Lexus NX: 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

 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

 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

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 Components

COMPONENTS ILLUSTRATION *A w/o Performance Damper *B w/ Performance Damper *1 AIR CLEANER CASE SUB-ASSEMBLY *2 AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY *3 OUTER COWL TOP PANEL *4 SUSPENSION TOWER DAMPER N*m (kgf*cm, ft.*lbf): Specified torque - - ILLUSTRATI

 Generator Position Sensor Circuit (P0A4B-253-P0A4D-255)

DTC SUMMARY MALFUNCTION DESCRIPTION These DTCs indicate the resolver output signal is abnormal. The cause of this malfunction may be one of the following: Area Main Malfunction Description Step Inverter low-voltage circuit The connectors are not connected properly 2 Generator reso

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