Symptom Troubleshooting [L3 with Tc] - Engine: Diagnosis — Mazda CX-7 I рестайлинг (2009-2012)

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 incorrectly.
3	Will not crank		Starter does not work.
4	Hard to start/long crank/erratic start/erratic crank		Starter cranks the engine at normal speed but the engine requires excessive cranking time before starting. Battery is operating normally.
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. Refer to symptom troubleshooting " NO.5 ENGINE STALLS " if this symptom appears after the engine stalls. Fuel is in tank. Battery is in normal condition.
7	Slow return to idle		Engine takes more time than normal to return to idle speed. Engine speed continues at fast idle after warm-up.
8	Engine runs rough/rolling idle		Engine speed fluctuates between the specified idle speed and lower speed, and engine shakes excessively. Idle speed is too slow and the engine shakes excessively.
9	Fast idle/runs on		Engine speed continues at fast idle after warm-up. Engine runs after the 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		Sound is produced when air/fuel mixture is ignited by something other than a spark plug (e.g., hot spot in the 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 the 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 wide open throttle conditions		A/C compressor magnetic clutch does not disengage under WOT.
26	Exhaust sulphur smell		Rotten egg smell (sulphur) from exhaust.
27	Fuel refill concerns		Fuel tank does not fill smoothly.
28	Fuel filling shut off issues		Fuel does not shut off properly.
29	Spark plug condition		Incorrect spark plug condition.

DIAGNOSTIC INDEX

Scheme 3

Scheme 3: CONTROL SYSTEM DEVICE AND CONTROL RELATIONSHIP CHART [L3 WITH TC]

Scheme 4

Scheme 5

Scheme 5: QUICK DIAGNOSTIC CHART [L3 WITH TC]

Scheme 6

Scheme 7

Scheme 8

Scheme 9

Scheme 10

Scheme 11

Scheme 12

Scheme 12: FOREWORD [L3 WITH TC]

When the customer reports a vehicle malfunction, check the malfunction indicator lamp (MIL) indication and diagnostic trouble code (DTC), then diagnose the malfunction according to the following flowchart: If a DTC exists, diagnose the applicable DTC inspection. (See «DTC TABLE [L3 WITH TC]»(ref-375324-S26001231552010102800000) .) If no DTC exists and the MIL does not illuminate or flash, diagnose the applicable symptom troubleshooting. (See «QUICK DIAGNOSTIC CHART [L3 WITH TC]»(ref-375325-S17898804322010102800000) .)

Diagnostic procedure

STEP	INSPECTION	RESULTS	ACTION
1	Connect the M-MDS to the DLC-2. Turn the ignition switch to the ON position. Retrieve any DTCs. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Are there DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
1		No	Inspect for an open or short to circuit between instrument cluster terminal 2T and PCM terminal 1 AI. 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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	NOTE: The following test should be performed on the advanced keyless entry and start 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 and start system and repair or replace according to the inspection result.
1		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.
2		No	Either or other condition appears: Go to the next step.
3	Is the coil antenna connector securely connected?	Yes	Go to the next step.
3	Is the coil antenna connector securely connected?	No	Connect the connector securely, retest from Step 2.
4	Does the security light illuminate?	Yes	Go to the next step.
4	Does the security light illuminate?	No	Inspect and repair or replace the following: Instrument cluster (See INSTRUMENT CLUSTER INSPECTION .) (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .) With advanced keyless entry and start system: Between keyless control module terminal 3X and instrument cluster terminal 2R Between keyless control module terminal 3W and instrument cluster terminal 2T Without advanced keyless entry and start system: Between PCM terminal 1AM and instrument cluster terminal 2R Between PCM terminal 1 AI and instrument cluster terminal 2T
5	Retrieve immobilizer system DTCs using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)] .) (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)] .) (See DTC TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)] .)
5		No	Go to the next step.
6	Is there continuity between PCM terminal 1BD, 1AZ, 1BH and ground?	Yes	Go to the next step.
6		No	Repair or replace the suspected wiring harness.
7	Turn the ignition switch to the ON position (engine off). Measure voltage between PCM terminal 1 BD, 1AZ, 1BH and ground. Is the voltage below 1.0 V?	Yes	Go to the next step.
7		No	Repair or replace the suspected wiring harness.
8	Turn the ignition switch to the ON position (engine off). Access the VPWR PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the VPWR PID B+ ?	Yes	Go to the next step.
8		No	Repair or replace the suspected wiring harness.
9	Disconnect the coil antenna connector. Turn the ignition switch to the ON position (engine off). Is there battery voltage at coil antenna connector terminal D?	Yes	Go to the next step.
9		No	Repair or replace the wiring harness between coil antenna connector terminal D and the fuse panel.
10	Inspect the following wiring harness and connectors: With advanced keyless entry and start system: Between coil antenna terminal A and keyless control module terminal 3V Between coil antenna terminal B and keyless control module terminal 3U Without advanced keyless entry and start system: Between coil antenna terminal A and instrument cluster terminal 2Q Between coil antenna terminal B and instrument cluster terminal 2S Is there any malfunction (open or short circuit, terminal corrosion, etc.)?	Yes	Repair or replace the malfunctioning part according to the inspection results.
10		No	With advanced keyless entry and start system: Go to the next step. Without advanced keyless entry and start system: Go to Step 15.
11	Is there continuity between the keyless control module harness-side connector terminal 2B and body ground?	Yes	Go to the next step.
11		No	Repair or replace the suspected wiring harness.
12	Turn the ignition switch to the ON position. Measure the voltage between keyless control module harness-side connector terminal 2B and body ground. Is the voltage below 1.0V?	Yes	Go to the next step.
12		No	Repair or replace the suspected wiring harness.
13	Turn the ignition switch to the ON position (engine off). Measure the voltage between keyless control module harness-side connector terminal 2A, 2C, 2E and body ground. Is the voltage B+ ?	Yes	Go to the next step.
13		No	Repair or replace the suspected wiring harness.
14	Inspect the following wiring harnesses and connectors. Between keyless control module terminal 3W and PCM terminal 1AI Between keyless control module terminal 3X and PCM terminal 1AM Is there any malfunction (open or short circuit, terminal corrosion, etc.)?	Yes	Repair or replace the malfunctioning part according to the inspection results.
14		No	Go to the next step.
15	Turn the ignition switch off. Disconnect the coil antenna connector. Turn the ignition switch to the ON position (engine off). Measure the voltage between coil antenna harness-side connector terminal D and body ground. Is the voltage B+ ?	Yes	Go to the next step.
15		No	Repair or replace the suspected wiring harness.
16	Inspect the following: Battery connection Battery condition (See BATTERY INSPECTION [L3 WITH TC] .) Fuses (See NO.1 MELTING OF MAIN OR OTHER FUSES [L3 WITH TC] .) Are all items normal?	Yes	Go to the next step.
16		No	Service if necessary. Repeat Step 16.
17	Is clicking sound heard from starter relays (NO.1 and NO.2) when the ignition switch is turned to START?	Yes	Go to Step 21.
17		No	Go to the next step.
18	Connect the M-MDS to the DLC-2. Access and monitor the TCM PID TR. (See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [AW6A-EL, AW6AX-EL] .) Does the TR PID indicate normally according to select lever position?	Yes	Go to the next step.
18		No	Inspect the TR 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 A5 TCM terminal A9 and GND Are they normal?	Yes	Go to the next step.
19		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.
20		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.
21		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.
22		No	Repair or replace as required.
23	Inspect for seized or hydrolock engine or driveplate. Is the engine seized or hydrolock?	Yes	Repair or replace components as required.
23		No	Go to the next step.
24	Connect the M-MDS to the DLC-2. Retrieve any continuous memory DTCs. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) 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 2 and PCM terminal 1AT Open circuit in wiring harness between main relay terminal 5 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, 1AZ, 1BG, 1BD or 1BH) Poor connection of vehicle body GND
24		No	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	Go to the appropriate DTC inspection. (See DTC TABLE [L3 WITH TC] .)
25		No	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 and start system. If not equipped, go to the next step.

DIAGNOSTIC PROCEDURE

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.
1		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is a DTC displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
2		No	Go to the next step.
3	Access the ECT PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Verify that the ECT PID is less than 116°C {241°F} during driving. Is the ECT PID less than specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to the next step.
3		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.
4	Will the engine run smoothly at part throttle?	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.
5		No	Inspect or replace the malfunctioning parts, according to the inspection results.
6	Perform the EGR Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly?	Yes	Go to the next step.
6		No	Inspect or replace the malfunctioning parts, according to the inspection results.
7	Perform the Purge Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge solenoid valve work properly?	Yes	Go to the next step.
7		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.
8		No	Go to the next step.
9	Access and monitor the following PIDs using the data monitor function. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) 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.
9		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] .)
10	Inspect for restriction in the exhaust system and the TWC. Is there any restriction?	Yes	Repair or replace the malfunctioning part according to the inspection results.
10		No	Go to the next step.
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.
11		No	Inspect or replace the malfunctioning parts, according to the inspection results.
12	Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 17.
12		No	Go to the next step.
13	Is the vehicle accelerate performance normally?	Yes	Go to the next step.
13	Is the vehicle accelerate performance normally?	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.
14		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
15	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to Step 21.
15		No	Replace the fuel delivery pipe. (Relief valve malfunction) (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
16	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.
16		No	Inspect for the following: Fuel line restriction Fuel filter clogging If normal: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [L3 WITH TC] .)
17	Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Do fuel injectors operate normally?	Yes	Go to the next step.
17		No	Repair or replace the malfunctioning part according to the inspection results.
18	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.
18		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	Inspect the starting system. (See STARTER INSPECTION [L3 WITH TC] .) Does the starting system work properly?	Yes	Go to the next step.
19		No	Repair or replace the malfunctioning part according to the inspection results.
20	Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [L3 WITH TC] .) Is the PCV valve normal?	Yes	Replace the PCM (injector driver circuit malfunction). (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .) If the problem remains: Repair or replace the malfunctioning part according to the inspection results.
20		No	Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [L3 WITH TC] .)
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.

