S2000 L4-2.2L (2004)
10. Check for continuity between PGM-FI main relay 7P connector terminal No. 1 and ECM connector terminal A15.
Is there continuity?
YES - Go to step 11.
NO - Repair open in the wire between the PGM-FI main relay and the ECM (A15).
11. Reconnect ECM connector A (32P) and the PGM-FI main relay 7P connector.
12. Turn the ignition switch ON (II), and measure voltage between ECM connector terminals B1 and B20, and between B9 and B20 individually.
Is there battery voltage?
YES - Go to step13.
NO - Check for an open in the wires between the PGM-FI main relay and the ECM (B1, B9). If the wires are OK, replace the PGM-FI main relay.
13. Turn the ignition switch OFF, then ON (II) again, and measure voltage between ECM connector terminals A15 and B2 within the first 2 seconds
after the ignition switch is turned ON (II).
Is there 1.0 V or less?
YES - The PGM-FI main relay may be faulty; go to STEP 14.
NO - Substitute a known-good ECM and recheck. If the voltage is now normal, replace the original ECM.
14. Remove the PGM-FI main relay.
