SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0]
- Verify malfunction symptoms using the following diagnostic index, then go to the appropriate troubleshooting
| No. | TROUBLESHOOTING ITEM | DESCRIPTION |
|---|
| 1 | Blown fuses | |
| 2 | Check engine light illuminates | Check engine light illuminates incorrectly. |
| 3 | Will not crank | Starter does not work. |
| 4 | Hard to start/long crank/erratic start/erratic crank | Starter cranks engine at normal speed but engine requires excessive cranking time before starting. Battery is operating normally. |
| 5 | Engine stalls | After start/at idle | Engine stops unexpectedly at idle, after start, or both. |
| 6 | Cranks normally but will not start | Starter cranks engine at normal speed but engine will not run. Refer to symptom troubleshooting " NO.5 ENGINE STALLS-AFTER START/AT IDLE " if this symptom appears after engine stalls. Fuel is in tank. Battery is in normal condition. |
| 7 | Engine oil pressure warning light illuminates | Engine oil pressure warning light illuminates incorrectly. |
| 8 | Engine runs rough/rolling idle | Engine speed fluctuates between specified idle speed and lower speed and, engine shakes excessively. Idle speed is too slow and engine shakes excessively. |
| 9 | Fast idle/runs on | Engine speed continues at fast idle after warm-up. Engine runs after ignition switch is turned off. |
| 10 | Low idle/stalls during deceleration | Engine stops unexpectedly at beginning of deceleration or recovery from deceleration. |
| 11 | Engine stalls/quits | Acceleration/cruise | Engine stops unexpectedly at beginning of acceleration or during acceleration. Engine stops unexpectedly while cruising. |
| Engine runs rough | Acceleration/cruise | Engine speed fluctuates during acceleration or cruising. |
| Misses | Acceleration/cruise | Engine misses during acceleration or cruising. |
| Buck/jerk | Acceleration/cruise/deceleration | Vehicle bucks/jerks during acceleration, cruising, or deceleration. |
| Hesitation/stumble | Acceleration | Momentary pause at beginning of acceleration or during acceleration. |
| Surges | Acceleration/cruise | Momentary minor irregularity in engine output. |
| 12 | Lack/loss of power | Acceleration/cruise | Performance is poor under load, (e.g., power down when climbing hills) |
| 13 | Knocking/pinging | Acceleration/cruise | Sound is produced when air/fuel mixture is ignited by something other than spark plug, (e.g., hot spot in combustion chamber) |
| 14 | Poor fuel economy | Fuel economy is unsatisfactory. |
| 15 | Emission compliance | Fails emissions test. |
| 16 | High oil consumption/leakage | Oil consumption is excessive. |
| 17 | Cooling system concerns | Overheating | Engine runs at higher than normal temperature/overheats. |
| 18 | Cooling system concerns | Runs cold | Engine does not reach normal operating temperature. |
| 19 | Exhaust smoke | Blue, black, or white smoke from exhaust system. |
| 20 | Fuel odor (in engine compartment) | Gasoline fuel smell or visible leakage. |
| 21 | Engine noise | Engine noise from under hood. |
| 22 | Vibration concerns (engine) | Vibration from under hood or driveline. |
| 23 | A/C does not work sufficiently | A/C compressor magnetic clutch does not engage when A/C switch is turned on. |
| 24 | A/C is always on or A/C compressor runs continuously | A/C compressor magnetic clutch does not disengage. |
| 25 | A/C is not cut off under wide open throttle conditions | A/C compressor magnetic clutch does not disengage under WOT. |
| 26 | Exhaust sulphur smell | Rotten egg smell (sulphur) from exhaust. |
| 27 | Fuel refill concerns | Fuel tank does not fill smoothly. |
| 28 | Fuel filling shut off concerns | Fuel does not shut off properly. |
| 29 | Spark plug condition | Incorrect spark plug condition. |
| 30 | ATX concerns | Upshift/downshift/engagement | ATX concerns not related to engine performance. |
QUICK DIAGNOSTIC CHART [SKYACTIV-G 2.0]
Quick Diagnostic Chart (1 Of 8). Scheme 87
Scheme 87: Quick Diagnostic Chart (1 Of 8)
Quick Diagnostic Chart (2 Of 8). Scheme 88
Scheme 88: Quick Diagnostic Chart (2 Of 8)
Quick Diagnostic Chart (3 Of 8). Scheme 89
Scheme 89: Quick Diagnostic Chart (3 Of 8)
Quick Diagnostic Chart (4 Of 8). Scheme 90
Scheme 90: Quick Diagnostic Chart (4 Of 8)
Quick Diagnostic Chart (5 Of 8). Scheme 91
Scheme 91: Quick Diagnostic Chart (5 Of 8)
Quick Diagnostic Chart (6 Of 8). Scheme 92
Scheme 92: Quick Diagnostic Chart (6 Of 8)
Quick Diagnostic Chart (7 Of 8). Scheme 93
Scheme 93: Quick Diagnostic Chart (7 Of 8)
Quick Diagnostic Chart (8 Of 8). Scheme 94
Scheme 94: Quick Diagnostic Chart (8 Of 8)
Diagnostic Procedure
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 2 | INSPECT INSTRUMENT CLUSTER Inspect the instrument cluster. (See INSTRUMENT CLUSTER INSPECTION ). Is there any malfunction? | Yes | Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION ). |
| No | Inspect for short or open circuit between the following terminals: Instrument cluster terminal B-PCM terminal 2AK Instrument cluster terminal D-PCM terminal 2AL Repair or replace the wiring harness if necessary. |
| 3 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | DETERMINE IF MALFUNCTION CAUSE IS IMMOBILIZER SYSTEM OR OTHER Are any of the following conditions present? Engine does not start completely. PCM DTC P1260:00 is displayed. | Yes | Both conditions present: Go to Step 4. |
| No | Either or other condition present: Go to the next step. |
| 2 | INSPECT PUSH BUTTON START CONNECTOR CONNECTION Inspect the connection of push button start connector. Is the push button start connector securely connected to the coil antenna? | Yes | Go to the next step. |
| No | Reconnect the push button start securely, then repeat from Step 1. |
| 3 | DETERMINE IF MALFUNCTION CAUSE IS INSTRUMENT CLUSTER OR OTHER Does the security light illuminate? | Yes | Go to the next step. |
| No | Inspect the instrument cluster and related wiring harness. (See INSTRUMENT CLUSTER INSPECTION ). Repair or replace the malfunctioning part according to the inspection results. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION ). |
| 4 | VERIFY IMMOBILIZER SYSTEM DTC Retrieve the immobilizer system DTC using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [IMMOBILIZER SYSTEM] ). |
| No | Go to the next step. |
| 5 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any continuous memory DTCs present? | Yes | Continuous memory DTC is displayed: Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). Communication error message is displayed: Inspect the following: Open circuit in wiring harness between main relay terminal E and PCM terminal 2K Open circuit in wiring harness between main relay terminal C and PCM terminal 1CK or 2S Main relay (stuck open) Open or short circuit in wiring harness between DLC-2 and PCM terminal 2AK or 2AL Open or poor ground circuit (PCM terminal 1BZ, 1CL, 1CP, 1CT, 1CX, 1DB, 1DH, 1DL and 2AA) Poor connection of vehicle body ground Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 6 | INSPECT POWER SUPPLY Access the VPWR PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Verify the VPWR PID value. Is the VPWR PID value B+ ? | Yes | Go to the next step. |
| No | Inspect the following: Battery connection Battery condition (See BATTERY INSPECTION [SKYACTIV-G 2.0] ). Fuse (See NO.1 BLOWN FUSES [SKYACTIV-G 2.0] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results, then repeat this step. |
| 7 | DETERMINE IF MALFUNCTION CAUSE IS STARTER RELAY CONTROL SIGNAL CIRCUIT OR OTHER Switch the ignition to start. Is a clicking sound heard from the starter relay? | Yes | Go to Step 17. |
| No | ATX: Go to Step 11. MTX: Go to the next step. |
| 8 | DETERMINE IF MALFUNCTION CAUSE IS STARTER INTERLOCK SWITCH OR OTHER Switch the ignition to off. Short the starter interlock switch terminals A and B (wiring harness-side) using a jumper wire. Switch the ignition to start. Does the engine start? | Yes | Inspect the starter interlock switch. (See STARTER INTERLOCK SWITCH INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Replace the starter interlock switch, then repeat Step 7. (See STARTER INTERLOCK SWITCH REMOVAL/INSTALLATION [C66M-R] ). If there is no malfunction: Go to the next step. |
| No | Go to the next step. |
| 9 | INSPECT STARTER INTERLOCK SWITCH CONNECTOR CONDITION Switch the ignition to off. Disconnect the starter interlock switch connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Is there any malfunction? | Yes | Repair or replace the connector and/or terminals, then repeat Step 7. |
| No | Go to the next step. |
| 10 | INSPECT STARTER INTERLOCK SWITCH GROUND CIRCUIT FOR OPEN CIRCUIT Verify that the starter interlock switch connector is disconnected. Inspect for continuity between starter interlock switch terminal B (wiring harness-side) and body ground. Is there continuity? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness for a possible open circuit, then repeat Step 7. |
| 11 | INSPECT STARTER RELAY Remove the starter relay. Inspect the starter relay. (See RELAY INSPECTION ). Is there any malfunction? | Yes | Replace the starter relay. Repeat Step 7. |
| No | Go to the next step. |
| 12 | INSPECT STARTER RELAY CONTROL CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT Starter relay is removed. Verify that the starter interlock switch connector is disconnected. (MTX) Measure the voltage at the starter relay terminal A (wiring harness-side) while cranking the engine. Is the voltage B+ ? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness for a possible short to ground or open circuit. Repeat Step 7. |
| 13 | INSPECT START STOP UNIT CONNECTOR CONDITION Switch the ignition to off. Disconnect the start stop unit connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Is there any malfunction? | Yes | Repair or replace the connector and/or terminals, then repeat Step 7. |
| No | Go to the next step. |
| 14 | INSPECT STARTER RELAY CONTROL CIRCUIT FOR SHORT TO GROUND Starter relay is removed. Verify that the starter interlock switch and start stop unit connectors are disconnected. Inspect for continuity between starter relay terminal E (wiring harness-side) and body ground. Is there continuity? | Yes | If the short to ground circuit could be detected in the wiring harness: Repair or replace the wiring harness for a possible short to ground. If the short to ground circuit could not be detected in the wiring harness: Replace the PCM (short to ground in the PCM internal circuit). (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Repeat Step 7. |
| No | Go to the next step. |
| 15 | INSPECT PCM CONNECTOR CONDITION Disconnect the PCM connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Is there any malfunction? | Yes | Repair or replace the connector and/or terminals, then repeat Step 7. |
| No | Go to the next step. |
| 16 | INSPECT STARTER RELAY CONTROL CIRCUIT FOR OPEN CIRCUIT Starter relay is removed. Verify that the starter interlock switch, start stop unit and PCM connectors are disconnected. Inspect for continuity between the following terminals (wiring harness-side): Starter relay terminal E-PCM terminal 2AZ Starter interlock switch terminal A-PCM terminal 2BD (MTX) Starter relay terminal E-Start stop unit terminal 1D Is there continuity? | Yes | Inspect the start stop unit. (See START STOP UNIT INSPECTION ). If there is any malfunction: Replace the start stop unit, then repeat Step 7. (See START STOP UNIT REMOVAL/INSTALLATION ). If there is no malfunction: Go to the next step. |
| No | Repair or replace the wiring harness for a possible open circuit, then repeat Step 7. |
| 17 | INSPECT WIRING HARNESS OF STARTER POWER SUPPLY CIRCUIT Inspect the following circuit: Between battery positive terminal and starter terminal 1A Between battery positive terminal and starter relay terminal D Between starter relay terminal C and starter terminal 2A Is there any malfunction? | Yes | Repair or replace the suspected wiring harness. |
| No | Go to the next step. |
| 18 | INSPECT STARTING SYSTEM Inspect the starting system. (See STARTER INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 19 | INSPECT IMMOBILIZER SYSTEM RELATED CIRCUIT Inspect the following wiring harness and connectors: Between push button start terminal A and start stop unit terminal 1AC Between push button start terminal B and start stop unit terminal 1AE Between PCM terminal 2AK and start stop unit terminal 2M Between PCM terminal 2AL and start stop unit terminal 2O Is there any malfunction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 20 | DETERMINE IF MALFUNCTION CAUSE IS BASE ENGINE OR OTHER Inspect for a seized/hydro locked engine or flywheel (MTX) or drive plate (ATX). Is the engine seized or hydro locked? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 21 | VERIFY PRESENT MALFUNCTION DTC Perform the KOEO self test. (See KOEO/KOER SELF TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 22 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | DETERMINE IF MALFUNCTION CAUSE IS OVERHEATING OR OTHER CAUTION: 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. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). 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 "NO.17 COOLING SYSTEM CONCERNS-OVERHEATING". (See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [SKYACTIV-G 2.0] ). |
| 2 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 3 | VERIFY CURRENT INPUT SIGNAL STATUS CAUTION: 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 following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). ECT MAF MAP O2S11 O2S12 SHRTFT1 LONGFT1 Do the PIDs indicate the correct values under the trouble condition? | Yes | Go to the next step. |
| No | ECT PID is not as specified: Inspect the ECT sensor No. 1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAF PID is not as specified: Inspect the MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAP PID is not as specified: Inspect the MAP sensor. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S11, SHRTFT1, LONGFT1 PIDs are not as specified: Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S12 PID is not as specified: Inspect the HO2S. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. If the malfunction remains: Perform the "INTERMITTENT CONCERN TROUBLESHOOTING" procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [SKYACTIV-G 2.0] ). |
| 4 | DETERMINE IF MALFUNCTION CAUSE IS DRIVE-BY-WIRE CONTROL SYSTEM OR OTHER Will the engine run smoothly at part throttle? | Yes | Go to the next step. |
| No | Go to Step 6. |
| 5 | INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION Perform the Electronic Control Throttle Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the drive-by-wire control system work properly? | Yes | Visually inspect the throttle body (damage/scratching). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 6 | INSPECT FUEL INJECTOR OPERATION Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Do the fuel injectors operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 7 | INSPECT PURGE CONTROL SYSTEM OPERATION Perform the Purge Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 8 | INSPECT MAF SENSOR Inspect the MAF sensor for the following: Contamination MAF sensor terminal B voltage (ground circuit) Is there any malfunction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 9 | INSPECT PCM FOR POOR GROUND Verify the PCM ground point condition. Is there any ground point loose or lifting in the PCM? | Yes | Repair the ground point. |
| No | Go to the next step. |
| 10 | INSPECT RELATED PART CONDITION Inspect the following: Fuel quality (proper octane, contamination, winter/summer blend) Fuel leakage Intake-air system leakage or restriction Vacuum leakage Engine oil viscosity CKP sensor, intake CMP sensor and exhaust CMP sensor Installation condition (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Damaged trigger wheel, intake camshaft and exhaust camshaft Is there any malfunction? | Yes | Service if necessary. Repeat this step. |
| No | Go to the next step. |
| 11 | INSPECT FUEL PRESSURE (HIGH-SIDE) Start the engine and warm it up completely. Access the FUEL_PRES PID using the M-MDS at idle. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the FUEL_PRES PID value approx. 3 MPa {31 kgf/cm 2 , 435 psi} ? | Yes | Go to Step 15. |
| No | Lower than 3 MPa {31 kgf/cm 2 , 435 psi} : Inspect the following: Fuel leakage at the fuel line and fuel injector Fuel pump Perform the Fuel Pump (Low-pressure Side) Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). High pressure fuel pump (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to Step 14. Higher than 3 MPa {31 kgf/cm 2 , 435 psi}: Go to the next step. |
| 12 | DETERMINE IF MALFUNCTION CAUSE IS FUEL PRESSURE SENSOR OR HIGH PRESSURE FUEL PUMP Is the vehicle acceleration performance normal? | Yes | Go to the next step. |
| No | Go to Step 14. |
| 13 | INSPECT FUEL PRESSURE SENSOR Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the fuel distributor. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to Step 15. |
| 14 | INSPECT SPILL VALVE CONTROL SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Disconnect the high pressure fuel pump and PCM connectors. Inspect for continuity between high pressure fuel pump terminal A (wiring harness-side) and body ground. Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground. If the malfunction remains: Replace the PCM. (damage to driver in PCM) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 15 | INSPECT FUEL PRESSURE (LOW-SIDE) Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 , 58.8-70.3 psi} | Yes | Go to the next step. |
| No | Inspect the following: Fuel line restriction Fuel filter clogged If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 16 | INSPECT STARTING SYSTEM Inspect the starting system. (See STARTER INSPECTION [SKYACTIV-G 2.0] ). Does the starting system work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 17 | INSPECT ENGINE COMPRESSION Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G 2.0] ). Are compression pressures within specification? Specification: Standard: 885 kPa {9.02 kgf/cm 2 ,128 psi} (300 rpm) Minimum: 708 kPa {7.22 kgf/cm 2 ,103 psi} (300 rpm) Maximum difference between cylinders: 150 kPa {1.53 kgf/cm 2 , 21.8 psi} NOTE: Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. | Yes | Go to the next step. |
| No | Inspect the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper intake valve timing Improper exhaust valve timing Service if necessary. |
| 18 | INSPECT IGNITION SYSTEM OPERATION Perform the Spark Test. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 19 | INSPECT EXHAUST SYSTEM FOR RESTRICTION Inspect for restriction in the exhaust system and the TWC. Is there any restriction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 20 | INSPECT IF MALFUNCTION CAUSE IS PCV VALVE OR INJECTOR DRIVER (PCM INTEGRATED) Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Injector driver malfunction. Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). If the problem remains, overhaul the engine. |
| 21 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
| CAUTION |
|---|
| 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. |
| CAUTION |
|---|
| 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. |
| NOTE |
|---|
| Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY IF MALFUNCTION CAUSE IS OVERHEATING CAUTION: 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. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). 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 "NO.17 COOLING SYSTEM CONCERNS-OVERHEATING". (See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [SKYACTIV-G 2.0] ). |
| 2 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 3 | VERIFY CURRENT INPUT SIGNAL STATUS CAUTION: 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 following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). APP1 APP2 ECT MAF MAP O2S11 O2S12 SHRTFT1 LONGFT1 Do the PIDs indicate the correct values under the trouble condition? | Yes | Go to the next step. |
