No crank No start Dodge Durango
If you turn the key on a Dodge Durango and get a No crank No start situation where it won’t start or crank, most people head right for the battery. But there can be other issues. Here’s how power flows in this vehicle.
The system uses an engine starter motor relay located in the power distribution center (PDC). Power flows to the relay contacts from fuse 16. Power flows to the relay control coil from fuse “E” to the ignition switch and then to the control coil on the starter relay. The control side of the coil gets its ground from the neutral switch (manual transmission) or the transmission range selector (automatic transmission).
To diagnose the system, remove the relay and jumper across terminals 30 and 87 in the relay socket. If the starter cranks, you know the starter is good. Next, check for power on terminal 86 in the socket while turning the key to START. That confirms you’ve got good power flowing from the fuse and through the ignition switch. Finally, check for good ground on terminal 85 in the relay socket. If you don’t have good ground, check the neutral switch or transmission range selector. You’re not going anywhere if you don’t have good ground on those switches
© 2012 Rick MuscoplatPosted on by Rick Muscoplat