KNOCKING/PINGING-ACCELERATION/CRUISE [SKYACTIV-X]

id0103hf890000

Troubleshooting item

Knocking/Pinging-acceleration/cruise
Description
•  Abnormal combustion occurs under the condition such as the temperature in the combustion chamber is too high resulting in abnormal noise.
•  Knocking sound occurs from the engine compartment during acceleration.
Possible cause
•  Poor fuel quality
―  Fuel RON is not specified
―  Excessive cleaning agents added in fuel
•  Air suction in intake-air system
―  MAP sensor signal
•  Cylinder pressure sensor connector malfunction
•  The following information for calculating ignition timing is incorrect:
―  MAF sensor signal
―  IAT sensor No.1 (integrated in MAF sensor) signal
―  IAT sensor No.2 (integrated in MAP sensor) signal
―  ECT sensor No.1 signal
―  Intake electric variable valve timing motor/driver
―  Exhaust electric variable valve timing motor/driver
―  Swirl control valve position sensor signal
―  EGR valve position sensor signal
―  EGR pressure sensor signal
―  Cylinder pressure sensor signal
•  Intake electric variable valve timing actuator malfunction
•  Exhaust electric variable valve timing actuator malfunction
•  Cylinder pressure sensor information is incorrect
•  Combustion temperature is high
―  Cooling system malfunction
―  Carbon accumulation
―  Use of non-genuine spark plug
Warning
•  The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
―  Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
―  Highly pressurized fuel may spray out if the fuel line is cut. Due to the following dangers occurring with a fuel spray, always complete the “Fuel Line Safety Procedure” to prevent the fuel from spraying.
•  Fuel may cause irritation if it comes in contact with skin and eyes.
•  If fuel ignites and causes a fire, it may lead to serious injury or death, and damage to property and facilities.
―  Fuel is highly flammable and dangerous. Fuel line spills and leakage can cause serious injury or death, and damage to equipment. Always refer to the “Quick Release Connector Removal/Installation (fuel system)” before performing the fuel hose installation, and execute the “Fuel Leakage Inspection” after installation.
Caution
•  Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
System wiring diagram
•  Not applicable
Connector diagram
•  Not applicable

Diagnostic Procedure

Step

Inspection

Results

Action
1
VERIFY PCM DTC
•  Perform the DTC inspection for the PCM.
•  Are any DTCs displayed?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-X)].)
No
Go to the next step.
2
REPLACE FUEL
•  Drain the remaining fuel in the fuel tank and add the specified fuel.
•  Leave idling for approx. 15 min to refill the hose with fuel.
•  Does the symptom disappear?
Yes
Symptom troubleshooting completed.
(If customer has used fuel additive, give them advice not to use it)
No
Go to the next step.
3
VERIFY IF MALFUNCTION CAUSE IS OVERHEATING
Warning
•  While performing this step, always operate the vehicle in a safe and lawful manner.
•  When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.
•  Access the ECT PID using the M-MDS.
•  Is the ECT PID value less than 116 °C {241 °F} during driving?
Yes
Go to the next step.
No
The cause of this concern could be from the cooling system overheating.
•  Perform the symptom troubleshooting “COOLING SYSTEM CONCERNS-OVERHEATING”.
4
INSPECT CYLINDER PRESSURE SENSOR CONNECTOR FOR MALFUNCTION
•  Inspect the applicable connector and terminal.
•  Are the connector and terminal normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
5
VERIFY SPARK PLUG CONDITION
•  Remove all spark plugs.
•  Inspect the spark plug.
•  Is there any malfunction?
Yes
Replace the spark plug and perform the repair completion verification.
(See SPARK PLUG REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
No
Go to the next step.
6
INSPECT INTAKE AIR SYSTEM FOR AIR SUCTION
•  Verify if there is air suction into the intake air system (such as between MAF sensor and intake valve, evaporative hose, ventilation hose).
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning location and perform the repair completion verification.
No
Go to the next step.
7
INSPECT MAP SENSOR
•  Access the following PIDs using the M-MDS:
―  MAP
―  BARO
•  Measure the intake manifold vacuum when idling (no load).
•  Does the difference between PIDs BARO and MAP nearly match the intake manifold vacuum value?
Yes
Go to the next step.
No
Replace the MAP sensor/IAT sensor No.2 and perform the repair completion verification.
(See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR No.2 REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
8
INSPECT MAF SENSOR FOR MALFUNCTION
•  Inspect the applicable part.
•  Is the part normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
(See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
9
INSPECT IAT SENSOR No.1 FOR MALFUNCTION
•  Inspect the applicable part.
•  Is the part normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
(See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
10
INSPECT IAT SENSOR No.2 FOR MALFUNCTION
•  Inspect the applicable part.
•  Is the part normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
(See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR No.2 REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
11
INSPECT ECT SENSOR No.1 FOR MALFUNCTION
•  Inspect the applicable part.
•  Is the part normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
12
INSPECT SWIRL CONTROL VALVE POSITION SENSOR FOR MALFUNCTION
•  Inspect the applicable part.
•  Is the part normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
(See INTAKE MANIFOLD REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
Note
•  The swirl control valve actuator cannot be removed as a single unit. When replacing the swirl control valve actuator, replace it together with the intake manifold as a single unit.
13
INSPECT EGR VALVE POSITION SENSOR FOR MALFUNCTION
•  Inspect the applicable part.
•  Is the part normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
(See EGR VALVE POSITION SENSOR REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
14
INSPECT EGR PRESSURE SENSOR FOR MALFUNCTION
•  Inspect the applicable part.
•  Is the part normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
(See EGR PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
15
INSPECT CYLINDER PRESSURE SENSOR FOR MALFUNCTION
•  Inspect the applicable part.
•  Is the part normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
(See CYLINDER PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-X 2.0])
16
INSPECT INTAKE ELECTRIC VARIABLE VALVE TIMING MOTOR/DRIVER OR EXHAUST ELECTRIC VARIABLE VALVE TIMING MOTOR/DRIVER FOR MALFUNCTION
•  Inspect the applicable part.
•  Is the part normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
(See ELECTRIC VARIABLE VALVE TIMING MOTOR/DRIVER REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
17
INSPECT INTAKE ELECTRIC VARIABLE VALVE TIMING ACTUATOR OR EXHAUST ELECTRIC VARIABLE VALVE TIMING ACTUATOR FOR MALFUNCTION
•  Inspect the applicable part.
•  Is the part normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
(See ELECTRIC VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
18
REMOVE THE ACCUMULATED MATTER IN THE CYLINDER HEAD
•  Remove the accumulated matter in the cylinder head using one of the following methods.
―  Carbon remover
―  Overhauling
•  Has the malfunction symptom been eliminated?
Yes
Go to the next step.
No
Injector driver malfunction.
•  Replace the PCM.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
Go to the next step.
Repair completion verification 1
VERIFY THAT VEHICLE IS REPAIRED
•  Install/connect the part removed/disconnected during the troubleshooting procedure.
•  Has the malfunction symptom been eliminated?
Yes
Complete the symptom troubleshooting. (Explain contents of repair to customer)
No
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)
•  If the CAN communication is normal, perform the diagnosis from Step 1.
―  If the malfunction recurs, go to the next step.
Repair completion verification 2
VERIFY IF MALFUNCTION IS CAUSED BY NOT PERFORMING PCM REPROGRAMMING
•  Verify repair information and verify that there is a new calibration in the PCM.
•  Is there a new calibration in the PCM?
Yes
Perform the PCM reprogramming and verify if the malfunction symptom was corrected.
•  If the malfunction recurs, replace the PCM.
No
Replace the PCM.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)