| No | APP1, APP2 PIDs are not as specified: Inspect the APP sensor. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). ECT PID is not as specified: Inspect the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAF PID is not as specified: Inspect the MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAP PID is not as specified: Inspect the MAP sensor. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S11, SHRTFT1, LONGFT1 PIDs are not as specified: Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S12 PID is not as specified: Inspect the HO2S. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. If the malfunction remains: Perform the "INTERMITTENT CONCERN TROUBLESHOOTING" procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [SKYACTIV-G 2.0] ). |
| 4 | INSPECT PCM POWER SUPPLY VOLTAGE Access the VPWR PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the VPWR PID value B+ ? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness between main relay terminal C and PCM terminal 2S and 1CK. |
| 5 | INSPECT A/C CUT-OFF CONTROL SYSTEM OPERATION Perform the A/C Cut-off Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the A/C cut-off operation work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 6 | DETERMINE IF MALFUNCTION CAUSE IS DRIVE-BY-WIRE CONTROL SYSTEM OR OTHER Will the engine run smoothly at part throttle? | Yes | Go to the next step. |
| No | Go to Step 8. |
| 7 | INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION Perform the Electronic Control Throttle Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the drive-by-wire control system work properly? | Yes | Visually inspect the throttle body (damage/scratching). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 8 | INSPECT PURGE CONTROL SYSTEM OPERATION Perform the Purge Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 9 | INSPECT MAF SENSOR GROUND CIRCUIT FOR OPEN CIRCUIT Inspect the MAF sensor for the following: MAF sensor terminal B voltage (ground circuit) Is there any malfunction? | Yes | Repair or replace the suspected wiring harness. |
| No | Go to the next step. |
| 10 | INSPECT PCM FOR POOR GROUND Verify the PCM ground point condition. Is there any ground point loose or lifting in the PCM? | Yes | Repair the ground point. |
| No | Go to the next step. |
| 11 | INSPECT RELATED PART CONDITION Inspect the following: Fuel quality (proper octane, contamination, winter/summer blend) Intake-air system leakage or restriction Electrical connectors Poor connection for PCM ground and body ground Fuel leakage Vacuum leakage CKP sensor, intake CMP sensor and exhaust CMP sensor Installation condition (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Damaged trigger wheel, intake camshaft and exhaust camshaft Is there any malfunction? | Yes | Service if necessary. Repeat this step. |
| No | Go to the next step. |
| 12 | INSPECT FUEL PRESSURE (HIGH-SIDE) Start the engine and warm it up completely. Access the FUEL_PRES PID using the M-MDS at idle. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the FUEL_PRES PID value approx. 3 MPa {31 kgf/cm 2 , 435 psi}? | Yes | Go to Step 16. |
| No | Lower than 3 MPa {31 kgf/cm 2 , 435 psi}: Inspect the following: Fuel leakage at the fuel line and fuel injector Fuel pump Perform the Fuel Pump (Low-pressure Side) Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). High pressure fuel pump (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to Step 15. Higher than 3 MPa {31 kgf/cm 2 , 435 psi}: Go to the next step. |
| 13 | DETERMINE IF MALFUNCTION CAUSE IS FUEL PRESSURE SENSOR OR HIGH PRESSURE FUEL PUMP Is the vehicle acceleration performance normal? | Yes | Go to the next step. |
| No | Go to Step 15. |
| 14 | INSPECT FUEL PRESSURE SENSOR Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the fuel distributor. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to Step 16. |
| 15 | INSPECT SPILL VALVE CONTROL SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Disconnect the high pressure fuel pump and PCM connectors. Inspect for continuity between high pressure fuel pump terminal A (wiring harness-side) and body ground. Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground. If the malfunction remains: Replace the PCM. (damage to driver in PCM) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 16 | INSPECT FUEL PRESSURE (LOW-SIDE) Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 , 58.8-70.3 psi} | Yes | Go to the next step. |
| No | Inspect the following: Fuel line restriction Fuel filter clogged If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 17 | INSPECT FUEL INJECTOR OPERATION Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Do the fuel injectors operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 18 | INSPECT HYDRAULIC VARIABLE VALVE TIMING CONTROL SYSTEM OPERATION Perform the Hydraulic Variable Valve Timing Control System Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the hydraulic variable valve timing control system work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 19 | INSPECT ENGINE COMPRESSION Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G 2.0] ). Are compression pressures within specification? Specification: Standard: 885 kPa {9.02 kgf/cm 2 , 128 psi} (300 rpm) Minimum: 708 kPa {7.22 kgf/cm 2 , 103 psi} (300 rpm) Maximum difference between cylinders: 150 kPa {1.53 kgf/cm 2 , 21.8 psi} NOTE: Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. | Yes | Go to the next step. |
| No | Inspect the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper intake valve timing Improper exhaust valve timing Service if necessary. |
| 20 | INSPECT IGNITION SYSTEM OPERATION Perform the Spark Test. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 21 | INSPECT EXHAUST SYSTEM FOR RESTRICTION Inspect for restriction in the exhaust system and the TWO Is there any restriction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 22 | INSPECT IF MALFUNCTION CAUSE IS PCV VALVE OR INJECTOR DRIVER (PCM INTEGRATED) Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Injector driver malfunction. Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). If the problem remains, overhaul the engine. |
| 23 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
| CAUTION |
|---|
| 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. |
| CAUTION |
|---|
| 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. |
| NOTE |
|---|
| Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | INSPECT EFFECT OF VEHICLE CONDITION FOR MALFUNCTION Verify how the customer drives the vehicle by asking the customer the following: Because engine is started with accelerator pedal fully depressed, it goes into dechoke mode and fuel is not injected Is the engine started with accelerator pedal fully depressed? | Yes | Explain to the customer that the vehicle is normal and give them advice on how to start the engine and a specific example of the conditions in which the engine goes into dechoke mode. |
| No | Go to the next step. |
| 2 | VERIFY IF MALFUNCTION CAUSE IS OVERHEATING Access the ECT PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the ECT PI D 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 "NO.17 COOLING SYSTEM CONCERNS-OVERHEATING". (See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [SKYACTIV-G 2.0] ). |
| 3 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 4 | VERIFY CURRENT INPUT SIGNAL STATUS CAUTION: 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 following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). APP1 APP2 ECT MAF O2S11 O2S12 SHRTFT1 LONGFT1 Do the PIDs indicate the correct values under the trouble condition? | Yes | Go to the next step. |
| No | APP1, APP2 PIDs are not as specified: Inspect the APP sensor. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). ECT PID is not as specified: Inspect the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAF PID is not as specified: Inspect the MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S11, SHRTFT1, LONGFT1 PIDs are not as specified: Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S12 PID is not as specified: Inspect the HO2S. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. If the malfunction remains: Perform the "INTERMITTENT CONCERN TROUBLESHOOTING" procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [SKYACTIV-G 2.0] ). |
| 5 | DETERMINE IF MALFUNCTION CAUSE IS DRIVE-BY-WIRE CONTROL SYSTEM OR OTHER Will the engine run smoothly at part throttle? | Yes | Go to the next step. |
| No | Go to Step 7. |
| 6 | INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION Perform the Electronic Control Throttle Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the drive-by-wire control system work properly? | Yes | Visually inspect the throttle body (damage/scratching). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 7 | INSPECT PURGE CONTROL SYSTEM OPERATION Perform the Purge Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 8 | VERIFY IF MALFUNCTION CAUSE IS MAF SENSOR SIGNAL NOTE: If the inspection in Step 8 is performed, the PCM detects a DTC and performs failsafe control. After performing the inspection, clear DTCs using the M-MDS. Switch the ignition to off. Disconnect the MAF sensor/IAT sensor No.1 connector. Start the engine. Does the engine start normally? | Yes | Clean the MAF sensor. Verify that the symptom is solved. If the symptom remains, inspect the MAF sensor related wiring harness and connector. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the MAF sensor/IAT sensor No.1. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 9 | INSPECT FUEL INJECTOR RELAY Switch the ignition to off. Remove the fuel injector relay. Inspect the fuel injector relay. (See RELAY INSPECTION ). Is there any malfunction? | Yes | Replace the fuel injector relay. |
| No | Reinstall the fuel injector relay, then go to the next step. |
| 10 | INSPECT FUEL PUMP RELAY Remove the fuel pump relay. Inspect the fuel pump relay. (See RELAY INSPECTION ). Is there any malfunction? | Yes | Replace the fuel pump relay. |
| No | Inspect for short or open circuit between the following terminals: IG1 relay terminal C-PCM terminal 2AQ Battery positive terminal-PCM terminal 1CO Battery positive terminal-PCM terminal 1CS Battery positive terminal-PCM terminal 1CW Battery positive terminal-PCM terminal 1DA Battery positive terminal-PCM terminal 1DG Battery positive terminal-PCM terminal 1DK PCM terminal 2S-Body ground If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Reinstall the fuel pump relay, then go to the next step. |
| 11 | INSPECT RELATED PART CONDITION Inspect the following: Fuel quality (proper octane, contamination, winter/summer blend) Intake-air system leakage or restriction Electrical connectors Poor connection for PCM ground and body ground Fuses Fuel leakage Vacuum leakage CKP sensor and exhaust CMP sensor Installation condition (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Damaged trigger wheel exhaust camshaft Is there any malfunction? | Yes | Service if necessary. Repeat this step. |
| No | Go to the next step. |
| 12 | INSPECT FUEL PRESSURE (HIGH-SIDE) Access the FUEL_PRES PID using the M-MDS while cranking the engine. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the FUEL_PRES PID value within specification? Specification: 4-6 MPa {41-61 kgf/cm 2 , 581-870 psi} | Yes | Go to Step 14. |
| No | Lower than specification: Inspect the following: Fuel leakage at the fuel line and fuel injector Fuel pump Perform the Fuel Pump (Low-pressure Side) Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). High pressure fuel pump (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to the next step. Higher than specification: Go to the next step. |
| 13 | INSPECT SPILL VALVE CONTROL SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Disconnect the high pressure fuel pump and PCM connectors. Inspect for continuity between high pressure fuel pump terminal A (wiring harness-side) and body ground. Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground. If the malfunction remains: Replace the PCM. (damage to driver in PCM) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 14 | INSPECT FUEL PRESSURE (LOW-SIDE) Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 , 58.8-70.3 psi} | Yes | Go to the next step. |
| No | Inspect the following: Fuel line restriction Fuel filter clogged If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 15 | INSPECT FUEL INJECTOR OPERATION Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Do the fuel injectors operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 16 | INSPECT HYDRAULIC VARIABLE VALVE TIMING CONTROL SYSTEM OPERATION Perform the Hydraulic Variable Valve Timing Control System Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the hydraulic variable valve timing control system work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 17 | INSPECT FUEL TANK Inspect the fuel tank. (See FUEL TANK INSPECTION [SKYACTIV-G 2.0] ). Is vapor occurring? | Yes | Replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 18 | INSPECT HIGH PRESSURE FUEL PUMP Inspect the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 19 | INSPECT ENGINE COMPRESSION Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G 2.0] ). Are compression pressures within specification? Specification: Standard: 885 kPa {9.02 kgf/cm 2 , 128 psi} (300 rpm) Minimum: 708 kPa {7.22 kgf/cm 2 , 103 psi} (300 rpm) Maximum difference between cylinders: 150 kPa {1.53 kgf/cm 2 , 21.8 psi} NOTE: Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. | Yes | Go to the next step. |
| No | Inspect the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper intake valve timing Improper exhaust valve timing Service if necessary. |
| 20 | INSPECT IGNITION SYSTEM OPERATION NOTE: Because the malfunction may have been resolved by removing the carbon adhered to the spark plug during the spark inspection for the spark plug, verify that the repairs have been completed. Perform the Spark Test. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 21 | INSPECT EXHAUST SYSTEM FOR RESTRICTION Inspect for restriction in the exhaust system and the TWO Is there any restriction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 22 | INSPECT IF MALFUNCTION CAUSE IS PCV VALVE OR INJECTOR DRIVER (PCM INTEGRATED) Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Injector driver malfunction. Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). If the problem remains, overhaul the engine. |
| 23 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
| CAUTION |
|---|
| 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. |
| NOTE |
|---|
| If the inspection in Step 8 is performed, the PCM detects a DTC and performs failsafe control. After performing the inspection, clear DTCs using the M-MDS. |
| NOTE |
|---|
| Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. |
| NOTE |
|---|
| Because the malfunction may have been resolved by removing the carbon adhered to the spark plug during the spark inspection for the spark plug, verify that the repairs have been completed. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | INSPECT ENGINE OIL LEVEL Inspect the engine oil level. (See ENGINE OIL LEVEL INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Engine oil level is below L: Add genuine motor oil, then go to the next step. Engine oil level is above F: Replace the engine oil, then go to the next step. (penetration of fuel into engine oil can be considered) (See ENGINE OIL REPLACEMENT [SKYACTIV-G 2.0] ). |
| No | Go to Step 3. |
| 2 | VERIFY IF ENGINE OIL PRESSURE WARNING LIGHT ILLUMINATES Start the engine. Increase and keep the engine speed at 2,500 rpm for 5 s. Does the engine oil pressure warning light illuminate? | Yes | Go to the next step. |
| No | Symptom troubleshooting is completed. |
| 3 | VERIFY DTC Retrieve the PCM and instrument cluster DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). (See DTC INSPECTION [INSTRUMENT CLUSTER] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). (See DTC TABLE [INSTRUMENT CLUSTER] ). |
| No | Go to the next step. |
| 4 | INSPECT ENGINE OIL PRESSURE Inspect the engine oil pressure. (See OIL PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the oil pump, then go to the next step. (See OIL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Replace the oil pressure switch, then go to the next step. (See ENGINE OIL SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 5 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY IF MALFUNCTION INCLUDES HARD ENGINE STARTING Verify the vehicle engine condition. Can idling be maintained? | Yes | Go to the next step. |
| No | Perform the symptom troubleshooting "NO.5 ENGINE STALLS-AFTER START/AT IDLE". (See NO.5 ENGINE STALLS-AFTER START/AT IDLE [SKYACTIV-G 2.0] ). |
| 2 | VERIFY IF MALFUNCTION CAUSE IS OVERHEATING CAUTION: 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. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). 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 "NO.17 COOLING SYSTEM CONCERNS-OVERHEATING". (See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [SKYACTIV-G 2.0] ). |
| 3 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 4 | VERIFY CURRENT INPUT SIGNAL STATUS CAUTION: 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 following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). APP1 APP2 ECT MAF MAP O2S11 O2S12 SHRTFT1 LONGFT1 Do the PIDs indicate the correct values under the trouble condition? | Yes | Go to the next step. |
| No | APP1, APP2 PIDs are not as specified: Inspect the APP sensor. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). ECT PID is not as specified: Inspect the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAF PID is not as specified: Inspect the MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAP PID is not as specified: Inspect the MAP sensor. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S11, SHRTFT1, LONGFT1 PIDs are not as specified: Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S12 PID is not as specified: Inspect the HO2S. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. If the malfunction remains: Perform the "INTERMITTENT CONCERN TROUBLESHOOTING" procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [SKYACTIV-G 2.0] ). |
| 5 | DETERMINE IF MALFUNCTION CAUSE IS A/C REQUEST SIGNAL OR OTHER Access the AC_REQ PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Monitor the AC_REQ PID while turning on and off the air conditioner with switch on the control panel. Does the AC_REQ PID value change from on to off according to switch control panel? | Yes | Go to the next step. |
| No | If the AC_REQ PID is always ON: Perform the symptom troubleshooting "NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY". (See NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [SKYACTIV-G 2.0] ). If the AC_REQ PID is always OFF: Perform the symptom troubleshooting "NO.23 A/C DOES NOT WORK SUFFICIENTLY". (See NO.23 A/C DOES NOT WORK SUFFICIENTLY [SKYACTIV-G 2.0] ). |
| 6 | INSPECT A/C CUT-OFF CONTROL SYSTEM OPERATION Perform the A/C Cut-off Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the A/C cut-off operation work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 7 | INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION Perform the Electronic Control Throttle Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the drive-by-wire control system work properly? | Yes | Visually inspect the throttle body (damage/scratching). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 8 | INSPECT FUEL INJECTOR OPERATION Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Do the fuel injectors operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 9 | INSPECT PURGE CONTROL SYSTEM OPERATION Perform the Purge Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 10 | INSPECT RELATED PART CONDITION Inspect the following: Fuel quality (proper octane, contamination, winter/summer blend) Intake-air system restriction or leakage Electrical connectors connection Fuel leakage in fuel system Vacuum leakage Engine oil viscosity CKP sensor, intake CMP sensor and exhaust CMP sensor Installation condition (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Damaged trigger wheel, intake camshaft and exhaust camshaft Is there any malfunction? | Yes | Service if necessary. Repeat this step. |
