Engine Cooling System — Acura RDX I рестайлинг (2009-2012)

Scheme 1

Scheme 1: Component Location Index

Scheme 2

Scheme 2: Radiator Cap Test

Wait until the engine is cool, then carefully remove the radiator cap (A). Wet the radiator cap seal with engine coolant, then install it on a commercially available pressure tester (B).
Apply a pressure of 93-123 kPa (0.95-1.25 kgf/cm 2 , 13.5-17.8 psi).
Check for a drop in pressure.
If the pressure drops, replace the radiator cap.

Scheme 3

Scheme 3: Radiator Test

Wait until the engine is cool, then carefully remove the radiator cap, and fill the radiator with engine coolant to the top of the filler neck.
Attach a commercially available pressure tester (A) to the radiator, and apply a pressure of 93-123 kPa (0.95-1.25 kgf/cm 2 , 13.5-17.8 psi).
Inspect for engine coolant leaks, and a drop in pressure.
Remove the tester, then reinstall the radiator cap.

Scheme 4

Scheme 4: Fan Motor Test

Disconnect the 2P connectors from the radiator fan motor (A) and the A/C condenser fan motor (B).
Test the motor by connecting battery power to terminal No. 2 and ground to terminal No. 1.
If either the motor fails to run or does not run smoothly, replace it (see «FAN, FAN MOTOR, AND SHROUD REMOVAL AND INSTALLATION»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).

Thermostat Test

Replace the thermostat (see THERMOSTAT REPLACEMENT ) if it is stuck in the open position at room temperature.

To test a closed thermostat

Scheme 5

Scheme 5: Thermostat Test

Suspend the thermostat assembly (A) in a container of water. Do not let the thermostat and the thermometer (B) touch the bottom of the hot container.
Heat the water and check the temperature with a thermometer. Check the temperature when the thermostat first opens, and again when it is fully open.
Measure the lift height of the thermostat when it is fully open. Standard Thermostat Lift Height: Above 8.0 mm (0.315 in) min. Starts Opening: 169-176°F (76-80°C) Fully Open: 194°F (90°C)

Water Pump Inspection

Special Tools Required

A/C Clutch Holder Robinair 10204 or Kent-Moore J37872, commercially available

Scheme 6

Scheme 6: Water Pump Inspection

Scheme 7

Remove the front splash shield (see «FRONT SPLASH SHIELD REPLACEMENT»(/acura/rdx/i-2009-2012/remont/exterior-body-panels/#fenderwell__front-splash-shield-replacement) ).
Remove the drive belt (see «DRIVE BELT REMOVAL/INSTALLATION»(/acura/rdx/i-2009-2012/remont/charging-system/#charging-system__drive-belt-removalinstallation) ).
Hold the water pump pulley using the A/C clutch holder robinair 10204 (A) and remove the water pump pulley mounting bolts (B), then remove the water pump pulley.
Turn the water pump counterclockwise, and make sure that it turns freely. If it does not turn freely, replace the water pump (see «WATER PUMP REPLACEMENT»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system__water-pump-replacement) ). NOTE: When you check the water pump, you may see a small amount of "weeping" from the bleed holes (A). This is normal.
Install the water pump pulley.
Install the drive belt (see «DRIVE BELT REMOVAL/INSTALLATION»(/acura/rdx/i-2009-2012/remont/charging-system/#charging-system__drive-belt-removalinstallation) ).
Install the front splash shield (see «FRONT SPLASH SHIELD REPLACEMENT»(/acura/rdx/i-2009-2012/remont/exterior-body-panels/#fenderwell__front-splash-shield-replacement) ).

