Manual Nissan 6303

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  • Nissan 6303 - page 1

    T YPE #1 6802/630 3 USB Consult Hardw are Installation Man ual V3.2 Type 1 - Rev3A/3B / 4 Boards (JECS ECCS 1984-1989 Legacy Engine Control Units, HITACHI ECCS/NICS 1985-1989 Legacy Engine Control Units) Copyr ig ht 2004, 2005, 2006, 2007, 2008, 2009 NIStune D evel opments ...

  • Nissan 6303 - page 2

    NIStune Type 1 Hardware Installation Page 2 of 2 I I N N T T R R O O D D U U C C T T I I O O N N Welcome to NI Stune. The NI Stune hardware and software solution provides a means for the c ar enthusiast to retune their vehicle whilst retaining their factory ECU and its default programming . This solution provides many a dvantages ove r aftermarke t ...

  • Nissan 6303 - page 3

    NIStune Type 1 Hardware Installation Page 3 of 3 TERMS AND CONDITIONS Nistune Develo pments has performed necessary measures to ensure that the Nistun e softwar e and boards a re built to high st andards. By using this p roduct you agree to the follow in g terms: I MPORTA NT - READ CAREFU LL Y: This License A gree ment ( Agreem ent ) is a legal agr ...

  • Nissan 6303 - page 4

    NIStune Type 1 Hardware Installation Page 4 of 4 Nistune Develo pments may, from time to time, revise or update th e Softw are. I n so doing, Nistun e Deve lopments incurs no obligation to furn ish such revision or updat es to yo u. 9. WARRA NTY The author of this Software has verified as best as possible that t he main features and functions of th ...

  • Nissan 6303 - page 5

    NIStune Type 1 Hardware Installation Page 5 of 5 WA RNING If y our ECU pulses the fuel pump, injectors, fuel regulator, flashe s LEDs ra ndomly (or they just stay on w hen they shouldn’t) or y our engine does not start then your ECU may not have y our boa rd fitted correctly. Testing has s how n on early Nissan ECUs that this c an potentially kee ...

  • Nissan 6303 - page 6

    NIStune Type 1 Hardware Installation Page 6 of 6 TABLE OF CON TENTS 1. Removing the ECU......................................................................................................................................... 7 2. Opening the ECU ........................................................................................................ ...

  • Nissan 6303 - page 7

    NIStune Type 1 Hardware Installation Page 7 of 7 1. Remov ing the ECU Loc ate the ECU in vehicle to be modified. The location of the fa ctory ECU can be identified from the vehicle service manual. The picture below shows the location of the ECU in the L HS passenger f oot well of an R31 Sky line. Disconnect y our negative battery terminal prior to ...

  • Nissan 6303 - page 8

    NIStune Type 1 Hardware Installation Page 8 of 8 2. Opening the ECU For NI S tune board installation, firstly remove the top and bottom lids from the ECU. Screws require a correctly matched Philips head screw driver as they are usually fitt ed from factory with a red or blue epoxy which requires some force in order to remove the scre ws. The follow ...

  • Nissan 6303 - page 9

    NIStune Type 1 Hardware Installation Page 9 of 9 3. Resocketing the ECU A . 1984-1985 Dual Board - Dual ROM ECUs Vehicles: Early Z31 300ZX and E12 Nissan Exa. This is a multiboard ECU with a 1K and 8K ROM chip. The two chips need to be removed and jumpers changed on the boa rd before the NI Stune board can be installed. The ROM images must be read ...

  • Nissan 6303 - page 10

    NIStune Type 1 Hardware Installation Page 10 of 10 To remove the two ROM chips (U3 and U4) desolder f rom the top side of the ECU. Be very c areful with the heat of the desoldering gun beca use the pads on these ECUs lift very easily. I t doesn't take much to break a trac k on these earlier circ uit boards. I nsert the supplied I C socket in I ...

  • Nissan 6303 - page 11

    NIStune Type 1 Hardware Installation Page 11 of 11 The below picture shows the removed I Cs, installed 28 pin m achine drilled socket and four wire link jumpers installed in their new locations. Next remove R15 which is below J9/J 10. This is no longer used with the NI Stune board installed. Note that You will no longer be able to use the fa ctory ...

  • Nissan 6303 - page 12

    NIStune Type 1 Hardware Installation Page 12 of 12 B. 1986 Single Board - Dual ROM ECUs Vehicles: Z31 300ZX VG30 1986-1987, CR31 / VL / VLT RB30 Some 1986 era ECU have both a 28 pin ROM and 24 pin ROM chip. These are loca ted next to each other. Not to be confused with the 24 pin RAM chip that is located next to the HD6802 processor. 1. Remove both ...

