Thread: ECM Problems???
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Old 09-30-2010, 10:37 PM
JoeDodge JoeDodge is offline
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Join Date: Sep 2010
Location: central Texas
Age: 63
Posts: 16
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Vehicle: 1998 quad cab 5.2 soon 2B 5.9
Trim Level: slt
Color: blue
Engine: 1998-2001 360ci (5.9L) Magnum V8 245hp(standard), 250hp(Sport package)
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The problem area is at the transmission wiring connector. It is located on the left side of the transmission, just rear of where the shifter goes inside of the transmission. 7 or 8 wires. You squeeze two tabs on the connector to release. Do not mess with these wires yet. (you may temporarily fix the problem) Unplug the middle connector on the pcm. Pop the black cover off the connector. This exposes the wires that go into the connector. The pins are numbered on the face of the connector. On pin 31, there is an orange wire. This is the wire that feeds 5 volts to the trans. Key off. Using an ohm meter, measure the resistance between this orange wire and ground. Should be greater than 200-500 ohms. Just make sure it is not less than 20 or so ohms. If no meter is available, cut this orange wire 2-4 inches downstream of the connector. Connect every thing up (except the orange wire) and see if the engine runs. If so, touch the two orange wires together. If the engine dies, the 5 volt wire to the trans is shorted. This trans pigtail is available from a Dodge dealer. I can get you the part # if needed.

The "no bus" means that the cluster is not receiving information (rpm, coolant temp, oil pressure, etc.) from the PCM. JoeDodge

Last edited by JoeDodge; 09-30-2010 at 10:39 PM. Reason: more info
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