Water Pump Replacement

Special Tools Required

A/C Clutch Holder Robinair 10204 or Kent-Moore J37872, commercially available

Scheme 8

Scheme 8: Water Pump Replacement

Scheme 9

Drain the engine coolant (see «COOLANT CHECK»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Remove the front splash shield (see «FRONT SPLASH SHIELD REPLACEMENT»(/acura/rdx/i-2009-2012/remont/exterior-body-panels/#fenderwell__front-splash-shield-replacement) ).
Remove the drive belt (see «DRIVE BELT REMOVAL/INSTALLATION»(/acura/rdx/i-2009-2012/remont/charging-system/#charging-system__drive-belt-removalinstallation) ).
Hold the water pump pulley using the A/C clutch holder robinair 10204 (A), and remove the water pump pulley mounting bolts (B), then remove the water pump pulley.
Remove the water pump (A) by removing the six bolts.
Inspect, and clean the mating surface of the engine block.
Install the water pump with a new O-ring (B) in the reverse order of removal.
Clean up any spilled engine coolant.
Install the water pump pulley.
Install the drive belt (see «DRIVE BELT REMOVAL/INSTALLATION»(/acura/rdx/i-2009-2012/remont/charging-system/#charging-system__drive-belt-removalinstallation) ).
Install the front splash shield (see «FRONT SPLASH SHIELD REPLACEMENT»(/acura/rdx/i-2009-2012/remont/exterior-body-panels/#fenderwell__front-splash-shield-replacement) ).
Refill the radiator with engine coolant, and bleed the air from the cooling system with the heater valve open (see «COOLANT CHECK»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).

Scheme 10

Scheme 10: Coolant Check

Check the coolant level in the coolant reservoir. Make sure it is between the MAX mark (A) and the MIN mark (B).
If the coolant level in the coolant reservoir is at or below the MIN mark, add coolant to bring it between the MIN and MAX mark, then inspect the cooling system for leaks.
Check the coolant level in the radiator, and add Acura Long Life Antifreeze/Coolant Type 2 into the radiator up to the base of the filler neck, if needed.

Note. Always use Acura Long Life Antifreeze/Coolant Type 2. Using a non-Acura coolant can result in corrosion, causing the cooling system to malfunction or fail. Acura Long Life Antifreeze/Coolant Type 2 is a mixture of 50 % antifreeze and 50 % water. Do not add water.

Scheme 11

Scheme 11: Coolant Replacement

Scheme 12

Scheme 13

Wait until the engine is cool, then carefully remove the radiator cap.
Loosen the drain plug (A) and drain the coolant.
After the coolant has drained, tighten the radiator drain plug securely.
Remove, drain, reinstall the coolant reservoir.
Fill the coolant reservoir to the MAX mark (A) with Acura Long Life Antifreeze/Coolant Type 2.
Pour Acura Long Life Antifreeze/Coolant Type 2 into the radiator up to the base of the filler neck. NOTE: Always use Acura Long Life Antifreeze/Coolant Type 2. Using a non-Acura coolant can result in corrosion, causing the cooling system to malfunction or fail. Acura Long Life Antifreeze/Coolant Type 2 is a mixture of 50 % antifreeze and 50 % water. Do not add water. If the vehicle is regularly driven in very low temperatures (under -31°F, -35°C) a 60 % concentration of coolant should be used. To accomplish this, pour 1.6 L (0.4 US gal) of Honda Extreme Cold Weather Antifreeze/Coolant Type 2 into the radiator first, then add Acura Long Life Antifreeze/Coolant Type 2 until the radiator is full. Engine Coolant Capacities (Including the coolant reservoir capacity of 0.7 L (0.18 US gal)) At Coolant Change: 7.0 L (1.85 US gal) After Engine Overhaul: 8.4 L (2.22 US gal)
Loosely install the radiator cap.
Set the heater temperature control to maximum heat.
Start the engine, and let it run until it warms up (the radiator fan comes on at least twice).
Turn off the engine. Check the level in the radiator and add Acura Long Life Antifreeze/Coolant Type 2 if needed. NOTE: Removing the radiator cap while the engine is hot can cause the coolant to spray out. Always let the engine and radiator cool before removing the cap.
Put the radiator cap on securely, then run the engine again and check for leaks.
Clean up any spilled engine coolant.
If the Maintenance Minder™ required engine coolant replacement, reset the Maintenance Minder™ (see «MAINTENANCE MINDER™»(/acura/rdx/i-2009-2012/remont/schedule/#maintenance) ), and this procedure is complete. If the Maintenance Minder™ did not require engine coolant replacement, go to step 15 .
Turn the ignition switch to LOCK (0).
Connect the HDS to the DLC (see «HOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM)»(/acura/rdx/i-2009-2012/remont/testing-diagnostics/#fuel-and-emissions-systems__how-to-use-the-hds-honda) ).
Turn the ignition switch to ON (II).
Make sure the HDS communicates with the vehicle and the PCM. If it does not communicate, troubleshoot the DLC circuit (see «DLC CIRCUIT TROUBLESHOOTING»(/acura/rdx/i-2009-2012/remont/testing-diagnostics/#pgm-fi-system__dlc-circuit-troubleshooting) ).
Select GAUGES in the BODY ELECTRICAL with the HDS.
Select ADJUSTMENT in the GAUGES with the HDS.
Select MAINTENANCE MINDER™ in the ADJUSTMENT with the HDS.
Select RESET in the MAINTENANCE MINDER™ with the HDS.
Select MAINTENANCE SUB ITEM 5 RESET with the HDS.

