Renault Clio good Cam-Crankshaft waveform

ktl2019 · Post by **ktl2019** » Mon Jul 29, 2024 4:55 pm

Hello
Need a good waveform from cam - crank from a Renault Clio 3 cyl. 898ccm, 66kW, H4B 408 engine, from 2016
Car has error P0011 Camshaft Position - Timing Over-Advanced or System Performance Bank 1

There are no other option without removing the chain to check if timing is OK.
Car runs terible and sometime goes off

wiki38andy · Post by **wiki38andy** » Mon Jul 29, 2024 7:28 pm

Most of times P0011 fault code is set for INT valve timing control solenoid performance outside expected range. So, remove and check VVT solenoid for sludge/deposit and free movement. Remove camshafts cover and check if the INT camshaft is locked in INT dephaser. If this camshaft moves freely back and forth, the dephaser is faulty. I would also flush the engine and replace oil+ filter. Then check oil supply to VVT solenoid and oil pressure. Could you post FFD when P0011 is set? When is the fault code set? At start, on idle or under the load? For crank-cam correlation(timing issue), ECM sets P0016.
It would be very useful in cylinder pressure waveform if you have a proper pressure transducer.

ktl2019 · Post by **ktl2019** » Tue Jul 30, 2024 10:00 am

Tanks for your answere

Have done an oil change and check the VVT solenoid, no sludge/deposit. But only 0,2 Ohm resistor.

But now i have the error 001178 CAMSHAFT PHASE CONTROLLER, camshaft shifter position error. After clearing the error and starting the engine, the error immediately returns.
When I activate the VVT it clicks

But in diagnostic i have solenoid valve programming not performed, hopw can i perform this, do i need the original tester ?

wiki38andy · Post by **wiki38andy** » Tue Jul 30, 2024 2:08 pm

We need the FFD data when P0011 is set. Do you have any PWM signal from ECM to VVT actuator when starting and running at idle? Connect the oscilloscope to solenoid , CKP and CMP . Start the capture just before to crank the engine. Post the pasdata file. Test with VVT actuator disconnected. If fault code still there, remove the head cover and check if INT camshaft it is locked in dephaser and does not move freely.

ktl2019 · Post by **ktl2019** » Tue Jul 30, 2024 3:06 pm

Have not saved the FFD with P0011 and this error does not come anymore.
Tried yesterday to save a caputure with the PWM signal, but yesterday i have on both lines 12V. Tought this is because the error are stored

In your picture, green ist the PVM from the VVT, and this is a waveform from the same engine? Then my timing is not right

wiki38andy · Post by **wiki38andy** » Tue Jul 30, 2024 3:24 pm

Green line is from ignition coil 1 control signal from ECM. It is normal to have 12V on both VVT actuator pins when ECM does not control it. You will have a zero volt line till ECM grounds one pin. Then you will see a 12V square waveform signal.Post the FFD data for the fault code you have now. Scope CKP, CMP and VVT signal from both actuator pins. Start the capture just before to crank the engine. In cylinder pressure waveform.

ktl2019 · Post by **ktl2019** » Tue Jul 30, 2024 3:41 pm

When engine is running in odle, on VVT no PWM signal

But when i do a actuator test i have a PWM signal

When VVT is disconectet also no PWM signal at actuator test

FFD from errror 001178

ktl2019 · Post by **ktl2019** » Tue Jul 30, 2024 4:44 pm

Camshaft adjustment should be mechanically OK, but why does the control unit not send a PWM signal
Connected directly to batterie, see video
https://youtube.com/shorts/Xgeacv3ZiRo?feature=share

And here a waveform for cylinder pressure, have captured the first time this, so i do not have knowledge

Pusch Zylinderdruck 1 Zyl.psdata: 1. cyl; (10.09 MiB) Downloaded 5968 times

Pusch Zylinderdruck 2 Zyl.psdata: 2. cyl; (6.66 MiB) Downloaded 5959 times

With manual compression test i have13 bar, maybe my PDS500G is not right calibrated

wiki38andy · Post by **wiki38andy** » Tue Jul 30, 2024 6:01 pm

ECM does not send PWM signal when cranking and on idle. Just above the 1200-1500rpm and any time under the load. If you start and let the engine on idle, without any rev up, does the code P0011 set?

ktl2019 · Post by **ktl2019** » Tue Jul 30, 2024 6:05 pm

No, the code P0011 does not come anymore
Now always the 001178 comes after few secounds with running eingine

Will measure again tomorrow with load from 1500 rpm

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