Need OE Wiring Schematics
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H-T White Ops
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From: USA
Need OE Wiring Schematics
Looking for the following schematics from Honda for the 1992-1995 Honda Civic EX:
Charging System
PGMI-FI / ECU
Please do not link me to the ECU pinouts made by others. I'm not looking for that.
Thanks.
Charging System
PGMI-FI / ECU
Please do not link me to the ECU pinouts made by others. I'm not looking for that.
Thanks.
Thread Starter
H-T White Ops
Joined: Feb 2004
Posts: 17,603
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From: USA
Re: Need OE Wiring Schematics
That looks an awful lot like what Autozone has on their site.
The reason I'm asking for this is somewhat complicated.
Okay, it's my '88 CRX HF with a '98 D16Y8 (Civic EX) running a '93 chipped P28.
I've been eating alternators and batteries for awhile here and so I was going over my wiring and it appears I have some inconsistencies in the ECU jumper harness.
The two biggest issues with the wiring that I'm interested in is what the ECU pinouts I've seen seem to point me to this:
A21 (P28 ECU side of jumper harness) (Alternator Control ALTC) goes to B03 (OBD0 side of jumper harness) (Alternator FR Signal ALTFR).
and
D05 (P28 ECU side of jumper harness) (Alternator FR Charge Signal) goes to B17 (OBD0 side of jumper harness) (Alternator Control ALTC).
But the electrical troubleshooting manual shows a bit of a typo on some end as well, I think...
Content from the ETM:
So the manual itself calls both C and FR...
I have the manual calling both C and FR, O'Reilly's computer tells me what each pin on the voltage regulator is supposed to be as well (C, FR, IG, L). I'm not sure what is right and what is not.
So I'm trying to make sure of the wiring on the P28 (since that's what I have in there) to continue on with my tracing and checking.
The reason I'm asking for this is somewhat complicated.
Okay, it's my '88 CRX HF with a '98 D16Y8 (Civic EX) running a '93 chipped P28.
I've been eating alternators and batteries for awhile here and so I was going over my wiring and it appears I have some inconsistencies in the ECU jumper harness.
The two biggest issues with the wiring that I'm interested in is what the ECU pinouts I've seen seem to point me to this:
A21 (P28 ECU side of jumper harness) (Alternator Control ALTC) goes to B03 (OBD0 side of jumper harness) (Alternator FR Signal ALTFR).
and
D05 (P28 ECU side of jumper harness) (Alternator FR Charge Signal) goes to B17 (OBD0 side of jumper harness) (Alternator Control ALTC).
But the electrical troubleshooting manual shows a bit of a typo on some end as well, I think...
Content from the ETM:
Code:
B03 (Alternator RF Signal) (BLU) --> C210 (Right side of engine compartment) #7 (WHT/YEL) --> Voltage Regulator wire C (Computer)
Code:
D05 (Alternator Output Signal) (YEL) --> C210 (Right side of engine compartment) #13 (BLU) --> Voltage Regulator wire FR (Frequency)
I have the manual calling both C and FR, O'Reilly's computer tells me what each pin on the voltage regulator is supposed to be as well (C, FR, IG, L). I'm not sure what is right and what is not.
So I'm trying to make sure of the wiring on the P28 (since that's what I have in there) to continue on with my tracing and checking.
Thread Starter
H-T White Ops
Joined: Feb 2004
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From: USA
Re: Need OE Wiring Schematics
Also, your wire colors don't match up in those two pics. Pic 2 (ECU) shows WHT/YEL, GRN/RED, and PNK going to the charging system, but pic 1 (charging system) shows WHT/GRN, WHT/RED, and WHT/BLU.
I know my wiring changes at a shock tower plug, but I don't see any such thing in your diagrams.
I know my wiring changes at a shock tower plug, but I don't see any such thing in your diagrams.
Thread Starter
H-T White Ops
Joined: Feb 2004
Posts: 17,603
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From: USA
Re: Need OE Wiring Schematics
I know a site that has manuals, but does not have the ETM. The site I know of has a mess of '92-'95 manuals... but I haven't yet managed to download the US one (they're not really labeled to say what is what). I don't need other countries' versions screwing me up more with this. lol
Last edited by NOFX; Apr 23, 2013 at 05:12 PM. Reason: clarification
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Re: Need OE Wiring Schematics
I just looked through the '93 ETM and the diagrams are pretty similar to what HondaPartsHero already posted. I'd post them anyway but it's a hard copy of the manual.
