Fuel Gauge Fluctuates To Higher Level (09-034/22)
Publication date: 2022-08-23Reference number: 09-034/22
FUEL GAUGE FLUCTUATES TO HIGHER LEVEL
TECHNICAL SERVICE BULLETIN
Reference Number(s): 09-034/22, Date of Issue:
August 23, 2022
| MAZDA: | 2019-2021 Mazda3; 2020-2021 CX-30 |
BULLETIN NOTES
APPLICABLE MODEL(S)/VINS
2019-2021 Mazda3 (Japan built) with VINS lower than JM1BP******330387 (produced before January 7, 2021)
2019-2021 Mazda3 (Mexico built) with VINS lower than 3MZBP******210192 (produced before January 7, 2021)
2020-2021 CX-30 with VINS lower than 3MVDM******240455 (produced before January 7, 2021)
DESCRIPTION
Some customers may complain about a fuel gauge that fluctuates to a higher level at a stop on inclines, even after a long drive since it was fully refilled. This is caused by improper control software of the body control module (BCM). To eliminate this concern, the control software of the BCM has been modified.
Customers having this concern should have their vehicle repaired using the following repair procedure.
REPAIR PROCEDURE
- Verify customer concern.
- Reprogram the BCM with the Mazda Modular Diagnostic System (M-MDS), using the Mazda Diagnostic And Repair Software (MDARS). Refer to MDARS ECU Reprogramming Procedure.
- 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.
- If the BCM needs to be reprogrammed, related ECU may need to be reprogrammed together. Refer to TSB 09-027/22 - WHEN REPLACING BCM, SOME ECU MAY NEED REPROGRAMMING, reprogram applicable ECU and explain to the customer about the low battery warning function.
- If DTC U2120:00 or/and U2500:82 are stored and i-ACTIVSENSE warning light (amber) turns on after the reprogramming, refer to SA-043/20.
- If the Welcome Lamp function is accidently activated while using MDARS, it may also cause this concern. Check and correct as necessary. Refer to the SA-054/20 for details.
- Clear the DTC, turn the ignition off, and get out of the vehicle.
- Close and lock the door.
- Wait for at least ten minutes.
- 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.
CALIBRATION
CALIBRATION INFORMATION
| ECU/Model | 2019-2020 Mazda3 4DR SD (Japan built) | 2021 Mazda3 4DR SD (Japan built) | 2019-2020 Mazda3 4DR SD (Mexico built) | 2021 Mazda3 4DR SD (Mexico built) |
|---|---|---|---|---|
| BCM_MAIN | BCKB-66S02- | BFVV-66S02-E | BDTS-66S02-U | BGBL-66S02-E |
| BCM_SUB | BCKP-66S03-A | DGAS-66S03- | BCKP-66S03-A | DGAS-66S03- |
| LFU | BCKA-66S06-F | - | BCKA-66S06-F | - |
| IC | BDGF-66S14-N | BDGF-66S14-N | BDGF-66S14-N or BDTS-66S14- | BDGF-66S14-N or BDTS-66S14- |
| DOOR_ESU_D | BCKA-66S09-F | BCKA-66S09-F | BCKA-66S09-F | BCKA-66S09-F |
| DOOR_ESU_P | BCKA-66S08-F | BCKA-66S08-F | BCKA-66S08-F | BCKA-66S08-F |
| ESU | BCKB-66S07-A or DJB5-66S07- | BFVV-66S07-A | BCKB-66S07-A or DJB5-66S07- | BFVV-66S07-A |
CALIBRATION INFORMATION
| ECU/Model | 2019-2020 Mazda3 5DR HB (Japan built) | 2021 Mazda3 5DR HB (Japan built) | 2020 CX-30 | 2021 CX-30 |
|---|---|---|---|---|
| BCM_MAIN | BEMD-66S02-U | BFWP-66S02-E | DGH9-66S02-K | DEJW-66S02-E |
| BCM_SUB | BCKP-66S03-A | DGAS-66S03- | BCKP-66S03-A | DGAS-66S03- |
| LFU | BCWK-66S06-E | - | DFR5-66S06-C | - |
| IC | BDGF-66S14-N | BDGF-66S14-N | DFR5-66S14-F | DFR5-66S14-F |
| DOOR_ESU_D | BCKA-66S09-F | BCKA-66S09-F | BCKA-66S09-F | BCKA-66S09-F |
| DOOR_ESU_P | BCKA-66S08-F | BCKA-66S08-F | BCKA-66S08-F | BCKA-66S08-F |
| ESU | BCKB-66S07-A or DJB5-66S07- | BFVV-66S07-A | BCKB-66S07-A or DJB5-66S07- | BFVV-66S07-A |
WARRANTY INFORMATION
NOTE:
- This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.
- This repair will be covered under Mazda's New Vehicle Limited Warranty term and CA emission (long term).
- Additional diagnostic time cannot be claimed for this repair.
WARRANTY INFORMATION
| Warranty Type | A |
| Symptom Code | 65 |
| Damage Code | 9W |
| Part Number Main Cause | 5555-67-560 |
| Quantity | 0 |
| Operation Number/Labor Hours: | XXW42AFX/0.3 Hrs.(Reprogramming BCM only) XXW42BFX/0.6 Hrs. (Reprograming BCM and related ECU) |