TSS Testing

Hello-

2010 Dodge Ram 1500-

Can I test my TSS-(Transmission Shift Solenoid) with my multimeter? If so, how would I go about doing it?


Thanks,
Mr Mike

That'd depend on how the solenoids are wired and controlled. If the solenoids are externally controlled by the PCM, then you've got a couple options. Resistance is one. Not ideal, but it's something.

Current would be better. By disconnecting the PCM connector and powering each solenoid with the ammeter function in your DMM, you can measure the current draw of each solenoid. Use Ohms Law along with the solenoid resistance specification to figure out about how much current each solenoid should draw. Don't leave the solenoids full fielded for longer than needed to do your testing.

You can also listen to the transmission pan while testing the solenoids for a good solid *click* when the solenoid is energized.

If the transmission controller is integral to the transmission, then testing becomes harder. You could use an amp clamp around the transmission power/ground and a scan tool to command the solenoids on while measuring the current draw. Beyond that, you'd have to pull the pan.

Thanks for the info Tyler. I think Ill start with the resistance from PCM to trans solenoid connector as well as voltage. I'm thinking it's got to be in the connection of the connector to the TSS or wiring between PCM and connector because I unplugged it for a little while, then plugged it back in and engine started a few times, then quit. Where the connector connects to the TSS is in a very tight confined space and looks like a lot of dirt, small debris could easily get caught up in there. Ill let you know what I find out