Scheme 14

Scheme 14: Thermostat Replacement

Drain the engine coolant (see «COOLANT CHECK»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Remove the A/C condenser fan shroud (see «FAN, FAN MOTOR, AND SHROUD REMOVAL AND INSTALLATION»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Disconnect the lower hose (A), and remove the harness clamp (B).
Remove the thermostat assembly (C).
Install the thermostat assembly with a new O-ring (D), then connect the lower radiator hose.
Install the A/C condenser fan shroud (see «INSTALLATION»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Refill the radiator with engine coolant, and bleed the air from the cooling system with the heater valve open (see «COOLANT CHECK»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Clean up any spilled engine coolant.

Scheme 15

Scheme 15: Water Passage Replacement

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Scheme 21

Drain the engine coolant (see «COOLANT CHECK»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Remove the intake manifold (see «REMOVAL»(/acura/rdx/i-2009-2012/remont/mechanical/#intake-manifold-and-exhaust-system) ).
Remove the drive belt auto-tensioner (see «DRIVE BELT AUTO-TENSIONER REMOVAL/INSTALLATION»(/acura/rdx/i-2009-2012/remont/charging-system/#charging-system) ).
Remove the alternator (see «ALTERNATOR REMOVAL AND INSTALLATION»(/acura/rdx/i-2009-2012/remont/charging-system/#charging-system) ).
Remove the A/C condenser fan shroud assembly.
Remove the A/C compressor without disconnecting the A/C hoses (see step 36 under «A/C COMPRESSOR REPLACEMENT»(/acura/rdx/i-2009-2012/remont/automatic-hvac-system/#climate-control__ac-compressor-replacement) ).
Remove the connecting pipe mounting bolts (A), then remove the connecting pipe (B).
Disconnect the lower radiator hose (C) and the water bypass hose (D). Remove the harness clamp (E).
Remove the water passage assembly.
Remove the thermostat housing assembly (A) from the water passage (B).
Remove the water pump (C) from the water passage (see «WATER PUMP REPLACEMENT»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system__water-pump-replacement) ).
Clean and dry the water passage mating surfaces.
Install the water pump (A) to the water passage (B) (see «WATER PUMP REPLACEMENT»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system__water-pump-replacement) ).
Install the thermostat housing assembly (C) with a new O-ring (D) to the water passage.
Apply liquid gasket (P/N 08717-0004, 08718-0003, 08718-0004, or 08718-0009) to the engine block mating surface of the water passage and to the inside edge of the threaded bolt holes. Install the component within 5 minutes of applying the liquid gasket. NOTE: Apply a 3 mm (0.12 in) diameter bead of liquid gasket along the broken line (A). If you apply liquid gasket P/N 08718-0012, the component must be installed within 4 minutes. If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply new liquid gasket.
Install the water passage assembly (A) with a new O-ring (B). NOTE: Wait at least 30 minutes before filling the engine with coolant. Do not run the engine for at least 3 hours after installing the water passage.
Install the connecting pipe (A) with a new O-ring (B), then tighten the bolt (C).
Connect the lower radiator hose (D) and the water bypass hose (E), then install the harness clamp (F).
Tighten the bolt (G) securing the connecting pipe.
Install the A/C compressor (see step 37 under «A/C COMPRESSOR REPLACEMENT»(/acura/rdx/i-2009-2012/remont/automatic-hvac-system/#climate-control__ac-compressor-replacement) ).
Install the A/C condenser fan shroud assembly.
Install the alternator (see «INSTALLATION»(/acura/rdx/i-2009-2012/remont/charging-system/#charging-system) ).
Install the drive belt auto-tensioner (see «DRIVE BELT AUTO-TENSIONER REMOVAL/INSTALLATION»(/acura/rdx/i-2009-2012/remont/charging-system/#charging-system) ).
Install the intake manifold (see «INSTALLATION»(/acura/rdx/i-2009-2012/remont/mechanical/#intake-manifold-and-exhaust-system) ).
Refill the radiator with engine coolant, and bleed the air from the cooling system with the heater valve open (see «COOLANT CHECK»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Clean up any spilled engine coolant.

