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Old 07-13-2002, 11:33 AM
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pmizell pmizell is offline
Benz Zealot
Join Date: Jun 2001
Location: Houston, Texas
Posts: 838
Well I put red probe into pin 3 on the left fender and black to engine ground and set to duty cycle %. I got a constant 69.9 with engine fully warmed up, at idle and at 2000 rpm's.

Does this point to a possible EHA problem? To test EHA, do I absolutely need the test cable to test it accurately or can I do some preliminary tests with just my digital multimeter?

TIA as always! *edit -- OVP is new


'91 300E, 215K miles
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