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DTC B14F2:78 [VEHICLE CONTROL MODULE]

id1502c5047900

Outline

System malfunction location

Rear side radar sensor optical axis deviation

Detection condition

•  The vehicle control module (VCM) detects that the rear side radar sensor (LH) or (RH) determined an axis deviation for 10 s.

Fail-safe

(See DTC TABLE [VEHICLE CONTROL MODULE (E)].)

Possible cause

•  Rear bumper malfunction

―  Damage (including repairs using putty application)

―  Dirt

―  Application of stickers (including transparent types)

―  Freezing

•  Rear bumper poor installation

•  Rear side radar sensor poor installation

•  Rear side radar sensor aiming adjustment malfunction (optical axis deviation)

•  Rear side radar sensor (RH) malfunction

•  Rear side radar sensor (LH) malfunction

•  Vehicle control module (VCM) malfunction (built into body control module (BCM))

System wiring diagram

Not applicable

Connector diagram

Not applicable

System malfunction location	Rear side radar sensor optical axis deviation
Detection condition	• The vehicle control module (VCM) detects that the rear side radar sensor (LH) or (RH) determined an axis deviation for 10 s.
Fail-safe	(See DTC TABLE [VEHICLE CONTROL MODULE (E)].)
Possible cause	• Rear bumper malfunction ― Damage (including repairs using putty application) ― Dirt ― Application of stickers (including transparent types) ― Freezing • Rear bumper poor installation • Rear side radar sensor poor installation • Rear side radar sensor aiming adjustment malfunction (optical axis deviation) • Rear side radar sensor (RH) malfunction • Rear side radar sensor (LH) malfunction • Vehicle control module (VCM) malfunction (built into body control module (BCM))
System wiring diagram	Not applicable
Connector diagram	Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action

1

INSPECT VEHICLE CONTROL MODULE (VCM) AND BODY CONTROL MODULE (BCM) FOR MALFUNCTION

•  Perform the DTC inspection for the vehicle control module (VCM) and the body control module (BCM).
(See DTC INSPECTION.)

•  Is a DTC related to an internal malfunction displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See DTC TABLE [VEHICLE CONTROL MODULE (E)].)

(See DTC TABLE [BODY CONTROL MODULE (BCM) (E)].)

No

Go to the next step.

2

INSPECT REAR SIDE RADAR SENSOR (LH) FOR MALFUNCTION

•  Perform the DTC inspection for the rear side radar sensor (LH).
(See DTC INSPECTION.)

•  Is a DTC displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See DTC TABLE [REAR SIDE RADAR SENSOR (E)].)

No

Go to the next step.

3

INSPECT REAR SIDE RADAR SENSOR (RH) FOR MALFUNCTION

•  Perform the DTC inspection for the rear side radar sensor (RH).
(See DTC INSPECTION.)

•  Is a DTC displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See DTC TABLE [REAR SIDE RADAR SENSOR (E)].)

No

Go to the next step.

4

VERIFY REAR BUMPER CONDITION

•  Inspect the rear side radar sensor installation surface of the rear bumper for the following.

―  Damage (including repairs using putty application)

―  Dirt

―  Application of stickers (including transparent types)

―  Freezing

•  Is the rear bumper condition normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

(See REAR BUMPER REMOVAL/INSTALLATION [(E)].)

5

VERIFY IF REAR BUMPER IS INSTALLED POORLY

•  Verify the rear bumper installation condition.
(See REAR BUMPER REMOVAL/INSTALLATION [(E)].)

•  Is the installation condition normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

(See REAR BUMPER REMOVAL/INSTALLATION [(E)].)

6

VERIFY IF REAR SIDE RADAR SENSOR IS INSTALLED POORLY

•  Verify the rear side radar sensor installation condition.
(See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)

•  Is the installation condition normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning location and perform the repair completion verification.

(See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)

7

PERFORM REAR SIDE RADAR SENSOR RADAR AIMING

•  Perform the rear side radar sensor radar aiming.
(See FRONT SIDE/REAR SIDE RADAR SENSOR AIMING.)

