NHTSA ID Number: 10228662
Manufacturer Communication Number: 07-004-22b
TSB/Document Date: 2023-01-05
Summary
Some customers may complain the A/C blows warm. This may be caused by one of two things. Cause 1: After accelerating in hot weather, the A/C blows warm air for a longer time than other models. This is caused by improper control software of the PCM not allowing the A/C compressor to resume properly after acceleration. During a hard acceleration above a certain throttle level opening, the PCM stops the A/C compressor operation for better acceleration. It then resumes the compressor operation after the acceleration. To eliminate this concern, the control software of the PCM has been modified. Cause 2: Insufficient cooling performance at ambient temperature of around 68 °F (20 °C) in daytime. This is caused when both the ambient temperature and the cabin temperature are at around 20 °C (68 °F), auto A/C set at around 20 °C (68 °F) may not cool down the cabin temperature properly. To eliminate this concern, control software of the dash-electrical supply unit (Dash-ESU) has been modified.
BULLETIN NOTES
This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red.
Previous TSBs:
Date(s) Issued:
07-004/22
10/10/22 and 09/23/22
07-006/20
12/07/20
APPLICABLE MODEL(S)/VINS
2019-2022 Mazda3 (Japan built) with VINS lower than JM1BP******516941 (produced before March 1, 2022)
2019-2022 Mazda3 (Mexico built) with VINS lower than 3MZBP******302558 (produced before February 27, 2022)
2020-2022 CX-30 with VINS lower than 3MVDM******414338 (produced before February 27, 2022)
NOTE: To identify vehicles with cylinder deactivation, examine the 8th digit of the VIN.
• L: 2.5L without cylinder deactivation
• M: 2.5L with cylinder deactivation
DESCRIPTION
Some customers may complain the A/C blows warm. This may be caused by one of two things.
• Cause 1: After accelerating in hot weather, the A/C blows warm air for a longer time than other models. This is
caused by improper control software of the PCM not allowing the A/C compressor to resume properly after
acceleration. During a hard acceleration above a certain throttle level opening, the PCM stops the A/C compressor
operation for better acceleration. It then resumes the compressor operation after the acceleration. To eliminate
this concern, the control software of the PCM has been modified.
• Cause 2: Insufficient cooling performance at ambient temperature of around 68 °F (20 °C) in daytime. This is
caused when both the ambient temperature and the cabin temperature are at around 20 °C (68 °F), auto A/C set
at around 20 °C (68 °F) may not cool down the cabin temperature properly. To eliminate this concern, control
software of the dash-electrical supply unit (Dash-ESU) has been modified.
Customers having this concern should have their vehicle repaired using the following repair procedure.
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01/03/2023 11:58 AM cciz
REPAIR PROCEDURE
1. Verify customer concern.
2. Perform one or both of the following reprogramming procedures, depending on the VIN and production date.
• Reprogram the PCM for the following vehicles (for Cause 1). Refer to MDARS ECU Reprogramming Procedure.
2019-2021 Mazda3 (Japan built) with VINS lower than JM1BP******319059 (produced before October 28,
2020)
2019-2021 Mazda3 (Mexico built) with VINS lower than 3MZBP******208291 (produced before October 30,
2020)
2020-2021 CX-30 with VINS lower than 3MVDM******231004 (produced before November 13, 2020)
○
○
○
• Reprogram the ESU for the following vehicles (for Cause 2). Refer to MDARS ECU Reprogramming Procedure.
2019-2022 Mazda3 (Japan built) with VINS lower than JM1BP******516941 (produced before March 1,
2022)
2019-2022 Mazda3 (Mexico built) with VINS lower than 3MZBP******302558 (produced before February 27,
2022)
2020-2022 CX-30 with VINS lower than 3MVDM******414338 (produced before February 27, 2022)
○
○
○
NOTE:
• If the current calibration file name in the ECU FILENAME screen is the same as shown in the Calibration Files
Information or with a later suffix, reprogramming is not necessary.
• After reprogramming, pending DTC P2610:00 [PCM] will be stored without the Check Engine Light ON. Start the
engine and clear the DTC.
• If DTC U2120:00 or/and U2500:82 are stored and i-ACTIVSENSE warning light (amber) turns on after the
reprogramming, refer to SA-036/19.
3. Clear the DTC, turn the ignition off, and get out of the vehicle.
4. Close and lock the door.
5. Wait for at least ten minutes.
6. Verify the repair by starting the engine and making sure the Check Engine light is OFF and no abnormal warning lights
are ON.
NOTE: If any DTC should remain after performing a DTC erase, diagnose the DTC according to the instructions on
MGSS.
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01/03/2023 11:58 AM cciz
CALIBRATION
For ESU
File Name
BDGF-66S11-M
For PCM
2019-2021 US / Canada spec.
