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DTC U0315:00 [PCM (SKYACTIV-G 2.0)]

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2016 – MX-5 – Engine

DTC U0315:00 [PCM (SKYACTIV-G 2.0)]

DTC U0315:00

DSC HU/CM error

DETECTION CONDITION

  • When any of the following conditions is met:

    • CAN communication line malfunction between DSC HU/CM and PCM

    • DSC HU/CM internal malfunction

    Diagnostic support note

  • This is a continuous monitor (other).

  • The check engine light does not illuminate.

  • FREEZE FRAME DATA is not available.

  • Snapshot data is available.

  • DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

  • CAN drive error (DSC HU/CM or PCM)

  • CAN communication line malfunction between DSC HU/CM and PCM

    • DSC HU/CM terminal C—PCM terminal 2AK

    • DSC HU/CM terminal D—PCM terminal 2AL

  • DSC HU/CM connector or terminals malfunction

  • PCM connector or terminals malfunction

  • DSC HU/CM malfunction

  • PCM malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1

RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION

NOTE:

  • Recording can be facilitated using the screen capture function of the PC.

  • Record the snapshot data on the repair order.

Go to the next step.

2

VERIFY RELATED REPAIR INFORMATION AVAILABILITY

  • Verify related Service Bulletins and/or on-line repair information availability.

  • Is any related repair information available?

Yes

Perform repair or diagnosis according to the available repair information.

  • If the vehicle is not repaired, go to the next step.

No

Go to the next step.

3

VERIFY DTC FOR MODULE COMMUNICATION

Yes

Go to the applicable PENDING CODE or DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-G 2.0)].)

No

Go to the next step.

4

VERIFY DSC HU/CM DTC

Yes

Go to the applicable DTC inspection.

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

No

Go to the next step.

5

INSPECT DSC HU/CM CONNECTOR CONDITION

  • Switch the ignition off.

  • Disconnect the DSC HU/CM connector.

  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

  • Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 7.

No

Go to the next step.

6

INSPECT PCM CONNECTOR CONDITION

  • Disconnect the PCM connector.

  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

  • Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to the next step.

No

Go to the next step.

7

VERIFY DTC TROUBLESHOOTING COMPLETED

Yes

Repeat the inspection from Step 1.

Go to the next step.

No

Go to the next step.

8

VERIFY AFTER REPAIR PROCEDURE

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-G 2.0)].)

No

DTC troubleshooting completed.

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