I stole this page from: B16A Resource Site http://www.geocities.com/motorcity/garage/4311/ | ||
| ECU COMPARISON |
| Molex Plug | '88-91 JDM SiR | '90-3 US Integra | '92-5 JDM SiRII |
|---|---|---|---|
| A1 | #1 injector | #1 injector | |
| A2 | Ground | Ground | |
| A3 | #2 injector | #2 injector | |
| A4 | Ground | Ground | VTEC solenoid |
| A5 | #3 injector | #3 injector | |
| A6 | Ground | Ground | |
| A7 | #4 injector | #4 injector | |
| A8 | VTEC solenoid | none | |
| A9 | none | none | |
| A10 | Pressure regulator cut-off solenoid valve | Pressure regulator cut-off solenoid valve | |
| A11 | EACV | EACV | |
| A12 | Main relay | Main relay | |
| A13 | Main relay | Main relay | |
| A14 | Main relay | Main relay | |
| A15 | Main relay | Main relay | |
| A16 | Ground | Ground | |
| A17 | none | none | Secondary butterfly solenoid (IAB) Only for GS-R B18C swaps - JDM B16A does not have IAB |
| A18 | Ground | Ground | |
| - | - | - | |
| A20 (5G wiring only) | does not exist | does not exist | EVAP (red wire) |
| B1 | Ignition switch | Ignition switch | |
| B2 | none | none | |
| B3 | A/C clutch relay | A/C clutch relay | |
| B4 | none | none | |
| B5 | VTEC pressure switch | none | |
| B6 | Check engine light | Check engine light | |
| B7 | none | none | |
| B8 | A/C switch | A/C swithch | |
| B9 | none | none | |
| B10 | Crank angle sensor | Crank angle sensor | |
| B11 | Traces to fuse box | none | |
| B12 | Crank angle sensor | Crank angle sensor | |
| B13 | Ignition switch | Ignition switch | |
| B14 | Alternator | Alternator | |
| B15 | Igniter | Igniter | |
| B16 | Speed sensor | Speed sensor | |
| B17 | Igniter | Igniter | |
| B18 | none | none | |
| B19 | Knock sensor | P/S oil pressure switch | |
| B20 | Ignition timing adjusting connector | Ignition timing adjusting connector | |
| C1 | Cylinder sensor | Cylinder sensor | |
| C2 | Cylinder sensor | Cylinder sensor | |
| C3 | TDC | TDC | |
| C4 | TDC | TDC | |
| C5 | Intake air temperature sensor (TA) | Intake air temperature sensor (TA) | |
| C6 | TW sensor | TW sensor | |
| C7 | Throttle angle sensor (T/A) | Throttle angle sensor (T/A) | |
| C8 | O2 sensor | none | |
| C9 | P/S oil pressure switch | PA sensor | |
| C10 | Brake switch | Brake switch | |
| C11 | MAP sensor | MAP sensor | |
| C12 | Ignition timing adjusting connector | Ignition timing adjusting connector | |
| C13 | T/A | T/A | |
| C14 | MAP sensor | MAP sensor | |
| C15 | MAP sensor | MAP sensor | |
| C16 | O2 sensor | O2 sensor | |
| - | - | - | |
| D3 (5G wiring only) | does not exist | does not exist | Knock sensor |
| D6 (5G wiring only) | does not exist | does not exist | VTEC pressure |
Furthermore regarding '92+ swaps here are a couple tidbits you might not have known:
The 1992 Civic appears to be the only year where all models (CX, DX, Si, etc) had VTEC already wired into the harness. You lucky people don't have to do anything! For all others ('93+) you have to wire the VTEC solenoid, oil pressure switch, the ground for VTEC, knock sensor and the seconday butterfly solenoid (IAB). In addition if SMOG is a concern then you do have to reqire the EVAP purge solenoid.
For EK swaps I believe that the 98s or 99s have gotten rid of the knock sensor - something which needs to be verified...
