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DTC P0615:16 [START STOP UNIT]

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2016 – MX-5 – Body and Accessories

DTC P0615:16 [START STOP UNIT]

Description

Starter relay circuit malfunction

Detection condition

  • Start stop unit detects that the starter relay circuit voltage that is less than the specification for 0.05 s or more during cranking.

Fail-safe

Not applicable

Possible cause

  • Starter relay malfunction

  • Start stop unit connector or terminal malfunction

  • Short to ground in wiring harness between starter relay terminal A and start stop unit terminal 2V

  • Start stop unit malfunction

Diagnostic Procedure

Step

Inspection

Action

1

INSPECT STARTER RELAY

Yes

Go to the next step.

No

Replace the starter relay, then go to Step 4.

(See RELAY LOCATION.)

2

INSPECT START STOP UNIT CONNECTOR CONDITION

  • Disconnect the start stop unit connector.

  • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

  • Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 4.

3

INSPECT STARTER RELAY CIRCUIT FOR SHORT TO GROUND

  • Verify that the starter relay is removed.

  • Verify that the start stop unit connector is disconnected.

  • Inspect for continuity between start stop unit terminal 2V (wiring harness-side) and body ground.

  • Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between starter relay terminal A and start stop unit terminal 2V.

    If there is a common connector:

  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

  • Repair or replace the malfunctioning part.

    If there is no common connector:

  • Repair or replace the wiring harness which has a short to ground.

Go to the next step.

No

Go to the next step.

4

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

Yes

Repeat the inspection from Step 1.

Go to the next step.

No

Go to the next step.

5

VERIFY IF OTHER DTCs DISPLAYED

  • Are any other DTCs displayed?

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [START STOP UNIT].)

No

DTC troubleshooting completed.

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