95vr6man

i have an 89 civic hatch with a d16y8 motor and all running obd1. i have a harness built by rywire so i know that its good. the ecu will not come on, no check light when the key is on, no spark, no fuel(by "no fuel", i mean no injector pulse). the main relay is also working properly, it turnes on the fuel pump and it runs for 2 seconds as well as the injectors have power for 2 seconds(the obd0 main relay works differntly than the obd1+ where the injectors always have power, they only have power when the ecu sees rotating.. engine starting.. running.. ect.) im curntly using a p28 ecu but im switching it out tonight for a p06 to see if that was the problem. i have checked the following pins for power at the ECU and all the proper grounds as follows:

OBD1
A1-INJ1 INJ1 Brown, Battery Voltage with KOEO on for 2 seconds
A2-INJ4 INJ4 Yellow, Battery Voltage with KOEO on for 2 seconds
A3-INJ2 INJ2 Red, Battery Voltage with KOEO on for 2 seconds
A4-VTS VTEC solenoid GRN/YEL, N/a
A5-INJ3 INJ3 Blue, Battery Voltage with KOEO on for 2 seconds
A6-PO2SHTC O2 sensor (heating element) Org/Wht, Battery Voltage with KOEO
A7-FLR1 fuel pump Grn/BLK, Battery Voltage with KOEO on for 2 seconds
A8-empty A7 and A8 have the same circurt, so they can be the same
A9-IACV IAC valve Blk/Blu, About 10v KOEO on Warm engine
A10-empty
A11- This is EGR Control Solenoid Valve (if the ECU has) Red, N/A
A12-FANC engine coolant temp switch Blu/red, N/A
A13-MIL MIL (check engine light) Blu/wht, N/A
A14-empty
A15-ACC (a/c compressor clutch) Red/Blu, N/A
A16-ALT C alternator Wht/Grn, N/A
A17-IAB IAB Solenoid Pink, N/A
A18- Org/Red, Transmission Control Module (A/T), N/A
A19- White, Intake control solenoid, Battery Voltage with KOEO
A20-PCS EVAP purge control solenoid Red/Grn, N/a
A21-ICM ICM Yel/Grn, Ignition Control Module (ICM) Output signal, About 10V KOEO i dont think ive checked this one, i will when i get home
A22- *per Sander* Ignitor same as A21
A23-PG1 ground Black, Power ground, less than 1V good ground
A24-PG2 ground same as A23 good ground
A25-IGP2 to main relay and to gound for o Yel/blk, Battery positive from Main relay, Battery Voltage with KOEO good power with KOEO
A26-LG1 gound Blk/red, less than 1V good ground

B1-IGP2 to pin A25 Yel/Blk, Battery positive from Main relay, Battery Voltage with KOEO 12v power with KOEO
B2-LG2 ground to shields for CYP & TDC Brown/Blk, Less than 1V good ground
B3- Orange, upshift/downshift comparative input, N/A
B4- Pink, upshift/downshift comparative input, N/A
B5-ACS a/c switch Blu/Blk, A/c input, About 5V with KOEO & A/C off; less than 1V KOER with A/C & blower on
B6-empty
B7- Light green, Park/Neutral switch (A/T), Less than 1V in Park or Neutral with KOEO; 5V in Park or neutral with KOER; Battery voltage in all other positions
B8-PSPSW PSP switch Red/Green, Power steering oil pressure switch, 0V KOEO; Battery Voltage KOER While slowly turning steering wheel
B9-STARTER SIGNAL starter signal Blue/red, Battery Voltage in the START position (clutch depressed on M/T models) havent checked this one but im sure its good since the starter turns
B10-VSS vehicle speed sensor Orange, Pulses 0-12V while turning the left front wheel
B11-CYP P CYP -P Orange, CYP sensor input, N/A
B12-CYP M CYP -M White, CYP sensor signal, N/A
B13-TDC P TDC -P Org/Blue, TDC sensor input, N/A
B14-TDC M TDC -M Wht/Blue, TDC sensor signal, N/A
B15-CKP P CKP -P Blu/Green, CKP Sensor input, N/A
B16-CKP M CKP -M Blu/yel, CKP Sensor signal, N/A

