Lexus IS300 2005 - Water Sprinkling Method

B02389
B02390
HEAT METHOD: When the problem seems to occur when the suspect area is heated.2
NOTICE:
3 WATER SPRINKLING METHOD:
(1)
(2)
4 OTHER: When a malfunction seems to occur when electrical load is excessive.
When the malfunction seems to occur on a rainy day or in a
high-humidity condition.
Heat the component that is the likely cause of the malfunction
with a hair dryer or similar device. Check whether or not if the
malfunction occurs.
Sprinkle water onto the vehicle and check whether or not if the
malfunction occurs.
Turn on all electrical loads including the heater blower, head
lights, rear window defogger, etc. and check to see if the mal-
function occurs.
ON
HINT:
If a vehicle is subject to water leakage, the leaked water may
damage the ECU. When testing a vehicle with a water leakage
problem, special caution must be taken.
Malfunction
Do not heat to more than 60°C (140°F). (Exceeding this
temperature may damage components.)
Do not apply heat directly to parts in the ECU.
(1)
(2)
Never sprinkle water directly into the engine compart-
ment. Indirectly change the temperature and humidity
by applying water spray onto the front of the radiator.
Never apply water directly onto electronic components.
NOTICE:
IN-28
-INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
28A uthor: Date:
2005 LEXUS IS300 (RM1140U)