I have an 89 Cherokee pioneer with power door locks only.
For some reason or another, my locks just dont get enough power to turn over. So I investigated today:
With every door connected, only the front locks work, and barely. The back locks dont work at all. AS SOON as I disconnect one lock, my tailgate lock works, and my front locks work very good. It doesn't matter what lock I disconnect to try this. If I disconnect two locks, then my back left locks works very good. Seems like they're not getting enough juice aye?
So I looked in the wiring diagrams in my haynes manual, and there is an always-hot red wire that goes from the battery to the front switches. I tested this, and it got 12+ volts. It seems good. I tested the voltage at a door, and it only got 10 volts. However the interesting thing is, if I test the unlock side of the connector, and it gives me 10 volts, the lock side of the connector gets 2 volts.
I started up the engine and my doors suddenly got 11.21 volts, and, with two locks disconnected, my back left lock worked completley, although slow.
So to recap:
Each connected lock works better if other locks are disconnected.
Each door is getting <10.5 volts when I hit the switch, and the opposite connector is getting <2.5 volts.
The hot wire is getting >12 volts.
The ground at the driver's side, with the batt disconnected, is getting <1 ohm to the neg batt cable.
So my questions, is each door SUPPOSED to get 12 volts each? I'm sure if each of my doors got 12 volts each + the amps that go along, they would work perfectly. Anyone have an idea what's up?
For some reason or another, my locks just dont get enough power to turn over. So I investigated today:
With every door connected, only the front locks work, and barely. The back locks dont work at all. AS SOON as I disconnect one lock, my tailgate lock works, and my front locks work very good. It doesn't matter what lock I disconnect to try this. If I disconnect two locks, then my back left locks works very good. Seems like they're not getting enough juice aye?
So I looked in the wiring diagrams in my haynes manual, and there is an always-hot red wire that goes from the battery to the front switches. I tested this, and it got 12+ volts. It seems good. I tested the voltage at a door, and it only got 10 volts. However the interesting thing is, if I test the unlock side of the connector, and it gives me 10 volts, the lock side of the connector gets 2 volts.
I started up the engine and my doors suddenly got 11.21 volts, and, with two locks disconnected, my back left lock worked completley, although slow.
So to recap:
Each connected lock works better if other locks are disconnected.
Each door is getting <10.5 volts when I hit the switch, and the opposite connector is getting <2.5 volts.
The hot wire is getting >12 volts.
The ground at the driver's side, with the batt disconnected, is getting <1 ohm to the neg batt cable.
So my questions, is each door SUPPOSED to get 12 volts each? I'm sure if each of my doors got 12 volts each + the amps that go along, they would work perfectly. Anyone have an idea what's up?