In July 2018, Mazda filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Engine Control Unit, covering the Demio, Roadster and 1 more model. The filing affects 15,105 vehicles manufactured between August 2014 and April 24, 2017.
Overview
| MLIT filing number | 1142890 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | July 5, 2018 |
| Manufacturer(s) | Mazda |
| Component | Engine Control Unit |
| Production period | August 2014 — April 24, 2017 |
| Vehicles affected | 15,105 units |
Filing in context
The Engine Control Unit is the most frequently cited component category in this archive, appearing in 3 of its 4,890 filings. This filing is one of 39 Mazda notifications from 2018 in this archive. For scale, 1,387 of the 4,890 filings in this archive report a larger number of affected vehicles; the vehicles involved here were manufactured over a span of about 2 years and 8 months.
Defect
On vehicles equipped with the i-ELOOP regenerative braking energy recovery system, the DC-DC converter control program is incorrect. When an electrical circuit fault occurs, the i-ELOOP warning lamp illuminates and the i-stop warning lamp flashes, and a bypass mode activates to cut current flow. However, pressing the push-button start to turn the ignition off may cancel this bypass mode. Continued operation under this condition may cause a short circuit within the DC-DC converter, leading to a charging failure, battery discharge, and engine stall. In the worst case, a vehicle fire may occur.
Corrective action
On all vehicles, the engine control unit is inspected. If an abnormality is found in the DC-DC converter, the DC-DC converter is replaced with a new part and the engine control unit is reprogrammed with the corrected/updated software. If no abnormality is found, the DC-DC converter and engine control unit are both reprogrammed with the corrected/updated software.
Affected models & chassis ranges
This filing lists 6 type code(s). A vehicle is affected if its chassis number falls within one of the ranges below.
| Type code (型式) | Model | Chassis ranges |
|---|---|---|
| DBA-ND5RC | ROADSTER | ND5RC-100066 — ND5RC-115343 |
| DBA-NDERC | ROADSTER | NDERC-100018 — NDERC-103275 |
| LDA-DJ5AS | DEMIO | DJ5AS-100012 — DJ5AS-301677 |
| LDA-DJ5FS | DEMIO | DJ5FS-100032 — DJ5FS-307302 |
| LDA-DK5AW | ＣＸ－３ | DK5AW-100216 — DK5AW-202486 |
| LDA-DK5FW | ＣＸ－３ | DK5FW-100558 — DK5FW-206033 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
減速エネルギー回生システム（ｉ－ＥＬＯＯＰ）を搭載した車両において、ＤＣ－ＤＣコンバータの制御プログラムが不適切なため、電気回路が故障した場合にｉ－ＥＬＯＯＰ警告灯点灯およびｉ－ｓｔｏｐ警告灯が点滅するとともに、通電停止のためのバイパスモードが作動するが、プッシュボタンスタートを押して電源ポジションをＯＦＦにした際、解除することがある。そのため、そのまま使用を続けると、ＤＣ－ＤＣコンバータ内部の電気回路がショートし、充電不良となりバッテリが上がり、エンジンが停止するおそれがある。または、最悪の場合、火災に至るおそれがある。
改善措置
全車両、エンジン制御コンピュータを点検し、点検の結果、ＤＣ－ＤＣコンバータに異常がある場合はＤＣ－ＤＣコンバータを新品と交換し、エンジン制御コンピュータを対策プログラムに書き換える。異常がない場合は、ＤＣ－ＤＣコンバータおよびエンジン制御コンピュータを対策プログラムに書き換える。
Source & verification
This entry reproduces public data from Japan's MLIT recall registry. English text is jdmvin.com's own translation; always verify against the official source:
https://renrakuda.mlit.go.jp/renrakuda/ris-detail-car.html?class=recalldatacar&id=3004292
Related recalls
Same manufacturer, same component
Other Mazda filings involving the Engine Control Unit, closest to this one by filing date.
Engine Control Unit — affects 10 vehicles.
Open recall detail →Engine Control Unit — affects 22 vehicles.
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