Scheme 22

Scheme 22: Removal

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Scheme 26

Scheme 27

Drain the engine coolant (see «COOLANT CHECK»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Remove the air cleaner (see «AIR CLEANER REMOVAL/INSTALLATION»(/acura/rdx/i-2009-2012/remont/mechanical/#intake-air-system) ).
Remove the charge air cooler (see «REMOVAL»(/acura/rdx/i-2009-2012/remont/mechanical/#intake-manifold-and-exhaust-system) ).
Remove the air bypass outlet pipe (A).
Remove the ignition coil cover (A) and the fuel feed pipe mounting bolt (B).
Disconnect the engine wire harness connectors, and remove the wire harness clamps from the cylinder head. CMP sensor A (Intake) connector CMP sensor B (Exhaust) connector EVAP canister purge valve connector
Remove the harness holder from the bracket.
Remove the EVAP canister purge valve mounting bracket (A) from the cylinder head.
Remove the harness holder bracket (A).
Disconnect the upper radiator hose (B) and the water bypass hose (C), then remove the upper water outlet (D).
Disconnect the heater hose (A) and the water bypass hoses (B), then remove the lower water outlet (C).

Scheme 28

Scheme 28: Installation

Scheme 29

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Scheme 32

Scheme 33

Install the lower water outlet (A) with a new O-ring (B), then install the water bypass hoses (C) and heater hose (D).
Install the upper water outlet (A) with a new O-ring (B), then connect the upper radiator hose (C) and the water bypass hose (D).
Install the harness holder bracket (E)
Install the EVAP canister purge valve mounting bracket.
Install the harness holder.
Install the engine wire harness connectors and the wire harness clamps to the cylinder head. CMP sensor A (Intake) connector CMP sensor B (Exhaust) connector EVAP canister purge valve connector
Install the ignition coil cover (A) and the fuel feed pipe mounting bolt (B).
Install the air bypass outlet pipe.
Install the charge air cooler (see «INSTALLATION»(/acura/rdx/i-2009-2012/remont/mechanical/#intake-manifold-and-exhaust-system) ).
Install the air cleaner (see «AIR CLEANER REMOVAL/INSTALLATION»(/acura/rdx/i-2009-2012/remont/mechanical/#intake-air-system) ).
Refill the radiator with engine coolant, and bleed the air from the cooling system with the heater valve open (see «COOLANT CHECK»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Clean up any spilled engine coolant.

