Inspection Method for Sensors
- Connect the M-MDS to the DLC-2.
- Turn the ignition switch to the ON position (Engine off). 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 4
- Connect the M-MDS to the DLC-2.
- Turn the ignition switch to the ON position (Engine off). 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.
ENGINE SYMPTOM DIAGNOSTIC INDEX [L3 WITH TC]
- Verify malfunction symptoms using the following diagnostic index, then go to the appropriate troubleshooting chart.
Diagnostic Index
| No. | TROUBLESHOOTING ITEM | DESCRIPTION | |
|---|---|---|---|
| 1 | Melting of main or other fuses | ||
| 2 | MIL illuminates | MIL is illuminated. | |
| 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. | |
| 5 | Engine stalls. | After start/at idle | Engine stops unexpectedly at idle or after start or both. |
| 6 | Cranks normally but will not start | Starter cranks engine at normal speed but engine will not run. | |
| 7 | Slow return to idle | Engine takes more time than normal to return to idle speed. | |
| 8 | Engine runs rough/rolling idle | Engine speed fluctuates between specified idle speed and lower speed 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 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 WOT 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 issues | Fuel does not shut off properly. | |
| 29 | Spark plug condition | Incorrect spark plug condition | |
DIAGNOSTIC INDEX
Scheme 5
![Scheme 5: QUICK DIAGNOSTIC CHART [L3 WITH TC]](https://i.diagnostdata.com/repair/a7/a7ed15240c06a4f21f356eb733bb17e0d0255a8b4546b96edc64c15013e3c9cb.webp)
Scheme 6
Scheme 7
Scheme 8
Scheme 9
Scheme 10
Scheme 11
Scheme 12
![Scheme 12: NO. 1 MELTING OF MAIN OR OTHER FUSES [L3 WITH TC]](https://i.diagnostdata.com/repair/80/806bc5e18a11a5796b0524515688d4f821e133039c7fd6f25763e3052e80fd14.webp)
| Damaged fuse | Related wiring harness |
|---|---|
| MAIN | MAIN fuse Starter Generator |
| IGN 1 | IGN 1 fuse Room fuse Ignition switch Starter relay Starter relay No. 2 PCM |
| IGN 2 | IGN 2 fuse Ignition switch Starter relay Engine fuse Meter fuse Starter |
| ENGINE (15A) | ENGINE fuse (15A) Fuel pump speed control relay Fuel pump relay Injector relay Ignition coil PCM |
| ENGINE (30A) | ENGINE fuse (30A) Main relay |
| FAN 1 | FAN 1 fuse Cooling fan relay No. 1 Fan control module main |
| FAN 2 | FAN 2 fuse Cooling fan relay No. 2 PCM Fan control module sub |
| FUEL | FUEL fuse Fuel pump resistor Fuel pump speed control relay Fuel pump relay Fuel pump unit |
| METER | METER fuse Starter relay No. 2 TCM |
| ROOM | ROOM fuse DLC-2 |
| INJ | INJ fuse Injector relay PCM |
| ETC | ETC fuse PCM Drive-by-wire relay |
| ECM | ECM fuse PCM Drive-by-wire relay Cooling fan relay No. 1 Cooling fan relay No. 2 |
| ENG BAR 1 | ENG BAR 1 fuse Evapo system leak detection pump Mass air flow sensor Purge solenoid Waste gate control valve Variable swirl solenoid valve Camshaft position sensor Crankshaft position sensor PCM Oil control valve EGR valve |
| ENG BAR 2 | ENG BAR 2 fuse A/F sensor |
| ENG BAR 3 | ENG BAR 3 fuse HO2S PCM |
FUSE REFERENCE
Diagnostic procedure
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Connect the M-MDS to the DLC. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed : Go to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Inspect for an open or short to circuit between instrument cluster terminal 2T and PCM terminal 1AI Inspect for an open or short to circuit between instrument cluster terminal 2R and PCM terminal 1AM (See INSTRUMENT CLUSTER INSPECTION ). | ||
| 2 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | NOTE: The following test should be performed on the advanced keyless entry system. If not equipped, go to the next step. Start the engine using the standard ignition key.Does the engine start? | Yes | Inspect the advanced keyless entry system and repair or replace according to the inspection result. |
| No | Go to the next step. | ||
| 2 | Connect the M-MDS to the DLC-2. Do any of the following conditions appear? Engine does not complete start. DTC B1681 is displayed. | Yes | Both conditions are appear: Go to Step 6. |
| No | Either or other condition appears: Go to the next step. | ||
| 3 | Is the coil antenna connector securely connected to the coil? | Yes | Go to the next step. |
| No | Connect the connector securely, retest from Step 2. | ||
| 4 | Does the security light illuminate? | Yes | Go to the next step. |
| No | Inspect and repair or replace the following: Instrument cluster (See INSTRUMENT CLUSTER INSPECTION ). With advanced keyless entry system Between keyless CM 3X and instrument cluster 2R Between keyless CM 3W and instrument cluster 2T Without advanced keyless entry system Between PCM 1AM and instrument cluster 2R Between PCM 1AI and instrument cluster 2T | ||
| 5 | Retrieve DTCs using the M-MDS. Are any of the following DTCs present? DTC B1213, B1342, B1600, B1601, B1602, B1681, B2103, B2431 | Yes | Go to the appropriate DTC test. (See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)] ). |
| No | Go to the next step. | ||
| 6 | Is there continuity between PCM terminal 1BD, 1AZ, 1BH and ground? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 7 | Turn the ignition switch to the ON position (Engine off.) Measure voltage between PCM terminal 1BD, 1AZ, 1BH and ground. Is the voltage below 1.0V? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 8 | Turn the ignition switch to the ON position. (Engine off) Access the VPWR PID. Is the VPWR PID normal? VPWR PID Battery voltage | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 9 | Disconnect the coil antenna connector. Turn the ignition switch to the ON position. (Engine off) Is there battery voltage at coil connector terminal D? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness between coil connector terminal D and the fuse panel. | ||
| 10 | Inspect the following wiring harness and connectors. With advanced keyless entry system Between coil terminal A and keyless CM terminal 3U Between coil terminal B and keyless CM terminal 3V Without advanced keyless entry system Between coil terminal A and instrument cluster 2Q Between coil terminal B and instrument cluster 2S Is there any malfunction (open or short circuit, terminal corrosion, etc.)? | Yes | Repair or replace malfunctioning part. |
| No | With advanced keyless entry system Go to the next step. Without advanced keyless entry system Go to Step 15. | ||
| 11 | Is there continuity between the keyless CM harness-side connector terminal 2B and body ground? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 12 | Turn the ignition switch to the ON position. Measure the voltage between keyless CM harness-side connector terminal 2B and body ground. Is the voltage below 1.0V? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 13 | Turn the ignition switch to the ON position. (Engine off.) Measure the voltage between keyless CM harness-side connector terminal 2A, 2C, 2D and body ground. Is the voltage B+ ? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 14 | Inspect the following wiring harnesses and connectors. Between keyless CM terminal 3W and PCM 1AI Between keyless CM terminal 3X and PCM 1AM Is there any malfunction (open or short circuit, terminal corrosion, etc.)? | Yes | Repair or replace malfunctioning part. |
| No | Go to the next step. | ||
| 15 | Turn the ignition switch off. Disconnect the coil connector. Turn the ignition switch to the ON position. (Engine off.) Measure the voltage between coil harness-side connector terminal D and body ground. Is the voltage B+? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 16 | Inspect the following: Battery connection (See BATTERY INSPECTION [L3 WITH TC] .) Battery condition (See No. 1 MELTING OF MAIN OR OTHER FUSES [L3 WITH TC] .) Fuses Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 16. | ||
| 17 | Is a clicking sound heard from the starter when the ignition switch is turned to the START position? | Yes | Go to step 21. |
| No | Go to the next Step. | ||
| 18 | Connect the M-MDS to the DLC-2. Monitor TCM PID TR. Does The PID TR indicate normally according to select lever position? | Yes | Go to the next Step. |
| No | Inspect the transaxle range switch. See (TRANSAXLE RANGE (TR) SWITCH INSPECTION [AW6A-EL, AW6AX-EL] .) | ||
| 19 | Inspect the starter relays and following harnesses: Between ignition switch and starter relay No. 1 Between starter relay No. 1 and starter relay No. 2 Between starter relay No. 2 and PCM terminal 1B Between ignition switch and starter relay No. 2 Between starter relay No. 2 and TCM terminal G TCM terminal P and GND Are they normal? | Yes | Go to the next step. |
| No | Repair or replace components as required. Then repeat step 17 | ||
| 20 | Inspect the ignition switch and related harness. (See IGNITION SWITCH INSPECTION .) Are they normal? | Yes | Go to the next step. |
| No | Repair or replace components as required. Then repeat step 17. | ||
| 21 | Inspect the following harness. Between battery and starter relay No. 1 Between starter relay No. 1 and starter Are they normal? | Yes | Go to the next step. |
| No | Repair or replace as required. Then go to the next step | ||
| 22 | Inspect the starter. (See STARTER INSPECTION [L3 WITH TC] ). Is the starter normal? | Yes | Go to the next step. |
| No | Repair or replace as required. | ||
| 23 | Inspect for seized or hydrolock engine or flywheel. Is the engine seized or hydrolocked? | Yes | Repair or replace components as required. |
| No | Go to the next step. | ||
| 24 | Connect the M-MDS to the DLC-2. Retrieve any continuous memory DTCs. Are there any continuous memory DTCs displayed? | Yes | DTC is displayed: Go to the appropriate DTC inspection. (See DTC TABLE [L3 WITH TC] .) Communication error message is displayed: Inspect for following: Open circuit in wiring harness between main relay terminal B and PCM terminal 1 AT Open circuit in wiring harness between main relay terminal D and PCM terminal 1BE Main relay is stuck open Open or short circuit in wiring harness between the DLC-2 and PCM terminals 1AM and 1AI Open or poor GND circuit (PCM terminal 1BB, 1BA, 1AZ, 1BG, 1BD or 1BH) Poor connection of vehicle body GND |
| No | No DTC is displayed: Go to the next step. | ||
| 25 | Perform the KOER self-test using the M-MDS. (See KOEO/KOER SELF TEST [L3 WITH TC] Are there any DTCs displayed during KOER self-test? | Yes | DTC is displayed: Go to the appropriate DTC inspection. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Go to the next step. | ||
| 26 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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 |
|---|
| The following test should be performed on the advanced keyless entry system. If not equipped, go to the next step. |
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Inspect for the following: Fuel quality (proper octane, contamination, winter/summer blend) Fuel leakage Intake-air system leakage or restriction Vacuum leakage Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 1. | ||
| 2 | Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Go to the next step. | ||
| 3 | Access the ECT PID using the M-MDS. Verify that the ECT PID is less than 116°C {241°F} during driving. Is the ECT PID less than specified? | 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 [L3 WITH TC] .) | ||
| 4 | Will the engine run smoothly at part throttle? | Yes | Go to the next step. |
| No | Go to Step 6. | ||
| 5 | Perform the TP sweep inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the electronic throttle control system work properly? | Yes | Visually inspect the throttle body (damage/scratching.) If normal, go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 6 | Perform the EGR system operation inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 7 | Perform the PURGE CONTROL SYSTEM OPERATION INSPECTION. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 8 | Inspect the CMP and CKP sensor for the following; Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). Damaged trigger wheel and camshaft Open or short circuit in the wiring harnesses. Is there any malfunction detected? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. | ||
| 9 | Access and monitor following the PIDs using the data monitor function. ECT MAF O2S11 O2S12 LONGFT1 SHTFT1 Do the PIDs indicate the correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and the related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 10 | Remove and shake the PCV valve. Does the PCV valve rattle? | Yes | Go to the next step. |
| No | Replace the PCV valve. | ||
| 11 | Inspect for restriction in the exhaust system and the three-way catalytic converter (TWC). Is there any restriction? | Yes | Replace the malfunctioning part. |
| No | Go to the next step. | ||
| 12 | Perform the spark test. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 13 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] (+). | Yes | Go to Step 18. |
| No | Go to the next step. | ||
| 14 | Is the vehicle accelerate performance normal? | Yes | Go to the next step. |
| No | Go to Step 16. | ||
| 15 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to Step 17. |
| No | Replace the delivery pipe. | ||
| 16 | Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to Step 21. |
| No | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). | ||
| 17 | Connect the fuel pressure gauge between the fuel pump and the high pressure fuel pump. Measure the fuel pressure line of the low pressure side. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure within the specification? | Yes | Go to the next step. |
| No | Inspect for the following: Fuel line restriction Fuel filter clogging If normal replace the fuel pump. | ||
| 18 | Inspect the fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). Are the fuel injectors normal? | Yes | Go to the next step. |
| No | Replace the suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] ). | ||
