Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000027Y54
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: ADVANCED DRIVER ASSISTANCE SYSTEM: FRONT RADAR SENSOR SYSTEM: C1A1100; Front Radar Sensor Optical Axis Misalignment Malfunction; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]

DTC

C1A1100

Front Radar Sensor Optical Axis Misalignment Malfunction

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

DTC Output from

Priority

C1A1100

Front Radar Sensor Optical Axis Misalignment Malfunction

When the ignition switch is ON, the millimeter wave radar sensor assembly detects beam axis misalignment

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

Front Radar Sensor

A

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 beam axis alignment and to clear the vehicle control history. Before performing the Driving Adjustment, make sure to read Before Starting Driving Adjustment.

    HINT:

    Beam axis alignment of the millimeter wave radar sensor assembly can be performed using either Triangle Target, Flat Surface Target or Driving Adjustment.

    Triangle Target: Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; ADVANCED DRIVER ASSISTANCE SYSTEM: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(TRIANGLE TARGET)

    Flat Surface Target: Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; ADVANCED DRIVER ASSISTANCE SYSTEM: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(FLAT SURFACE TARGET)

    Driving Adjustment: Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; ADVANCED DRIVER ASSISTANCE SYSTEM: MILLIMETER WAVE RADAR SENSOR: DRIVING ADJUSTMENT

PROCEDURE

1.

ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY

HINT:

Beam axis alignment of the millimeter wave radar sensor assembly can be performed using either Triangle Target, Flat Surface Target or Driving Adjustment.

Triangle Target: Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; ADVANCED DRIVER ASSISTANCE SYSTEM: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(TRIANGLE TARGET)

Flat Surface Target: Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; ADVANCED DRIVER ASSISTANCE SYSTEM: MILLIMETER WAVE RADAR SENSOR: TARGET ADJUSTMENT(FLAT SURFACE TARGET)

Driving Adjustment: Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; ADVANCED DRIVER ASSISTANCE SYSTEM: MILLIMETER WAVE RADAR SENSOR: DRIVING ADJUSTMENT

NEXT

2.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Front Radar Sensor > Clear DTCs

NEXT

3.

CHECK FOR DTCs

Pre-procedure1

(a) Turn the ignition switch off.

(b) Turn the ignition switch to ON.

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

HINT:

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

Procedure1

(d) Check for DTCs.

Body Electrical > Front Radar Sensor > Trouble Codes

Result

Proceed to

DTC C1A1100 is not output

A

DTC C1A1100 is output

B

Post-procedure1

(e) None.

A

END

B

REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY