PGM-FI Warning Light On, Red LED Does Not Flash

Turn ignition on. One at a time, disconnect the 3-wire connectors at MAP sensor, throttle angle sensor and EGR position sensor. If LED remains lit, go to next step. If LED goes out, replace the sensor which caused LED to go out when unplugged.
Reconnect all connectors. Disconnect the 3-wire connector at ignition timing adjuster and then atmospheric PA sensor. If LED flashes code 13 (and/or 18 on Coupe) when sensor is disconnected, replace faulty sensor. If code for disconnected sensor was not flashed, go to next step.
Turn ignition off. Reconnect connector(s). Connect system checker harness between ECU and ECU harness. Disconnect "C" connector from ECU, not main harness. Check for continuity between ground and terminals C13 and C15. If continuity does not exist, go to next step. If continuity exists, repair short to ground in Red/White wire from terminal C15 to MAP sensor or in Yellow/White wire from terminal C13 to PA sensor, ignition timing adjuster and EGR position sensor.
Reconnect "C" connector. Disconnect "B" connector from ECU only, not main harness. Turn ignition on. If LED is lit, repair short to ground in Blue wire between ECU and combination meter. If LED is not lit, one at a time, connect terminal B6 to terminal A16 and then to terminal A18. If LED illuminates, go to next step. If not, repair open in Brown/Black A18 wire and/or Brown/White A16 wire between ECU and ground.
Measure voltage between terminal A15 (pos.) and A18 (neg.). If battery voltage is not present, repair open Yellow/Black A15 wire between ECU and main relay or repair main relay or relay wiring. If Battery voltage is present, substitute a known good ECU. If condition is rectified, replace original ECU.