| 19 | Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] ). Does the starting system work properly? | Yes | Go to the next step. |
| No | Inspect for the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper valve timing Service if necessary. | ||
| 20 | Inspect the starting system. (See STARTER INSPECTION [L3 WITH TC] ). Does the starting system work properly? | Yes | Replace the injector driver module. If the problem remains, overhaul the engine. |
| No | Repair or replace the malfunctioning part. | ||
| 21 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Connect the M-MDS to the DLC-2. Do any of the following conditions appear? Engine does not start completely. DTC B1681 is displayed. | Yes | Both conditions appear: Go to Step 5. |
| No | Either or other condition appears: Go to the next step. | ||
| 2 | Does the engine stall after approx. 2s from when it is started? | Yes | Go to the next step. |
| No | Is the immobilizer system is normal? Go to Step 16. | ||
| 3 | Is the coil connector securely connected to coil? | Yes | Go to the next step. |
| No | Connect the connector securely, retest from Step 2. | ||
| 4 | Does the security light illuminate? | Yes | Go to the next step. |
| No | Inspect and repair or replace the following: Instrument cluster (See INSTRUMENT CLUSTER INSPECTION ). With advanced keyless entry system Between keyless CM 3X and instrument cluster 2R Between keyless CM 3W and instrument cluster 2T Without advanced keyless entry system Between PCM 1AM and instrument cluster 2R Between PCM 1AI and instrument cluster 2T | ||
| 5 | Retrieve the DTC using the M-MDS. Are any of the following DTCs present? DTC B1213, B1342, B1600, B1601, B1602, B1681, B2103, B2431 | Yes | Go to appropriate DTC test. (See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)] ) |
| No | Go to the next step. | ||
| 6 | Is there continuity between PCM terminal 1BD, 1AZ, 1BH and ground? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 7 | Turn the ignition switch to the ON position (Engine off.) Measure the voltage between PCM terminal 1BD, 1AZ, 1BH and ground. Is the voltage below 1.0V? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 8 | Turn the ignition switch to the ON position. (Engine off) Access the VPWR PID. Is the VPWR PID normal? VPWR PID Battery voltage | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 9 | Disconnect the coil connector. Turn the ignition switch to the ON position. (Engine off) Is there battery voltage at coil connector terminal D? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness between coil connector terminal D and the fuse panel. | ||
| 10 | Inspect the following wiring harness and connectors. With advanced keyless entry system Between coil terminal A and keyless CM terminal 3U Between coil terminal B and keyless CM terminal 3V Without advanced keyless entry system Between coil terminal A and instrument cluster 2Q Between coil terminal B and instrument cluster 2S Is there any malfunction (open or short circuit, terminal corrosion, etc.)? | Yes | Repair or replace malfunction part. |
| No | With advanced keyless entry system Go to the next step. Without advanced keyless entry system Go to Step 14. | ||
| 11 | Is there continuity between the keyless CM harness-side connector terminal 2B and body ground? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 12 | Turn the ignition switch to the ON position. Measure the voltage between keyless CM harness-side connector terminal 2B and body ground. Is the voltage below 1.0V? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 13 | Turn the ignition switch to the ON position. (Engine off.) Measure the voltage between keyless CM harness-side connector terminal 2A, 2C, 2E and body ground. Is the voltage B+? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 14 | Inspect the following wiring harnesses and connectors. Between keyless CM terminal 3W and PCM 1AI Between keyless CM terminal 3X and PCM 1AM Is there any malfunction (open or short circuit, terminal corrosion, etc.)? | Yes | Repair or replace malfunctioning part. |
| No | Go to the next step. | ||
| 15 | Turn the ignition switch off. Disconnect the coil connector. Turn the ignition switch to the ON position. (Engine off.) Measure the voltage between coil harness-side connector terminal D and body ground. Is the voltage B+? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 16 | Inspect for the following: Fuel quality (proper octane, contamination, winter/summer blend) Intake-air system leakage and restriction Electrical connectors Poor connection for PCM ground and body ground Fuel leakage Vacuum leakage Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 16. | ||
| 17 | Perform the self-test function using M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. Is the DTC displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Go to the next step. | ||
| 18 | Access the ECT PID using the M-MDS. Verify that the ECT PID is less than 116°C {241°F} during driving. Is the ECT PID less than specified? | Yes | Go to the next step. |
| No | The cause of this concern could from be cooling system overheating. Perform the symptom troubleshooting "NO. 17 COOLING SYSTEM CONCERNS - OVERHEATING." (See NO. 17 COOLING SYSTEM CONCERNS-OVERHEATING [L3 WITH TC] .) | ||
| 19 | Access the VPWR PID. Turn the ignition switch to the ON position. (Engine off) Does the VPWR PID indicate B+? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness between main relay terminal D and PCM terminal 1BE and 2E. | ||
| 20 | Perform the A/C CUT-OFF OPERATION INSPECTION. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the A/C Cut-off Operation work properly? | Yes | Go to the next step. |
| No | Repair or replace malfunctioning parts according to the inspection results. | ||
| 21 | Will the engine run smoothly at part throttle? | Yes | Go to the next step. |
| No | Go to Step 23. | ||
| 22 | Perform the TP sweep inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the electronic throttle control system work properly? | Yes | Visually inspect the throttle body (damaged/ scratching.) If normal, go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 23 | Perform the EGR system operation inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does EGR system operate properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 24 | Perform the PURGE CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 25 | Perform the VARIABLE VALVE TIMING CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the variable valve timing control system work properly? | Yes | Inspect the valve timing. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 26 | Inspect the CMP and CKP sensor for the following; Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). Damaged trigger wheel and camshaft Open or short circuit in the wiring harnesses Is there any malfunction detected? | Yes | Repair or replace the malfunctioning part according inspection results. |
| No | Go to the next step. | ||
| 27 | Access and monitor the following PIDs using the data monitor function. ECT APP MAF O2S11 O2S12 LONGFT1 SHTFT1 Do the PIDs indicate the correct values under the malfunction condition? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 28 | Remove and shake the PCV valve. Does the PCV valve rattle? | Yes | Go to the next step. |
| No | Replace the PCV valve. | ||
| 29 | Inspect for restriction in the exhaust system and Three-way catalytic converter (TWC). Is there any restriction? | Yes | Replace malfunctioning part. |
| No | Go to the next step. | ||
| 30 | Perform the SPARK TEST . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 31 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to Step 35. |
| No | Go to the next step. | ||
| 32 | Is the vehicle accelerate performance normal? | Yes | Go to the next step. |
| No | Go to Step 34. | ||
| 33 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to Step 35. |
| No | Replace the delivery pipe. | ||
| 34 | Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to Step 38. |
| No | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). | ||
| 35 | Connect the fuel pressure gauge between the fuel pump and the high pressure fuel pump. Measure the fuel pressure line of the low pressure side. (See FUEL LINE PRESSURE INSPECTION [L3 WITH TC] ). Is the fuel pressure within the specification? | Yes | Go to the next step. |
| No | Inspect for the following: Fuel line restriction Fuel filter clogging If normal, replace the fuel pump. | ||
| 36 | Inspect the fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). Are the fuel injectors normal? | Yes | Go to the next step. |
| No | Replace the suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] ). | ||
| 37 | Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] ). Are the compression pressures within the specification? | Yes | Replace the injector driver module. If the problem remains, overhaul the engine. |
| No | Inspect for the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper valve timing Service if necessary. | ||
| 38 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Connect the M-MDS to the DLC-2. Do any of the following conditions appear? Engine does not completely start. DTC B1681 is displayed. | Yes | Both conditions appear: Go to Step 5. |
| No | Either or other condition appears: Go to the next step. | ||
| 2 | Does the engine stall after approx. 2s from when it is started? | Yes | Go to the next step. |
| No | Is the Is the immobilizer system is normal. Go to Step 16. | ||
| 3 | Is the coil connector securely connected to coil? | Yes | Go to the next step. |
| No | Connect the connector securely, retest from Step 1. | ||
| 4 | Does the security light illuminate? | Yes | Go to the next step. |
| No | Inspect and repair or replace the following: Instrument cluster (See INSTRUMENT CLUSTER INSPECTION ). With advanced keyless entry system Between keyless CM 3X and instrument cluster 2R Between keyless CM 3W and instrument cluster 2T Without advanced keyless entry system Between PCM 1AM and instrument cluster 2R Between PCM 1 Al and instrument cluster 2T | ||
| 5 | Retrieve the DTC using the M-MDS. Are any of the following DTCs present? DTC B1213, B1342, B1600, B1601, B1602, B1681, B2103, B2431 | Yes | Go to appropriate DTC test. (See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS AND START SYSTEM)] ). |
| No | Go to the next step. | ||
| 6 | Is there continuity between PCM terminal 1BD, 1AZ, 1BH and ground? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 7 | Turn the ignition switch to the ON position (Engine off.) Measure the voltage between PCM terminal 1BD, 1AZ, 1BH and ground. Is the voltage below 1.0V? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 8 | Turn the ignition switch to the ON position. (Engine off) Access the VPWR PID. Is the VPWR PID normal? VPWR PID Battery voltage | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 9 | Disconnect the coil connector. Turn the ignition switch to the ON position. (Engine off) Is there battery voltage at coil connector terminal D? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness between coil connector terminal D and the fuse panel. | ||
| 10 | Inspect the following wiring harness and connectors. With advanced keyless entry system Between coil terminal A and keyless CM terminal 3U Between coil terminal B and keyless CM terminal 3V Without advanced keyless entry system Between coil terminal A and instrument cluster 2Q Between coil terminal B and instrument cluster 2S Is there any malfunction (open or short circuit, terminal corrosion, etc.)? | Yes | Repair or replace malfunctioning part. |
| No | With advanced keyless entry system Go to the next step. Without advanced keyless entry system Go to Step 14. | ||
| 11 | Is there continuity between the keyless CM harness-side connector terminal 2B and body ground? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 12 | Turn the ignition switch to the ON position. Measure the voltage between keyless CM harness-side connector terminal 2B and body ground. Is the voltage below 1.0V? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 13 | Turn the ignition switch to the ON position. (Engine off.) Measure the voltage between keyless CM harness-side connector terminal 2A, 2C, 2E and body ground. Is the voltage B+? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 14 | Inspect the following wiring harnesses and connectors. Between keyless CM terminal 3W and PCM 1AI Between keyless CM terminal 3X and PCM 1AM Is there any malfunction (open or short circuit, terminal corrosion, etc.)? | Yes | Repair or replace malfunctioning part. |
| No | Go to the next step. | ||
| 15 | Turn the ignition switch off. Disconnect the coil connector. Turn the ignition switch to the ON position. (Engine off.) Measure the voltage between coil harness-side connector terminal D and body ground. Is the voltage B+? | Yes | Go to the next step. |
| No | Repair or replace the wiring harness. | ||
| 16 | Inspect for the following: Fuel quality (proper octane, contamination, winter/summer blend) Intake-air system leakage and restriction Electrical connectors Fuses Fuel leakage Vacuum leakage Poor connection for PCM ground and body ground Are all items normal? | Yes | Go the next step. |
| No | Service if necessary. Repeat Step 16. | ||
| 17 | Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Go to the next step. | ||
| 18 | Access the ECT PID using the M-MDS. Verify that the ECT PID is less than 116°C {241°F} during driving. Is the ECT PID less than specified? | 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 [L3 WITH TC] .) | ||
| 19 | Does the engine start with throttle close? | Yes | Go to the next step. |
| No | Go to Step 25. | ||
| 20 | Perform the VARIABLE VALVE TIMING CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the variable valve timing control system work properly? | Yes | Inspect the valve timing. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 21 | Will the engine start and run smoothly at part throttle? | Yes | Go to the next step. |
