Toyota COMPUTER-CONTROLLED SYSTEM - Page 163

SYMPTO M
Engine does
not sta rt
There is
combustion
but engine
does not sta rt
(incomplete
combustion
)
Sta rt ing is difficult
Col d
Ho t
Always
TROUBLESHOOTING - Symptom Char t
SYSTE M
Fuel syste
m
Cold sta
rt
system
POSSIBLE CAUS E
COMPONENT PAR T
Circuit opening rela y
Injectors
Pressure regulato
r
Fuel filter, fuel lin e
Cold sta
rt injecto r
Sta
rt injector time S W
Ignition syste m
Air induction syste m
Electronic control
syste m
Cold sta rt
syste m
Air induction syste m
Electronic control
syste m
Fuel syste m
Cold sta rt syste m
Air induction syste m
Fuel syste m
Cold sta rt syste m
Ignition system
Spark plug
s
Air hose s
Air valv e
Manifold pressure
sensor (vacuum sensor )
Water temp . senso r
Cold sta rt injecto r
Sta rt injector time S W
ISC valv e
Air valv e
Water temp
. senso r
Intake air temp . senso r
Injector s
Pressure regulato
r
Cold sta
rt
injecto r
Air valv e
Circuit opening rela
y
Fuel filter, fuel lin e
Cold sta rt injecto r
Spark plugs
TYPE OF TROUBL
E
Won't go o n
Leakage, won't inject,
inject continuousl
y
Fuel pressure too lo w
Clogge d
Won't injec t
Won't go o n
Misfir e
Leakag e
Won't open fully, won't
open at al l
Voltage or resistance
are incorrect, open or
short circui
t
Won't injec t
Won't go o n
Won't open fully,
won't open at al l
Open or sho rt circui t
Leakag e
Fuel pressure too low
Leakag e
Won't open fully
STA circuit won't go o n
Cloggin g
Leakag e
Fouled
155