Toyota ZZT230 series Repair Manual page 30

)
2
HEAT METHOD: When the problem seems to occur when the suspect area Is heated.
the
with
Heat component
hair dryer or similar object. Check
occu rs . a
Do
NOTICE:
ls
(1)
not heat to more than
(2) Do
limited not to damage the components.)
not apply
WATER SPRINKLING METHOD: When the malfunction seems to
3
water onto the vehicle and
Sprinkle
occurs.
lion
NOTICE:
(1) Never sprinkle water directly into the engine compart­
ment, but Indirectly change the temperature and hu­
midity by applying
(2) surface.
Never apply water directly onto the electronic campo·
nents.
)
HINT:
If a vehicle is subject
ob
contaminate the
m, special cauti o n must be taken.
pr
age le
4 OTHER; When a malfunction seems to occur when electrical load is excessive.
Tum
on all electrical loads
rear window defogger, etc. and check to see if the mal­
ligrts,
function occ u rs.
INTRODUCTION
that is th e likely cause of the malfunction
to
see
60 • c
(140 ·F). (Temperature
heat
directly to parts in the ECU.
check
to see
water
spray onto the radiator front
to
water leakage, the leaked water may
ECU. When testing a vehicle with a water l e ak-
including the heater blower, head
-
HOWTOTRO UBLESHOOT ECUCO NTROLLEO
SYSTEMS
if the malfunction
Fl�334
high-humidity condition.
if
malfunc·
the
Fl6&49
occur on a rainy day or
in a
IN-25
BIJ2390