Toyota Venza manuals

Toyota Venza: Back Camera Disconnected (C1622)

DESCRIPTION

This DTC is stored if the navigation receiver assembly*1 or radio and display receiver assembly*2 judges that the signals or signal lines between the navigation receiver assembly*1 or radio and display receiver assembly*2, and the rear television camera assembly are not normal as a result of its self check.

DTC No.

DTC Detection Condition

Trouble Area

C1622

Open or short in the rear television camera assembly signal circuit

  • Harness or connector
  • Rear television camera assembly
  • Navigation receiver assembly*1
  • Radio and display receiver assembly*2

*1: for Navigation System

*2: for Audio and Visual System

WIRING DIAGRAM


PROCEDURE

1.

CONFIRM MODEL

(a) Choose the model to be inspected.

Result

Proceed to

for Navigation System

A

for Audio and Visual System

B


B

GO TO STEP 5


A

2.

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY)

(a) Disconnect the E51 navigation receiver assembly connector.

(b) Disconnect the R21 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

E51-11 (CA+) - R21-6 (CB+)

Always

Below 1 Ω

E51-12 (V+) - R21-3 (CV+)

Always

Below 1 Ω

E51-24 (V-) - R21-2 (CV-)

Always

Below 1 Ω

E51-23 (CGND) - R21-5 (CGND)

Always

Below 1 Ω

E51-11 (CA+) - Body ground

Always

10 kΩ or higher

E51-12 (V+) - Body ground

Always

10 kΩ or higher

E51-24 (V-) - Body ground

Always

10 kΩ or higher

E51-23 (CGND) - Body ground

Always

10 kΩ or higher


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

3.

INSPECT NAVIGATION RECEIVER ASSEMBLY

(a) Reconnect the E51 navigation receiver assembly connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

E51-11 (CA+) - E51-23 (CGND)

Ignition switch ACC

5.5 to 7.05 V

E51-24 (V-) - Body ground

Always

Below 1 V

E51-23 (CGND) - Body ground

Always

Below 1 V

Text in Illustration

*a

Component with harness connected

(Navigation Receiver Assembly)



NG

REPLACE NAVIGATION RECEIVER ASSEMBLY


OK

4.

INSPECT REAR TELEVISION CAMERA ASSEMBLY

(a) Reconnect the R21 rear television camera assembly connector.

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

Text in Illustration

*a

Component with harness connected

(Navigation Receiver Assembly)


HINT:

A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the navigation receiver assembly with the connector connected.

OK:

Waveform is similar to that shown in the illustration.

Item

Content

Measurement terminal

E51-12 (V+) - E38-7 (GND1)

Measurement setting

200 mV/DIV., 50 μs./DIV.

Condition

Ignition switch ON, shift lever in R

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.
Text in Illustration

*a

Waveform 1 (camera lens is not covered, displaying an image)

*b

Waveform 2 (camera lens is covered, blacking out the screen)

*c

Synchronization Signal

*d

Video Waveform



OK

REPLACE NAVIGATION RECEIVER ASSEMBLY


NG

REPLACE REAR TELEVISION CAMERA ASSEMBLY

5.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY)

(a) Disconnect the E52 radio and display receiver assembly connector.

(b) Disconnect the R21 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

E52-11 (CA+) - R21-6 (CB+)

Always

Below 1 Ω

E52-12 (V+) - R21-3 (CV+)

Always

Below 1 Ω

E52-24 (V-) - R21-2 (CV-)

Always

Below 1 Ω

E52-23 (CGND) - R21-5 (CGND)

Always

Below 1 Ω

E52-11 (CA+) - Body ground

Always

10 kΩ or higher

E52-12 (V+) - Body ground

Always

10 kΩ or higher

E52-24 (V-) - Body ground

Always

10 kΩ or higher

E52-23 (CGND) - Body ground

Always

10 kΩ or higher


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

6.

INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY

(a) Reconnect the E52 radio and display receiver assembly connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

E52-11 (CA+) - E52-23 (CGND)

Ignition switch ACC

5.5 to 7.05 V

E52-24 (V-) - Body ground

Always

Below 1 V

E52-23 (CGND) - Body ground

Always

Below 1 V

Text in Illustration

*a

Component with harness connected

(Radio and Display Receiver Assembly)



NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY


OK

7.

INSPECT REAR TELEVISION CAMERA ASSEMBLY

(a) Reconnect the R21 rear television camera assembly connector.

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

Text in Illustration

*a

Component with harness connected

(Radio and Display Receiver Assembly)


HINT:

A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the radio and display receiver assembly with the connector connected.

OK:

Waveform is similar to that shown in the illustration.

Item

Content

Measurement terminal

E52-12 (V+) - E4-7 (GND1)

Measurement setting

200 mV/DIV., 50 μs./DIV.

Condition

Ignition switch ON, shift lever in R

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.
Text in Illustration

*a

Waveform 1 (camera lens is not covered, displaying an image)

*b

Waveform 2 (camera lens is covered, blacking out the screen)

*c

Synchronization Signal

*d

Video Waveform



OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY


NG

REPLACE REAR TELEVISION CAMERA ASSEMBLY

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