| No | Go to Step 23. | ||
| 22 | Perform the TP sweep inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the electronic throttle control system work properly? | Yes | Visually inspect the throttle body (damaged/ scratching.) If normal, go to the next step. |
| No | Inspect or replace the malfunctioning parts, according the to inspection results. | ||
| 23 | Access the RPM PID using the M-MDS. Is the RPM PID indicating engine speed when the cranking engine. | Yes | Go to the next step. |
| No | Inspect the CKP sensor for following; Installation condition (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). Damaged trigger wheel and camshaft Open or short circuit in wiring harnesses Is there any malfunction detected? | ||
| 24 | Inspect CMP sensor for the following; Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). Damaged trigger wheel and camshaft Open or short circuit in wiring harnesses Is there any malfunction detected? | Yes | Repair or replace the malfunctioning part according inspection results. |
| No | Go to the next step. | ||
| 25 | Perform the EGR system operation inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does EGR system operate properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 26 | Perform the PURGE CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 27 | Access and monitor the following PIDs using the data monitor function. ECT APP MAF O2S11 O2S12 LONGFT1 SHTFT1 Do the PIDs indicate the correct values under the malfunction condition? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and the related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 28 | Inspect for restriction in the exhaust system and three-way catalytic converter (TWC). Is there any restriction? | Yes | Replace malfunctioning part. |
| No | Go to the next step. | ||
| 29 | Remove and shake the PCV valve. Does the PCV valve rattle? | Yes | Go to the next step. |
| No | Replace the PCV valve. | ||
| 30 | Perform the SPARK TEST . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 31 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to Step 35. |
| No | Go to the next step. | ||
| 32 | Replace the high pressure fuel pump. MOnitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to Step 37. |
| No | Go to the next step. | ||
| 33 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to the next step. |
| No | Replace the delivery pipe. | ||
| 34 | Connect the fuel pressure gauge between the fuel pump and the high pressure fuel pump. Measure the fuel pressure line of the low pressure side. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure within the specification? | Yes | Go to the next step. |
| No | Inspect for the following: Fuel line restriction Fuel filter clogging If normal, replace the fuel pump. | ||
| 35 | Inspect the fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). Are the fuel injectors normal? | Yes | Go to the next step. |
| No | Replace the suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] ). | ||
| 36 | Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] ). Are the compression pressures within the specification? | Yes | Replace the injector driver module. If the problem remains, overhaul the engine. |
| No | Inspect for the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper valve timing Service if necessary. | ||
| 37 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Inspect air suction in intake-air system components while racing engine to higher speed. Is any air suction? | Yes | Repair or replace as necessary. |
| No | Go to the next step. | ||
| 2 | Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Go to the next step. | ||
| 3 | Access the ECT PID. Start and warm-up engine to normal operating temperature. Is the ECT PID reading below 82°C {180°F}? | Yes | Go to the next step. |
| No | Go to symptom troubleshooting " NO. 18 COOLING SYSTEM CONCERNS, RUNS COLD ". (See NO. 18 COOLING SYSTEM CONCERNS-RUNS COLD [L3 WITH TC] .) | ||
| 4 | Verify the cooling fan operation. Does the cooling fan operate properly according ECT PID value? | Yes | Go to the next step. |
| No | Perform the COOLING FAN CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) | ||
| 5 | Inspect CMP and CKP sensor for the following; Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). Damaged trigger wheel and camshaft Open or short circuit in the wiring harnesses. Is there any malfunction detected? | Yes | Repair or replace the malfunctioning part according inspection results. |
| No | Go to the next step. | ||
| 6 | Access and monitor following the PIDs using the data monitor function. ECT APP MAF PSP (PCM terminal 2T) Do the PIDs indicate the correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and the related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 7 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to Step 11. |
| No | Go to the next step. | ||
| 8 | Is the vehicle accelerate performance normal? | Yes | Go to the next step. |
| No | Go to Step 10. | ||
| 9 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to Step 11. |
| No | Replace the delivery pipe. | ||
| 10 | Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to Step 13. |
| No | Go to the next step. | ||
| 11 | Inspect the fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). Are fuel injectors normal? | Yes | Go to the next step. |
| No | Replace the suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] ). | ||
| 12 | Remove the thermostat and inspection operation. (See THERMOSTAT REMOVAL/INSTALLATION [L3 WITH TC] ). (See THERMOSTAT INSPECTION [L3 WITH TC] ). Is the thermostat normal? | Yes | Inspect and repair or replace the throttle body. If throttle body is normal or the problem remains, replace the injector driver module. |
| No | Replace thermostat. | ||
| 13 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Inspect for 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 Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 1. | ||
| 2 | Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Go to the next step. | ||
| 3 | Access the ECT PID. Verify that the ECT PID is less than 116°C {241°F} during driving. Is the ECT PID less than specified? | 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 [L3 WITH TC] .) | ||
| 4 | Perform the A/C CUT-OFF OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the A/C Cut-off Operation work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning parts according to inspection results. | ||
| 5 | Perform the EGR system operation inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 6 | Perform the TP sweep inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the electronic throttle control system work properly? | Yes | Visually inspect the throttle body (damaged/ scratching.) If normal, go to the next step. |
| No | Inspect or replace the malfunctioning parts, according the to inspection results. | ||
| 7 | Perform the PURGE CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 8 | Perform the VARIABLE VALVE TIMING CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the variable valve timing control system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 9 | Inspect CMP and CKP sensor for the following; Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). Damaged trigger wheel and camshaft Open or short circuit in the wiring harnesses. Is there any malfunction detected? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. | ||
| 10 | Connect the M-MDS to the DLC-2. Access and monitor following PIDs using the data monitor function. ACSW APP ECT MAF MAP PSP (PCM terminal 2T) Do the PIDs indicate the correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and the related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 11 | Inspect for restriction in the exhaust system and three-way catalytic converter (TWC). Is there any restriction? | Yes | Replace the malfunctioning part. |
| No | Go to the next step. | ||
| 12 | Remove and shake the PCV valve. Does the PCV valve rattle? | Yes | Go to the next step. |
| No | Replace the PCV valve. | ||
| 13 | Perform the SPARK TEST . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 14 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to Step 18. |
| No | Go to the next step. | ||
| 15 | Is the vehicle accelerate performance normal? | Yes | Go to the next step. |
| No | Go to Step 17. | ||
| 16 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to Step 18. |
| No | Replace the delivery pipe. | ||
| 17 | Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to Step 21. |
| No | Go to the next step. | ||
| 18 | Connect the fuel pressure gauge between the fuel pump and the high pressure fuel pump. Measure the fuel pressure line of the low pressure side. (See FUEL LINE PRESSURE INSPECTION [L3 WITH TC] ). Is the fuel pressure within the specification? | Yes | Go to the next step. |
| No | Inspect for the following: Fuel line restriction Fuel filter clogging If normal replace the fuel pump. | ||
| 19 | Inspect fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). Are the fuel injectors normal? | Yes | Go to the next step. |
| No | Replace the suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] ). | ||
| 20 | Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] ). Are compression pressures within the specification? | Yes | Replace the injector driver module. If the problem remains, overhaul the engine. |
| No | Inspect for the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper valve timing Service if necessary. | ||
| 21 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Connect the M-MDS to the DLC. Access the ECT PID. Start and warm-up engine to normal operating temperature. Is ECT PID reading between 82-112°C {180-234°F}? | Yes | Go to the next step. |
| No | ECT PID is higher than 112°C {234°F}: Go to symptom troubleshooting " NO. 17 COOLING SYSTEM CONCERNS - OVERHEATING ". ECT PID is less than 82°C {180°F} Go to symptom troubleshooting " NO. 18 COOLING SYSTEM CONCERNS - RUNS COLD ". | ||
| 2 | Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Go to the next step. | ||
| 3 | Inspect for leakage in intake-air system. Is there any leakage found? | Yes | Repair or replace for leakage. |
| No | Go to the next step. | ||
| 4 | Perform the TP sweep inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the electronic throttle control system work properly? | Yes | Visually inspect the throttle body (damaged/ scratching.) If normal, go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 5 | Connect the M-MDS to the DLC-2. Access and monitor the following PIDs using the data monitor function. ECT APP ACSW PSP (PCM terminal 2T) Do the PIDs indicate the correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and the related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 6 | Inspect the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP INSPECTION [L3 WITH TC] ). Is the high pressure fuel pump normal? | Yes | Go to the next step. |
| No | Replace the high pressure fuel pump. | ||
| 7 | Inspect the fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). Are fuel injectors normal? | Yes | Go to the next step. |
| No | Replace the suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] ). | ||
| 8 | Inspect the operation of cruise control system. Does the cruise control system work properly? | Yes | Inspect and repair or replace the injector driver module or related circuit. |
| No | Repair or replace the malfunctioning part according to inspection results. | ||
| 9 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Does the engine idle rough? | Yes | Go to symptom troubleshooting " NO. 8 ENGINE RUNS ROUGH/ROLLING IDLE ". (See NO. 8 ENGINE RUNS ROUGH/ROLLING IDLE [L3 WITH TC] .) |
| No | Go to the next step. | ||
| 2 | Verify the following: Fuel quality (proper octane, contamination, winter/summer blend) Intake-air system restriction or leakage Fuel leakage in fuel system Vacuum leakage Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 2. | ||
| 3 | Inspect CMP and CKP sensor for the following; Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). Damaged trigger wheel and camshaft Open or short circuit in the wiring harnesses Is there any malfunction detected? | Yes | Repair or replace the malfunctioning part according inspection results. |
| No | Go to the next step. | ||
| 4 | Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Go to the next step. | ||
| 5 | Connect the M-MDS to the DLC-2. Access and monitor the following PIDs using the data monitor function. ACSW APP BOO ECT MAF TP O2S11 O2S12 LONGFT1 SHTFT1 PSP (PCM terminal 2T) Do the PIDs indicate the correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and the related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 6 | Perform the EGR system operation inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 7 | Perform the TP sweep inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the electronic throttle control system work properly? | Yes | Visually inspect the throttle body (damaged/scratching.) If normal, go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 8 | Perform the PURGE CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge solenoid valve work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 9 | Perform the A/C CUT-OFF OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the A/C Cut-off Operation work properly? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning parts according to inspection results. | ||
| 10 | Inspect adjustment of TR switch. (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [AW6A-EL, AW6AX-EL] ). Is TR switch adjusted properly? | Yes | Go to the next step. |
| No | Adjust TR switch. If problem remains replace TR switch. (See TCM REMOVAL/INSTALLATION [AW6A-EL, AW6AX-EL] ). | ||
| 11 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to Step 15. |
| No | Go to the next step. | ||
| 12 | Is the vehicle accelerate performance normal? | Yes | Go to the next step. |