DIAGNOSTIC PROCEDURE

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 are appear: Go to Step 5.
1		No	Either or other condition appears: Go to the next step.
2	Does the engine stall after approx. 2 s from when it is started?	Yes	Go to the next step.
2		No	Is the immobilizer system is normal? If normal: Go to Step 15.
3	Is the coil antenna connector securely connected to coil antenna?	Yes	Go to the next step.
3		No	Connect the connector securely, retest from Step 2.
4	Does the security light illuminate?	Yes	Go to the next step.
4	Does the security light illuminate?	No	Inspect and repair or replace the following: Instrument cluster (See INSTRUMENT CLUSTER INSPECTION .) (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .) With advanced keyless entry and start system: Between keyless control module terminal 3X and instrument cluster terminal 2R Between keyless control module terminal 3W and instrument cluster terminal 2T Without advanced keyless entry and start system: Between PCM terminal 1AM and instrument cluster terminal 2R Between PCM terminal 1AI and instrument cluster terminal 2T
5	Retrieve immobilizer system DTCs using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)] .) (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)] .) (See DTC TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)] .)
5		No	Go to the next step.
6	Is there continuity between PCM terminal 1BD, 1AZ, 1BH and ground?	Yes	Go to the next step.
6		No	Repair or replace the suspected 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 1.0 V ?	Yes	Go to the next step.
7		No	Repair or replace the suspected wiring harness.
8	Turn the ignition switch to the ON position (engine off). Access the VPWR PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the VPWR PID B+?	Yes	Go to the next step.
8		No	Repair or replace the suspected wiring harness.
9	Disconnect the coil antenna connector. Turn the ignition switch to the ON position (engine off). Is there battery voltage at coil antenna connector terminal D?	Yes	Go to the next step.
9		No	Repair or replace the wiring harness between coil antenna connector terminal D and the fuse panel.
10	Inspect the following wiring harness and connectors: With advanced keyless entry and start system: Between coil antenna terminal A and keyless control module terminal 3V Between coil antenna terminal B and keyless control module terminal 3U Without advanced keyless entry and start system: Between coil antenna terminal A and instrument cluster terminal 2Q Between coil antenna terminal B and instrument cluster terminal 2S Is there any malfunction (open or short circuit, terminal corrosion, etc.)?	Yes	Repair or replace malfunction part.
10		No	With advanced keyless entry and start system: Go to the next step. Without advanced keyless entry and start system: Go to Step 14.
11	Is there continuity between the keyless control module harness-side connector terminal 2B and body ground?	Yes	Go to the next step.
11		No	Repair or replace the suspected wiring harness.
12	Turn the ignition switch to the ON position. Measure the voltage between keyless control module harness-side connector terminal 2B and body ground. Is the voltage below 1.0 V?	Yes	Go to the next step.
12		No	Repair or replace the suspected wiring harness.
13	Turn the ignition switch to the ON position (engine off). Measure the voltage between keyless control module harness-side connector terminal 2A, 2C, 2E and body ground. Is the voltage B+ ?	Yes	Go to the next step.
13		No	Repair or replace the suspected wiring harness.
14	Inspect the following wiring harnesses and connectors. Between keyless control module terminal 3W and PCM terminal 1AI Between keyless control module terminal 3X and PCM terminal 1AM Is there any malfunction (open or short circuit, terminal corrosion, etc.)?	Yes	Repair or replace the malfunctioning part according to the inspection results.
14		No	Go to the next step.
15	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.
15		No	Service if necessary. Repeat Step 15.
16	Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the DTC displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
16		No	Go to the next step.
17	Access the ECT PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Verify that the ECT PID is less than 116°C {241°F} during driving. Is the ECT PID less than specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to the next step.
17		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] .)
18	Access the VPWR PID. Turn the ignition switch to the ON position (engine off). (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Does the VPWR PID indicate B+ ?	Yes	Go to the next step.
18		No	Repair or replace the wiring harness between main relay terminal 5 and PCM terminal 1 BE and 2E.
19	Perform the A/C Cut-off Control System 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.
19		No	Repair or replace the malfunctioning part according to the inspection results.
20	Will the engine run smoothly at part throttle?	Yes	Go to the next step.
20	Will the engine run smoothly at part throttle?	No	Go to Step 22.
21	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.
21		No	Inspect or replace the malfunctioning parts, according to the inspection results.
22	Perform the EGR Control System Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does EGR system operate properly?	Yes	Go to the next step.
22		No	Inspect or replace the malfunctioning parts, according to the inspection results.
23	Perform the Purge Control System Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge solenoid valve work properly?	Yes	Go to the next step.
23		No	Inspect or replace the malfunctioning parts, according to the inspection results.
24	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.
24		No	Inspect or replace the malfunctioning parts, according to the inspection results.
25	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.
25		No	Go to the next step.
26	Access and monitor the following PIDs using the data monitor function (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) ECT APP1 APP2 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.
26		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] .)
27	Inspect for restriction in the exhaust system and TWC Is there any restriction?	Yes	Repair or replace the malfunctioning part according to the inspection results.
27		No	Go to the next step.
28	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.
28		No	Inspect or replace the malfunctioning parts, according to the inspection results.
29	Access and monitor the FUEL PRES PID (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 33.
29		No	Go to the next step.
30	Is the vehicle accelerate performance normally?	Yes	Go to the next step.
30	Is the vehicle accelerate performance normally?	No	Go to Step 32.
31	Inspect the fuel pressure sensor (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] .) Is the fuel pressure sensor normal?	Yes	Go to Step 33.
31		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
32	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to Step 37.
32		No	Replace the fuel delivery pipe. (Relief valve malfunction) (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
33	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.
33		No	Inspect for the following: Fuel line restriction Fuel filter clogging If normal: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [L3 WITH TC] .)
34	Perform the Fuel Injector Operation Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Do fuel injectors operate normally?	Yes	Go to the next step.
34		No	Repair or replace the malfunctioning part according to the inspection results.
35	Measure the compression pressure for each cylinder (See COMPRESSION INSPECTION [L3 WITH TC] .) Are the compression pressures within the specification?	Yes	Go to the next step.
35		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.
36	Inspect the PCV valve (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [L3 WITH TC] .) Is the PCV valve normal?	Yes	Replace the PCM (injector driver circuit malfunction). (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .) If the problem remains: Repair or replace the malfunctioning part according to the inspection results.
36		No	Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [L3 WITH TC] .)
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.

