Quick Diagnostic Chart

X: Applied 

Possible factor Troubleshooting item			Starter motor malfunction (mechanical or electrical)	Starter circuit Including Ignition switch is open	Improper engine oil level	Low or dead battery	Charging system malfunction	Improper engine compression	Improper oil level gauge	Base engine malfunction	Drive plate is seized	Improper tension or damaged drive belts	Improper engine coolant level	Water and anti-freeze mixture is improper	Cooling system malfunction (such as radiator, hoses. overflow system, thermostat)	Cooling fan system malfunction
1	Blown fuses
2	Check engine light illuminates
3	Will not crank		X	X		X				X	X
4	Hard to start/long crank/erratic start/erratic crank		X					X
5	Engine stalls	After start/at idle						X
6	Cranks normally but will not start							X
7	Engine oil warning light illuminated/message related to engine hydraulic pressure malfunction indicated in display				X					X
8	Engine runs rough/rolling idle							X
9	Fast idle/runs on														X
10	Low idle/stalls during deceleration						X	X
11	Engine stalls/quits	Acceleration/cruise						X
	Engine runs rough	Acceleration/cruise						X
	Misses	Acceleration/cruise						X
	Buck/jerk	Acceleration/cruise/deceleration						X
	Hesitation/stumble	Acceleration						X
	Surges	Acceleration/cruise						X
12	Lack/loss of power	Acceleration/cruise						X
13	knocking/pinging	Acceleration/cruise													X
14	Poor/fuel economy							X					X		X	X
15	Emission compliance							X					X		X
16	High oil consumption/leakage								X	X
17	Cooling system concerns	Overheating					X					X	X	X	X	X
18	Cooling system concerns	Runs cold													X	X
19	Exhaust smoke							X							X
20	Fuel odor (in engine compartment)
21	Engine noise						X			X		X
22	Vibration concerns (engine)
23	A/C does not work sufficiently
24	A/C in always on or A/C compressor runs continuously
25	Sulfuric smell occurs
26	Fuel refill concerns
27	Fuel filling shut off concerns
28	Spark plug condition							X

X: Applied 

Possible factor Troubleshooting item			Engine at transaxle mounts are improperly installed	Cooling fan or condenser fan seats improper	Fuel quality	Improper engine oil viscosity	Improper valve timing	Oil leakage	Improper oil or fluid level	Coolant leakage	Electric variable valve timing system malfunction	Hydraulic variable valve liming system malfunction	Engine overheating	Air cleaner element clogged or restricted	Air leakage from intake-air system (loose tubes, cracks, gaskets breakage)	Air suction In Intake-air system	Intake-air system restriction
1	Blown fuses
2	Check engine light illuminates
3	Will not crank
4	Hard to start/long crank/erratic start/erratic crank				X	X	X						X		X	X	X
5	Engine stalls	Alter start/at idle			X		X				X	X	X		X	X	X
6	Cranks normally but will not start				X		X				X		X		X	X	X
7	Engine oil warning light illuminated/message related to engine hydraulic pressure malfunction indicated in display							X	X
8	Engine runs rough/rolling idle				X	X	X				X	X	X		X	X	X
9	Fast idle/runs on															X
10	Low idle/stalls during deceleration		X		X		X									X	X
11	Engine stalls/quite	Acceleration/cruise	X		X		X						X	X	X	X	X
	Engine runs rough	Acceleration/cruise	X		X		X						X	X	X	X	X
	Misses	Acceleration/cruise	X		X		X						X	X	X	X	X
	Buck/jerk	Acceleration/cruise/deceleration	X		X		X						X	X	X	X	X
	Hesitation/stumble	Acceleration	X		X		X						X	X	X	X	X
	Surges	Acceleration/cruise	X		X		X						X	X	X	X	X
12	Lack/loss of power	Acceleration/cruise			X		X						X	X	X		X
13	Knocking/pinging	Acceleration/cruise			X										X	X
14	Poor fuel economy				X		X								X	X	X
15	Emission compliance						X						X			X	X
16	High oil consumption/leakage					X		X
17	Cooling system concerns	Overheating								X
18	Cooling system concerns	Runs cold		X
19	Exhaust smoke						X	X		X				X	X	X	X
20	Fuel Odor (in engine compartment)
21	Engine noise										X				X	X
22	Vibration concerns (engine)		X	X
23	A/C does not work sufficiently
24	A/C is always on or A/C compressor runs continuously
25	Sulfuric smell occurs				X
26	Fuel refill concerns
27	Fuel filling shut off concerns
28	Spark plug condition																X

