Lexus NX: ECU Malfunction (C1611)

DESCRIPTION

If the clearance warning ECU assembly detects an internal malfunction during self-diagnosis, DTC C1611 is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1611

ECU Malfunction

  • Sub-CPU abnormal signal
  • Mirror check abnormal

Clearance warning ECU assembly

CAUTION / NOTICE / HINT

NOTICE:

  • After the power switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

    Click here

  • When disconnecting and reconnecting the auxiliary battery

    Click here

    HINT:

    When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

    Click here

  • After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).

    Click here

PROCEDURE

1.

CHECK FOR DTC

(a) Using the Techstream, check for DTCs according to the prompts on the screen.

Click here

HINT:

After turning the power switch from off to on (IG), wait 3 seconds or more before checking for DTCs.

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes

(b) Clear the DTCs according to the screen on the Techstream.

Click here

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs

(c) Recheck for DTCs.

Click here

Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes

Result

Proceed to

DTC C1611 is output

A

DTC C1611 is not output

B

A

REPLACE CLEARANCE WARNING ECU ASSEMBLY

B

USE SIMULATION METHOD TO CHECK

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SEE MORE:

 Parts Location

PARTS LOCATION ILLUSTRATION *1 AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1) *2 CHARCOAL CANISTER ASSEMBLY *3 EGR VALVE ASSEMBLY *4 FUEL TANK CAP ASSEMBLY *5 HEATED OXYGEN SENSOR (for Bank 1 Sensor 2) *6 PCV VALVE *7 PURGE VSV *8 NO. 1 ENGINE ROOM RELAY BLOCK AN

 Removal

REMOVAL CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. PROCEDURE 1. REMOVE REAR SEAT ASSEMBLY Click here 2. REMOVE REAR SEATBACK COVER Click here 3. REMOVE REAR SEAT INNER WITH CENTER BELT ASSY RH (for RH Side) Click here 4. REMOVE REAR

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