DIAGNOSTIC PROCEDURE

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 are appear: Go to Step 5.
1		No	Either or other condition appears: Go to the next step.
2	Does the engine stall after approx. 2 s from when it is started?	Yes	Go to the next step.
2		No	Is the Is the immobilizer system is normal. Go to Step 15.
3	Is the coil antenna connector securely connected to coil antenna?	Yes	Go to the next step.
3		No	Connect the connector securely, retest from Step 1.
4	Does the security light illuminate?	Yes	Go to the next step.
4	Does the security light illuminate?	No	Inspect and repair or replace the following: Instrument cluster (See INSTRUMENT CLUSTER INSPECTION .) (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .) With advanced keyless entry and start system: Between keyless control module terminal 3X and instrument cluster terminal 2R Between keyless control module terminal 3W and instrument cluster terminal 2T Without advanced keyless entry and start system: Between PCM terminal 1AM and instrument cluster terminal 2R Between PCM terminal 1AI and instrument cluster terminal 2T
5	Retrieve immobilizer system DTCs using the M-MDS (See DTC INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)] .) (See DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)] .) (See DTC TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)] .)
5		No	Go to the next step.
6	Is there continuity between PCM terminal 1BD, 1AZ, 1BH and ground?	Yes	Go to the next step.
6		No	Repair or replace the suspected 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 1.0 V ?	Yes	Go to the next step.
7		No	Repair or replace the suspected wiring harness.
8	Turn the ignition switch to the ON position (engine off) Access the VPWR PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the VPWR PID B+ ?	Yes	Go to the next step.
8		No	Repair or replace the suspected wiring harness.
9	Disconnect the coil antenna connector Turn the ignition switch to the ON position (engine off). Is there battery voltage at coil antenna connector terminal D?	Yes	Go to the next step.
9		No	Repair or replace the wiring harness between coil antenna connector terminal D and the fuse panel.
10	Inspect the following wiring harness and connectors: With advanced keyless entry and start system: Between coil antenna terminal A and keyless control module terminal 3V Between coil antenna terminal B and keyless control module terminal 3U Without advanced keyless entry and start system: Between coil antenna terminal A and instrument cluster terminal 2Q Between coil antenna terminal B and instrument cluster terminal 2S Is there any malfunction (open or short circuit, terminal corrosion, etc.)?	Yes	Repair or replace the malfunctioning part according to the inspection results.
10		No	With advanced keyless entry and start system: Go to the next step. Without advanced keyless entry and start system: Go to Step 14.
11	Is there continuity between the keyless control module harness-side connector terminal 2B and body ground?	Yes	Go to the next step.
11		No	Repair or replace the suspected wiring harness.
12	Turn the ignition switch to the ON position Measure the voltage between keyless control module harness-side connector terminal 2B and body ground. Is the voltage below 1.0 V?	Yes	Go to the next step.
12		No	Repair or replace the suspected wiring harness.
13	Turn the ignition switch to the ON position (engine off) Measure the voltage between keyless control module harness-side connector terminal 2A, 2C, 2E and body ground. Is the voltage B+ ?	Yes	Go to the next step.
13		No	Repair or replace the suspected wiring harness.
14	Inspect the following wiring harnesses and connectors. Between keyless control module terminal 3W and PCM terminal 1AI Between keyless control module terminal 3X and PCM terminal 1AM Is there any malfunction (open or short circuit, terminal corrosion, etc.)?	Yes	Repair or replace the malfunctioning part according to the inspection results.
14		No	Go to the next step.
15	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 to the next step.
15		No	Service if necessary. Repeat Step 15.
16	Perform the self-test function using the M-MDS Turn the ignition switch to the ON position. Retrieve any DTCs. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is a DTC displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
16		No	Go to the next step.
17	Access the ECT PID using the M-MDS (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Verify that the ECT PID is less than 116°C {241°F} during driving. Is the ECT PID less than specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to the next step.
17		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] .)
18	Does the engine start with throttle close?	Yes	Go to the next step.
18	Does the engine start with throttle close?	No	Go to Step 24.
19	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.
19		No	Inspect or replace the malfunctioning parts, according to the inspection results.
20	Will the engine start and run smoothly at part throttle?	Yes	Go to the next step.
20	Will the engine start and run smoothly at part throttle?	No	Go to Step 22.
21	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.
21		No	Inspect or replace the malfunctioning parts, according to the inspection results.
22	Access the RPM PID using the M-MDS (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the RPM PID indicating engine speed when the cranking engine.	Yes	Go to the next step.
22		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?
23	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 to the inspection results.
23		No	Go to the next step.
24	Perform the EGR Control System Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does EGR system operate properly?	Yes	Go to the next step.
24		No	Inspect or replace the malfunctioning parts, according to the inspection results.
25	Perform the Purge Control System Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge solenoid valve work properly?	Yes	Go to the next step.
25		No	Inspect or replace the malfunctioning parts, according to the inspection results.
26	Access and monitor the following PIDs using the data monitor function (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) ECT APP1 APP2 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.
26		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] .)
27	Inspect for restriction in the exhaust system and TWC Is there any restriction?	Yes	Repair or replace the malfunctioning part according to the inspection results.
27		No	Go to the next step.
28	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.
28		No	Inspect or replace the malfunctioning parts, according to the inspection results.
29	Access and monitor the FUEL PRES PID (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 33.
29		No	Go to the next step.
30	Is the vehicle accelerate performance normally?	Yes	Go to the next step.
30	Is the vehicle accelerate performance normally?	No	Go to Step 32.
31	Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] .) Is the fuel pressure sensor normal?	Yes	Go to Step 33.
31		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
32	Replace the high pressure fuel pump (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to Step 37.
32		No	Replace the fuel delivery pipe. (Relief valve malfunction) (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
33	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.
33		No	Inspect for the following: Fuel line restriction Fuel filter clogging If normal: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [L3 WITH TC] .)
34	Perform the Fuel Injector Operation Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Do fuel injectors operate normally?	Yes	Go to the next step.
34		No	Repair or replace the malfunctioning part according to the inspection results.
35	Measure the compression pressure for each cylinder (See COMPRESSION INSPECTION [L3 WITH TC] .) Are the compression pressures within the specification?	Yes	Go to the next step.
35		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.
36	Inspect the PCV valve (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [L3 WITH TC] .) Is the PCV valve normal?	Yes	Replace the PCM (injector driver circuit malfunction). (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .) If the problem remains: Repair or replace the malfunctioning part according to the inspection results.
36		No	Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [L3 WITH TC] .)
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.

DIAGNOSTIC PROCEDURE

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.
1		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is a DTC displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
2		No	Go to the next step.
3	Access the ECT PID (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) 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.
3		No	Perform the 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 to the ECT PID value?	Yes	Go to the next step.
4		No	Perform the Cooling Fan Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
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.
5		No	Go to the next step.
6	Access and monitor the following PIDs using the data monitor function (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) ECT APP1 APP2 MAF PSP (PCM terminal 1AD) Do the PIDs indicate the correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to the next step.
6		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 (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 11.
7		No	Go to the next step.
8	Is the vehicle accelerate performance normally?	Yes	Go to the next step.
8	Is the vehicle accelerate performance normally?	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.
9		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
10	Replace the high pressure fuel pump (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to Step 13.
10		No	Replace the fuel delivery pipe. (Relief valve malfunction) (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
11	Perform the Fuel Injector Operation Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Do fuel injectors operate normally?	Yes	Go to the next step.
11		No	Repair or replace the malfunctioning part according to the inspection results.
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. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .) If throttle body is normal or the problem remains: Replace the PCM (injector driver circuit malfunction). (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .)
12		No	Replace the thermostat. (See THERMOSTAT REMOVAL/INSTALLATION [L3 WITH TC] .)
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.

DIAGNOSTIC PROCEDURE

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.
1		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is a DTC displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
2		No	Go to the next step.
3	Access the ECT PID (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Verify that the ECT PID is less than 116°C {241°F} during driving. Is the ECT PID less than specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to the next step.
3		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 Control System 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.
4		No	Repair or replace the malfunctioning part according to the inspection results.
5	Perform the EGR Control System Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly?	Yes	Go to the next step.
5		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.
6		No	Inspect or replace the malfunctioning parts, according to the inspection results.
7	Perform the Purge Control System Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge solenoid valve work properly?	Yes	Go to the next step.
7		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.
8		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.
9		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) APP1 APP2 ECT MAF MAP PSP (PCM terminal 1AD) Do the PIDs indicate the correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to the next step.
10		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 TWC Is there any restriction?	Yes	Repair or replace the malfunctioning part according to the inspection results.
11		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.
12		No	Inspect or replace the malfunctioning parts, according to the inspection results.
13	Access and monitor the FUEL PRES PID (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 17.
13		No	Go to the next step.
14	Is the vehicle accelerate performance normally?	Yes	Go to the next step.
14	Is the vehicle accelerate performance normally?	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.
15		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
16	Replace the high pressure fuel pump (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to Step 21.
16		No	Replace the fuel delivery pipe. (Relief valve malfunction) (See FUEL INJECTOR REMOVAL/INSTALLATION [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 LINE PRESSURE INSPECTION [L3 WITH TC] .) Is the fuel pressure within the specification?	Yes	Go to the next step.
17		No	Inspect for the following: Fuel line restriction Fuel filter clogging If normal: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [L3 WITH TC] .)
18	Perform the Fuel Injector Operation Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Do fuel injectors operate normally?	Yes	Go to the next step.
18		No	Repair or replace the malfunctioning part according to the inspection results.
19	Measure the compression pressure for each cylinder (See COMPRESSION INSPECTION [L3 WITH TC] .) Are compression pressures within the specification?	Yes	Go to the next step.
19		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 PCV valve (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [L3 WITH TC] .) Is the PCV valve normal?	Yes	Replace the PCM (injector driver circuit malfunction). (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .) If the problem remains: Repair or replace the malfunctioning part according to the inspection results.
20		No	Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [L3 WITH TC] .)
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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Connect the M-MDS to the DLC-2 Access the ECT PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Start and warm-up engine to normal operating temperature. Is the ECT PID reading between 82-112°C {180-234°F}?	Yes	Go to the next step.
1		No	ECT PID is higher than 112°C {234°F}: Perform the symptom troubleshooting "NO.17 COOLING SYSTEM CONCERNS-OVERHEATING". (See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [L3 WITH TC] .) ECT PID is less than 82°C {180°F}: Perform the symptom troubleshooting "NO.18 COOLING SYSTEM CONCERNS-RUNS COLD". (See NO.18 COOLING SYSTEM CONCERNS-RUNS COLD [L3 WITH TC] .)
2	Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is a DTC displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
2		No	Go to the next step.
3	Inspect for leakage in intake-air system Is there any leakage found?	Yes	Repair or replace for leakage.
3		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.
4		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) AC_REQ APP1 APP2 ECT PSP (PCM terminal 1 AD) Do the PIDs indicate the correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to the next step.
5		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	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.
6		No	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .)
7	Perform the Fuel Injector Operation Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Do fuel injectors operate normally?	Yes	Go to the next step.
7		No	Repair or replace the malfunctioning part according to the inspection results.
8	Inspect the operation of cruise control system Does the cruise control system work properly?	Yes	Replace the PCM (injector driver circuit malfunction). (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .)
8		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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Does the engine idle rough?	Yes	Perform the symptom troubleshooting "NO.8 ENGINE RUNS ROUGH/ROLLING IDLE". (See NO.8 ENGINE RUNS ROUGH/ROLLING IDLE [L3 WITH TC] .)
1	Does the engine idle rough?	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.
2		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 to the inspection results.
3		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is a DTC displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
4		No	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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) AC_REQ APP1 APP2 BOO ECT MAF TP REL O2S11 O2S12 LONGFT1 SHTFT1 PSP (PCM terminal 1AD) Do the PIDs indicate the correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to the next step.
5		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 Control System Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly?	Yes	Go to the next step.
6		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.
7		No	Inspect or replace the malfunctioning parts, according to the inspection results.
8	Perform the Purge Control System Inspection (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge solenoid valve work properly?	Yes	Go to the next step.
8		No	Inspect or replace the malfunctioning parts, according to the inspection results.
9	Perform the A/C Cut-off Control System 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.
9		No	Repair or replace the malfunctioning part according to the inspection results.
10	Inspect adjustment of TR switch (See TRANSAXLE RANGE (TR) SWITCH INSPECTION [AW6A-EL, AW6AX-EL] .) Is the TR switch adjusted properly?	Yes	Go to the next step.
10		No	Perform the N position learning. (See NEUTRAL POSITION LEARNING [AW6A-EL, AW6AX-EL] .)
11	Access and monitor the FUEL PRES PID (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 15.
11		No	Go to the next step.
12	Is the vehicle acceleration performance normally?	Yes	Go to the next step.
12	Is the vehicle acceleration performance normally?	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.
13		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
14	Replace the high pressure fuel pump (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to Step 18.
14		No	Replace the fuel delivery pipe. (Relief valve malfunction) (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
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.
15		No	Inspect for the following: Fuel line restriction Fuel filter clogging If normal: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [L3 WITH TC] .)
16	Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Do fuel injectors operate normally?	Yes	Go to the next step.
16		No	Repair or replace the malfunctioning part according to the inspection results.
17	Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] .) Are compression pressures within the specification?	Yes	Replace the PCM (injector driver circuit malfunction). (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .) If the problem remains: Repair or replace the malfunctioning part according to the inspection results.
17		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.

