In May 2020, Hino, Isuzu & UD Trucks filed a statutory recall with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Other (Engine), covering the Quon. The filing affects 18,386 vehicles manufactured between April 28, 2017 and December 25, 2019.
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 |
Filing in context
This notification is a joint filing by 3 manufacturers: Hino, Isuzu & UD Trucks.
The Other (Engine) is the most frequently cited component category in this archive, appearing in 46 of its 4,890 filings. This filing is one of 35 Hino notifications from 2020 in this archive. For scale, 1,287 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 2 years and 7 months.
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 recalls
Same manufacturer, same component
Other Hino filings involving the Other (Engine), closest to this one by filing date.
Other (Engine) — affects 34,588 vehicles.
Open recall detail →Other (Engine) — affects 537 vehicles.
Open recall detail →Other (Engine) — affects 16,110 vehicles.
Open recall detail →Other (Engine) — affects 37 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Other (Control System) — affects 92 vehicles.
Open recall detail →Brake system (air brake) — affects 2,933 vehicles.
Open recall detail →Other (Control Device) — affects 26,885 vehicles.
Open recall detail →Other Equipment — affects 34,123 vehicles.
Open recall detail →Propeller Shaft — affects 17,587 vehicles.
Open recall detail →All Hino recalls · All Isuzu recalls · All UD Trucks recalls · All 2020 recalls · Recall Archive home