Lexus ES: 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 |
|
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 is replaced with a new one, adjustment of the millimeter wave radar sensor beam axis must be performed.
Click here
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PROCEDURE
| 1. | ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Perform millimeter wave radar sensor assembly beam axis adjustment.
Click here
|
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| 2. | CHECK FOR DTCs |
(a) Clear the DTCs.
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.
Body Electrical > Front Radar Sensor > Trouble Codes| Result | Proceed to |
|---|---|
| DTC C1A1100 is not output | A |
| DTC C1A1100 is output | B |
| A | .gif) | END |
| B | | REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
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Removal
REMOVAL PROCEDURE 1. REMOVE FRONT DOOR SCUFF PLATE LH Click here 2. REMOVE COWL SIDE TRIM BOARD LH Click here 3. REMOVE FRONT DOOR OPENING TRIM COVER LH Click here 4. REMOVE INSTRUMENT SIDE PANEL LH Click here 5. REMOVE FRONT DOOR SCUFF PLATE RH HINT: Use the same procedure as for the LH sid
