Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VJ8W
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 - 11/2017]
Title: PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM: C1622; Open or Short Circuit in Back Camera Signal; 2016 - 2017 MY Sienna [12/2015 - 11/2017]

DTC

C1622

Open or Short Circuit in Back Camera Signal

DESCRIPTION

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

DTC Code

DTC Detection Condition

Trouble Area

C1622

Open or Short Circuit in rear television camera signal
  • Harness or connector
  • Rear television camera assembly
  • Radio and display receiver assembly*1
  • Navigation receiver assembly*2
  • *1: w/o Navigation System
  • *2: w/ Navigation System

WIRING DIAGRAM

PROCEDURE

1.

CONFIRM MODEL

(a) Choose the model to be inspected.

Result

Result

Proceed to

w/o Navigation System

A

w/ Navigation System

B
B

GO TO STEP 5

A

2.

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

(a) Disconnect the D158 radio and display receiver assembly connector.

(b) Disconnect the W21 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

D158-11 (CA+) - W21-6 (CB+)

Always

Below 1 Ω

D158-12 (V+) - W21-3 (CV+)

Always

Below 1 Ω

D158-24 (V-) - W21-2 (CV-)

Always

Below 1 Ω

D158-23 (CGND) - W21-5 (CGND)

Always

Below 1 Ω

D158-11 (CA+) or W21-6 (CB+) Body ground

Always

10 kΩ or higher

D158-12 (V+) or W21-3 (CV+) - Body ground

Always

10 kΩ or higher

D158-24 (V-) or W21-2 (CV-) - Body ground

Always

10 kΩ or higher

D158-23 (CGND) or W21-5 (CGND) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D158-24 (V-) - Body ground

Always

Below 1 Ω

D158-23 (CGND) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

D158-11 (CA+) - D158-23 (CGND)

Ignition switch ON, shift lever in R

5.5 to 7.05 V

Text in Illustration

*a

Component with harness connected

(Radio and Display Receiver Assembly)
NG

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

OK

4.

CHECK REAR TELEVISION CAMERA ASSEMBLY

(a) Reconnect the W21 rear television camera assembly connector.

(b) Check the waveform of the rear television camera assembly using an oscilloscope.

Text in Illustration

*a

Component with harness connected

(Radio and Display Receiver Assembly)

*b

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

*c

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

*d

Synchronization Signal

*e

Video Waveform

-

-

HINT:

A waterproof connector is used for the 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

D158-12 (V+) - D158-24 (V-)

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 television camera assembly.
  • The video waveform is constantly output when the ignition switch is ACC.
OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPLACE REAR TELEVISION CAMERA ASSEMBLY

5.

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

(a) Disconnect the D159 navigation receiver assembly connector.

(b) Disconnect the W21 television camera assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D159-11 (CA+) - W21-6 (CB+)

Always

Below 1 Ω

D159-12 (V+) - W21-3 (CV+)

Always

Below 1 Ω

D159-24 (V-) - W21-2 (CV-)

Always

Below 1 Ω

D159-23 (CGND) - W21-5 (CGND)

Always

Below 1 Ω

D159-11 (CA+) or W21-6 (CB+) - Body ground

Always

10 kΩ or higher

D159-12 (V+) or W21-3 (CV+) - Body ground

Always

10 kΩ or higher

D159-24 (V-) or W21-2 (CV-) - Body ground

Always

10 kΩ or higher

D159-23 (CGND) or W21-5 (CGND) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

6.

INSPECT NAVIGATION RECEIVER ASSEMBLY

(a) Reconnect the navigation receiver assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D159-24 (V-) - Body ground

Always

Below 1 Ω

D159-23 (CGND) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

D159-11 (CA+) - F72-23 (CGND)

Ignition switch ON, shift lever in R

5.5 to 7.05 V

Text in Illustration

*a

Component with harness connected

(Navigation Receiver Assembly)
NG

REPLACE NAVIGATION RECEIVER ASSEMBLY

OK

7.

INSPECT REAR TELEVISION CAMERA ASSEMBLY

(a) Reconnect the W21 rear television camera assembly connector.

(b) Check the waveform of the rear television camera assembly using an oscilloscope.

Text in Illustration

*a

Component with harness connected

(Navigation Receiver Assembly)

*b

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

*c

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

*d

Synchronization Signal

*e

Video Waveform

-

-

HINT:

A waterproof connector is used for the 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

D159-12 (V+) - D159-24 (V-)

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 television camera assembly.
  • The video waveform is constantly output when the ignition switch is ACC.
OK

REPLACE NAVIGATION RECEIVER ASSEMBLY

NG

REPLACE REAR TELEVISION CAMERA ASSEMBLY