| No | Go to Step 14. | ||
| 13 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to Step 15. |
| No | Replace the delivery pipe. | ||
| 14 | Replace the high pressure fuel pump Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to the Step 18. |
| No | Go to the next step. | ||
| 15 | Connect the fuel pressure gauge between the fuel pump and the high pressure fuel pump. Measure the fuel pressure line of the low pressure side. (See FUEL LINE PRESSURE INSPECTION [L3 WITH TC] ). Is the fuel pressure within the specification? | Yes | Go to the next step. |
| No | Inspect for the following: Fuel line restriction Fuel filter clogging If normal replace the fuel pump. | ||
| 16 | Inspect the fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). Are fuel injectors normal? | Yes | Go to the next step. |
| No | Replace the suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] ). | ||
| 17 | Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] ). Are compression pressures within the specification? | Yes | Replace the injector driver module. If the problem remains, overhaul the engine. |
| No | Inspect for the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper valve timing Service if necessary. | ||
| 18 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
NO. 10 LOW IDLE/STALLS DURING DECELERATION [L3 WITH TC] DIAGNOSTIC PROCEDURE
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Inspect for 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 Fuel leakage from fuel line Vacuum leakage Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 1. | ||
| 2 | Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Go to the next step. | ||
| 3 | Access the ECT PID. Verify that the ECT PID is less than 116°C {241°F} during driving. Is the ECT PID less than specified? | 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 [L3 WITH TC] .) | ||
| 4 | Perform the MAIN RELAY OPERATION INSPECTION with wiggle the related harness. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the main relay operate properly? | Yes | Go to the next step. |
| No | Repair or replace for the intermittent fault. | ||
| 5 | Inspect CMP and CKP sensor for the following; Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). Damaged trigger wheel and camshaft Open or short circuit in the wiring harnesses Is there any malfunction detected? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. | ||
| 6 | Connect the M-MDS to DLC-2. Access and monitor following PIDs using the data monitor function while wiggle the harness and under trouble condition. APP ECT MAF IAT IAT2 MAP FP VSS O2S11 O2S12 LONGFT1 SHTFT1 Do the PIDs indicate correct values? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the Step 13. |
| No | Inspect and repair or replace suspected parts and related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) If the MAP PID remains without specified, go to the next step. | ||
| 7 | Perform the EGR system operation inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does EGR system operate properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 8 | Perform the A/C CUT-OFF OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the A/C Cut-off Operation work properly? | Yes | Go to the next step. |
| No | Repair or replace malfunctioning parts, according to inspection results. | ||
| 9 | Perform the TP sweep inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the electronic throttle control system work properly? | Yes | Visually inspect the throttle body (damaged/ scratching.) If normal, go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 10 | Perform the VARIABLE SWIRL CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the variable swirl system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 11 | Perform the PURGE CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge control system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 12 | Perform the FUEL PUMP SPEED CONTROL INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the fuel pump speed control work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 13 | Perform the WASTEGATE CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the wastegate control system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 14 | Remove the parts necessary to inspect turbocharger without removing the turbocharger. Inspect if turbocharger compressor wheel is bent, damaged, or interfering with housing on vehicle. (See TURBOCHARGER INSPECTION [L3 WITH TC] ). Is there any problem? | Yes | Replace the turbocharger. |
| No | Go to the next step. | ||
| 15 | Inspect the turbocharger compressor wheel locknut is loose or has fallen down inside turbocharger. Is there any problem? | Yes | Replace the turbocharger. |
| No | Go to the next step. | ||
| 16 | Inspect turbocharger compressor wheel by hand. Does the wheel turn easily and smoothly? | Yes | Go to the next step. |
| No | Replace the turbocharger. | ||
| 17 | Inspect the turbocharger turbine wheel is damaged, cracked or interfering with housing on vehicle. NOTE: Inspect all fins on each turbine wheel. Is there any problem? | Yes | Replace the turbocharger. |
| No | Go to the next step. | ||
| 18 | Is any engine oil found inside turbocharger turbine housing? | Yes | Excessive amount of oil is found: Replace the turbocharger. Small amount of oil is found: Wipe oil out of vehicle, then go to the next step. |
| No | Go to the next step. | ||
| 19 | Is any engine oil found inside turbocharger compressor housing? | Yes | Wipe oil out vehicle and install all removed parts in Step 14. Then, go to the next step. |
| No | Turbocharger is normal. Install all parts removed in Step 14. Then, go to the next step. | ||
| 20 | Inspect for restriction in the exhaust system and three-way catalytic converter (TWC). Is there any restriction? | Yes | Replace the malfunctioning part. |
| No | Go to the next step. | ||
| 21 | Remove and shake the PCV valve. Does the PCV valve rattle? | Yes | Go to the next step. |
| No | Replace the PCV valve. | ||
| 22 | Perform the SPARK TEST . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] ). Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 23 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to Step 27. |
| No | Go to the next step. | ||
| 24 | Is the vehicle accelerate performance normal? | Yes | Go to the next step. |
| No | Go to Step 26. | ||
| 25 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to the Step 27. |
| No | Replace the delivery pipe. | ||
| 26 | Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to Step 30. |
| No | Go to the next step. | ||
| 27 | Connect the fuel pressure gauge between the fuel pump and the high pressure fuel pump. Measure the fuel pressure line of the low pressure side. (See FUEL LINE PRESSURE INSPECTION [L3 WITH TC] ). Is the fuel pressure with in the specification? | Yes | Go to the next step. |
| No | Inspect for the following: Fuel line restriction Fuel filter clogging If normal replace the fuel pump. | ||
| 28 | Inspect the fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). Are fuel injectors normal? | Yes | Go to the next step. |
| No | Replace the suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] ). | ||
| 29 | Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] ). Are compression pressures within the specification? | Yes | Replace the injector driver module. If the problem remains, overhaul the engine. |
| No | Inspect for the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper valve timing Service if necessary. | ||
| 30 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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 |
|---|
| Inspect all fins on each turbine wheel. |
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Verify the following: Fuel quality (proper octane, contamination, winter/summer blend) Air cleaner restriction or dirty Intake-air system restriction or leakage Charge air cooler condition (restriction or damaged) Turbocharger compressor-to-intake manifold duct loose connection Leakage at exhaust manifold or turbocharger mounting flange Vacuum leakage Clutch slippage Brake dragging Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 1. | ||
| 2 | Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Go to the next step. | ||
| 3 | Is the engine overheating? | Yes | Go to symptom troubleshooting " NO. 17 COOLING SYSTEM CONCERN-OVERHEATING ." (See NO. 17 COOLING SYSTEM CONCERNS-OVERHEATING [L3 WITH TC] .) |
| No | Go to the next step. | ||
| 4 | Perform the EGR system operation inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate property? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 5 | Perform the A/C CUT-OFF OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the A/C Cut-off Operation work properly? | Yes | Go to the next step. |
| No | Repair or replace malfunctioning parts, according to the inspection results. | ||
| 6 | Perform the TP sweep inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the variable swirl system work properly? | Yes | Visually inspect throttle body (damaged/scratching.) If normal, go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 7 | Perform the VARIABLE SWIRL CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 8 | Perform the VARIABLE VALVE TIMING CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the variable valve timing control system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 9 | Perform the PURGE CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge control system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 10 | Perform FUEL PUMP SPEED CONTROL INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the fuel pump speed control work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 11 | Perform the WASTEGATE CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the wastegate control system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 12 | Connect the M-MDS to DLC-2. Access and monitor following PIDs using the data monitor function. ECT MAF IAT IAT2 APP TP MAP FP (Low side pressure line) VSS Do the PIDs indicate correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 13 | Inspect CMP and CKP sensor for following; Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). Damaged trigger wheel and camshaft Open or short circuit in wiring harnesses Is there any malfunction detected? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. | ||
| 14 | Remove and shake PCV valve. Does the PCV valve rattle? | Yes | Go to the next step. |
| No | Replace the PCV valve. | ||
| 15 | Inspect spark plug condition. Is spark plug wet, covered with carbon or grayish white? | Yes | Spark plug is wet or covered with carbon: Perform the SPARK TEST and repair or replace malfunctioning part according to inspection result. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] ). Spark plug is grayish white: Go to Step 23. |
| No | Install spark plugs on original cylinders. Go to the next step. | ||
| 16 | Inspect for restriction in exhaust system and three-way catalytic converter (TWC). Is there any restriction? | Yes | Replace malfunctioning part. |
| No | Go to the next step. | ||
| 17 | Remove parts necessary to inspect turbocharger without removing the turbocharger. Inspect if turbocharger compressor wheel is bent, damaged, or interfering with housing on vehicle. (See TURBOCHARGER INSPECTION [L3 WITH TC] ). Is there any problem? | Yes | Replace turbocharger. |
| No | Go to the next step. | ||
| 18 | Inspect turbocharger compressor wheel locknut is loose or has fallen down inside turbocharger. Is there any problem? | Yes | Replace turbocharger. |
| No | Go to the next step. | ||
| 19 | Inspect turbocharger compressor wheel by hand. Does wheel turn easily and smoothly? | Yes | Go to the next step. |
| No | Replace turbocharger. | ||
| 20 | Inspect turbocharger turbine wheel is damaged, cracked or interfering with housing on vehicle. NOTE: Inspect all fins on each turbine wheel. Is there any problem? | Yes | Replace turbocharger. |
| No | Go to the next step. | ||
| 21 | Is any engine oil found inside turbocharger turbine housing? | Yes | Excessive amount of oil is found: Replace turbocharger. Small amount of oil is found: Wipe oil out of vehicle, then Go to the next step. |
| No | Go to the next step. | ||
| 22 | Is any engine oil found inside turbocharger compressor housing? | Yes | Wipe oil out vehicle and install all removed parts in Step 17. Then, Go to the next step. |
| No | Turbocharger is normal. Install all parts removed in Step 17. Then, Go to the next step. | ||
| 23 | Inspect for leakage in fuel line. Is there any fuel leakage found? | Yes | Repair or replace suspected part. |
| No | Go to the next step. | ||
| 24 | Access and monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to Step 27. |
| No | Go to the next step. | ||
| 25 | Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to Step 30. |
| No | Go to the next step. | ||
| 26 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to the next step. |
| No | Replace the delivery pipe. | ||
| 27 | Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. Measure the fuel pressure line of the low pressure side. (See FUEL LINE PRESSURE INSPECTION [L3 WITH TC] ). Is the fuel pressure within the specification? | Yes | Go to the next step. |
| No | Inspect for the following: Fuel line restriction Fuel filter clogging If normal replace the fuel pump. | ||
| 28 | Inspect fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). Are fuel injectors normal? | Yes | Go to the next step. |
| No | Replace suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] ). | ||
| 29 | Measure compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] ). Are compression pressures within the specification? | Yes | Replace the injector driver module. If the problem remains, overhaul the engine. |
| No | Inspect for the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper valve timing Service if necessary. | ||
