Toyota Tundra Service Manual: Front Radar Sensor (C1A10)

DESCRIPTION

C1A10 is output when there is an internal malfunction in the millimeter wave radar sensor assembly.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C1A10	Front Radar Sensor	While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, the internal malfunction of the millimeter wave radar sensor assembly continues for 0.3 seconds or more.	Millimeter wave radar sensor assembly

CAUTION / NOTICE / HINT

NOTICE:

When replacing the millimeter wave radar sensor assembly, make sure to replace it with a new one. If a device 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 as a result, a DTC may be stored.
When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.
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PROCEDURE

1.	REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY

(a) Replace the millimeter wave radar sensor assembly with a new one.

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(b) Perform millimeter wave radar sensor assembly adjustment.

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2.	CLEAR FOR DTCs (RADAR CRUISE 2)

(a) Clear the DTCs.

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END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE)

Toyota Tundra Service Manual > Rear View Monitor System(for Radio And Display Type): Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected ...

Toyota Tundra Owners Manual