Overview
| MLIT filing number | 1128540 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | November 24, 2011 |
| Manufacturer(s) | Hino |
| Component | Emissions Control Device |
| Production period | July 13, 2010 — March 2011 |
| Vehicles affected | 78 units |
Defect
On large route buses, the engine control program is incorrect. When load increases at idle, incomplete combustion occurs and carbon deposits accumulate, blocking the exhaust gas recirculation (EGR) cooler. Continued operation can cause the turbocharger turbine blades to chip, triggering the engine check lamp, reducing power output, and preventing smooth vehicle operation.
Corrective action
On all vehicles, reprogram the engine control program and replace the EGR cooler, EGR valve, turbocharger, and EGR pipe with new parts.
Affected models & chassis ranges
This filing lists 2 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 |
|---|---|---|
| LJG-HU8JLGP | Blue Ribbon City | HU8JLG-40011 — HU8JLG-40061 |
| LJG-HU8JMGP | Blue Ribbon City | HU8JMG-40011 — HU8JMG-40037 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
大型路線バスにおいて、原動機の制御プログラムが不適切なため、アイドル回転で負荷が増大した場合に燃焼不良となり、カーボンデポジットの堆積で排気ガス再循環（ＥＧＲ）クーラーが閉塞するものがある。そのため、そのまま使用を続けると、ターボのタービン翼が欠損し、エンジンチェックランプが点灯するとともに出力不足となり、円滑な走行ができなくなるおそれがある。
改善措置
全車両、原動機の制御プログラムを書き換えるとともに、ＥＧＲクーラ、ＥＧＲバルブ、ターボならびにＥＧＲパイプを新品に交換する。
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=3002696