Originally posted by jgillesp:
....I think the PCM is bad.
Highly unlikely, more likely a dirty(burnt) relay contact or bad coil. Replacement of relay a relatively cheap way to confirm it being the problem.
As you have noted the relay terminal numbering and wiring diag don't match. Like your's my relay doesn't have terminal 6, so I presume 2 is connection to chassis ground. PCM provides ground signal(via terminal 7) for relay when low speed fan operation is required. Presumably this signal triggers a connection between relay coil and terminal 2 via solid state circuitry.
98 Mystique LS v6 atx 163,000km
97 Contour LX v6 atx 163,000km
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