Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

DTC P081D:2F [START STOP UNIT]

< Previous Next >

2016 – MX-5 – Body and Accessories

DTC P081D:2F [START STOP UNIT]

Description

Neutral switch signal mismatch

Detection condition

  • Start stop unit detects that the vehicle speed changes from 0 km/h {0 mph} to 10 km/h {6.2 mph} for a continuous 5 times or more even though the neutral signal from the PCM is being received with the ignition switched ON (engine off or on).

Fail-safe

  • Perform the control with neutral switch signal turned off.

Possible cause

  • DTCs are stored in the PCM.

  • Neutral switch malfunction

  • PCM malfunction

  • Start stop unit malfunction

System wiring diagram

Not applicable

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY PCM DTCs

Yes

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

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

No

Go to the next step.

2

INSPECT NEUTRAL SWITCH

Yes

Go to the next step.

No

Replace the neutral switch, then go to Step 4.

(See NEUTRAL SWITCH REMOVAL/INSTALLATION [M66M-D].)

3

VERIFY IF MALFUNCTIONING LOCATION IS PCM DEPENDING ON REPEATABILITY

  • Clear the DTC for the start stop unit using the M-MDS.

    (See CLEARING DTC [START STOP UNIT].)

  • Perform the following work 5 times or more.

    • Drive the vehicle.

    • Vehicle speed changes from 0 km/h {0 mph} to 10 km/h {6.2 mph}.

  • Retrieve the start stop unit DTCs using the M-MDS.

    (See DTC INSPECTION [START STOP UNIT].)

  • Is the same DTC displayed?

Yes

Replace the PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

No

Go to Step 5.

4

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

  • Clear the DTC for the start stop unit using the M-MDS.

    (See CLEARING DTC [START STOP UNIT].)

  • Perform the following work 5 times or more.

    • Drive the vehicle.

    • Vehicle speed changes from 0 km/h {0 mph} to 10 km/h {6.2 mph}.

  • Retrieve the start stop unit DTCs using the M-MDS.

    (See DTC INSPECTION [START STOP UNIT].)

  • Is the same DTC displayed?

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.

< Previous Next >

© 2014 Mazda North American Operations, U.S.A.