Dtc C1686 Driver Side Camera Video Sync Signal Malfunction

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

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

CHECK PARKING ASSIST ECU

CHECK DRIVER SIDE OUTER REAR VIEW MIRROR ASSEMBLY

REPLACE DRIVER SIDE TELEVISION CAMERA ASSEMBLY

CHECK FOR DTC

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

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 side monitor system may be needed (LandCruiser RM000003XM401ZX.html).

1. Clear the DTCs (LandCruiser RM000003XM2023X.html).
   

2. Check for DTCs (LandCruiser RM000003XM2023X.html).
   

   Result

   Result	Proceed to
   DTC C1686 and C1687 are not output	A
   DTC C1686 and/or C1687 is output	B

1. Disconnect the I7 parking assist ECU connector.
   

2. Disconnect the K2*1 or J3*2 driver side outer rear view mirror assembly connector.
   

   1. *1: for LHD
      
   2. *2: for RHD
      

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

   Standard Resistance:

   for LHD

   Tester Connection	Condition	Specified Condition
   I7-31 (DCV-) - K2-12 (DCV-)	Always	Below 1 Ω
   I7-30 (DCV+) - K2-6 (DCV+)	Always	Below 1 Ω
   I7-29 (DGND) - K2-13 (DGND)	Always	Below 1 Ω
   I7-28 (DCB+) - K2-5 (DCB+)	Always	Below 1 Ω
   I7-31 (DCV-) - Body ground	Always	10 kΩ or higher
   I7-30 (DCV+) - Body ground	Always	10 kΩ or higher
   I7-29 (DGND) - Body ground	Always	10 kΩ or higher
   I7-28 (DCB+) - Body ground	Always	10 kΩ or higher

   for RHD

   Tester Connection	Condition	Specified Condition
   I7-31 (DCV-) - J3-12 (DCV-)	Always	Below 1 Ω
   I7-30 (DCV+) - J3-6 (DCV+)	Always	Below 1 Ω
   I7-29 (DGND) - J3-13 (DGND)	Always	Below 1 Ω
   I7-28 (DCB+) - J3-5 (DCB+)	Always	Below 1 Ω
   I7-31 (DCV-) - Body ground	Always	10 kΩ or higher
   I7-30 (DCV+) - Body ground	Always	10 kΩ or higher
   I7-29 (DGND) - Body ground	Always	10 kΩ or higher
   I7-28 (DCB+) - 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
   I7-29 (DGND) - Body ground	Always	Below 1 Ω

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

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   I7-28 (DCB+) - I7-29 (DGND)	Engine switch on (IG), wide view front and side monitor switch on	5.5 to 7.05 V

1. Measure the waveform of the driver side television camera assembly using an oscilloscope.
   

   
   
   
   
   

   Text in Illustration

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

   HINT:

   1. A waterproof connector is used for the side television camera assembly. Therefore, inspect the waveform at the navigation receiver assembly*1 or radio and display receiver assembly*2 with the connector connected.
      
   1. *1: for Navigation Receiver Type
      
   2. *2: for Radio and Display Type
      
   2. The video waveform changes according to the image sent by the side television camera assembly.
      

   Measurement Condition

   Item	Content
   Tester Connection	I7-30 (DCV+) - I7-29 (DGND)
   Tool Setting	200 mV/DIV., 50 μsec./DIV.
   Condition	Waveform A: Engine switch on (IG), wide view front and side monitor switch on, camera lens not covered, displaying image Waveform B: Engine switch on (IG), wide view front and side monitor switch on, camera lens covered, blacking out screen

   OK:

   Waveform is as shown in illustration.
   

1. Replace the driver side television camera assembly with a new or normally functioning one (LandCruiser RM000003A0M02TX.html).
   

1. Clear the DTCs (LandCruiser RM000003XM2023X.html).
   

2. Check for DTCs (LandCruiser RM000003XM2023X.html).
   

   Result

   Result	Proceed to
   DTC C1686 and C1687 are not output	A
   DTCs C1686 and/or C1687 is output	B