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 Fuel leakage from fuel line Vacuum leakage Are all items normal?	Yes	Go to the next step.
1		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is a DTC displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
2		No	Go to the next step.
3	Access the ECT PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) 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.
3		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.
4		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.
5		No	Go to the next step.
6	Connect the M-MDS to the DLC-2. Access and monitor following PIDs using the data monitor function while wiggle the harness and under trouble condition. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) APP1 APP2 BAT ECT MAF IAT MAP FP VSS O2S11 O2S12 LONGFT1 SHTFT1 Do the PIDs indicate correct values? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 13.
6		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] .)
7	Perform the EGR Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does EGR system operate properly?	Yes	Go to the next step.
7		No	Inspect or replace the malfunctioning parts, according to the inspection results.
8	Perform the A/C Cut-off Control System 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.
8		No	Repair or replace the malfunctioning part according to the 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.
9		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.
10		No	Inspect or replace the malfunctioning parts, according to the inspection results.
11	Perform the Purge Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge control system work properly?	Yes	Go to the next step.
11		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.
12		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.
13		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 malfunction?	Yes	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
14		No	Go to the next step.
15	Inspect the turbocharger compressor wheel locknut is loose or has fallen down inside turbocharger. Is there any malfunction?	Yes	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
15		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.
16		No	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
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 malfunction?	Yes	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
17		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. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .) Small amount of oil is found: Wipe oil out of vehicle, then go to the next step.
18		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.
19		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 TWC. Is there any restriction?	Yes	Repair or replace the malfunctioning part according to the inspection results.
20		No	Go to the next step.
21	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.
21		No	Inspect or replace the malfunctioning parts, according to the inspection results.
22	Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 26.
22		No	Go to the next step.
23	Is the vehicle accelerate performance normally?	Yes	Go to the next step.
23	Is the vehicle accelerate performance normally?	No	Go to Step 25.
24	Inspect the fuel pressure sensor. (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] .) Is the fuel pressure sensor normal?	Yes	Go to Step 26.
24		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
25	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to Step 30.
25		No	Replace the fuel delivery pipe. (Relief valve malfunction) (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
26	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.
26		No	Inspect for the following: Fuel line restriction Fuel filter clogging If normal: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [L3 WITH TC] .)
27	Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Do fuel injectors operate normally?	Yes	Go to the next step.
27		No	Repair or replace the malfunctioning part according to the inspection results.
28	Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] .) Are compression pressures within the specification?	Yes	Go to the next step.
28		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.
29	Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [L3 WITH TC] .) Is the PCV valve normal?	Yes	Replace the PCM (injector driver circuit malfunction). (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .) If the problem remains: Repair or replace the malfunctioning part according to the inspection results.
29		No	Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [L3 WITH TC] .)
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.

DIAGNOSTIC PROCEDURE

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 Brake dragging Are all items normal?	Yes	Go to the next step.
1		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is a DTC displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
2		No	Go to the next step.
3	Is the engine overheating?	Yes	Perform the symptom troubleshooting "NO.17 COOLING SYSTEM CONCERNS-OVERHEATING". (See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [L3 WITH TC] .)
3	Is the engine overheating?	No	Go to the next step.
4	Perform the EGR Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly?	Yes	Go to the next step.
4		No	Inspect or replace the malfunctioning parts, according to the inspection results.
5	Perform the A/C Cut-off Control System 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.
5		No	Repair or replace the malfunctioning part 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.
6		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.
7		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.
8		No	Inspect or replace the malfunctioning parts, according to the inspection results.
9	Perform the Purge Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the purge control system work properly?	Yes	Go to the next step.
9		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.
10		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.
11		No	Inspect or replace the malfunctioning parts, according to the inspection results.
12	Connect the M-MDS to the DLC-2. Access and monitor following PIDs using the data monitor function. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) BAT ECT MAF IAT APP1 APP2 TP REL 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.
12		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.
13		No	Go to the next step.
14	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 the malfunctioning part according to the inspection results. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Spark plug is grayish white: Go to Step 24.
14		No	Install spark plugs on original cylinders, then Go to the next step.
15	Inspect for restriction in exhaust system and TWC. Is there any restriction?	Yes	Repair or replace the malfunctioning part according to the inspection results.
15		No	Go to the next step.
16	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 malfunction?	Yes	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
16		No	Go to the next step.
17	Inspect turbocharger compressor wheel locknut is loose or has fallen down inside turbocharger. Is there any malfunction?	Yes	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
17		No	Go to the next step.
18	Inspect turbocharger compressor wheel by hand. Does wheel turn easily and smoothly?	Yes	Go to the next step.
18		No	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
19	Inspect turbocharger turbine wheel is damaged, cracked or interfering with housing on vehicle. NOTE: Inspect all fins on each turbine wheel. Is there any malfunction?	Yes	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
19		No	Go to the next step.
20	Is any engine oil found inside turbocharger turbine housing?	Yes	Excessive amount of oil is found: Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .) Small amount of oil is found: Wipe oil out of vehicle, then go to the next step.
20		No	Go to the next step.
21	Is any engine oil found inside turbocharger compressor housing?	Yes	Wipe oil out vehicle and install all removed parts in Step 16, then go to the next step.
21		No	Turbocharger is normal: Install all parts removed in Step 16, then go to the next step.
22	Inspect for leakage in fuel line. Is there any fuel leakage found?	Yes	Repair or replace the malfunctioning part according to the inspection results.
22		No	Go to the next step.
23	Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 27.
23		No	Go to the next step.
24	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to Step 29.
24		No	Replace the fuel delivery pipe. (Fuel pressure sensor or relief valve malfunction) (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
25	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.
25		No	Inspect for the following: Fuel line restriction Fuel filter clogging If normal: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [L3 WITH TC] .)
26	Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Do fuel injectors operate normally?	Yes	Go to the next step.
26		No	Repair or replace the malfunctioning part according to the inspection results.
27	Measure compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] .) Are compression pressures within the specification?	Yes	Go to the next step.
27		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.
28	Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [L3 WITH TC] .) Is the PCV valve normal?	Yes	Replace the PCM (injector driver circuit malfunction). (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .) If the problem remains: Repair or replace the malfunctioning part according to the inspection results.
28		No	Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [L3 WITH TC] .)
29	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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Connect the M-MDS to the DLC-2. Access the ECT PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) 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.
1		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 TWC restriction Charge air cooler condition (restriction or damaged) Are all items normal?	Yes	Go to the next step.
2		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is a DTC displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
3		No	Go to the next step.
4	Inspect the KS. (See KNOCK SENSOR (KS) INSPECTION [L3 WITH TC] .) Is the KS normal?	Yes	Go to the next step.
4		No	Replace the KS. (See KNOCK SENSOR (KS) REMOVAL/INSTALLATION [L3 WITH TC] .)
5	Perform the EGR Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly?	Yes	Go to the next step.
5		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.
6		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.
7		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.
8		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.
9		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.
10		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) BAT ECT MAF IAT APP1 APP2 TP REL MAP Do the PIDs indicate correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to the next step.
11		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 16.
12		No	Go to the next step.
13	Is the vehicle accelerate performance normally?	Yes	Go to the next step.
13	Is the vehicle accelerate performance normally?	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.
14		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
15	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to Step 17.
15		No	Replace the fuel delivery pipe. (Relief valve malfunction) (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
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] .)
16		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 if 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.

