{"id":8984,"date":"2022-03-10T20:30:44","date_gmt":"2022-03-10T20:30:44","guid":{"rendered":"https:\/\/www.hexorcism.com\/19BP\/sm2334609\/"},"modified":"2022-03-10T20:30:44","modified_gmt":"2022-03-10T20:30:44","slug":"sm2334609","status":"publish","type":"page","link":"https:\/\/www.hexorcism.com\/19BP\/sm2334609\/","title":{"rendered":"ENGINE RUNS ROUGH\/ROLLING IDLE [SKYACTIV-G]"},"content":{"rendered":"
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ENGINE RUNS ROUGH\/ROLLING IDLE [SKYACTIV-G]<\/h3>\n<\/div>\n

SM2334609<\/p>\n

<\/p>\n
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id0103s4889500<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
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Troubleshooting item<\/p>\n<\/th>\n

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Engine runs rough\/rolling idle<\/p>\n<\/th>\n<\/tr>\n<\/thead>\n

\n
Description<\/span><\/div>\n<\/td>\n
\n
\u2022 Idle speed lower than the specification.<\/div>\n
\u2022 Idling speed unstable, increases\/decreases.<\/div>\n<\/td>\n<\/tr>\n
\n
Possible cause<\/span><\/div>\n<\/td>\n
\n
\u2022 Engine overheating<\/div>\n
\u2022 PCM DTC is stored<\/div>\n
\u2022 Erratic signal to PCM<\/div>\n
\n
\n
\u2015 APP sensor or related circuit malfunction<\/div>\n
\u2015 ECT sensor No.1 or related circuit malfunction<\/div>\n
\u2015 ECT sensor No.2 or related circuit malfunction<\/div>\n
\u2015 MAF sensor or related circuit malfunction<\/div>\n
\u2015 MAP sensor or related circuit malfunction<\/div>\n
\u2015 A\/F sensor or related circuit malfunction<\/div>\n
\u2015 HO2S or related circuit malfunction<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Improper load signal input<\/div>\n
\n
\n
\u2015 Improper A\/C request signal<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Improper operation of A\/C system<\/div>\n
\u2022 Improper operation of drive-by-wire control system<\/div>\n
\u2022 Incorrect fuel injection timing<\/div>\n
\u2022 Fuel injector malfunction<\/div>\n
\u2022 Purge solenoid valve malfunction<\/div>\n
\u2022 Poor fuel quality<\/div>\n
\u2022 Air leakage from intake-air system<\/div>\n
\u2022 Intake-air system restriction<\/div>\n
\u2022 Electrical connector disconnected<\/div>\n
\u2022 Fuel leakage<\/div>\n
\u2022 Vacuum leakage<\/div>\n
\u2022 Improper engine oil viscosity<\/div>\n
\u2022 Erratic signal from CKP sensor<\/div>\n
\n
\n
\u2015 Loose installation<\/div>\n
\u2015 Damaged trigger wheel (crankshaft pulley)<\/div>\n
\u2015 Open or short circuit in related wiring harness<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Erratic or no signal from CMP sensor<\/div>\n
\n
\n
\u2015 Loose installation<\/div>\n
\u2015 Damaged trigger wheel (intake camshaft and\/or exhaust camshaft)<\/div>\n
\u2015 Open or short circuit in related wiring harness<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Inadequate fuel pressure (high or low pressure side)<\/div>\n
\n
\n
\u2015 Fuel pressure sensor or related circuit malfunction<\/div>\n
\u2015 High pressure fuel pump malfunction<\/div>\n
\u2015 Spill valve control solenoid valve control circuit malfunction (damage to driver in PCM caused by short circuit to ground system)<\/div>\n
\u2015 Spill valve control solenoid valve malfunction (built-into high pressure fuel pump)<\/div>\n
\u2015 Relief valve (built-into high pressure fuel pump) malfunction<\/div>\n
\u2015 Fuel line restriction<\/div>\n
\u2015 Fuel filter clogged<\/div>\n
\u2015 Fuel pump unit malfunction<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Improper operation of electric variable valve timing control system (PCM DTC is stored.)<\/div>\n
\u2022 Improper operation of hydraulic variable valve timing control system<\/div>\n
\u2022 Low engine compression<\/div>\n
\u2022 Improper intake valve timing<\/div>\n
\u2022 Improper exhaust valve timing<\/div>\n
\u2022 Spark plug malfunction<\/div>\n
\u2022 Ignition coil malfunction<\/div>\n
\u2022 Exhaust system and\/or TWC restriction<\/div>\n
\u2022 PCV valve malfunction<\/div>\n
\u2022 Injector driver (built-into PCM) malfunction<\/div>\n<\/td>\n<\/tr>\n
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Possible cause<\/span><\/div>\n<\/td>\n
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\n
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Warning<\/div>\n<\/dd>\n
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\u2022 The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:<\/div>\n
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\u2015 Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.<\/div>\n
\u2015 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 \u201cFuel Line Safety Procedure\u201d to prevent the fuel from spraying. (See BEFORE SERVICE PRECAUTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See BEFORE SERVICE PRECAUTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
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\n
\u2022 Fuel may cause irritation if it comes in contact with skin and eyes.<\/div>\n
\u2022 If fuel ignites and causes a fire, it may lead to serious injury or death, and damage to property and facilities.<\/div>\n<\/dd>\n<\/dl>\n
\u2015 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 \u201cQuick Release Connector Removal\/Installation (fuel system)\u201d before performing the fuel hose installation, and execute the \u201cFuel Leakage Inspection\u201d after installation. (See QUICK RELEASE CONNECTOR (FUEL SYSTEM) REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See QUICK RELEASE CONNECTOR (FUEL SYSTEM) REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.) (See AFTER SERVICE PRECAUTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See AFTER SERVICE PRECAUTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/dd>\n<\/dl>\n<\/div>\n<\/dd>\n<\/dl>\n
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Caution<\/div>\n<\/dd>\n
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\u2022 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.<\/div>\n<\/dd>\n<\/dl>\n<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n
<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
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Caution<\/div>\n<\/dd>\n
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\u2022 Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.<\/div>\n<\/dd>\n<\/dl>\n

