Peugeot 306 - help please

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Tue 23 Feb 2021 18:33
Peugeot 306 - help please - tolgahan
hello my 1998 306 1.6i Xs vehicle My Mp5.2 ecu vehicle is not working, there is no spark in the vehicle, no fuel, no injection, the electricity to the injection must be plus and minus but there are two pluses, I would love if you help them both
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Tue 23 Feb 2021 19:41
Peugeot 306 - help please - elekie&a/c doctor
You need to check the fuel injection control relay . It’s usually (but not always) fitted to the back of the plastic ecu box . Very often black or brown plastic relay with a connector of around 12 pins . You need to check power and earth supply voltages .
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Tue 23 Feb 2021 20:07
Peugeot 306 - help please - tolgahan
Hello, I forgot which pin of the relay, but when I touch the negative green thin wire, it gives the pump positive and electricity comes to the three wires of the coil.
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Tue 23 Feb 2021 20:52
Peugeot 306 - help please - elekie&a/c doctor
Green wires on Peugeot are usually an earth circuit . I would check the earth points on the engine. Should be a junction point on top of the gearbox.
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Tue 23 Feb 2021 20:54
Peugeot 306 - help please - tolgahan
Thanks, let me check during the day and write the results
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Tue 23 Feb 2021 23:20
Peugeot 306 - help please - Andrew-T

And check the connection to the fuel pump under the rear seat.

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Wed 3 Mar 2021 06:35
Peugeot 306 - help please - tolgahan
necessary Bosch Mp5.2 33 0 261 204 628ecu wiring diagram
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Sun 28 Mar 2021 14:09
Peugeot 306 - help please - tolgahan
still not working
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Wed 31 Mar 2021 17:10
Peugeot 306 - help please - tolgahan

Engine cranks but dont start.

I have found a problem with the double relay.
The side of the relay that starts the fuelpump dont get a negative signal. (pin 10 if i remember correctly).

I have read so many threads on different forums but cant find what causing this problem.

I read somewhere that the negative signal should come from the ecu. I have found a cable from pin 10 in the double relay that goes to the ecu connection pin 3. Beeped it with

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Wed 31 Mar 2021 19:20
Peugeot 306 - help please - elekie&a/c doctor
If you ground pin 10 of the relay , does the engine start.? I suspect probably not . The engine ecu needs to see an engine speed signal from the tdc/flywheel sensor before it will energise the relay.
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Wed 31 Mar 2021 22:28
Peugeot 306 - help please - tolgahan
tdc There is no positive in the sensor so probably the ecu does not trigger
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Wed 31 Mar 2021 22:30
Peugeot 306 - help please - tolgahan
I do not know what pin the positive corresponds to when I look at it there is only a minus to tdc
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Wed 31 Mar 2021 23:08
Peugeot 306 - help please - elekie&a/c doctor
There is no positive voltage at the sensor . It’s a magnetic inductive device that generates about 1.5 -2volts a/c when the flywheel spins across the pick up face .
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Sat 3 Apr 2021 10:53
Peugeot 306 - help please - tolgahan
Idle has 374 ohms now so I bought it I didn't plug it, the newer one has idle 381 ohms
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Sun 4 Apr 2021 17:51
Peugeot 306 - help please - tolgahan

youtu.be/aWi5iQUn6vM

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Tue 6 Apr 2021 00:46
Peugeot 306 - help please - tolgahan
At 22 c the ecu should be positive, at 35 c the pin should be positive or negative ????
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