W210 no crank no start

[electop]

hello I have a mercedes e270 W210 no crank no start engine ecu: bosch cr2.14 with EZS It only starts when I put direct voltage to the starter
diagnosis does not fail
We check with the diagnostic machine in EZS and ECU the signals 15, 15r, 50 and are fine

The problem is that K40 does not get the correct voltage to activate the starter
That voltage is from ECU

need help please

[electop]

hello I have a mercedes e270 W210 no crank no start engine ecu: bosch cr2.14 with EZS It only starts when I put direct voltage to the starter
diagnosis does not fail
We check with the diagnostic machine in EZS and ECU the signals 15, 15r, 50 and are fine

The problem is that K40 does not get the correct voltage to activate the starter
That voltage is from ECU

need help please
GEARBOX: MANUAL

[gwiazdamb]

hello I have a mercedes e270 W210 no crank no start engine ecu: bosch cr2.14 with EZS It only starts when I put direct voltage to the starter
diagnosis does not fail
We check with the diagnostic machine in EZS and ECU the signals 15, 15r, 50 and are fine

The problem is that K40 does not get the correct voltage to activate the starter
That voltage is from ECU

need help please


The relay is protected by a fuse have you checked? because you don't say anything about it

[electop]

Yes
I have checked the fuses of the k40 are fine, they all get battery voltage
black relay of starter fine

[gwiazdamb]

Which year ?

[electop]

Which year ?
Year is 1998

[gwiazdamb]

Year is 1998

Fuse/relay box the vehicle P 25 check out cold February
A 11 ecu engine
P23 Fuse/relay box 2 inside the vehicle

[electop]

Caja de fusibles/relés del vehículo P 25 echa un vistazo a frío febrero
A 11 ecu motor
P23 Caja de fusibles/relés 2 dentro del vehículo

Thank you for the valuable information
I have checked the two wires that go from the ECU to the P25 fuse/relay box.
I1 and ground: 12v
I2 and ground: 12v
I1 and I2: 7v


when the key in the EZS is in the start position, nothing changes in the voltage of those 2 wires
the starter relay K111 needs 12v from those 2 wires (I1,I2) to turn the starter

[gwiazdamb]

No
There should be 12v and gnd to control the relay

[electop]

No
There should be 12v and gnd to control the relay

I meant to say that, sorry
the problem is that there is 12v in the two cables, I don't know why

thank you

[gwiazdamb]

I meant to say that, sorry
the problem is that there is 12v in the two cables, I don't know why

thank you

It's supposed to be like this. During startup, when 50 is running, one mass will appear sent from ecu
The relay will be activated and therefore the starter motor

Pull out the relay and you will find out where the power is and where the control is

[electop]

It's supposed to be like this. During startup, when 50 is running, one mass will appear sent from ecu
The relay will be activated and therefore the starter motor
I have checked with a multimeter to see if there is a mass when the key is in position 50 but there is not.
Is there any other way to check it?

[gwiazdamb]

I have checked with a multimeter to see if there is a mass when the key is in position 50 but there is not.
Is there any other way to check it?


Make ECU virgin. Do synchronization of ECU and EZS using SD
If the fault persists, you have a faulty ECU

[electop]

Make ECU virgin. Do synchronization of ECU and EZS using SD
If the fault persists, you have a faulty ECU
Is there any way to resynchronize it without SD, I don't have it.
THANK YOU.

[gwiazdamb]

Is there any way to resynchronize it without SD, I don't have it.
THANK YOU.


In the forum, we use the THANK button for your help

[gwiazdamb]

Is there any way to resynchronize it without SD, I don't have it.
THANK YOU.

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