| No | Go to the next step. |
| 11 | INSPECT FUEL PRESSURE (HIGH-SIDE) Start the engine and warm it up completely. Access the FUEL_PRES PID using the M-MDS at idle. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the FUEL_PRES PID value approx. 3 MPa {31 kgf/cm 2 , 435 psi}? | Yes | Go to Step 15. |
| No | Lower than 3 MPa {31 kgf/cm 2 , 435 psi}: Inspect the following: Fuel leakage at the fuel line and fuel injector Fuel pump Perform the Fuel Pump (Low-pressure Side) Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). High pressure fuel pump (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to Step 14. Higher than 3 MPa {31 kgf/cm 2 , 435 psi}: Go to the next step. |
| 12 | DETERMINE IF MALFUNCTION CAUSE IS FUEL PRESSURE SENSOR OR HIGH PRESSURE FUEL PUMP Is the vehicle acceleration performance normal? | Yes | Go to the next step. |
| No | Go to Step 14. |
| 13 | INSPECT FUEL PRESSURE SENSOR Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the fuel distributor. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to Step 15. |
| 14 | INSPECT SPILL VALVE CONTROL SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Disconnect the high pressure fuel pump and PCM connectors. Inspect for continuity between high pressure fuel pump terminal A (wiring harness-side) and body ground. Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground. If the malfunction remains: Replace the PCM. (damage to driver in PCM) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 15 | INSPECT FUEL PRESSURE (LOW-SIDE) Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 , 58.8-70.3 psi} | Yes | Go to the next step. |
| No | Inspect the following: Fuel line restriction Fuel filter clogged If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 16 | INSPECT HYDRAULIC VARIABLE VALVE TIMING CONTROL SYSTEM OPERATION Perform the Hydraulic Variable Valve Timing Control System Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the hydraulic variable valve timing control system work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 17 | INSPECT ENGINE COMPRESSION Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G 2.0] ). Are compression pressures within specification? Specification: Standard: 885 kPa {9.02 kgf/cm 2 ,128 psi} (300 rpm) Minimum: 708 kPa {7.22 kgf/cm 2 ,103 psi} (300 rpm) Maximum difference between cylinders: 150 kPa {1.53 kgf/cm 2 , 21.8 psi} NOTE: Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. | Yes | Go to the next step. |
| No | Inspect the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper intake valve timing Improper exhaust valve timing Service if necessary. |
| 18 | INSPECT IGNITION SYSTEM OPERATION Perform the Spark Test. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 19 | INSPECT EXHAUST SYSTEM FOR RESTRICTION Inspect for restriction in the exhaust system and the TWO Is there any restriction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 20 | INSPECT IF MALFUNCTION CAUSE IS PCV VALVE OR INJECTOR DRIVER (PCM INTEGRATED) Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Injector driver malfunction. Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). If the problem remains, overhaul the engine. |
| 21 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
| CAUTION |
|---|
| 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. |
| CAUTION |
|---|
| 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. |
| NOTE |
|---|
| Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | INSPECT COOLING SYSTEM FOR MALFUNCTION Access the ECT PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Start the engine and warm it up completely. Is the ECT PID value between 82-112°C {180-234°F}? | Yes | Go to the next step. |
| No | ECT PID value is higher than 112°C {234°F}: Perform the symptom troubleshooting "NO.17 COOLING SYSTEM CONCERNS-OVERHEATING". (See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [SKYACTIV-G 2.0] ). ECT PID value is less than 82°C {180°F} : Perform the symptom troubleshooting "NO.18 COOLING SYSTEM CONCERNS-RUNS COLD". (See NO.18 COOLING SYSTEM CONCERNS-RUNS COLD [SKYACTIV-G 2.0] ). |
| 2 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 3 | VERIFY CURRENT INPUT SIGNAL STATUS CAUTION: 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 following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). APP1 APP2 CPP (MTX) CPP/PNP (MTX) O2S11 O2S12 SHRTFT1 LONGFT1 Do the PIDs indicate the correct values under the trouble condition? | Yes | Go to the next step. |
| No | APP1, APP2 PIDs are not as specified: Inspect the APP sensor. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). CPP PID is not as specified: (MTX) Inspect the CPP switch. (See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [SKYACTIV-G 2.0] ). CPP/PNP PID is not as specified: (MTX) Inspect the neutral switch. (See NEUTRAL SWITCH INSPECTION [SKYACTIV-G 2.0] ). O2S11, SHRTFT1, LONGFT1 PIDs are not as specified: Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S12 PID is not as specified: Inspect the HO2S. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. If the malfunction remains: Inspect communication error between TCM and PCM. (ATX) Repair or replace the malfunctioning part according to the inspection results if necessary. Perform the "INTERMITTENT CONCERN TROUBLESHOOTING" procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [SKYACTIV-G 2.0] ). |
| 4 | DETERMINE IF MALFUNCTION CAUSE IS A/C REQUEST SIGNAL OR OTHER Access the AC_REQ PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Monitor the AC_REQ PID while turning on and off the air conditioner with switch on the control panel. Does the AC_REQ PID value change from on to off according to switch control panel? | Yes | Go to the next step. |
| No | If the AC_REQ PID is always ON: Perform the symptom troubleshooting "NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY". (See NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [SKYACTIV-G 2.0] ). If the AC_REQ PID is always OFF: Perform the symptom troubleshooting "NO.23 A/C DOES NOT WORK SUFFICIENTLY". (See NO.23 A/C DOES NOT WORK SUFFICIENTLY [SKYACTIV-G 2.0] ). |
| 5 | INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION Perform the Electronic Control Throttle Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the drive-by-wire control system work properly? | Yes | Visually inspect the throttle body (damage/scratching). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 6 | INSPECT FUEL INJECTOR OPERATION Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Do the fuel injectors operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 7 | INSPECT HIGH PRESSURE FUEL PUMP Inspect the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 8 | INSPECT CRUISE CONTROL SYSTEM Inspect the operation of cruise control system. Does the cruise control system work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 9 | INSPECT INTAKE-AIR SYSTEM FOR AIR LEAKAGE Inspect for leakage in intake-air system. Is there any leakage? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Injector driver malfunction. Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). If the problem remains, overhaul the engine. |
| 10 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
| CAUTION |
|---|
| 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. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY IF MALFUNCTION INCLUDES HARD ENGINE STARTING Is the engine unable to start after it has stalled? | Yes | If the engine is unable to start, perform the symptom troubleshooting "NO.3 WILL NOT CRANK" and "NO.6 CRANKS NORMALLY BUT WILL NOT START". (See NO.3 WILL NOT CRANK [SKYACTIV-G 2.0] ). (See NO.6 CRANKS NORMALLY BUT WILL NOT START [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 2 | VERIFY IF MALFUNCTION INCLUDES ROUGH IDLING Does the engine idle rough? | Yes | Perform the symptom troubleshooting "NO.8 ENGINE RUNS ROUGH/ROLLING IDLE". (See NO.8 ENGINE RUNS ROUGH/ROLLING IDLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 3 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 4 | VERIFY CURRENT INPUT SIGNAL STATUS CAUTION: 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 following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). APP1 APP2 BOO CPP (MTX) CPP/PNP (MTX) ECT MAF MAP TP REL O2S11 O2S12 SHRTFT1 LONGFT1 ALTT V Do the PIDs indicate the correct values under the trouble condition? | Yes | Go to the next step. |
| No | APP1, APP2 PIDs are not as specified: Inspect the APP sensor. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). BOO PID is not as specified: Inspect the brake switch. (See BRAKE SWITCH INSPECTION ). CPP PID is not as specified: (MTX) Inspect the CPP switch. (See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [SKYACTIV-G 2.0] ). CPP/PNP PID is not as specified: (MTX) Inspect the neutral switch. (See NEUTRAL SWITCH INSPECTION [SKYACTIV-G 2.0] ). ECT PID is not as specified: Inspect the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAF PID is not as specified: Inspect the MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAP PID is not as specified: Inspect the MAP sensor. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). TP REL PID is not as specified: Inspect the TP sensor. (See THROTTLE POSITION (TP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S11, SHRTFT1, LONGFT1 PIDs are not as specified: Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S12 PID is not as specified: Inspect the HO2S. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G 2.0] ). ALTT V PID is not as specified: Inspect the generator. (See GENERATOR INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. If the malfunction remains: Inspect communication error between TCM and PCM. (ATX) Repair or replace the malfunctioning part according to the inspection results if necessary. Perform the "INTERMITTENT CONCERN TROUBLESHOOTING" procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [SKYACTIV-G 2.0] ). |
| 5 | DETERMINE IF MALFUNCTION CAUSE IS A/C REQUEST SIGNAL OR OTHER Access the AC_REQ PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Monitor the AC_REQ PID while turning on and off the air conditioner with switch on the control panel. Does the AC_REQ PID value change from on to off according to switch control panel? | Yes | Go to the next step. |
| No | If the AC_REQ PID is always ON: Perform the symptom troubleshooting "NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY". (See NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [SKYACTIV-G 2.0] ). If the AC_REQ PID is always OFF: Perform the symptom troubleshooting "NO.23 A/C DOES NOT WORK SUFFICIENTLY". (See NO.23 A/C DOES NOT WORK SUFFICIENTLY [SKYACTIV-G 2.0] ). |
| 6 | INSPECT A/C CUT-OFF CONTROL SYSTEM OPERATION Perform the A/C Cut-off Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the A/C cut-off operation work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 7 | INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION Perform the Electronic Control Throttle Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the drive-by-wire control system work properly? | Yes | Visually inspect the throttle body (damage/scratching). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 8 | INSPECT FUEL INJECTOR OPERATION Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Do the fuel injectors operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 9 | INSPECT PURGE CONTROL SYSTEM OPERATION Perform the Purge Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 10 | INSPECT RELATED PART CONDITION Inspect the following: Fuel quality (proper octane, contamination, winter/summer blend) Intake-air system restriction or leakage Fuel leakage in fuel system Vacuum leakage Engine mount loose CKP sensor, intake CMP sensor and exhaust CMP sensor Installation condition (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Damaged trigger wheel, intake camshaft and exhaust camshaft Is there any malfunction? | Yes | Service if necessary. Repeat this step. |
| No | Go to the next step. |
| 11 | INSPECT FUEL PRESSURE (HIGH-SIDE) Start the engine and warm it up completely. Access the FUEL_PRES PID using the M-MDS at idle. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the FUEL_PRES PID value approx. 3 MPa {31 kgf/cm 2 , 435 psi}? | Yes | Go to Step 15. |
| No | Lower than 3 MPa {31 kgf/cm 2 , 435 psi}: Inspect the following: Fuel leakage at the fuel line and fuel injector Fuel pump Perform the Fuel Pump (Low-pressure Side) Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). High pressure fuel pump (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to Step 14. Higher than 3 MPa {31 kgf/cm 2 , 435 psi}: Go to the next step. |
| 12 | DETERMINE IF MALFUNCTION CAUSE IS FUEL PRESSURE SENSOR OR HIGH PRESSURE FUEL PUMP Is the vehicle acceleration performance normal? | Yes | Go to the next step. |
| No | Go to Step 14. |
| 13 | INSPECT FUEL PRESSURE SENSOR Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the fuel distributor. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to Step 15. |
| 14 | INSPECT SPILL VALVE CONTROL SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Disconnect the high pressure fuel pump and PCM connectors. Inspect for continuity between high pressure fuel pump terminal A (wiring harness-side) and body ground. Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground. If the malfunction remains: Replace the PCM. (damage to driver in PCM) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 15 | INSPECT FUEL PRESSURE (LOW-SIDE) Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 , 58.8-70.3 psi} | Yes | ATX: Inspect the TCC operation. (See ENGINE STALLS WHEN SHIFTED TO D, M OR R POSITION [FW6A-EL, FW6AX-EL] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to the next step. MTX: Go to the next step. |
| No | Inspect the following: Fuel line restriction Fuel filter clogged If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 16 | INSPECT IF MALFUNCTION CAUSE IS ENGINE COMPRESSION OR INJECTOR DRIVER (PCM INTEGRATED) Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G 2.0] ). Are compression pressures within specification? Specification: Standard: 885 kPa {9.02 kgf/cm 2 , 128 psi} (300 rpm) Minimum: 708 kPa {7.22 kgf/cm 2 , 103 psi} (300 rpm) Maximum difference between cylinders: 150 kPa {1.53 kgf/cm 2 , 21.8 psi} NOTE: Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. | Yes | Injector driver malfunction. Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). If the problem remains, overhaul the engine. |
| No | Inspect the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper intake valve timing Improper exhaust valve timing Service if necessary. |
| 17 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
| CAUTION |
|---|
| 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. |
| NOTE |
|---|
| Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY IF MALFUNCTION INCLUDES HARD ENGINE STARTING Is the engine unable to start after it has stalled? | Yes | If the engine is unable to start, perform the symptom troubleshooting "NO.3 WILL NOT CRANK" and "NO.6 CRANKS NORMALLY BUT WILL NOT START". (See NO.3 WILL NOT CRANK [SKYACTIV-G 2.0] ). (See NO.6 CRANKS NORMALLY BUT WILL NOT START [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 2 | VERIFY IF MALFUNCTION INCLUDES ROUGH IDLING Does the engine idle rough? | Yes | Perform the symptom troubleshooting "NO.8 ENGINE RUNS ROUGH/ROLLING IDLE". (See NO.8 ENGINE RUNS ROUGH/ROLLING IDLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 3 | VERIFY IF MALFUNCTION CAUSE IS OVERHEATING CAUTION: 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. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). 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 "NO.17 COOLING SYSTEM CONCERNS-OVERHEATING". (See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [SKYACTIV-G 2.0] ). |
| 4 | CONFIRM DRIVE-BY-WIRE CONTROL SYSTEM OPERATES WITH BRAKE OVERRIDE SYSTEM Retrieve the PCM DTC using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the DTC P2299:00 present? | Yes | Go to the applicable DTC inspection, (drive-by-wire control system operates with brake override system). (See DTC P2299:00 [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 5 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are and DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 6 | VERIFY CURRENT INPUT SIGNAL STATUS CAUTION: 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 following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). APP1 APP2 CPP (MTX) CPP/PNP (MTX) ECT FUEL_PRES IAT MAF MAP O2S11 O2S12 SHRTFT1 LONGFT1 Do the PIDs indicate the correct values under the trouble condition? | Yes | Go to the next step. |
| No | APP1, APP2 PIDs are not as specified: Inspect the APP sensor. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). CPP PID is not as specified: (MTX) Inspect the CPP switch. (See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [SKYACTIV-G 2.0] ). CPP/PNP PID is not as specified: (MTX) Inspect the neutral switch. (See NEUTRAL SWITCH INSPECTION [SKYACTIV-G 2.0] ). ECT PID is not as specified: Inspect the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). FUEL_PRES PID is not as specified: Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). IAT PID is not as specified: Inspect the IAT sensor No. 1. (See INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAF PID is not as specified: Inspect the MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAP PID is not as specified: Inspect the MAP sensor. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S11, SHRTFT1, LONGFT1 PIDs are not as specified: Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S12 PID is not as specified: Inspect the HO2S. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. If the malfunction remains: Inspect communication error between TCM and PCM. (ATX) Repair or replace the malfunctioning part according to the inspection results if necessary. Perform the "INTERMITTENT CONCERN TROUBLESHOOTING" procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [SKYACTIV-G 2.0] ). |
| 7 | INSPECT A/C CUT-OFF CONTROL SYSTEM OPERATION Perform the A/C Cut-off Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the A/C cut-off operation work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 8 | INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION Perform the Electronic Control Throttle Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the drive-by-wire control system work properly? | Yes | Visually inspect the throttle body (damage/scratching). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 9 | INSPECT FUEL INJECTOR OPERATION Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Do the fuel injectors operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 10 | INSPECT PURGE CONTROL SYSTEM OPERATION Perform the Purge Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 11 | INSPECT CURRENT A/F SENSOR SIGNAL Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Go to the next step. |
| No | Go to Step 13. |
| 12 | DETERMINE IF MALFUNCTION CAUSE IS A/F SENSOR MALFUNCTION OR A/F SENSOR RELATED WIRING HARNESS MALFUNCTION NOTE: If the inspection in Step 12 is performed, the PCM detects a DTC and performs failsafe control. After performing the inspection, clear DTCs using the M-MDS. Switch the ignition to off. Disconnect the A/F sensor connector. Verify the symptom. Does the symptom disappear? | Yes | Replace the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Inspect the following: Exhaust system leakage between exhaust manifold and A/F sensor Loose installation of A/F sensor If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Inspect the A/F sensor signal circuit. Repair or replace the suspected wiring harness if necessary. |
