Wide View Front Monitor System Image From Camera For Wide View Front Monitor Is Abnormal

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK SIDE MONITOR SYSTEM

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

CHECK PARKING ASSIST ECU (BCB+, BGND)

CHECK FRONT TELEVISION CAMERA ASSEMBLY (BCV+, BGND)

CHECK HARNESS AND CONNECTOR (GVIF CABLE)

CHECK MULTI-DISPLAY ASSEMBLY

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

1. When "System initializing" is displayed on the parking assist ECU after the cable is disconnected from the negative (-) battery terminal, correct the steering angle neutral point (Click here).
   
2. Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as wide view front monitor system may be needed (Click here).
   

HINT:

Images are difficult to discern even in normal conditions if:

1. Noise may occur in the image depending on electrical devices used in the cabin.
   
2. Noise may occur in the image if accessories that generate radio waves have been installed.
   
3. The camera screen is frosted over (the image immediately after turning the engine switch on (IG) may be blurred or darker than normal).
   
4. The camera lens is dirty with snow, mud, etc.
   
5. A strong beam of light, such as a sunbeam or headlight, hits the camera.
   
6. It is too dark around the camera (at night etc.).
   
7. The ambient temperature around the camera is either too high or too low.
   
8. The vehicle is tilted at a steep angle.
   
9. The ambience of the camera is too bright. (When a strong light, such as a sunbeam reflected off the vehicle body, hits the camera, the image may be blurred. This is called the "SMEAR" phenomenon, particular to the CCD camera.)
   

1. Check if the same malfunction occurs when the side monitor screen is displayed.
   

   Result

   Result	Proceed to
   Malfunction occurs when front monitor screen is displayed (side monitor screen is normal).	A
   Malfunction occurs when front assist monitor screen and side monitor screen are displayed.	B

1. Disconnect the F75 and F76 parking assist ECU connectors.
   

2. Disconnect the A55 front television camera assembly connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   F76-36 (BCV-) - A55-4 (BCV-)	Always	Below 1 Ω
   F76-12 (BCV+) - A55-2 (BCV+)	Always	Below 1 Ω
   F76-35 (BGND) - A55-3 (BGND)	Always	Below 1 Ω
   F76-11 (BCB+) - A55-1 (BCB+)	Always	Always
   F75-4 (GND1) - Body ground	Always	Always
   F76-36 (BCV-) - Body ground	Always	10 kΩ or higher
   F76-12 (BCV+) - Body ground	Always	10 kΩ or higher
   F76-35 (BGND) - Body ground	Always	10 kΩ or higher
   F76-11 (BCB+) - Body ground	Always	10 kΩ or higher

1. Reconnect the F75 and F76 parking assist ECU connectors.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   F76-35 (BGND) - Body ground	Always	Below 1 Ω

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

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   F76-11 (BCB+) - F76-35 (BGND)	Engine switch on (IG), front and side monitor main switch assembly on	5.5 to 7.05 V

1. Reconnect the A55 front television camera assembly connector.
   

   
   
   
   
   

   Text in Illustration

   *a	Component with harness connected (Parking Assist ECU)	*b	Waveform A
   *c	Waveform B	*d	Synchronization Signal
   *e	Video Waveform	-	-

   HINT:

   1. A waterproof connector is used for the front television camera assembly. Therefore, inspect the waveform at the parking assist ECU with the connector connected.
      
   2. The video waveform changes according to the image sent by the front television camera assembly.
      

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

   OK:

   Waveform is as shown in the illustration.
   

   Item	Content
   Terminal No. (Symbol)	F76-12 (BCV+) - F76-35 (BGND)
   Tool Setting	200 mV/DIV., 50 μsec./DIV.
   Condition	Waveform A: Engine switch on (IG), front and side monitor main switch assembly on and camera lens is not covered, displaying an image Waveform B: Engine switch on (IG), front and side monitor main switch assembly on and camera lens is covered, blacking out the screen

1. Replace GVIF cable with a normally functioning one.
   

2. Check if the same malfunction recurs when the front monitor and side monitor screens are displayed.
   

   OK:

   Malfunction does not reoccur (returns to normal).
   

1. Replace the multi-display assembly with a normally functioning one (Click here).
   

2. Check if the same malfunction recurs when the front monitor and side monitor screens are displayed.
   

   OK:

   Malfunction does not reoccur (returns to normal).