{"id":10036,"date":"2022-03-10T20:30:53","date_gmt":"2022-03-10T20:30:53","guid":{"rendered":"https:\/\/www.hexorcism.com\/19BP\/sm2565591\/"},"modified":"2022-03-10T20:30:53","modified_gmt":"2022-03-10T20:30:53","slug":"sm2565591","status":"publish","type":"page","link":"https:\/\/www.hexorcism.com\/19BP\/sm2565591\/","title":{"rendered":"ENGINE NOISE [SKYACTIV-G (US)]"},"content":{"rendered":"
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ENGINE NOISE [SKYACTIV-G (US)]<\/h3>\n<\/div>\n

SM2565591<\/p>\n

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id0103s48908s6<\/p>\n

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

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Engine noise<\/p>\n<\/th>\n<\/tr>\n<\/thead>\n

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Description<\/span><\/div>\n<\/td>\n
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\u2022 Engine noise from under hood.<\/div>\n<\/td>\n<\/tr>\n
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Possible cause<\/span><\/div>\n<\/td>\n
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Buzzing sound is heard from exhaust pipe during cold engine start:<\/div>\n
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Note<\/div>\n<\/dd>\n
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\u2022 During a cold engine start, sound occurs for up to approx. 30 s<\/span> with fast idle up for a drive-by-wire control and the warm-up promotion spark retard correction for ignition timing control.<\/div>\n<\/dd>\n<\/dl>\n<\/div>\n
\u2022 Sound occurs from drive-by-wire control, ignition control (vehicle is normal)<\/div>\n
\u2022 Dynamic damper loose<\/div>\n
\u2022 Exhaust system installation condition<\/div>\n
\u2022 Intake system installation condition<\/div>\n
Squeal, click, or chirp noise:<\/div>\n
\u2022 Improper engine oil level<\/div>\n
\u2022 Loose installation of solenoid valves<\/div>\n
\u2022 Improper drive belt tension<\/div>\n
\u2022 Generator installation<\/div>\n
\u2022 Auto tensioner bearing malfunction<\/div>\n
\u2022 Splash shield or under cover loose (splash water to drive belt)<\/div>\n
Thumping\/rattling or creaking sound noise:<\/div>\n
\u2022 Improper drive belt tension<\/div>\n
\u2022 Loose parts<\/div>\n
\u2022 Loose fitting heater hoses vibrating the heater hose bracket protector<\/div>\n
Hissing sound noise:<\/div>\n
\u2022 Vacuum leakage<\/div>\n
\u2022 Loose spark plug<\/div>\n
\u2022 Air leakage from the intake-air system<\/div>\n
Clattering noise:<\/div>\n
\u2022 Loose parts<\/div>\n
Pulsing sound is heard:<\/div>\n
\u2022 Exhaust shutter valve malfunction (With cylinder deactivation)<\/div>\n
Lightly tapping or rumbling noise:<\/div>\n
\u2022 Dynamic damper loose<\/div>\n
\u2022 Exhaust system loose<\/div>\n
\u2022 Intake-air system loose<\/div>\n
Other noise:<\/div>\n
\u2022 Electric variable valve timing actuator malfunction<\/div>\n
\u2022 Hydraulic variable valve timing actuator malfunction<\/div>\n
\u2022 Timing chain noise<\/div>\n
\u2022 Tappet noise<\/div>\n
\u2022 Hydraulic lash adjuster (HLA) noise<\/div>\n<\/td>\n<\/tr>\n
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Possible cause<\/span><\/div>\n<\/td>\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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\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
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System wiring diagram<\/span><\/div>\n<\/td>\n
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\u2022 Not applicable<\/div>\n<\/td>\n<\/tr>\n
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Connector diagram<\/span><\/div>\n<\/td>\n
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\u2022 Not applicable<\/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
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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 SYMPTOM<\/div>\n
\u2022 Verify the occurring sound.<\/div>\n<\/td>\n
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\u2014<\/div>\n<\/td>\n
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Buzzing sound is heard from exhaust pipe during cold engine start:<\/div>\n
\u2022 Go to the next step.<\/div>\n
Squeal, click, or chirp sound is heard:<\/div>\n
\u2022 Go to Step 3.<\/div>\n
Thumping\/rattling or creaking sound is heard:<\/div>\n
\u2022 Go to Step 4.<\/div>\n
Hissing sound is heard:<\/div>\n
\u2022 Go to Step 5.<\/div>\n
Clattering sound is heard:<\/div>\n
\u2022 Go to Step 6.<\/div>\n
Pulsing sound is heard: (With cylinder deactivation)<\/div>\n
\u2022 Go to Step 7.<\/div>\n
Lightly tapping or rumbling sound is heard:<\/div>\n
\u2022 Go to Step 8.<\/div>\n
Other noise is heard:<\/div>\n
\u2022 Go to Step 9.<\/div>\n<\/td>\n<\/tr>\n
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2<\/div>\n<\/td>\n
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BUZZING SOUND IS HEARD FROM EXHAUST PIPE DURING COLD ENGINE START<\/div>\n
