Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001T5IQ
Model Year Start: 2021 Model: Camry HV Prod Date Range: [10/2020 -           ]
Title: PARK ASSIST / MONITORING: PANORAMIC VIEW MONITOR SYSTEM: C1622; Open or Short Circuit in Back Camera Signal; 2021 - 2024 MY Camry HV [10/2020 -        ]

DTC

C1622

Open or Short Circuit in Back Camera Signal

DESCRIPTION

DTC C1622 is stored if the television camera controller judges as a result of its self check that the signals or signal lines between the television camera controller and rear television camera assembly are not normal.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1622

Open or Short Circuit in Back Camera Signal

Open or short in the rear television camera signal circuit
  • Harness or connector
  • Rear television camera assembly
  • Television camera controller

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

  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (ACC POWER SUPPLY - REAR TELEVISION CAMERA ASSEMBLY)

(a) Disconnect the m1 rear television camera assembly connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

m1-6 (CB+) - Body ground

Ignition switch on (ACC)

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

2.

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

(a) Disconnect the R126 television camera controller connector.

(b) Disconnect the m1 rear television camera assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R126-29 (CV+) - m1-3 (CV+)

Always

Below 1 Ω

R126-30 (CV-) - m1-2 (CV-)

Always

Below 1 Ω

R126-32 (CGND) - m1-5 (CGND)

Always

Below 1 Ω

R126-29 (CV+) or m1-3 (CV+) - Body ground

Always

10 kΩ or higher

R126-30 (CV-) or m1-2 (CV-) - Body ground

Always

10 kΩ or higher

R126-32 (CGND) or m1-5 (CGND) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

CHECK TELEVISION CAMERA CONTROLLER (CV-, CGND)

(a) Disconnect the R126 television camera controller connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

30 (CV-) - Body ground

Always

Below 1 Ω

32 (CGND) - Body ground

Always

Below 1 Ω

*a

Component without harness connected

(Television Camera Controller)
NG

REPLACE TELEVISION CAMERA CONTROLLER

OK

4.

CHECK TELEVISION CAMERA CONTROLLER (CGND)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R126-32 (CGND) - Body ground

Always

Below 1 Ω

*a

Component with harness connected

(Television Camera Controller)
NG

REPLACE TELEVISION CAMERA CONTROLLER

OK

5.

CHECK REAR TELEVISION CAMERA ASSEMBLY (CV+, CGND)

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

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

HINT:

A waterproof connector is used for the rear 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 rear television camera assembly.
  • The video waveform is constantly output when the ignition switch is turned to ACC.

Measurement Condition

Item

Content

Terminal No. (Symbol)

R126-29 (CV+) - R126-32 (CGND)

Tool Setting

200 mV/DIV., 50 μsec./DIV.

Condition

Ignition switch ON, panoramic view monitor system operating

OK:

Waveform is similar to that shown in the illustration.

OK

REPLACE TELEVISION CAMERA CONTROLLER

NG

REPLACE REAR TELEVISION CAMERA ASSEMBLY