| 30 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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 |
|---|
| Inspect all fins on each turbine wheel. |
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Connect the M-MDS to the DLC-2. Access the ECT PID. Verify that the ECT PID is less than 116°C {241°F} during driving. Is ECT PID less than specified? | 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 [L3 WITH TC] .) | ||
| 2 | Inspect for the following: Air leakage or restriction from intake-air system Fuel quality (proper octane, contamination, winter/summer blend) Exhaust system and/or three-way catalytic converter (TWC) restriction Charge air cooler condition (restriction or damaged) Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 2. | ||
| 3 | Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Go to the next step. | ||
| 4 | Inspect the knock sensor. (See KNOCK SENSOR (KS) INSPECTION [L3 WITH TC] ). Is the knock sensor normal? | Yes | Go to the next step. |
| No | Replace the knock sensor. (See KNOCK SENSOR (KS) REMOVAL/INSTALLATION [L3 WITH TC] ) | ||
| 5 | Perform the EGR system operation inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 6 | Perform the TP sweep inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the electronic throttle control system work properly? | Yes | Visually inspect the throttle body (damaged/ scratching.) If normal, go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 7 | Perform the VARIABLE SWIRL CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the variable swirl system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 8 | Perform the WASTEGATE CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the wastegate control system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 9 | Perform the SPARK TEST . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 10 | Inspect CMP and CKP sensor for the following; Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). Damaged trigger wheel and camshaft Open or short circuit in the wiring harnesses Is there any malfunction detected? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. | ||
| 11 | Connect the M-MDS to the DLC-2. Access and monitor the following PIDs using the data monitor function. ECT MAF IAT IAT2 APP TP MAP Do the PIDs indicate correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and the related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 12 | Access and monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to Step 16. |
| No | Go to the next step. | ||
| 13 | Is the vehicle accelerate performance normal? | Yes | Go to the next step. |
| No | Go to the Step 15. | ||
| 14 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to Step 16. |
| No | Replace the delivery pipe. | ||
| 15 | Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to Step 17. |
| No | Go to the next step. | ||
| 16 | Measure compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] ). Are compression pressure within the specified? | Yes | Inspect fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). |
| No | Inspect following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper valve timing Service as necessary. | ||
| 17 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Inspect for the following: Air cleaner element for contamination Intake-air system restriction Fuel quality (proper octane, contamination, winter/summer blend) Coolant level ATF level Brake dragging Charge air cooler condition (restriction or damaged) Vacuum leakage Fuel leakage MAF sensor contaminated Exhaust system and/or three-way catalytic converter restriction Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 1. | ||
| 2 | Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | No DTC is displayed: Go to the next step. | ||
| 3 | Perform the COOLING FAN CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the cooling fan system operate properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 4 | Perform the EGR system operation inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 5 | Perform the VARIABLE SWIRL CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the variable swirl system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 6 | Perform the WASTEGATE CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the wastegate control system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 7 | Perform the A/C CUT-OFF OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the A/C Cut-off Operation work properly? | Yes | Go to the next step. |
| No | Repair or replace malfunctioning parts, according to the inspection results. | ||
| 8 | Remove and shake the PCV valve. Does the PCV valve rattle? | Yes | Go to the next step. |
| No | Replace the PCV valve. | ||
| 9 | Perform the SPARK TEST . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Is the strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 10 | Inspect CMP and CKP sensor for the following; Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). Damaged trigger wheel and camshaft Open or short circuit in the wiring harnesses Is there any malfunction detected? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. | ||
| 11 | Connect the M-MDS to the DLC-2. Access and monitor following PIDs using the data monitor function. ECT MAF IAT IAT2 APP TP MAP VSS Do the PIDs indicate the correct values according to the engine operating condition? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and the related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 12 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to Step 16. |
| No | Go to the next step. | ||
| 13 | Is the vehicle accelerate performance normal? | Yes | Go to the next step. |
| No | Go to Step 15. | ||
| 14 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to Step 16. |
| No | Replace the delivery pipe. | ||
| 15 | Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to Step 19. |
| No | Go to the next step. | ||
| 16 | Inspect the turbocharger. (See TURBOCHARGER INSPECTION [L3 WITH TC] ). Is there any problem in turbocharger? | Yes | Replace the turbocharger. |
| No | Go to the next step. | ||
| 17 | Inspect the fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). Are fuel injectors normal? | Yes | Go to the next step. |
| No | Replace the suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] ). | ||
| 18 | Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] ). Are compression pressures within the specification? | Yes | Replace the injector driver module. If the problem remains, overhaul the engine. |
| No | Inspect for the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper valve timing Service if necessary. | ||
| 19 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Is the engine overheating? | Yes | Go to symptom troubleshooting " NO. 17 COOLING SYSTEM CONCERNS - OVERHEATING ." |
| No | Go to the next step. | ||
| 2 | Does the engine runs cold? | Yes | Go to symptom troubleshooting " NO. 18 COOLING SYSTEM CONCERNS - RUNS COLD ." |
| No | Go to the next step. | ||
| 3 | Connect the M-MDS to the DLC. Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. Is a DTC displayed? | Yes | DTC is displayed: Go to appropriate DTC test. |
| No | No DTC is displayed: Go to the next step. | ||
| 4 | Inspect for the following. Fuel quality (proper octane, contamination, winter/summer blend) Charge air cooler condition (restriction or damaged) Air cleaner element (clogging or restriction) Intake-air system leakage PCV valve installation Vacuum line leakage or blockage Fuel leakage at fuel system Charcoal canister damaged Exhaust system and/or three-way catalytic converter restriction Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 4. | ||
| 5 | Perform the EGR system operation inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 6 | Perform the TP sweep inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the electronic throttle control system work properly? | Yes | Visually inspect the throttle body (damaged/ scratching.) If normal, go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 7 | Perform the VARIABLE SWIRL CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the variable swirl system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 8 | Perform the WASTEGATE CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the wastegate control system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 9 | Perform the EVAPORATIVE EMISSION (EVAP) SYSTEM LEAK INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the evaporative emission system work properly? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 10 | Remove and shake the PCV valve. Does the PCV valve rattle? | Yes | Go to the next step. |
| No | Replace the PCV valve. | ||
| 11 | Perform the SPARK TEST . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 12 | Inspect CMP and CKP sensor for the following; Installation condition (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] ). Damaged trigger wheel and camshaft Open or short circuit in the wiring harnesses Is there any malfunction detected? | Yes | Repair or replace the malfunctioning part according to the inspection results. |
| No | Go to the next step. | ||
| 13 | Connect the M-MDS to the DLC-2. Access and monitor the following PIDs us using the data monitor function. ECT MAF IAT IAT2 APP TP MAP VSS O2S11 O2S12 LONGFT1 SHTFT1 Do the PIDs indicate the correct values according to the engine operating condition? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and the related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 14 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to Step 18. |
| No | Go to the next step. | ||
| 15 | Is the vehicle accelerate performance normal? | Yes | Go to the next step. |
| No | Go to Step 17. | ||
| 16 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to Step 18. |
| No | Replace the delivery pipe. | ||
| 17 | Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to Step 22. |
| No | Go to the next step. | ||
| 18 | Inspect the turbocharger. (See TURBOCHARGER INSPECTION [L3 WITH TC] ). Is there any problem in turbocharger? | Yes | Replace the turbocharger. |
| No | Go to the next step. | ||
| 19 | Inspect the three-way catalytic converter (TWC). Is the TWC normal? | Yes | Go to the next step. |
| No | Replace the TWC. | ||
| 20 | Inspect the fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). Are fuel injectors normal? | Yes | Go to the next step. |
| No | Replace the suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] ). | ||
| 21 | Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] ). Are compression pressures within the specification? | Yes | Replace the injector driver module. If the problem remains, overhaul the engine. |
| No | Inspect for the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper valve timing Service if necessary. | ||
| 22 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Remove and shake the PCV valve. Does the PCV valve rattle? | Yes | Go to the next step. |
| No | Replace the PCV valve. | ||
| 2 | Verify the following: Proper dipstick Proper engine oil viscosity Engine oil level Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 2. | ||
| 3 | Inspect the oil leakage from outside of the engine. Is there any oil leakage found? | Yes | Repair or replace oil leakage part. |
| No | Go to the next step. | ||
| 4 | Remove the parts to necessary to inspect turbocharger without removing the turbocharger. Visually inspect for the oil leakage inside turbocharger compressor and turbine housing. Is any engine oil found inside turbocharger compressor or turbine housing? | Yes | Excessive amount of oil is found: Replace the turbocharger. Small amount of oil is found: Wipe oil out of vehicle, then go to the next step. |
| No | Go to the next step. | ||
| 5 | Is any engine oil found around oil pipes attached on turbocharger center housing? | Yes | If oil leaks from damaged pipe, replace oil pipe. Install the removed parts at Step 4. |
| No | Inspect internal engine parts such as valves, valve guides, valve stem seals, cylinder head drain passage, and piston rings. Then install the removed parts at Step 4. | ||
| 6 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Inspect for the following: Engine coolant level Coolant leakage (around heater unit in passenger compartment, coolant hoses and/ or radiator.) Water and anti-freeze mixture Radiator condition Collapsed or restricted radiator hoses Radiator pressure cap Coolant overflow system Fan rotational direction Fan rotation direction Fuses Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 1. Service if necessary. | ||
| 2 | Connect the M-MDS to the DLC-2. Turn the ignition switch to the ON position (Engine off). Retrieve any DTCs. Is there any DTCs displayed? | Yes | DTC is displayed: Go to appropriate DTC test. |
| No | No DTC is displayed: Go to the next step. | ||
| 3 | Perform the KOEO and KOER self-test function using the M-MDS. (See KOEO/KOER SELF TEST [L3 WITH TC] ). Is there any DTCs displayed? | Yes | DTC is displayed: Go to appropriate DTC test. |
| No | No DTC is displayed: Go to the next step. | ||
| 4 | Start the engine and run it at idle speed. Turn the A/C switch off. Does the A/C compressor disengage? | Yes | Go to the next step. |
| No | Go to symptom troubleshooting " NO. 24 A/C ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY ." (See NO. 24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [L3 WITH TC] .) | ||
| 5 | Perform the COOLING FAN CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the cooling fan system operate properly? | Yes | Go to the next step. |
| No | Repair or replace malfunctioning part, according to inspection results. | ||
| 6 | Is the drive belt normal? | Yes | Go to the next step. |
| No | Replace the drive belt. | ||
| 7 | Is there any leakage around heater unit in passenger compartment? | Yes | Inspect and service heater unit for leakage. |
| No | Go to the next step. | ||
| 8 | Is there any leakage at coolant hoses and/or radiator? | Yes | Replace the malfunctioning part. |