DIAGNOSTIC PROCEDURE

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 TWC restriction Are all items normal?	Yes	Go to the next step.
1		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is a DTC displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
2		No	Go to the next step.
3	Perform the Cooling Fan Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the cooling fan system work properly?	Yes	Go to the next step.
3		No	Inspect or replace the malfunctioning parts, according to the inspection results.
4	Perform the EGR Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly?	Yes	Go to the next step.
4		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.
5		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.
6		No	Inspect or replace the malfunctioning parts, according to the inspection results.
7	Perform the A/C Cut-off Control System 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.
7		No	Repair or replace the malfunctioning part according to the inspection results.
8	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.
8		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.
9		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) BAT ECT MAF IAT APP1 APP2 TP REL 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.
10		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	Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 15.
11		No	Go to the next step.
12	Is the vehicle accelerate performance normally?	Yes	Go to the next step.
12	Is the vehicle accelerate performance normally?	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.
13		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
14	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to Step 19.
14		No	Replace the fuel delivery pipe. (Relief valve malfunction) (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
15	Inspect the turbocharger. (See TURBOCHARGER INSPECTION [L3 WITH TC] .) Is there any malfunction?	Yes	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
15		No	Go to the next step.
16	Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Do fuel injectors operate normally?	Yes	Go to the next step.
16		No	Repair or replace the malfunctioning part according to the inspection results.
17	Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] .) Are compression pressures within the specification?	Yes	Go to the next step.
17		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	Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [L3 WITH TC] .) Is the PCV valve normal?	Yes	Replace the PCM (injector driver circuit malfunction). (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .) If the problem remains: Repair or replace the malfunctioning part according to the inspection results.
18		No	Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [L3 WITH TC] .)
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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Is the engine overheating?	Yes	Perform the symptom troubleshooting "NO.17 COOLING SYSTEM CONCERNS-OVERHEATING". (See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [L3 WITH TC] .)
1	Is the engine overheating?	No	Go to the next step.
2	Is the engine runs cold?	Yes	Perform the symptom troubleshooting "NO.18 COOLING SYSTEM CONCERNS-RUNS COLD". (See NO.18 COOLING SYSTEM CONCERNS-RUNS COLD [L3 WITH TC] .)
2	Is the engine runs cold?	No	Go to the next step.
3	Connect the M-MDS to the DLC-2. Perform the self-test function using the M-MDS. Turn the ignition switch to the ON position. Retrieve any DTCs. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is a DTC displayed?	Yes	Go to the appropriate DTC inspection. (See DTC TABLE [L3 WITH TC] .)
3		No	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 TWC restriction Are all items normal?	Yes	Go to the next step.
4		No	Service if necessary. Repeat Step 4.
5	Perform the EGR Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the EGR system operate properly?	Yes	Go to the next step.
5		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.
6		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.
7		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.
8		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] .) Is the Evaporative Emission (EVAP) system normal?	Yes	Go to the next step.
9		No	Inspect or replace the malfunctioning parts, according to the inspection results.
10	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.
10		No	Inspect or replace the malfunctioning parts, according to the inspection results.
11	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.
11		No	Go to the next step.
12	Connect the M-MDS to the DLC-2. Access and monitor the following PIDs using the data monitor function. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) BAT ECT MAF IAT APP1 APP2 TP REL 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.
12		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] .)
13	Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 17.
13		No	Go to the next step.
14	Is the vehicle accelerate performance normally?	Yes	Go to the next step.
14	Is the vehicle accelerate performance normally?	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.
15		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
16	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to Step 22.
16		No	Replace the fuel delivery pipe. (Relief valve malfunction) (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
17	Inspect the turbocharger. (See TURBOCHARGER INSPECTION [L3 WITH TC] .) Is there any malfunction?	Yes	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
17		No	Go to the next step.
18	Inspect the TWC. Is the TWC normal?	Yes	Go to the next step.
18	Inspect the TWC. Is the TWC normal?	No	Replace the TWC. (See EXHAUST SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
19	Perform the Fuel Injector Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Do fuel injectors operate normally?	Yes	Go to the next step.
19		No	Repair or replace the malfunctioning part according to the inspection results.
20	Measure the compression pressure for each cylinder. (See COMPRESSION INSPECTION [L3 WITH TC] .) Are compression pressures within the specification?	Yes	Go to the next step.
20		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	Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [L3 WITH TC] .) Is the PCV valve normal?	Yes	Replace the PCM (injector driver circuit malfunction). (See PCM REMOVAL/INSTALLATION [L3 WITH TC] .) If the problem remains: Repair or replace the malfunctioning part according to the inspection results.
21		No	Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [L3 WITH TC] .)
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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Verify the following: Proper dipstick Proper engine oil viscosity Engine oil level Are all items normal?	Yes	Go to the next step.
1		No	Service if necessary. Repeat Step 1.
2	Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [L3 WITH TC] .) Is the PCV valve normal?	Yes	Go to the next step.
2		No	Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [L3 WITH TC] .)
3	Inspect the oil leakage from outside of the engine. Is there any oil leakage found?	Yes	Repair or replace oil leakage part.
3		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. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .) Small amount of oil is found: Wipe oil out of vehicle, then go to the next step.
4		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 the oil pipe. Install the removed parts at Step 4.
5		No	Inspect internal engine parts such as valves, valve guides, valve stem seals, cylinder head drain passage, and piston rings. 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.

DIAGNOSTIC PROCEDURE

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.
1		No	Service if necessary. Repeat Step 1.
2	Connect the M-MDS to the DLC-2. Turn the ignition switch to the ON position (engine off). Retrieve any DTCs. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is there any DTCs displayed?	Yes	Go to the appropriate DTC inspection. (See DTC TABLE [L3 WITH TC] .)
2		No	Go to the next step.
3	Perform the KOEO/KOER self test function using the M-MDS. (See KOEO/KOER SELF TEST [L3 WITH TC] .) Is there any DTCs displayed?	Yes	Go to the appropriate DTC inspection. (See DTC TABLE [L3 WITH TC] .)
3		No	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 disengaged?	Yes	Go to the next step.
4		No	Perform the symptom troubleshooting "NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY". (See NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [L3 WITH TC] .)
5	Perform the Cooling Fan Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Does the cooling fan system operate properly?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning part according to the inspection results.
6	Is the drive belt normal?	Yes	Go to the next step.
6	Is the drive belt normal?	No	Replace the drive belt. (See DRIVE BELT REMOVAL/INSTALLATION [L3 WITH TC] .)
7	Is there any leakage around heater unit in passenger compartment?	Yes	Inspect and service heater unit for leakage.
7		No	Go to the next step.
8	Is there any leakage at coolant hoses and/or radiator?	Yes	Replace the malfunctioning part.
8	Is there any leakage at coolant hoses and/or radiator?	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 the thermostat normal?	Yes	Inspect the cylinder block for leakage or blockage. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
9		No	Access the ECT PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Inspect for both ECT PID and temperature gauge readings. If the temperature gauge on instrument cluster indicates normal but the ECT PID is not same as temperature gauge reading: Inspect the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3 WITH TC] .) Replace the ECT sensor, if necessary. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] .) If the temperature gauge on instrument cluster indicates overheating but the ECT PID is normal: Inspect the instrument cluster. (See INSTRUMENT CLUSTER INSPECTION .) Replace the instrument cluster, if necessary. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Is customer complaint "Lack of passenger compartment heat" only?	Yes	Inspect the A/C heater system. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
1		No	Go to the next step.
2	Does the engine speed continue at fast idle?	Yes	Perform the symptom troubleshooting "NO.9 FAST IDLE/RUNS ON". (See NO.9 FAST IDLE/RUNS ON [L3 WITH TC] .)
2	Does the engine speed continue at fast idle?	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 the thermostat normal?	Yes	Go to the next step.
3		No	Replace the thermostat. (See THERMOSTAT REMOVAL/INSTALLATION [L3 WITH TC] .)
4	Perform the Cooling Fan Control System 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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Inspect for both ECT PID and temperature gauge readings. If the temperature gauge on instrument cluster indicates normal but the ECT PID is not same as temperature gauge reading: Inspect the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3 WITH TC] .) Replace the ECT sensor, if necessary. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [L3 WITH TC] .) If the temperature gauge on instrument cluster indicates overheating but the ECT PID is normal: Inspect the instrument cluster. (See INSTRUMENT CLUSTER INSPECTION .) Replace the instrument cluster, if necessary. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
4		No	Repair or replace the malfunctioning part according to the 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.

DIAGNOSTIC PROCEDURE

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 Step 5.
		Black	Rich fuel mixture is indicating. Go to Step 6.
2	Inspect the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [L3 WITH TC] .) Is the PCV valve normal?	Yes	Go to the next step.
2		No	Replace the PCV valve. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [L3 WITH TC] .)
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. Excessive amount of oil is found: Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .) Small amount of oil is found: Wipe oil out of vehicle, then go to the next step.
3		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 Is there any problem found?	Yes	Repair or replace suspected parts, according to the inspection results.
4		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.
5		No	Inspect for the cause. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
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.
6		No	Repair or replace the malfunctioning part according to the inspection results.
7	Connect the M-MDS to the DLC-2. Access the following PIDs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) BAT ECT MAF IAT APP1 APP2 TP REL 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? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to the next step.
7		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] .) If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
8		No	Go to the next step.
9	Connect the M-MDS to the DLC-2. Access and monitor same PIDs as in Step 7 under trouble condition. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Do the PIDs indicate correct values under trouble condition? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to the next step.
9		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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 14.
10		No	Go to the next step.
11	Is vehicle accelerate performance normally?	Yes	Go to the next step.
11	Is vehicle accelerate performance normally?	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.
12		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
13	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to Step 16.
13		No	Replace the fuel delivery pipe. (Relief valve malfunction) (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
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.
14		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] .) Replace the suspected fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
15		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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Visually inspect fuel leakage at fuel line. Is there any fuel leakage?	Yes	Service if necessary.
1		No	Go to the next step.
2	Inspect the vacuum hose routine. (See INTAKE-AIR SYSTEM VACUUM HOSE ROUTING DIAGRAM [L3 WITH TC] .) Are vacuum hoses routines properly?	Yes	Go to the next step.
2		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.
3		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.
4		No	Replace the purge solenoid valve. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [L3 WITH TC] .)
5	Connect the M-MDS to the DLC-2. Access the FUEL PRES PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Monitor the FUEL_PRES PID while idle and race the engine. Is the FUEL_PRES PID indicate 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. (See CHARCOAL CANISTER REMOVAL/INSTALLATION [L3 WITH TC] .)
5		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] .) If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results. (See FUEL PRESSURE SENSOR REMOVAL/INSTALLATION [L3 WITH TC] .) (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .)
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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Is the noise from the turbocharger?	Yes	Go to Step 8.
1	Is the noise from the turbocharger?	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. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
2	Is squeal, click or chirp sound present?	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 .)
3	Is rumble or grinding sound present?	No	Go to the next step.
4	Is rattle sound present?	Yes	Inspect the location of rattle for loose parts. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
4	Is rattle sound present?	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 If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
5	Is hiss sound present?	No	Go to the next step.
6	Is rap or roar sound present?	Yes	Inspect the exhaust system or loose parts. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
6	Is rap or roar sound present?	No	Go to the next step.
7	Is knocking noise present?	Yes	Perform the symptom troubleshooting "NO.13 KNOCKING/PINGING". (See NO.13 KNOCKING/PINGING [L3 WITH TC] .)
7	Is knocking noise present?	No	If noise comes from engine internal: Inspect for the friction gear, timing chain or MLA noise. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
8	Inspect the intake and exhaust housing system for loose installation. Is there any problem found?	Yes	Repair installation or replace suspected part.
8		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 malfunction?	Yes	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
9		No	Go to the next step.
10	Inspect the turbocharger compressor wheel locknut is loose or has fallen down inside turbocharger. Is there any malfunction?	Yes	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
10		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.
11		No	Replace the turbocharger. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
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. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC] .)
12		No	Install the removal parts at Step 9, and inspect all turbocharger related parts installed correctly. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
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.

