Check the No. 5 (30A) fuse in the under-hood sub fuse box. Is the fuse OK? YES – Go to step 2. NO – Check for a short in the wire between the radiator fan relay, radiator fan motor and fan control relay and condenser fan motor or a faulty fan motor. Remove the radiator fan relay from the multi-relay box and test it, refer to the '01 Civic Shop Manual on this CD (see page 22-80). Is the relay OK? YES – Go to step 3. NO – Replace radiator fan relay. Measure the voltage between radiator fan relay 4P socket terminal No. 1 and body ground. RADIATOR FAN RELAY 4P SOCKET Terminal side of male terminals Is there battery voltage? YES – Go to step 4. NO – Repair an open in the wire between the under-hood sub fuse box and the radiator fan relay 4P socket terminal No.1.

Connect a jumper wire between radiator fan relay 4P socket terminals No. 1 and No. 3. RADIATOR FAN RELAY 4P SOCKET Terminal side of male terminals Does the radiator fan run? YES – Go to step 5. NO – Go to step 7. Disconnect the jumper wire, and turn the ignition switch ON (II). Measure the voltage between radiator fan relay 4P socket terminal No. 2 and body ground. RADIATOR FAN RELAY 4P SOCKET Terminal side of male terminals Is there the battery voltage? YES – Repair an open in the wire between the radiator fan relay and the A/C pressure switch. NO – Repair an open in the wire between the under-dash fuse/relay box and the radiator fan relay 4P socket terminal No.2. aaa