WIDE VIEW FRONT 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 Code DTC Detection Condition Trouble Area
C1681 Front television camera power supply failure

  • Harness or connector

  • Front television camera assembly

  • Parking assist ECU
C1682 An open or short in the front television camera signal circuit

WIRING DIAGRAM

A01X89HE08
*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 wide view front monitor system may be needed Click here.

PROCEDURE


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


    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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01XBLTE02
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

      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

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  3. CHECK FRONT TELEVISION CAMERA ASSEMBLY (BCV+, BGND)


    1. Reconnect the A55 front television camera assembly connector.

      B001VLFE02
      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


      • 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.

    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

    OK

    REPLACE PARKING ASSIST ECU Click here

    NG

    REPLACE FRONT TELEVISION CAMERA ASSEMBLY Click here