I have a 1989 Cherokee. The air conditioner clutch stopped turning on and the electric fan won't turn on either. The fan works with 12 v directly to it. IT has worked in the past as well. It just stopped working right after I installed a new higher amp alternator.
Relay readouts are as follows
AC OFF AC ON
30 - 7.3mV 30 - 9.5mV
85 - 14.1 V 85 - 14.0 V
86 - 60mv 86 - 60mV
87 - 39.9mV 87 - 39.3mV
87a - 105mV 87a - 0.1mV
This is all stock wiring and parts. I've no clue why 30 isn't getting 14 volts, and why 87a is the only one changing in volts. If there was a fuse blown on the wire to plug 30 I wouldn't expect to get ANY volts.
The relay itself works and I've tried it with other 5 pin relays that also work.
Could the clutch not be engagine because the compressor is low on oil? The orange wire going to the Air Conditioner isn't getting 12 volts of power either.n
Relay readouts are as follows
AC OFF AC ON
30 - 7.3mV 30 - 9.5mV
85 - 14.1 V 85 - 14.0 V
86 - 60mv 86 - 60mV
87 - 39.9mV 87 - 39.3mV
87a - 105mV 87a - 0.1mV
This is all stock wiring and parts. I've no clue why 30 isn't getting 14 volts, and why 87a is the only one changing in volts. If there was a fuse blown on the wire to plug 30 I wouldn't expect to get ANY volts.
The relay itself works and I've tried it with other 5 pin relays that also work.
Could the clutch not be engagine because the compressor is low on oil? The orange wire going to the Air Conditioner isn't getting 12 volts of power either.n