DIAGNOSTIC PROCEDURE

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.
1		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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Connect the M-MDS to the DLC-2. Turn the ignition switch to the ON position (engine off). Retrieve PCM, BCM and climate control unit DTCs. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) (See DTC INSPECTION [BCM] .) (See DTC DISPLAY .) Are there any DTCs displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .) (See DTC TABLE [BCM] .) (See DTC TABLE .)
1		No	Go to the next step.
2	Access the PCM PID ACCS using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Start the engine and idle it. Turn the ACCS PID to ON from OFF using the M-MDS simulation function. Is the A/C magnetic clutch engaged?	Yes	Full-auto air conditioner: Go to Step 6. Manual air conditioner: Go to the next step.
2		No	Go to Step 15.
3	Access the BCM PID ACSW using the M-MDS. (See PID/DATA MONITOR INSPECTION [BCM] .) Monitor the ACSW PID while turning on and off the air conditioner by switching the control panel. Is the PID normal? (See PID/DATA MONITOR TABLE [BCM] .)	Yes	Go to Step 6.
3		No	Go to the next step.
4	Remove the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL [MANUAL AIR CONDITIONER] .) Reconnect the climate control unit connector. Start the engine and idle it. Measure the climate control unit terminal J (24-pin) voltage while turning on and off the air conditioner by control panel. Is the voltage change in specified according to control panel switching? (See CLIMATE CONTROL UNIT REMOVAL [MANUAL AIR CONDITIONER] .)	Yes	Go to the next step.
4		No	Go to Step 6.
5	Inspect for open or short circuit between climate control unit terminal J (24-pin) and BCM terminal 3L. Is there any open or short circuit detected?	Yes	Repair or replace the suspected wiring harness.
5		No	Replace the BCM (BCM can not receive the A/C request signal from climate control unit or transmit it to PCM). (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION .)
6	Start the engine and idle it. Measure the voltage between the following terminals: Full-auto air conditioner: Climate control unit terminal 1F Manual air conditioner: Climate control unit terminal I Is the voltage normal? (See CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER] .) (See CLIMATE CONTROL UNIT INSTALLATION [MANUAL AIR CONDITIONER] .)	Yes	Go to Step 9.
6		No	Go to the next step.
7	Turn the ignition switch to the ON position (engine off). Measure the voltage between the following terminals: Full-auto air conditioner: Climate control unit terminal 1C Manual air conditioner: Climate control unit terminal K Is the voltage normal? (See CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER] .) (See CLIMATE CONTROL UNIT INSTALLATION [MANUAL AIR CONDITIONER] .)	Yes	Go to the next step.
7		No	Replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER] .) (See CLIMATE CONTROL UNIT REMOVAL [MANUAL AIR CONDITIONER] .) (See CLIMATE CONTROL UNIT INSTALLATION [MANUAL AIR CONDITIONER] .)
8	Inspect for open or short circuit between following climate control unit terminal (24-pin) and evaporator temperature sensor terminal: Full-auto air conditioner: Between climate control unit terminal 1C and evaporator temperature sensor terminal A Between climate control unit terminal 1F and evaporator temperature sensor terminal B Manual air conditioner: Between climate control unit terminal K and evaporator temperature sensor terminal A Between climate control unit terminal I and evaporator temperature sensor terminal B Is there any open or short circuit detected?	Yes	Repair or replace the suspected wiring harness.
8		No	Replace the evaporator temperature sensor. (See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER] .) (See EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER] .)
9	Inspect the refrigerant pressure sensor. (See REFRIGERANT PRESSURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER] .) (See REFRIGERANT PRESSURE SENSOR INSPECTION [MANUAL AIR CONDITIONER] .) Is the refrigerant pressure sensor normal?	Yes	Full-auto air conditioner: Go to Step 13. Manual air conditioner: Replace the climate control unit (A/C switch malfunction or climate control unit can not determine A/C request or transmit it to BCM). (See CLIMATE CONTROL UNIT REMOVAL [MANUAL AIR CONDITIONER] .) (See CLIMATE CONTROL UNIT INSTALLATION [MANUAL AIR CONDITIONER] .)
9		No	Go to the next step.
10	Inspect the refrigerant pressure. (See REFRIGERANT PRESSURE CHECK .) Is the refrigerant pressure normal?	Yes	Go to the next step.
10		No	Repair or replace the malfunctioning part according to the inspection results.
11	Turn the ignition switch to the ON position (engine off). Measure the voltage between the following terminals: Full-auto air conditioner: Climate control unit terminal 1N Manual air conditioner: Climate control unit terminal N Is the voltage normal? (See CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER] .) (See CLIMATE CONTROL UNIT INSTALLATION [MANUAL AIR CONDITIONER] .)	Yes	Go to the next step.
11		No	Replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER] .) (See CLIMATE CONTROL UNIT REMOVAL [MANUAL AIR CONDITIONER] .) (See CLIMATE CONTROL UNIT INSTALLATION [MANUAL AIR CONDITIONER] .)
12	Inspect for open or short circuit between following climate control unit terminal (24-pin) and refrigerant pressure sensor terminal: Full-auto air conditioner: Between climate control unit terminal 1J and refrigerant pressure sensor terminal A Between climate control unit terminal 1N and refrigerant pressure sensor terminal B Between climate control unit terminal 1C and refrigerant pressure sensor terminal C Manual air conditioner: Between climate control unit terminal E and refrigerant pressure sensor terminal A Between climate control unit terminal N and refrigerant pressure sensor terminal B Between climate control unit terminal K and refrigerant pressure sensor terminal C Is there any open or short circuit detected?	Yes	Repair or replace the suspected wiring harness.
12		No	Replace the refrigerant pressure sensor. (See REFRIGERANT PRESSURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER] .) (See REFRIGERANT PRESSURE SENSOR REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER] .)
13	Verify the multi information display indication of A/C system while turning on and off the air conditioner by switching the control penal. Does the multi information display indicate properly?	Yes	Replace the BCM (BCM can not receive the A/C request signal from climate control unit or transmit it to PCM). (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION .)
13		No	Go to the next step.
14	Inspect the multi information display. (See MULTI INFORMATION DISPLAY INPUT/OUTPUT CHECK MODE .) Is the multi information display normal?	Yes	Replace the climate control unit (A/C switch malfunction or climate control unit can not determine A/C request or transmit it to BCM). (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER] .)
14		No	Repair or replace the malfunctioning part according to the inspection results.
15	Start the engine and idle it. Verify that the A/C relay operation sound is heard while PCM PID ACCS to ON from OFF using the M-MDS simulation function. Is the A/C operation sound heard?	Yes	Go to the next step.
15		No	Go to Step 17.
16	Inspect the A/C compressor magnetic clutch. (See MAGNETIC CLUTCH INSPECTION [FULL-AUTO AIR CONDITIONER] .) (See MAGNETIC CLUTCH INSPECTION [MANUAL AIR CONDITIONER] .) Is the magnetic clutch normal?	Yes	Inspect and repair for open or short circuit between battery positive terminal and A/C compressor terminal A.
16		No	Replace the magnetic clutch. (See MAGNETIC CLUTCH DISASSEMBLY/ASSEMBLY [FULL-AUTO AIR CONDITIONER] .) (See MAGNETIC CLUTCH DISASSEMBLY/ASSEMBLY [MANUAL AIR CONDITIONER] .)
17	Inspect the A/C relay. (See RELAY INSPECTION [L3 WITH TC] .) Is the A/C relay normal?	Yes	Go to the next step.
17		No	Replace the A/C relay.
18	Remove the A/C relay. Start the engine and idle it. Measure the A/C relay terminal (fuse box side connector) while PCM PID ACCS to ON from OFF using the M-MDS simulation function. Is the voltage below 1.0 V ?	Yes	Inspect and repair for open circuit between ignition switch terminal B and A/C relay terminal 1.
18		No	Inspect and repair for open or short to power supply circuit between PCM terminal 1I and A/C relay terminal 2.
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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Connect the M-MDS to the DLC-2. Turn the ignition switch to the ON position (engine off). Retrieve PCM, BCM and climate control unit DTCs. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) (See DTC INSPECTION [BCM] .) (See DTC DISPLAY .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .) (See DTC TABLE [BCM] .) (See DTC TABLE .)
1		No	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	Go to Step 5.
2		No	Go to the next step.
3	Turn the ignition switch off. Disconnect the A/C compressor connector. Start the engine and idle it. Does the A/C magnetic clutch disengage?	Yes	Inspect and repair for short to power supply between A/C relay terminal C and A/C compressor connector.
3		No	Go to the next step.
4	Verify that the A/C magnetic clutch clearance. (See MAGNETIC CLUTCH ADJUSTMENT [FULL-AUTO AIR CONDITIONER] .) (See MAGNETIC CLUTCH ADJUSTMENT [MANUAL AIR CONDITIONER] .) Is the magnetic clutch clearance normal?	Yes	Inspect and repair A/C magnetic clutch for stuck. (See MAGNETIC CLUTCH INSPECTION [FULL-AUTO AIR CONDITIONER] .) (See MAGNETIC CLUTCH INSPECTION [MANUAL AIR CONDITIONER] .) (See MAGNETIC CLUTCH DISASSEMBLY/ASSEMBLY [FULL-AUTO AIR CONDITIONER] .) (See MAGNETIC CLUTCH DISASSEMBLY/ASSEMBLY [MANUAL AIR CONDITIONER] .)
4		No	Adjust the magnetic clutch clearance.
5	Access the PCM PID AC_REQ using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Monitor the AC_REQ PID while turning on and off the air conditioner by switching the control penal. Is the AC_REQ PID always ON?	Yes	Full-auto air conditioner: Replace the climate control unit (A/C request signal always ON). (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER] .) Manual air conditioner: Go to the next step.
5		No	Go to Step 7.
6	Turn the ignition switch off. Disconnect the climate control unit connector. Verify continuity between climate control unit connector terminal J (24-pin) and body ground. Is there continuity?	Yes	Repair for short to ground circuit. If the short to ground could not be detected: Replace the BCM. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION .)
6		No	Replace the climate control unit (A/C request signal always ON). (See CLIMATE CONTROL UNIT REMOVAL [MANUAL AIR CONDITIONER] .) (See CLIMATE CONTROL UNIT INSTALLATION [MANUAL AIR CONDITIONER] .)
7	Inspect the A/C relay. (See RELAY INSPECTION [L3 WITH TC] .) Is the A/C relay normal?	Yes	Inspect and repair for short to ground circuit between A/C relay terminal E and PCM terminal 1I.
7		No	Replace the A/C relay.
8	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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Does the A/C compressor disengage when A/C switch is turned off?	Yes	Go to the next step.
1		No	Perform the symptom troubleshooting "NO. 24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY". (See NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [L3 WITH TC] .)
2	Connect the M-MDS to the DLC-2. Turn the ignition switch to the ON position (engine off). Retrieve any PCM DTCs. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Are any DTCs present?	Yes	Go to the appropriate DTC inspection. (See DTC TABLE [L3 WITH TC] .)
2		No	Inspect the APP sensor. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [L3 WITH TC] .) If there is any malfunction: Replace the accelerator pedal. (See ACCELERATOR PEDAL REMOVAL/INSTALLATION [L3 WITH TC] .)
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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Are any driveability or exhaust smoke concerns present?	Yes	Go to the appropriate flow chart.
1	Are any driveability or exhaust smoke concerns present?	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.
2		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 PCM DTCs. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Are there any DTCs displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
3		No	Go to the next step.
4	Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to Step 8.
4		No	Go to the next step.
5	Is vehicle accelerate performance normally?	Yes	Go to the next step.
5	Is vehicle accelerate performance normally?	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.
6		No	Go to the next step.
7	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. Go to Step 9.
7		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. (See CHARCOAL CANISTER REMOVAL/INSTALLATION [L3 WITH TC] .)
8		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 part according to the 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.

