Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: ECU Malfunction (C1611)

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Audio & Visual & Telematics / Park Assist / Monitoring / Parking Assist Monitor System / ECU Malfunction (C1611)

DESCRIPTION

This DTC is stored if the rear television camera assembly judges that there is an internal malfunction as a result of its self check.

HINT:

The rear television camera assembly stores different types of information during initialization. If the rear television camera assembly cannot read the stored information when it is activated, the rear television camera assembly judges that there is an internal malfunction and stores this DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1611

ECU Malfunction

When one of the following conditions is met:

  • EEPROM status (Initial read) malfunction
  • CPU communication malfunction
  • ASIC output malfunction

Rear television camera assembly

CAUTION / NOTICE / HINT

NOTICE:

  • When "!" mark is displayed on the multi-display assembly after disconnecting the cable 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 the parking assist monitor system may be needed.

    Click here

PROCEDURE

1.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Chassis / Rear Camera / Data List.

(e) Read the Data List according to the display on the Techstream.

Chassis > Rear Camera > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Video Output Status

Output condition of video signal

OK or NG

OK: Output condition of video signal is normal

NG: Output condition of video signal is abnormal

-

EEPROM Status (Initial read)

Rear television camera assembly information

OK or NG

OK: Rear television camera assembly normal

NG: Rear television camera assembly abnormal

-

CPU Communication Status

Rear television camera assembly information

OK or NG

OK: Rear television camera assembly normal

NG: Rear television camera assembly abnormal

-
Chassis > Rear Camera > Data List

Tester Display

Video Output Status

EEPROM Status (Initial read)

CPU Communication Status

Result

Proceed to

OK is displayed for all items

A

NG is displayed for EEPROM status (Initial read)

NG is displayed for items other than EEPROM status (Initial read)

B
B

REPLACE REAR TELEVISION CAMERA ASSEMBLY

A

2.

PERFORM CALIBRATION

(a) Perform the following procedure depending on the memory conditions to register the vehicle information into the rear television camera assembly.

(1) Rear television camera assembly optical axis adjustment (back camera position setting).

Click here

(2) Steering angle setting.

Click here

NEXT

3.

CHECK DTC OUTPUT

(a) Clear the DTCs.

Click here

Chassis > Rear Camera > Clear DTCs

(b) Recheck for DTCs and check that no DTCs are output.

Click here

Chassis > Rear Camera > Trouble Codes

HINT:

  • If DTC C1611 is output, perform the procedure to register the vehicle information into the rear television camera assembly.
  • If DTC C1611 is still output after performing the procedure to register the vehicle information into the rear television camera assembly 3 times, replace the rear television camera assembly.

Result

Proceed to

DTC C1611 is output

A

DTC C1611 is not output

B
A

REPLACE REAR TELEVISION CAMERA ASSEMBLY

B

END
    Dtc Check / Clear
    DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Chassis / Rear Camera / Trouble Codes ...

    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-displa ...

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