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs.

Chassis > Circumference Monitoring Camera Control Module > Clear DTCs

(b) Check for DTCs.

Chassis > Circumference Monitoring Camera Control Module > Trouble Codes

OK:

DTC C1686 is not output.

OK

USE SIMULATION METHOD TO CHECK 2021 MY Camry [10/2020 - 08/2021]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2022 - 2024 MY Camry [08/2021 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

NG

2.

CHECK HARNESS AND CONNECTOR (TELEVISION CAMERA CONTROLLER - OUTER REAR VIEW MIRROR ASSEMBLY LH)

(a) Disconnect the R126 television camera controller connector.

(b) Disconnect the O21 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

R126-12 (LCB+) - O21-3 (LCB+)

Always

Below 1 Ω

R126-10 (LCV+) - O21-4 (LCV+)

Always

Below 1 Ω

R126-34 (LCV-) - O21-12 (LCV-)

Always

Below 1 Ω

R126-35 (LGND) - O21-11 (LGND)

Always

Below 1 Ω

R126-12 (LCB+) or O21-3 (LCB+) - Body ground

Always

10 kΩ or higher

R126-10 (LCV+) or O21-4 (LCV+) - Body ground

Always

10 kΩ or higher

R126-34 (LCV-) or O21-12 (LCV-) - Body ground

Always

10 kΩ or higher

R126-35 (LGND) or O21-11 (LGND) - Body ground

Always

10 kΩ or higher

R126-11 (SGND) or O21-2 (SGND) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

CHECK TELEVISION CAMERA CONTROLLER (LCV-, LGND)

(a) Disconnect the R126 television camera controller connector.

*a

Component without harness connected

(Television Camera Controller)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

35 (LGND) - Body ground

Always

Below 1 Ω

34 (LCV-) - Body ground

Always

Below 1 Ω

NG

REPLACE TELEVISION CAMERA CONTROLLER

OK

4.

CHECK TELEVISION CAMERA CONTROLLER (LCB+, LGND)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

R126-35 (LGND) - Body ground

Always

Below 1 Ω

*a

Component with harness connected

(Television Camera Controller)

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

R126-12 (LCB+) - R126-35 (LGND)

Ignition switch ON

5.5 to 7.05 V

R126-12 (LCB+) - R126-35 (LGND)

Ignition switch off

Below 1 V

NG

REPLACE TELEVISION CAMERA CONTROLLER

OK

5.

CHECK SIDE TELEVISION CAMERA ASSEMBLY LH (LCV+, LGND)

(a) 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 television camera controller with the connector connected.

*a

Component with harness connected

(Television Camera Controller)

*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 ignition switch is ACC.

Measurement Condition

Item

Content

Tester Connection

R126-10 (LCV+) - R126-35 (LGND)

Tool Setting

200 mV/DIV., 50 μsec./DIV.

Condition

Ignition switch ON, panoramic view monitor switch on

OK:

Waveform is similar to that shown in illustration.

OK

REPLACE TELEVISION CAMERA CONTROLLER

NG

6.

INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH

(a) Disconnect the outer rear view mirror assembly LH connector.

*a

Front view of wire harness connector

(to Side Television Camera Assembly LH)

*b

Front view of wire harness connector

(to Vehicle Wire Harness Connector)

(b) Disconnect the side television camera assembly LH connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A-1 (LCB+) - O21-3 (LCB+)

Always

Below 1 Ω

A-5 (LCV+) - O21-4 (LCV+)

Always

Below 1 Ω

A-7 (LCV-) - O21-12 (LCV-)

Always

Below 1 Ω

A-3 (LGND) - O21-11 (LGND)

Always

Below 1 Ω

A-1 (LCB+) or O21-3 (LCB+) - Body ground

Always

10 kΩ or higher

A-5 (LCV+) or O21-4 (LCV+) - Body ground

Always

10 kΩ or higher

A-7 (LCV-) or O21-12 (LCV-) - Body ground

Always

10 kΩ or higher

A-3 (LGND) or O21-11 (LGND) - Body ground

Always

10 kΩ or higher

NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH

OK

7.

CHECK SIDE TELEVISION CAMERA ASSEMBLY LH

(a) Replace the side television camera assembly LH with a new or normally functioning one.

Click here 2021 - 2024 MY Camry [10/2020 -        ]; PARK ASSIST / MONITORING: TELEVISION CAMERA (for Side): REMOVAL

NEXT

8.

CHECK FOR DTC

(a) Clear the DTCs.

Chassis > Circumference Monitoring Camera Control Module > Clear DTCs

(b) Check for DTCs.

Chassis > Circumference Monitoring Camera Control Module > Trouble Codes

OK:

DTC C1686 is not output.

OK

END (SIDE TELEVISION CAMERA ASSEMBLY LH IS DEFECTIVE)

NG

REPLACE TELEVISION CAMERA CONTROLLER