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Perform the DTC inspection for the vehicle control module (VCM).
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Replace the rear side radar sensor (LH), then go to the next step.

(See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)

No

Go to repair completion verification 2.

8

INSPECT REAR SIDE RADAR SENSOR (RH) FOR MALFUNCTION DEPENDING ON REPEATABILITY

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Perform the DTC inspection for the vehicle control module (VCM).
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, replace the rear side radar sensor (RH) and perform the repair completion verification.

(See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)

No

Go to repair completion verification 2.

Repair completion verification 1

VERIFY THAT VEHICLE IS REPAIRED

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Clear the DTC recorded in the memory.
(See CLEARING DTC.)

•  Perform the DTC inspection for the vehicle control module (VCM).
(See DTC INSPECTION.)

•  Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, perform the diagnosis from Step 1.

•  If the malfunction recurs, replace the body control module (BCM), then go to the next step.
(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [(E)].)

No

Go to the next step.

Repair completion verification 2

VERIFY IF OTHER DTC IS DISPLAYED

•  Perform the DTC inspection.
(See DTC INSPECTION.)

•  Are any other DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	INSPECT VEHICLE CONTROL MODULE (VCM) AND BODY CONTROL MODULE (BCM) FOR MALFUNCTION • Perform the DTC inspection for the vehicle control module (VCM) and the body control module (BCM). (See DTC INSPECTION.) • Is a DTC related to an internal malfunction displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [VEHICLE CONTROL MODULE (E)].) (See DTC TABLE [BODY CONTROL MODULE (BCM) (E)].)
1		No	Go to the next step.
2	INSPECT REAR SIDE RADAR SENSOR (LH) FOR MALFUNCTION • Perform the DTC inspection for the rear side radar sensor (LH). (See DTC INSPECTION.) • Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [REAR SIDE RADAR SENSOR (E)].)
2		No	Go to the next step.
3	INSPECT REAR SIDE RADAR SENSOR (RH) FOR MALFUNCTION • Perform the DTC inspection for the rear side radar sensor (RH). (See DTC INSPECTION.) • Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [REAR SIDE RADAR SENSOR (E)].)
3		No	Go to the next step.
4	VERIFY REAR BUMPER CONDITION • Inspect the rear side radar sensor installation surface of the rear bumper for the following. ― Damage (including repairs using putty application) ― Dirt ― Application of stickers (including transparent types) ― Freezing • Is the rear bumper condition normal?	Yes	Go to the next step.
4		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See REAR BUMPER REMOVAL/INSTALLATION [(E)].)
5	VERIFY IF REAR BUMPER IS INSTALLED POORLY • Verify the rear bumper installation condition. (See REAR BUMPER REMOVAL/INSTALLATION [(E)].) • Is the installation condition normal?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See REAR BUMPER REMOVAL/INSTALLATION [(E)].)
6	VERIFY IF REAR SIDE RADAR SENSOR IS INSTALLED POORLY • Verify the rear side radar sensor installation condition. (See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.) • Is the installation condition normal?	Yes	Go to the next step.
6		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)
7	PERFORM REAR SIDE RADAR SENSOR RADAR AIMING • Perform the rear side radar sensor radar aiming. (See FRONT SIDE/REAR SIDE RADAR SENSOR AIMING.) • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Replace the rear side radar sensor (LH), then go to the next step. (See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)
7		No	Go to repair completion verification 2.
8	INSPECT REAR SIDE RADAR SENSOR (RH) FOR MALFUNCTION DEPENDING ON REPEATABILITY • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the rear side radar sensor (RH) and perform the repair completion verification. (See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)
8		No	Go to repair completion verification 2.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction recurs, replace the body control module (BCM), then go to the next step. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [(E)].)
Repair completion verification 1		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTC IS DISPLAYED • Perform the DTC inspection. (See DTC INSPECTION.) • Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
Repair completion verification 2		No	DTC troubleshooting completed.