JECS

Short description: Automotive parts manufacturer

JECS Corporation (formerly Japan Electrical Control Systems Co Ltd) is an automotive components company headquartered in Isesaki, Gunma, Japan and a wholly owned subsidiary of Hitachi. Its principal products are electronic control units, software, semiconductors, mechatronics, resin molding, inspection technology and material analysis.

JECS was formed in June 1973.[1] It was a joint venture between Robert Bosch GmbH, Nissan Motor Co. and Diesel Kiki Co., Ltd.. It enabled Nissan to use Bosch's engine control technology, and gave Bosch access to the Japanese market. JECS later expanded to manufacture many other automotive parts besides EFI systems.

## Contents

* 1 History
* 2 Motorsport Sponsorship
* 3 Applications
* 4 Technology
* 4.1 Electronic Fuel Injection
* 4.1.1 L-Jetronic
* 4.1.2 LH-Jetronic
* 5 References

## History

* 1956 Unisia established.
* June 1973 JECS formed.
* 1993 JECS merges with Atsugi Unisia, becoming Unisia JECS Corp.
* November 1999 The French clutch company Valeo buys shares in Unisia JECS clutch division to gain entry to the Japanese market.[2] This closely follows Renault's purchase of a controlling interest in Nissan, April of the same year.

* Mid 2001 Unisia JECS forms joint venture with Bosch Braking Systems Co. to produce power steering systems.[3]

* October 2002 100% of Unisia JECS Corp. bought by Hitachi, delisted from stock market, renamed Hitachi Unisia Automotive, Ltd.. Previously, Nissan Motor, Hitachi and Robert Bosch owned 25%, 17% and 10% respectively.[4]

* 2003 Unisia JECS opens factory in Shenzhen, China, to cut costs as demanded by Nissan.[5]

* 2004 Hitachi Unisia Automotive Ltd. merged into Hitachi, Ltd.
* 2004 Unisia JECS opens factory in Guangzhou, China, to make water pumps and valves.

## Motorsport Sponsorship

Unisia JECS sponsored the Hasemi Motorsport team in JTCC and JGTC from 1991 until 2002. The Unisia JECS Skylines (GT500) and Silvias (GT300) also featured in video games & toys.

## Applications

16-bit ECUs from JECS were produced for the 1993+ Nissan 300ZX.

## Technology

### Electronic Fuel Injection

Mid 1980s JECS LH-Jetronic ECU. 40 pin IC bottom left is Hitachi Motorola 6800 clone, 28 pin IC (socketed) immediately right is 16kB ROM containing maps. JECS logo bottom left.

Bosch first produced the Jetronic EFI system in 1967. K-Jetronic & L-Jetronic followed from around 1973[6] which is when Nissan became involved.

#### L-Jetronic

Early JECS systems were L-Jetronic, with Bosch moving vane airflow meters. These systems used a mixture of German & Japanese parts. The electronics were Japanese, the sensors often German, the fuel pumps/regulators made under license to Bosch by DENSO.

#### LH-Jetronic

Late 1990s JECS LH-Jetronic ECU. Much smaller, more integration, all custom ICs, maps no longer easily accessible. 2Unisia JECS logo bottom right and on main IC.

By the mid-1980s, JECS were using LH-Jetronic, and the new Bosch hotwire mass airflow meter. The early JECS LH-Jetronic systems were based on a Motorola 6800 architecture, using many Hitachi components. The earliest hotwire meters were still from Germany, but by the end of the 1980s all of the system components (pumps, sensors, injectors, ECU) were being made in Japan.

## References

1. ↑ "History of Bosch Group in Japan.". 2006-09-02. http://www.bosch.co.jp/en/japan/history_japan/.
2. ↑ "Business Development Asia Auto Newsletter December 1999.". 2006-09-03. http://www.bdallc.com/news/Auto/pdf/Autonews Dec99.pdf.
3. ↑ "Business Development Asia Auto Newsletter December 2000.". 2006-09-03. http://www.bdallc.com/news/Auto/pdf/Asian Automotive Newsletter December 2000.pdf.
4. ↑ "Business Development Asia Auto Newsletter June 2002.". 2006-09-02. http://www.bdallc.com/news/Auto/pdf/Asian Auto Newsletter June 2002.pdf.
5. ↑ "Business Development Asia Auto Newsletter February 2002.". 2006-09-02. http://www.bdallc.com/news/Auto/pdf/Asian Auto Newsletter February 2002.pdf.
6. ↑ Siegel, Christine (2006). Journal of Bosch History. Bosch. pp. 30–33.

* v
* t
* e

Nissan Motor Company

Marques|

Current
Datsun
Infiniti
Nissan
Venucia1
Defunct/Integrated
Prince
Kurogane
Aichi
Shatai
Ohta Jidosha
Sold
Nissan Diesel

Divisions and subsidiaries|

* Autech
* Infiniti
* Nismo
* Nissan Motor Ibérica
* Nissan Motor India Private Limited
* Nissan Motor Manufacturing UK
* Nissan South Africa

Joint ventures|

* Alfa Romeo Nissan Autoveicoli S.p.A.
* Dongfeng Motor Co., Ltd. (50%)
* Ghandhara Nissan
* Nissan Motor Indonesia
* Nissan Philippines
* NMKV (50%)
* Renault–Nissan–Mitsubishi Alliance
* Tan Chong Motor

Shareholdings|

* Mitsubishi Motors (34%)
* Renault (15%)

