Overview
| MLIT filing number | 1142821 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | June 14, 2018 |
| Manufacturer(s) | Hino |
| Component | Computer (Engine) |
| Production period | November 13, 2015 — July 17, 2017 |
| Vehicles affected | 104 units |
Defect
On large hybrid route buses, an error in the hybrid control program governing engine startup causes fuel delivery to lag behind the supply pump's rotational speed, resulting in insufficient lubrication between the pump's rollers and shoes. Continued use in this condition causes the rollers and shoes to seize, damaging the supply pump and rendering the vehicle inoperable.
Corrective action
On all vehicles, replace the hybrid ECU and supply pump with corrected 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 |
|---|---|---|
| QSG-HL2ANAP | BLUE RIBBON Hybrid | HL2ANA-40011 — HL2ANA-40073 |
| QSG-HL2ASAP | BLUE RIBBON Hybrid | HL2ASA-40011 — HL2ASA-40051 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
大型ハイブリッド路線バスにおいて、 ①エンジン始動時のハイブリッド制御プログラムが不適切なため、サプライポンプの回転速度に燃料供給が追い付かず、サプライポンプのローラとシュー間で潤滑不良を起こすことがある。そのため、そのまま使用を続けると、ローラとシューが焼付いてサプライポンプが破損し、走行できなくなるおそれがある。
改善措置
①全車両、ハイブリッドＥＣＵ及びサプライポンプを対策品に交換する。
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=3004283