A mismatch between current gear position signal
transmitted from TCM via CAN communication
and gear position calculated by distance sensor
continues for approximately 11 minutes or more.

• Input speed sensor.
• Vehicle speed sensor CVT (output speed sen-

sor).

• TCM.

DAS

C1A16 RADAR BLOCKED OR STAINED

DAS-145

< DTC/CIRCUIT DIAGNOSIS >

[DRIVER ASSISTANCE SYSTEM]

C1A16 RADAR BLOCKED OR STAINED

DTC Logic

INFOID:0000000011277303

DTC DETECTION LOGIC

NOTE:

DTC “C1A16” may be detected under the following conditions. (Explain to the customer about the difference

between the contamination detection function and the indication when the malfunction is detected and tell

them “This is not a malfunction”).

• When contamination or foreign materials adhere to the distance sensor area of the front bumper.

• When driving while it is snowing or when frost forms on the distance sensor area of the front bumper.

• When distance sensor area of the front bumper is temporarily fogged.

Diagnosis Procedure

INFOID:0000000011277304

NOTE:

After distance sensor alignment is performed, the vehicle must be driven at a speed of 4.5 MPH (7.2 km/h) or

higher for a minimum of 2 minutes before DTC C1A16 can be cleared.

VISUAL CHECK 1

Check for contamination and foreign matter on the distance sensor area of the front bumper.
Does contamination or foreign material exist?

YES

>> Clean the contamination and foreign material on the distance sensor area of the front bumper.

>> GO TO 2.

VISUAL CHECK 2

1. Remove the front bumper. Refer to

EXT-17, "Removal and Installation"

2. Check distance sensor for contamination and foreign materials.
Does contamination or foreign material exist?

YES

>> Clean the contamination and foreign material from the distance sensor.

>> GO TO 3.

VISUAL CHECK 3

1. Remove the front bumper. Refer to

EXT-17, "Removal and Installation"

2. Check distance sensor and distance sensor bracket for damage or looseness.
Does damage or looseness exist?

YES

>> 1. Repair or replace effected components. Refer to

DAS-170, "Removal and Installation"

2. Perform distance sensor alignment. Refer to

DAS-72, "Description"

3. Perform action test. Refer to

DAS-82, "FCW : Description"

>> GO TO 4.

INTERVIEW

1. Ask if there is any trace of contamination or foreign materials adhering to the distance sensor area of the

front bumper.

2. Ask if the distance sensor area of the front bumper was frosted during driving or if vehicle was driven in

snow.

3. Ask if distance sensor area of the front bumper was temporarily fogged. (Windshield glass may also tend

to fog, etc.)

Are any of the above conditions seen?

YES

>> Explain to the customer about the difference between the contamination detection function and an

actual malfunction. Inform them “this is not a malfunction”.

>> 1. Perform distance sensor alignment. Refer to

DAS-72, "Description"

2. Perform action test. Refer to

DAS-82, "FCW : Description"

3. GO TO 5.

CONSULT Display

DTC detecting condition

Possible causes

RADAR BLOCKED
[C1A16]

If any stain occurs to distance sensor body window.

• Stain or foreign materials deposited.
• Cracks or scratches exist.

DAS-146

< DTC/CIRCUIT DIAGNOSIS >

[DRIVER ASSISTANCE SYSTEM]

C1A16 RADAR BLOCKED OR STAINED

CHECK DISTANCE SENSOR SELF-DIAGNOSIS RESULTS

Check if “C1A16” is detected as the current malfunction in “Self Diagnostic Result” of “LASER/RADAR”.
Is “C1A16” detected?

YES

>> Replace distance sensor. Refer to

DAS-170, "Removal and Installation"

>> Inspection End.

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