DIAGNOSTIC PROCEDURE

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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Are there any DTCs displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
1		No	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 If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
2		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.

DIAGNOSTIC PROCEDURE

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. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Are there any DTCs displayed?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
1		No	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. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
2		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.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION	RESULTS	ACTION
1	Remove all the spark plugs. (See SPARK PLUG REMOVAL/INSTALLATION [L3 WITH TC] .) Inspect the spark plug condition. Is the spark plug condition normal?	Yes	Troubleshooting completed.
1		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. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
2	Is the spark plug wet/covered with carbon from engine 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.
3		No	Replace the spark plug. (See SPARK PLUG REMOVAL/INSTALLATION [L3 WITH TC] .)
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.
4		No	Repair or replace the malfunctioning part according to the inspection results.
5	Install all the spark plugs. (See SPARK PLUG REMOVAL/INSTALLATION [L3 WITH TC] .) Perform the spark test at the suspected malfunctioning cylinder. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 WITH TC] .) Is a strong blue spark visible (compare with normal cylinder)?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning part according to the inspection results.
6	Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) 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: (See FUEL INJECTOR INSPECTION [L3 WITH TC] .) Open or short circuit in the fuel injector
6		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.
7		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
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 fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .) Retest Step 6. If the FUEL_PRES PID indication is other that the specification: Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .)
8		No	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .)
9	Inspect the spark plug for the following. Heat range Air gap Is the spark plug normal?	Yes	Go to the next step.
9		No	Replace the spark plug. (See SPARK PLUG REMOVAL/INSTALLATION [L3 WITH TC] .)
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 (P0201:00, P0202:00, P0203:00 or P0204:00) present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 WITH TC] .)
10		No	Inspect the suspect cylinder fuel injector for the following: (See FUEL INJECTOR INSPECTION [L3 WITH TC] .) Resistance
11	Is the air cleaner element free of blockage?	Yes	Go to the next step.
11	Is the air cleaner element free of blockage?	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.
12		No	Repair or replace the malfunctioning part according to the inspection results.
13	Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specification? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to step 16.
13		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.
14		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
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 fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .) Retest Step 13. If the FUEL_PRES PID indication is other that the specification: Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .)
15		No	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .)
16	Inspect the following PIDs: ECT O2S11 (When engine can be started) MAF Are the PIDs normal? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Go to the next step.
16		No	Repair or replace the malfunctioning part according to the inspection results.
17	Perform the Purge Control System 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.
17		No	Repair or replace the malfunctioning part according to the inspection results.
18	Inspect the engine compression. (See COMPRESSION INSPECTION [L3 WITH TC] .) Is the compression correct?	Yes	Inspect for clogging in the exhaust system. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
18		No	Repair or replace the malfunctioning part according to the inspection results.
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 according to the inspection results.
19		No	Go to the next step.
20	Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) 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. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
20		No	Go to the next step.
21	Is vehicle accelerate performance normally?	Yes	Go to the next step.
21	Is vehicle accelerate performance normally?	No	Go to Step 23.
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.
22		No	Replace the fuel delivery pipe. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3 WITH TC] .)
23	Replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 WITH TC] .) Access and monitor the FUEL PRES PID. (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] .) Is the FUEL_PRES PID value within the specified? (See PCM INSPECTION [L3 WITH TC] .)	Yes	Troubleshooting is completed. (High-pressure fuel pump or spill valve control solenoid valve (built-in high pressure fuel pump) malfunction) Go to the next step.
23		No	Inspect for the following PIDs. ECT O2S11 O2S12 MAF (See PCM INSPECTION [L3 WITH TC] .) Inspect the PCM ground condition. If there is any malfunction: Repair or replace the malfunctioning part according to the inspection results.
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.

DIAGNOSTIC PROCEDURE

Inspection Method for Switch Connectors or Wires

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 idle.
Access the PIDs for the switch you are inspecting.
Turn the switch on manually.
Slightly shake each connector or wiring harness vertically and horizontally while monitoring the PID.

If the PID value is unstable, check for a poor connection.

Scheme 13

Scheme 14

Scheme 14: Inspection Method for Sensor Connectors or Wires

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 idling.
Access the PIDs for the switch you are inspecting.
Slightly shake each connector or wiring harness vertically and horizontally while monitoring the PID. If the PID value is unstable, check for poor connection.

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 15

Scheme 15: Inspection Method for Actuators or Relays

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.

Intake Manifold Vacuum Inspection

Verify air intake hoses are installed properly.
Start the engine and run it is 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-375328-S11537390352010102800000) .)

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-375326-S27849303482010102800000) .) Electronic throttle body and related wiring harness (See «THROTTLE ACTUATOR INSPECTION [L3 WITH TC]»(ref-375331-S22166471482010102800000) .)

Load compensation inspection

Start the engine and run it is idling.
Connect the M-MDS to the DLC-2.
Verify that DTC P0506:00 or P0507:00 is not displayed. If DTC P0506:00, or P0507:00 is displayed, perform the DTC inspection. (See «DTC P0506:00 [L3 WITH TC]»(ref-375324-S21355070232010102800000) .) (See «DTC P0507:00 [L3 WITH TC]»(ref-375324-S33947796882010102800000) .)
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 system (A/C request signal is always on or off) (See «NO.23 A/C DOES NOT WORK SUFFICIENTLY [L3 WITH TC]»(ref-375325-S07673542172010102800000) .) (See «NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [L3 WITH TC]»(ref-375325-S39663043092010102800000) .) Electrical load Charging system (See «GENERATOR INSPECTION [L3 WITH TC]»(ref-375338-S13777161852010102800000) .) (See «BATTERY INSPECTION [L3 WITH TC]»(ref-375338-S28842394502010102800000) .) PSP switch and related wiring harness (See «POWER STEERING PRESSURE (PSP) SWITCH INSPECTION [L3 WITH TC]»(ref-375326-S19721448362010102800000) .)

Engine speed

Load condition	Engine speed (rpm)
Load condition	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 sensor (middle pressure switch) is off. (3) Refrigerant pressure sensor (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 sensor (middle pressure switch) is off.

(3)	Refrigerant pressure sensor (middle pressure switch) is on.

ENGINE SPEED REFERENCE CHART

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-375324-S41959017002010102800000) .)
Verify that none of the following DTCs are displayed: P0122:00, P0123:00, P0222:00, P0223:00, P2100:00, P2101:00, P2102:00, P2103:00, P2107:00, P2108:00, P2119:00, P2122:00, P2123:00, P2127:00, P2128:00, P2135:00, P2138:00 If any one DTC is displayed, perform the DTC inspection. (See «DTC TABLE [L3 WITH TC]»(ref-375324-S26001231552010102800000) .)
Access the TP REL PID.
Verify that the PID reading is within the CTP value. (See «PCM INSPECTION [L3 WITH TC]»(ref-375326-S38769914902010102800000) .) 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 TP 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: TP sensor
Fully depress the throttle pedal and verify that the PID reading is within the WOT value. (See «PCM INSPECTION [L3 WITH TC]»(ref-375326-S38769914902010102800000) .) 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 TP 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-375326-S27849303482010102800000) .)

