Free Downloadable Manual AC Heater Systems Honda Civic Si 1991
Free Downloadable Manual AC Heater Systems Honda Civic Si 1991
If compressor clutch does not engage, repair open in Yellow wire between clutch relay and ECU. If compressor clutch engages, substitute a known good ECU, and recheck. If compressor clutch engages, replace original ECU. CONDENSER OR RADIATOR FAN INOPERATIVE 1. Turn ignition, blower and A/C switches on. If both fans do not work, go to step 4). If either fan comes on, turn ignition off. Inspect fuses No. 32 and 15. Replace as necessary.
If fuses are okay, inspect relay of inoperative fan. Replace as necessary. 2. If relay is okay, disconnect fan motor connector. Turn ignition on. Measure voltage between Blue/Black or Black/Yellow wire terminal (positive side) and Black or Blue wire terminal (negative side). If battery voltage exists, replace fan motor. Inspect fuse No. 15. Replace as necessary. If fuse is okay, turn ignition off. Disconnect dual pressure switch. Connect No. 1 Blue/Red wire to ground. See Fig. 2 . If both fans do not come on, repair open in Blue/Red wire between diode and dual pressure switch. If both fans come on, connect a jumper wire between No. 2 Blue/Red and No. 3 Blue/Red wire terminals of thermostat switch connector. If both fans come on, replace thermostat switch. If both fans do not come on, reconnect thermostat switch connector.
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