Ford Transit 2002 Owner's Manual page 1493

Component Tests
Air conditioning clutch relay
1. 1. Check the normally open contact in the unswitched state.
Measure the resistance at the air conditioning clutch relay, between pin 3 and pin
5, component side.
Is a resistance of more than 10,000 Ohm measured?
1. If yes, go to 2.
2. If no, RENEW the air conditioning clutch relay.
2. 2. Check the normally open contact in the switched state.
Use a fused test cable (1 A) to connect pin 1 of the air conditioning clutch relay,
component side, to the battery positive terminal.
Use a test cable to connect pin 2 of the air conditioning clutch relay, component
side, to the battery negative terminal.
Measure the resistance at the air conditioning clutch relay, between pin 3 and pin
5, component side.
Is a resistance of less than 2 Ohm registered?
1. If yes, then the air conditioning clutch relay is OK.
2. If no, RENEW the air conditioning clutch relay.
system.
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