UPDATE: 95.5 S6 Keeps Blowing 5Amp Fuse Near ECU

[Brett Dikeman]

At 8:43 PM -0400 5/15/03, Christopher Gharibo wrote:

>The fuse that is blowing is S102, the 5AMP ECM fuse. It is in position 5 of
>the "Electronic Box" in a red plastic housing.

If it's under a red plastic housing, that's the ECU; usually marked
"MOTOR" in english / german in white.

>It is on pages X1098 and X1105 in Volume 3 of Bentley.  It terminated in "33"
>with a box around it, etc.

Boxes mean "go to current track number..." (ie, the little numbers
that run all along the bottom.)  You'll find a box with the current
track you came from, of course, in the matching spot on the 'other
side'.


>Any help to help me solve this would be EXTREMELY apprecaited.

Sounds like a damaged wiring harness shorting to ground- ECU failures
are practically unheard of.  Do a continuity/resistance check to
ground with the ECU both connected and disconnected.  To get 5A of
current at 13.4v, you're looking at a pretty low resistance- 2.6 ohms
or less; anything more than that won't trip the fuse- you're looking
at a short, no doubt.

Does it blow instantly, or randomly?


Brett
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