Toyota Camry (XV70): 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 ignition switch is ON, 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 ignition switch is ON, 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 ignition switch is ON, 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 ignition switch is ON, 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 beam axis alignment and to clear the vehicle control history. Before performing the Driving Adjustment, make sure to read Before Starting Driving Adjustment.
HINT:
Beam axis alignment of the millimeter wave radar sensor assembly can be performed using either Triangle Target, Flat Surface Target or Driving Adjustment.
Triangle Target: Click here
.gif)
Flat Surface Target: Click here
Driving Adjustment: Click here
PROCEDURE
|
1. | REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
Click here
| NEXT | .gif) | END |
READ NEXT:
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 cam
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 recogni
SEE MORE:
BSM function - BSM (Blind Spot
Monitor)
The BSM function uses radar sensors to detect the following vehicles
traveling in an adjacent lane in the area that is usually not reflected in
the outside rear view mirror (the blind spot), and advises the driver of
the presence of such vehicles via the indicators on the outside rear
view mirro
Left Rear Wheel Speed Sensor Circuit Intermittent (C050C1F)
DESCRIPTION Refer to DTC C050C12 Click here
DTC No. Detection Item
DTC Detection Condition Trouble Area
C050C1F Left Rear Wheel Speed Sensor Circuit Intermittent
The speed sensor signal is excessively noisy.
The calculated change in wheel speed is more t
