DTC U3000:04 [VEHICLE CONTROL MODULE (V/C-MODULE)]

id0102i0007100

System malfunction location

Mazda radar cruise control (MRCC) system operation malfunction

Detection condition

•  The MRCC/SBS brake is operated excessively

Fail-safe

•  Inhibits the mazda radar cruise control (MRCC) system control

•  Inhibits the smart brake support (SBS) system control

•  Inhibits the distance recognition support system (DRSS) control

Possible cause

•  Accelerator pedal was operated repeatedly while driving using MRCC

•  Dirt on radiator grille ornament, modifications, application of stickers (including transparent types), scratches, or damage

•  Dirt on radar sensor, scratches, or damage

•  Impact is transmitted to area around radar sensor

•  Incorrect installation of radar sensor

•  Radar sensor aiming adjustment error

•  Radar sensor malfunction

•  DSC HU/CM malfunction

•  SAS control module malfunction

•  Signal error in circuit between radar sensor and vehicle control module (V/C-module)

•  Vehicle control module (V/C-module) malfunction

System wiring diagram

•  Not applicable

System malfunction location	Mazda radar cruise control (MRCC) system operation malfunction
Detection condition	• The MRCC/SBS brake is operated excessively
Fail-safe	• Inhibits the mazda radar cruise control (MRCC) system control • Inhibits the smart brake support (SBS) system control • Inhibits the distance recognition support system (DRSS) control
Possible cause	• Accelerator pedal was operated repeatedly while driving using MRCC • Dirt on radiator grille ornament, modifications, application of stickers (including transparent types), scratches, or damage • Dirt on radar sensor, scratches, or damage • Impact is transmitted to area around radar sensor • Incorrect installation of radar sensor • Radar sensor aiming adjustment error • Radar sensor malfunction • DSC HU/CM malfunction • SAS control module malfunction • Signal error in circuit between radar sensor and vehicle control module (V/C-module) • Vehicle control module (V/C-module) malfunction
System wiring diagram	• Not applicable

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY AREA AROUND RADIATOR GRILLE ORNAMENT

•  Visually inspect the surface of the radiator grille ornament.

•  Under the following conditions?

―  Dirt is adhering to radiator grille ornament.

―  Foreign material (reflective object) is adhering to radiator grille ornament

―  Radiator grille ornament is scratched or damaged

Yes

Return the surfaces of the radiator grille ornament to their normal condition, then go to Step 7.

No

Go to the next step.

2

VERIFY AREA AROUND RADER SENSOR

•  Remove front bumper.
(See FRONT BUMPER REMOVAL/INSTALLATION.)

•  Visually inspect the surface of the radar sensor.

•  Under the following conditions?

―  Dirt is adhering to radar sensor

―  Foreign material (reflective object) is adhering to radar sensor

―  Radar sensor is scratched or damaged

Yes

Return the radar sensor to their normal condition, then go to Step 7.

No

Go to the next step.

3

VERIFY RADAR SENSOR BRACKET

•  Verify that there is no bending or damage on the radar sensor bracket.

•  Is there bending or damage on the radar sensor bracket?

Yes

Replace the radar sensor bracket and perform the aiming adjustment.

(See RADAR SENSOR DISASSMBLY/ASSEMBLY [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].)

(See RADAR SENSOR AIMING [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].)

Then go to Step 7.

No

Go to the next step.

4

PERFORM DTC INSPECTION FOR DSC HU/CM

•  Perform the DSC HU/CM DTC inspection using the M-MDS.
(See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)

Then go to Step 7.

No

Go to the next step.

5

PERFORM DTC INSPECTION FOR SAS CONTROL MODULE

•  Perform the SAS control module DTC inspection using the M-MDS.
(See DTC INSPECTION.)

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE.)

Then go to Step 7.

No

Go to the next step.

6

PERFORM DTC INSPECTION FOR VEHICLE CONTROL MODULE (V/C-MODULE)

•  Clear vehicle control module (V/C-module) DTCs using the M-MDS.
(See CLEARING DTC [VEHICLE CONTROL MODULE (V/C-MODULE)].)

•  Switch the ignition ON (engine on).

•  Perform the vehicle control module (V/C-module) DTC inspection using the M-MDS.
(See DTC INSPECTION [VEHICLE CONTROL MODULE (V/C-MODULE)].)

