PCM on 2004 loses its memory settings
10-22-2009 | 07:24 AM
#1
Thread Starter
Burning Brakes
Joined: Nov 2002
Posts: 780
Likes: 32
From: Planet earth
PCM on 2004 loses its memory settings
I am facing a strange issue with PCM on a 996 2004. The car loses all its setiings and memories when the ignition is switched off.
Has anyone come throught this before ?
TIA
Has anyone come throught this before ?
TIA
10-22-2009 | 08:28 AM
#2
Race Car
Joined: Nov 2001
Posts: 4,140
Likes: 1
From: Surrey, UK
Stereo's tend to have two power feeds - one from the battery which allows it to remember stuff when the ignition is off, and one from the ignition so that it switches on / off with the ignition.
The most likely cause is that there is a problem with battery side power. Maybe a dodgy connector on the PCM?
Most aftermarket head units have inline fuses - I assume PCM doesn't, but have you checked one of the main fuses hasn't gone?
The most likely cause is that there is a problem with battery side power. Maybe a dodgy connector on the PCM?
Most aftermarket head units have inline fuses - I assume PCM doesn't, but have you checked one of the main fuses hasn't gone?