| 13 | INSPECT MAIN RELAY OPERATION Perform the Main Relay Operation Inspection with wiggle the related harness. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the main relay operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 14 | INSPECT RELATED PART CONDITION Inspect the following: Fuel quality (proper octane, contamination, winter/summer blend) Air leakage from intake-air system Intake-air system restriction Air cleaner element Clutch slippage (MTX) Fuel leakage from fuel line Vacuum leakage Engine mount loose CKP sensor, intake CMP sensor and exhaust CMP sensor Installation condition (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Damaged trigger wheel, intake camshaft and exhaust camshaft Is there any malfunction? | Yes | Service if necessary. Repeat this step. |
| No | Go to the next step. |
| 15 | INSPECT FUEL PRESSURE (HIGH-SIDE) Start the engine and warm it up completely. Access the FUEL_PRES PID using the M-MDS at idle. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the FUEL_PRES PID value approx. 3 MPa {31 kgf/cm 2 , 435 psi}? | Yes | Go to Step 19. |
| No | Lower than 3 MPa {31 kgf/cm 2 , 435 psi}: Inspect the following: Fuel leakage at the fuel line and fuel injector Fuel pump Perform the Fuel Pump (Low-pressure Side) Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). High pressure fuel pump (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to Step 18. Higher than 3 MPa {31 kgf/cm 2 , 435 psi}: Go to the next step. |
| 16 | DETERMINE IF MALFUNCTION CAUSE IS FUEL PRESSURE SENSOR OR HIGH PRESSURE FUEL PUMP Is the vehicle acceleration performance normal? | Yes | Go to the next step. |
| No | Go to Step 18. |
| 17 | INSPECT FUEL PRESSURE SENSOR Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the fuel distributor. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to Step 19. |
| 18 | INSPECT SPILL VALVE CONTROL SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Disconnect the high pressure fuel pump and PCM connectors. Inspect for continuity between high pressure fuel pump terminal A (wiring harness-side) and body ground. Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground. If the malfunction remains: Replace the PCM. (damage to driver in PCM) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 19 | INSPECT FUEL PRESSURE (LOW-SIDE) Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 , 58.8-70.3 psi} | Yes | Go to the next step. |
| No | Inspect the following: Fuel line restriction Fuel filter clogged If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 20 | INSPECT THROTTLE BODY FOR CLOGGING Visually inspect the throttle valve. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Is any foreign material adhering around the throttle valve? | Yes | Clean the throttle valve. |
| No | Go to the next step. |
| 21 | INSPECT ENGINE COMPRESSION Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G 2.0] ). Are compression pressures within specification? Specification: Standard: 885 kPa {9.02 kgf/cm 2 , 128 psi} (300 rpm) Minimum: 708 kPa {7.22 kgf/cm 2 , 103 psi} (300 rpm) Maximum difference between cylinders: 150 kPa {1.53 kgf/cm 2 21.8 psi} NOTE: Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. | Yes | Go to the next step. |
| No | Inspect the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper intake valve timing Improper exhaust valve timing Service if necessary. |
| 22 | INSPECT IGNITION SYSTEM OPERATION Perform the Spark Test. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 23 | INSPECT EXHAUST SYSTEM FOR RESTRICTION Inspect for restriction in the exhaust system and the TWC. Is there any restriction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 24 | INSPECT IF MALFUNCTION CAUSE IS PCV VALVE OR INJECTOR DRIVER (PCM INTEGRATED) Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Injector driver malfunction. Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). If the problem remains, overhaul the engine. |
| 25 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
| CAUTION |
|---|
| 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. |
| CAUTION |
|---|
| 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. |
| NOTE |
|---|
| If the inspection in Step 12 is performed, the PCM detects a DTC and performs failsafe control. After performing the inspection, clear DTCs using the M-MDS. |
| NOTE |
|---|
| Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY IF MALFUNCTION INCLUDES ROUGH IDLING Does the engine idle rough? | Yes | Perform the symptom troubleshooting "NO.8 ENGINE RUNS ROUGH/ROLLING IDLE". (See NO.8 ENGINE RUNS ROUGH/ROLLING IDLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 2 | VERIFY IF MALFUNCTION CAUSE IS OVERHEATING Is the engine overheating? | Yes | Perform the symptom troubleshooting "NO.17 COOLING SYSTEM CONCERNS-OVERHEATING". (See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 3 | CONFIRM DRIVE-BY-WIRE CONTROL SYSTEM OPERATES WITH BRAKE OVERRIDE SYSTEM Retrieve the PCM DTC using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the DTC P2299:00 present? | Yes | Go to the applicable DTC inspection, (drive-by-wire control system operates with brake override system). (See DTC P2299:00 [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 4 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 5 | VERIFY CURRENT INPUT SIGNAL STATUS CAUTION: 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 following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). APP1 APP2 CPP (MTX) CPP/PNP (MTX) ECT FUEL_PRES IAT MAF MAP TP REL O2S11 O2S12 SHRTFT1 LONGFT1 Do the PIDs indicate the correct values under the trouble condition? | Yes | Go to the next step. |
| No | APP1, APP2 PIDs are not as specified: Inspect the APP sensor. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). CPP PID is not as specified: (MTX) Inspect the CPP switch. (See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [SKYACTIV-G 2.0] ). CPP/PNP PID is not as specified: (MTX) Inspect the neutral switch. (See NEUTRAL SWITCH INSPECTION [SKYACTIV-G 2.0] ). ECT PID is not as specified: Inspect the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). FUEL_PRES PID is not as specified: Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). IAT PID is not as specified: Inspect the IAT sensor No. 1. (See INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAF PID is not as specified: Inspect the MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAP PID is not as specified: Inspect the MAP sensor. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). TP REL PID is not as specified: Inspect the TP sensor. (See THROTTLE POSITION (TP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S11, SHRTFT1, LONGFT1 PIDs are not as specified: Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S12 PID is not as specified: Inspect the HO2S. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. If the malfunction remains: Inspect communication error between TCM and PCM. (ATX) Repair or replace the malfunctioning part according to the inspection results if necessary. Perform the "INTERMITTENT CONCERN TROUBLESHOOTING" procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [SKYACTIV-G 2.0] ). |
| 6 | INSPECT A/C CUT-OFF CONTROL SYSTEM OPERATION Perform the A/C Cut-off Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the A/C cut-off operation work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 7 | INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION Perform the Electronic Control Throttle Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the drive-by-wire control system work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 8 | INSPECT FUEL INJECTOR OPERATION Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Do the fuel injectors operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 9 | INSPECT PURGE CONTROL SYSTEM OPERATION Perform the Purge Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 10 | INSPECT FUEL SYSTEM FOR FUEL LEAKAGE Inspect for fuel leakage in the fuel line. Is there any leakage? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 11 | INSPECT RELATED PART CONDITION Inspect the following: Fuel quality (proper octane, contamination, winter/summer blend) Air leakage or restriction in intake-air system Air cleaner restricted or dirty Vacuum leakage Clutch slippage (MTX) Brake dragging Tire air pressure CKP sensor, intake CMP sensor and exhaust CMP sensor Installation condition (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Damaged trigger wheel, intake camshaft and exhaust camshaft Is there any malfunction? | Yes | Service if necessary. Repeat this step. |
| No | Go to the next step. |
| 12 | INSPECT FUEL PRESSURE (HIGH-SIDE) Start the engine and warm it up completely. Access the FUEL_PRES PID using the M-MDS at idle. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the FUEL_PRES PID value approx. 3 MPa {31 kgf/cm 2 , 435 psi}? | Yes | Go to Step 14. |
| No | Lower than 3 MPa {31 kgf/cm 2 , 435 psi}: Inspect the following: Fuel leakage at the fuel line and fuel injector Fuel pump Perform the Fuel Pump (Low-pressure Side) Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). High pressure fuel pump (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to the next step. Higher than 3 MPa {31 kgf/cm 2 , 435 psi}: Go to the next step. |
| 13 | INSPECT SPILL VALVE CONTROL SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Disconnect the high pressure fuel pump and PCM connectors. Inspect for continuity between high pressure fuel pump terminal A (wiring harness-side) and body ground. Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground. If the malfunction remains: Replace the PCM. (damage to driver in PCM) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 14 | INSPECT FUEL PRESSURE (LOW-SIDE) Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 , 58.8-70.3 psi} | Yes | Go to the next step. |
| No | Inspect the following: Fuel line restriction Fuel filter clogged If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 15 | INSPECT HYDRAULIC VARIABLE VALVE TIMING CONTROL SYSTEM OPERATION Perform the Hydraulic Variable Valve Timing Control System Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the hydraulic variable valve timing control system work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 16 | INSPECT THROTTLE BODY FOR CLOGGING Visually inspect the throttle valve. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Is any foreign material adhering around the throttle valve? | Yes | Clean the throttle valve. |
| No | Go to the next step. |
| 17 | INSPECT ENGINE COMPRESSION Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G 2.0] ). Are compression pressures within specification? Specification: Standard: 885 kPa {9.02 kgf/cm 2 , 128 psi} (300 rpm) Minimum: 708 kPa {7.22 kgf/cm 2 , 103 psi} (300 rpm) Maximum difference between cylinders: 150 kPa {1.53 kgf/cm 2 , 21.8 psi} NOTE: Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. | Yes | Go to the next step. |
| No | Inspect the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper intake valve timing Improper exhaust valve timing Service if necessary. |
| 18 | VERIFY SPARK PLUG CONDITION Inspect the spark plug condition. (See SPARK PLUG INSPECTION [SKYACTIV-G 2.0] ). Is the spark plug wet, covered with carbon or grayish white? | Yes | Spark plug is wet or covered with carbon: Perform the Spark Test. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. Spark plug is grayish white: Inspect the fuel injector for restriction. Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 19 | INSPECT EXHAUST SYSTEM FOR RESTRICTION Inspect for restriction in the exhaust system and the TWC. Is there any restriction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 20 | INSPECT IF MALFUNCTION CAUSE IS PCV VALVE OR INJECTOR DRIVER (PCM INTEGRATED) Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Injector driver malfunction. Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). If the problem remains, overhaul the engine. |
| 21 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
| CAUTION |
|---|
| 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. |
| NOTE |
|---|
| Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY IF MALFUNCTION INCLUDES ROUGH IDLING Does the engine idle rough? | Yes | Perform the symptom troubleshooting "NO.8 ENGINE RUNS ROUGH/ROLLING IDLE". (See NO.8 ENGINE RUNS ROUGH/ROLLING IDLE [SKYACTIV-G 2.0] ). |
| 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 CAUTION: 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. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). 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 "NO.17 COOLING SYSTEM CONCERNS-OVERHEATING". (See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [SKYACTIV-G 2.0] ). |
| 4 | VERIFY SPARK PLUG CONDITION Remove all spark plugs. (See SPARK PLUG REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Inspect the spark plug. (See SPARK PLUG INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the spark plug. (See SPARK PLUG REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 5 | 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, vacuum hose). Is there any malfunction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 6 | INSPECT MAP SENSOR Access the following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). MAP BARO Measure the intake manifold vacuum when idling (no load). (See INTAKE MANIFOLD VACUUM INSPECTION [SKYACTIV-G 2.0] ). 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. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 7 | INSPECT MAF SENSOR Inspect the MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the MAF sensor/IAT sensor No.1. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 8 | INSPECT MAP SENSOR Inspect the MAP sensor resistance. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the MAP sensor/IAT sensor No.2. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 9 | INSPECT ECT SENSOR NO.1 Inspect the ECT sensor No.1 resistance. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 10 | REPLACE KS Replace the KS. (See KNOCK SENSOR (KS) REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Does the symptom disappear? | Yes | Symptom troubleshooting completed. |
| No | Remove the accumulated matter in the cylinder head using the following procedure: Carbon remover Overhauling |
| 11 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
| CAUTION |
|---|
| 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. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY IF MALFUNCTION CAUSED BY ENGINE MALFUNCTION Verify the vehicle engine condition. Can malfunction symptoms other than "NO.14 POOR FUEL ECONOMY" be verified? | Yes | Go to the applicable symptom troubleshooting. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 2 | INSPECT COOLING SYSTEM FOR MALFUNCTION Is any cooling system concern (overheating, runs cold) present? | Yes | Perform the applicable symptom troubleshooting. (See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [SKYACTIV-G 2.0] ). (See NO.18 COOLING SYSTEM CONCERNS-RUNS COLD [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 3 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 4 | VERIFY CURRENT INPUT SIGNAL STATUS CAUTION: 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 following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). APP1 APP2 ECT IAT MAF MAP TP REL Do the PIDs indicate the correct values under the trouble condition? | Yes | Go to the next step. |
| No | APP1, APP2 PIDs are not as specified: Inspect the APP sensor. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). ECT PID is not as specified: Inspect the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). IAT PID is not as specified: Inspect the IAT sensor No.1. (See INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAF PID is not as specified: Inspect the MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAP PID is not as specified: Inspect the MAP sensor. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). TP REL PID is not as specified: Inspect the TP sensor. (See THROTTLE POSITION (TP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. If the malfunction remains: Perform the "INTERMITTENT CONCERN TROUBLESHOOTING" procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [SKYACTIV-G 2.0] ). |
| 5 | DETERMINE IF MALFUNCTION CAUSE IS A/C REQUEST SIGNAL OR OTHER Access the AC_REQ PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Monitor the AC_REQ PID while turning on and off the air conditioner with switch on the control panel. Does the AC_REQ PID value change from on to off according to switch control panel? | Yes | Go to the next step. |
| No | If the AC_REQ PID is always ON: Perform the symptom troubleshooting "NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY". (See NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [SKYACTIV-G 2.0] ). If the AC_REQ PID is always OFF: Perform the symptom troubleshooting "NO.23 A/C DOES NOT WORK SUFFICIENTLY". (See NO.23 A/C DOES NOT WORK SUFFICIENTLY [SKYACTIV-G 2.0] ). |
| 6 | INSPECT COOLING FAN CONTROL SYSTEM OPERATION Perform the Cooling Fan Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the cooling fan control system operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 7 | INSPECT A/C CUT-OFF CONTROL SYSTEM OPERATION Perform the A/C Cut-off Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the A/C cut-off operation work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 8 | INSPECT FUEL INJECTOR OPERATION Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Do the fuel injectors operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 9 | INSPECT ENGINE.IG1 7.5 A FUSE Switch the ignition to off. Remove the ENGINE.IG1 7.5 A fuse. Inspect the ENGINE.IG1 7.5 A fuse. Is there any malfunction? | Yes | If the fuse is blown: Repair or replace the wiring harness for a possible short to ground. Replace the fuse. If the fuse is deteriorated: Replace the fuse. Go to the next step. |
| No | Reinstall the ENGINE.IG1 7.5 A fuse, then go to the next step. |
| 10 | INSPECT IG1 RELAY CIRCUIT FOR SHORT TO POWER SUPPLY Remove the IG1 relay. Disconnect the PCM connector. Measure the voltage at the IG1 relay terminal C (wiring harness-side). Is the voltage 0 V ? | Yes | Inspect the IG1 relay. (See RELAY INSPECTION ). If there is any malfunction: Replace the IG1 relay. If there is no malfunction: Reconnect all disconnected connectors. Go to the next step. |
| No | Repair or replace the wiring harness for a possible short to power supply. |
| 11 | INSPECT RELATED PART CONDITION Inspect the following: Air cleaner element for contamination Intake-air system restriction Fuel quality (proper octane, contamination, winter/summer blend) Coolant level Clutch slippage (MTX) ATF level (ATX) Brake dragging Tire air pressure Vacuum leakage Fuel leakage MAF sensor contaminated Tires, wheels (large size) Change of intake air system components and exhaust system components Engine operation time is longer than traveled distance Vehicle is driven in congested traffic frequently Left idling for long periods Amount of fuel injection increases Overloaded Frequent acceleration/deceleration Frequently driving on ascending roads Travel distance per one drive is short Driver forgets to switch electronic device off Electronic device is frequently used with engine stopped (no power generation) Vehicle left undriven for long periods Large amount of parasitic draw CKP sensor, intake CMP sensor and exhaust CMP sensor Installation condition (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Damaged trigger wheel, intake camshaft and exhaust camshaft Is there any malfunction? | Yes | Service if necessary. Repeat this step. |
| No | Go to the next step. |
| 12 | INSPECT FUEL PRESSURE (HIGH-SIDE) Start the engine and warm it up completely. Access the FUEL_PRES PID using the M-MDS at idle. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the FUEL_PRES PID value approx. 3 MPa {31 kgf/cm 2 , 435 psi}? | Yes | Go to Step 16. |
