"service electrical system"
Thread Starter
Burning Brakes
Joined: Oct 2005
Posts: 791
Likes: 2
From: Stafford Virginia
"service electrical system"
I got the "SERVICE ELECTRICAL SYSTEM" message and it wont reset with the reset button. I have the HP Tuner software and the code doesn't show up on it, so I'm guessing it is coming from the BCM rather than the ECM. I tried disconnecting the battery and letting it sit for an hour or so and once reconnected it immediatley came on with startup. I checked every electrical system connection I could find, including grounds but haven't found anything to cause it. The "Service Charging System" message has come on ocassionaly when I've hit 7,000+ rpm but this is different. The charging system seems to be fine... The only only suspect item is a power inverter hardwired directly to the battery but it has been there for 6 months now and the problem just started a couple of weeks ago.
Any ideas how to go about trouble shooting this and how to turn the message off, short of taking it to the dealer?
Any ideas how to go about trouble shooting this and how to turn the message off, short of taking it to the dealer?
Melting Slicks
Joined: Jun 2006
Posts: 2,690
Likes: 1
From: Northern Calif
there is a code it is in the ECM log. I think it is P6021 the L terminal code. Make sure your elec syst is OK if so this code can be diabled by HPT and you will not get the message again.
Thread Starter
Burning Brakes
Joined: Oct 2005
Posts: 791
Likes: 2
From: Stafford Virginia
I have P6021 unchecked and No MIL Light already. Should it be set to "No Error Reported"?
I do remember getting the L Terminal DTC previously, so your probably right, but I would still like to know what it senses and how to fix it right rather than disabling it...
