DTC

C0051:67

Abnormal message from EPS control module

DETECTION CONDITION

• C0051:67

• DSC HU/CM receives steering angle neutral position reset signal after neutral position was set.

FAIL-SAFE FUNCTION

• Illuminates the TCS/DSC indicator light and master warning light*¹.

• Inhibits the TCS, DSC, Mazda Radar Cruise Control (MRCC)*², Smart City Brake Support (SCBS)*² controls.

*¹: Vehicles with Smart City Brake Support (SCBS).

*²: If equipped.

POSSIBLE CAUSE

• EPS CM malfunction

• Signal errors from EPS CM due to rough road driving

SYSTEM WIRING DIAGRAM

Not applicable

STEP

INSPECTION

ACTION

1

• Switch the ignition off.

• Using the M-MDS, perform the DTC inspection for the EPS CM.

  (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)

• Is the DTC displayed?

Yes

Go to applicable DTC inspection.

(See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)

No

Go to the next step.

2

• Clear the DTCs from the memory.

  (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)

• Start the engine and drive the vehicle at 6 km/h {4 mph} or more.

• Are the same DTCs present?

Yes

Repeat the inspection from Step 1.

If the malfunction recurs, replace the EPS CM, then go to the next step.

(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

No

Go to the next step.

3

• Are any other DTCs output?

Yes

Go to the applicable DTC inspection.

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

No

DTC troubleshooting completed.