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 | -
Millimeter wave radar sensor assembly beam axis adjustment
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Millimeter wave radar sensor assembly
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CAUTION / NOTICE / HINT
NOTICE:
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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.
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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.
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PROCEDURE
1. | ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Perform millimeter wave radar sensor assembly beam axis adjustment.
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NEXT | | |
(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 | | END |
B | | REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
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INSTALLATION
PROCEDURE
1. INSTALL NO. 1 HV BATTERY INTAKE FILTER
(a) Engage the 2 claws to temporarily install the No. 1 HV battery intake filter
to the battery service hole cover.
(b) Engage the 3 claws to install the No. 1 HV battery intake filter to the battery
service hole cover.
2. INS
DISASSEMBLY CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during rear door removal/installation are shown below. Necessary Procedure After Parts Removed/Installed/R
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