civiceg94

i have 99 civic hatchback dx with a d15 vtec motor. and i have a si cluster in it and my check engine light doesn't show. only the srs, brake, and hatch light show. First question how would i check the computer so i could know whats wrong with the car. the maintance light just turn orange. Second question what wires would be wrong on the cluster i would like every light showing. thanks for the help

ke98248

iTrader: (1)

You don't want every light to show, or something would be seriously wrong with your car.. On the other hand, if you want all of the lights to work properly, that's another story.

Your car isn't obd2 when you have a d15b motor in it

vlc92189

the maintainece like might not even mean anything, the cluster isnt from your car, it could of exceed the 7500 or however many miels it needs and itmight just need to be reset by honda, thats all.

but get a odb2to obd1 jumper harness

and convert your car to obd1

civiceg94

well ok thats what i ment when i leave the key on you every light suppose to show up. and then with the car on it turns off. i know what am talking about my car is a obd2 its a 99 and it came with a d15b vtec motor it already has the jumper harness.

ke98248

iTrader: (1)

SWITCHING TO OBD2 TO OB1 1

https://honda-tech.com/zerothread?id=2043291

That will solve the distributor wiring part of it, and this will solve the alternator part of it, if you use the OBD1 alternator. (highly suggested, the regulator is better than the OBD2 ones)


OBD2 wiring harness on your car needs to be spliced and an OBD1 round greed plug must be used.

Your wires on the engine harness are as follows:

WHT/GRN: ALT Control Signal (C)
WHT/RED: ALT Field Circuit Control (FR)
BLK/YEL: IGN Wire (IG)
WHT/BLU: Charing System Light (L)

The colors on the OBD1 plug are as follows:

WHY/YEL: ALT Control Signal (C)
BLU: ALT Field Circuit Control (FR)
BLK/YEL: IGN Wire (IG)
WHT/BLU: Charging System Light (L)

Splice them according to the color code, and your all set.

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YOUR ECU PROBLEM:
Identifying your ECU

To identify your ECU you will need to know its generation, part number and possibly its ROM number.

The ECU can be located in several places: under a metal plate in the passenger's footwell (models up to 91), in the passenger's footwell behind a plastic panel (models 92-99) or by the driver's footwell under a plastic panel (some models 2000+)

The computer is connected via three connectors that pull out when a plastic clip is pressed. Remove the computer, and with a philips screwdriver remove the metal lid from the top of the computer. There may be small daughter circuit board covering some of the main circuitry. Unscrew this and lift it out of the way.
ECU Generations

Honda ECUs run in generations, which use different connectors. Below is a stack of ECUs running from the newest generation at the top to the oldest generation at the bottom.

OBD2B (left 3 plugs used)

OBD2A ECU


OBD1 ECU


OBD0 (JDM PR3 and PWO)

ECU Part Numbers

All Honda ECUs have a part number which is located on the side of the ECU and inside the ECU on the connector. e.g. 37820-P72-A01

The part number consists of three components:

* Honda's part number for ECU, which is always 37820
* Three characters (which are loosely related to the model of car/engine). e.g P72
* Three characters (which are the revision of the ECU) e.g. A01

The middle three characters are the most useful to identify what the ECU is. Different generation ECUs may use the same characters. e.g. a P72 OBD I ECU is different from a P72 OBD II ECU. Here is a list of common ECUs:

* PG7 : 86-89 Integra (86-87 vac advance, 88-89 electronic advance)
* PM5 : 88-91 Civic/CRX DX
* PM6 : 88-91 Civic/CRX SOHC Si
* PM7 : 89-91 DOHC ZC (JDM 'EF' ECU)
* PM8 : 88-91 CRX HF
* PR2 : 89-91 ZC (Euro)
* PR3 : 89-91 JDM B16A EF8/9
* PR3 -J00 or J51 : 92 JDM Integra B16A EF8/9
* PW0 : 89-91 JDM B16A EF8/9 DA6-XSi
* PR4 : 90-91 Integra LS/GS
* PS9 : 88-91 4 door Civic EX Auto
* P05 : 92-95 OBD-1 Civic CX
* P06 : 92-95 OBD-1 Civic DX
* P07 : 92-95 OBD-1 Civic VX
* P08 : 92-95 OBD-1 Civic D15 JDM
* P0A : 94-95 OBD-1 Accord EX
* P13 : 93-95 OBD-1 Prelude Vtec
* P14 : 93-95 OBD-1 Prelude Si (non Vtec)
* P27 : 92-95 OBD-1 EG JDM Civic 1600 sohc
* P28 : 92-95 OBD-1 Civic Si/Ex
* P30 : 92-95 OBD-1 DelSol DOHC Vtec Si/EG SiR
* P54-G31 : 1997 Honda Accord 1.8 LS
* P61 : 92-93 OBD-1 Integra GSR
* P72 : 94-95 OBD-1 Integra GSR
* P72 : 96-00 OBD-2 Integra GSR
* P73 : 96-00 OBD-2 Integra Type-R (JDM & USDM)
* P74/75: 92-95 OBD-1 Integra LS/GS
* P75 : 96-00 OBD-2 Integra LS/GS
* P2N : 96+ OBD-2 Civic HX Coupe
* P2P : 96+ OBD-2 Civic EX Coupe
* P2E : 96+ OBD-2 Civic DX Coupe
* P2M : 96+ OBD-2 NZ Civic SOHC VTEC
* P2T : 99+ OBD-? Civic Si Coupe
* P5P : 97-00 OBD-2 Prelude Type-S (JDM ECU)
* PBA : 97+ US Acura 1.6EL
* PCT : 98+ JDM ITR / CTR
* PCX : 99+ OBD-? S2000

civiceg94

when i put in the cluster it was green it just change color like two weeks ago to orange. i already drove like 1200 miles on the cluster just in case

civiceg94

i can't just take my 2000 si ecu and take out the jumper harmenss. to see the codes its throwing?

civiceg94

its a P2T the other ecu i have

ke98248

iTrader: (1)

You should be able to get a obd code reader from an automotive store Plug and play

civiceg94

oo foreal thanks just wanted to make sure before i go ahead and do it you know. i drive it everyday so its running. i just want to see if their is a problem. so i could correct it before my car dies again on me. alright so i take out the jumper harness and connect my P2T ecu to see what is going on? right?