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

CHECK NAVIGATION RECEIVER ASSEMBLY

CHECK RADIO AND DISPLAY RECEIVER 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 (LandCruiser RM0000035DE05TX.html).
   
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 (LandCruiser RM0000035DD06LX.html).
   

HINT:

Images may be unclear even in normal conditions if:

1. Electrical devices are used in the cabin (noise may occur in the image).
   
2. The camera lens is frosted over (the image immediately after turning the engine switch on (IG) may be blurred or darker than normal).
   
3. The camera lens is dirty with snow, mud, etc.
   
4. A strong beam of light, such as a sunbeam or headlight, hits the camera.
   
5. It is too dark around the camera (at night etc.).
   
6. The ambient temperature around the camera is either too high or too low.
   
7. The vehicle is tilted at a steep angle.
   
8. The camera lens is damaged by plying stones.
   
9. The front television camera assembly lens is scratched.
   
10. The front television camera assembly lens has drops of water on it or the humidity is high.
    
11. When the camera is used under fluorescent lights, sodium lights, or mercury lights etc., the lights and the illuminated area may appear to flicker.
    

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 I6 and I7 parking assist ECU connectors.
   

2. Disconnect the A52 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
   I7-36 (BCV-) - A52-4 (BCV-)	Always	Below 1 Ω
   I7-12 (BCV+) - A52-2 (BCV+)	Always	Below 1 Ω
   I7-35 (BGND) - A52-3 (BGND)	Always	Below 1 Ω
   I7-11 (BCB+) - A52-1 (BCB+)	Always	Below 1 Ω
   I7-36 (BCV-) - Body ground	Always	10 kΩ or higher
   I7-12 (BCV+) - Body ground	Always	10 kΩ or higher
   I7-35 (BGND) - Body ground	Always	10 kΩ or higher
   I7-11 (BCB+) - Body ground	Always	10 kΩ or higher

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   I7-35 (BGND) - Body ground	Always	Below 1 Ω

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

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   I7-11 (BCB+) - I7-35 (BGND)	Engine switch on (IG), wide view front and side monitor switch on	5.5 to 7.05 V

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

   
   
   
   
   

   Text in Illustration

   *a	Component with harness connected (Parking Assist ECU)	*b	Waveform A
   *c	Waveform B	*d	Synchronized 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.
      

   OK:

   Waveform is as shown in the illustration.
   

   Item	Content
   Terminal No. (Symbol)	I7-12 (BCV+) - I7-35 (BGND)
   Tool Setting	200 mV/DIV., 50 μsec./DIV.
   Condition	Waveform A: Engine switch on (IG), wide view front and side monitor switch on and camera lens is not covered, displaying an image Waveform B: Engine switch on (IG), wide view front and side monitor switch on and camera lens is covered, blacking out the screen

1. Disconnect the I7 parking assist ECU connector.
   

2. Disconnect the H50 navigation receiver assembly*1 or radio and display receiver assembly*2 connectors.
   

   1. *1: for Navigation Receiver Type
      
   2. *2: for Radio and Display Type
      

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   I7-16 (NS+) - H50-12 (V+)	Always	Below 1 Ω
   I7-17 (NS-) - H50-24 (V-)	Always	Below 1 Ω
   I7-18 (NSG) - H50-23 (CGND)	Always	Below 1 Ω
   I7-16 (NS+) - Body ground	Always	10 kΩ or higher
   I7-17 (NS-) - Body ground	Always	10 kΩ or higher
   I7-18 (NSG) - Body ground	Always	Below 1 kΩ

1. Replace the navigation receiver assembly with a normally functioning one (LandCruiser RM000003B6H02GX.html).
   

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 radio and display receiver assembly with a normally functioning one (LandCruiser RM000003AHY02NX.html).
   

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).