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Wiring Problem (Ground) in W210?

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#1

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04-28-2007, 01:18 PM

aspett

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Join Date: Jan 2007

Location: Atlanta, GA

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Wiring Problem (Ground) in W210?

I am getting a PO446 (EVAP Emission Control System Vent Circuit Malf) error. Both the Charcoal Canister Shut-off Valve and Purge Valve are only getting ~6.6V through connector with ignition on, but 12V when connected to a chasis ground. Jumping ground doesn't eliminate code. Does anyone know where I might look for the problem (common isolated ground point?), or is this the correct voltage?

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#2

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04-28-2007, 02:38 PM

stevebfl

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I think it may be correct.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician

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#3

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05-03-2007, 10:50 AM

aspett

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I put in a new Charcoal Canister Shut-off valve and all seems to be OK now. Thanks!

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