X: Applied 

Possible factor Troubleshooting item			Drive by-wire control system improper operation	Drive-by-wire control system operates with broke override system	Throttle body malfunction	Purge solenoid valve malfunction	Vacuum leakage (vacuum hose damage, misrouting)	Ignition coil malfunction (E.g. open, short or cracks)	Initial ignition timing misadjustment (CKP and pulse wheel misadjustment)	Spark plug malfunction	Fuel pump (low-pressure side) malfunction (mechanically or electrically)	Pressure regulator (built-into fuel pump unit at fuel tank) malfunction	Inadequate fuel pressure (high-pressure side)	Inadequate fuel pressure (low-pressure side)	Fuel line restricted or clogged
1	Blown fuses
2	Check engine light illuminates
3	Will not crank
4	Hard to start/long crank/erratic start/erratic crank		X			X	X	X		X	X		X	X	X
5	Engine stalls	After start/at idle	X			X	X	X			X		X	X	X
6	Cranks normally but will not start		X			X	X	X			X		X	X	X
7	Engine oil warning light illuminated/message related to engine hydraulic pressure malfunction indicated in display
8	Engine runs rough/rolling idle		X			X	X	X		X	X		X	X	X
9	Fast idle/runs on		X		X		X
10	Low idle/stalls during deceleration		X			X	X				X		X	X	X
11	Engine stalls/quits	Acceleration/cruise	X	X	X	X	X			X	X		X	X	X
	Engine runs rough	Acceleration/cruise		X	X	X	X			X	X		X	X	X
	Misses	Acceleration/cruise		X	X	X	X			X	X		X	X	X
	Buck/jerk	Acceleration/cruise/deceleration		X	X	X	X			X	X		X	X	X
	Hesitation/stumble	Acceleration		X	X	X	X			X	X		X	X	X
	Surges	Acceleration/cruise		X	X	X	X			X	X		X	X	X
12	Lack/loss of power	Acceleration/cruise		X	X	X	X	X		X	X		X	X	X
13	Knocking/Ringing	Acceleration/cruise								X
14	Poor fuel economy						X			X	X		X	X	X
15	Emission compliance					X	X	X		X	X		X	X	X
16	High oil consumption/leakage
17	Coding system concerns	Overheating
18	Cooling system concerns	Runs cold
19	Exhaust smoke							X		X	X		X	X	X
20	Fuel odor (in engine compartment)					X	X
21	Engine noise		X			X	X
22	Vibration concerns (engine)
23	A/C closes not work sufficiently
24	A/C in always on or A/C compressor runs continuously
25	Sulfuric smell occurs
26	Fuel refill concerns
27	Fuel refill shut off concerns
28	Spark plug condition									X

X: Applied 

Possible factor Troubleshooting item			Fuel injector malfunction (inoperative)	Fuel filter cap malfunction	Fuel filters restricted or clogged	Relief valve malfunction (built-into high pressure fuel pump)	Spill valve control solenoid valve malfunction (built-into high pressure fuel pump)	Fuel leakage at fuel line	High pressure fuel pump malfunction	Incorrect fuel injection timing or amount	Improper air/fuel ratio mixture control	Exhaust system or catalytic converter restriction	Exhaust gas leakage	Catalytic converter malfunction	PCV valve malfunction	Fuel tank vent system malfunction	Charcoal canister malfunction
1	Blown fuses
2	Cheek angina light illuminates
3	Will not crank
4	Hard to start/long crank/erratic start/erratic crank		X		X	X	X	X	X	X	X	X			X
5	Engine stalls	Attar start/at idle	X		X	X	X	X	X	X	X	X			X
6	Cranks normally but will not start		X		X	X	X	X	X	X	X	X			X
7	Engine oil warning light illuminated/message related to engine hydraulic pressure malfunction indicated in display
8	Engine runs rough/rolling idle		X		X	X	X	X	X	X		X			X
9	Fast idle/runs on		X				X
10	Low idle/stalls during deceleration		X		X	X	X	X	X	X
11	Engine stalls/quits	Acceleration/cruise	X			X	X	X	X	X	X	X	X		X
	Engine runs rough	Acceleration/cruise	X			X	X	X	X	X	X	X	X		X
	Misses	Acceleration/cruise	X			X	X	X	X	X	X	X	X		X
	Buck/jerk	Acceleration/cruise/deceleration	X			X	X	X	X	X	X	X	X		X
	Hesitation/Stumble	Acceleration	X			X	X	X	X	X	X	X	X		X
	Surges	Acceleration/cruise	X			X	X	X	X	X	X	X	X		X
12	Lack/loss of power	Acceleration/cruise	X			X	X	X	X	X		X			X
13	Knocking/pinging	Acceleration/cruise
14	Poor fuel economy		X			X	X	X	X	X		X			X
15	Emission compliance					X	X	X	X	X	X	X	X	X	X
16	High oil consumption/leakage														X
17	Coding system concerns	Over/heating
18	Coding system concerns	Runs cold
19	Exhaust smoke					X	X		X	X			X		X
20	Fuel odor (in engine compartment)			X				X
21	Engine noise		X						X
22	Vibration concerns (engine)
23	A/C does not work sufficiently
24	A/C is always on or A/C compressor runs continuously
25	Sulfuric smell occurs
26	Fuel refill concerns
27	Fuel filling shut off concerns
28	Spark plug condition									X		X

