Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM10000000163YU
Model Year Start: 2018 Model: Camry HV Prod Date Range: [07/2017 - 10/2020]
Title: PARK ASSIST / MONITORING: PANORAMIC VIEW MONITOR SYSTEM: C1681; Front Camera Feedback Malfunction; 2018 - 2020 MY Camry HV [07/2017 - 10/2020]

DTC

C1681

Front Camera Feedback Malfunction

DESCRIPTION

DTC C1681 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 front television camera assembly to the television camera controller.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

C1681

Front Camera Feedback Malfunction

Front television camera power supply failure

  • Harness or connector
  • Front television camera assembly
  • Television camera controller

Panoramic View Monitor

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.

    Click here 2018 - 2020 MY Camry HV [07/2017 - 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 panoramic view monitor system may be needed.

    Click here 2018 - 2020 MY Camry HV [07/2017 - 10/2020]; PARK ASSIST / MONITORING: PANORAMIC VIEW MONITOR SYSTEM: CALIBRATION

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (TELEVISION CAMERA CONTROLLER - FRONT TELEVISION CAMERA ASSEMBLY)

(a) Disconnect the R42 television camera controller connector.

(b) Disconnect the B7 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

R42-15 (BCB+) - B7-6 (BCB+)

Always

Below 1 Ω

R42-13 (BCV+) - B7-3 (BCV+)

Always

Below 1 Ω

R42-14 (BCV-) - B7-2 (BCV-)

Always

Below 1 Ω

R42-27 (BGND) - B7-5 (BGND)

Always

Below 1 Ω

R42-25 (SGND) - Body ground

Always

10 kΩ or higher

R42-15 (BCB+) or B7-6 (BCB+) - Body ground

Always

10 kΩ or higher

R42-13 (BCV+) or B7-3 (BCV+) - Body ground

Always

10 kΩ or higher

R42-14 (BCV-) or B7-2 (BCV-) - Body ground

Always

10 kΩ or higher

R42-27 (BGND) or B7-5 (BGND) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

CHECK TELEVISION CAMERA CONTROLLER (BCV-, BGND)

(a) Disconnect the R42 television camera controller connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

27 (BGND) - Body ground

Always

Below 1 Ω

14 (BCV-) - Body ground

Always

Below 1 Ω

*a

Component without harness connected

(Television Camera Controller)

NG

REPLACE TELEVISION CAMERA CONTROLLER

OK

3.

CHECK TELEVISION CAMERA CONTROLLER (BCB+, BGND)

(a) Remove the television camera controller with the connector still connected.

*a

Component with 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

R42-27 (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

R42-15 (BCB+) - R42-27 (BGND)

Power switch on (ACC)

5.5 to 7.05 V

NG

REPLACE TELEVISION CAMERA CONTROLLER

OK

4.

CHECK FRONT TELEVISION CAMERA ASSEMBLY (BCV+, BGND)

(a) Remove the television camera controller with the connector still connected.

(b) Using an oscilloscope, check the waveform of the front television camera assembly.

HINT:

A waterproof connector is used for the front television camera assembly. 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 front television camera assembly.
  • The video waveform is constantly output when the power switch is on (ACC).

Measurement Condition

Item

Content

Terminal No. (Symbol)

R42-13 (BCV+) - R42-27 (BGND)

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 the illustration.

OK

REPLACE TELEVISION CAMERA CONTROLLER

NG

REPLACE FRONT TELEVISION CAMERA ASSEMBLY