Scheme 34

Scheme 34: Removal

Scheme 35

Scheme 36

Scheme 37

Scheme 38

Remove the front splash shield (see «FRONT SPLASH SHIELD REPLACEMENT»(/acura/rdx/i-2009-2012/remont/exterior-body-panels/#fenderwell__front-splash-shield-replacement) ).
Disconnect the fan motor connectors (A), and remove the harness clamps (B).
Remove the clip (A), then remove the coolant reservoir (B) from the holder.
Remove the two bolts and the four clips from the front grille base (A), then remove the support rod clamp bracket (B).
Remove the A/C condenser fan shroud assembly (A), then remove the radiator fan shroud assembly (B) from the A/C condenser fan shroud side.
Remove the cooling fans (A) and the fan motors (B).

Scheme 39

Scheme 39: Installation

Scheme 40

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Scheme 43

Install the fan motors (A) and the cooling fans (B).
Install the radiator fan shroud assembly (A), then install the A/C condenser fan shroud assembly (B).
Install the support rod clamp bracket (A), then install the two bolts and the four clips.
Install the coolant reservoir.
Connect the fan motor connectors (A), and install the harness clamps (B).
Install the front splash shield (see «FRONT SPLASH SHIELD REPLACEMENT»(/acura/rdx/i-2009-2012/remont/exterior-body-panels/#fenderwell__front-splash-shield-replacement) ).

Scheme 44

Scheme 44: Radiator Replacement

Scheme 45

Scheme 46

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Scheme 48

Scheme 49

Drain the engine coolant (see «COOLANT CHECK»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Remove the A/C condenser fan shroud assembly and radiator fan shroud assembly (see «FAN, FAN MOTOR, AND SHROUD REMOVAL AND INSTALLATION»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Disconnect the upper radiator hose (A).
Clean any dirt off the quick connector (B), the radiator, and the lower radiator hose.
Pull out the lock (C) by hand, then wiggle the quick connector loose, and remove it from the radiator. Do not use any tools to remove the quick connector.
Disconnect the ATF cooler hoses (D), then plug the hose and the line.
Disconnect the ECT sensor 2 connector (E).
Remove the intake air duct cover (A) and the upper radiator brackets (B).
Pull up the radiator, then remove the radiator cap (A), the ECT sensor 2 (B) (see «ECT SENSOR 2 REPLACEMENT»(/acura/rdx/i-2009-2012/remont/testing-diagnostics/#pgm-fi-system) ), and the drain plug (C).
Reassemble the radiator with the new O-rings (D).
Install the radiator. Make sure the lower cushions (E) are set securely.
Install the upper radiator brackets (A) and the intake air duct cover (B).
Check the quick connector (A) and set ring (B) for cracks or damage. If either the connector or the set ring is cracked or damaged, replace the quick connector as an assembly.
Make sure the set ring is in place inside the quick connector. If the set ring is displaced or not properly seated in the connector, replace the quick connector.
Replace the O-ring (C) in the quick connector.
Check the lock (D). If the lock is damaged or deformed, replace it. When installing the new lock to the connector, slide it straight down along the groove.
Install a new lower radiator hose on the quick connector, and install the clamp.
Clean the connecting surface of the radiator (E), then apply clean engine coolant around the connecting surface.
Push down the lock (A), then push the quick connector (B) onto the radiator until you hear it click.
Connect the upper radiator hose (C) and the ATF cooler hoses (D) (see «ATF COOLER HOSE REPLACEMENT»(/acura/rdx/i-2009-2012/remont/automatic-trans/#automatic-transmission) ).
Connect the ECT sensor 2 connector (E).
Install the A/C condenser fan shroud assembly and the radiator fan shroud assembly (see «INSTALLATION»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Refill the radiator with engine coolant, and bleed the air from the cooling system with the heater valve open (see «COOLANT CHECK»(/acura/rdx/i-2009-2012/remont/cooling-fan/#engine-cooling-system) ).
Clean up any spilled engine coolant.

Engine Cooling System Acura RDX I рестайлинг