  • Nissan 6303 - page 13

    NIStune Type 1 Hardware Installation Page 13 of 13 2. Where the 28 pin ROM has been removed, replac e this with a 28 pin machine drilled socket. Fill in the throughholes where the 24 pin ROM was mounted with solder. Note the orientation of the socket must have the crescent indent fac ing the same direc tion of the previously i nstalled ROM chip. 3. ...

  • Nissan 6303 - page 14

    NIStune Type 1 Hardware Installation Page 14 of 14 C. 1987 Single Board - Si ngle ROM ECUs Vehicles: Z31 300ZX VG30 1987, VL RB30 These ECUs only contain a single chip such as pictured below one 28 pin ROM chip 1. Remove the factory ROM chip, install a 28 pin machine drilled socket 2. Then test that the ECU still works by placing the fac tory ROM c ...

  • Nissan 6303 - page 15

    NIStune Type 1 Hardware Installation Page 15 of 15 D. 1989 Single Board - Si ngle ROM - Header Connector ECUs Vehicles: Z31 VG30 late, HR31 RB20, S13 CA18, A31 RB20, EK10 MA09, S13 KA24E These ECUs either only contain a single chip such as shown in the pictures below. These contain a header connector which the NI Stune board connects to on this par ...

  • Nissan 6303 - page 16

    NIStune Type 1 Hardware Installation Page 16 of 16 S13 CA18DE/DET A31 RB20DE/DET ...

  • Nissan 6303 - page 17

    NIStune Type 1 Hardware Installation Page 17 of 17 EK10 MA09ERT / S13 KA24E 1. Remove the factory ROM chip, install a 28 pin machine drilled socket 2. Then test that the ECU still works by placing the fac tory ROM chip i n the socket and checking the vehicle runs and flashes L EDs when in diagnostic mode. I nstallation of the NI Stune board now fol ...

  • Nissan 6303 - page 18

    NIStune Type 1 Hardware Installation Page 18 of 18 4. CPU Header Connector Installation (X1) The NI Stune board will come supplied with two header conne ctors. One is for the USB socket and the other connects to the ECU processor (marke d HD6802 or HD6303) Early model ECUs wil l require direct connec tion to the processor, whilst later model ECUs p ...

  • Nissan 6303 - page 19

    NIStune Type 1 Hardware Installation Page 19 of 19 A . Early Model ECUs You need to solder the following wire s to the HD6802 processor similar to the picture below. The header c onnector y ou are supplied with is marked with a '1' on the left hand side. This corresponds to the 1 on the diagra m below. Solder the ends of the wires to the ...

  • Nissan 6303 - page 20

    NIStune Type 1 Hardware Installation Page 20 of 20 B. Later M odel ECUs La ter model ECUs connect directly to the circuit board using through holes provided by Nissan. Loc ate the header connec tor through holes and silkscree n and solder directly to this. 1989 Z31 300ZX Connector Wire 1 - ECU throughhole #33 Connector Wire 2 - ECU throughhole #32 ...

  • Nissan 6303 - page 21

    NIStune Type 1 Hardware Installation Page 21 of 21 J30 Maxima Connector Wire 1 - ECU throughhole D Connector Wire 2 - ECU throughhole C Connector Wire 3 - ECU throughhole B Connector Wire 4 - ECU throughhole A S13 CA18 / S13 KA24E Connector Wire 1 - ECU throughhole #1 Connector Wire 2 - ECU throughhole #2 Connector Wire 3 - ECU throughhole #3 Conne ...

  • Nissan 6303 - page 22

    NIStune Type 1 Hardware Installation Page 22 of 22 A31 RB20 Connector Wire 1 - ECU throughhole near 61 Connector Wire 2 - ECU throughhole ........... Connector Wire 3 - ECU throughhole ........... Connector Wire 4 - ECU throughhole near 9 HR31 RB20 Early : Connector Wire 1 - ECU throughole 3 Connector Wire 2 - ECU throughole 1 Connector Wire 3 - EC ...

  • Nissan 6303 - page 23

    NIStune Type 1 Hardware Installation Page 23 of 23 5. USB Connector Installation (X2) The USB-B sty le connector that comes with the NI S tune board is recommended for install where the diagnostic potentiometer normally sits. It is up to the owner where they wish to locate this port. The existing bracket from the diag nostic potentiometer fits the ...

  • Nissan 6303 - page 24

    NIStune Type 1 Hardware Installation Page 24 of 24 Then put the USB-B socket inside the bra cket and refa sten the bracket as see n below. I f y our ECU has no daughter board then the USB conne ctor board may face upwards. I f you ar e using a daughter boar d then ensure that the USB ada ptor board faces downwa rds and does not touch any other comp ...

