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 multi-display assembly 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
  • Multi-display assembly

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

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 may be needed.

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PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY)

(a) Disconnect the G22 multi-display assembly connector.

(b) Disconnect the T1 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

G22-10 (CA+) - T1-6 (CB+)

Always

Below 1 Ω

G22-21 (CGND) - T1-5 (CGND)

Always

Below 1 Ω

G22-10 (CA+) or T1-6 (CB+) - Body ground

Always

10 kΩ or higher

G22-21 (CGND) or T1-5 (CGND) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

INSPECT MULTI-DISPLAY ASSEMBLY

(a) Reconnect the G22 multi-display assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G22-21 (CGND) - Body ground

Always

Below 1 Ω

*a

Component with harness connected

(Multi-display Assembly)

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

G22-10 (CA+) - G22-21 (CGND)

Engine switch on (ACC)

5.5 to 7.05 V

OK

REPLACE REAR TELEVISION CAMERA ASSEMBLY

NG

REPLACE MULTI-DISPLAY ASSEMBLY

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