No power going to coil I have changed the ignition switch crank sensor coil I have switched auto shut down relay

Need better info.
when shut off no start batt dead and ignition fuse in bjb replace fuse and still no start or crank no power to cluster cluster dead on commute back ????????? What about ignition fuse ? It was blown an you replaced it or you just replaced it ???? When you shut it off no restart ,the battery was dead ? Test battery , battery cable connections , charging system - is it charging ?
First off your probably unaware of how this vehicle works , This vehicle is powered up by the BCM turning on relays an sending commands over the serial data bus (network) ,do you know what that is ? The ignition switch is a low voltage input to the BCM .
Circuit Description (Key Start)
For ignition switch power modes refer to Body Control System Description and Operation . When the ignition switch is placed in the Start position a discrete signal is supplied to the body control module (BCM) notifying it that the ignition is in the Start position. The BCM then sends a message to the powertrain control module (PCM)/engine control module (ECM) notifying it that CRANK has been requested. At the same time the BCM is supplying 12 volts for the IGN 1 relay closing it and supplying battery positive voltage for the crank relay coil. The PCM/ECM verifies that the transmission is in Park or Neutral. If it is, the PCM/ECM grounds the control circuit of the crank relay. When this occurs battery positive voltage is supplied through the switch side of the crank relay to the S terminal of the starter solenoid.

Check the Ignition 1 relay -
Relay Controlled Power Mode
The body control module (BCM) uses the discrete ignition switch inputs ignition 1, ignition 3 and crank to distinguish the correct power mode. Once the BCM has determined the power mode selected by the vehicle operator it will energize the Ignition relay, Run relay and retained accessory power (RAP) relay, depending on which power mode is selected.
Ignition 1 Relay
The relay uses a Hot At All Times B+ power source derived from the underhood electrical center. The ignition 1 relay supplies a power signal to the following circuits when the Run or Crank power mode is selected:
• AC clutch relay
• ABS STG angle sensor
• Antilock brake system (ABS) yaw sensor
• Auxiliary power drop connector
• Crank relay
• Cruse control switch
• Electronic brake control module (EBCM)
• Engine control module (ECM)
• HVAC module
• Ignition control module (ICM)
• Instrument panel cluster (IPC)
• Sensing and diagnostic module (SDM)
• Transmission solenoid circuit

What make , model an year vehicle ? Could be a relay problem , power hold relay for ford , ignition 1 relay for GM vehicles or ASD - auto shut down relay for jeep , dodge , Chrysler vehicles . Asian vehicles have them too , Honda - main relay powers fuel injectors , coils etc.... Do you know how to do basic automotive electrical testing ? Check for voltage ? You would need to look at a wiring diagram for your vehicle , see which wire powers the coil an injectors etc...test for B+ voltage ! Videos on you tube showing how to test ignition , fuel etc..

What make , model an year vehicle do you have ?

Have you figured out if you are loosing spark or fuel pressure when the engine quits ? Could be a relay, coil, fuel pump, or various other electrical components.

It may be the ASD relay (auto shut down relay). They are not expensive, and I would replace it and see if this is the issue. It seems you have covered everything else as far as part replacement, at this point, the ASD relay is most likely the issue. Unless there are DTC's stored in the PCM?

Have you pulled codes to see if anything comes up? check to see if you have primary voltage to coil. engine cranking, if no power to coil. check ignition switch or fuse they may be bad. if all else fails, or there is spark or power to coils. this site will show how to test ignition: www.ehow.com/how_4509361_troubleshoot-ignition-system-dodge-caravan.html good-luck!

Do you hear the fuel pump when you cycle the key?
If not, then Check the ASD - auto shut down relay ,under hood, drivers side,distribution box
Only got computer,crank sensor,and coil
The distributor hall effect sensor, is for the injector timing,do not move the dist.,

Is the ignition switch and neutral switch okey

If you got no wiring diagrams or experience with a volt meter,your in a tough spot.

Sounds like an AUTOMATIC SHUTDOWN (ASD) RELAY problem. Fairly common on the Caravan.
Heres a brief overview of the ASD.
The Powertrain Control Module (PCM) operates the Auto Shutdown (ASD) relay by switching the ground path on and off.
The ASD relay supplies battery voltage to the fuel injectors, electronic ignition coil and the heating elements in the oxygen sensors.
The PCM controls the relay by switching the ground path for the solenoid side of the relay on and off. The PCM turns the ground path off when the ignition switch is in the Off position unless the 02 Heater Monitor test is being run. Refer to On-Board Diagnostics. When the ignition switch is in the On or Crank position, the PCM monitors the crankshaft position sensor and camshaft position sensor signals to determine engine speed and ignition timing (coil dwell). If the PCM does not receive the crankshaft position sensor and camshaft position sensor signals when the ignition switch is in the Run position, it will de-energize the ASD relay.
The ASD relay is located in the Power Distribution Center (PDC). The PDC is located on the driver's side inner fender well Power Distribution Center . A label on the underside of the PDC cover identifies the relays and fuses in the PDC
Check for good ground.
Good luck...i hope this helps, please rate me a fixya.

THE POWER TO THE IGNITION COIL COMES FROM THE AUTO SHUT DOWN RELAY..THE AUTO SHUT DOWN RELAY IS GROUNDED BY THE POWERTRAIN CONTROLLER WHEN IT SEES CAM AND CRANK SIGNALS..WHEN CRANKING..HOLD YOUR TEST LIGHT ON DG/OR WIRE AT COIL AND HAVE SOMEONE JUST TURN KEY ON..YOU SHOULD GET POWER FOR 2-3 SECONDS..IF IT DOES,THE CIRCUIT TO THE COIL IS OK..CHECK ALL FUSES..FUSE 9 IN JUNCTION BLOCK INSIDE TRUCK,FUSE 3 IN UNDERHOOD FUSE/RELAY CENTER..CHECK FOR ANY FAULT CODES IN PCM..YOU MOST LIKELY HAVE A FAULTY CAM OR CRANK SENSOR..CAN BE MONITORED WHILE CRANKING ENGINE WITH A SCAN TOOL HOOKED UP..LET ME KNOW WHAT YOU FIND

Did you check the oil. It has a low oil shut down feature. Below 1 quart low, ignition is disabled.