In December 2014, Mazda filed an improvement campaign with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Lubrication System, covering the Atenza, CX-5. The filing affects 61,647 vehicles manufactured between February 13, 2012 and September 27, 2013.
Overview
| MLIT filing number | 2104530 |
|---|---|
| Type | Improvement Campaign (manufacturer improvement measure / 改善対策) |
| Date filed | December 4, 2014 |
| Manufacturer(s) | Mazda |
| Component | Lubrication System |
| Production period | February 13, 2012 — September 27, 2013 |
| Vehicles affected | 61,647 units |
Filing in context
The Lubrication System is the most frequently cited component category in this archive, appearing in 11 of its 4,890 filings. This filing is one of 13 Mazda notifications from 2014 in this archive. For scale, 680 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 1 year and 7 months.
Issue
In the oil filter for the diesel engine, the relief valve opening pressure is set incorrectly, which allows metal particles generated inside the engine to pass through the filter without being captured. When metal particles enter the vacuum pump and cause shaft wear, the pump's negative pressure generation capacity decreases. If the brake pedal is depressed multiple times in rapid succession at low engine speeds, brake assist force may temporarily diminish. When metal particles enter the turbocharger and cause shaft wear, loss of acceleration and abnormal noise may occur.
Corrective action
(1) On all vehicles, flush the engine oil, replace the oil filter with a corrected part, and affix a caution label to the engine hood stating that non-genuine oil filters must not be used. (2) To suppress the generation of metal particles inside the engine, reprogram the engine control computer on any vehicle that does not already contain the combustion improvement program. (3) Inspect the vacuum pump on all vehicles; replace the vacuum pump with a new unit on any vehicle showing reduced negative pressure generation capacity. Vehicles with only minor reduction in capacity will be scheduled for replacement once parts become available. (4) Inspect the turbocharger on all vehicles; replace the turbocharger with a new unit on any vehicle exhibiting poor acceleration, abnormal noise from the turbocharger, or other anomalies.
Affected models & chassis ranges
This filing lists 4 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 |
|---|---|---|
| LDA-GJ2FP | Atenza | GJ2FP-100015 — GJ2FP-107523 |
| LDA-GJ2FW | Atenza | GJ2FW-100012 — GJ2FW-108030 |
| LDA-KE2AW | ＣＸ－５ | KE2AW-100017 — KE2AW-121532 |
| LDA-KE2FW | ＣＸ－５ | KE2FW-100013 — KE2FW-126340 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
ディーゼルエンジン用のオイルフィルターにおいて、リリーフバルブの開弁圧が不適切なため、エンジン内部で発生する金属粉がオイルフィルターで捕捉されないことがある。そのため、バキュームポンプに金属粉が侵入し軸が摩耗した場合、負圧生成能力が低下し、エンジン低回転時にブレーキペダルを短時間に複数回踏むと、一時的にブレーキアシスト力が低下するおそれがある。また、ターボチャージャーに金属粉が侵入し軸が摩耗した場合、加速力の低下及び異音が発生するおそれがある。
改善措置
（１） 全車両、エンジンオイルをフラッシングし、オイルフィルターを対策品に交換するとともにエンジンフードに純正外のオイルフィルターを使用しない旨の注意ラベルを貼る。 （２） エンジン内部での金属粉の発生を抑制するため、燃焼改善プログラムが入っていない車両は、エンジン制御コンピュータのプログラムを書き換える。 （３） 全車両、バキュームポンプを点検し、負圧生成能力の低下が認められるものは、バキュームポンプを新品に交換する。但し、部品の準備に時間を要すため、負圧生成能力の低下が軽微なものは、部品の準備が整い次第、後日、交換する。 （４） 全車両、ターボチャージャーを点検し、加速不良及びターボチャージャーからの異音等の異常が認められるものは、ターボチャージャーを新品に交換する。
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=3008798
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