Overview
| MLIT filing number | 1139492 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | December 1, 2016 |
| Manufacturer(s) | Isuzu |
| Component | Clutch |
| Production period | September 18, 2012 — September 29, 2016 |
| Vehicles affected | 128 units |
Defect
On hybrid transit buses, the electric clutch actuator that controls clutch engagement was improperly manufactured, resulting in units installed with a deformed internal control circuit board. Repeated thermal expansion and contraction of the CPU terminal solder joints causes cracks to develop at those joints. This causes the warning lamp to illuminate and the system to enter a fail-safe mode, preventing the clutch from engaging or disengaging. In the worst case, the engine may stall while driving, rendering the vehicle inoperable.
Corrective action
On all vehicles, replace the electric clutch actuator with a corrected part.
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 |
|---|---|---|
| QQG-LV234L3 | ERGA | LV234L3-7000201 — LV234L3-7001299 |
| QQG-LV234N3 | ERGA | LV234N3-7000461 — LV234N3-7001192 |
| QSG-LV234L3 | ERGA | LV234L3-7000201 — LV234L3-7001299 |
| QSG-LV234N3 | ERGA | LV234N3-7000461 — LV234N3-7001192 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
ハイブリッド仕様の路線バスにおいて、 ②クラッチの作動を制御するエレクトリッククラッチアクチュエータの製造が不適切なため、内部制御基板が変形して取付けられているものがある。そのため、ＣＰＵ端子はんだ部の熱膨張・収縮の繰り返しにより、当該はんだ部に亀裂が生じ、警告灯が点灯してフェールセーフモードとなり、クラッチの接断ができなくなり、最悪の場合、走行中エンストして走行不能となるおそれがある。
改善措置
全車両、 ②エレクトリッククラッチアクチュエータ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=3003919