| No | Lower than 3 MPa {31 kgf/cm 2 , 435 psi}: Inspect the following: Fuel leakage at the fuel line and fuel injector Fuel pump Perform the Fuel Pump (Low-pressure Side) Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). High pressure fuel pump (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to Step 15. Higher than 3 MPa {31 kgf/cm 2 , 435 psi}: Go to the next step. |
| 13 | DETERMINE IF MALFUNCTION CAUSE IS FUEL PRESSURE SENSOR OR HIGH PRESSURE FUEL PUMP Is the vehicle acceleration performance normal? | Yes | Go to the next step. |
| No | Go to Step 15. |
| 14 | INSPECT FUEL PRESSURE SENSOR Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the fuel distributor. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to Step 16. |
| 15 | INSPECT SPILL VALVE CONTROL SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Disconnect the high pressure fuel pump and PCM connectors. Inspect for continuity between high pressure fuel pump terminal A (wiring harness-side) and body ground. Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground. If the malfunction remains: Replace the PCM. (damage to driver in PCM) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 16 | INSPECT FUEL PRESSURE (LOW-SIDE) Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 , 58.8-70.3 psi} | Yes | Go to the next step. |
| No | Inspect the following: Fuel line restriction Fuel filter clogged If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 17 | INSPECT ENGINE COMPRESSION Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G 2.0] ). Are compression pressures within specification? Specification: Standard: 885 kPa {9.02 kgf/cm 2 ,128 psi} (300 rpm) Minimum: 708 kPa {7.22 kgf/cm 2 ,103 psi} (300 rpm) Maximum difference between cylinders: 150 kPa {1.53 kgf/cm 2 , 21.8 psi} NOTE: Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. | Yes | Go to the next step. |
| No | Inspect the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper intake valve timing Improper exhaust valve timing Service if necessary. |
| 18 | INSPECT IGNITION SYSTEM OPERATION Perform the Spark Test. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Is the strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 19 | INSPECT EXHAUST SYSTEM FOR RESTRICTION Inspect for restriction in the exhaust system and the TWO Is there any restriction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 20 | INSPECT IF MALFUNCTION CAUSE IS PCV VALVE OR INJECTOR DRIVER (PCM INTEGRATED) Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Injector driver malfunction. Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). If the problem remains, overhaul the engine. |
| 21 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
| CAUTION |
|---|
| 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. |
| NOTE |
|---|
| Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 2 | VERIFY DRIVE MODE CONDITION Verify that the drive mode is completed. Is the drive mode completed? | Yes | Go to the next step. |
| No | Perform the Drive Mode. (See OBD-II DRIVE MODE [SKYACTIV-G 2.0] ). |
| 3 | INSPECT FOR ANY OTHER MALFUNCTION Can malfunction symptoms other than "NO.15 EMISSION COMPLIANCE" be verified? | Yes | Go to the applicable symptom troubleshooting. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 4 | VERIFY CO AND HC CONCENTRATION Verify CO and HC concentration. Is the CO or HC concentration excessive? | Yes | Go to Step 6. NOTE: If the HC concentration is normal and the CO concentration is excessive, a rich A/F can be considered the cause. If the CO concentration is normal and the HC concentration is excessive, a A/F lean can be considered the cause. If the CO and HC concentration is excessive, incomplete combustion or a rich A/F can be considered the cause. |
| No | Go to the next step. |
| 5 | VERIFY NOx CONCENTRATION Verify NOx concentration. Is the NOx concentration excessive? | Yes | Go to the next step. |
| No | Symptom troubleshooting is completed. |
| 6 | VERIFY IF MALFUNCTION CAUSED BY IGNITION TIMING MALFUNCTION Inspect the ignition timing. (See ENGINE TUNE-UP [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Inspect the following: Spark plug (See SPARK PLUG INSPECTION [SKYACTIV-G 2.0] ). Ignition coil/ion sensor No.1 (See IGNITION COIL INSPECTION [SKYACTIV-G 2.0] ). Ignition coil/ion sensor No.2 Ignition coil/ion sensor No.3 Ignition coil/ion sensor No.4 If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results, then go to Step 17. If there is no malfunction: Go to Step 17. |
| No | Go to the next step. |
| 7 | INSPECT PURGE CONTROL SYSTEM OPERATION Perform the Purge Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results, then go to Step 17. |
| 8 | INSPECT FUEL PRESSURE (HIGH-SIDE) Start the engine and warm it up completely. Access the FUEL_PRES PID using the M-MDS at idle. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the FUEL_PRES PID value approx. 3 MPa {31 kgf/cm 2 , 435 psi}? | Yes | Go to the next step. |
| No | Lower than 3 MPa {31 kgf/cm 2 , 435 psi}: Inspect the following: Fuel leakage at the fuel line and fuel injector Fuel pump Perform the Fuel Pump (Low-pressure Side) Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). High pressure fuel pump (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). Higher than 3 MPa {31 kgf/cm 2 , 435 psi}: Inspect the following: Fuel line and fuel injector restriction Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). High pressure fuel pump (Relief valve clogged) Repair or replace the malfunctioning part according to the inspection results, then go to Step 17. |
| 9 | INSPECT INTAKE-AIR SYSTEM FOR AIR LEAKAGE Inspect for leakage in intake-air system. Is there any leakage? | Yes | Repair or replace the malfunctioning part according to the inspection results, then go to Step 17. |
| No | Go to the next step. |
| 10 | INSPECT RESTRICTION IN VENTILATION HOSE Inspect for restriction in the ventilation hose. Is there any restriction? | Yes | Repair or replace the malfunctioning part according to the inspection results, then go to Step 17. |
| No | Go to the next step. |
| 11 | VERIFY IF MALFUNCTION CAUSE IS CHARCOAL CANISTER Visually inspect the charcoal canister. (See CHARCOAL CANISTER INSPECTION [SKYACTIV-G 2.0] ). Is the charcoal canister damaged? | Yes | Repair or replace the malfunctioning part according to the inspection results, then go to Step 17. (See CHARCOAL CANISTER REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 12 | VERIFY IF MALFUNCTION CAUSED BY LACK OF ENGINE COOLANT Inspect the engine coolant level. (See ENGINE COOLANT LEVEL INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Add engine coolant and verify that there is no engine coolant leakage. (See ENGINE COOLANT REPLACEMENT [SKYACTIV-G 2.0] ). (See ENGINE COOLANT LEAKAGE INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results, then go to Step 17. If there is no malfunction: Go to Step 17. |
| No | Go to the next step. |
| 13 | VERIFY CARBON ACCUMULATION CONDITION IN COMBUSTION CHAMBER Verify carbon accumulation condition in combustion chamber. Has carbon accumulated? | Yes | Repair or replace the malfunctioning part according to the inspection results, then go to Step 17. |
| No | Go to the next step. |
| 14 | INSPECT ENGINE COMPRESSION Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G 2.0] ). Are compression pressures within specification? Specification: Standard: 885 kPa {9.02 kgf/cm 2 ,128 psi} (300 rpm) Minimum: 708 kPa {7.22 kgf/cm 2 ,103 psi} (300 rpm) Maximum difference between cylinders: 150 kPa {1.53 kgf/cm 2 , 21.8 psi} NOTE: Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. | Yes | Go to the next step. |
| No | Inspect the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper intake valve timing Improper exhaust valve timing Repair or replace the malfunctioning part according to the inspection results, then go to Step 17. |
| 15 | INSPECT TWC FOR RESTRICTION Inspect for restriction in the TWC. Is there any restriction? | Yes | Repair or replace the malfunctioning part according to the inspection results, then go to Step 17. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 16 | INSPECT PCV VALVE Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the PCV valve, then go to the next step. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 17 | VERIFY SYMPTOM TROUBLESHOOTING COMPLETED Measure CO, HC, and NOx concentration again. Is CO, HC, and NOx concentration within specification? | Yes | Symptom troubleshooting is completed. |
| No | Repeat the inspection from Step 1. |
| NOTE |
|---|
| If the HC concentration is normal and the CO concentration is excessive, a rich A/F can be considered the cause. If the CO concentration is normal and the HC concentration is excessive, a A/F lean can be considered the cause. If the CO and HC concentration is excessive, incomplete combustion or a rich A/F can be considered the cause. |
| NOTE |
|---|
| Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | INSPECT ENGINE OIL AND RELATED PARTS Inspect the following: Proper dipstick Proper engine oil viscosity Engine oil level Is there any malfunction? | Yes | Service if necessary. Repeat this step. |
| No | Go to the next step. |
| 2 | VISUALLY INSPECT FOR ENGINE OIL LEAKAGE Inspect for engine oil leakage outside of the engine. Is there any leakage? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 3 | INSPECT IF MALFUNCTION CAUSE IS PCV VALVE OR ENGINE INTERNAL PART Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Inspect the internal engine parts such as valves, valve guides, valve stem seals, cylinder head drain passage, and piston rings. Repair or replace the malfunctioning part according to the inspection results, then install the removed parts. |
| 4 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | INSPECT EFFECT OF VEHICLE CONDITION FOR MALFUNCTION Verify how the customer drives the vehicle by asking the customer the following: Engine speed is high and remains high for continuous long periods like when climbing a long steep grade. Is the engine generating excessive heat when driven? | Yes | Explain to the customer that the vehicle is normal and give them advice how to use vehicle and specific example of the conditions in which the engine overheats. |
| No | Go to the next step. |
| 2 | DETERMINE IF MALFUNCTION CAUSE IS A/C SYSTEM OR OTHER Start the engine and run it at idle speed. Turn the A/C switch off. Does the A/C compressor disengaged? | Yes | Go to the next step. |
| No | Perform the symptom troubleshooting "NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY". (See NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [SKYACTIV-G 2.0] ). |
| 3 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 4 | INSPECT ECT SENSOR NO.1 SIGNAL Access the ECT PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Compare the ECT PID and low engine coolant temperature indicator light and high engine coolant temperature warning light operation. Is the ECT PID value same as indicator/warning light readings? | Yes | Go to the next step. |
| No | Inspect the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Replace the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). If there is no malfunction: Perform the instrument cluster symptom troubleshooting "NO.10 LOW ENGINE COOLANT TEMPERATURE INDICATOR LIGHT/HIGH ENGINE COOLANT TEMPERATURE WARNING LIGHT ILLUMINATES OR FLASHES CONTINUOUSLY". (See LOW ENGINE COOLANT TEMPERATURE INDICATOR LIGHT/HIGH ENGINE COOLANT TEMPERATURE WARNING LIGHT ILLUMINATES OR FLASHES CONTINUOUSLY [INSTRUMENT CLUSTER] ). |
| 5 | INSPECT COOLING FAN CONTROL SYSTEM OPERATION Perform the Cooling Fan Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the cooling fan control system operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 6 | INSPECT RELATED PART CONDITION Inspect the following: Engine coolant level Engine coolant performance Water and anti-freeze mixture Radiator condition Collapsed or restricted radiator hoses Radiator pressure cap Coolant overflow system Fan rotational direction Fuses Is there any malfunction? | Yes | Service if necessary. Repeat this step. |
| No | Go to the next step. |
| 7 | INSPECT COOLANT LEAKAGE AT COOLING SYSTEM PART Inspect for leakage at coolant hoses and/or radiator. Is there any leakage? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 8 | INSPECT COOLANT LEAKAGE AT HEATER UNIT Inspect for leakage around heater unit in passenger compartment. Is there any leakage? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 9 | INSPECT DRIVE BELT Inspect the drive belt. (See DRIVE BELT INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the drive belt. (See DRIVE BELT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 10 | INSPECT THERMOSTAT Cool down the engine. Remove the thermostat. (See THERMOSTAT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Inspect the thermostat operation. (See THERMOSTAT INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the thermostat. (See THERMOSTAT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Reinstall the thermostat. (See THERMOSTAT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). The engine coolant temperature and thermostat are normal. Inspect the engine block for leakage or blockage. Repair or replace the malfunctioning part according to the inspection results. |
| 11 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | DETERMINE IF MALFUNCTION CAUSE IS HVAC SYSTEM OR ENGINE Is a customer complaint "Lack of passenger compartment heat" only? | Yes | Inspect the A/C heater system. Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 2 | VERIFY IDLE SPEED Does the engine speed continue at fast idle? | Yes | Perform the symptom troubleshooting "NO.9 FAST IDLE/RUNS ON". (See NO.9 FAST IDLE/RUNS ON [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 3 | INSPECT ECT SENSOR NO.1 SIGNAL Access the ECT PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Compare the ECT PID and low engine coolant temperature indicator light and high engine coolant temperature warning light operation. Is the ECT PID value same as indicator/warning light readings? | Yes | Go to the next step. |
| No | Inspect the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Replace the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). If there is no malfunction: Perform the instrument cluster symptom troubleshooting "NO.10 LOW ENGINE COOLANT TEMPERATURE INDICATOR LIGHT/HIGH ENGINE COOLANT TEMPERATURE WARNING LIGHT ILLUMINATES OR FLASHES CONTINUOUSLY". (See LOW ENGINE COOLANT TEMPERATURE INDICATOR LIGHT/HIGH ENGINE COOLANT TEMPERATURE WARNING LIGHT ILLUMINATES OR FLASHES CONTINUOUSLY [INSTRUMENT CLUSTER] ). |
| 4 | INSPECT COOLING FAN CONTROL SYSTEM OPERATION Perform the Cooling Fan Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Does the cooling fan control system operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 5 | INSPECT THERMOSTAT Cool down the engine. Remove the thermostat. (See THERMOSTAT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Inspect the thermostat operation. (See THERMOSTAT INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the thermostat. (See THERMOSTAT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Reinstall the thermostat, then go to the next step. (See THERMOSTAT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 6 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY EXHAUST COLOR What color is smoke coming from the exhaust system? | Blue | Burning oil is indicated. Go to the next step. |
| White | Water in combustion is indicated. Go to Step 4. |
| Black | Rich fuel mixture is indicated. Go to Step 5. |
| 2 | INSPECT PCV VALVE Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 3 | INSPECT ENGINE INTERNAL PARTS Inspect for the following engine internal parts: Damaged valve guide, stems or valve seals Blocked oil drain passage in cylinder head Piston ring is not seated, seized or worn Damage cylinder bore Is there any malfunction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Engine internal parts are normal. If other driveability symptoms are present: Return to the diagnostic index to service additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). |
| 4 | INSPECT ENGINE FOR ENGINE COOLANT LEAKAGE Does the cooling system hold the coolant pressure? (See ENGINE COOLANT LEAKAGE INSPECTION [SKYACTIV-G 2.0] ). | Yes | Inspect the following: Cylinder head gasket leakage Intake manifold gasket leakage Cracked or porous engine block Repair or replace the malfunctioning part according to the inspection results. If other driveability symptoms are present: Return to the diagnostic index to service additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). |
| No | Inspect for the cause. Repair or replace the malfunctioning part according to the inspection results. |
| 5 | VERIFY CURRENT INPUT SIGNAL STATUS CAUTION: 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 following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). APP1 APP2 ECT IAT MAF MAP TP REL O2S11 O2S12 SHRTFT1 LONGFT1 Monitor the PIDs under the black smoke appeared engine condition. Do the PIDs indicate normal according to engine conditions? | Yes | Go to the next step. |
| No | APP1, APP2 PIDs are not as specified: Inspect the APP sensor. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). ECT PID is not as specified: Inspect the ECT sensor No.1. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). IAT PID is not as specified: Inspect the IAT sensor No. 1. (See INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAF PID is not as specified: Inspect the MAF sensor. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAP PID is not as specified: Inspect the MAP sensor. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). TP REL PID is not as specified: Inspect the TP sensor. (See THROTTLE POSITION (TP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S11, SHRTFT1, LONGFT1 PIDs are not as specified: Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2S12 PID is not as specified: Inspect the HO2S. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. If the malfunction remains: Perform the "INTERMITTENT CONCERN TROUBLESHOOTING" procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [SKYACTIV-G 2.0] ). |
| 6 | INSPECT FUEL INJECTOR OPERATION Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Do the fuel injectors operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 7 | INSPECT INTAKE AIR SYSTEM Inspect the following for intake-air system: Air cleaner restriction Collapsed or restricted air hose Leakage Is there any malfunction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 8 | INSPECT EXHAUST SYSTEM FOR LEAKAGE Visually inspect for exhaust leakage from exhaust manifold. Is there any leakage? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 9 | INSPECT FUEL PRESSURE (HIGH-SIDE) Start the engine and warm it up completely. Access the FUEL_PRES PID using the M-MDS at idle. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the FUEL_PRES PID value approx. 3 MPa {31 kgf/cm 2 , 435 psi}? | Yes | Go to Step 13. |
| No | Lower than 3 MPa {31 kgf/cm 2 ,435 psi}: Inspect the following: Fuel leakage at the fuel line and fuel injector Fuel pump Perform the Fuel Pump (Low-pressure Side) Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). High pressure fuel pump (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to Step 12. Higher than 3 MPa {31 kgf/cm 2 , 435 psi}: Go to the next step. |
| 10 | DETERMINE IF MALFUNCTION CAUSE IS FUEL PRESSURE SENSOR OR HIGH PRESSURE FUEL PUMP Is the vehicle acceleration performance normal? | Yes | Go to the next step. |
| No | Go to Step 12. |
| 11 | INSPECT FUEL PRESSURE SENSOR Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the fuel distributor. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to Step 13. |
| 12 | INSPECT SPILL VALVE CONTROL SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Disconnect the high pressure fuel pump and PCM connectors. Inspect for continuity between high pressure fuel pump terminal A (wiring harness-side) and body ground. Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground. If the malfunction remains: Replace the PCM. (damage to driver in PCM) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 13 | INSPECT FUEL PRESSURE (LOW-SIDE) Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 , 58.8-70.3 psi} | Yes | Go to the next step. |
