Pms ecu fault finding

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grober

MB Master
Joined
Jun 22, 2003
Messages
31,674
Location
Perth, Scotland
Car
W204 ESTATE
Found this useful link for fault finding on the Mercedes PMS controlled injection system as fitted to some early C class W202. :thumb: Hope some folks find it useful? http://www.hamsk.ru/murzik/Diagnostic PMS.pdf
there is also this link to some pdf's on the associated wiring.
wiring diagram for mercedes 4 cylinder pms unit ... - JustAnswer
You will have to navigate round the circuit diagrams which have lots of alternate setups built in which makes things very confusing. :doh:
 

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