safecracker909

I have had this check engine light on for a while and have no problems with driving it since it came on. I don't want to take it to the dealer and have them reflash the ECM. Any suggestions?

06RAM2500

Pcm Fused Ignition Switch Output Circuit Check
Bus Failure Open Or Shorted Condition
Pci Bus Unable To Communicate With The Scan Tool
Pcm

06RAM2500

1. ACTIVE DTC
Ignition on, engine not running.
With the scan tool, erase DTCs.
Cycle the ignition key on and off several times. Leaving the ignition on for at least 20 seconds.
With the scan tool, read DTCs.
Does the DTC reset?
Yes >> Go To 2
No >> Refer to the INTERMITTENT CONDITION Symptom (Diagnostic Procedure).
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
2. PCM FUSED IGNITION SWITCH OUTPUT CIRCUIT
Turn the ignition off.
Disconnect the C1 PCM harness connector.
CAUTION: Do not probe the PCM harness connectors. Probing the
PCM harness connectors will damage the PCM terminals resulting
in poor terminal to pin connection. Install Miller Special Tool #8815
to perform diagnosis.
With a 12-volt test light connected to ground and with special tool
#8815 installed, probe the (F202), (F1), and (T751) Fused Ignition
Switch Output circuit.
Perform the above check with the Ignition key in the off lock position,
Ignition on, engine not running position, and during cranking.
Wiggle the related wire harness while probing the special tool with the
test light to try to interrupt the circuit.
Does the test light illuminate brightly?
Yes >> Go To 3
No >> Repair the excessive resistance in the (F202), (F1), and (T751) Fused Ignition Switch (Off, Run, Start)
circuit. Inspect the related fuse, if the fuse is open check the circuit for a short to ground.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
3. PCI BUS UNABLE TO COMMUNICATE WITH THE SCAN TOOL
NOTE: Determine which modules this vehicle is equipped with before beginning.
NOTE: When attempting to communicate with any of the modules on this vehicle, the scan tool will display
1 of 2 different communication errors: a NO RESPONSE message or a BUS +/- SIGNALS OPEN MESSAGE.
Ignition on, engine not running.
Use the scan tool, attempt to communicate with the remaining control modules.
Was the scan tool able to communicate with one or more of the Modules?
Yes >> Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No >> Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diagnostic
procedures and for further possible causes.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

06RAM2500

Use the Edge Juice to erase the dtc's, then use it to read them.

safecracker909

Thanks. I will give it a try tonight.