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7th Generation Honda Civic (2001-2005) 2001, 2002, 2003, 2004, 2005 honda civic coupe, sedan, hatchback si

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2003 Civic LX A/C clutch,Condenser Fan, Rad Fan not working with A/C button ON

7th Generation Honda Civic (2001-2005)

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Old 09-11-2012, 11:56 PM   #1
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Default 2003 Civic LX A/C clutch,Condenser Fan, Rad Fan not working with A/C button ON

Followed Service Manual procedure and jumper Terminal 9 of 12p connector on underdash fuse box to ground and all come on regardless of A/C switch selection. Manual directs me to find the open in the wire from Pressure switch to terminal 9. Ran a temporary wire from switch to fusebox in parallel and does not work. jumper original switch wire near pressure switch to ground and works so wire must be OK.
Does this indicate a failed Multiplex unit? I have not found a schematic to show all connections.
Made a jumper for the "Special Tool" and in Mode 2, no dome light indicators when testing inputs. Am I to assume I need to replace the Multiplex(Fuse PAnel)??
Is there a problem rewiring manually around the multiplex unit? Is this routinely done?

Last edited by zestey; 09-16-2012 at 10:57 PM. Reason: new info
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Old 10-27-2012, 06:49 PM   #2
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how is the freon charge, because if it is low it wouldn't let the system come on
Coupe Life#19

2005 Honda Civic EX SE, 1985 Chevrolet Monte Carlo, 1978 Kawasaki KZ1000, 1996 Dodge 2500 Cummins!, 1997 Dodge Neon ($150 Three years ago)
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