Cadillac Repair: 1994 Seville sts overheating, seville sts, coolant temp

Question
My 1994 Seville sts (4.6 L) is overheating.  The fan is not coming on. The fan motor works and the fan relays have power. Fuses are fine, I think it is the temperature  sensor, but can't locate it.  Any help? Prior to this I replaced the alternator with no complications.

Answer
Did you checl ALL the fuses ?. Even the ones in the fuse panel and under the hood ?.

I don't see a temp sensor in the circuit. The coolant fans are controled by the CTS (Coolant temp sensor) and the A/C controls which send a signal to the PCM (power control module ) to energize the realy(s).

I have an electrical schematic for a 94 5.7L Fleetwood, But I do NOT have one for a 4.9L.

Are you POSITIVE that you have battery voltage on the BROWN wire going to the alternator ?.



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