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DTC U0420:00/U0420:82/U0420:83 [DSC HU/CM]

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2016 – MX-5 – Brakes

DTC U0420:00/U0420:82/U0420:83 [DSC HU/CM]

DTC

U0420:00

Signal error from EPS control module

U0420:82

U0420:83

DETECTION CONDITION

  • Error detected in signal from EPS control module via CAN communication.

FAIL-SAFE FUNCTION

POSSIBLE CAUSE

  • EPS control module malfunction

SYSTEM WIRING DIAGRAM

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY EPS CONTROL MODULE DTC

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [EPS CONTROL MODULE].)

DTC troubleshooting completed, then go to the next step.

No

Go to the next step.

2

VERIFY DTC TROUBLESHOOTING COMPLETED

Yes

Repeat the inspection from Step1

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

(See ELECTRIC POWER STEERING (EPS) CONTROL MODULE REMOVAL/INSTALLATION.)

No

Go to the next step.

3

VERIFY NO DTC IS PRESENT

  • Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [DSC HU/CM].)

No

DTC troubleshooting completed.

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