  • Nissan 6303 - page 25

    NIStune Type 1 Hardware Installation Page 25 of 25 6. Inserting The Bo ard Push the NIStune boar d into the machine drilled socket previously inst alled. Connect the CPU cable to connector X1 and the USB c able to connector X2. Ensure the PGM jumper is not soldered if the board was previously programmed. Where there is a knock sensor boar d, being ...

  • Nissan 6303 - page 26

    NIStune Type 1 Hardware Installation Page 26 of 26 HR31 HR20 Installation ...

  • Nissan 6303 - page 27

    NIStune Type 1 Hardware Installation Page 27 of 27 7. Securing The Board I s is the responsbility of the installer to ensure that an vibration that the ECU is subjected with the installed NI Stune board (ie unsurface d roads, train lines, speed humps, gra tes etc) will not affect to opera tion of the vehicle. The NI Stune board must be installed us ...

  • Nissan 6303 - page 28

    NIStune Type 1 Hardware Installation Page 28 of 28 8. Installing In The Vehi cle Put the ECU casing back toge ther and reinstall ECU into the metal bracket. The dia gnostic indicator now containing the USB-B port should be accessible as seen be low. Reinstall ECU into vehicle. You may need to enlarg en kick panel diag nostics hole for correc t line ...

  • Nissan 6303 - page 29

    NIStune Type 1 Hardware Installation Page 29 of 29 9. Upgrading ECU MA F hardw are Early model engine control units such as Z31, R31, most HR31 (1985-1988) and VL Turbo use a 2 -7 volt hotwire airflow meter. These air flow meters then have their voltag e converte d to 0 - 5 volts for the internal microprocessor using wha t is known as 'opamp&a ...

  • Nissan 6303 - page 30

    NIStune Type 1 Hardware Installation Page 30 of 30 6. Rewire the AFM as per pinouts in the AFM section of the Nistune Software Users Manual 1987 - 1989 Z31 1. Disconnect parallel resistors pictured be low and and remove resistor R201 2. Rewire the AFM as per pinouts in the AFM section of the Nistune Software Users Manual ...

  • Nissan 6303 - page 31

    NIStune Type 1 Hardware Installation Page 31 of 31 1986-1988 HR31 RB20DET Note the later y ear models (such as MEC-R70 do not require this modification) 1. Loc ate opamp daughte r board 2. On reverse side of ECU count fr om the outside edge inwards a nd bridge pins 7 and 8 with solder. 3. Connect a 5.1 volt zener diode with stripe side on pin 8 and ...

  • Nissan 6303 - page 32

    NIStune Type 1 Hardware Installation Page 32 of 32 10. Reading the factory ROM image ECU Type A (1984-1985) These ECUs have two non-standard ROM chips (1K a nd 8K) which require spec ial adaptors to read them in a standard EPROM programmer . I t is recommended y ou send the ECU to NIStune developments for reading a nd board installation. We plan to ...

  • Nissan 6303 - page 33

    NIStune Type 1 Hardware Installation Page 33 of 33 1. So ensure y ou select the correct chip ty pe matching y our ROM/EPROM chip. Then select the read option which will load the contents from the chip into memory . 2. Then check the EPROM contents using a he x editor to ensure y ou read it corre ctly . S hould have data such as below. 3. Then save ...

  • Nissan 6303 - page 34

    NIStune Type 1 Hardware Installation Page 34 of 34 R R E E V V I I S S I I O O N N H H I I S S T T O O R R Y Y DATE VERSION DESCRIPTION 21/12/2005 1.0 Document Creation 24/01/2006 1.0.1 Correct HD6802 wiring to X3 hea der connection 11/6/2006 1.1 Pictures include Rev 2 board Cover different Z 31 variants Add HR31/CA18 ECU installation documentation ...

Manufacturer Nissan Category Stereo Receiver

Documents that we receive from a manufacturer of a Nissan 6303 can be divided into several groups. They are, among others:
- Nissan technical drawings
- 6303 manuals
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All of them are important, but the most important information from the point of view of use of the device are in the user manual Nissan 6303.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Nissan 6303, service manual, brief instructions and user manuals Nissan 6303. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Nissan 6303.

A complete manual for the device Nissan 6303, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Nissan 6303 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Nissan 6303.

A complete Nissan manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Nissan 6303 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Nissan 6303, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Nissan 6303, that we can find in the current document
3. Tips how to use the basic functions of the device Nissan 6303 - which should help us in our first steps of using Nissan 6303
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Nissan 6303
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Nissan 6303 in a specific country, if it was not possible to solve the problem on our own.

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