\u2022 Verify the sound from the exhaust pipe during a cold engine start.<\/div>\n
\u2022 Does the sound disappear after approx. 30 s<\/span> have elapsed?<\/div>\n<\/td>\n
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Yes<\/div>\n<\/td>\n
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Note<\/div>\n<\/dd>\n
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\u2022 During a cold engine start, sound occurs for up to approx. 30 s<\/span> with fast idle up for a drive-by-wire control and the warm-up promotion spark retard correction for ignition timing control.<\/div>\n<\/dd>\n<\/dl>\n
Perform the repair completion verification because the operation is normal.<\/div>\n<\/td>\n<\/tr>\n
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No<\/div>\n<\/td>\n
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Inspect the following:<\/div>\n
\u2022 Exhaust system installation condition<\/div>\n
\u2022 Intake system installation condition<\/div>\n
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\u2015 If there is any malfunction:<\/div>\n
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\u2022 Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/dd>\n<\/dl>\n<\/dd>\n<\/dl>\n
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\u2015 If there is no malfunction:<\/div>\n
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\u2022 Go to repair completion verification.<\/div>\n<\/dd>\n<\/dl>\n<\/dd>\n<\/dl>\n<\/td>\n<\/tr>\n
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3<\/div>\n<\/td>\n
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VERIFY IF THERE IS SQUEAL, CLICK, OR CHIRP SOUND<\/div>\n
\u2022 Inspect the following:<\/div>\n
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\u2015 Engine oil level<\/div>\n
\u2015 Solenoid valves installation<\/div>\n
\u2015 Drive belt tension<\/div>\n
\u2015 Generator installation<\/div>\n
\u2015 Auto tensioner bearing damaged<\/div>\n
\u2015 Splash shield or under cover loose<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Is there any malfunction?<\/div>\n<\/td>\n
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Yes<\/div>\n<\/td>\n
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Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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No<\/div>\n<\/td>\n
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Go to repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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4<\/div>\n<\/td>\n
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VERIFY IF THERE IS THUMPING\/RATTLING OR CREAKING SOUND<\/div>\n
\u2022 Inspect the following:<\/div>\n
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\u2015 Drive belt tension<\/div>\n
\u2015 Loose parts in engine compartment<\/div>\n
\u2015 Loose fitting heater hoses vibrating the heater hose bracket protector<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Is there any malfunction?<\/div>\n<\/td>\n
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Yes<\/div>\n<\/td>\n
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Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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No<\/div>\n<\/td>\n
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Go to repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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5<\/div>\n<\/td>\n
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VERIFY IF THERE IS HISSING SOUND<\/div>\n
\u2022 Inspect the following:<\/div>\n
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\u2015 Vacuum leakage<\/div>\n
\u2015 Spark plug loose<\/div>\n
\u2015 Intake-air system leakage<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Is there any malfunction?<\/div>\n<\/td>\n
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Yes<\/div>\n<\/td>\n
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Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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No<\/div>\n<\/td>\n
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Go to repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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6<\/div>\n<\/td>\n
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VERIFY IF THERE IS CLATTERING SOUND<\/div>\n
\u2022 Inspect the location of rattle for loose parts.<\/div>\n
\u2022 Is there any malfunction?<\/div>\n<\/td>\n
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Yes<\/div>\n<\/td>\n
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Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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No<\/div>\n<\/td>\n
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Go to repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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7<\/div>\n<\/td>\n
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VERIFY IF THERE IS PULSING SOUND<\/div>\n
