Engine Cooling System (H6DO): Diagnosis Subaru Outback BR рестайлинг

DIAGNOSIS

Radiator main and sub fans do not rotate under the above conditions.

INSPECTION

Note. When adding the engine coolant, always use SUBARU Super Coolant.

1. Park the vehicle on a level surface.
2. Check the engine coolant amount, and if the coolant level is low, check for the coolant leakage, and then add the engine coolant. Make sure the engine coolant level in the reservoir tank is between "FULL" and "LOW" with the engine in a cold condition. Open the radiator cap and make sure that the radiator is filled with the engine coolant up to its filler neck position.

Scheme 46

1. Lift up the vehicle.
2. Remove the under cover. Refer to «REMOVAL»(ref-565181-S28182960572013071000000) .
3. Remove the drain plug to drain engine coolant into container. NOTE: Remove the radiator cap so that engine coolant will drain faster.
4. Install the drain plug.
5. Install the under cover. Refer to «INSTALLATION»(ref-565181-S36610771312013071000000) .

Scheme 47

1. Pour cooling system conditioner from the filler neck of the radiator. Cooling system protective agent: Refer to «SPECIFICATION»(ref-565167-S04848912622013071000000) .
2. Pour engine coolant into the radiator up to the filler neck position. Recommended engine coolant: Refer to «SPECIFICATION»(ref-565167-S04848912622013071000000) . Engine coolant level: Refer to «SPECIFICATION»(ref-565167-S04848912622013071000000) . Engine coolant concentration: Refer to «ADJUSTMENT»(ref-565167-S27253142302013071000000) . NOTE: The SUBARU Super Coolant contains anti-freeze and anti-rust agents, and is especially made for Subaru engines with an aluminum cylinder block. Always use SUBARU Super Coolant, since other coolant may cause corrosion.
3. Fill engine coolant into the reservoir tank up to "FULL" level.
4. Close the radiator cap and start the engine. Race 5 to 6 times at 3, 000 rpm or less, then stop the engine. (Complete this operation within 40 seconds.)
5. Wait for one minute after the engine stops, and open the radiator cap. If the engine coolant level drops, add engine coolant into radiator up to the filler neck position.
6. Perform the procedures 4) and 5) again.
7. Attach the radiator cap and reservoir tank cap properly.
8. Start the engine and operate the heater at maximum hot position and the blower speed setting to "LO".
9. Run the engine at 2, 000 rpm or less until radiator fan starts and stops. NOTE: Be careful with the engine coolant temperature to prevent overheating.
10. Stop the engine and wait until the engine coolant temperature lowers to 30°C (86°F) or less.
11. Open the radiator cap. If the engine coolant level drops, add engine coolant into the radiator up to the filler neck position and the reservoir tank to "FULL" level.
12. Attach the radiator cap and reservoir tank cap properly.
13. Set the heater setting to maximum hot position and the blower speed setting to "LO" and start the engine. Perform racing at 3, 000 rpm or less. If the flowing sound is heard from the heater core, repeat the procedures from step 9 ).

1. Check the water pump bearing for smooth rotation.
2. Check the water pump sprocket for abnormalities.
3. Make sure the impeller is not abnormally deformed or damaged.
4. After water pump installation, check pulley shaft for engine coolant leaks or noise. If leaks or noise are noted, replace the water pump assembly.

Scheme 48

Scheme 49

1. Lift up the vehicle.
2. Remove the under cover. Refer to «REMOVAL»(ref-565181-S28182960572013071000000) .
3. Drain engine coolant. Refer to «DRAINING OF ENGINE COOLANT»(ref-565167-S19351012342013071000000) .
4. Remove the radiator outlet hose from the radiator lower and the thermostat cover.
5. Remove the thermostat cover, and then remove the thermostat.

1. Check that the radiator does not have deformation, cracks or damage.
2. Check that the hose has no cracks, damage or loose part.
3. Remove the radiator cap, fill the radiator with engine coolant, and then install the radiator cap tester to the filler neck of radiator.
4. Apply a pressure of 157 kPa (1.6 kgf/cm 2 , 23 psi) to the radiator, and check the following items. Leakage from the radiator or its vicinity Leakage from the hose or its connections CAUTION: Engine should be turned off. Wipe engine coolant from check points in advance. Be careful not to deform the filler neck of the radiator when installing and removing the radiator cap tester. Be careful of engine coolant from spurting out when removing the radiator cap tester.

Scheme 50

1. Check that the radiator cap does not have deformation, cracks or damage.
2. Attach the radiator cap tester to radiator cap.
3. Increase pressure until the radiator cap tester gauge needle stops. Radiator cap is functioning properly if it holds the service limit pressure for 5 - 6 seconds. Replace the radiator cap if its valve opens at less than the service limit. Standard: 93 - 123 kPa (0.95 - 1.25 kgf/cm 2 , 14 - 18 psi) Service limit: 83 kPa (0.85 kgf/cm 2 , 12 psi) CAUTION: Be sure to remove foreign matter and rust from the cap in advance. Otherwise, results of pressure test will be incorrect.

Scheme 51

Scheme 52

Scheme 53

1. Remove the collector cover. NOTE: Follow the steps below when removing the collector cover. Pull up the two points at the rear (A). Pull up the two points at the front (B) while moving them forward.
2. Disconnect the ground cable from battery.
3. Lift up the vehicle.
4. Remove the under cover. Refer to «REMOVAL»(ref-565181-S28182960572013071000000) .
5. Drain engine coolant. Refer to «DRAINING OF ENGINE COOLANT»(ref-565167-S19351012342013071000000) .
6. Disconnect the integrated connector of radiator main fan & fan motor and radiator sub fan & fan motor.
7. Lower the vehicle.
8. Remove the air intake duct. Refer to «REMOVAL»(ref-565165-S00196848762013071000000) .
9. Remove the grille bracket. NOTE: Remove ten clips when removing the grille bracket.
10. Remove the reservoir tank. Refer to «REMOVAL»(ref-565167-S25209266492013071000000) .
11. Remove radiator inlet hoses LH and RH only on radiator side.
12. Remove the ATF radiator hose from the clip of the radiator fan shroud.
13. Remove bolts on the upper side of radiator fan shroud.
14. Remove the radiator fan shroud. NOTE: When pulling up the radiator fan shroud, be careful not to damage the radiator hose or ATF radiator hose.

Check that the radiator main fan, radiator main fan shroud and main fan motor do not have deformation, cracks or damage.

Check that the radiator sub fan, radiator sub fan shroud and sub fan motor do not have deformation, cracks or damage.

Scheme 54

1. Pull out the over flow hose.
2. Remove bolts which secure the reservoir tank, and remove the reservoir tank.

1. Check that the reservoir tank does not have deformation, cracks or damage.
2. Check the over flow hose for cracks or damage.
3. Make sure the engine coolant level is between "FULL" and "LOW".

Scheme 55

1. Disconnect the ground cable from battery.
2. Remove the radiator fan control unit. Disconnect the connector (A) from the radiator fan control unit. Remove screws which secure the radiator fan control unit.