| No | Inspect the following: Fuel line restriction Fuel filter clogged If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 14 | INSPECT IGNITION SYSTEM OPERATION Perform the Spark Test. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 15 | INSPECT IF MALFUNCTION CAUSE IS ENGINE COMPRESSION OR INJECTOR DRIVER (PCM INTEGRATED) Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G 2.0] ). Are compression pressures within specification? Specification: Standard: 885 kPa {9.02 kgf/cm 2 ,128 psi} (300 rpm) Minimum: 708 kPa {7.22 kgf/cm 2 ,103 psi} (300 rpm) Maximum difference between cylinders: 150 kPa {1.53 kgf/cm 2 , 21.8 psi} NOTE: Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. | Yes | Injector driver malfunction. Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). If the problem remains, overhaul the engine. |
| No | Inspect the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper intake valve timing Improper exhaust valve timing Service if necessary. |
| 16 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
| CAUTION |
|---|
| 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. |
| NOTE |
|---|
| Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | INSPECT FOR MISSING OR LOOSE FUEL FILLER CAP Visually inspect if the fuel filler cap is missing or loose. Is there any malfunction? | Yes | Repair or replace the fuel filler cap. |
| No | Go to the next step. |
| 2 | INSPECT FUEL SYSTEM FOR FUEL LEAKAGE Visually inspect the fuel leakage at the fuel line. Is there any leakage? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 3 | INSPECT VACUUM HOSE CONNECTION Inspect the vacuum hose routing. (See INTAKE-AIR SYSTEM VACUUM HOSE ROUTING DIAGRAM [SKYACTIV-G 2.0] ). Are vacuum hoses routed properly? | Yes | Go to the next step. |
| No | Reconnect the vacuum hose. (See INTAKE-AIR SYSTEM VACUUM HOSE ROUTING DIAGRAM [SKYACTIV-G 2.0] ). |
| 4 | INSPECT PURGE SOLENOID VALVE Inspect the airflow of purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION [SKYACTIV-G 2.0] ). Is the purge solenoid airflow properly? | Yes | Go to the next step. |
| No | Replace the purge solenoid valve. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 5 | INSPECT WHETHER MALFUNCTION IS IN HIGH PRESSURE FUEL PUMP OR CHARCOAL CANISTER Start the engine and warm it up completely. Access the FUEL_PRES PID using the M-MDS at idle. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the FUEL_PRES PID value approx. 3 MPa {31 kgf/cm 2 , 435 psi}? | Yes | Inspect the charcoal canister for fuel saturation. If excess amount of liquid fuel is present: Replace the charcoal canister. (See CHARCOAL CANISTER REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Inspect the fuel pressure sensor and the high pressure fuel pump. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). Replace the fuel distributor and/or the high pressure fuel pump if necessary. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 6 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY IF THERE IS SQUEAL, CLICK, OR CHIRP SOUND Is squeal, click or chirp sound present? | Yes | Inspect the following: Engine oil level Solenoid valves installation Drive belt tension Generator installation Auto tensioner bearing damaged Splash shield or under cover loose Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 2 | VERIFY IF THERE IS RUMBLE OR GRIND SOUND Is rumble or grinding sound present? | Yes | Inspect the following: Drive belt tension Loose parts in engine compartment If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 3 | VERIFY IF THERE IS RATTLE SOUND Is rattle sound present? | Yes | Inspect the location of rattle for loose parts. Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 4 | VERIFY IF THERE IS HISS SOUND Is hiss sound present? | Yes | Inspect the following: Vacuum leakage Spark plug loose Intake-air system leakage Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 5 | VERIFY IF THERE IS RAP OR ROAR SOUND Is rap or roar sound present? | Yes | Inspect the following: Exhaust system installation Intake-air system installation Dynamic damper installation Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 6 | VERIFY IF THERE IS KNOCK SOUND Is knocking noise present? | Yes | Perform the symptom troubleshooting "NO.13 KNOCKING/PINGING-ACCELERATION/CRUISE". (See NO.13 KNOCKING/PINGING-ACCELERATION/CRUISE [SKYACTIV-G 2.0] ). |
| No | If noise comes from engine internal: Inspect the following: Timing chain Tappet noise Electric variable valve timing actuator Hydraulic variable valve timing actuator Engine compression Repair or replace the malfunctioning part according to the inspection results. |
| 7 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY PART INSTALLATION CONDITION Inspect the following components for loose attaching bolts or worn parts: Cooling fan Condenser fan Drive belt and pulley Engine mounts Exhaust system Is there any malfunction? | Yes | Readjust installation position or retighten the suspect parts. Repair or replace the malfunctioning part according to the inspection results for other parts. |
| No | Inspect the following systems: Wheels Transmission and mounts Driveline Suspension Repair or replace the malfunctioning part according to the inspection results. |
| 2 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY PCM, INSTRUMENT CLUSTER AND CLIMATE CONTROL UNIT DTC Retrieve the PCM, instrument cluster and climate control unit DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). (See DTC INSPECTION [INSTRUMENT CLUSTER] ). (See DTC DISPLAY [FULL-AUTO AIR CONDITIONER] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). (See DTC TABLE [INSTRUMENT CLUSTER] ). (See DTC TABLE [FULL-AUTO AIR CONDITIONER] ). |
| No | Go to the next step. |
| 2 | DETERMINE IF MALFUNCTION CAUSE IS A/C RELAY CONTROL SIGNAL OR A/C REQUEST SIGNAL Access the PCM PID ACCS using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Start the engine and idle it. Turn the ACCS PID to ON from OFF using the M-MDS simulation function. Is the magnetic clutch engaged? | Yes | Go to the next step. |
| No | Go to Step 9. |
| 3 | DETERMINE IF MALFUNCTION CAUSE IS REFRIGERANT PRESSURE SENSOR OR OTHER Access the PCM PID AC REQ using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Monitor the AC_REQ PID while turning on and off the air conditioner with switch on the control panel. Is the AC_REQ PID value normal? | Yes | Go to the next step. |
| No | Go to Step 5. |
| 4 | INSPECT REFRIGERANT PRESSURE SENSOR Inspect the refrigerant pressure sensor. (See REFRIGERANT PRESSURE SENSOR INSPECTION [MANUAL AIR CONDITIONER] ). (See REFRIGERANT PRESSURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER] ). Is there any malfunction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Inspect the following: Refrigerant charging amount A/C compressor seized Repair or replace the malfunctioning part according to the inspection results if necessary. |
| 5 | DETERMINE IF MALFUNCTION CAUSE IS EVAPORATOR TEMPERATURE SENSOR OR OTHER Measure the voltage at the climate control unit terminal H (wiring harness-side). (vehicles with manual air conditioner) Measure the voltage at the climate control unit terminal 1F (wiring harness-side). (vehicles with full-auto air conditioner) Is the voltage normal? (See CLIMATE CONTROL UNIT INSPECTION [MANUAL AIR CONDITIONER] ). (See CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER] ). | Yes | Vehicles with manual air conditioner: Go to Step 7. Vehicles with full-auto air conditioner: Go to Step 9. |
| No | Go to the next step. |
| 6 | INSPECT EVAPORATOR TEMPERATURE SENSOR Inspect the evaporator temperature sensor. (See EVAPORATOR TEMPERATURE SENSOR INSPECTION [MANUAL AIR CONDITIONER] ). (See EVAPORATOR TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER] ). Is there any malfunction? | Yes | Replace the evaporator temperature sensor. (See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER] ). (See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER] ). |
| No | Inspect for short or open circuit between the following terminals: Evaporator temperature sensor terminal B-Climate control unit terminal H (vehicles with manual air conditioner) Evaporator temperature sensor terminal A-Climate control unit terminal F (vehicles with manual air conditioner) Evaporator temperature sensor terminal B-Climate control unit terminal 1F (vehicles with full-auto air conditioner) Evaporator temperature sensor terminal A-Climate control unit terminal 1X (vehicles with full-auto air conditioner) Repair or replace the suspected wiring harness if necessary. |
| 7 | DETERMINE IF MALFUNCTION CAUSE IS INSTRUMENT CLUSTER OR OTHER Verify the information display indication of A/C system while turning on and off the air conditioner with switch on the control panel. Does the information display indicate properly? | Yes | Instrument cluster does not receive the A/C request signal from climate control unit or transmit it to PCM. Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION ). |
| No | Go to the next step. |
| 8 | DETERMINE IF MALFUNCTION CAUSE IS A/C REQUEST SIGNAL RELATED WIRING HARNESS OR CLIMATE CONTROL UNIT Switch the ignition to off. Inspect for open or short circuit between climate control unit terminal B (wiring harness-side) and instrument cluster terminal L (wiring harness-side). Is there any malfunction? | Yes | Repair or replace the suspected wiring harness. |
| No | A/C switch malfunction, or climate control unit can not determine the A/C request or transmit the A/C request signal. Replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER] ). |
| 9 | DETERMINE IF MALFUNCTION CAUSE IS A/C CONTROL SIGNAL OR MAGNETIC CLUTCH Start the engine and idle it. Access the PCM PID ACCS using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Turn the ACCS PID to ON from OFF using the M-MDS simulation function. Measure the voltage at the magnetic clutch terminal A (wiring harness-side). Is the voltage 10.5 V or more? | Yes | Go to the next step. |
| No | Go to Step 11. |
| 10 | INSPECT IF MALFUNCTION CAUSE IS MAGNETIC CLUTCH OR MAGNETIC CLUTCH GROUND CIRCUIT Switch the ignition to off. Disconnect the magnetic clutch connector. Inspect for continuity between magnetic clutch terminal A (part-side) and body ground. Is there continuity? | Yes | Inspect the magnetic clutch. (See MAGNETIC CLUTCH INSPECTION [MANUAL AIR CONDITIONER] . (See MAGNETIC CLUTCH INSPECTION [FULL-AUTO AIR CONDITIONER] ). Replace the magnetic clutch if necessary. |
| No | Inspect the A/C compressor, (poor contact to ground) If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the A/C compressor, (internal circuit open) |
| 11 | INSPECT A/C RELAY Switch the ignition to off. Remove the A/C relay. Inspect the A/C relay. (See RELAY INSPECTION ). Is there any malfunction? | Yes | Replace the A/C relay. |
| No | Go to the next step. |
| 12 | INSPECT A/C RELAY CONTROL CIRCUIT FOR OPEN CIRCUIT A/C relay is removed. Disconnect the PCM connector. Inspect for continuity between A/C relay terminal E (wiring harness-side) and PCM terminal 2AF (wiring harness-side). Is there continuity? | Yes | Inspect for continuity between the following: Front body control module (FBCM) terminal 1C-A/C relay terminal A Battery positive terminal-A/C relay terminal C A/C relay terminal D-Magnetic clutch terminal A Repair or replace the wiring harness for a possible open circuit. |
| No | Repair or replace the wiring harness for a possible open circuit. |
| 13 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY PCM, INSTRUMENT CLUSTER AND CLIMATE CONTROL UNIT DTC Retrieve the PCM, instrument cluster and climate control unit DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). (See DTC INSPECTION [INSTRUMENT CLUSTER] ). (See DTC DISPLAY [FULL-AUTO AIR CONDITIONER] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). (See DTC TABLE [INSTRUMENT CLUSTER] ). (See DTC TABLE [FULL-AUTO AIR CONDITIONER] ). |
| No | Go to the next step. |
| 2 | DETERMINE IF MALFUNCTION CAUSE IS MAGNETIC CLUTCH OR OTHER Start the engine and idle it. Turn the A/C switch on. Remove the A/C relay. Does the magnetic clutch disengage? | Yes | Go to Step 5. |
| No | Go to the next step. |
| 3 | INSPECT IF MALFUNCTION CAUSE IS MAGNETIC CLUTCH POWER SUPPLY CIRCUIT OR MAGNETIC CLUTCH A/C relay is removed. Switch the ignition to off. Disconnect the magnetic clutch connector. Start the engine and idle it. Does the magnetic clutch disengage? | Yes | Inspect for short to power supply circuit between magnetic clutch terminal A and A/C relay terminal D. Repair or replace the wiring harness for a possible short to power supply if necessary. |
| No | Go to the next step. |
| 4 | INSPECT MAGNETIC CLUTCH CLEARANCE Verify the magnetic clutch clearance. (See MAGNETIC CLUTCH ADJUSTMENT [MANUAL AIR CONDITIONER] ). (See MAGNETIC CLUTCH ADJUSTMENT [FULL-AUTO AIR CONDITIONER] ). Is the magnetic clutch clearance normal? | Yes | Inspect the magnetic clutch to see if it is stuck. (See MAGNETIC CLUTCH INSPECTION [MANUAL AIR CONDITIONER] . (See MAGNETIC CLUTCH INSPECTION [FULL-AUTO AIR CONDITIONER] ). Replace the magnetic clutch if necessary. (See MAGNETIC CLUTCH DISASSEMBLY/ASSEMBLY [MANUAL AIR CONDITIONER] ). (See MAGNETIC CLUTCH DISASSEMBLY/ASSEMBLY [FULL-AUTO AIR CONDITIONER] ). |
| No | Adjust the magnetic clutch clearance. (See MAGNETIC CLUTCH ADJUSTMENT [MANUAL AIR CONDITIONER] ). (See MAGNETIC CLUTCH ADJUSTMENT [FULL-AUTO AIR CONDITIONER] ). |
| 5 | DETERMINE IF MALFUNCTION CAUSE IS A/C RELAY CONTROL SIGNAL OR A/C REQUEST SIGNAL Access the PCM PID ACCS using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Monitor the PID ACCS while turning on and off the air conditioner with switch on the control panel. Is the ACCS PID value always ON? | Yes | Climate control unit always transmits A/C request signal. Replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER] ). (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER] ). |
| No | Go to the next step. |
| 6 | INSPECT A/C RELAY Inspect the A/C relay. (See RELAY INSPECTION ). Is there any malfunction? | Yes | Replace the A/C relay. |
| No | Inspect for short to ground circuit between A/C relay terminal E and PCM terminal 2AF. Repair or replace the wiring harness for a possible short to ground if necessary. |
| 7 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | DETERMINE IF MALFUNCTION CAUSE IS A/C SYSTEM OR OTHER Turn the A/C switch off. Does the magnetic clutch disengage? | Yes | Go to the next step. |
| No | Perform the symptom troubleshooting "NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY". (See NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [SKYACTIV-G 2.0] ). |
| 2 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 3 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY IF THERE IS POOR DRIVEABILITY OR EXHAUST GAS RELATED MALFUNCTION Are any driveability or exhaust smoke concerns present? | Yes | Go to the applicable symptom troubleshooting. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 2 | INSPECT RELATED PART CONDITION Inspect the following: Electrical connections Vacuum lines Fuel quality Is there any malfunction? | Yes | Service if necessary. Repeat this step. |
| No | Go to the next step. |
| 3 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 4 | INSPECT FUEL PRESSURE (HIGH-SIDE) Start the engine and warm it up completely. Access the FUEL_PRES PID using the M-MDS at idle. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Is the FUEL_PRES PID value approx. 3 MPa {31 kgf/cm 2 , 435 psi}? | Yes | Go to Step 8. |
| No | Lower than 3 MPa {31 kgf/cm 2 , 435 psi}: Inspect the following: Fuel leakage at the fuel line and fuel injector Fuel pump Perform the Fuel Pump (Low-pressure Side) Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). High pressure fuel pump (See HIGH PRESSURE FUEL PUMP INSPECTION [SKYACTIV-G 2.0] ). If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Go to Step 7. Higher than 3 MPa {31 kgf/cm 2 , 435 psi}: Go to the next step. |
| 5 | DETERMINE IF MALFUNCTION CAUSE IS FUEL PRESSURE SENSOR OR HIGH PRESSURE FUEL PUMP Is the vehicle acceleration performance normal? | Yes | Go to the next step. |
| No | Go to Step 7. |
| 6 | INSPECT FUEL PRESSURE SENSOR Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the fuel distributor. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to Step 8. |
| 7 | INSPECT SPILL VALVE CONTROL SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Disconnect the high pressure fuel pump and PCM connectors. Inspect for continuity between high pressure fuel pump terminal A (wiring harness-side) and body ground. Is there continuity? | Yes | Repair or replace the wiring harness for a possible short to ground. If the malfunction remains: Replace the PCM. (damage to driver in PCM) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 8 | INSPECT FUEL PRESSURE (LOW-SIDE) Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. Measure the low side fuel pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 , 58.8-70.3 psi} | Yes | Go to the next step. |
| No | Inspect the following: Fuel line restriction Fuel filter clogged If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 9 | DETERMINE IF MALFUNCTION CAUSE IS CHARCOAL CANISTER OR FUEL TANK VENT SYSTEM Inspect the charcoal canister for fuel saturation. (See CHARCOAL CANISTER INSPECTION [SKYACTIV-G 2.0] ). Is there excess amount of liquid fuel present in canister? | Yes | Replace the charcoal canister. (See CHARCOAL CANISTER REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Inspect the fuel tank vent system. If the fuel tank vent system is normal: Suggest trying a different brand since sulfur content can vary in different fuels. If fuel tank vent system is not normal: Repair or replace the malfunctioning part according to the inspection results. |
| 10 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | ACTION |
|---|
| 1 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 2 | DETERMINE IF MALFUNCTION CAUSE IS NON-RETURN VALVE Remove the fuel-filler pipe. Make sure non-return valve is installed properly. Inspect the non-return valve operation. Is there any malfunction? | Yes | Non-return valve is installed improperly: Reinstall the non-return valve to proper position. Non-return valve does not operate properly: Replace the non-return valve. |
| No | U.S.A. And CANADA Go to the next step. Except U.S.A. And CANADA Go to Step 4. |
| 3 | DETERMINE IF MALFUNCTION CAUSE IS PRESSURE CONTROL VALVE Inspect the pressure control valve. (See PRESSURE CONTROL VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the pressure control valve. (See FUEL TANK REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Inspect the following: Improper use of fuel nozzle Inadequate fuel filling speed Repair or replace the malfunctioning part according to the inspection results. |
| 4 | DETERMINE IF MALFUNCTION CAUSE IS CHECK VALVE Inspect the check valve. (See CHECK VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the check valve. (See CHECK VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Inspect the following: Improper use of fuel nozzle Inadequate fuel filling speed Repair or replace the malfunctioning part according to the inspection results. |
| 5 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | ACTION |
|---|
| 1 | VERIFY PCM DTC Retrieve any DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 2 | DETERMINE IF MALFUNCTION CAUSE IS NONRETURN VALVE Remove the fuel-filler pipe. Make sure non-return valve is installed properly. Inspect the non-return valve operation. Is there any malfunction? | Yes | Nonreturn valve is installed improperly: Reinstall the non-return valve to proper position. Nonreturn valve does not operate properly: Replace the non-return valve. |
| No | U.S.A. And CANADA Go to the next step. Except U.S.A. And CANADA Go to Step 4. |