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Related PIDs<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
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PIDs<\/p>\n<\/th>\n

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Reference<\/p>\n<\/th>\n<\/tr>\n<\/thead>\n

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A\/C_REQ<\/div>\n<\/td>\n
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(See PID\/DATA MONITOR TABLE [PCM (SKYACTIV-G (US))]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
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APP1<\/div>\n<\/td>\n<\/tr>\n
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APP2<\/div>\n<\/td>\n<\/tr>\n
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ECT<\/div>\n<\/td>\n<\/tr>\n
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ECT_VOLT<\/div>\n<\/td>\n<\/tr>\n
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ECT2<\/div>\n<\/td>\n<\/tr>\n
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ECT2_VOLT<\/div>\n<\/td>\n<\/tr>\n
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FUEL_PRES<\/div>\n<\/td>\n<\/tr>\n
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LOAD_CALC<\/div>\n<\/td>\n<\/tr>\n
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LONG_FUEL_TRIM<\/div>\n<\/td>\n<\/tr>\n
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MAF<\/div>\n<\/td>\n<\/tr>\n
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MAP<\/div>\n<\/td>\n<\/tr>\n
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MAP_VOLT<\/div>\n<\/td>\n<\/tr>\n
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A\/F_SEN_CUR<\/div>\n<\/td>\n<\/tr>\n
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HO2S_OUT_VOLT<\/div>\n<\/td>\n<\/tr>\n
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ENG_RPM<\/div>\n<\/td>\n<\/tr>\n
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SHRT_FUEL_TRIM<\/div>\n<\/td>\n<\/tr>\n
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TP_RELAT<\/div>\n<\/td>\n<\/tr>\n
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VSS<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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Diagnostic Procedure<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
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Step<\/p>\n<\/th>\n

