Lexus ES manuals

Lexus ES: Back Camera Power Supply Failure (C1621)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1621

Back Camera Power Supply Failure

Rear television camera assembly power supply failure

  • Harness or connector
  • Rear 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 multi-display 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 - REAR TELEVISION CAMERA ASSEMBLY)

(a) Disconnect the N43 parking assist ECU connector.

(b) Disconnect the T2 rear television camera assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

N43-32 (CGND) - T2-5 (CGND)

Always

Below 1 Ω

N43-32 (CGND) or T2-5 (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

T2-6 (CB+) - Body ground

Power switch on (IG)

11 to 14 V

OK

REPLACE PARKING ASSIST ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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