Toyota Avalon Service & Repair Manual: Image from Camera for Panoramic View Monitor is Abnormal

DESCRIPTION

The display signal from each camera is transmitted to the radio and display receiver assembly via the parking assist ECU.

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

  • 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

HINT:

Images may be unclear even in normal conditions if:
  • Electrical devices are used in the cabin (noise may occur in the image).
  • The camera lens is frosted over (the image immediately after turning the engine switch on (IG) may be blurred or darker than normal).
  • The camera lens is dirty with snow, mud, etc.
  • A strong beam of light, such as a sunbeam or headlight, hits the camera.
  • It is too dark around the camera (at night, etc.).
  • The ambient temperature around the camera is either too high or too low.
  • The vehicle is tilted at a steep angle.
  • The television camera assembly lens is scratched.
  • The television camera assembly lens has drops of water on it or the humidity is high.
  • When the camera is used under fluorescent lights, sodium lights, or mercury lights, etc., the lights and the illuminated area may appear to flicker.

PROCEDURE

1.

CHECK PANORAMIC VIEW MONITOR SYSTEM

(a) Check if the same malfunction occurs when the panoramic view monitor screen is displayed.

Result

Proceed to

Rear view screen is not displayed.

A

Front view screen is not displayed.

B

Left side monitor screen is not displayed.

C

Right side monitor screen is not displayed.

D

Panoramic view monitor screen is not displayed.

E

B

GO TO STEP 6

C

GO TO STEP 10

D

GO TO STEP 15

E

GO TO STEP 20

A

2.

CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - TELEVISION CAMERA ASSEMBLY)

Click here

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

CHECK HARNESS AND CONNECTOR (ACC POWER SUPPLY - GROUND)

Click here

NG

REPLACE PARKING ASSIST ECU

OK

4.

CHECK PARKING ASSIST ECU (CV-, CGND)

Click here

NG

REPLACE PARKING ASSIST ECU

OK

5.

CHECK TELEVISION CAMERA ASSEMBLY (CV+, CGND)

Click here

OK

REPLACE PARKING ASSIST ECU

NG

REPLACE TELEVISION CAMERA ASSEMBLY

6.

CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - FRONT TELEVISION CAMERA ASSEMBLY)

Click here

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

7.

CHECK PARKING ASSIST ECU (BCV-, BGND)

Click here

OK

REPLACE PARKING ASSIST ECU

NG

8.

CHECK PARKING ASSIST ECU (BCB+, BGND)

Click here

NG

REPLACE PARKING ASSIST ECU

OK

9.

CHECK FRONT TELEVISION CAMERA ASSEMBLY (BCV+, BGND)

Click here

OK

REPLACE PARKING ASSIST ECU

NG

REPLACE FRONT TELEVISION CAMERA ASSEMBLY

10.

CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - OUTER REAR VIEW MIRROR ASSEMBLY LH)

Click here

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

11.

CHECK PARKING ASSIST ECU (LCV-, LGND)

Click here

NG

REPLACE PARKING ASSIST ECU

OK

12.

CHECK PARKING ASSIST ECU (LCB+, LGND)

Click here

NG

REPLACE PARKING ASSIST ECU

OK

13.

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

Click here

OK

REPLACE PARKING ASSIST ECU

NG

14.

REPLACE SIDE TELEVISION CAMERA ASSEMBLY LH

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

Click here

(b) Check if the same malfunction reoccurs when the side monitor screen is displayed.

Result

Proceed to

Malfunction does not reoccur (returns to normal)

A

Malfunction reoccurs

B

A

END (SIDE TELEVISION CAMERA ASSEMBLY LH WAS DEFECTIVE)

B

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH

15.

CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - OUTER REAR VIEW MIRROR ASSEMBLY RH)

Click here

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

16.

CHECK PARKING ASSIST ECU (RCV-, RGND)

Click here

NG

REPLACE PARKING ASSIST ECU

OK

17.

CHECK PARKING ASSIST ECU (RCB+, RGND)

Click here

NG

REPLACE PARKING ASSIST ECU

OK

18.

CHECK SIDE TELEVISION CAMERA ASSEMBLY RH (RCV+, RGND)

Click here

OK

REPLACE PARKING ASSIST ECU

NG

19.

REPLACE SIDE TELEVISION CAMERA ASSEMBLY RH

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

Click here

(b) Check if the same malfunction reoccurs when the side monitor screen is displayed.

Result

Proceed to

Malfunction does not reoccur (returns to normal)

A

Malfunction reoccurs

B

A

END (SIDE TELEVISION CAMERA ASSEMBLY RH WAS DEFECTIVE)

B

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

20.

CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - RADIO AND DISPLAY RECEIVER ASSEMBLY)

(a) Disconnect the K35 parking assist ECU connector.

(b) Disconnect the G2 radio and display receiver assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K35-28 (NS+) - G2-28 (V+)

Always

Below 1 Ω

K35-26 (NS-) - G2-29 (V-)

Always

Below 1 Ω

K35-27 (NSG) - Body ground

Always

Below 1 Ω

K35-28 (NS+) or G2-28 (V+) - Body ground

Always

10 kΩ or higher

K35-26 (NS-) or G2-29 (V-) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

21.

CHECK PARKING ASSIST ECU (NS-, NSG)

(a) Disconnect the K35 parking assist ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

27 (NSG) - Body ground

Always

Below 1 Ω

26 (NS-) - Body ground

Always

Below 1 Ω

*a

Component without harness connected

(Parking Assist ECU)

NG

REPLACE PARKING ASSIST ECU

OK

22.

CHECK PARKING ASSIST ECU (NS+, NSG)

(a) Remove the parking assist ECU 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 parking assist ECU with the connector connected.

*a

Component with harness connected

(Parking Assist ECU)

*b

Waveform 1

*c

Synchronization Signal

*d

Video Waveform

HINT:

The video waveform changes according to the image sent by the front television camera assembly.

Measurement Condition

Item

Content

Terminal No. (Symbol)

K35-28 (NS+) - K35-27 (NSG)

Tool Setting

200 mV/DIV., 50 μsec./DIV.

Condition

Engine switch on (IG), Panoramic image being displayed

OK:

Waveform is similar to that shown in the illustration.

OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPLACE PARKING ASSIST ECU

    How To Proceed With Troubleshooting

    Initialization

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