Troubleshooting
Troubleshooting Procedure s
Symptom Char t
Listed below are symptoms and probable causes for problems that DO NOT cause the Malfunction Indicator Lamp (MIL) to
come on. If the MIL was reported on, check the DTC.
Troubleshoot each probable cause in the order listed (from left to right) until the symptom is eliminated.
The probable cause and troubleshooting page reference can be found below.
SYMPTO M
Engine wil l no t star t
Hard startin g
Col d fas t idl e to o lo w
Col d fas t idl e to o hig h
Idl e spee d fluctuate s
Misfire o r roug h runnin g
Low powe r
Engin e stall s
Difficul t t o refue l
Fuel overflow s durin g refuelin g PROBABL
E CAUS E
2, 3 , 21 , 13 , 1
2 , 10 , 12 , 20 , 2 1
5, 6 , 7 , 4
5 , 6 , 7 , 9 , 8
5 , 14 , 15 , 6 , 7 , 9 , 8
Troubleshoo t fo r misfir e o n page
s 11-59 , 11-60
2 , 8 , 9 , 11 , 18,17 , 19 , 1 0
2, 5 , 10 , 21 , 7 , 3 , 1 6
20 , 2 2
20 , 2 2
Other Probable Causes for an engine that will not start:
— Compressio n — Starting syste m
— PGM-F I mai n rela y — Ignitio n syste m
— Engin e locke d u p — Overheatin g
— Timin g bel t — Battery
Probable Caus e
1
2
3
4
5
6
7
8
9
10
1 1
1 2
13
1 4
15
1 6
17
1 8
1 9
2 0
2 1
22
Pag e
11-6 6
(see DTC chart)
(see DTC chart)
(see DTC chart)
Sectio n 1 4
11-8 1
(see DTC chart)
11-10 6
System
Powertrai n Contro l Modul e (PCM )
Fue l pressur e
Crankshaf t Position/Camshaf t Positio n (CKP/CMP ) (Crankshaf t Position/Cylinde r Positio n
(CKP/CYP) ) senso r circui t
Intak e Ai r Temperatur e (IAT ) senso r circui t
Idl e Ai r Contro l (IAC ) valv e
Idl e Ai r Contro l (IAC ) therma l valv e
Idl e spee d adjustmen t
Throttl e bod y
Throttl e cabl e
Manifol d Absolut e Pressur e (MAP ) senso r
Throttl e Positio n (TP ) senso r
Barometri c pressur e (BARO ) senso r
Transmissio n rang e switc h signa l
Ai r conditionin g signa l
Alternato r F R Signa l
Brake peda l positio n switc h signa l
Ai r cleane r
Intak e Manifol d Runne r Contro l (IMRC ) syste m an d intak e ai r duc t
Thre e Wa y Catalyti c Converte r (TWC )
Evaporativ e emissio n (EVAP ) contro l
Contaminate d fue l
Fue l tan k vapo r contro l valv e
Probable Cause List (For the DTC Chart, see page 11-41)
(see DTC chart)
(see DTC chart)
(see DTC chart)
(see DTC chart)
11- 132
11- 123
11- 124
11- 155
11- 154
11- 116
11- 118
11- 155
11- 158
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