Recently had a computer module replaced (something that allowed the engine and battery to communicate???). Now it randomly won't start and the security light comes on. Starts fine a bunch of times, then won't. Ruled out battery, starter, and alternator. Dignostics check only signals a security breach. Using the same keys and remotes as always.
SOURCE: My 1997 JXI Convertible, 2.5 liter engine, won't start.
is it automatic transmission, try to change from n to d rapitly. while trying to start.
SOURCE: 2000 chrysler grand voyager hard to start
check temp sensor with a scanner and fuel pump pressure some part stores can help with this if all that checks out there is a chance the crank sensor is getting bad and that may be able to be adjusted a little closer that is on top rear of bellhousing you can take it out 10mm and put a tick piece of paper on the end and reinstall
SOURCE: 94 Chrysler Town and Country won't start with key.
has it got an immobiliser / if so there is a fault there. If not an ignition switch itself.
SOURCE: Car ran fine earlier today.
Sound like a starter go to bad or died. You can do a few tests to diagnose a starting system problem without
any tools or measuring equipment. Turn on the headlights and start
cranking. If lights go out, you probably have a poor battery cable
connection that is impeeding the flow of current. Start checking battery
posts and battery cables for tightness and corrosion. A very thin film
of oxide between the terminal and cable clamp can choke off most of
current. Clean battery posts and cable terminals. Make sure all
connections are tight. Also check connections to the starter and
solenoid and engine-to-chassis grounding cables.
If headlights continue to shine brightly and nothing happens, voltage
is probably not reaching the starter. Usual suspects here include a
problem with the park/neutral or ignition circuit switches.
If lights go dim and the cranking action is sluggish, first suspect a low battery.
Starting problems especially in cold weather on a system that worked
well last summer can often be traced to a weak battery. Sub-zero
temperatures can cut a battery's amperage output by more than half.
Check out the battery condition. If the battery checks out okay, look
for a locked or dragging starter, a starter with high internal
resistance, worn brushes or open circuits in starter's windings or
armature. Additional details in this link: how_to_test_a_starter_motor.
Other posibilitie, the ignition switch.
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Digital radio receiver
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Electronic brake control module (EBCM)
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Engine Control Module (ECM) (LY7)
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Instrument panel cluster (IPC)
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HVAC module
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Powertrain control module (PCM) (L26)
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Radio
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Inflatable restraint sensing and diagnostic module (SDM)
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Vehicle control interface module (VCIM)
The GMLAN serial data communications circuit used on this vehicle is in a linear topology. The following modules are connected to the link, in order from DLC to the end of the linear configuration:
The following modules communicate on the GMLAN serial data circuit:
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The transmission control module (TCM), (LY7) 3.6-L
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The engine control module (ECM), (LY7) 3.6-L
I very strongly suggest you don't try to fix this problem !
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