Overview
| MLIT filing number | 1147462 |
|---|---|
| Type | Statutory Recall (government-mandated recall) |
| Date filed | May 19, 2020 |
| Manufacturer(s) | Hino, Isuzu, UD Trucks |
| Component | Other (Engine) |
| Production period | April 28, 2017 — December 25, 2019 |
| Vehicles affected | 18,386 units |
Defect
In the intake air preheat system that aids cold-start performance, insufficient degassing during the waterproofing and rust-prevention treatment of the pre-heater relay leaves small air bubbles on the circuit board in rare cases. As temperature rises, trace gases form within the bubbles, causing a chemical reaction that short circuits the relay circuit and keeps it continuously energized, triggering a warning indication. In the worst case, the pre-heater relay may overheat, sustaining burn damage and causing a vehicle fire.
Corrective action
On all vehicles, add a fused (2A) wire to the relay's ground circuit. If a warning indication appears after the wiring addition, replace the pre-heater relay with a new unit.
Affected models & chassis ranges
This filing lists 29 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 |
|---|---|---|
| 2DG-CF5AL | QUON | JNCMBN0B7JU032894 — JNCMBN0B4LU049154 |
| 2DG-CZ5BL | QUON | JNCMBP0E4JU032938 — JNCMBP0E9LU049382 |
| 2DG-HF5AL | － | JNCMBN0B8KU038074 — JNCMBN0B1LU048432 |
| 2DG-HZ5BL | － | JNCMBP0E2JU037314 — JNCMBP0E0LU048279 |
| 2DG-SF5AL | － | JNCMBN0B5KU038114 — JNCMBN0B4KU046155 |
| 2DG-SZ5BL | － | JNCMBP0E7JU037356 — JNCMBP0E7KU046284 |
| 2PG-CD5AL | QUON | JNCMBN0C7HU026287 — JNCMBN0C4LU048028 |
| 2PG-CD5BA | QUON | JNCMBN0C8HU021910 — JNCMB02C7LU049271 |
| 2PG-CD5BL | QUON | JNCMB02C3HU025945 — JNCMB02C2LU049341 |
| 2PG-CD5CA | QUON | JNCMB02C1HU016208 — JNCMB02C5LU049351 |
| 2PG-CD5CE | QUON | JNCMB02C6JU031003 — JNCMB02C0LU049287 |
| 2PG-CD5CL | QUON | JNCMB02C6HU018195 — JNCMB02C4LU049339 |
| 2PG-CG5BA | QUON | JNCMB02G9HU025953 — JNCMB02GXLU046805 |
| 2PG-CG5BE | QUON | JNCMB02G5JU034378 — JNCMB02G0KU046231 |
| 2PG-CG5BL | QUON | JNCMB02G0JU033297 — JNCMB02G2KU046280 |
| 2PG-CG5CA | QUON | JNCMB02GXHU017229 — JNCMB02G3LU049352 |
| 2PG-CG5CE | QUON | JNCMB02G1JU031283 — JNCMB02G6LU049328 |
| 2PG-CG5CL | QUON | JNCMB02G5HU022337 — JNCMB02G0LU049292 |
| 2PG-CW5AL | QUON | JNCMB02D5HU017046 — JNCMBN0D2LU049350 |
| 2PG-CW5BL | QUON | JNCMB02D1HU022941 — JNCMB02D7LU049330 |
| 2PG-CW5CA | QUON | JNCMB02D7HU022507 — JNCMBP0D6LU049279 |
| 2PG-CW5CL | QUON | JNCMBP0D0HU022005 — JNCMB02D3LU049325 |
| 2PG-CX5BA | QUON | JNCMB02D6HU024538 — JNCMB02D0LU049170 |
| 2PG-CX5BL | QUON | JNCMB02D3HU026151 — JNCMB02D6LU048928 |
| 2PG-GK5AAB | QUON | JNCMBP0A3HU022537 — JNCMBP0A6LU049353 |
| 2PG-GK5AAB改 | QUON | JNCMBP0A2KU037831 — JNCMBP0A5LU048176 |
| 2PG-GK5AAD | QUON | JNCMB22A4JU027834 — JNCMB22A9LU049346 |
| 2PG-GK5AAE | QUON | JNCMB22A7JU029657 — JNCMB22A9LU049248 |
| 2PG-GK5AAK | QUON | JNCMB02A1JU034874 — JNCMB02A5LU048053 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
②原動機の冷間時に始動性を補助する吸入空気予熱装置において、プレヒータリレーの防水・防錆加工時の脱泡が不十分なため、希に気泡が回路基板上に残存し、温度上昇によって気泡内で微少なガスが発生することがある。そのため、ガスによる化学変化により当該リレー回路が短絡し、常時通電状態となり、警告が表示され、最悪の場合、プレヒータリレーが過熱して焼損・火災に至るおそれがある。
改善措置
②全車両、当該リレーのアース配線にヒューズ（２Ａ）付き配線を追加する。なお、配線の追加後に警告表示が出た場合は、プレヒータリレーを新品に交換する。
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=3004751
Related
All Hino recalls · All Isuzu recalls · All UD Trucks recalls · All 2020 recalls · Recall Archive home