MAF Blowing Fuse S320 CDI - Wiring

GoldorSilver · 17-11-2008, 07:43 PM

Hi,

I have a W220 S320 CDI 51 plate and have got the 7.5A fuse blowing that supplies the 12v to the MAF. Have just replaces the wires direct to the ecu the MAF has been changed and it still pops in about 20 seconds of starting the engine. You know when it has gone as the Coolant warning comes on the dash and it goes into limp mode.

The fuse is in the box left hand side of engine at the rear looking at the engine it is the 6th fuse down and I have no fuse diagram or wiring diagram available. Can anyone tell me what else uses this fuse so I can check for a short and has anyone else had this problem or a simialr one.

Thanks.

PJayUK · 19-11-2008, 12:28 PM

According to my fuse diagram thats for the engine fan. Cant see anything that mentions its for the Mass Airflow... Then again mines an s320 petrol, maybe diesel is different

17-11-2008, 07:43 PM	#1
GoldorSilver New Member Join Date: Nov 2008 Posts: 1	MAF Blowing Fuse S320 CDI - Wiring Hi, I have a W220 S320 CDI 51 plate and have got the 7.5A fuse blowing that supplies the 12v to the MAF. Have just replaces the wires direct to the ecu the MAF has been changed and it still pops in about 20 seconds of starting the engine. You know when it has gone as the Coolant warning comes on the dash and it goes into limp mode. The fuse is in the box left hand side of engine at the rear looking at the engine it is the 6th fuse down and I have no fuse diagram or wiring diagram available. Can anyone tell me what else uses this fuse so I can check for a short and has anyone else had this problem or a simialr one. Thanks.

19-11-2008, 12:28 PM	#2
PJayUK Hardcore MB Enthusiast Join Date: Oct 2008 Location: Surrey, United Kingdom Car: ML320 W163, E320 W210 & Jaguar X300-XJR6 Posts: 497	According to my fuse diagram thats for the engine fan. Cant see anything that mentions its for the Mass Airflow... Then again mines an s320 petrol, maybe diesel is different

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