| No | Go to the next step. | ||
| 9 | Cool down the engine. Remove the thermostat and inspect operation. (See THERMOSTAT REMOVAL/INSTALLATION [L3 WITH TC] ). (See THERMOSTAT INSPECTION [L3 WITH TC] ). Is thermostat normal? | Yes | Thermostat is normal. Inspect the cylinder block for leakage or blockage. |
| No | Access the ECT PID using the M-MDS. Inspect for both ECT PID and temperature gauge readings. If the temperature gauge on instrument cluster indicates normal but ECT PID is not same as temperature gauge reading, inspect the ECT sensor. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) If the temperature gauge on instrument cluster indicates overheating but ECT PID is normal, inspect the instrument cluster. (See INSTRUMENT CLUSTER INSPECTION ). | ||
| 10 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Is customer complaint "Lack of passenger compartment heat" only? | Yes | Inspect the A/C heater system. |
| No | Go to the next step. | ||
| 2 | Does the engine speed continue at fast idle? | Yes | Go to symptom troubleshooting " NO. 9 FAST IDLE/ RUNS ON ." (See NO. 9 FAST IDLE/RUNS ON [L3 WITH TC] .) |
| No | Go to the next step. | ||
| 3 | Cool down the engine. Remove the thermostat and inspect operation. (See THERMOSTAT REMOVAL/INSTALLATION [L3 WITH TC] ). (See THERMOSTAT INSPECTION [L3 WITH TC] ). Is thermostat normal? | Yes | Go to the next step. |
| No | Replace the thermostat. | ||
| 4 | Perform the COOLING FAN CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the cooling fan system operate properly? | Yes | Access the ECT PID using the M-MDS. Inspect for both ECT PID and temperature gauge readings. If the temperature gauge on instrument cluster indicates normal but ECT PID is not same as temperature gauge reading, inspect the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3 WITH TC] ). If the temperature gauge on instrument cluster indicates overheating but ECT PID is normal, inspect the instrument cluster. (See INSTRUMENT CLUSTER INSPECTION ). |
| No | Repair or replace malfunctioning part, according to inspection results. | ||
| 5 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | 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 the Step 5. | ||
| Black | Rich fuel mixture is indicating. Go to the Step 6. | ||
| 2 | Remove and shake the PCV valve. Does the PCV valve rattle? | Yes | Go to the next step. |
| No | Replace the PCV valve. | ||
| 3 | Remove the parts necessary to inspect turbocharger without removing the turbocharger. Visually inspect for the turbocharger compressor housing. Is any engine oil found inside turbocharger compressor housing? | Yes | Install all parts removed in this step. Perform the following, according to inspection results. Excessive amount of oil is found: Replace the turbocharger. Small amount of oil is found: Wipe oil out of vehicle, then Go to the next step. |
| No | Turbocharger is normal. Install all parts removed in this step. Then, Go to the next step. | ||
| 4 | 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 Are there ant problem found? | Yes | Repair or replace suspected parts, according to the inspection results. |
| No | Engine internal parts are normal. If other driveability symptoms are present, return to diagnostic index to service additional symptoms. | ||
| 5 | Does cooling system hold the coolant pressure? (See ENGINE COOLANT LEAKAGE INSPECTION [L3 WITH TC] ). | Yes | Inspect for the following: Cylinder head gasket leakage Intake manifold gasket leakage Cracked or porous engine block If other driveability symptoms are present, return to diagnostic index to service additional symptoms. |
| No | Inspect for the cause. | ||
| 6 | Inspect for the following for intake-air system. Air cleaner restriction Collapsed or restricted Leakage Are all items normal? | Yes | Go to the next step. |
| No | Repair or replace the suspected part. | ||
| 7 | Connect the M-MDS to the DLC-2. Access following PIDs. ECT MAF IAT IAT2 APP TP MAP VSS O2S11 O2S12 LONGFT1 SHTFT1 Monitor the PIDs under the black smoke appeared engine condition. Do all PID indicate normal according to engine conditions? | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and the related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 8 | Inspect the wastegate. (See WASTEGATE ACTUATOR INSPECTION [L3 WITH TC] ). Does the wastegate stuck open? | Yes | Perform the WASTEGATE CONTROL SYSTEM OPERATION INSPECTION . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Repair or replace malfunctioning part according to the inspection results. |
| No | Go to the next step. | ||
| 9 | Connect the M-MDS to DLC-2. Access and monitor to following PIDs using the data monitor function. ECT MAF IAT IAT2 APP TP MAP VSS O2S11 O2S12 LONGFT1 SHTFT1 Do the PIDs indicate correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Inspect and repair or replace suspected parts and related harnesses. If the malfunction remains, perform the intermittent concern troubleshooting procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3 WITH TC] .) | ||
| 10 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to Step 14. |
| No | Go to the next step. | ||
| 11 | Is vehicle accelerate performance normal? | Yes | Go to the next step. |
| No | Go to Step 13. | ||
| 12 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to Step 14. |
| No | Replace the delivery pipe. | ||
| 13 | Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Retest Step 16. |
| No | Go to the next step. | ||
| 14 | Perform the SPARK TEST . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Inspect or replace the malfunctioning parts, according to the inspection results. | ||
| 15 | Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] ). Are compression pressures within the specification? | Yes | Inspect the fuel injector for each cylinder. (See FUEL INJECTOR INSPECTION [L3 WITH TC] ) |
| No | Inspect for the following: Damaged valve seat Worn valve stem and valve guide Worn or stuck piston ring Worn piston, piston ring or cylinder Improper valve timing Service if necessary. | ||
| 16 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Visually inspect fuel leakage at fuel line. Is there any fuel leakage? | Yes | Service if necessary. |
| No | Go to the next step. | ||
| 2 | Inspect the vacuum hose routine. (See VACUUM HOSE ROUTING DIAGRAM [L3 WITH TC] ). Are vacuum hose routings proper? | Yes | Go to the next step. |
| No | Reconnect the vacuum hose. | ||
| 3 | Perform the EVAPORATIVE EMISSION (EVAP) System Leak Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Is there any problem found? | Yes | Repair or replace suspected part according to the inspection results. |
| No | Go to the next step. | ||
| 4 | Inspect the airflow of purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION [L3 WITH TC] ). Is the purge solenoid airflow properly? | Yes | Go to the next step. |
| No | Replace the purge solenoid valve. | ||
| 5 | Connect the M-MDS to the DLC-2. Access the FUEL_PRESPID. Monitor the FUEL_PRES PID while idle and race the engine. Is the FUEL_PRES PID indicated 15 MPa {153 kgf/cm 2 , 2175 psi} or less? | Yes | Inspect the charcoal canister for fuel saturation. If excess amount of liquid fuel is present, replace the charcoal canister. |
| No | Inspect the fuel pressure sensor and the high pressure fuel pump. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). (See HIGH PRESSURE FUEL PUMP INSPECTION [L3 WITH TC] ). | ||
| 5 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Is the noise from the turbocharger? | Yes | Go to Step 8. |
| No | Go to the next step | ||
| 2 | Is squeal, click or chirp sound present? | Yes | Inspect the engine oil level, solenoid valves installation or drive belt tension. |
| No | Go to the next step. | ||
| 3 | Is rumble or grinding sound present? | Yes | Inspect and repair the following; Drive belt tension Loose parts in engine compartment Power steering system fluid level If normal, perform the power steering fluid line air bleed. (See AIR BLEEDING ). |
| No | Go to the next step. | ||
| 4 | Is rattle sound present? | Yes | Inspect the location of rattle for loose parts. |
| No | Go to the next step. | ||
| 5 | Is hiss sound present? | Yes | Inspect and repair the following; Vacuum leakage Spark plug looseness Intake-air system leakage |
| No | Go to the next step. | ||
| 6 | Is rap or roar sound present? | Yes | Inspect the exhaust system or loose parts. |
| No | Go to the next step. | ||
| 7 | Is knocking noise present? | Yes | Go to symptom troubleshooting " NO. 13 KNOCKING/ PINGING ". (See NO. 13 KNOCKING/PINGING [L3 WITH TC] .) |
| No | If noise comes from engine internal, inspect for the friction gear, timing chain or MLA noise. | ||
| 8 | Inspect the intake and exhaust housing system for loose installation. Is there any problem found? | Yes | Repair installation or replace suspected part. |
| No | Go to the next step. | ||
| 9 | Remove the parts necessary to inspect turbocharger without removing the turbocharger. Inspect if turbocharger compressor wheel is bent, damaged, or interfering with housing on vehicle. Is there any problem? | Yes | Replace the turbocharger. |
| No | Go to the next step. | ||
| 10 | Inspect the turbocharger compressor wheel locknut is loose or has fallen down inside turbocharger. Is there any problem? | Yes | Replace the turbocharger. |
| No | Go to the next step. | ||
| 11 | Turn the turbocharger compressor wheel by hand. Does the wheel turn easily and smoothly? | Yes | Go to the next step. |
| No | Replace the turbocharger. | ||
| 12 | Visually inspect the turbine housing. Is there any carbon built-up or foreign material on turbine housing? | Yes | Clean built-up carbon or remove foreign materials. If turbine housing damaged, replace the turbocharger. |
| No | Install the removal parts at Step 9, and inspect all turbocharger related parts installed correctly. | ||
| 13 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Inspect the following components for loose attaching bolts or worn parts: Cooling fan Condenser fan Drive belt and pulley Engine mounts Exhaust system Are all items normal? | Yes | Inspect the following systems: Wheels Transmission and mounts Driveline Suspension Service if necessary. |
| No | Readjust or retighten suspect parts installation position. Service if necessary for other parts. | ||
| 2 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Connect the M-MDS to the DLC-2. Turn the ignition switch to the ON position (Engine off). Retrieve any DTCs. Are there any OTCs displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. |
| No | No DTC is displayed: Go to the next step. | ||
| 2 | Disconnect the A/C compressor connector. Start the engine and turn the A/C switch on. Is there correct voltage at terminal of A/C compressor magnetic clutch connector? Specification 10.5 V or more | Yes | Inspect for the ground condition of magnetic clutch on A/C compressor. If ground condition is normal, inspect for an open circuit magnetic clutch coil. |
| No | Go to the next step. | ||
| 3 | Disconnect the refrigerant pressure switch connector. Connect jumper wire between terminals of A/C high-pressure switch connector. Connect jumper wires between terminals of refrigerant pressure switch connector. Turn the ignition switch to the ON position. Turn A/C switch on and set blower fan to any speed. Does A/C work? | Yes | Inspect the refrigerant pressure switch operation. If switch is normal, go to the next step. |
| No | Inspect for the following: A/C switch is stuck open. Open circuit between refrigerant pressure switch and PCM terminal 1AC Open circuit between blower motor fan switch and resistor (if blower motor does not operate) Evaporator temperature sensor and A/C amplifier | ||
| 4 | Remove jumper wire from switch connector. Reconnect connector to refrigerant pressure switch. Start engine and turn A/C switch on. Does fan operate? | Yes | Inspect the whether A/C relay is stuck open. Replace if necessary. |
| No | Inspect the following and repair or replace if necessary: Refrigerant charging amount A/C compressor for seizure | ||
| 5 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Connect the M-MDS to the DLC-2. Turn the ignition switch to the ON position (Engine off). Retrieve any DTCs. Are there any DTCs displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. |
| No | No DTC is displayed: Go to the next step. | ||
| 2 | Start the engine and idle it. Turn the A/C switch on. Remove the A/C relay. Does the A/C magnetic clutch disengage? | Yes | Inspect for the following: A/C relay is stuck closed. Short to ground circuit between A/C relay and PCM terminal 1I. If both items normal, go to the next step. |
| No | Inspect if circuit between A/C relay and magnetic clutch shorts to battery power circuit. If circuit is normal, inspect magnetic clutch for stuck engagement or clearance. | ||
| 3 | Disconnect the refrigerant pressure switch connector. Start the engine and turn the A/C switch on. NOTE: A/C should not work when disconnecting connector. If A/C remains working, short to ground circuit may be present. Does A/C remain working? | Yes | Inspect for a short to ground circuit between refrigerant pressure switch and PCM terminal 1AU. |
| No | Go to the next step. | ||
| 4 | Reconnect refrigerant pressure switch connector. Turn off A/C switch. NOTE: A/C should not work when turning A/C switch off. If A/C remains working, short to ground circuit may be present. Does A/C remain working? | Yes | Inspect for the following: Short to ground circuit between A/C switch and A/C amplifier Short to ground circuit between A/C amplifier and refrigerant pressure switch |
| No | Inspect whether A/C switch is stuck closed. | ||
| 5 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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 |
|---|
| A/C should not work when disconnecting connector. If A/C remains working, short to ground circuit may be present. |
| NOTE |
|---|
