When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Friends, need collective mind support.
A/C is not engaging after series of work carried out on the vehicle.
Checked circuits - power is coming to relay (34), relay is ok, but no contact between exit from relay and A/C clutch connector.
But wire is going out of fuse box into the factory wiring/harness, and going out of the harness with short tail - all without signs of damage.
I don't believe that damage is inside factory harness, otherwise it would be many more wires damaged... also, it is isolated and looking solid/untouched.
Questions:
1. Is there possibly a connector I missed - in wiring between fusebox / relay and a/c connector ?
2. If not - is there any way to find wire damage without need to unwire the whole factory harness ?
PS: Really thinking about dropping another wire [from relay to a/c connector] in parallel instead of fixing this one - should work, if wire just broken.
But if there is melt/shortage inside the harness, parallel wire can be an issue...
How do you know the relay is OK ?…swap it with another like the horn relay…what if you jumped pins 30 and 87 which is the load side of the relay ??…30 is hot with key in ON or START and is the terminal closest to the engine and is closest to windshield…87 is caddy corner…fender side and front of engine…if jumping does not engage the fan clutch either no power to terminal A at the compressor itself or wiring at the fuse box terminal B9 on the C3 connector which goes down to the compressor...what work was done ??..what year is the car ??…that always helps !!
year 2002.
work done - complete re-painting + engine pillows swap.
Both theoretically should not impact harness which is rather short.
As for testing : relay was replaced with other of same type (same effect) and short-jumping was done when checking.
More, with relay inserted, when a/c is engaged relay clicks and +12 V appearing at 87... and nothing at a/c connector / green wire that side...
Something very strange.
Wire inside harness was damaged. No chance of bending, no sign of shortage. Just wire fall apart inside harness aprox 5 cm from the exit from harness...
A/C not getting +12 / wire break
