Lexus NX: 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 | Main Microcomputer in Front Radar Sensor Calibration/Parameter Memory Failure | When the power switch is on (IG), the millimeter wave radar sensor assembly detects an internal memory malfunction | Millimeter wave radar sensor assembly |
| C1A8D1C | Power Supply Circuit in Front Radar Sensor Circuit Voltage Out of Range | When the power switch is on (IG), the millimeter wave radar sensor assembly detects a power source circuit malfunction | Millimeter wave radar sensor assembly |
| C1A9000 | Malfunction of Millimeter-wave Circuit in Front Radar Sensor | When the power switch is on (IG), the millimeter wave radar sensor assembly detects an internal millimeter wave circuit malfunction | Millimeter wave radar sensor assembly |
| C1A9100 | Malfunction of Acceleration Sensor in Front Radar Sensor | When the power switch is on (IG), the millimeter wave radar sensor assembly detects an internal acceleration sensor malfunction | Millimeter wave radar sensor assembly |
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 has been replaced with a new one, it is necessary to perform millimeter wave radar sensor assembly adjustment and front radar acceleration sensor calibration, and to clear the vehicle control history.
Click here
.gif)
PROCEDURE
| 1. | REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Replace the millimeter wave radar sensor assembly with a new one.
Click here
| NEXT | .gif) | END |
READ NEXT:
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
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 AIR CLEANER CAP AND HOSE *2 NO. 1 ENGINE COVER SUB-ASSEMBLY *3 FUEL VAPOR FEED HOSE *4 NO. 2 FUEL VAPOR FEED HOSE ILLUSTRATION *1 THROTTLE WITH MOTOR BODY ASSEMBLY *2 NO. 2 WATER BY-PASS HOSE *3 NO. 3 WATER BY-PASS HOSE *4 GASKET
Removal
REMOVAL PROCEDURE 1. REMOVE TIMING CHAIN COVER ASSEMBLY Click here 2. REMOVE EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY Click here 3. REMOVE THROTTLE WITH MOTOR BODY ASSEMBLY Click here 4. REMOVE WATER BY-PASS PIPE Click here 5. REMOVE EGR COOLER ASSEMBLY Click here 6. REMOVE EGR VALVE ASSE
