PARKING ASSIST MONITOR SYSTEM (w/ Side Monitor System), Diagnostic DTC:C1621, C1622

DTC Code DTC Name
C1621 Back Camera Power Supply Failure
C1622 Open or Short Circuit in Back Camera Signal

DESCRIPTION

These DTC are stored if the parking assist ECU judges as a result of its self check that the signals or signal lines between the parking assist ECU and the rear television camera assembly are not normal.

DTC Code DTC Detection Condition Trouble Area
C1621 An open or short in the rear television camera signal circuit

  • Harness or connector

  • Rear television camera assembly

  • Parking assist ECU
C1622 An open or short in the rear television camera signal circuit

WIRING DIAGRAM

A01ER3ZE01

INSPECTION PROCEDURE

Note


  • When "System initializing" is displayed on the parking assist ECU after the battery terminal disconnected, 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 parking assist monitor system (w/ Side Monitor System) may be needed Click here.

PROCEDURE


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


    1. Disconnect the F74 and F75 parking assist ECU connectors.

    2. Disconnect the S5 rear television camera assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F75-38 (CV-) - S5-1 (CV-) Always Below 1 Ω
      F75-15 (CV+) - S5-2 (CV+) Always Below 1 Ω
      F75-14 (CB+) - S5-4 (CB+) Always Below 1 Ω
      F75-37 (CGND) - S5-3 (CGND) Always Below 1 Ω
      F74-4 (GND1) - Body ground Always Below 1 Ω
      F75-38 (CV-) - Body ground Always 10 kΩ or higher
      F75-15 (CV+) - Body ground Always 10 kΩ or higher
      F75-14 (CB+) - Body ground Always 10 kΩ or higher
      F75-37 (CGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK PARKING ASSIST ECU (CB+, CGND)


    1. A01ENMWE01
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

      Reconnect the F74 and F75 parking assist ECU connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F75-37 (CGND) - 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
      F75-14 (CB+) - F75-37 (CGND) Engine switch on (IG), shift lever in R 5.5 to 7.05 V

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  3. CHECK REAR TELEVISION CAMERA ASSEMBLY (CV+, CGND)


    1. Reconnect the S5 rear television camera assembly connector.

      A01ER52E01
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

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

    2. Check the waveform of the rear television camera assembly using an oscilloscope.

      Tech Tips


      • A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the multi-media module receiver assembly with the connector connected.

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

      Item Content
      Terminal No. (Symbol) F75-15 (CV+) - F75-37 (CGND)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition

      • Waveform A: Engine switch on (IG), shift lever in R and camera lens is not covered, displaying an image

      • Waveform B: Engine switch on (IG), shift lever in R and camera lens is covered, blacking out the screen
      OK
      Waveform is as shown in the illustration.

    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here

    OK

    REPLACE PARKING ASSIST ECU Click here