Hino 600, Workshop Manual, Page: 41 / 451

GENERAL INTRODUCTION (CHASSIS) GN02–35
3. WATER SPRINKLING METHOD: When a malfunction seems to
occur on a rainy day or in high-humidity.
(1) Sprinkle water onto the vehicle and check if the malfunction occurs.
NOTICE
•
Never sprinkle water directly into the engine compartment. Indi-
rectly change the temperature and humidity by spraying water
onto the front of the radiator.
•
Never apply water directly onto the electronic components.
HINT
If the vehicle has or had a water leakage problem, the leakage may
have damaged the ECU or connections. Look for evidence of corro-
sion or short circuits. Proceed with caution during water tests.
4. HIGH ELECTRICAL LOAD METHOD: When a malfunction seems
to occur when electrical load is excessive.
(1) Turn on the heater blower, headlight, rear window defogger and all
other electrical loads. Check if the malfunction reoccurs.
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