LI07.61-P-067717

BR213, 217, 222 [E63/S63] Check Engine Light on with Misfire DTC's
Topic number
LI07.61-P-067717
Version
4
Function group
07.61 ME fuel injection/ ignition system
Date
05-08-2018
Validity
BR213 E63 Models
BR222 S63 Models
BR217 S63 Models
Reason for change
Specified grounding rework process.
Reason for block
Complaint:
Check engine light illuminated.
Engine may be running rough.
Possible fault codes:
P030022 - Combustion misfiring was detected
P030185 - Combustion misfiring of cylinder 1 was detected.
P030285 - Combustion misfiring of cylinder 2 was detected.
P030385 - Combustion misfiring of cylinder 3 was detected.
P030485 - Combustion misfiring of cylinder 4 was detected.
P030585 - Combustion misfiring of cylinder 5 was detected.
P030685 - Combustion misfiring of cylinder 6 was detected.
P030785 - Combustion misfiring of cylinder 7 was detected.
P030885 - Combustion misfiring of cylinder 8 was detected.
Cause:
Under Investigation
Attachments
File
Description
M177LS2 Intake Manifold Leak Area.jpg
M177LS2 Intake Manifold Leak Area
Remedy:
Perform the Following:
1) Smoke test intake/exhaust and check for leaks. NOTE: The intakes to the turbochargers as well as that from the
turbochargers to the intercoolers must be tested.
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•
•
Repair as necessary.
If no leaks are found, or repair does not remedy complaint proceed to step (2).
2) Check driver's side intake manifold for cracks near the rear (see attachments) of the engine.
•
1.
2.
If damage is found, order a new manifold for the driver's side bank from EPC and OPEN PTSS case with pictures of damage. Include the following:
Production stamp on the damaged manifold (looks like a pair of clocks)
Production sticker
•
If no damage is found, or repair does not remedy complaint proceed to step (3).
3) Inspect ignition coils and verify they are PN: A 177 906 95 00.
•
•
Replace as necessary.
If all coils are PN A 177 906 95 00 swap the coil(s) of the misfiring cylinder(s) with those of cylinder(s) that are
not misfiring and road test the vehicle.
•
If the misfires move with the coils, replace the coils and the spark plugs on original misfiring cylinders
•
If the misfires do not move with coils, proceed to step 4
4) Measure the following grounds. If any reading is above 0.5 ohm, check grounding locations (per attachments)
•
•
•
•
•
•
•
ME Connector F, Pin 1 to ground
ME Connector F, Pin 2 to ground
ME Connecter F, Pin 4 to ground
ME Connector M, Pin 6 to ground
ALL Coils, Pin 1 to ground
Rework grounding locations by removing and cleaning the chassis ground point(s) of any paint or debris.
If rework/replacement does not remedy complaint, proceed to step 5.
5) Perform a Xentry guided high pressure fuel test from cold start and obtain the injector performance data, and initial
quick test with fault freeze
•
•
If the test fails for either bank, replace the high pressure fuel pump for that bank.
If the test passes for both banks, road test the car with ECO start/stop disabled and allow the vehicle to achieve
operating temperature
•
Shut the vehicle down and observe the fuel pressures on the left and right banks at t=0, t=30 minutes, t=60
minutes, and t>120 minutes
•
If at any time the fuel pressure drops below the minimum value and/or a large differential exists between the left and right banks, boroscope the cylinders on the bank with low fuel pressure and determine if one or more of the injectors is leaking.
•
If the fuel pressure remains within acceptable limits proceed to step (6)
•
If one or more of the injectors is leaking, open a PTSS case and upload pictures of the failed
injector(s) taken with the boroscope as well as the information collected via Xentry thus far
•
Replace the failed injector(s)
•
Update the IMA coding for the new injectors in their respective cylinders via Xentry
•
Perform an engine adaptation drive
•
Upload the new injector performance data and quick test to the case
•
Road test the vehicle. If the complaint is no longer present the PTSS case can be closed and
the vehicle released.
6) Open PTSS Case if Above do not Remedy the Complaint
Include in the case:
1) All Data from step (5)
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2) MED1775 Control Unit Log
3) Software update check for ME and Transmission control units
5) Engine Performance Data
6) Injector Performance Data
7) Graphical Readout of Fault Counter from Cold Start
8) Mechanical Compression Test of ALL Cylinders NOTE: A PICOscope compression test is also acceptable if a
mechnical compression tester is not available
9) Leakdown Test of ALL cylinders
10) Boroscope of MISFIRING Cylinder(s)
•
Important: Before performing the boroscope examination, it is imperative that the engine be left to sit until cold
and that the piston is at BDC.
Attachments
File
Description
Ground points LS2_BR213_englx.pdf
M177LS2 BR213 Ground Check
Ground Points LS2_BR222 (002).pdf
M177LS2 BR222 Ground Check
Symptoms
Power generation / Engine management / Engine running / Runs rough/shakes
Power generation / Engine management / Indicator lamp / Engine diagnosis / lit
Control unit/fault code
Control unit
Fault code
N3/10 - Motor electronics
'MED1775' for combustion engine 'M177' (ME)
Fault text
-
Validity
Vehicle
Engine
Transmission
E (213) - 213.088
*
*
E (213) - 213.089
*
*
E (213) - 213.288
*
*
E (213) - 213.289
*
*
S (217) - 217.387
*
*
S (217) - 217.388
*
*
S (217) - 217.477
*
*
S (217) - 217.478
*
*
S (217) - 217.487
*
*
S (217) - 217.488
*
*
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S (222) - 222.187
*
*
S (222) - 222.188
*
*
Attachments
M177LS2 Intake Manifold
Leak Area.jpg:
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HENRAND
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