In December 2003, Mitsubishi filed an improvement campaign with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the ABS, covering the Aero Star, Aero Bus. The filing affects 2,243 vehicles manufactured between October 17, 1988 and April 20, 1993.
Overview
| MLIT filing number | 2102410 |
|---|---|
| Type | Improvement Campaign (manufacturer improvement measure / 改善対策) |
| Date filed | December 15, 2003 |
| Manufacturer(s) | Mitsubishi |
| Component | ABS |
| Production period | October 17, 1988 — April 20, 1993 |
| Vehicles affected | 2,243 units |
Filing in context
The ABS is the most frequently cited component category in this archive, appearing in 30 of its 4,890 filings. This filing is one of 36 Mitsubishi notifications from 2003 in this archive. For scale, 2,349 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 4 years and 6 months.
Issue
When exposed to unexpectedly strong unauthorized high-output radio frequency signals, the ABS control unit (ECU) may misinterpret noise superimposed on the wheel speed sensor signals as a wheel lock condition. This causes the ABS control valve to malfunction, producing abnormal noise and, in the worst case, reducing brake effectiveness.
Corrective action
Replace the ECU with a corrected part and simultaneously replace the wheel speed sensors, ABS control valves, electrical harness, and brake lines. On certain vehicles with ECU-compatible configurations, replace only the ECU with a corrected part. (For vehicles where supply of corrected parts is delayed, notify owners of the defect as an interim measure and perform the remedy at a later date.)
Affected models & chassis ranges
This filing lists 15 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 |
|---|---|---|
| P-MS725N | Aero Bus | MS725N-88030 — MS725N-88031 |
| P-MS725S | Aero Bus | MS725S-82052 — MS725S-88958 |
| U-MP218K | Aero Star | MP218K-12054 — MP218K-22094 |
| U-MP218M | Aero Star | MP218M-12001 — MP218M-22216 |
| U-MP218N | Aero Star | MP218N-12018 |
| U-MP218P | Aero Star | MP218P-12005 — MP218P-22011 |
| U-MP618K | Aero Star | MP618K-12034 — MP618K-32022 |
| U-MP618M | Aero Star | MP618M-12015 — MP618M-32021 |
| U-MP618N | Aero Star | MP618N-10005 — MP618N-22006 |
| U-MP618P | Aero Star | MP618P-10008 — MP618P-22061 |
| U-MS716N | Aero Bus | MS716N-10026 — MS716N-22015 |
| U-MS716S | Aero Bus | MS716S-10037 — MS716S-42021 |
| U-MS726N | Aero Bus | MS726N-10007 — MS726N-32001 |
| U-MS726S | Aero Bus | MS726S-10003 — MS726S-42021 |
| U-MS729S | Aero Bus | MS729S-10002 — MS729S-92115 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
想定外の不正な高出力電波を受けた際、ＡＢＳを制御するコントロールユニット（ＥＣＵ ）が、車輪速センサー信号に混入したノイズにより車輪をロック状態と誤認識することが ある。このため、ＡＢＳコントロールバルブが誤作動して異音が発生したり、最悪の場合 、ブレーキの効きが悪くなるおそれがある。
改善措置
当該ＥＣＵを対策品と交換すると同時に、車輪速センサー、ＡＢＳコントロールバルブ、 電気ハーネス、配管を変更する。 また、ＥＣＵ装着互換性のある一部車両については、 ＥＣＵのみを対策品に交換する。 （対策品の供給に時間を要する車両については、当面の暫定処置として、使用者に不具合 内容を通知し、後日、改善対策を実施する。）
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=3008627
Related recalls
Same manufacturer, same component
Other Mitsubishi filings involving the ABS, closest to this one by filing date.
ABS — affects 3,283 vehicles.
Open recall detail →ABS — affects 22,417 vehicles.
Open recall detail →ABS — affects 76 vehicles.
Open recall detail →ABS — affects 338 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.
Shift Lever / Pedal — affects 107 vehicles.
Open recall detail →Body — affects 70 vehicles.
Open recall detail →Body — affects 879 vehicles.
Open recall detail →Seat — affects 117 vehicles.
Open recall detail →Seating — affects 41,414 vehicles.
Open recall detail →All Mitsubishi recalls · All 2003 recalls · Recall Archive home