| A/C should not work when turning A/C switch off. If A/C remains working, short to ground circuit may be present. |
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Are any driveability or exhaust smoke concerns present? | Yes | Go to the appropriate flow chart. |
| No | Go to the next step. | ||
| 2 | Inspect for the following: Electrical connections Vacuum lines Fuel quality Are all items normal? | Yes | Go to the next step. |
| No | Service if necessary. Repeat Step 2. | ||
| 3 | Connect the M-MDS to the DLC-2. Turn the ignition switch to the ON position (Engine off). Retrieve any DTCs. Are there any DTCs displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. |
| No | No DTC is displayed: Go to the next step. | ||
| 4 | Access and monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to Step 8. |
| No | Go to the next step. | ||
| 5 | Is vehicle accelerate performance normal? | Yes | Go to the next step. |
| No | Go to Step 7. | ||
| 6 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to Step 8. |
| No | Go to the next step. | ||
| 7 | Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to Step 9. |
| No | Go to the next step. | ||
| 8 | Inspect the charcoal canister for fuel saturation. Is excess amount of liquid fuel present in canister? | Yes | Replace the charcoal canister. |
| No | Inspect the fuel tank vent system. If 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 parts. | ||
| 9 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | ACTION | |
|---|---|---|---|
| 1 | Connect the M-MDS to the DLC-2. Turn the ignition switch to the ON position (Engine off). Retrieve any DTCs. Are there any DTCs displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. |
| No | No DTC is displayed: Go to the next step. | ||
| 2 | Remove the fuel-filler pipe. Make sure nonreturn valve is installed properly. Inspect the nonreturn valve operation. Is nonreturn valve normal? | Yes | Inspect for the following: Improper use of fuel nozzle Inadequate fuel filling speed |
| No | Nonreturn valve is installed improperly: Reinstall the nonreturn valve to proper position. Nonreturn valve does not operate properly: Replace the nonreturn valve. | ||
| 3 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | ACTION | |
|---|---|---|---|
| 1 | Connect the M-MDS to the DLC-2. Turn the ignition switch to the ON position (Engine off). Retrieve any DTCs. Are there any DTCs displayed? | Yes | DTC is displayed: Go to the appropriate DTC test. |
| No | No DTC is displayed: Go to the next step. | ||
| 2 | Remove the fuel-filler pipe. Make sure nonreturn valve is installed properly. Inspect the nonreturn valve operation. Is nonreturn valve normal? | Yes | Inspect for the following: Improper use of fuel nozzle Fuel is not inserted correctly. Inspect fuel shut-off valve. |
| No | Nonreturn valve is installed improperly: Reinstall the nonreturn valve to proper position. Nonreturn valve does not operate properly: Replace the nonreturn valve. | ||
| 3 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Remove all the spark plugs. Inspect the spark plug condition. Is the spark plug condition normal? | Yes | Troubleshooting completed. |
| No | Specific plug is wet or covered with carbon: Go to the next step. Specific plug looks grayish white: Go to Step 9. All plugs are wet or covered with carbon: Go to Step 11. All plugs look grayish white: Go to Step 19. | ||
| 2 | Is the spark plug wet/covered with carbon from engine oil? | Yes | Inspect all areas related to oil. |
| No | Go to the next step. | ||
| 3 | Inspect the spark plugs for the following: Cracked insulator Heat range Air gap Worn electrode Is the spark plug normal? | Yes | Go to the next step. |
| No | Replace the spark plug. | ||
| 4 | Inspect the compression pressure at the suspected malfunctioning cylinder. Is the compression pressure correct? (See COMPRESSION INSPECTION [L3 WITH TC] ). | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning parts. | ||
| 5 | Install all the spark plugs. Perform the spark test at the suspected malfunctioning cylinder. Is a strong blue spark visible? (Compare with normal cylinder.) | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning parts. | ||
| 6 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Inspect the suspected cylinders fuel injector for the following: Open or short circuit in the fuel injector (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). |
| No | Go to the next step. | ||
| 7 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to the next step. |
| No | Replace the delivery pipe. | ||
| 8 | Inspect the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP INSPECTION [L3 WITH TC] ). Is the high pressure fuel pump normal? | Yes | Replace the delivery pipe. Retest Step 6 If the FUEL_PRES PID indication is other that the specification, replace the high pressure fuel pump. |
| No | Replace the high pressure fuel pump. | ||
| 9 | Inspect the spark plug for the following. Heat range Air gap Is the spark plug normal? | Yes | Go to the next step. |
| No | Replace the spark plug. | ||
| 10 | Perform the KOER self-test function using the M-MDS. (See KOEO/KOER SELF TEST [L3 WITH TC] ). Is the suspected cylinder injector circuit related DTC (P0201, P0202, P0203 or P0204) present? | Yes | Go to appropriate the DTC test. (See DTC TABLE [L3 WITH TC] ). |
| No | Inspect the suspect cylinder fuel injector for the following: Resistance (See FUEL INJECTOR INSPECTION [L3 WITH TC] ). | ||
| 11 | Is the air cleaner element free of blockage? | Yes | Go to the next step. |
| No | Replace the air cleaner element. | ||
| 12 | Perform the SPARK TEST . (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Is a strong blue spark visible at each cylinder? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning parts. | ||
| 13 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Go to step 16. |
| No | Go to the next step. | ||
| 14 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to the next step. |
| No | Replace the delivery pipe. | ||
| 15 | Inspect the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP INSPECTION [L3 WITH TC] ). Is the high pressure fuel pump normal? | Yes | Replace the delivery pipe. Retest Step 13. If the FUEL_PRES PID indication is other that the specification, replace the high pressure fuel pump. |
| No | Replace the high pressure fuel pump. | ||
| 16 | Inspect the following PIDs: ECT O2S11 (When engine can be started) MAF (See PCM INSPECTION [L3 WITH TC] ). Are the PIDs normal? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning parts. | ||
| 17 | Perform the purge control inspection. (When engine can be started) (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Is the purge control correct? | Yes | Go to the next step. |
| No | Repair or replace the malfunctioning parts. | ||
| 18 | Perform the compression inspection. Is the compression correct? | Yes | Inspect for clogging in the exhaust system. |
| No | Repair or replace the malfunctioning parts. | ||
| 19 | When the engine cannot be started, inspect the intake-air system for air leakage. When the engine can be started, perform the intake manifold vacuum inspection. Is air sucked in from the intake-air system? | Yes | Repair or replace the malfunctioning part. |
| No | Go to the next step. | ||
| 20 | Access and monitor the FUEL_PRES PID. Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Inspect for the following PIDs: ECT O2S11 O2S12 MAF (See PCM INSPECTION [L3 WITH TC] .) Inspect the PCM ground condition. |
| No | Go to the next step. | ||
| 21 | Is vehicle accelerate performance normal? | Yes | Go to the next step. |
| No | Go to Step 13. | ||
| 22 | Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] ). Is the fuel pressure sensor normal? | Yes | Go to the next step. |
| No | Replace the delivery pipe. | ||
| 23 | Replace the high pressure fuel pump. Monitor FUEL_PRES PID. Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] ). | Yes | Troubleshooting is completed. Go to the next step. |
| No | Inspect following PIDs. ECT O2S11 O2S12 MAF (See PCM INSPECTION [L3 WITH TC] ). Inspect PCM ground condition. | ||
| 24 | Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the 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. | ||
Intake Manifold Vacuum Inspection
- Verify air intake hoses are installed properly.
- Start the engine and run it idling.
- 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 as specified, inspect the following: Specification More than 60 kPa {450 mmHg, 18 inHg} NOTE: Air suction can be located by the engine speed change when lubricant is sprayed on the area where suction is occurring. Air suction at throttle body, charge air cooler, intake manifold and PCV valve installation points EGR valve (stuck open) Engine compression (See «COMPRESSION INSPECTION [L3 WITH TC]»(ref-343774-S27424874312009101500000) ).
Engine coolant temperature compensation inspection
- Connect the M-MDS to the DLC-2.
- Select the following PIDs: 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 and related wiring harness (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3 WITH TC]»(ref-343775-S28628017842009101500000) ). Electronic throttle body and related wiring harness (See «THROTTLE ACTUATOR INSPECTION [L3 WITH TC]»(ref-343780-S39000706122009101500000) ).
Load compensation inspection
- Start the engine and run it is idling.
- Connect the M-MDS to the DLC-2.
- Verify that DTC P0506 or P0507 is not displayed. If DTC P0506, or P0507 is displayed, perform the DTC inspection. (See «DTC TABLE [L3 WITH TC]»(ref-343763-S21425878652009101500000) ).
- Select the RPM PID. NOTE: Excludes temporary idle speed drop just after the loads are turned on.
- Verify that the engine speed is within the specification under each load condition. If the load condition is not as specified, inspect the following: A/C switch and related wiring harness (See «CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER]»(ref-343768-S27105894112009101500000) .) (See «CLIMATE CONTROL UNIT INSPECTION [MANUAL AIR CONDITIONER]»(ref-343768-S28566827692009101500000) ). Fan switch and related wiring harness (See «CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER]»(ref-343768-S27105894112009101500000) ). (See «CLIMATE CONTROL UNIT INSPECTION [MANUAL AIR CONDITIONER]»(ref-343768-S28566827692009101500000) ). PSP switch and related wiring harness (See «POWER STEERING PRESSURE (PSP) SWITCH INSPECTION [L3 WITH TC]»(ref-343775-S42771405722009101500000) ).
| Load condition | Engine speed (RPM) | |
|---|---|---|
| P, N position | D position | |
| No load | 650-750 | 575-675 |
| E/L operating (1) | 650-750 | 600-700 |
| P/S operating | 650-750 | 650-750 |
| A/C operating (Low load (2) ) | 650-750 | 600-700 |
| A/C operating (High load (3) ) | 680-780 | 680-780 |
| (1) When the following electrical loads are on: Headlights, rear defroster, cooling fan NO. 1, cooling fan NO. 2, and the blower motor (2-step or more.) (2) Refrigerant pressure switch (middle pressure switch) is off. (3) Refrigerant pressure switch (middle pressure switch) is on. | ||
| (1) | When the following electrical loads are on: Headlights, rear defroster, cooling fan NO. 1, cooling fan NO. 2, and the blower motor (2-step or more.) |
| (2) | Refrigerant pressure switch (middle pressure switch) is off. |
| (3) | Refrigerant pressure switch (middle pressure switch) is on. |
ENGINE SPEED
Throttle position (TP) sweep inspection
- Connect the M-MDS to the DLC-2.
- Reform the KOER self-test function. (See «KOEO/KOER SELF TEST [L3 WITH TC]»(ref-343763-S42250401722009101500000) ).
- Verify that none of the following DTCs are displayed: P0122, P0123, P0222, P0223, P2100, P2101, P2102, P2103, P2107, P2108, P2119, P2122, P2123, P2127, P2128, P2135, P2138 If any one DTC is displayed, perform the DTC inspection.
- Access the TP_REL PID.
- Verify that the PID reading is within the CTP value. (See «PCM INSPECTION [L3 WITH TC]»(ref-343775-S20146626282009101500000) ). If the PID reading is out of range, perform the following: Remove the air duct from the throttle valve body. Verify that the throttle valve opens when the accelerator pedal is depressed. If the throttle valve opens, inspect the throttle position sensor and the related wiring harness. If the throttle valve does not open, inspect the throttle actuator control motor and the related wiring harness.
- Gradually depress the throttle pedal and verify that the PID reading increases lineally. If the PID reading drops momentarily, inspect the following: Throttle position sensor
- Fully depress the throttle pedal and verify that the PID reading is within the WOT value. (See «PCM INSPECTION [L3 WITH TC]»(ref-343775-S20146626282009101500000) ). If the PID reading is out of range, perform the following: Remove the air duct from throttle valve body with connector connected. Verify that the throttle valve opens when throttle pedal is depressed. If the throttle valve opens, inspect the throttle position sensor and the related wiring harness. If the throttle valve does not open, inspect the throttle actuator control motor and the related wiring harness.
Fuel Cut Control System Inspection
Note. This inspection has to be performed after the Fuel Injector Operation Inspection.
If simulation 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 FUELPW1 PIDs.
- 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 FUELPW1 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 and related wiring harness (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3 WITH TC]»(ref-343775-S28628017842009101500000) ).
If simulation 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 [L3 WITH TC]»(ref-343775-S20146626282009101500000) ). If not as specified, inspect the following. ECT sensor and related wiring harness (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3 WITH TC]»(ref-343775-S28628017842009101500000) ).
Fuel Pump Control System Inspection
If simulation function of M-MDS is used
- Connect the M-MDS to the DLC-2.
- Turn the ignition switch to the ON position.
- Select the FP PID.
