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Overall Function Check
=NGEC0704
Use this procedure to check the overall function of the engine
coolant over temperature enrichment protection check, a DTC
might not be confirmed.
WARNING:
Never remove the radiator cap when the engine is hot. Serious
burns could be caused by high-pressure fluid escaping from
the radiator.
Wrap a thick cloth around the cap. Carefully remove the cap
by turning it a quarter turn to allow built-up pressure to
escape. Then turn the cap all the way off.
SEF621W
WITH CONSULT-II
NGEC0704S01
1. Check the coolant level and mixture ratio (Using coolant tester)
in the reservoir tank and radiator.
Allow engine to cool before checking coolant level and
mixture ratio.
쐌 If the coolant level in the reservoir and/or the radiator is below
the proper range, skip following steps and go to “Diagnostic
Procedure”, EC-912.
쐌 If the coolant mixture ratio is out of range between 45 to 55%,
replace the coolant. Refer to “Changing Engine Coolant”,
MA-26.
a) Fill radiator with coolant up to specified level with a filling speed
of 2 liters per minute like pouring coolant by kettle. Be sure to
use coolant with the proper mixture ratio. Refer to “Anti-freeze
Coolant Mixture Ratio”, MA-15.
b) After refilling coolant, run engine to ensure that no water-flow
noise is emitted.After checking or replacing coolant, go to step
3) below.
2. Confirm whether customer filled the engine coolant or not. If
customer filled the engine coolant, skip following steps and go
to “Diagnostic Procedure”, EC-912.
3. Turn ignition switch ON.
4. Perform “COOLANT TEMP” in “ACTIVE TEST” mode with
CONSULT-II.
쐌 Set “COOLANT TEMP” to 95°C (203°F) and make sure that
cooling fan operates. If NG, go to “Diagnostic Procedure”,
EC-912. After repair, go to next step.
5. Check for blocked coolant passage.
Warm up engine to normal operating temperature, then grasp
upper and lower radiator hoses and make sure that coolant
flows.
If NG, go to step 6 of “Diagnostic Procedure”, EC-912. After
repair, go to next step.
Be extremely careful not to touch any moving or adjacent
parts.
6. Check radiator for blocked air passage
Check for blocked condenser or radiator (condenser or radia-
tor fins damaged, condenser or radiator clogged), after market
fog lamps ...etc. Check for condenser or radiator fin damage,
shroud damage, vehicle front end for clogging of debris or
insects ...etc.
Check for improper fitting of front end cover, damaged radia-
tor grille or bumper, vehicle frontal area damaged by collision
but not repaired.
If NG, take appropriate action and then go to next step.
7. Check ECT sensor for proper operation. Refer to step 7 of
DTC P0217 COOLANT OVERTEMPERATURE ENRICHMENT
PROTECTION (WITH ELECTRIC COOLING FAN)
VG33E
Overall Function Check
EC-908
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