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [VEHICLE CONTROL MODULE (V/C-MODULE)].)

Then go to the next step.

No

Go to the next step.

7

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

•  Clear vehicle control module (V/C-module) DTCs using the M-MDS.
(See CLEARING DTC [VEHICLE CONTROL MODULE (V/C-MODULE)].)

•  Switch the ignition ON (engine on).

•  Perform the vehicle control module (V/C-module) DTC inspection using the M-MDS.
(See DTC INSPECTION [VEHICLE CONTROL MODULE (V/C-MODULE)].)

•  Is the same DTC present?

Yes

Repeat the inspection from Step 1.

•  If the malfunction recurs, replace the vehicle control module (V/C-module).
(See VEHICLE CONTROL MODULE (V/C-MODULE) REMOVAL/INSTALLATION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].)

Go to the next step.

No

Go to the next step.

8

VERIFY THAT NO OTHER DTCs ARE PRESENT

•  Verify other DTCs displayed.

•  Are any other DTCs output?

Yes

Perform the corresponding DTC inspection.

No

DTC troubleshooting completed.

Step	Inspection		Action
1	VERIFY AREA AROUND RADIATOR GRILLE ORNAMENT • Visually inspect the surface of the radiator grille ornament. • Under the following conditions? ― Dirt is adhering to radiator grille ornament. ― Foreign material (reflective object) is adhering to radiator grille ornament ― Radiator grille ornament is scratched or damaged	Yes	Return the surfaces of the radiator grille ornament to their normal condition, then go to Step 7.
1		No	Go to the next step.
2	VERIFY AREA AROUND RADER SENSOR • Remove front bumper. (See FRONT BUMPER REMOVAL/INSTALLATION.) • Visually inspect the surface of the radar sensor. • Under the following conditions? ― Dirt is adhering to radar sensor ― Foreign material (reflective object) is adhering to radar sensor ― Radar sensor is scratched or damaged	Yes	Return the radar sensor to their normal condition, then go to Step 7.
2		No	Go to the next step.
3	VERIFY RADAR SENSOR BRACKET • Verify that there is no bending or damage on the radar sensor bracket. • Is there bending or damage on the radar sensor bracket?	Yes	Replace the radar sensor bracket and perform the aiming adjustment. (See RADAR SENSOR DISASSMBLY/ASSEMBLY [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].) (See RADAR SENSOR AIMING [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].) Then go to Step 7.
3		No	Go to the next step.
4	PERFORM DTC INSPECTION FOR DSC HU/CM • Perform the DSC HU/CM DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) Then go to Step 7.
4		No	Go to the next step.
5	PERFORM DTC INSPECTION FOR SAS CONTROL MODULE • Perform the SAS control module DTC inspection using the M-MDS. (See DTC INSPECTION.) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE.) Then go to Step 7.
5		No	Go to the next step.
6	PERFORM DTC INSPECTION FOR VEHICLE CONTROL MODULE (V/C-MODULE) • Clear vehicle control module (V/C-module) DTCs using the M-MDS. (See CLEARING DTC [VEHICLE CONTROL MODULE (V/C-MODULE)].) • Switch the ignition ON (engine on). • Perform the vehicle control module (V/C-module) DTC inspection using the M-MDS. (See DTC INSPECTION [VEHICLE CONTROL MODULE (V/C-MODULE)].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [VEHICLE CONTROL MODULE (V/C-MODULE)].) Then go to the next step.
6		No	Go to the next step.
7	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Clear vehicle control module (V/C-module) DTCs using the M-MDS. (See CLEARING DTC [VEHICLE CONTROL MODULE (V/C-MODULE)].) • Switch the ignition ON (engine on). • Perform the vehicle control module (V/C-module) DTC inspection using the M-MDS. (See DTC INSPECTION [VEHICLE CONTROL MODULE (V/C-MODULE)].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the vehicle control module (V/C-module). (See VEHICLE CONTROL MODULE (V/C-MODULE) REMOVAL/INSTALLATION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].) Go to the next step.
7		No	Go to the next step.
8	VERIFY THAT NO OTHER DTCs ARE PRESENT • Verify other DTCs displayed. • Are any other DTCs output?	Yes	Perform the corresponding DTC inspection.
8		No	DTC troubleshooting completed.