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Inspection<\/p>\n<\/th>\n

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Results<\/p>\n<\/th>\n

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Action<\/p>\n<\/th>\n<\/tr>\n<\/thead>\n

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1<\/div>\n<\/td>\n
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VERIFY IF MALFUNCTION INCLUDES HARD ENGINE STARTING<\/div>\n
\u2022 Verify the vehicle engine condition.<\/div>\n
\u2022 Can idling be maintained?<\/div>\n<\/td>\n
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Yes<\/div>\n<\/td>\n
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Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
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Perform the symptom troubleshooting \u201cENGINE STALLS-AFTER START\/AT IDLE\u201d.<\/div>\n
(See ENGINE STALLS-AFTER START\/AT IDLE [SKYACTIV-G]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
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2<\/div>\n<\/td>\n
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VERIFY IF MALFUNCTION CAUSE IS OVERHEATING<\/div>\n
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Warning<\/div>\n<\/dd>\n
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\u2022 While performing this step, always operate the vehicle in a safe and lawful manner.<\/div>\n
\u2022 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.<\/div>\n<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Access the ECT PID using the M-MDS. (See PID\/DATA MONITOR INSPECTION<\/a>.)<\/div>\n
\u2022 Is the ECT PID value less than 116 \u00b0C {241 \u00b0F}<\/span> during driving?<\/div>\n<\/td>\n
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Yes<\/div>\n<\/td>\n
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Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
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No<\/div>\n<\/td>\n
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The cause of this concern could be from the cooling system overheating.<\/div>\n
\u2022 Perform the symptom troubleshooting \u201cCOOLING SYSTEM CONCERNS-OVERHEATING\u201d. (See COOLING SYSTEM CONCERNS-OVERHEATING [SKYACTIV-G (US)]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
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3<\/div>\n<\/td>\n
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VERIFY PCM DTC<\/div>\n
\u2022 Perform the DTC inspection for the PCM. (See DTC INSPECTION<\/a>.)<\/div>\n
\u2022 Are any DTCs displayed?<\/div>\n<\/td>\n
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Yes<\/div>\n<\/td>\n
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Repair the malfunctioning location according to the applicable DTC troubleshooting.<\/div>\n
(See DTC TABLE [PCM (SKYACTIV-G (US))]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
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No<\/div>\n<\/td>\n
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Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
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4<\/div>\n<\/td>\n
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VERIFY CURRENT INPUT SIGNAL STATUS<\/div>\n
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Warning<\/div>\n<\/dd>\n
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\u2022 While performing this step, always operate the vehicle in a safe and lawful manner.<\/div>\n
\u2022 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.<\/div>\n<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Access the following PIDs using the M-MDS: (See PID\/DATA MONITOR INSPECTION<\/a>.)<\/div>\n
\n
\n
\u2015 APP1<\/div>\n
\u2015 APP2<\/div>\n
\u2015 ECT<\/div>\n
\u2015 ECT_VOLT<\/div>\n
\u2015 ECT2<\/div>\n
\u2015 ECT2_VOLT<\/div>\n
\u2015 MAF<\/div>\n
\u2015 MAP<\/div>\n
\u2015 MAP_VOLT<\/div>\n
\u2015 A\/F_SEN_CUR<\/div>\n
\u2015 HO2S_OUT_VOLT<\/div>\n
\u2015 SHRT_FUEL_TRIM<\/div>\n
\u2015 LONG_FUEL_TRIM<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Do the PIDs indicate the correct values under the malfunction condition? (See PID\/DATA MONITOR TABLE [PCM (SKYACTIV-G (US))]<\/a>.)<\/div>\n<\/td>\n