\u2022 Inspect the exhaust shutter valve. (See EXHAUST SHUTTER VALVE INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))]<\/a>.)<\/div>\n
\u2022 Is there any malfunction?<\/div>\n<\/td>\n
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Yes<\/div>\n<\/td>\n
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Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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No<\/div>\n<\/td>\n
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Go to repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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8<\/div>\n<\/td>\n
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VERIFY IF THERE IS LIGHTLY TAPPING OR RUMBLING SOUND<\/div>\n
\u2022 Inspect the following:<\/div>\n
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\u2015 Exhaust system installation condition<\/div>\n
\u2015 Intake system installation condition<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Is there any malfunction?<\/div>\n<\/td>\n
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Yes<\/div>\n<\/td>\n
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Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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No<\/div>\n<\/td>\n
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Go to repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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9<\/div>\n<\/td>\n
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VERIFY IF THERE IS KNOCK SOUND<\/div>\n
\u2022 Is knocking noise present?<\/div>\n<\/td>\n
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Yes<\/div>\n<\/td>\n
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Perform the symptom troubleshooting \u201cKNOCKING\/PINGING-ACCELERATION\/CRUISE\u201d.<\/div>\n
(See KNOCKING\/PINGING-ACCELERATION\/CRUISE [SKYACTIV-G]<\/a>.)<\/div>\n<\/td>\n<\/tr>\n
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No<\/div>\n<\/td>\n
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If noise comes from engine internal:<\/div>\n
\u2022 Inspect the following:<\/div>\n
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\u2015 Timing chain<\/div>\n
\u2015 Tappet noise<\/div>\n
\u2015 Hydraulic lash adjuster (HLA) noise<\/div>\n
\u2015 Electric variable valve timing actuator<\/div>\n
\u2015 Hydraulic variable valve timing actuator<\/div>\n
\u2015 Engine compression<\/div>\n<\/dd>\n<\/dl>\n
\u2022 Repair or replace the malfunctioning location and perform the repair completion verification.<\/div>\n<\/td>\n<\/tr>\n
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Repair completion verification 1<\/div>\n<\/td>\n
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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
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Yes<\/div>\n<\/td>\n
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Complete the symptom troubleshooting. (Explain contents of repair to customer)<\/div>\n<\/td>\n<\/tr>\n
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No<\/div>\n<\/td>\n
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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
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\u2015 If the malfunction recurs, go to the next step.<\/div>\n<\/dd>\n<\/dl>\n<\/td>\n<\/tr>\n
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Repair completion verification 2<\/div>\n<\/td>\n
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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
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Yes<\/div>\n<\/td>\n
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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
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No<\/div>\n<\/td>\n
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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
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<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

ENGINE NOISE [SKYACTIV-G (US)] SM2565591 id0103s48908s6 Troubleshooting item Engine noise Description \u2022 Engine noise from under hood. Possible cause Buzzing sound is heard from exhaust pipe during cold engine start: Note \u2022 During a cold engine start, sound occurs for up to approx. 30 s with fast idle up for a drive-by-wire control and the warm-up promotion spark retard correction for ignition timing control. \u2022 Sound occurs from drive-by-wire control, ignition control (vehicle is normal) […]<\/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-10036","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages\/10036","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=10036"}],"version-history":[{"count":0,"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/pages\/10036\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hexorcism.com\/19BP\/wp-json\/wp\/v2\/media?parent=10036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}