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TROUBLESHOOTING
22) Check Engine Coolant Circulation
23) Check Engine Coolant Amount or Leakage Location
Reduction of engine coolant circulation amount due
to blockage in the piping or other causes will cause
a large difference between the radiator inlet and
outlet temperatures.
1. Check temperature difference between radiator
inlet and outlet to judge if the engine coolant circu-
lation is normal.
2. Check engine coolant temperature during engine
running by selecting "Engine coolant temperature
(code No. 51)" in the monitor mode of the board
maintenance functions.
Rough guide of difference between the radiator inlet and outlet temperatures
In cooling 50 ~ 82 ℉ (10 ~ 28 ℃ )
1. Check the engine coolant amount.
1) Select "Engine coolant refilling (code No. 0A)"
in the check mode of the board maintenance
functions. Then turn the engine coolant pump
ON.
2) Check that the engine coolant level in the reserve
tank is not lower than reference line.
3) Remove the radiator cap and check if the water
level is full.
2. Check for engine coolant leakage.
1) Check the engine coolant hoses for cracks or
deterioration.
2) Check if the engine coolant hose clamps are
attached securely.
3) Check the engine coolant hoses and connections
for leakage.
4) Check the radiator cap for leakage.
Temperature
difference
Reference line
Radiator cap
Radiator cap
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