Battery Backup question

[Scott@FP]

Key off battery power to an OEM ECU is traditionally used for volatile memory functionality, been in place since EFI day 1. If the ECU doesn't utilize volatile memory or some other key off function like alarms etc. there's no need for it.

Traditional volatile memory items- fault codes, learned values, OBD self test values, etc. There's a LOT of learned/adaptive stuff going on in OEM ECU's even from the late 80's/early 90's.

[Patrick]

I did a little more research and asked around about the Motec. The battery backup pin is currently unused, as you said.

This is not entirely correct. The pin is connected, but there is no software support.

[TylerC]

I did a little more research and asked around about the Motec. The battery backup pin is currently unused, as you said.

This is not entirely correct. The pin is connected, but there is no software support.

Yep, that's what I meant.