The wire colors are different though
C is white/yellow and goes to white/yellow (A16)
FR is blue and goes to pink (D9)
IG is black yellow
L is white/blue
ELD is green/red and goes to D10
Everything in the ETM checks out with Katman's pinouts on FF-Squad as far as the OBD1 side of things go, unfortunately I don't have an '88 - '91 ETM, which arguably would have been the more useful of the two to have.
The big question is are they OEM Denso alternators or crappy Mitsubishi based remans? If it was me I'd be very tempted to swap ALTC and ALTFR.
The wire colors are different though
C is white/yellow and goes to white/yellow (A16)
FR is blue and goes to pink (D9)
IG is black yellow
L is white/blue
ELD is green/red and goes to D10
Everything in the ETM checks out with Katman's pinouts on FF-Squad as far as the OBD1 side of things go, unfortunately I don't have an '88 - '91 ETM, which arguably would have been the more useful of the two to have.
The big question is are they OEM Denso alternators or crappy Mitsubishi based remans? If it was me I'd be very tempted to swap ALTC and ALTFR.
Thread Starter
H-T White Ops
Joined: Feb 2004
Posts: 17,603
Likes: 22
From: USA
Re: Need OE Wiring Schematics
I'm reluctant to swap the wiring around as the jumpers I have were produced by a company for me and I would like to get the correct conversion harnesses later. So I'm understandably not trying to modify the current ones that I might have to return.
I have the FSM and ETM for the '88-'89 Civic CRX. One problem I've run into is that the HF has different wiring than the Si had from the ECU (so I've been told on other sites by EF fans), so that might be why my jumper is wrong, if that is indeed correct (I'm checking a million times before I say I need a new one made for sure, since I don't need another bad part and more alternators and batteries to go to sacrifice). To complicate things more, some people are saying the ETM might be wrong...
I'll type up the info I have and post it in a few. Might just take me a minute to get it written up.
I have the FSM and ETM for the '88-'89 Civic CRX. One problem I've run into is that the HF has different wiring than the Si had from the ECU (so I've been told on other sites by EF fans), so that might be why my jumper is wrong, if that is indeed correct (I'm checking a million times before I say I need a new one made for sure, since I don't need another bad part and more alternators and batteries to go to sacrifice). To complicate things more, some people are saying the ETM might be wrong...
I'll type up the info I have and post it in a few. Might just take me a minute to get it written up.
Last edited by NOFX; Apr 23, 2013 at 08:46 PM.
Thread Starter
H-T White Ops
Joined: Feb 2004
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From: USA
Re: Need OE Wiring Schematics
Here is the OBD0 ECU wiring (1988 Si and HF).
My jumper sets up like this. The 10-WHT is the VTEC/O2 subharness btw.
Code:
A01 - BRN ----- Fuel Injector Control A02 - RED ----- Fuel Injector Control A03 - LT BLU -- Fuel Injector Control A04 - YEL ----- Fuel Injector Control A05 - BLU/YEL - Electronic Air Control Valve (EACV) Control A06 - YEL/BLK - Power Input A07 - YEL/BLK - Power Input A08 - BLK/YEL - Electronic Air Control Valve (EACV) Control (?) (mine is empty) A09 - BLK ----- Ground A10 - BLK ----- Ground A11 - GRN ----- Purge Cut-Off Solenoid Valve Control A12 - (mine is empty) A13 - RED ----- Electronic Gas Recirculation (EGR) Control Solenoid Valve Control (HF) A14 - GRN/BLK - Fuel Pump Control A15 - GRN/BLK - Fuel Pump Control A16 - BRN/BLK - Ground A17 - BLK/RED - Ground B01 - WHT/GRN - Battery Input B02 - YEL ----- A/C Compressor Clutch Relay Control B03 - BLU ----- Alternator RF Signal (mine is YEL/WHT) B04 - GRN ----- A/C On Input B05 - GRN/BLK - Back Up Light Switch Input (Si) B06 - GRN ----- Clutch Switch Input (HF) B07 - BLU/WHT - Starting Input B08 - WHT ----- Ignition Output Signal B09 - WHT ----- Ignition Output Signal B10 - GRN/RED - Electric Load Detector (ELD) Unit Input B11 - GRN/YEL - Economy Driving Indicator Control (HF) (BLU Dashpot Control Solenoid Valve Control (Si)) B12 - YEL/GRN - A/C On Input B13 - GRN/ORN - Check Engine Warning Light Control B14 - BLU/RED - Radiator Fan and Condenser Fan Control B15 - ORN ----- Crank Sensor Input B16 - WHT ----- Crank Sensor Input B17 - YEL ----- Alternator Output Signal B18 - YEL/RED - Speed Pulser Input B19 - (mine is empty) B20 - BRN ----- Ignition Timing Adjusting Connector Input C01 - BLU/GRN - CYL Sensor Input C02 - ORN/BLU - TDC Sensor Input C03 - RED/YEL - Intake Air Termperature Sensor (TA) Input C04 - RED/BLU - Throttle Angle Sensor Input C05 - RED/WHT - Atmosphere Pressure Sensor (PA) Input C06 - WHT ----- Manifold Absolute Pressure (MAP) Sensor Input C07 - YEL/WHT - Reference Voltage C08 - YEL/RED - Manifold Absolute Pressure (MAP) Sensor Input C09 - BLU/YEL - CYL Sensor Input C10 - WHT/BLU - TDC Sensor Input C11 - RED/WHT - Coolant Temperature Sensor (TW) Input C12 - YEL ----- EGR Valve Lift Sensor Input (HF) C13 - GRN/WHT - Brake Light Switch Input C14 - GRN/WHT - Ground C15 - GRN/WHT - Manifold Absolute Pressure (MAP) Sensor Input C16 - WHT ----- Oxygen Sensor Input
Code:
OBD1 side - OBD0 side A01 - A01 A02 - A02 A03 - A03 A04 - A14 A05 - A05 A06 - EMPTY A07 - B13 A08 - B02 A09 - 10-WHT RED A10 - EMPTY A11 - B08 A12 - A09 A13 - A06 A14 - A04 A15 - 10-WHT BLK A16 - 10-WHT BRN A17 - EMPTY A18 - EMPTY A19 - B12 A20 - EMPTY A21 - B03 A22 - EMPTY A23 - A11 A24 - EMPTY A25 - A10 A26 - A16 & A17 B01 - A07 B02 - EMPTY B03 - B14 B04 - EMPTY B05 - A07 B06 - B07 B07 - C02 B08 - C01 B09 - A07 B10 - EMPTY B11 - EMPTY B12 - EMPTY B13 - B18 B14 - B15 & B16 B15 - C10 B16 - C09 D01 - B01 D02 - 10-WHT WHT D03 - EMPTY D04 - EMPTY D05 - B17 D06 - C04 D07 - C11 D08 - C03 D09 - C06 D10 - C08 D11 - C15 D12 - C13 D13 - 10-WHT BLU D14 - 10-WHT GRN D15 - EMPTY D16 - B10 D17 - EMPTY D18 - C16 D19 - EMPTY D20 - EMPTY D21 - C07 D22 - C14
Thread Starter
H-T White Ops
Joined: Feb 2004
Posts: 17,603
Likes: 22
From: USA
Re: Need OE Wiring Schematics
I just looked through the '93 ETM and the diagrams are pretty similar to what HondaPartsHero already posted. I'd post them anyway but it's a hard copy of the manual.
The wire colors are different though
C is white/yellow and goes to white/yellow (A16)
FR is blue and goes to pink (D9)
IG is black yellow
L is white/blue
ELD is green/red and goes to D10
Everything in the ETM checks out with Katman's pinouts on FF-Squad as far as the OBD1 side of things go, unfortunately I don't have an '88 - '91 ETM, which arguably would have been the more useful of the two to have.
The big question is are they OEM Denso alternators or crappy Mitsubishi based remans? If it was me I'd be very tempted to swap ALTC and ALTFR.
The wire colors are different though
C is white/yellow and goes to white/yellow (A16)
FR is blue and goes to pink (D9)
IG is black yellow
L is white/blue
ELD is green/red and goes to D10
Everything in the ETM checks out with Katman's pinouts on FF-Squad as far as the OBD1 side of things go, unfortunately I don't have an '88 - '91 ETM, which arguably would have been the more useful of the two to have.
The big question is are they OEM Denso alternators or crappy Mitsubishi based remans? If it was me I'd be very tempted to swap ALTC and ALTFR.
I'm running the D16Y8 as a totally stock motor except that it has OBD1 injectors. Everything else on the engine is stock. The first thing that changes is the harness (OBD0 with conversion harnesses). So the alternator and all is the D16Y8 alternator (with OBD0 to OBD1/2 adapter), which came out of my '98 coupe (US) meaning it's the ND alternator.
Thread Starter
H-T White Ops
Joined: Feb 2004
Posts: 17,603
Likes: 22
From: USA
Re: Need OE Wiring Schematics
Got all my wiring figured out. Now just need to confirm or deny that:
(this is how it matches to my alternator)
D05 = FR
A21 = C
I think the wiring is right.
(this is how it matches to my alternator)
D05 = FR
A21 = C
I think the wiring is right.
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