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-375326-S38769914902010102800000) .) If not as specified, inspect the following. ECT sensor and related wiring harness (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3 WITH TC]»(ref-375326-S27849303482010102800000) .)

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 (Ignition switch-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 (Ignition switch-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.
Connect the M-MDS to the DLC-2.
Remove the fuel-filler cap.
Start the engine and run it is idling.
Turn the fuel pump speed control relay from off to on using the FPRR PID and verify that the fuel pump unit operation sound frequency at FPRR PID on is higher than off. If it cannot verified, inspect for the following: Fuel pump resister Fuel pump relay (stuck on or off) Wiring harnesses and connectors (open or short to ground circuit at fuel pump relay terminal C-fuel pump terminal B)

If simulation function of M-MDS is not used

Perform the fuel pump operation inspection.
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 (stuck on or off) Wiring harnesses and connectors (open or short to ground circuit at fuel pump relay terminal C-fuel pump unit 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. DIAGNOSTIC PROCEDURE STEP INSPECTION ACTION 1 Disconnect the ignition coil from the spark plugs. Remove the spark plugs. (See «SPARK PLUG REMOVAL/INSTALLATION [L3 WITH TC]»(ref-375334-S21219914762010102800000) .) 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 the spark plugs, then go to the next step. (See «SPARK PLUG REMOVAL/INSTALLATION [L3 WITH TC]»(ref-375334-S21219914762010102800000) .) 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]»(ref-375334-S03855760932010102800000) .) (See «IGNITION COIL REMOVAL/INSTALLATION [L3 WITH TC]»(ref-375334-S03252830932010102800000) .) No Repair or replace the suspected wiring harness, 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 according to the inspection results, 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 P0403:00 is shown. Perform the DTC inspection. (See «DTC P0403:00 [L3 WITH TC]»(ref-375324-S23602617792010102800000) .)
Start the engine run it is idling.
Increase the step value of the EGR valve from 0 to 57 using the SEGRP 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. (See «EGR VALVE REMOVAL/INSTALLATION [L3 WITH TC]»(ref-375333-S24806203622010102800000) .) 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 the 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 REL and ECT PIDs. (See «PCM INSPECTION [L3 WITH TC]»(ref-375326-S38769914902010102800000) .)
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 P0403:00 is shown. Perform the DTC inspection. (See «DTC P0403:00 [L3 WITH TC]»(ref-375324-S23602617792010102800000) .)
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-375326-S38769914902010102800000) .)
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 P0443:00 is displayed. Perform the DTC inspection. (See «DTC P0443:00 [L3 WITH TC]»(ref-375324-S30067828102010102800000) .)
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-375333-S10581296362010102800000) .)
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 (See «PURGE SOLENOID VALVE INSPECTION [L3 WITH TC]»(ref-375333-S10581296362010102800000) .)
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 P0443:00 is shown. Perform DTC inspection. (See «DTC P0443:00 [L3 WITH TC]»(ref-375324-S30067828102010102800000) .)
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 (See «PURGE SOLENOID VALVE INSPECTION [L3 WITH TC]»(ref-375333-S10581296362010102800000) .) 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". (See «NO.23 A/C DOES NOT WORK SUFFICIENTLY [L3 WITH TC]»(ref-375325-S07673542172010102800000) .)
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 1I) 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-375324-S41959017002010102800000) .)
Verify that the DTC P0480:00 or P0481:00 is not shown and the cooling fan operates during the KOER self test. If DTC P0480:00 or P0481:00 is shown, perform the DTC troubleshooting procedure. (See «DTC P0480:00 [L3 WITH TC]»(ref-375324-S05915525942010102800000) .) (See «DTC P0481:00 [L3 WITH TC]»(ref-375324-S06445011022010102800000) .) 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 for followings: Cooling fan relay (stuck open) Open circuit in wiring harness between main relay and cooling fan relay Open circuit in wiring harness between PCM terminal 1AO and cooling fan relay If there is a clicking sound, 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. Use the IDS (laptop PC) because the PDS (Pocket PC) does not support the EVAP system test.

EVAP system test out line

The EVAP system test, which can substituted for the run drive cycle as an EVAP control system repair confirmation method, can detect the small/large leak or blockage without run-drive cycle. NOTE: M-MDS can not detect "VERY SMALL LEAK". To identify the leak point, please use the leak tester or ultrasonic leak detector.

Scheme 16

Scheme 16: EVAP system test description

The EVAP system test finds gas leaks or blockage of EVAP system using the changes of the fuel tank pressure. This test starts after sending an on-demand test signal from the M-MDS to the PCM. This test consists of three stages, and each stage is performed automatically as follows: Stage 1 test. (Test for large leak or blockage) M-MDS send the stage 1 test start signal to the PCM. PCM controls the CV solenoid valve and purge solenoid valve to control the tank pressure to the targeted value. M-MDS detect the large leak or the purge line blockage if the tank pressure does not arrive at the target vacuum in specified period.

Stage 2 test. (Test for small leak)

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When fuel tank pressure arrived at the targeted pressure at stage 1 test, M-MDS send the stage 2 test signal to the PCM to turn off the purge solenoid to keep the tank pressure.
M-MDS detect the small leak if the tank pressure can not keep within the target in specified period. Stage 3 test. (Test for blockage) M-MDS send the stage 3 test signal to the PCM to turn off the CV solenoid for check the blockage of EVAP system. M-MDS detect blockage of the CV solenoid valve or air filter if the tank pressure does not arrive at the target (atmosphere).

Scheme 19

Scheme 19: EVAP system malfunction judgment

M-MDS detect the small/large leak or blockage based on fuel tank pressure at the end of EVAP Test.

Scheme 20

Scheme 20: Evaporative system test procedure

Verify that all PIDs within the following specifications. NOTE: To successfully perform this procedure, all PIDs must be within the specifications before proceeding to the next step.
Select the following items from the initialization screen of the M-MDS. Select the "Powertrain". Select the "Fuel". Select the "EVAP Test". Verify that ECT and IAT are within the specifications at the confirmation screen. To successfully perform this procedure, ECT and IAT must be within the spec before proceeding to the next step. Fuel Level must be maintained within 15%-85% . PCM will cancel the EVAP Test If the Fuel Level is lower than 15% or higher than 85%.
Verify the test results described on the M-MDS and follow the instructions.

Scheme 21

Scheme 21: EVAP system leak inspection using leak tester

Scheme 22

Perform the following SST (EVAP System Tester 134-01049A) self-test: NOTE: If the tester does not work correctly during the self-test, refer to the tester operators manual for a more detailed self-test procedure. Verify that the control valve on the panel is in the HOLD position then open the nitrogen bottle valve. Connect the vehicle interface hose (part of the SST ) to the SELF-TEST port located on the control panel. Hand tighten the fitting. (Do not overtighten.) Turn the control valve to the TEST position. The gauge should read 331-381 mm {13-15 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 tester operators manual.
Connect the SST to the vehicle. Verify that the control valve on the panel is in the HOLD position then open the nitrogen bottle valve. Remove the fuel-filler cap from the vehicle. If the fuel-filler cap is not a MAZDA part or equivalent, replace it. NOTE: INSPECT FUEL FILLER CAP AND FILLER NECK Visually inspect for damage, insufficient sealing, rust, cracks or warps for filler cap and filler neck. Repair or replace if necessary. Connect the receiver assembly ( SST: 134-01059) to the vehicle cap test hose assembly (part of the SST ) and the fuel-filler cap from the vehicle. Connect the cap adaptor ( SST : 134-01058) to the vehicle cap test hose assembly (part of the SST ) and to the fuel-filler neck. Connect the vehicle interface hose (part of the SST ) to the center fitting of the vehicle cap test hose assembly (part of the SST ).
Connect the M-MDS to the DLC-2.
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 canister vent value. NOTE: The canister vent value is closed for 10 min unless the following any actions are done: The engine is started. The ignition switch is turned off position.
Make sure the control valve on the 134-01049A is in the HOLD position and that the valve on the cylinder of nitrogen gas is open.
Turn the control valve to the open position and let the system fill. You should note a drop in the gauge pressure along with the flow meter being pegged at maximum flow for several minutes depending on how full or empty the fuel tank is, and how long it takes to completely fill and pressurize the evaporative emissions system hoses.
If the gauge and the flow meter do not settle to a measurable level after 2-3 min , then refer to the Mazda Workshop Manual to verify that the canister vent valve is properly closed. If canister vent valve is properly closed. The EVAP system has large leakage. Check for leakage and repair as necessary.
Verify 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 H20) of the Evaporative Emissions Tester operators manual (134-01067).

Note. Turn the control valve to the HOLD position then disconnect the SST.

Symptom Troubleshooting [L3 with Tc] - Engine: Diagnosis Mazda CX-7 I рестайлинг

SYMPTOM DIAGNOSTIC INDEX [L3 WITH TC]

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Diagnostic procedure

Inspection Method for Switch Connectors or Wires

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Inspection Method for Sensors

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Intake Manifold Vacuum Inspection

Engine coolant temperature compensation inspection

Load compensation inspection

Throttle position (TP) sweep inspection

Fuel Cut Control System Inspection

Fuel Pump Control System Inspection

Fuel Pump Speed Control Inspection

Spark Test

EGR Control System Inspection

Purge Control System Inspection

A/C Cut-off Control System Inspection

Cooling Fan Control System Inspection

Evaporative Emission (EVAP) System Leak Inspection

EVAP system leak inspection using the M-MDS

EVAP system test out line

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More articles — Symptom Troubleshooting [L3 with Tc] - Engine

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