Nissan 6303 manual

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[...]

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[...]

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[...]

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[...]

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[...]

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

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 [...]

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[...]

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 [...]

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[...]

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 [...]

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[...]

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.[...]

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[...]

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[...]

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

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[...]

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[...]

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 [...]

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 [...]

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[...]

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[...]

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 [...]

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[...]

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 [...]

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

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[...]

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[...]

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[...]

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[...]

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[...]

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[...]

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 [...]

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[...]