In November 2002, Toyota filed an improvement campaign with Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) concerning the Other (Control System), covering the Crown Sedan. The filing affects 32 vehicles manufactured between October 10, 2002 and November 2002.
Overview
| MLIT filing number | 2102200 |
|---|---|
| Type | Improvement Campaign (manufacturer improvement measure / 改善対策) |
| Date filed | November 19, 2002 |
| Manufacturer(s) | Toyota |
| Component | Other (Control System) |
| Production period | October 10, 2002 — November 2002 |
| Vehicles affected | 32 units |
Filing in context
The Other (Control System) is the most frequently cited component category in this archive, appearing in 46 of its 4,890 filings. This filing is one of 10 Toyota notifications from 2002 in this archive. For scale, 4,292 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 1 month.
Issue
On hybrid system-equipped vehicles, a partial error in the battery charging control logic causes intake manifold vacuum supplied to the vacuum brake booster to temporarily drop immediately after a cold engine start. In the worst case, normal brake pedal effort may produce reduced braking effectiveness.
Corrective action
On all vehicles, replace the engine control computer and hybrid inverter unit with corrected parts. (Because supply of corrected parts requires additional time, an interim measure will notify all owners of the defect and applicable operating precautions.)
Affected models & chassis ranges
This filing lists 1 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 |
|---|---|---|
| ZA-GBS12 | CROWN SEDAN | GBS12-0001020 — GBS12-0001053 |
Original Japanese (MLIT source text)
Show the original Japanese filing text
状況
ハイブリッドシステム搭載車において、モータ駆動用バッテリへ充電するための制御が 一部不適切なため、エンジン冷間時の始動直後に真空式ブレーキ倍力装置に作用する吸気 管負圧が一時的に不足することがあり、最悪の場合、通常の踏力ではブレーキの効きが悪 くなるおそれがある。
改善措置
全車両、当該制御用エンジンコンピュータとインバータユニットを対策品と交換する。 （対策品の供給に時間を要することから、当面の暫定措置として、不具合内容と使用上 の注意を全使用者に通知する。）
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=3008614
Related recalls
Same manufacturer, same component
Other Toyota filings involving the Other (Control System), closest to this one by filing date.
Other (Control System) — affects 222 vehicles.
Open recall detail →Other (Control System) — affects 118,355 vehicles.
Open recall detail →Other (Control System) — affects 22,431 vehicles.
Open recall detail →Other (Control System) — affects 54 vehicles.
Open recall detail →Other (Control System) — affects 54 vehicles.
Open recall detail →Other recalls affecting the same models
Filings whose affected type codes overlap with this one, newest first.