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 engine 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
.gif)
PROCEDURE
| 1. | ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Perform millimeter wave radar sensor assembly beam axis adjustment.
Click here
|
.gif)
| 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 |
READ NEXT:
Main Microcomputer in Front Radar Sensor Calibration/Parameter Memory Failure (C1A8C46,C1A8D1C,C1A9000,C1A9100)
DESCRIPTION When an internal malfunction is detected in the millimeter wave radar sensor assembly, a DTC is stored. DTC No. Detection Item DTC Detection Condition Trouble Area C1A8C46 M
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
SEE MORE:
Components
COMPONENTS ILLUSTRATION *1 DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY) *2 INSTRUMENT CLUSTER FINISH PANEL ASSEMBLY
Pattern Select Switch Eco Mode Circuit
DESCRIPTION When selecting Eco drive mode, the drive mode select switch (combination switch assembly) (Eco drive mode) operation signal is sent to the air conditioning amplifier assembly. Following this, Eco drive mode control is activated for the heater and air conditioning system and the hybrid ve
