Well pretty much like the title states I am trying to locate some information on how to make a conversion harness (obdo-obd1)

I am NOT interested in purchasing it I would like to make it myself. I am very confident in being able to make it myself. After all I made a ecu test harness that works perfect

So if anybody has some links it would be very helpful. I looked through all 4 pages of the Faqs and didn't notice anything.

I am not quite sure what to search so I just posted this up.

Help a H-T brother out

shane
ps: I have at least 40 hours a week to make this harness

 

I'm assuming it is a matter of having the diagrams (pin-outs) for both ECUs. An OBD1 and an OBD0 (the one's you're using). Then taking the (for example) injector wire from A2 (totally making this up) and run it to where it needs to be on the OBD1 ECU (i.e. E3 or something). Get what I'm saying? I'm sure it's probably a little more complicated than that, but I'm thinking that's basically what is going on.

 

easy...find the pinouts for the stock ecu in your car, then the pinouts for the ecu you are going to be using. Then connect the dots. Get connectors and pins and compatible pin crimper. If you didn't already know how to do this, its probably something you shouldn't be doing yourself.

 

yeah I figured that but to be on the safe side I would like to see if someone has some pictures or write up on how to do it.

Like I stated before I have made a ecu test harness this is the same exact thing except you make it with 3 additional plugs so you can test the wires. (in fact I'll probably do this to the obdo-1 conversion harness)

-Shane

 

bump

 

edit


Modified by EFRue57 at 5:29 AM 7/14/2005

 

Was that for the pinouts? If so, thanks.

Is there a direct link anywhere that shows how to do this? Just curious.

bump

 

sorry that was just for vtec.....give me a minute and i will find the correct one.

 

OBD0

A01-INJ1 fuel injector control # 1
A02-PG1 Ground
A03-INJ2 fuel injector control # 2
A04-PG2 Ground
A05-INJ3 fuel injector control # 3
A06-**
A07-INJ4 fuel injector control # 4
A08-VTS VTEC solenoid
A09-**
A10-**
A11-IACV from electronic air control valv
A12-FLR1 fuel pump control
A13-IGP1 power Input
A14-FLR2 fuel pump control
A15-IGP2 power Input
A16-**
A17-**
A18-**
B01-VBP Battery Backup
B02-**
B03-ACC a/c compressor clutch relay cont
B04-FANC
B05-VTM VTEC pressure switch
B06-MIL check engine warning light
B07-**
B08-ACS a/c on input
B09-**
B10-CYP P crank sensor (1)
B11-**
B12-CYP M crank sensor (2)
B13-**
B14-ALT alternator output signal
B15-**
B16-VSS VSS
B17-**
B18-**
B19-KS Knock sensor
B20-SCS ignition timing adjusting connec
C01-CKP P CYL sensor (1)
C02-CKP M CYL sensor (2)
C03-TDC P TDC sensor (1)
C04-TDC M TDC sensor (2)
C05-IAT intake air temperature sensor
C06-ECT coolant temperature sensor
C07-TPS throttle angle sensor
C08-O2S Dual O2 Sensor (JDM)
C09-PA atomosphere pressure sensor inpu
C10-BKSW brake light switch
C11-MIL ground
C12-SG2 TPS GND
C13-VCC1 TPS 5V
C14-SG1 MAP GND
C15-VCC2 MAP 5V
C16-O2S oxygen sensor


OBD1

A1-INJ1 INJ1
A2-INJ4 INJ4
A3-INJ2 INJ2
A4-VTS VTEC solenoid
A5-INJ3 INJ3
A6-PO2SHTC O2 sensor (heating element)
A7-FLR1 fuel pump
A8-empty
A9-IACV IAC valve
A10-empty
A11-empty
A12-FANC engine coolant temp switch
A13-MIL MIL (check engine light)
A14-empty
A15-ACC (a/c compressor clutch)
A16-ALT C alternator
A17-IAB IAB Solenoid
A18-empty
A19-**
A20-PCS EVAP purge control solenoid
A21-ICM ICM
A22- *per Sander* Ignitor
A23-PG1 ground
A24-PG2 ground
A25-IGP2 to main relay and to gound for o
A26-LG1 gound
B1-IGP2 to pin A25
B2-LG2 ground to shields for CYP & TDC
B3-**
B4-**
B5-ACS a/c switch
B6-empty
B7-**
B8-PSPSW PSP switch
B9-STARTER SIGNAL starter signal
B10-VSS vehicle speed sensor
B11-CYP P CYP -P
B12-CYP M CYP -M
B13-TDC P TDC -P
B14-TDC M TDC -M
B15-CKP P CKP -P
B16-CKP M CKP -M
D1-VBU Back Up Power
D2-BKSW brake switch
D3-KS Knock Sensor
D4-SCS service check connector
D5-empty
D6-VTM VTEC pressure switch
D7-TXD/RXD (data link connector)
D8-empty
D9-ALT F alternator
D10-ELD electric load detector
D11-TPS TPS Signal
D12-**
D13-ECT ECT sensor
D14-PHO2S O2 sensor
D15-IAT IAT sensor
D16-VREF VREF
D17-MAP Map Signal
D18-**
C19-VCC1 MAP 5V
C20-VCC2 TPS 5V
C21-SG1 MAP GND
C22-SG2 TPS GND

 

I am just curious why when you state obdo does it say vtec in some of the locations? Is that where it will need to be added?

 

yea......that's the pinouts for a PR3 ecu