Mazda3 (Japan built) with VINS starting with JM1
Engine
Drive
AT
2WD
MT
2WD
2.0L
2WD
2.5L w/
cylinder
deactivaton
AT
4WD
MT
2WD
2WD
AT
2.5L w/out
cylinder deactivation
4WD
MT
2WD
File Name
Note
PAH9-188K2-L
Mitsubishi
PAJ1-188K2-M
Denso
PAJ2-188K2-K
Mitsubishi
PAJ3-188K2-L
Denso
PX05-188K2-N
Mitsubishi
PX06-188K2-N
Denso
PX07-188K2-R
PX08-188K2-R
Denso
PX58-188K2-M
Mitsubishi
PX59-188K2-M
Denso
PXJ7-188K2-F
Mitsubishi
PXJ8-188K2-G
Denso
PX4V-188K2-C
Mitsubishi
PX4W-188K2-C
Denso
PX4X-188K2-C
Mitsubishi
PX5A-188K2-C
Denso
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01/03/2023 11:58 AM cciz
Mazda3 (Mexico built) with VINS starting with 3MZ
Engine
Drive
AT
2WD
MT
2WD
2.0L
2.5L w/
cylinder
deactivaton
2WD
AT
4WD
2WD
2.5L w/out
cylinder deactivation
AT
4WD
File Name
Note
PAJ8-188K2-G
Mitsubishi
PAJ9-188K2-H
Denso
PAK1-188K2-F
Mitsubishi
PAK2-188K2-G
Denso
PX13-188K2-H
Mitsubishi
PX14-188K2-H
Denso
PX15-188K2-H
PX16-188K2-H
Denso
PXK5-188K2-E
Mitsubishi
PXK6-188K2-F
Denso
PX6R-188K2-C
Mitsubishi
PX6S-188K2-C
Denso
File Name
Note
PA6W-188K2-F
Mitsubishi
PA6X-188K2-F
Denso
PA7G-188K2-F
Mitsubishi
PA7H-188K2-F
Denso
PA6T-188K2-F
Mitsubishi
PA6V-188K2-F
Denso
PXH7-188K2-F
Mitsubishi
PXH8-188K2-F
Denso
PXJ9-188K2-F
PXK1-188K2-F
Denso
PXM1-188K2-F
Mitsubishi
PXL4-188K2-F
Denso
PXM2-188K2-F
Mitsubishi
PXL5-188K2-F
Denso
CX-30
Engine
Transmission
Drive
2WD
AT
2.0L
4WD
MT
2.5L w/
cylinder
deactivaton
2WD
2WD
AT
4WD
2WD
2.5L w/out
cylinder deactivation
AT
4WD
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01/03/2023 11:58 AM cciz
Mexico spec.
Mazda3 (Japan built) with VINS starting with JM1
Engine
Transmission
Drive
AT
2WD
MT
2WD
AT
2WD
MT
2WD
2.0L
2.5L
File Name
Note
PAJ4-188K2-K
Mitsubishi
PAJ5-188K2-L
Denso
PAJ6-188K2-K
PAJ7-188K2-L
Denso
PX09-188K2-K
Mitsubishi
PX10-188K2-L
Denso
PX11-188K2-K
Mitsubishi
PX12-188K2-L
Denso
File Name
Note
PAK3-188K2-G
Mitsubishi
PAK4-188K2-H
Denso
PAK5-188K2-G
PAK6-188K2-H
Denso
PX17-188K2-G
Mitsubishi
PX18-188K2-H
Denso
PX19-188K2-G
Mitsubishi
PX20-188K2-H
Denso
Mazda3 (Mexico built) with VINS starting with 3MZ
Engine
Drive
AT
2WD
MT
2WD
AT
2WD
MT
2WD
2.0L
2.5L
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01/03/2023 11:58 AM cciz
CX-30
Engine
Transmission
Drive
2.0L
AT
2WD
AT
2WD
AT
4WD
2.5L
File Name
Note
PA7A-188K2-D
Mitsubishi
PA7B-188K2-D
Denso
PXH9-188K2-D
Mitsubishi
PXJ1-188K2-D
Denso
PXK2-188K2-B
Mitsubishi
PXK3-188K2-B
Denso
WARRANTY INFORMATION
NOTE:
• This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.
• Additional diagnostic time cannot be claimed for this repair.
Warranty Type
A
Symptom Code
60
Damage Code
9W
Part Number Main Cause
Quantity
Operation Number / Labor Hours:
5555-18-881 (Cause 1)
5555-61-590 (Cause 2)
0
XXS8NXFX / 0.3 Hrs. (Cause 1)
XXW4CXFX / 0.3 Hrs. (Cause 2)
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01/03/2023 11:58 AM cciz
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TSB/Document ID: 07-004-22b
Replacement Service Bulletin Number:
MFR Communication Date: 2022-12-21
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
MFR Component System:
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