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Yes<\/div>\n<\/td>\n
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Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
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No<\/div>\n<\/td>\n
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APP1, APP2 PIDs are not as specified:<\/div>\n
\u2022 Inspect the APP sensor No.1 and No.2. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
ECT, ECT_VOLT, ECT2, ECT2_VOLT PIDs are not as specified:<\/div>\n
\u2022 Inspect the ECT sensor No.1 and No.2. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
MAF PID is not as specified:<\/div>\n
\u2022 Inspect the MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
MAP, MAP_VOLT PIDs are not as specified:<\/div>\n
\u2022 Inspect the MAP sensor. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
A\/F_SEN_CUR, SHRT_FUEL_TRIM, LONG_FUEL_TRIM PIDs are not as specified:<\/div>\n
\u2022 Inspect the A\/F sensor. (See AIR FUEL RATIO (A\/F) SENSOR INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See AIR FUEL RATIO (A\/F) SENSOR INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
HO2S_OUT_VOLT PID is not as specified:<\/div>\n
\u2022 Inspect the HO2S. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
Repair or replace the malfunctioning location.<\/div>\n
\u2022 If the malfunction remains:<\/div>\n
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\n
\u2015 Perform the \u201cAction for Non-repeatable Malfunction\u201d procedure. (See TROUBLESHOOTING PROCEDURE [(US)]<\/a>.)<\/div>\n<\/dd>\n<\/dl>\n<\/td>\n<\/tr>\n
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5<\/div>\n<\/td>\n
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DETERMINE IF MALFUNCTION CAUSE IS A\/C REQUEST SIGNAL OR OTHER<\/div>\n
\u2022 Access the A\/C_REQ PID using the M-MDS. (See PID\/DATA MONITOR INSPECTION<\/a>.)<\/div>\n
\u2022 Monitor the A\/C_REQ PID while turning on and off the air conditioner using the switch on the control panel.<\/div>\n
\u2022 Does the A\/C_REQ PID value change from on to off according to switch control panel?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
If the A\/C_REQ PID is always ON:<\/div>\n
\u2022 Perform the symptom troubleshooting \u201cA\/C IS ALWAYS ON OR A\/C COMPRESSOR RUNS CONTINUOUSLY\u201d. (See A\/C IS ALWAYS ON OR A\/C COMPRESSOR RUNS CONTINUOUSLY [SKYACTIV-G]<\/a>.)<\/div>\n
If the A\/C_REQ PID is always OFF:<\/div>\n
\u2022 Perform the symptom troubleshooting \u201cA\/C DOES NOT WORK SUFFICIENTLY\u201d. (See A\/C DOES NOT WORK SUFFICIENTLY [SKYACTIV-G]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
\n
6<\/div>\n<\/td>\n
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INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION<\/div>\n
\u2022 Perform the Electronic Control Throttle Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G (US)]<\/a>.)<\/div>\n
\u2022 Does the drive-by-wire control system work properly?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Visually inspect the throttle body (damage\/scratching).<\/div>\n
\u2022 If there is any malfunction:<\/div>\n
\n
\n
\u2015 Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/dd>\n<\/dl>\n
\u2022 If there is no malfunction:<\/div>\n
\n
\n
\u2015 Go to the next step.<\/div>\n<\/dd>\n<\/dl>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
7<\/div>\n<\/td>\n
\n
INSPECT FUEL INJECTOR OPERATION<\/div>\n
\u2022 Perform the Fuel Injector Operation Inspection. (See FUEL INJECTOR INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See FUEL INJECTOR INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Do the fuel injectors operate properly?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
8<\/div>\n<\/td>\n
\n
INSPECT PURGE CONTROL SYSTEM OPERATION<\/div>\n
\u2022 Perform the Purge Control System Inspection. (See PURGE SOLENOID VALVE INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See PURGE SOLENOID VALVE INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Does the purge solenoid valve work properly?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
