In September 2011, Isuzu filed an improvement campaign with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Computer (Emissions/Noise), covering the Forward. The filing affects 886 vehicles manufactured between June 17, 2010 and May 28, 2011.
Overview
| MLIT filing number | 2104100 |
|---|---|
| Type | Improvement Campaign (manufacturer improvement measure / 改善対策) |
| Date filed | September 9, 2011 |
| Manufacturer(s) | Isuzu |
| Component | Computer (Emissions/Noise) |
| Production period | June 17, 2010 — May 28, 2011 |
| Vehicles affected | 886 units |
Filing in context
The Computer (Emissions/Noise) is the most frequently cited component category in this archive, appearing in 9 of its 4,890 filings. This filing is one of 42 Isuzu notifications from 2011 in this archive. For scale, 2,862 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 11 months.
Issue
On medium-duty trucks compliant with 2010 exhaust emission regulations, a defect in the engine control program may cause nitrogen oxide (NOx) emissions to exceed allowable levels depending on driving conditions.
Corrective action
On all vehicles, replace the engine assembly and intercooler (intake air cooling unit) with corrected parts, and reprogram the engine control unit. On certain vehicles, also replace the transmission control unit or the final reduction gear.
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、エンジン本体及びインタークーラ（吸入空気冷却装置）を対策品に交換するとともに、エンジン制御ユニットの制御プログラムを書き換える。また、一部車両においては、トランスミッション制御ユニット又は終減速ギヤを変更する。
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=3008768
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Filings whose affected type codes overlap with this one, newest first.
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Open recall detail →