MULTI-TERRAIN MONITOR SYSTEM, Diagnostic DTC:C1686

DTC Code DTC Name
C1686 Driver Side Camera Video Sync Signal Malfunction

DESCRIPTION

DTC C1686 is stored if the parking assist ECU judges as a result of its self check that a synchronization problem is occurring in the image signal sent from the side television camera assembly to the parking assist ECU.

DTC Code DTC Detection Condition Trouble Area
C1686 Side Camera Feedback Malfunction

    for LHD:

  • Harness or connector

  • Parking assist ECU

  • Side television camera assembly LH

  • Outer rear view mirror assembly LH


    for RHD:

  • Harness or connector

  • Parking assist ECU

  • Side television camera assembly RH

  • Outer rear view mirror assembly RH

WIRING DIAGRAM


CAUTION / NOTICE / HINT

Note


  • When "!" mark is displayed on the multi-display 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 multi-terrain monitor system may be needed Click here.

PROCEDURE


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


    1. Disconnect the F75 parking assist ECU connector.

    2. Disconnect the I35*1 or I33*2 outer rear view mirror assembly connector.


      • *1: for LHD

      • *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
      F75-4 (DCV-) - I35-12 (SCV-) Always Below 1 Ω
      F75-5 (DCV+) - I35-1 (SCV+) Always Below 1 Ω
      F75-3 (DGND) - I35-13 (SGND) Always Below 1 Ω
      F75-2 (DCB+) - I35-2 (SCB+) Always Below 1 Ω
      F75-1 (SGND) - Body ground Always Below 1 Ω
      F75-4 (DCV-) - Body ground Always 10 kΩ or higher
      F75-5 (DCV+) - Body ground Always 10 kΩ or higher
      F75-3 (DGND) - Body ground Always 10 kΩ or higher
      F75-2 (DCB+) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      F75-4 (DCV-) - I33-12 (DCV-) Always Below 1 Ω
      F75-5 (DCV+) - I33-1 (DCV+) Always Below 1 Ω
      F75-3 (DGND) - I33-13 (DGND) Always Below 1 Ω
      F75-2 (DCB+) - I33-2 (DCB+) Always Below 1 Ω
      F75-1 (SGND) - Body ground Always Below 1 Ω
      F75-4 (DCV-) - Body ground Always 10 kΩ or higher
      F75-5 (DCV+) - Body ground Always 10 kΩ or higher
      F75-3 (DGND) - Body ground Always 10 kΩ or higher
      F75-2 (DCB+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK PARKING ASSIST ECU (DCV-, SGND)


    1. B0019RHE21
      Text in Illustration
      *a

      Component without harness connected

      (Parking Assist ECU)

      Disconnect the parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (DGND) - Body ground Always Below 1 Ω
      4 (DCV-) - Body ground Always Below 1 Ω

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  3. CHECK PARKING ASSIST ECU (DCB+, DGND)


    1. B001853E02
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F75-3 (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
      F75-2 (DCB+) - F75-3 (DGND) Engine switch on (IG) 5.5 to 7.05 V

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  4. CHECK SIDE TELEVISION CAMERA ASSEMBLY (DCV+, DGND)


    1. Check the ware form of the side television camera assembly using an oscilloscope.

      B0019SNE04
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

      		 *b Waveform A
      *c Waveform B *d Synchronization Signal
      *e Video Waveform - -

      Tech Tips

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

      Item Content
      Terminal No. (Symbol) F75-5 (DCV+) - F75-3 (DGND)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition

      • Waveform A: Engine switch on (IG), main switch assembly (multi-terrain monitor main switch) on and camera lens is not covered, displaying an image

      • Waveform B: Engine switch on (IG), main switch assembly (multi-terrain monitor main switch) on and camera lens is covered, blacking out the screen
      OK
      Waveform is as shown in the illustration.

    OK

    REPLACE PARKING ASSIST ECU Click here

    NG

  5. REPLACE SIDE TELEVISION CAMERA ASSEMBLY


    1. for LHD:

      Replace the side television camera assembly LH with a new or normally functioning one Click here.

    2. for RHD:

      Replace the side television camera assembly RH with a new or normally functioning one Click here.


    NEXT

  6. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC C1686 is not output.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    A

    END (SIDE TELEVISION CAMERA ASSEMBLY IS DEFECTIVE)

    B

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH Click here

    C

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH Click here