MX5 mk4 Manual
Home bodyshop manual wiring diagram workshop manual service highlights transmission overhaul

Knowledge Base

Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5
Home

 

< Previous   Next >

DTC U2100:00 [START STOP UNIT]

Description

Start stop unit configuration not completed

Detection condition

  • Start stop unit configuration not completed.

Fail-safe

  • Although the engine cannot be started with the ignition switched off or to ACC, if the ignition is switched ON (engine off), the engine can be started.

    NOTE:

    • If the start stop unit configuration is not completed, the start stop unit setting will be for an AT vehicle.

    • For MT vehicles, if the start stop unit cannot receive the CAN signal, the engine cannot be started because the vehicle cannot be recognized as a MT vehicle.

Possible cause

NOTE:

  • This DTC is output if configuration is not performed after replacing the start stop unit.

  • Start stop unit configuration error

  • Start stop unit malfunction

System wiring diagram

Not applicable

Diagnostic Procedure

Step

Inspection

Action

1

PERFORM START STOP UNIT CONFIGURATION (USING AS-BUILT DATA)
  • Using the M-MDS, perform the start stop unit configuration (using As-Built data).

    (See START STOP UNIT CONFIGURATION (USING AS-BUILT DATA).)

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

    (See CLEARING DTC [START STOP UNIT].)

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

    (See DTC INSPECTION [START STOP UNIT].)

  • Is the same DTC displayed?

Yes

Using the M-MDS, perform the start stop unit configuration (using As-Built data) again, then go to the next step.

(See START STOP UNIT CONFIGURATION (USING AS-BUILT DATA).)

No

Go to Step 3.

2

VERIFY THAT REPAIRS HAVE BEEN COMPLETED
  • Clear the DTC for the start stop unit using the M-MDS.

    (See CLEARING DTC [START STOP UNIT].)

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

    (See DTC INSPECTION [START STOP UNIT].)

  • Is the same DTC displayed?

Yes

Replace the start stop unit, then go to the next step.

(See START STOP UNIT REMOVAL/INSTALLATION.)

No

Go to the next step.

3

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 >
 

Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

COPYRIGHT NOTICE:
This fan site is not affiliated with Mazda, and is intended for personal, or commercial use only. The content of our web pages is for general information purposes only and is presented “as is”. We give no assurance or warranty regarding the accuracy of the contents. Readers should do their due diligence and seek the advice of an appropriately certified automotive technician before attempting any steps on this site. Original content provided by Mazda North America. The content of the manual is copyright under DMCA to: full.metal.resistor@gmail.com
LIMITATION OF LIABILITY:
We accept no responsibility for errors, inaccuracies, or omissions found on these pages. Additionally, we hereby exclude liability for any demands, claims, damages or losses of any kind with regard to any content or information provided on our web-site, including but not limited to incidental or consequential damages, direct or indirect loss, compensatory damages, loss of profits, or otherwise. By using this manual you assume full liablity for any procedures carried out on your vehicle, and are responsible for the vehicle remaining road legal and safe.
Site design © MX5 Docs 2019
Privacy policy
Cookies
X
We use cookies to improve your experience on
our site. By using our site you consent to cookies.
Learn more
I Agree