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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5
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DTC DISPLAY [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)]

NOTE:

  • If power from the battery is interrupted, the climate control unit will go into a non-configured state because the memory for the configuration information is erased. If the ignition is switched ON (engine off) at this time, DTC U2300:55 is detected.

  • Normally, the configuration is re-performed within 6 s after the ignition is switched ON (engine off).

  • After performing the configuration, DTC U2300:55 will be cleared if the ignition is switched ON (engine off) after the ignition is switched off.

CMDTC Self Test

1. Switch the ignition off.
2. Switch the ignition ON (engine off) and wait for 6 s or more.
3. Switch the ignition off.
4. Connect the M-MDS to the DLC-2.
5. Expose the solar radiation sensor to natural sunlight.

NOTE:

  • If natural sunlight is not shone on the solar radiation sensor, the climate control unit determines a malfunction and indicates DTC “B1A63:13”.

6. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
a. Select “Self Test”.
b. Select “All CMDTCs”.
7. Verify the DTC according to the directions on the screen.

  • If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection.

8. After completion of repairs, clear all DTCs stored in the climate control unit. (See CLEARING DTC [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)

ODDTC Self Test

1. Switch the ignition off.
2. Switch the ignition ON (engine off) and wait for 6 s or more.
3. Switch the ignition off.
4. Connect the M-MDS to the DLC-2.
5. Expose the solar radiation sensor to natural sunlight.

NOTE:

  • If natural sunlight is not shone on the solar radiation sensor, the climate control unit determines a malfunction and indicates DTC “B1A63:13”.

6. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
a. Select “Self Test”.
b. Select “Modules”.
c. Select “EATC”.
7. Verify the DTC according to the directions on the screen.

  • If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection.

8. After completion of repairs, clear all DTCs stored in the climate control unit. (See CLEARING DTC [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)
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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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