| 3 | DETERMINE IF MALFUNCTION CAUSE IS PRESSURE CONTROL VALVE Inspect the pressure control valve. (See PRESSURE CONTROL VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the pressure control valve. (See FUEL TANK REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Inspect the following: Improper use of fuel nozzle Inadequate fuel filling speed Repair or replace the malfunctioning part according to the inspection results. |
| 4 | DETERMINE IF MALFUNCTION CAUSE IS CHECK VALVE Inspect the check valve. (See CHECK VALVE INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Replace the check valve. (See CHECK VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Inspect the following: Improper use of fuel nozzle Inadequate fuel filling speed Repair or replace the malfunctioning part according to the inspection results. |
| 5 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
DIAGNOSTIC PROCEDURE DESCRIPTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|
| 1 | VERIFY SPARK PLUG CONDITION Remove all spark plugs. (See SPARK PLUG REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Inspect the spark plug. (See SPARK PLUG INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Specific plug is wet or covered with carbon: Go to the next step. Specific plug looks grayish white: Go to Step 7. All plugs are wet or covered with carbon: Go to Step 9. All plugs look grayish white: Go to Step 15. |
| No | Symptom troubleshooting completed. |
| 2 | DETERMINE IF MALFUNCTION CAUSE IS ENGINE OIL LOSS OR OTHER Are the spark plugs wet/covered with carbon from the engine oil? | Yes | Inspect all areas related to oil, working up and down. Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 3 | INSPECT SPARK PLUG Inspect the spark plugs for the following: Air gap Cracked insulator Heat range Worn electrode Is there any malfunction? | Yes | Replace the spark plug. (See SPARK PLUG REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 4 | INSPECT ENGINE COMPRESSION Inspect the compression pressure at the suspected cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G 2.0] ). Are compression pressures within specification? Specification: Standard: 885 kPa {9.02 kgf/cm 2 ,128 psi} (300 rpm) Minimum: 708 kPa {7.22 kgf/cm 2 ,103 psi} (300 rpm) Maximum difference between cylinders: 150 kPa {1.53 kgf/cm 2 , 21.8 psi} NOTE: Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 5 | INSPECT IGNITION SYSTEM OPERATION Reinstall all spark plugs. (See SPARK PLUG REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Perform the Spark Test at the suspected cylinder. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Is a strong blue spark visible (compare with normal cylinder)? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 6 | INSPECT FUEL LINE PRESSURE Inspect the fuel line pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 , 58.8-70.3 psi} | Yes | Inspect the fuel injector for the following: Injection volume Leakage Open or short circuit in injector Repair or replace the malfunctioning part according to the inspection results. |
| No | Zero or low: Inspect the fuel pump relay and the fuel pump circuit. (See RELAY INSPECTION ). Inspect the fuel line for restriction. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (Pressure regulator or fuel pump malfunction) (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). High: Replace the fuel pump unit. (Pressure regulator malfunction) (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 7 | INSPECT SPARK PLUG Inspect the spark plug for the following: Air gap Heat range Is there any malfunction? | Yes | Replace the spark plug. (See SPARK PLUG REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 8 | INSPECT FUEL INJECTOR OPERATION Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Do the fuel injectors operate properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 9 | INSPECT AIR CLEANER ELEMENT Is the air cleaner element clean? | Yes | Go to the next step. |
| No | Replace the air cleaner element. |
| 10 | VERIFY CURRENT INPUT SIGNAL STATUS Access the following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). ECT MAF O2S11 (When engine can be started) O2S12 (When engine can be started) Are the PIDs normal? | Yes | Go to the next step. |
| No | ECT PID is not as specified: Inspect for an intermittent open circuit of the ECT sensor No.1 and the related wiring harness. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAF PID is not as specified: Inspect for an intermittent open circuit of the MAF sensor and the related wiring harness. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2511 PID is not as specified: Inspect for an intermittent open circuit of the A/F sensor and the related wiring harness. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2512 PID is not as specified: Inspect for an intermittent open circuit of the HO2S and the related wiring harness. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. |
| 11 | INSPECT PURGE CONTROL SYSTEM OPERATION Perform the Purge Control System Inspection when the engine can be started. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 12 | INSPECT IGNITION SYSTEM OPERATION Perform the Spark Test. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 13 | INSPECT ENGINE COMPRESSION Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [SKYACTIV-G 2.0] ). Are compression pressures within specification? Specification: Standard: 885 kPa {9.02 kgf/cm 2 ,128 psi} (300 rpm) Minimum: 708 kPa {7.22 kgf/cm 2 ,103 psi} (300 rpm) Maximum difference between cylinders: 150 kPa {1.53 kgf/cm 2 , 21.8 psi} NOTE: Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning part according to the inspection results. |
| 14 | INSPECT FUEL LINE PRESSURE Inspect the fuel line pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 , 58.8-70.3 psi} | Yes | Visually inspect for deformed exhaust system parts. Repair or replace the malfunctioning part according to the inspection results. |
| No | Zero or low: Inspect the fuel pump relay and the fuel pump circuit. (See RELAY INSPECTION ). Inspect the fuel line for restriction. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (Pressure regulator or fuel pump malfunction) (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). High: Replace the fuel pump unit. (Pressure regulator malfunction) (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 15 | VERIFY CURRENT INPUT SIGNAL STATUS Access the following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0] ). ECT MAF O2S11 (When engine can be started) O2S12 (When engine can be started) Are the PIDs normal? | Yes | Go to the next step. |
| No | ECT PID is not as specified: Inspect for an intermittent open circuit of the ECT sensor No.1 and the related wiring harness. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0] ). MAF PID is not as specified: Inspect for an intermittent open circuit of the MAF sensor and the related wiring harness. (See MASS AIR FLOW (MAF) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2511 PID is not as specified: Inspect for an intermittent open circuit of the A/F sensor and the related wiring harness. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-G 2.0] ). O2512 PID is not as specified: Inspect for an intermittent open circuit of the HO2S and the related wiring harness. (See HEATED OXYGEN SENSOR (HO2S) INSPECTION [SKYACTIV-G 2.0] ). Repair or replace the malfunctioning part according to the inspection results. |
| 16 | INSPECT INTAKE-AIR SYSTEM FOR AIR SUCTION If the engine cannot be started: Inspect the intake air system for air leakage. If the engine can be started: Perform the Intake Manifold Vacuum Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G 2.0] ). Is air being sucked in from intake air system? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. |
| 17 | INSPECT FUEL LINE PRESSURE Inspect the fuel line pressure. (See FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.0] ). Is the low side fuel pressure within specification? Specification: 405-485 kPa {4.13-4.94 kgf/cm 2 ,58.8-70.3 psi} | Yes | Inspect the PCM ground condition. Repair or replace the malfunctioning part according to the inspection results. |
| No | Zero or low: Inspect the fuel pump relay and the fuel pump circuit. (See RELAY INSPECTION ). Inspect the fuel line for restriction. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Replace the fuel pump unit. (Pressure regulator or fuel pump malfunction) (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). High: Replace the fuel pump unit. (Pressure regulator malfunction) (See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 18 | Verify the test results. If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0] ). If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting is completed. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest. |
| NOTE |
|---|
| Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. |
| NOTE |
|---|
| Because the SKYACTIV-G 2.0 retards the intake valve closing timing, compression pressure is low. |
DIAGNOSTIC PROCEDURE DESCRIPTION
Inspection Method for Sensors
- Connect the M-MDS to the DLC-2.
- Switch the ignition ON (engine off or on). NOTE: If the engine starts and runs, perform the following steps during idle.
- Access the PIDs for the switch you are inspecting.
- Shake the sensor slightly with your finger. If the PID value is unstable or a malfunction occurs, check for a poor connection or a poorly mounted sensor or both.
Scheme 95
Scheme 95: Inspection Method for Actuators or Relays
- Connect the M-MDS to the DLC-2.
- Switch the ignition ON (engine off or on). NOTE: If engine starts and runs, perform the following steps during idling.
- Prepare the output state control function for actuators or relays that you are inspecting.
- Shake the actuator or relay with your finger for 3 s after the output state control function is activated. If a variable click sound is heard, check for a poor connection or a poorly mounted actuator or both, or the relay. NOTE: Shake the relays too strongly may result in open circuits. see scheme 17: Shaking Actuator Or Relay Using Your Finger
Intake Manifold Vacuum Inspection
- Verify the air intake hoses are installed properly.
- Start the engine and let it idle.
- Disconnect the vacuum hose between the intake manifold and purge solenoid valve from the intake manifold side.
- Connect a vacuum gauge to the intake manifold and measure the intake manifold vacuum. If not within specification, inspect the following: Specification -60.0 kPa {-450 mmHg, -17.7 inHg} NOTE: Air suction can be located by engine speed change when lubricant is sprayed on the area where suction is occurring. Check the following places: Air suction at throttle body, charge air cooler, intake manifold and PCV valve installation points Engine compression (See «COMPRESSION INSPECTION [SKYACTIV-G 2.0]»(ref-615399-S31950252172014051000000) ).
Electric Variable Valve Timing Driver Control System Inspection
- Connect the M-MDS to the DLC-2.
- Perform the KOER self test. (See «KOEO/KOER SELF TEST [SKYACTIV-G 2.0]»(ref-615394-S31383143262014051000000) ).
- Verify that DTC P0010:00 or P1380:00 is not displayed. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ). If DTC P0010:00 or P1380:00 is displayed, perform the DTC inspection. (See «DTC P0010:00 [SKYACTIV-G 2.0]»(ref-615394-S01125796802014051000000) ). (See «DTC P1380:00 [SKYACTIV-G 2.0]»(ref-615394-S38772643932014051000000) ).
- Perform the Drive Mode 03 (Variable Valve Timing, A/F Sensor Heater, HO2S Heater, A/F Sensor, HO2S and TWC Repair Verification Drive Mode). (See «OBD-II DRIVE MODE [SKYACTIV-G 2.0]»(ref-615394-S01816091842014051000000) ).
- Verify that DTC P0011:00 or P0012:00 is not displayed. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ). If DTC P0011:00 or P0012:00 is displayed, perform the DTC inspection. (See «DTC P0011:00 [SKYACTIV-G 2.0]»(ref-615394-S09934244632014051000000) ). (See «DTC P0012:00 [SKYACTIV-G 2.0]»(ref-615394-S11479835082014051000000) ).
- Access the following PCM PIDs using the M-MDS. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ). VT_IN_ACT VT_IN_DES CAUTION: 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.
- Accelerate and decelerate the vehicle, and drive at normal speed, and verify that the data monitor item VT_IN_ACT value changes in conjunction with the VT_IN_DES value. If this change cannot be verified, replace the electric variable valve timing motor/driver. (See «ELECTRIC VARIABLE VALVE TIMING MOTOR/DRIVER REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615399-S26956923822014051000000) ).
| Monitor item (Definition) | Unit/Condition | Condition/Specification (Reference) |
|---|
| VT_IN_ACT | 0 | Displays the actual intake valve timing |
| VT_IN_DES | 0 | Displays the desired intake valve timing |
Engine Oil Solenoid Valve Control System Inspection
- Connect the M-MDS to the DLC-2.
- Perform the KOER self test. (See «KOEO/KOER SELF TEST [SKYACTIV-G 2.0]»(ref-615394-S31383143262014051000000) ).
- Verify that DTC P06DA:00 is not displayed. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ). If DTC P06DA:00 is displayed, perform the DTC inspection. (See «DTC P06DA:00 [SKYACTIV-G 2.0]»(ref-615394-S18448793262014051000000) ).
- Inspect the engine oil pressure. (See «OIL PRESSURE INSPECTION [SKYACTIV-G 2.0]»(ref-615400-S20814735222014051000000) ). If the engine oil pressure is not as specified, repair or replace the malfunctioning part according to the inspection results
- Access the following PCM PIDs using the M-MDS. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ). OIL_P_SOL RPM ECT
- With the engine coolant temperature at 98°C , increase the engine speed to 4,000 rpm or higher , and verify that the oil pressure gauge value changes when the data monitor item OIL_P_SOL value is changed from ON to OFF. If the oil pressure gauge value change cannot be verified, inspect the engine oil solenoid valve. (Perform the Engine Oil Solenoid Valve Operation Inspection). (See «ENGINE OIL SOLENOID VALVE INSPECTION [SKYACTIV-G 2.0]»(ref-615400-S26537884972014051000000) ).
| Monitor item (Definition) | Unit/Condition | Condition/Specification (Reference) |
|---|
| OIL_P_SOL | OFF/ON | ECT below 98°C {208°F} and engine speed below 4,000 rpm: On ECT above 98°C {208°F} or engine speed above 4,000 rpm: Off |
| RPM | RPM | Displays the engine speed |
| ECT 1 | °C, °F | Displays the ECT |
| V | ECT is 20°C {68°F}: approx. 3.10 V ECT is 40°C {104°F}: approx. 2.16 V ECT is 60°C {140°F}: approx. 1.40 V ECT is 80°C {176°F}: approx. 0.87 V ECT is 100°C {212°F}: approx. 0.54 V |
Engine coolant temperature compensation inspection
- Connect the M-MDS to the DLC-2.
- Select the following PIDs: (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ). ECT IAT RPM
- Verify that the engine is cold, then start the engine.
- Verify that the engine speed decreases as the engine warms up. If the engine speed does not decrease or decreases slowly, inspect the following: ECT sensor No.1 and related wiring harness (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0]»(ref-615396-S00008921182014051000000) ). Throttle body and related wiring harness (See «THROTTLE BODY INSPECTION [SKYACTIV-G 2.0]»(ref-615404-S02942467062014051000000) ).
| Monitor item (Definition) | Unit/Condition | Condition/Specification (Reference) |
|---|
| ECT | °C, °F | Displays the ECT |
| V | ECT is 20°C {68°F}: approx. 3.10 V ECT is 40°C {104°F}: approx. 2.16 V ECT is 60°C {140°F}: approx. 1.40 V ECT is 80°C {176°F}: approx. 0.87 V ECT is 100°C {212°F}: approx. 0.54 V |
| IAT | °C, °F | Displays the IAT (No. 1) |
| V | IAT is 20°C {68°F}: approx. 2.64 V IAT is 40°C {104°F}: approx. 1.80 V IAT is 60°C {140°F}: approx. 1.14 V |
| RPM | RPM | Displays the engine speed |
Load compensation inspection
- Start the engine and let it idle.
- Connect the M-MDS to the DLC-2.
- Verify that DTC P0506:00 or P0507:00 is not displayed. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ). If DTC P0506:00 or P0507:00 is displayed, perform the DTC inspection. (See «DTC P0506:00 [SKYACTIV-G 2.0]»(ref-615394-S24166487212014051000000) ). (See «DTC P0507:00 [SKYACTIV-G 2.0]»(ref-615394-S02663693502014051000000) ).
- Select the RPM PID. NOTE: Excludes temporary idle speed drop just after the loads are turned on.
- Verify that the engine speed is within specification under each load condition. If the load condition is not as specified, inspect the following: A/C switch and related wiring harness system (A/C request signal is always on or off) (See «NO.23 A/C DOES NOT WORK SUFFICIENTLY [SKYACTIV-G 2.0]»(ref-615397-S01635263582014051000000) ). (See «NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [SKYACTIV-G 2.0]»(ref-615397-S42936995222014051000000) ). Electrical load Charging system (See «BATTERY INSPECTION [SKYACTIV-G 2.0]»(ref-615412-S10301123762014051000000) ). (See «GENERATOR INSPECTION [SKYACTIV-G 2.0]»(ref-615412-S18794963472014051000000) ). Idle-up speed (MTX: Neutral position, ATX: P, N position) No load: 500-600 rpm (MTX), 550-650 rpm (ATX) A/C on: 650-800 rpm Electrical loads on: 600-750 rpm
| Monitor item (Definition) | Unit/Condition | Condition/Specification (Reference) |
|---|
| RPM | RPM | Displays the engine speed |
Fuel Cut Control System Inspection
Note. This inspection has to be performed after the Fuel Injector Operation Inspection.
If data monitor function of M-MDS is used
- Warm up the engine and idle it.
- Connect the M-MDS to the DLC-2.
- Select the RPM and the FUELPW PIDs. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ).
- Monitor both PIDs while performing the following steps: Depress the accelerator pedal and increase the RPM PID to 4,000 rpm. Quickly release the accelerator pedal (brake pedal is not depressed) and verify that the FUELPW PID is 0 msec , and 2-5 msec when the RPM PID drops below 1,200 rpm. If not as specified, inspect the following: ECT sensor No.1 and related wiring harness (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0]»(ref-615396-S00008921182014051000000) ).
| Monitor item (Definition) | Unit/Condition | Condition/Specification (Reference) |
|---|
| RPM | RPM | Displays the engine speed |
| FUELPW | Sec | Idle (after warm up): approx. 1.4 ms Racing (engine speed is 2,000 rpm ): approx. 1.1 ms Racing (engine speed is 4,000 rpm ): approx. 1.0 ms |
If data monitor function of M-MDS is not used
- Warm up the engine and idle it.
- Measure the fuel injector control signal wave profile using the oscilloscope while performing the following steps: Depress the accelerator pedal and increase the engine speed to 4,000 rpm. Quickly release the accelerator pedal (brake pedal is not depressed) and verify that the wave profile constant B+ , and the wave appears when the engine speed drops below 1,200 rpm. (See «PCM INSPECTION [SKYACTIV-G 2.0]»(ref-615396-S32068462542014051000000) ). If not as specified, inspect the following: ECT sensor No.1 and related wiring harness (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0]»(ref-615396-S00008921182014051000000) ).
Fuel Pump (Low-pressure Side) Control System Inspection
If simulation function of M-MDS is used
- Connect the M-MDS to the DLC-2.
- Switch the ignition ON (engine off).
- Select the FP PID. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ).
- Turn the fuel pump relay from off to on and inspect if the operation sound of the fuel pump relay is heard. If no operation sound is heard, inspect the fuel pump relay. (See «RELAY INSPECTION»(ref-615398-S18271849862014051000000) ). If the fuel pump relay is normal, inspect the following: Wiring harness and connectors (Ignition switch-Fuel pump relay-PCM terminal 2AQ)
If simulation function of M-MDS is not used
- Crank the engine and verify that the fuel pump relay operation sound is heard.
- If the operation sound is not heard, inspect the following: Fuel pump relay (See «RELAY INSPECTION»(ref-615398-S18271849862014051000000) ). Wiring harness and connectors (Ignition switch-Fuel pump relay-PCM terminal 2AQ)
Spark Test
- Disconnect the fuel pump relay and fuel injector relay.
- Verify that each ignition coil and connector is connected properly.