D1-VBU Back Up Power Wht/Yel, Battery positive From battery through Fuse Box, Battery Voltage at ALL times has 12v at all times
D2-BKSW brake switch Grn/wht, Battery voltage at all times
D3-KS Knock Sensor Red/Blue, N/A
D4-SCS service check connector Brown/Wht, About 5V (M/T); About 11V (A/T)
D5-empty
D6-VTM VTEC pressure switch Light Blue, N/A
D7-TXD/RXD (data link connector) Light Green/Red, N/A
D8-empty
D9-ALT F alternator Wht/Red, Alternator Charging Signal, About 4.5V KOEO; Decreases under Electrical load (Headlights & rear defogger on) At warm idle havent checked this one, will check it when i get home and update
D10-ELD electric load detector input Grn/Blk, N/A
D11-TPS TPS Signal Red/Blk, About 0.5V KOEO with throttle fully closed; About 4.5V KOEO with throttle fully open
D12- Wht/Blk, EGR Valve Lift sensor, About 1.2V KOEO
D13-ECT ECT sensor input Yel/Blu, About 5V KOEO (varies with temperature)
D14-PHO2S O2 sensor White, heated 02 sensor Signal, 0.4-0.5V when ignition is turned on; drops to less than 0.1V within 2 minutes
D15-IAT IAT sensor Red/Yel, Intake Air Temperature signal, .05-4.5V KOEO(Varies with temperature)
D16-VREF VREF shows BLANK on my diagram
D17-MAP Map Signal Wht/Blu, About 3V KOEO (Varies with Temperature)
D18- Light Green/Blk, Transmission Control Module (A/T Only), N/A
D19 - Red/Wht, Reference Voltage, About 5V KOEO 4.95V exactly
D20 - Yel/Wht, Reference Voltage, About 5V KOEO 4.95V exactly
D21 - Blue/Wht, Sensor ground, Less than 1V good ground
D22 - Green/Wht, Sensor ground, Less than 1V good ground

ok so what else do i need to check? any ideas or suggestions would be very helpful. thanks!


Details list:
88 civic STD
p28 manual ECU
rywire conversion harness for d16y8 and obd1
d16y8 running the obd2 dist

95vr6man

ok i installed a p06 but no change at all, i know somebody has some advice for me. im stumpted!

95vr6man

ttt, somebody please help me or atleast point me in the right direction

Malakai

If you tried a diff ecu it has to be wiring

95vr6man

yea im sure it is lack of power or signal from something? what all is required for the ecu to come on?

fmrprojects

check the motor grounds. happened to me before, forgot to put the grounds back on and got nothing. all i got was the instrument lights

thahuhstunna

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fmrprojects &raquo;</TD></TR><TR><TD CLASS="quote">check the motor grounds. happened to me before, forgot to put the grounds back on and got nothing. all i got was the instrument lights</TD></TR></TABLE>

95vr6man

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fmrprojects &raquo;</TD></TR><TR><TD CLASS="quote">check the motor grounds. happened to me before, forgot to put the grounds back on and got nothing. all i got was the instrument lights</TD></TR></TABLE>

the motor itself is grounded to the chassis pretty good, i got mad the other night cuz i all i could find on this searching was to add grounds and ground this and ground that so i grounded the hell out of everything lol. the ecu has all its grounds as well as you can see from my pinout. the ecu ground that goes to the thermastat is grounded with another ground point from the chassis to it for extra grounding. is there anything else it could be? does the ecu use any grounds from important sensors? what about the map sensor? also i dont have the speed sensor to the tranny hooked up yet cuz i have to get an obd0 sensor, would that effect the ecu not turning on? sorry for all the questions i just really need to get this car running. thanks!

95vr6man

come on i know somebody has to have an idea for me to try, i cant figure it out for the life of me. somebody please help i need this car to run