MLIT Statutory Recall · Japan

Recall 1142890 — Engine Control Unit

Filed July 5, 2018 · Mazda

Overview

MLIT filing number1142890
TypeStatutory Recall (government-mandated recall)
Date filedJuly 5, 2018
Manufacturer(s)Mazda
ComponentEngine Control Unit
Production periodAugust 2014 — April 24, 2017
Vehicles affected15,105 units

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)ModelChassis 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

Check your own vehicle: to see whether this filing affects a specific chassis number — and find every other recall for it — use the chassis lookup on the home page.

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