Case Study: P11A7 00 - Audi Valve Lift System - E888 engines

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DrPeter

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Hello,

This is a Case Study of the possible fault codes that would be associated with the Audi Valve Lift System (AVS) actuators. This is specific to the 4 cylinder engines and would be applicable for other AVS engines.

These were going to be just wiki pages, however, I figured I would share my personal findings of the cause of the fault code P11A7 00 Cam Adjustment Actuator B; Cylinder 2: Elec. Malf. or Open Circuit

Below is what I had found/experienced on this 2013 Allroad and then I have created a quick diagnoses procedure.
- As a bonus, I have listed all the possible fault codes and there respective actuators, along with the Advanced Measuring Value blocks you can use to help the diagnoses.

Code:
Address 01: Engine (DET-CPMA)       Labels:. 06H-907-115-CDN.clb
   Part No SW: 8K5 907 115 F    HW: 8K2 907 115 L
   Component: 2.0l R4/4V TF H09 0008
   Revision: ECH09---
   Coding: 722A0013242600062000
   Shop #: WSC 48853 003 1048576
   ASAM Dataset: EV_ECM20TFS0118K5907115F 001009
   ROD: EV_ECM20TFS0118K5907115F.rod
   VCID: B53CCA7335C362D3105-80E0

1 Fault Found:
7216 - Cam Adjustment Actuator B; Cylinder 2
          P11A7 00 [047] - Elec. Malf. or Open Circuit
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 212
                    Mileage: 90277 km
                    Date: 2020.11.05
                    Time: 13:38:19

                    Engine RPM: 256.00 /min
                    Normed load value: 43.5 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 27 °C
                    Intake air temperature: 19 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 12.298 V
                    Unlearning counter according OBD: 40
                    Mean injection time: 3.804 ms
                    Engine operating condition: Idle
                    Engine operating condition-Test_Program_Channel 87: 5

Readiness: 0000 0000


Here is my experience with the Camshaft Adjustment Actuators (Audi Valve Lift System).

I have a 2013 Audi Allroad with the CPMA E888 engine and Inoticed that there was a fault code P11A7 in the ECM, it has been there for a while and has not caused any real issues.
So I assumed was a failed F369- Camshaft Adjustment Actuator and I ordered a new F369-Camshaft Adjustment Actuator, just in case I needed it.

Since the original part number [06H-103-679-A] drops two times!!, [06H-103-697-B] to the newest as of the creation of this forum post, [06H-103-697-C]. I figured it could be faulty.

I installed the F369 in the proper place, see the picture below, these are not installed in order. and to my surprise I still have the same fault code.



Then I decided to swap the F369 with one of the known good Camshaft Adjustment Actuators, same issue.P11A7 did not clear When I pulled the connector back off for the F369, I noticed the connector was different from the others??

Oh, wow, it is actually missing the end piece of the connector! Wow.. The connector some how broke inside the N369, weird.. I called the local Audi parts department, they have a new connector in stock..???
I picked one up for $6.70 (MSRP). Wonder how many the sell? and it's a new part number! So maybe these connectors have a high failure rate? They are easy to remove, so I doubt they are breaking upon removal.





FYI:
The part number for the connector drops from [8J0-973-202] to [4F0-973-702]. The 'repair' wire you will need is [000-979-034-EA], and for this one wire, the MSRP is $55.60.. umm.. yea.. I had a few repair wires left over in the shop I used.



I cleared the codes and then wife took the vehicle for the rest of the day, I will update if there are any issues/fault codes.


Testing the old actuator with the little meter Andy S. gave me (thanks) I found it was reading about 7.7 ohms.

GZC4bS6.jpg



Below is the proper way to diagnose the Camshaft Adjustment Actuators
Diagnoses Procedures:
- Identify the correct Camshaft Adjustment Actuator location, [Output tests]
- Check wiring, connections for damage, etc. from ECM to actuator
- Check Camshaft Adjustment Actuator internal resistance (7.0 to 8.0 ohms at room temp)
- Inspect Camshaft Adjustment Actuator for mechanical damage
- Swap Camshaft Adjustment Actuator installed location with a known working unit and see if the fault code moves.


The Audi Self-Study Program 922903 - The 2.0L 4V TFSI Engine with AVS is an excellent source of information on the functions of the E888 with the AVS system.

As per the factory repair information here are the Effects of Failure of the Camshaft Adjustment Actuator/ System response to faults:
If one or more control element(s) should fail, the engine control unit first attempts repeatedly to make a switch.
If no adjustment takes place, the cam segments at which no adjustment is possible remain in their positions.
All other cam segments are switched to the large cams.
They then remain in that position all the time the engine is running.
The faulty control elements have a corresponding fault memory entry.
The next time the engine starts another attempt is made to adjust all cam segments.

Fault warning lamp activation
Since the exhaust gas does not deteriorate in the event of a system failure, and driveability problems are unlikely, neither the
electronic throttle warning lamp K132 nor the exhaust gas warning lamp K83 is activated.
The corresponding fault memory entries are made however.
Advanced Measuring Values for Camshaft Adjustment Actuators F366 – F373

[*IDE04629*],374,,AVS operating condition
0 = AVS switching Not enabled. (low oil temperature?)​
1 = "Correction circuit"​
2 = Normal AVS switching operation​
3 = "Short trip / end-of-line test"​
4 = Activation of individual actuators continues with the actuators that gave no errors​
5 = Emergency running - No more activation of individual actuators​
"The measured value indicates the status of the AVS system. If OK, the status is regular operation (2). If there is a defect (electrical fault or switching error), the system remains in emergency running mode and prohibits further switching. The correction circuit (1) and individual switching (4) states only apply for a short time."​


[*IDE04630*],375,,AVS valve stroke position
- False result​
- Correct result​




Possible fault codes for:
"Camshaft Adjustment Actuators F366 – F373"


F366-Control element (1) for camshaft adjustment, Cylinder [1]

F367-Control element (2) for camshaft adjustment, Cylinder [1]

F368-Control element (3) for camshaft adjustment, Cylinder [2]

F369-Control element (4) for camshaft adjustment, Cylinder [2]

F370-Control element (5) for camshaft adjustment, Cylinder [3]

F371-Control element (6) for camshaft adjustment, Cylinder [3]

F372-Control element (7) for camshaft adjustment, Cylinder [4]

F373-Control element (8) for camshaft adjustment, Cylinder [4]



Hope this helps,

drpeter
 
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DrPeter

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Some Additional photos ... Click on the image for a higher res image.


- Everything looks fine, no connection issues, right???



- Upon further inspection we see there is something different with the connectors


- New connector and repair wire installed, ready for the 'butt- connectors and some High Heat Harness Tape .



Time to take a nap...... well at least one of us.. :p
3EGrKXx.jpg



drp
 
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