Overview
| MLIT filing number | 2104070 |
|---|---|
| Type | Improvement Campaign (manufacturer improvement measure / 改善対策) |
| Date filed | June 3, 2011 |
| Manufacturer(s) | Isuzu |
| Component | Computer (emissions/noise) |
| Production period | June 17, 2010 — May 28, 2011 |
| Vehicles affected | 886 units |
Issue
On medium-duty trucks meeting 2010 (Heisei 22) emission regulations, the engine control program may cause nitrogen oxide (NOx) emissions to exceed specified values under certain driving conditions.
Corrective action
On all vehicles, the engine control unit program governing emission control devices will be reprogrammed as an interim measure, to be carried out as soon as the updated software is ready. Note: the interim reprogramming may cause the particulate matter removal device (DPD) regeneration warning to illuminate frequently. A permanent countermeasure addressing the engine assembly and related systems is under development and will be implemented once finalized.
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 |
|---|---|---|
| LKG-FTR90S2 | FORWARD | FTR90-7000011 — FTR90-7000614 |
| LKG-FTR90T2 | FORWARD | FTR90-7000011 — FTR90-7000614 |
| SKG-FRR90S2 | FORWARD | FRR90-7020034 — FRR90-7025825 |
| SKG-FSR90S2 | FORWARD | FSR90-7001170 — FSR90-7001397 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
平成２２年排出ガス規制対応の中型トラックにおいて、エンジン制御プログラムの影響により、運転操作によっては、窒素酸化物（ＮＯｘ）の排出値が悪化するおそれがある。
改善措置
全車両、暫定対策として一酸化炭素等発散防止装置に係るエンジン制御ユニットの制御プログラムを書き換える。なお、制御プログラムの書き換えについては、準備ができ次第、速やかに実施する。 また、暫定対策により、粒子状物質除去装置（ＤＰＤ）の再生を促す警告が頻繁に点灯する等のおそれがあるため、エンジン本体を含めた恒久対策を検討し、対策が決定次第、改めて措置を実施する。
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=3008766