Honda delSol (92-95 CRX) install documentation:
Most of this applies to any 1992-1995 US Civic or Integra
Car:
1993 delSol "S" model
B18B non-VTEC from 1994 Integra LS
Coil on plug from Ford F150
Stock distributor retained only for VR sensors
- Excerpt from the Honda Factory manual: "The CRANK sensor determines timing for fuel injection and ignition of each cylinder and also detects engine RPM. The TDC sensor determines ignition timing at start-up (cranking) and when crank angle is abnormal. The CYL sensor detects the position of No. 1 cylinder for sequential fuel injection to each cylinder."
Stock ECU pinout:
| A1 - INJ1 | EC36-7 |
| A2 - INJ4 | EC36-20 |
| A3 - INJ2 | EC36-19 |
| A4 - VTEC Solenoid (if equipped) | |
| A5 - INJ3 | EC36-8 |
| A6 - O2 Heater Control | (Wideband replaces this) |
| A9 - Idle Air Control | EC36-3 |
| A12 - Cooling Fan | EC36- |
| A13 - Check Engine Light | why not connect a P259 output ? (active if <500 RPM) |
| A15 - A/C Clutch | |
| A16 - Alternator | |
| A17 - Air Bypass Solenoid (GSR Engine) | |
| A20 - Evap Purge Control Solenoid | |
| A21 - Ignition Signal (input to coil) | EC36-34 |
| A23,24 - GND | EC36-26 |
| A25 - Switched +12 | EC36-25 |
| A26 - AGND | EC36-5 |
| B1 - Switched +12 | |
| B2 - AGND | EC36-21 |
| B5 - A/C Pressure Switch | |
| B9 - Constant power | |
| B10 - Vehicle Speed Sensor | |
| B11 - Cyl position sensor + | |
| B12 - Cyl position sensor - | |
| B13 - TDC sensor + | EC36-13 |
| B14 - TDC sensor - | EC36-32 |
| B15 - Crank position sensor + | EC36-27 |
| B16 - Crank position sensor - | EC36-32 |
| D1 - Constant Power | |
| D2 - Brake Switch | |
| D3 - Knock Sensor | Seperate Header on Board |
| D4 - Service Check Connector | |
| D6 - VTEC Pressure Switch | |
| D7 - TX/RX Data Link Connector | |
| D9 - Alternator | |
| D10 - Electrical Load Detector (USA Only) | |
| D11 - TPS Sensor | EC36-1 |
| D13 - CLT (Coolant Temp) | EC36-14 |
| D14 - O2 Sensor signal | Unused with Wideband |
| D15 - Intake Air Temp | EC36-2 |
| D17 - MAP sensor | on-board |
| D19 - +5V for Sensors (MAP) | unused |
| D20 - +5V for Sensors (TPS) | to TPS |
| D21 - GND for Sensors (MAP) | unused |
| D22 - GND for Sensors (TPS, CLT, IAC, O2) | EC36-32 |
The following settings are on a stock B18B with no modifications. The only changes are intake and cat-back exhaust. The Honda wiring harness is used, as is the stock distributor. Only wires added were flyback wire and a wideband sub-harness.
Was the VR sensor polarity verified for falling-edge detection ? If the factory senses rising edge, than the connection must be done reverse.
Here is the current data/settings:
http://www.vems.hu/files/MembersPage/JasonRussell/delsol/delsol_mcd.txt
http://www.vems.hu/files/MembersPage/JasonRussell/delsol/delsol_mct.txt
http://www.vems.hu/files/MembersPage/JasonRussell/delsol/megasquirt200610071847-pretty-good.msq
Datalog from 07oct2006:
http://www.vems.hu/files/MembersPage/JasonRussell/delsol/milton_testdrive.xls