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SouthArk370Z · 11-12-2012, 05:53 PM

I _think_ I've figured it out. FSM EC-532 shows ECM terminal 93 (AKA Connector F102-93)* as being "Power Supply for ECM (Backup)" input with battery voltage applied at all times. Run a wire from the input of the disconnect relay contact(s) (or the battery terminal) to that terminal on the ECM and you shouldn't lose any stored data when you de-energize the disconnect relay.

*I'm not sure which of the three connectors going to the ECM is F102. Look for a pink wire in one corner of the connector. When you figure out which connector is which (F101, F102, and M107), please let me know.

References: 2009 FSM EC-148, EC-149, EC-523+, EC-536, EC-543

PS: You may want to de-energize the relay when you park for very long. It might run down the battery.

11-12-2012, 05:53 PM	#10 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	I _think_ I've figured it out. FSM EC-532 shows ECM terminal 93 (AKA Connector F102-93)* as being "Power Supply for ECM (Backup)" input with battery voltage applied at all times. Run a wire from the input of the disconnect relay contact(s) (or the battery terminal) to that terminal on the ECM and you shouldn't lose any stored data when you de-energize the disconnect relay. I'm not sure which of the three connectors going to the ECM is F102. Look for a pink wire in one corner of the connector. When you figure out which connector is which (F101, F102, and M107), please let me know. References: 2009 FSM EC-148, EC-149, EC-523+, EC-536, EC-543 PS: You may want to de-energize the relay when you park for very long. It might run down the battery. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma Last edited by SouthArk370Z; 11-12-2012 at 07:28 PM. Reason: Correct word transposition. Added PS*