9<\/div>\n<\/td>\n
\n
INSPECT RELATED PART CONDITION<\/div>\n
\u2022 Inspect the following:<\/div>\n
\n
\n
\u2015 Fuel quality (proper octane, contamination, winter\/summer blend)<\/div>\n
\u2015 Intake-air system restriction or leakage<\/div>\n
\u2015 Electrical connectors connection<\/div>\n
\u2015 Fuel leakage in fuel system<\/div>\n
\u2015 Vacuum leakage<\/div>\n
\u2015 Engine oil viscosity<\/div>\n
\u2015 CKP sensor, intake CMP sensor and exhaust CMP sensor<\/div>\n
\n
\n
\u2022 Installation condition (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.) (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Damaged trigger wheel, intake camshaft and exhaust camshaft<\/div>\n<\/dd>\n<\/dl>\n<\/dd>\n<\/dl>\n
\u2022 Is there any malfunction?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
10<\/div>\n<\/td>\n
\n
INSPECT FUEL PRESSURE (HIGH-SIDE)<\/div>\n
\u2022 Start the engine and warm it up completely.<\/div>\n
\u2022 Access the FUEL_PRES PID using the M-MDS at idle. (See PID\/DATA MONITOR INSPECTION<\/a>.)<\/div>\n
\u2022 Is the FUEL_PRES PID value within specification?<\/div>\n
Specification:<\/div>\n
\u2022 Approx. 3 MPa {31 kgf\/cm2<\/sup>, 435 psi} (Thailand specs.)<\/span><\/div>\n
\u2022 Approx. 10 MPa {102 kgf\/cm2<\/sup>, 1450 psi}<\/span> (except Thailand specs.)<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to Step 14.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Lower than specification:<\/div>\n
\u2022 Inspect the following:<\/div>\n
\n
\n
\u2015 Fuel leakage at the fuel line and fuel injector<\/div>\n
\u2015 Fuel pump<\/div>\n
\n
\n
\u2022 Perform the Fuel Pump (Low-pressure Side) Operation Inspection. (See FUEL PUMP UNIT INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See FUEL PUMP UNIT INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/dd>\n<\/dl>\n
\u2015 Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2015 High pressure fuel pump (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/dd>\n<\/dl>\n
\u2022 If there is any malfunction:<\/div>\n
\n
\n
\u2015 Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/dd>\n<\/dl>\n
\u2022 If there is no malfunction:<\/div>\n
\n
\n
\u2015 Go to Step 13.<\/div>\n<\/dd>\n<\/dl>\n
Higher than specification:<\/div>\n
\u2022 Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
11<\/div>\n<\/td>\n
\n
DETERMINE IF MALFUNCTION CAUSE IS FUEL PRESSURE SENSOR OR HIGH PRESSURE FUEL PUMP<\/div>\n
\u2022 Is the vehicle acceleration performance normal?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Go to Step 13.<\/div>\n<\/td>\n<\/tr>\n
\n
12<\/div>\n<\/td>\n
\n
INSPECT FUEL PRESSURE SENSOR FOR MALFUNCTION<\/div>\n
\u2022 Inspect the applicable part. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Is the part normal?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to Step 14.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Replace the fuel distributor and perform the repair completion verification.<\/div>\n
(See FUEL INJECTOR REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
(See FUEL INJECTOR REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
\n
13<\/div>\n<\/td>\n
\n
INSPECT SPILL VALVE CONTROL SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND<\/div>\n
\u2022 Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION<\/a>.)<\/div>\n
\u2022 Is the circuit normal?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Replace the high pressure fuel pump and perform the repair completion verification.<\/div>\n
(See HIGH PRESSURE FUEL PUMP REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
(See HIGH PRESSURE FUEL PUMP REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
14<\/div>\n<\/td>\n
\n
INSPECT FUEL PRESSURE (LOW-SIDE)<\/div>\n
\u2022 Connect the fuel pressure gauge between fuel pump and high pressure fuel pump.<\/div>\n
\u2022 Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Is the low side fuel pressure within specification?<\/div>\n
Specification:<\/div>\n
