Lexus ES: Diagnostic Trouble Code Chart
Lexus ES (XZ10) Service Manual / Engine & Hybrid System / Cruise Control / Front Radar Sensor System (for Hv Model) / Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Front Radar Sensor System| DTC No. | Detection Item | Link |
|---|---|---|
| C1A1100 | Front Radar Sensor Optical Axis Misalignment Malfunction | |
| C1A8C46 | Main Microcomputer in Front Radar Sensor Calibration/Parameter Memory Failure | |
| C1A8D1C | Power Supply Circuit in Front Radar Sensor Circuit Voltage Out of Range | |
| C1A9000 | Malfunction of Millimeter-wave Circuit in Front Radar Sensor | |
| C1A9100 | Malfunction of Acceleration Sensor in Front Radar Sensor | |
| U010487 | Lost Communication with Cruise Control Module Missing Message | |
| U030557 | Software Incompatibility with Cruise Control Module Invalid/Incompatible Software Component | |
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Vehicle Control History
VEHICLE CONTROL HISTORY NOTICE: When checking the Vehicle Control History, make sure to record the output codes. Then, clear the Vehicle Control History (RoB) and check it again. CHECK VEHICLE CONTROL
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
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
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Checking Monitor Status
CHECKING MONITOR STATUS The purpose of the monitor result (mode 06) is to allow access to the results of on-board diagnostic monitoring tests of specific components/systems that are not continuously monitored. Examples are catalysts and evaporative emissions (EVAP) systems. The monitor result allows
Installation
INSTALLATION PROCEDURE 1. INSTALL ACCELERATION SENSOR ASSEMBLY LH (for LH Side) (a) Install the acceleration sensor assembly LH with the 2 nuts. Torque: 13 N·m {133 kgf·cm, 10 ft·lbf} NOTICE:
Avoid any impact to the acceleration sensor assembly LH.
Do not drop the acceleration sensor a
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