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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5
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DTC B1D19:64 [CONNECTIVITY MASTER UNIT]

Description

Incompatible disc inserted

Detection condition

  • With the ignition switched ON (engine on or off), the connectivity master unit (CMU) detects a disc having a data format that is incompatible with the CD player.

Fail-safe

Eject a disc.

Possible cause

  • Disc malfunction or malfunction due to customer use method

    • Use of incompatible disc

      • Data format other than music data (CD-DA)/MP3/WMA (Windows Media Audio)/AAC (Advance Audio Coding) is stored in the disc.

    • Use of blank disc

    • Disc insertion direction mistaken

    • Disc scratched or dirty

  • CD player internal malfunction

System wiring diagram

Not applicable

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY IF MALFUNCTIONING LOCATION IS DISC
  • After obtaining the customer's consent, insert a disc that was not used when the malfunction occurred into the CD player.

  • Does the disc play normally?

Yes

System is normal. (Explain to the customer that there is a malfunction in the disc or malfunction due to the customer use method.)

No

Go to the next step.

2

VERIFY IF MALFUNCTIONING LOCATION IS CD PLAYER DEPENDING ON REPEATABILITY
  • Clear the DTC for the connectivity master unit (CMU) using the M-MDS.

    (See CLEARING DTC [CONNECTIVITY MASTER UNIT].)

  • Perform diagnostic assist code “01” CD player inspection.

    (See DIAGNOSTIC ASSIST FUNCTION [CONNECTIVITY MASTER UNIT].)

  • Retrieve the connectivity master unit (CMU) DTCs using the M-MDS.

    (See DTC INSPECTION [CONNECTIVITY MASTER UNIT].)

  • Is the same DTC displayed?

Yes

Replace the CD player, then go to the next step.

(See CD PLAYER 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 [CONNECTIVITY MASTER UNIT].)

No

DTC troubleshooting completed.

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

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