Toyota Avalon Service & Repair Manual: Back Camera Power Supply Failure (C1621)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

C1621

Back Camera Power Supply Failure

Television camera assembly power supply failure

  • Harness or connector
  • Television camera assembly

Television camera assembly

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • When "!" is displayed on the radio and display receiver assembly after the cable is disconnected from the negative (-) auxiliary 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 panoramic view monitor system may be needed.

    Click here

PROCEDURE

1.

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

(a) Disconnect the K36 parking assist ECU connector.

(b) Disconnect the P7 television camera assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K36-9 (CGND) - P7-5 (CGND)

Always

Below 1 Ω

K36-9 (CGND) or P7-5 (CGND) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

CHECK HARNESS AND CONNECTOR (ACC POWER SUPPLY - BODY GROUND)

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

P7-6 (CB+) - Body ground

Power switch on (ACC)

11 to 14 V

OK

REPLACE TELEVISION CAMERA ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    ECU Malfunction (C1614)

    Open or Short Circuit in Back Camera Signal (C1622)

    See More:

    Toyota Avalon Service & Repair Manual > Navigation System(for Gasoline Model): Diagnostic Trouble Code Chart
    DIAGNOSTIC TROUBLE CODE CHART Navigation System DTC No. Detection Item Link B1324 Lost Communication with Meter B1325 Lost Communication with HUD B153A GVIF Disconnected (from Extension Module to H/U) B1543 Extension Module Disconnected 2 B1551 HD Radio Tuner Malfunction B1556 Extension Module Malfu ...

    Toyota Avalon Owners Manual

    Toyota Avalon Service & Repair Manual

    © 2021 Copyright www.tavalon.net
    0.0366