I'm attaching a very (extremely) generalized picture, which shows where you should look for the A/C condenser fan switch on a 91-92 240. The switch is located in a small offshoot pipe from the high side A/C pipe which travels along the right side frame rail from the condenser, backwards toward the firewall, where the A/C pipe makes a turn up, then goes into the firewall. The switch is very easy to find, because it's the only electrical part attached to this pipe, and it's on the forward 1/2 of the frame rail. The arrow points to the general location, although the switch is out of sight because it's lower down.

A small jumper wire can be fashioned between the two terminals of the fan switch harness. The result of this will be that the condenser fan runs any time the snowflake (A/C) switch is set to "On", inside the passenger compartment. I used to make a 1-2" jumper wire with spade terminals, and plug it into the existing fan switch harness, then shrink wrap the harness and put it out of the way, leaving the switch in place with no connections on it.

The condenser fan is easily tested by either jumping the harness for the A/C fan switch (described above) and turning on the A/C. It will run even if the compressor doesn't run, or if the system is low on charge. Another way is to run 12v directly to the fan. Obviously this requires removing the grille to access the fan harness.


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Chris Herbst
Scottsdale, AZ

1992 940 150k
2005 S80 30k