- Inspect the ignition system in the following procedure: WARNING: High voltage in the ignition system can cause strong electrical shock which can result in serious injury. Avoid direct contact to the vehicle body during the following spark test.
| STEP | INSPECTION | ACTION |
|---|
| 1 | Disconnect the ignition coils from the spark plugs. Remove the spark plugs. (See SPARK PLUG REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). Verify that the spark plugs do not have carbon deposits. Is there any malfunction? | Yes | Perform no-load racing at 4,000 rpm for 2 min, 2 times to burn off the carbon deposits. Repeat this step. |
| No | Go to the next step. |
| 2 | Inspect the spark plugs for damage, wear, and proper plug gap. Is there any malfunction? | Yes | Re-gap or replace the spark plugs, then go to the next step. (See SPARK PLUG REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Go to the next step. |
| 3 | Reconnect the spark plugs to the ignition coil. Ground the spark plugs to the engine. Is a strong blue spark visible at each cylinder while cranking the engine? | Yes | Ignition system is normal. |
| No | Some cylinders do not spark: Go to the next step. All cylinders do not spark: Go to Step 5. |
| 4 | Switch the ignition to off. Inspect the wiring harness between the following terminals (wiring harness-side) for an open or short circuit: Ignition coil/ion sensor No.1 terminal B-PCM terminal 1AY Ignition coil/ion sensor No.2 terminal B-PCM terminal 1AT Ignition coil/ion sensor No.3 terminal B-PCM terminal 1AO Ignition coil/ion sensor No.4 terminal B-PCM terminal 1AJ Is there any malfunction? | Yes | Repair or replace the suspected wiring harness. |
| No | Inspect the ignition coil. (See IGNITION COIL INSPECTION [SKYACTIV-G 2.0] ). Replace the ignition coil/ion sensor. (See IGNITION COIL/ION SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| 5 | Switch the ignition to off. Disconnect the ignition coil/ion sensor connectors. Switch the ignition ON (engine off or on). Measure the voltage at each ignition coil/ion sensor terminal A (wiring harness-side). Is the voltage B+ ? | Yes | Go to the next step. |
| No | Inspect for power supply circuit in wiring harness between ignition switch and ignition coils. Repair or replace the wiring harness for a possible short to power supply. |
| 6 | Switch the ignition to off. Inspect for continuity between terminal D (wiring harness-side) in each ignition coils and body ground. Is there continuity? | Yes | Go to the next step. |
| No | Inspect the connection of PCM ground point. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. If there is no malfunction: Repair or replace the wiring harness for a possible open circuit. Repeat from Step 1. |
| 7 | Inspect the connection of PCM and ignition coil/ion sensor connectors. Does the PCM connector or ignition coil/ion sensor connectors have poor connection? | Yes | Repair or replace the connector. Repeat from Step 1. |
| No | Go to the next step. |
| 8 | Inspect the CKP sensor and crankshaft pulley. (See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [SKYACTIV-G 2.0] ). Is there any malfunction? | Yes | Repair or replace the malfunctioning part according to the inspection results. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0] ). |
| No | Inspect for an open or short circuit in wiring harness and connector of the CKP sensor. Repair or replace the malfunctioning part according to the inspection results. |
Purge Control System Inspection
If simulation function of M-MDS is used
- Start the engine.
- Disconnect the vacuum hose between the purge solenoid valve and the charcoal canister.
- Put a finger to the purge solenoid valve and verify that there is no vacuum applied when the engine is cold. If there is a vacuum, inspect the following: Wiring harness and connectors (Purge solenoid valve-PCM terminal 1AI) Purge solenoid valve (stuck open) (See «PURGE SOLENOID VALVE INSPECTION [SKYACTIV-G 2.0]»(ref-615405-S17725918502014051000000) ).
- Connect the M-MDS to the DLC-2 and verify that DTC P0443:00 is displayed. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ). Perform the DTC inspection. (See «DTC P0443:00 [SKYACTIV-G 2.0]»(ref-615394-S28083405332014051000000) ).
- Select the EVAPCP PID.
- Increase the duty value of the purge solenoid valve to 50 % and inspect if the operation sound of the valve is heard. If the operation sound is heard, inspect for loose or damaged vacuum hoses. (Intake manifold-Purge solenoid valve-Charcoal canister) If the operation sound is not heard, perform the purge solenoid valve inspection. (See «PURGE SOLENOID VALVE INSPECTION [SKYACTIV-G 2.0]»(ref-615405-S17725918502014051000000) ).
- Warm up the engine to normal operating temperature.
- Monitor the EVAPCP PID using the M-MDS, and drive the vehicle approx. 2000 rpm for 30 s or more. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ). If the EVAPCP PID is 0 % , inspect the following PIDs: MAF, APP1, APP2, TP REL and LOAD PIDs
| Monitor item (Definition) | Unit/Condition | Condition/Specification (Reference) |
|---|
| EVAPCP | % | Racing (engine speed is 2,000 rpm ): 4.5-56 % Racing (engine speed is 4,000 rpm ): approx. 56 % |
| MAF | G/sec | Displays the MAF |
| V | Switch the ignition to ON (MAF: 0.59 g/s {0.078 lb/min}): approx. 0.72 V Idle (after warm up) (MAF: 2.17 g/s {0.287 lb/min}): approx. 0.86 V Racing (engine speed is 2,000 rpm ) (MAF: 4.73 g/s {0.626 lb/min}): approx. 1.07 V |
| APP1 | % | Accelerator pedal released: approx. 16 % Accelerator pedal depressed: approx. 80 % |
| V | Accelerator pedal released: approx. 0.8 V Accelerator pedal depressed: approx. 4 V |
| APP2 | % | Accelerator pedal released: approx. 8 % Accelerator pedal depressed: approx. 40 % |
| V | Accelerator pedal released: approx. 0.4 V Accelerator pedal depressed: approx. 2 V |
| TP REL | % | Accelerator pedal released: approx. 12 % Accelerator pedal depressed: approx. 82 % |
| LOAD | % | Idle (after warm up): approx. 16.07 % Racing (engine speed is 2,000 rpm ): approx. 14.51 % Racing (engine speed is 4,000 rpm ): approx. 21.17 % |
If simulation function of M-MDS is not used
- Start the engine.
- Disconnect the vacuum hose between the purge solenoid valve and the charcoal canister.
- Put a finger to the purge solenoid valve and verify that there is no vacuum applied when the engine is cold. If there is a vacuum, inspect the following: Wiring harness and connectors (Purge solenoid valve-PCM terminal 1 Al) Purge solenoid valve (See «PURGE SOLENOID VALVE INSPECTION [SKYACTIV-G 2.0]»(ref-615405-S17725918502014051000000) ).
- Warm up the engine to the normal operating temperature.
- Stop the engine.
- Connect the M-MDS to the DLC-2 and verify that DTC P0443:00 is displayed. Perform the DTC inspection. (See «DTC P0443:00 [SKYACTIV-G 2.0]»(ref-615394-S28083405332014051000000) ).
- Switch the ignition ON (engine off or on).
- Select the ECT PID. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ).
- Verify that the engine coolant temperature is above 60°C {140°F}. If the M-MDS indicates that the temperature is below 60°C {140°F} , perform the ECT sensor No.1 inspection. (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.0]»(ref-615396-S00008921182014051000000) ).
- Set the vehicle on a dynamometer or chassis roller. WARNING: When the dynamometer or chassis roller is operating, there is a possibility that the operator may come into contact with or be caught up in the rotating parts, leading to serious injuries or death. When performing work while the dynamometer or chassis roller is operating, be careful not to contact or be caught up in any of the rotating parts.
- Drive the vehicle at an engine speed to approx. 2000 rpm for 30 s or more.
- Put a finger to the purge solenoid valve and verify that there is no vacuum applied during Step 2 . If there is no vacuum, inspect the following: Wiring harness and connector (Main relay-Purge solenoid valve-PCM terminal 1AI) Purge solenoid valve (See «PURGE SOLENOID VALVE INSPECTION [SKYACTIV-G 2.0]»(ref-615405-S17725918502014051000000) ). MAF, APP1, APP2, TP REL and LOAD PIDs If there is vacuum, inspect the following: Vacuum hose (Purge solenoid valve-Charcoal canister)
| Monitor item (Definition) | Unit/Condition | Condition/Specification (Reference) |
|---|
| ECT | °C, °F | Displays the ECT |
| V | ECT is 20°C {68°F}: approx. 3.10 V ECT is 40°C {104°F}: approx. 2.16 V ECT is 60°C {140°F}: approx. 1.40 V ECT is 80°C {176°F}: approx. 0.87 V ECT is 100°C {212°F}: approx. 0.54 V |
| MAF | G/sec | Displays the MAF |
| V | Switch the ignition to ON (MAF: 0.59 g/s {0.078 lb/min}): approx. 0.72 V Idle (after warm up) (MAF: 2.17 g/s {0.287 lb/min}): approx. 0.86 V Racing (engine speed is 2,000 rpm ) (MAF: 4.73 g/s {0.626 lb/min} ): approx. 1.07 V |
| APP1 | % | Accelerator pedal released: approx. 16 % Accelerator pedal depressed: approx. 80 % |
| V | Accelerator pedal released: approx. 0.8 V Accelerator pedal depressed: approx. 4 V |
| APP2 | % | Accelerator pedal released: approx. 8 % Accelerator pedal depressed: approx. 40 % |
| V | Accelerator pedal released: approx. 0.4 V Accelerator pedal depressed: approx. 2 V |
| TP REL | % | Accelerator pedal released: approx. 12 % Accelerator pedal depressed: approx. 82 % |
| LOAD | % | Idle (after warm up): approx. 16.07 % Racing (engine speed is 2,000 rpm ): approx. 14.51 % Racing (engine speed is 4,000 rpm ): approx. 21.17 % |
A/C Cut-off Control System Inspection
- Start the engine.
- Turn the A/C switch and fan switch on.
- Verify that the A/C compressor magnetic clutch actuates. If it does not actuate, perform the symptom troubleshooting "NO.23 A/C DOES NOT WORK SUFFICIENTLY". (See «NO.23 A/C DOES NOT WORK SUFFICIENTLY [SKYACTIV-G 2.0]»(ref-615397-S01635263582014051000000) ).
- Fully open the throttle valve and verify that the A/C compressor magnetic clutch does not actuate for 2-5 s. If it actuates, inspect the following: A/C relay (See «RELAY INSPECTION»(ref-615398-S18271849862014051000000) ). Open or short to ground in wiring harness and connectors (Ignition switch-A/C relay-PCM terminal 2AF) A/C related parts APP1, APP2 PIDS
| Monitor item (Definition) | Unit/Condition | Condition/Specification (Reference) |
|---|
| APP1 | % | Accelerator pedal released: approx. 15 % Accelerator pedal depressed: approx. 82 % |
| V | Accelerator pedal released: approx. 0.75 V Accelerator pedal depressed: approx. 4.1 V |
| APP2 | % | Accelerator pedal released: approx. 7.45 % Accelerator pedal depressed: approx. 41 % |
| V | Accelerator pedal released: approx. 0.38 V Accelerator pedal depressed: approx. 2.05 V |
Cooling Fan Control System Inspection
- Connect the M-MDS to the DLC-2.
- Start the engine and warm it up to normal operating temperature.
- Perform the KOER self test. (See «KOEO/KOER SELF TEST [SKYACTIV-G 2.0]»(ref-615394-S31383143262014051000000) ).
- Verify that DTC P0480:00 is not shown and the cooling fan operates during the KOER self test. If the DTC P0480:00 is displayed, perform the DTC inspection. (See «DTC P0480:00 [SKYACTIV-G 2.0]»(ref-615394-S31520996062014051000000) ). If the cooling fans do not operate, proceed to the following: Inspect the following parts in the indicated order in accordance with fan operation conditions. Open circuit between cooling fan relay and battery positive terminal Open circuit between cooling fan relay and ground Poor connection of the cooling fan relay If there is no malfunction: Replace the cooling fan component. (See «COOLING FAN MOTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615406-S32490169072014051000000) ).
Evaporative Emission (EVAP) System Leak Inspection
- To verify that the problem has been fixed properly after repairs, the run drive cycle or EVAP system leak inspection must be performed.
EVAP system test out line
- The EVAP system test, which can be substituted for the run drive cycle as an EVAP control system repair confirmation method, can detect the small/large leak or blockage without run-drive cycle. NOTE: M-MDS can not detect "VERY SMALL LEAK" To identify the leak point, please use the leak tester or ultrasonic leak detector.
Scheme 96
Scheme 96: EVAP system test description
Scheme 97
Scheme 98
- The EVAP system test finds gas leaks or blockage of EVAP system using the changes of the fuel tank pressure. This test starts after sending an on-demand test signal from the M-MDS to the PCM. This test consists of three stages, and each stage is performed automatically as follows: Stage 1 test (Test for large leak or blockage) M-MDS send the stage 1 test start signal to the PCM. PCM controls the CV solenoid valve and purge solenoid valve to control the tank pressure to the targeted value. M-MDS detect the large leak or the purge line blockage if the tank pressure does not arrive at the target vacuum in specified period. see scheme 19: EVAP Test Result (For Large Leak Or Blockage) Stage 2 test (Test for small leak) When fuel tank pressure arrives at the targeted pressure at stage 1 test, M-MDS sends the stage 2 test signal to the PCM to turn off the purge solenoid to keep the tank pressure. M-MDS detects the small leak if the tank pressure can not be kept within the target of specified period. see scheme 20: EVAP Test Result (For Small Leak) Stage 3 test (Test for blockage) M-MDS sends the stage 3 test signal to the PCM to turn off the CV solenoid to check for blockage of EVAP system. M-MDS detects blockage of the CV solenoid valve or air filter if the tank pressure does not arrive at the target (atmosphere). see scheme 21: EVAP Test Result (For Blockage)
Scheme 99
Scheme 99: EVAP system malfunction judgment
- M-MDS detects the small/large leak or blockage based on fuel tank pressure at the end of EVAP Test. see scheme 22: EVAP System Malfunction Judgment
Scheme 100
Scheme 100: Evaporative system test procedure
- Verify that all PIDs are within the following specifications. NOTE: To successfully perform this procedure, all PIDs must be within specifications before proceeding to the next step.
- Select the following items from the initialization screen of the M-MDS. Select "Powertrain". Select "Fuel". Select "EVAP Test". Verify that ECT and IAT are within specifications at the confirmation screen. To successfully perform this procedure, ECT and IAT must be within spec before proceeding to the next step. Fuel Level must be maintained within 15 %-85 %. PCM will cancel the EVAP Test If the Fuel Level is lower than 15 % or higher than 85 %. see scheme 23: PID Specifications Chart
- Verify the test results described on the M-MDS and follow the instructions.
Scheme 101
Scheme 101: EVAP system leak inspection using leak tester
Scheme 102
- Perform the following SST (EVAP System Tester 134-01049A) self-test: NOTE: If the tester does not work correctly during the self-test, refer to the tester operators manual for a more detailed self-test procedure. Verify that the control valve on the panel is in the HOLD position, then open the nitrogen bottle valve. Connect the vehicle interface hose (part of the SST ) to the SELF-TEST port located on the control panel. Hand tighten the fitting. (Do not overtighten). Turn the control valve to the TEST position. The gauge should read 331-381 mm {13.1-15.0 in} of water. If the gauge is not reading in this range, adjust the pressure by turning the black knob on the low pressure regulator at the nitrogen bottle. (Scheme 95): Inspection EVAP System Leak Using Leak Tester Turn the control valve to the HOLD position. Verify that the gauge holds pressure and that the flow meter reads no flow. If there is no drop in pressure and no flow, the tester passes the self-test. If the gauge leaks down, refer to the tester operators manual.
- Connect the SST to the vehicle. Verify that the control valve on the panel is in the HOLD position, then open the nitrogen bottle valve. Remove the fuel-filler cap from the vehicle. If the fuel-filler cap is not a MAZDA part or equivalent, replace it. NOTE: INSPECT FUEL FILLER CAP AND FILLER NECK Visually inspect for damage, insufficient sealing, rust, cracks or warps of filler cap and filler neck. Repair or replace if necessary. Connect the receiver assembly ( SST: 134-01059) to the vehicle cap test hose assembly (part of the SST ) and the fuel-filler cap from the vehicle. Connect the cap adaptor ( SST: 134-01058) to the vehicle cap test hose assembly (part of the SST ) and to the fuel-filler neck. Connect the vehicle interface hose (part of the SST ) to the center fitting of the vehicle cap test hose assembly (part of the SST ).
- Connect the M-MDS to the DLC-2.
- Switch the ignition ON (engine off).
- Using the M-MDS request the PCM on-board device control (Mode 08) to close the canister vent value. see scheme 25: Identifying Receiver Assembly, Cap Adaptor, Vehicle Interface Hose And Vehicle Cap Test Hose Assembly NOTE: The canister vent value is closed for 10 min unless any of the following actions are done: The engine is started. The ignition is switched to off.
- Make sure the control valve on the 134-01049A is in the HOLD position and that the valve on the cylinder of nitrogen gas is open.
- Turn the control valve to the open position and let the system fill. You should note a drop in the gauge pressure along with the flow meter being pegged at maximum flow for several minutes depending on how full or empty the fuel tank is, and how long it takes to completely fill and pressurize the evaporative emissions system hoses.
- If the gauge and the flow meter do not settle to a measurable level after 2-3 min, then refer to the Mazda Workshop Manual to verify that the canister vent valve is properly closed. If canister vent valve is properly closed, the EVAP system has large leakage. Check for leakage and repair as necessary.
- Verify pressure gauge and flow meter reading to determine if there is an evaporative emissions leak: NO EVAPORATIVE LEAK: The flow meter registers "zero flow" and the pressure gauge returns to the preset pressure of 356 mm {14.0 in} of water (H2O). EVAPORATIVE LEAK: The pressure does not return to the preset level of 356 mm {14.0 in} of water (H2O) when measuring the flow. See "SETTING LEAK STANDARD FOR TESTING" (.020 to.040 inch H2O) of the Evaporative Emissions Tester operators manual (134-01067). NOTE: Turn the control valve to the HOLD position, then disconnect the SST.