\u2022 475\u2014555 kPa {4.85\u20145.65 kgf\/cm2<\/sup>, 68.9\u201480.4 psi}<\/span><\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Inspect the following:<\/div>\n
\u2022 Fuel line restriction<\/div>\n
\u2022 Fuel filter clogged<\/div>\n
\n
\n
\u2015 If there is any malfunction:<\/div>\n
\n
\n
\u2022 Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/dd>\n<\/dl>\n
\u2015 If there is no malfunction:<\/div>\n
\n
\n
\u2022 Replace the fuel pump unit and perform the repair completion verification. (See FUEL PUMP UNIT REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See FUEL PUMP UNIT REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/dd>\n<\/dl>\n<\/dd>\n<\/dl>\n<\/td>\n<\/tr>\n
\n
15<\/div>\n<\/td>\n
\n
INSPECT ENGINE COMPRESSION<\/div>\n
\u2022 Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See COMPRESSION INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Are compression pressures within specification?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to Step 21.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
16<\/div>\n<\/td>\n
\n
INSPECT ELECTRIC VARIABLE VALVE TIMING DRIVER FOR MALFUNCTION<\/div>\n
\u2022 Inspect the applicable part. (See ELECTRIC VARIABLE VALVE TIMING MOTOR\/DRIVER INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See ELECTRIC VARIABLE VALVE TIMING MOTOR\/DRIVER INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Is the part normal?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n
(See ELECTRIC VARIABLE VALVE TIMING MOTOR\/DRIVER REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
(See ELECTRIC VARIABLE VALVE TIMING MOTOR\/DRIVER REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
\n
17<\/div>\n<\/td>\n
\n
INSPECT ELECTRIC VARIABLE VALVE TIMING MOTOR FOR MALFUNCTION<\/div>\n
\u2022 Inspect the applicable part. (See ELECTRIC VARIABLE VALVE TIMING MOTOR\/DRIVER INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See ELECTRIC VARIABLE VALVE TIMING MOTOR\/DRIVER INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Is the part normal?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n
(See ELECTRIC VARIABLE VALVE TIMING MOTOR\/DRIVER REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
(See ELECTRIC VARIABLE VALVE TIMING MOTOR\/DRIVER REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
\n
18<\/div>\n<\/td>\n
\n
INSPECT ELECTRIC VARIABLE VALVE TIMING ACTUATOR FOR MALFUNCTION<\/div>\n
\u2022 Inspect the applicable part. (See ELECTRIC VARIABLE VALVE TIMING ACTUATOR INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See ELECTRIC VARIABLE VALVE TIMING ACTUATOR INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Is the part normal?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n
(See ELECTRIC VARIABLE VALVE TIMING ACTUATOR, HYDRAULIC VARIABLE VALVE TIMING ACTUATOR REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
(See ELECTRIC VARIABLE VALVE TIMING ACTUATOR, HYDRAULIC VARIABLE VALVE TIMING ACTUATOR REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
\n
19<\/div>\n<\/td>\n
\n
INSPECT HYDRAULIC VARIABLE VALVE TIMING CONTROL SYSTEM OPERATION<\/div>\n
\u2022 Perform the Hydraulic Variable Valve Timing Control System Operation Inspection. (See OCV FOR HYDRAULIC VARIABLE VALVE TIMING SYSTEM INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See OIL CONTROL VALVE (OCV) INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Is there any malfunction?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
20<\/div>\n<\/td>\n
\n
INSPECT FOR MALFUNCTION DUE TO DEVIATED VALVE TIMING<\/div>\n
\u2022 Inspect the valve timing (timing chain installation condition). (See TIMING CHAIN REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See TIMING CHAIN REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Is the valve timing normal?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Inspect for the following engine internal parts:<\/div>\n
\u2022 Cylinder<\/div>\n
\u2022 Piston ring<\/div>\n
\u2022 Intake valve<\/div>\n
\u2022 Exhaust valve<\/div>\n
\u2022 Such as cylinder head gasket<\/div>\n
\n
\n
\u2015 If there is any malfunction:<\/div>\n
\n
\n