Current Datsun vehicles|

* Cross
* Go
* Go+
* mi-Do
* on-Do
* redi-Go

Current Nissan vehicles|

| Cars|

* 370Z/Fairlady Z
* Altima/Teana
* Cima
* Fuga
* GT-R
* Lannia
* Leaf
* Livina
* March/Micra
* Maxima
* Note
* Sentra/Sylphy
* Skyline
* Tiida
* Versa/Almera/Sunny/Latio

|

Pickup Trucks|

* Clipper Truck
* Frontier/Navara
* NP200
* Patrol Cab Chassis
* Titan

SUVs/Crossovers|

* Armada
* Juke
* Kicks
* Murano
* Pathfinder
* Patrol
* Patrol Y61
* Qashqai/Rogue Sport
* X-Trail/Rogue
* Terra

Vans/Minivans|

* Caravan
* Elgrand
* NV150 AD
* NV200/Evalia
* NV300
* NV350
* NV400
* NV1500
* NV2500 HD
* NV3500 HD
* Serena

Kei cars|

* Dayz
* NT100 Clipper
* NV100 Clipper
* Roox

Commercial trucks|

* NT400 Cabstar
* NT450 Atlas

Buses|

* Civilian

Discontinued vehicles|

* DC-3
* 100NX
* 180SX
* 200SX
* B-210
* 240SX
* 240Z
* 280ZX
* 300C
* 300ZX
* 310
* 350Z
* 510
* 810
* 1200
* Almera Tino
* Altra (EV)
* Aprio
* Atleon
* Auster
* Avenir
* Bassara
* Be-1
* Bluebird
* Caball
* Cablight
* Cedric
* Cefiro
* Cherry
* Crew
* Cube
* Datsun Truck
* Dualis
* Echo
* Expert
* Fairlady
* Figaro
* Gazelle
* Gloria
* Grand Livina
* Hardbody Truck
* Homy
* Hypermini
* Interstar
* Junior
* Kubistar
* Lafesta
* Largo
* Laurel
* Leopard
* Liberty
* Mistral
* Moco
* Multi
* Murano CrossCabriolet
* NX
* NT500
* Paladin
* Pao
* Pino
* Pintara
* Platina
* Prairie
* Presage
* Presea
* Primastar
* Primera
* Prince Royal
* President
* Pulsar
* Pulsar EXA
* Pulsar GTI-R
* Quest
* R390 GT1
* R'nessa
* Rasheen
* Roadster-Road Star
* S-Cargo
* Saurus
* Saurus Jr
* Sileighty
* Silvia
* Skyline Crossover
* Skyline GT-R
* Stagea
* Stanza
* Terrano
* Terrano II
* Terrano (India)
* Trade
* Vanette
* Violet
* Wingroad
* Xterra

Concept vehicles|

* 126X
* 216X
* 240Z Concept
* 270X
* 300 Bambu
* 300 Seta
* 300XM
* 315-a
* AA-X
* Actic
* AD-1
* AD-2
* AL-X
* Alpha T
* Amenio
* AP-X
* AQ-X
* ARC-X
* AXY
* AZEAL
* Bevel
* BladeGlider
* Boga
* C-Note
* Chapeau
* Chappo
* Cocoon
* Compact Sport
* CONCEPT 2020 Vision Gran Turismo
* CQ-X
* Crossbow
* CUE-X
* Cypact
* Denki Cube
* Duad
* Dunehawk
* Effis
* Ellure
* Esflow
* ESV
* EV Guide II
* EV Truck
* Evalia
* Extrem
* FEV
* FEV-II
* Foria
* Forum
* Friend-ME
* Fusion
* Gobi
* GR-1
* GR-2
* Gripz
* GT-R50
* Hi-Cross
* ideo
* IDS
* IDx
* IMk
* IMx
* IMq
* IMs
* Intima
* Invitation
* Jikoo
* Judo
* Jura
* Kicks
* Kino
* KYXX
* Land Glider
* Lannia
* LEAF
* LUC-2
* MID4
* Mixim
* mm.e
* Moco
* Nails
* NCS
* NEO-X
* NRV-II
* Nuvu
* NV2500
* NX-018
* NX-21
* Pivo
* Pivo 2
* Pivo 3
* Qazana
* Redigo
* Resonance
* Round Box
* Saurus
* Serenity
* Sport Concept
* Sport Sedan
* Stylish VI
* SUT
* Sway
* TeRRA
* Terranaut
* Tone
* Townpod
* Trailrunner
* TRI-X
* URGE
* UV-X
* Vmotion 2.0
* Xmotion
* XIX
* XVL
* Yanya
* Z Concept
* Zaroot

Engines|

| Straight-3|

* HR
* UD

|

Straight-4|

* A
* BD
* C
* CA
* CD
* CG
* CR
* D
* E
* FD
* FJ
* G (Prince)
* G (Nissan)
* GA
* GB
* H
* HR
* J
* KA
* KR
* L
* LD
* MA
* MR
* NA
* QD
* QG
* QR
* SD
* SR
* TD
* UD
* YD
* Z
* ZD

Straight-6|

* H
* L
* LD
* P
* RB
* RD
* S20
* SD
* TB
* TD
* UD

VEJ30

VRH35
W64

V12
GRX-3

VRT35

Places|

* Nissan Engine Museum
* Nissan Proving Grounds
* Nissan Stadium (Nashville)
* Nissan Stadium (Yokohama)

Other|

* ATTESA
* CarWings
* dCi
* HICAS
* NAPS
* Nissan Motors v. Nissan Computer
* VVEL
* VVL
* Yokohama F. Marinos

* 1A brand of Dongfeng Motor Co., Ltd.

* Category

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