X: Applied 

Possible factor Troubleshooting item			Constant voltage supply circuit malfunction	Main relay malfunction [mechanically or electrically)	No battery power supply to PCM	Poor PCM ground or vehicle ground (open)	Electrical connector disconnection	Oil pressure switch or related circuit malfunction	ECT sensor or related circuit malfunction	Transaxle range sensor malfunction	Brake switch or related circuit malfunction	A/F sensor or HO2S or related circuit malfunction	IAT sensor No. 1 (integrated in MAF sensor/IAT sensor No. 1) or related circuit malfunction	IAT sensor No. 2 (integrated in MAP sensor/IAT sensor No. 2) or related circuit malfunction	Fuel pressure sensor or related circuit malfunction	MAP sensor or related circuit malfunction
1	Blown fuses
2	Check engine light illuminates						X
3	Will not crank			X	X	X				X
4	Hard to start/long crank/erratic start/erratic crank					X	X		X			X			X	X
5	Engine stalls	After start/at idle			X	X	X		X			X			X	X
6	Cranks normally but will not start				X	X	X		X			X			X
7	Engine oil warning light illuminated/message related to engine hydraulic pressure malfunction indicated in display							X
8	Engine runs rough/rolling idle						X		X			X			X	X
9	Fast idle/runs on								X			X
10	Low idle/stalls during deceleration								X		X	X			X	X
11	Engine stalls/quits	Acceleration/cruise		X					X			X	X		X	X
	Engine runs rough	Acceleration/cruise		X					X			X	X		X	X
	Misses	Acceleration/cruise		X					X			X	X		X	X
	Buck/jerk	Acceleration/cruise/deceleration		X					X			X	X		X	X
	Hesitation/stumble	Acceleration		X					X			X	X		X	X
	Surges	Acceleration/cruise		X					X			X	X		X	X
12	Lack/loss of power	Acceleration/cruise							X			X	X		X	X
13	Knocking/pinging	Acceleration/cruise							X					X		X
14	Poor fuel economy								X				X		X	X
15	Emission compliance														X
16	High oil consumption/leakage
17	Cooling system concerns	Over/heating					X		X
18	Cooling system concerns	Runs cold							X
19	Exhaust smoke								X			X	X		X	X
20	Fuel odor (in engine compartment)
21	Engine noise
22	Vibration concerns (engine)
23	A/C does not work sufficiently
24	A/C in always on or AC compressor runs continuously
25	Sulfuric smell occurs
26	Fuel refill concerns
27	Fuel filing shut off concerns
28	Spark plug condition								X			X

X: Applied 

Possible factor Troubleshooting item			Intake CMP sensor damaged (e.g. open of short circuit)	Intake CMP sensor pulse wheel (Intake camshaft) damaged	Exhaust CMP sensor damaged (e.g. open or short circuit)	Exhaust CMP sensor pulse wheel (exhaust camshaft) damaged	Improper gap between CKP sensor and pulse wheel	CKP sensor damaged (e.g. open or short circuit)	CKF Sensor pulse wheel damaged	MAF sensor or related circuit malfunction	KS or related circuit malfunction	TP sensor or related circuit malfunction	APP sensor or related circuit malfunction	Improper vehicle speed signal	Cruise control system operation improperly	Check valve malfunction
1	Blown fuses
2	Check engine light illuminates
3	Will not crank
4	Hard to start/long crank/erratic start/erratic crank		X	X	X	X		X	X	X
5	Engine stalls	After start/at idle	X	X	X	X		X	X	X			X
6	Cranks normally but will not start				X	X		X	X	X			X
7	Engine oil warning light illuminated/message related to engine hydraulic pressure malfunction indicated in display
8	Engine runs rough/rolling idle		X	X	X	X		X	X	X			X
9	Fast idle/runs on												X		X
10	Low idle/stalls during deceleration		X	X	X	X		X	X	X		X	X
11	Engine stalls/quits	Acceleration/cruise	X	X	X	X		X	X	X		X	X
	Engine runs rough	Acceleration/cruise	X	X	X	X		X	X	X		X	X
	Misses	Acceleration/cruise	X	X	X	X		X	X	X		X	X
	Buck/jerk	Acceleration/cruise/deceleration	X	X	X	X		X	X	X		X	X
	Hesitation/Stumble	Acceleration	X	X	X	X		X	X	X		X	X
	Surges	Acceleration/cruise	X	X	X	X		X	X	X		X	X
12	Lack/loss of power	Acceleration/cruise	X	X	X	X		X	X	X			X
13	Knocking/pinging	Acceleration/cruise								X	X
14	Poor/fuel economy		X	X	X	X		X	X	X		X	X
15	Emission compliance
16	High oil consumption/leakage
17	Cooling system concerns	Over/heating
18	Cooling system concerns	Runs cold
19	Exhaust smoke									X		X	X
20	Fuel odor (in engine compartment)															X
21	Engine noise
22	Vibration concerns (engine)
23	A/C does not work sufficiently
24	A/C in always on or AC compressor runs continuously
25	Sulfuric smell occurs
26	Fuel refill concerns
27	Fuel filling shut off concerns
28	Spark plug condition									X

