Hello folk's, I have a new to me 2001 Magnum 335 that will not go into AWD. I have read what seems like the entire net looking for information to help me diagnose the problem and it seems to me my problem is different than others I have read about.
I have discovered I am not sending 12 volts from the AWD switch to energize the hub coils. I have confirmed the hub coils work by disconnecting the 2 prong plugs that go to the coils and applying 12 volts. Grounds are good. I have confirmed that I am missing the 12 volts required to pick the hub coils.
I have disconnected the connector at the AWD switch and I have 12 volts on pin #1 of the connector. I have also confirmed that the hub coils will work if I jumper 12v from pin #1 to the hub coil pins.
Here is where I get lost trying to diagnose why the 12 volts are not being transferred to the hub coils when the AWD switch is activated. I get lost trying to follow the schematic as to where the 12 volts comes from at the switch and how to test the AWD switch to see if it is the problem.
Some addnl info to possibly help figure out where to go next.
- My Magnum does not have a speedo
- My AWD light does not come on when switched to AWD
I have read that the machine will only go into AWD when there is a difference between the front and read wheel speeds, where is this sensed and what signal is sent to the AWD switch to activate the hub coils?
Any other info to help me diagnose this would be greatly appreciated.
I have discovered I am not sending 12 volts from the AWD switch to energize the hub coils. I have confirmed the hub coils work by disconnecting the 2 prong plugs that go to the coils and applying 12 volts. Grounds are good. I have confirmed that I am missing the 12 volts required to pick the hub coils.
I have disconnected the connector at the AWD switch and I have 12 volts on pin #1 of the connector. I have also confirmed that the hub coils will work if I jumper 12v from pin #1 to the hub coil pins.
Here is where I get lost trying to diagnose why the 12 volts are not being transferred to the hub coils when the AWD switch is activated. I get lost trying to follow the schematic as to where the 12 volts comes from at the switch and how to test the AWD switch to see if it is the problem.
Some addnl info to possibly help figure out where to go next.
- My Magnum does not have a speedo
- My AWD light does not come on when switched to AWD
I have read that the machine will only go into AWD when there is a difference between the front and read wheel speeds, where is this sensed and what signal is sent to the AWD switch to activate the hub coils?
Any other info to help me diagnose this would be greatly appreciated.


