Overview
| MLIT filing number | 1130810 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | January 24, 2013 |
| Manufacturer(s) | Isuzu |
| Component | Engine Control Unit (Computer) |
| Production period | November 26, 2007 — June 2012 |
| Vehicles affected | 70 units |
Defect
On compressed natural gas (CNG)-powered route buses equipped with automatic transmissions, the engine control unit's idle speed control software is incorrectly programmed. When idle load fluctuates, engine idle speed may remain elevated. As a result, the automatic transmission may fail to shift out of neutral, and in the worst case, the vehicle may be unable to move.
Corrective action
On all vehicles, reprogram the engine control unit software.
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 |
|---|---|---|
| LDG-LV234L3改 | ERGA | LV234L3-7000186 — LV234L3-7000195 |
| LDG-LV234N3改 | ERGA | LV234N3-7000046 — LV234N3-7000413 |
| PDG-LV234L2改 | ERGA | LV234L2-7000007 — LV234L2-7000881 |
| PDG-LV234N2改 | ERGA | LV234N2-7000052 — LV234N2-7000666 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
圧縮天然ガス（ＣＮＧ）エンジン搭載の自動変速機仕様の路線バスにおいて、エンジン制御ユニットのアイドリング回転制御プログラムが不適切なため、アイドリング時の負荷が変動すると、アイドリング回転が高くなったままとなることがある。そのため、自動変速機がニュートラルから変速しなくなり、最悪の場合、発進できなくなるおそれがある。
改善措置
全車両、エンジン制御ユニットの制御プログラムを書き換える。
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=3002946