X: Applied 

Possible factor Troubleshooting item			A/C system improper operation	Improper refrigerant charging amount	A/C relay (A/C control signal circuit) malfunction	A/C compressor magnetic clutch malfunction	ATX related parte malfunction	Improper ATF level	Brake dragging	Loose parts	Improper balance of wheels and tires	Drive line malfunction	Suspension malfunction	Immobilizer system operating properly	Immobilizer system or related circuit malfunction	Advanced keyless entry system malfunction
1	Blown fuses
2	Check engine light illuminates
3	Will not crank														X
4	Hard to start/long crank/erratic start/erratic crank
5	Engine stalls	After start/at idle	X		X
6	Cranks normally but will not start
7	Engine oil warning light illuminated/message related to engine hydraulic pressure malfunction indicated in display
8	Engine runs rough/rolling idle		X		X
9	Fast idle/runs on		X		X		X
10	Low idle/stalls during deceleration					X	X			X
11	Engine stalls/quits	Acceleration/cruise	X				X			X
	Engine runs rough	Acceleration/cruise	X				X			X
	Misses	Acceleration/cruise	X				X			X
	Buck/jerk	Acceleration/cruise/deceleration	X				X			X
	Hesitation/stumble	Acceleration	X				X			X
	Surges	Acceleration/cruise	X				X			X
12	Lack/loss of power	Acceleration/cruise	X		X		X		X
13	Knocking/pinging	Acceleration/cruise
14	Poor fuel economy		X					X	X		X
15	Emission compliance
16	High oil consumption/leakage
17	Cooling system concerns	Overheating	X	X
18	Cooling system concerns	Runs cold
19	Exhaust smoke
20	Fuel odor (in engine compartment)
21	Engine noise		X			X
22	Vibration concerns (engine)									X	X	X	X
23	A/C does not work sufficiently		X	X	X	X
24	A/C in always on or AC compressor runs continuously		X		X	X
25	Sulfuric smell occurs
26	Fuel refill concerns
27	Fuel filling shut off concerns
28	Spark plug condition

X: Applied 

Possible factor Troubleshooting item			Instrument cluster malfunction	Diver-side buckle switch malfunction	Door latch switch or liftgate latch switch malfunction	Hood latch switch malfunction	Battery malfunction (deterioration)	Ambient temperature sensor malfunction	ABS wheel-speed sensor malfunction	Steering angle sensor malfunction	Driver-side air mix actuator malfunction	Climate control unit malfunction	Keyless antenna malfunction	Boost air temperature sensor or related circuit malfunction	Boost pressure sensor or related circuit malfunction	Three way solenoid valve malfunction	EGR valve malfunction	Turbocharger malfunction	Ejector malfunction	Fuel pump control module malfunction
1	Blown fuses
2	Check engine light illuminates		X
3	Will not crank		X				X
4	Hard to start/long crank/erratic start/erratic crank
5	Engine stalls	After start/at idle
6	Cranks normally but will not start
7	Engine oil warning light illuminated/message related to engine hydraulic pressure malfunction indicated in display		X
8	Engine runs rough/rolling idle
9	Fast idle/runs on
10	Low idle/stalls during deceleration
11	Engine stalls/quits	Acceleration/cruise
	Engine runs rough	Acceleration/cruise
	Misses	Acceleration/cruise
	Buck/jerk	Acceleration/cruise/deceleration
	Hesitation/Stumble	Acceleration
	Surges	Acceleration/cruise
12	Lack/loss of power	Acceleration/cruise												X	X	X	X	X		X
13	Knocking/pinging	Acceleration/cruise												X	X
14	Poor fuel economy
15	Emission compliance																		X	X
16	High oil consumption/leakage																	X
17	Cooling system concerns	Overheating	X															X
18	Cooling system concerns	Runs cold	X
19	Exhaust smoke													X	X			X
20	Fuel odor (in engine compartment)																		X
21	Engine noise																	X
22	Vibration concerns (engine)
23	A/C does not work sufficiently		X									X
24	A/C in always on or AC compressor runs continuously											X
25	Sulfuric smell occurs
26	Fuel refill concerns
27	Fuel filling shut off concerns
28	Spark plug condition