Lexus NX: Front Radar Sensor Optical Axis Misalignment Malfunction (C1A1100)

Lexus NX Service Manual / Engine & Hybrid System / Cruise Control / Front Radar Sensor System / Front Radar Sensor Optical Axis Misalignment Malfunction (C1A1100)

DESCRIPTION

The millimeter wave radar sensor assembly performs self-diagnosis to check for misalignment of its beam axis. If misalignment is detected, the millimeter wave radar sensor assembly stores DTC C1A1100.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A1100

Front Radar Sensor Optical Axis Misalignment Malfunction

When the power switch is on (IG), the millimeter wave radar sensor assembly detects beam axis misalignment

  • Millimeter wave radar sensor assembly beam axis adjustment
  • Millimeter wave radar sensor assembly

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly which was installed to another vehicle is used, the information stored in the millimeter wave radar sensor assembly will not match the information from the vehicle and a DTC may be stored.
  • When the millimeter wave radar sensor assembly has been replaced with a new one, it is necessary to perform millimeter wave radar sensor assembly adjustment and front radar acceleration sensor calibration, and to clear the vehicle control history.

    Click here

PROCEDURE

1.

ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY

(a) Perform millimeter wave radar sensor assembly beam axis adjustment.

Click here

NEXT

2.

CHECK FOR DTC

(a) Clear the DTCs.

Click here

Body Electrical > Front Radar Sensor > Clear DTCs

(b) Make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

(c) Check for DTCs.

Click here

Body Electrical > Front Radar Sensor > Trouble Codes

OK:

DTC C1A1100 is not output.

OK

END (OPTICAL AXIS ADJUSTMENT WAS DEFECTIVE)

NG

REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY

READ NEXT:

 Lost Communication with Cruise Control Module Missing Message (U010487)

DESCRIPTION The millimeter wave radar sensor assembly communicates with the forward recognition camera via CAN communication. If a communication error is detected between the forward recognition camer

 Software Incompatibility with Cruise Control Module Invalid/Incompatible Software Component (U030557)

DESCRIPTION The millimeter wave radar sensor assembly receives vehicle information from the forward recognition camera via CAN communication. If the vehicle information stored in the forward recogniti

 Lane Tracing Assist System

SEE MORE:

 How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use the following procedures to troubleshoot the steering lock system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. CUSTOMER PROBLEM ANALYSIS (a) Interview the customer and confirm the problem. Click

 ECU Power Source Circuit Malfunction (B2620)

DESCRIPTION The ECU power source circuit supplies positive (+) voltage to the multiplex tilt and telescopic ECU. DTC No. Detection Item DTC Detection Condition Trouble Area B2620 ECU Power Source Circuit Malfunction The voltage of the ECU power source drops to 8 V or less and this c

© 2016-2025 Copyright www.lexunx.com