PANORAMIC VIEW MONITOR SYSTEM, Diagnostic DTC:C1681, C1682

DTC Code DTC Name
C1681 Front Camera Feedback Malfunction
C1682 Front Camera Current Malfunction

DESCRIPTION

DTC C1681 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 front television camera assembly to the parking assist ECU.

DTC C1682 is stored if the parking assist ECU judges as a result of its self check that there is a problem with the current supplied from the front television camera assembly connected to the parking assist ECU.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1681 Front Camera Feedback Malfunction Front television camera power supply failure

  • Harness or connector

  • Front television camera assembly

  • Parking assist ECU
C1682 Front Camera Current Malfunction Open or short in the front television camera signal circuit

  • Harness or connector

  • Front television camera assembly

  • Parking assist ECU

WIRING DIAGRAM

B006QJLE14
*a Front Television Camera Assembly
*b Parking Assist ECU

CAUTION / NOTICE / HINT

Note


  • 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

  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as panoramic view monitor system may be needed.

    Click here

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Chassis > Panoramic View Monitor > Clear DTCs

    2. Check for DTCs.

      Click here


      Chassis > Panoramic View Monitor > Trouble Codes
      OK
      DTCs C1681 and C1682 are not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

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


    1. Disconnect the F8 and F9 parking assist ECU connectors.

    2. Disconnect the A4 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
      F8-26 (BCB+) - A4-6 (BCB+) Always Below 1 Ω
      F8-24 (BCV+) - A4-3 (BCV+) Always Below 1 Ω
      F8-23 (BCV-) - A4-2 (BCV-) Always Below 1 Ω
      F8-25 (BGND) - A4-5 (BGND) Always Below 1 Ω
      F9-3 (GND1) - Body ground Always Below 1 Ω
      F8-26 (BCB+) or A4-6 (BCB+) - Body ground Always 10 kΩ or higher
      F8-24 (BCV+) or A4-3 (BCV+) - Body ground Always 10 kΩ or higher
      F8-23 (BCV-) or A4-2 (BCV-) - Body ground Always 10 kΩ or higher
      F8-25 (BGND) or A4-5 (BGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK PARKING ASSIST ECU (BCB+, BGND)


    1. B006Q62C22
      *a

      Component with harness connected

      (Parking Assist ECU)

      Remove the parking assist ECU with the connector still connected.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F8-25 (BGND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F8-26 (BCB+) - F8-25 (BGND) Engine switch on (ACC) 5.5 to 7.05 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  4. CHECK FRONT TELEVISION CAMERA ASSEMBLY


    1. Remove the parking assist ECU with the connector still connected.

      B006OOEC21
      *a

      Component with harness connected

      (Parking Assist ECU)

      		 *b Waveform 1
      *c Waveform 2 *d Synchronization Signal
      *e Video Waveform - -

    2. Using an oscilloscope, check the waveform.

      Tech Tips


      • A waterproof connector is used for the front television camera assembly. Therefore, inspect the waveform at the parking assist ECU with the connector connected.

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

      OK
      Waveform is as shown in the illustration.
      Measurement Condition
      Item Content
      Terminal No. (Symbol) F8-24 (BCV+) - F8-25 (BGND)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition

      • Waveform 1: Engine switch on (IG), steering pad switch assembly (panoramic view monitor main switch) on, camera lens not covered, displaying image

      • Waveform 2: Engine switch on (IG), steering pad switch assembly (panoramic view monitor main switch) on, camera lens covered, blacking out screen
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE PARKING ASSIST ECU Click here

    NG

    REPLACE FRONT TELEVISION CAMERA ASSEMBLY Click here