W164 no crank, bunch of codes

[Mark73]

Hi, my w164 350cdi 2012 doesn't crank and shows loads codes. The most important are facts, that Motor Electronic doesnt issue start permit. Then ECM terminal 87 undervoltage and internal fault in unit. ESP: No CAN from N80, A1, TC, N93, Engine management and N15/3. Could anyone could give advice please? Pretty please.

 

[Steve@Avantgarde]

Hard to say from the information you have posted but if the car doesnt have drive authorisation, it wont start, so it looks like an EIS failure.

I'd also check the fuse to the inlet port shut off motor, if that blows I think it will take the engine ECU power with it, hence your term 87 fault code.

 

[Mark73]

Hi Steve,
thank you for answer. I checked all fuses and relays including prefuse box and the unit im battery compartment. All seems to be ok. When turning key in EIS it shows terminals to go in / off life as should to.
Also when i checked voltage on canbus distributors, one shows 12V and resistance 60oHm between them. When i disconecting one after another connections nothing changed. I duno whats right as usual voltage on canbus is round 2.5V,but someone said that w164 is 12V.
Thanks for any opinion.
Mark