- 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. If the fuel pump relay is normal, inspect the following: Wiring harness and connectors (Main relay-fuel pump relay-PCM terminal 1H)
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 Wiring harness and connectors (Main relay-fuel pump relay-PCM terminal 1H)
Fuel Pump Speed Control Inspection
If simulation function of M-MDS is used
- Perform the «FUEL PUMP OPERATION INSPECTION»(ref-343773-S36196971392009101500000) .
- Connect the M-MDS to the DLC-2.
- Turn the ignition switch to the ON position.
- Turn the fuel pump speed control relay from off to on using the FPRR PID and verify that the fuel pump speed control relay operation sound is heard. If the operation sound is not heard, inspect the following: Fuel pump speed control relay Wiring harness and connectors (Main relay-fuel pump speed control relay-PCM terminal 1AA)
- Start the engine and run it is idling.
- Remove the fuel-filler cap.
- Turn the fuel pump speed control relay from off to on using the FPRR PID and inspect if the operation sound frequency of the fuel pump is higher than when the FPRR PID is off. If it cannot be verified, inspect the following: Fuel pump resister Wiring harness and connectors (open circuit at fuel pump speed control relay terminal C-fuel pump relay terminal D)
If simulation function of M-MDS is not used
- Perform the fuel pump operation inspection.
- Verify that fuel pump relay operation sound is heard, while cranking the engine. If the operation sound is not heard, inspect the following: Fuel pump relay Wiring harnesses and connectors (Main relay-fuel pump relay-PCM terminal 1H)
- Remove the fuel-filler cap.
- Verify that the fuel pump unit operation sound frequency at cranking is higher than during idle. If it cannot verified, inspect for the following: Fuel pump resister Fuel pump relay Wiring harnesses and connectors (open circuit at fuel pump relay terminal C-fuel pump terminal B)
Spark Test
- Disconnect the fuel pump 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 coil from the spark plugs. Remove the spark plugs. Verify that the spark plugs do not have carbon deposits. Are the spark plugs normal? | Yes | Go to the next step. |
| No | Perform no-load racing at 4,000 RPM for 2 min, 2 times to burn off the carbon deposits. Repeat Step 1. | ||
| 2 | Inspect the spark plugs for damage, wear, and proper plug gap. Are the spark plugs normal? | Yes | Go to the next step. |
| No | Replace spark plugs, then 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 | Inspect the following wiring harnesses for an open or short circuit: Ignition coil NO. 1 terminal C-PCM terminal 2BA Ignition coil NO. 2 terminal C-PCM terminal 2AW Ignition coil NO. 3 terminal C-PCM terminal 2AX Ignition coil NO. 4 terminal C-PCM terminal 2AT Are the wiring harnesses normal? | Yes | Inspect and replace the ignition coil. (See IGNITION COIL INSPECTION [L3 WITH TC] ). |
| No | Repair or replace the malfunctioning part, then go to Step 1. | ||
| 5 | Measure the voltage at terminal A in each ignition coils. Is the voltage B+ ? | Yes | Go to the next step. |
| No | Inspect the power supply circuit of ignition coils. | ||
| 6 | Does the PCM connector or ignition coil connectors have poor connection? | Yes | Repair or replace the connector, then go to Step 1. |
| No | Go to the next step. | ||
| 7 | Are the following parts normal? CKP sensor and crankshaft pulley | Yes | Inspect for an open or short circuit in the wiring harness and connector of the CKP sensor. |
| No | Repair or replace the malfunctioning part, then go to Step 1. | ||
EGR Control System Inspection
If simulation function of M-MDS is used
- Crank the engine and verify that the EGR valve operation (initial operation) sound is heard. If the operation sound is not heard, connect the M-MDS to the DLC-2 and verify that the DTC P0403 is shown. Perform the DTC inspection. (See «DTC TABLE [L3 WITH TC]»(ref-343763-S21425878652009101500000) ).
- Start the engine run it at idling.
- Increase the step value of the EGR valve from 0 to 57 using the SEGR PID of the simulation function.
- Operate the EGR valve and inspect if the engine speed becomes unstable or the engine stalls. If the engine speed does not change, proceed to the following. Stop the engine. Remove the EGR valve. Connect the EGR valve connector. Turn the ignition switch to the ON position. Increase the step value of EGR valve from 0 to 57 using SEGRP PID. Verify that the EGR valve operates according to the SEGRP PID. If the EGR valve is operated, clean the EGR valve and the EGR gas passage. If the EGR valve does not operate, replace the EGR valve.
- Start the engine and warm it up completely.
- Access the following PIDs. ECT, RPM, SEGRP, APP1, APP2, TP_REL, VSS
- Idle the vehicle and verify that the SEGRP value is 0.
- Put the vehicle in drive.
- Depress the accelerator pedal and verify that the SEGRP value increases. If the SEGRP value does not increase, inspect the VSS, TP and ECT PIDs. (See «PCM INSPECTION [L3 WITH TC]»(ref-343775-S20146626282009101500000) ).
- Stop the vehicle and verify that the SEGRP value is returns to 0.
If simulation function of M-MDS is not used
- Verify that EGR valve operation (initial operation) sound is heard when the ignition switch is turned to the ON position. If the operation sound is not heard, connect the M-MDS to the DLC-2 and verify that the DTC P0403 is shown. Perform the DTC inspection. (See «DTC TABLE [L3 WITH TC]»(ref-343763-S21425878652009101500000) ).
- Start the engine and idle it.
- Warm up the engine to normal operating temperature.
- Select the following PIDs: ECT, RPM, SEGRP, APP1, APP2, TP_REL, VSS
- Let the vehicle idle and verify that the SEGRP value is 0.
- Put the vehicle in drive.
- Depress the accelerator pedal and verify that the SEGRP value is increased. If the EGR valve increases, inspect the following: EGR valve (stuck open or closed) Wiring harness and connectors (Main relay-EGR valve-PCM) If the SEGRP value does not increase, inspect the VSS, APP1, APP2, TP_REL and ECT PIDs. (See «PCM INSPECTION [L3 WITH TC]»(ref-343775-S20146626282009101500000) ).
- Stop the vehicle and verify that the SEGRP value returns to 0.
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 2AB) Purge solenoid valve (stuck open)
- Connect the M-MDS to the DLC-2 and verify that the DTC P0403 is displayed. Perform the DTC inspection. (See «DTC P0403 [L3 WITH TC]»(ref-343763-S00562769482009101500000) ).
- 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 [L3 WITH TC]»(ref-343781-S01124419762009101500000) ).
- 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. If the EVAPCP PID is 0%, inspect the following. MAF, APP1, APP2, TP_REL and LOAD PIDs.
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 vacuum, inspect the following: Wiring harness and connectors (Purge solenoid valve-PCM terminal, 2AB) Purge solenoid valve
- Warm up the engine to the normal operating temperature.
- Stop the engine.
- Connect the M-MDS to the DLC-2 and verify that the DTC P0443 is shown. Perform DTC inspection. (See «DTC TABLE [L3 WITH TC]»(ref-343763-S21425878652009101500000) ).
- Turn the ignition switch to the ON position.
- Select the ECT PID.
- 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 inspection.
- Set the vehicle on the 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 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 2AB) Purge solenoid valve MAF, APP1, APP2, TP_REL and LOAD PIDs If there is vacuum, inspect the following: Vacuum hose (Purge solenoid valve-charcoal canister)
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, go to symptom troubleshooting " «NO. 23 A/C DOES NOT WORK SUFFICIENTLY»(ref-343773-S02416600302009101500000) ".
- 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 as follows: A/C relay Open or short to ground circuit in the wiring harness and connectors (Ignition switch-A/C relay-PCM terminal 11) A/C related parts APP1, APP2 PIDs
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 [L3 WITH TC]»(ref-343763-S42250401722009101500000) ).
- Verify that the DTC P0480 is not shown and the cooling fan operates during the KOER self-test. If DTC P0480 is shown, perform the DTC troubleshooting procedure. (See «DTC P0480 [L3 WITH TC]»(ref-343763-S29002434682009101500000) ). If the cooling fans do not operate, proceed to the following: Verify the clicking sound of the cooling fan relay when the ignition switch is turned from the off to the ON position. If there is no the clicking sound, inspect the cooling fan relay for an open circuit between the ignition switch and the cooling fan relay. If there is a clicking sound, go to the next step. Inspect the following parts in the indicated order in accordance with fan operation conditions.
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 leak inspection using the M-MDS
Note. EVAP system test outline
- The EVAP system test, which can substituted for the run-drive cycle as an EVAP control system repair confirmation method, can be done while operating the M-MDS in the KOEO (Key On Engine Off) condition instead of actually driving the vehicle.
EVAP system test description
Scheme 13
Scheme 14
- The EVAP system test finds gas leaks in the system using the PCM to monitor changes in the air pump load current of the EVAP system leak detection pump. This test starts after sending an on-demand test signal from the M-MDS to the PCM. The PCM controls the air pump and change-over-valve operation and also stores the load current of the air pump as follows: The PCM turns the air pump on and retrieves the air pump load current value (LDP_MON PID) as a reference current (LDP_REF PID). After retrieving the reference current value, the PCM commands the change-over-valve to open, then captures the air pump load current value (LDP_MON PID) as the idle current (LDP_IDL PID). The EVAP system will be pressurized from this phase. The PCM continues to monitor the air pump load current value (LDP_MON PID) until the end of the test.
- You can confirm whether any EVAP gas leak has occurred or not by reading the test results.
EVAP system malfunction judgment
- The PCM calculates the stored air pump load current value and sends the results to the M-MDS as DTCs
| DTC No. | Condition |
|---|---|
| P0442 | EVAP control system leak detected (small leak) |
| P0446 | Change over valve (COV) (EVAP system leak detection pump) stuck closed |
| P0455 | EVAP control system leak detected (gross leak) |
| P0456 | EVAP control system leak detected (very small leak) |
| P2401 | EVAP system leak detection pump motor circuit low |
| P2402 | EVAP system leak detection pump motor circuit high |
| P2404 | EVAP system leak detection pump sensor circuit malfunction |
| P2405 | EVAP system leak detection pump sensor circuit low input |
| P2407 | EVAP system leak detection pump sensor circuit intermittent |
Evaporative system test procedure
- Select the EVAP system test from the Toolbox on the M-MDS display and follow the instructions.
- Verify that all of the following PIDs are within the specifications at the pre-test confirmation screen. NOTE: To successfully perform this procedure, all PIDs must be within the following specifications before proceeding to the next step. The PCM will cancel the EVAP system test if the B+ PID value falls lower than 11. 0 V during the test. SPECIFICATION PID PID Range BARO 72.2 kPa {543 mmHg, 21.3 inHg} or more FLI 15-85% IAT 5-45°C{41-113°F} B+ 11.0 V or more
- Start the engine.
- Drive the vehicle or let the engine idle more than 20 min.
- Turn the ignition switch off, then turn it to the ON position again (Key On Engine Off).
- Press the tick icon to start the test.
- Verify that no DTCs are present after the completion of the test. If any test result is indicated with red, diagnose the problem using the following DTC troubleshooting procedure or component inspection procedure. If any DTCs are detected, diagnose the problem using the appropriate DTC troubleshooting procedure.
Scheme 15
Scheme 16
- Perform the following SST (EVAP System Tester 134-01049) 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 {13-15 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. 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 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. Connect the receiver assembly (SST: 134-01059) to the vehicle cap test hose assembly (part of 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.
- Turn the ignition switch to the ON position (Engine off).
- Request the PCM on-board device control (Mode 08) using the M-MDS to close the change-over valve (COV) in the EVAP system leak detection pump. NOTE: The COV is closed for 10 min unless any of the following actions are performed: The engine is started. The ignition switch is turned off.
- Make sure the control valve on the 134-01049 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 cut or vent valve is properly closed.
- Verify the 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 pre-set pressure of 356 mm {14 in} of water (H2O). EVAPORATIVE LEAK: The pressure does not return to the preset level of 356 mm {14 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.