\u2022 Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/dd>\n<\/dl>\n<\/dd>\n<\/dl>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Adjust the valve timing to the correct timing and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
21<\/div>\n<\/td>\n
\n
INSPECT IGNITION SYSTEM OPERATION<\/div>\n
\u2022 Perform the Spark Test. (See SPARK INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See SPARK INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Is a strong blue spark visible at each cylinder?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
22<\/div>\n<\/td>\n
\n
INSPECT EXHAUST SYSTEM FOR RESTRICTION<\/div>\n
\u2022 Inspect for restriction in the exhaust system and the TWC.<\/div>\n
\u2022 Is there any restriction?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Go to the next step.<\/div>\n<\/td>\n<\/tr>\n
\n
23<\/div>\n<\/td>\n
\n
INSPECT IF MALFUNCTION CAUSE IS PCV VALVE OR INJECTOR DRIVER (PCM INTEGRATED)<\/div>\n
\u2022 Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Is there any malfunction?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Replace the PCV valve and perform the repair completion verification.<\/div>\n
(See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
(See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Injector driver malfunction.<\/div>\n
\u2022 Replace the PCM. (See PCM REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See PCM REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
If the problem remains, overhaul the engine and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
\n
Repair completion verification 1<\/div>\n<\/td>\n
\n
VERIFY THAT VEHICLE IS REPAIRED<\/div>\n
\u2022 Install\/connect the part removed\/disconnected during the troubleshooting procedure.<\/div>\n
\u2022 Has the malfunction symptom been eliminated?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Complete the symptom troubleshooting. (Explain contents of repair to customer)<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.<\/div>\n
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(US)]<\/a>.)<\/div>\n
\u2022 If the CAN communication is normal, perform the diagnosis from Step 1.<\/div>\n
\n
\n
\u2015 If the malfunction recurs, go to the next step.<\/div>\n<\/dd>\n<\/dl>\n<\/td>\n<\/tr>\n
\n
Repair completion verification 2<\/div>\n<\/td>\n
\n
VERIFY IF MALFUNCTION IS CAUSED BY NOT PERFORMING PCM REPROGRAMMING<\/div>\n
\u2022 Verify repair information and verify that there is a new calibration in the PCM.<\/div>\n
\u2022 Is there a new calibration in the PCM?<\/div>\n<\/td>\n
\n
Yes<\/div>\n<\/td>\n
\n
Perform the PCM reprogramming and verify if the malfunction symptom was corrected.<\/div>\n
\u2022 If the malfunction recurs, replace the PCM. (See PCM REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.) (See PCM REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
\n
No<\/div>\n<\/td>\n
\n
Replace the PCM.<\/div>\n
(See PCM REMOVAL\/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
(See PCM REMOVAL\/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n

<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

ENGINE RUNS ROUGH\/ROLLING IDLE [SKYACTIV-G] SM2334609 id0103s4889500 Troubleshooting item Engine runs rough\/rolling idle Description \u2022 Idle speed lower than the specification. \u2022 Idling speed unstable, increases\/decreases. Possible cause \u2022 Engine overheating \u2022 PCM DTC is stored \u2022 Erratic signal to PCM \u2015 APP sensor or related circuit malfunction \u2015 ECT sensor No.1 or related circuit malfunction \u2015 ECT sensor No.2 or related circuit malfunction \u2015 MAF sensor or related circuit malfunction \u2015 MAP sensor or […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-8984","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages\/8984","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/comments?post=8984"}],"version-history":[{"count":0,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages\/8984\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/media?parent=8984"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}