## Fan Controls

#### Radiator and Condenser Fans Circuit Troubleshooting C

10-19

Radiator and Condenser Fans High Speed Circuit Troubleshooting

1. Remove the condenser fan relay, 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 2.

NO – Replace the relay.

1. Disconnect radiator fan switch B 2P connector and turn the ignition switch ON (II).

Does the radiator fan stop?

YES – Replace radiator fan switch B and recheck.

NO – Go to step 3.

1. Turn the ignition switch OFF.

1. Remove the radiator fan relay from the multi-relay box.

1. Check for continuity between radiator fan switch B 2P connector terminal No. 1 and body ground.

RADIATOR FAN MOTOR 2P CONNECTOR

Wire side of female terminals

Is there continuity?

YES – Repair a short in the wire between radiator fan relay 4P socket terminal No. 4, radiator fan switch B 2P connector terminal No. 1 and A/C pressure switch.

NO – Go to step 6.

1. Disconnect the radiator fan switch A 2P connector and turn the ignition switch ON (II).

Does the radiator fan stop?

YES – Replace radiator fan switch A.

NO – Repair a short in the wire between radiator fan relay 4P socket terminal No. 4, condenser fan relay 4P socket terminal No. 4.

1. Remove the radiator fan relay from the multi-relay box and condenser fan relay from the under-hood fuse/relay box.

1. Disconnect the radiator fan switch B 2P connector.

1. Turn the ignition switch ON (II).

1. Measure the voltage between radiator fan switch B 2P connector terminal No. 1 and body ground.

RADIATOR FAN SWITCH B 2P CONNECTOR

Wire side of female terminals

Is there the battery voltage?

YES – Go to step 5.

NO – Repair an open in the wire between fan control relay 5P socket terminal No. 1 and radiator fan switch B terminal No. 1.

1. Install the radiator fan relay and condenser fan relay.

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