Engine Cooling System (4-CYL) Honda Crosstour I

Scheme 39

Scheme 40

1. 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).
2. Apply a pressure of 93-123 kPa (0.95-1.25 kgf/cm 2 , 13.5-17.8 psi).
3. Check for a drop in pressure.
4. If the pressure drops, replace the radiator cap.

Scheme 41

1. Wait until the engine is cool, then carefully remove the radiator cap and fill the radiator with engine coolant to the base of the filler neck.
2. 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).
3. Inspect for engine coolant leaks and a drop in pressure.
4. Remove the tester, then reinstall the radiator cap.

Scheme 42

1. Disconnect the 2P connectors from the radiator fan motor (A) and the A/C condenser fan motor (B).
2. Test the motor by connecting battery power to terminal No. 1 and ground to terminal No. 2.
3. If the motor fails to run or does not run smoothly, replace it (see «CONNECTING PIPE REPLACEMENT»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).

Thermostat Test

Replace the thermostat if it is stuck in the open position at room temperature.

To test a closed thermostat

Scheme 43

1. Suspend the thermostat (A) in a container of water. Do not let the thermostat and the thermometer (B) touch the bottom of the hot container.
2. Heat the water, and check the temperature with a thermometer. Check the temperature at which the thermostat first opens, and at which it is fully open.
3. Measure the lift height of the thermostat when it is fully open.

Standard Thermostat

Lift Height: Above 8.0 mm (0.315 in)

Starts Opening: 169-176 °F (76-80 °C)

Fully Open: 194°F(90°C)

Scheme 44

1. Remove the drive belt (see «DRIVE BELT INSPECTION»(ref-512905-S20602512182012110400000) ).
2. Turn the water pump pulley counterclockwise, and check that it turns freely and smoothly. If it does not turn smoothly, replace the water pump (see «WATER PUMP REPLACEMENT»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ). NOTE: When you check the water pump, you may see a small amount of "weeping" from the bleed holes (A). This is normal.
3. Install the drive belt (see «DRIVE BELT INSPECTION»(ref-512905-S20602512182012110400000) ).

Scheme 45

1. Remove the drive belt (see «DRIVE BELT INSPECTION»(ref-512905-S20602512182012110400000) ).
2. Drain the engine coolant (see «COOLANT CHECK»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
3. Remove the tensioner pulley (see «TENSIONER PULLEY REPLACEMENT»(ref-512905-S10218254512012110400000) ).
4. Remove the six bolts securing the water pump (A), then remove the water pump.
5. Inspect and clean the mating surface of the water passage.
6. Install the water pump with a new O-ring (B) and the water pump pulley.
7. Clean up any spilled engine coolant.
8. Install the tensioner pulley (see «TENSIONER PULLEY REPLACEMENT»(ref-512905-S10218254512012110400000) ).
9. Install the drive belt (see «DRIVE BELT INSPECTION»(ref-512905-S20602512182012110400000) ).
10. Refill the radiator with engine coolant, and bleed the air from the cooling system (see «COOLANT CHECK»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).

Scheme 46

1. Check the coolant level in the coolant reservoir. Make sure it is between the MAX mark (A) and the MIN mark(B).
2. 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 marks, then inspect the cooling system for leaks.
3. Check the coolant level in the radiator, and add Honda Long Life Antifreeze/Coolant Type 2 into the radiator up to the base of the filler neck, if needed. NOTE: Always use Honda Long Life Antifreeze/Coolant Type 2. Using a non-Honda coolant can result in corrosion, causing the cooling system to malfunction or fail. Honda Long Life Antifreeze/Coolant Type 2 is a mixture of 50 % antifreeze and 50 % water. Do not add water.

Scheme 47

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Scheme 49

1. Wait until the engine is cool, then carefully remove the radiator cap.
2. Loosen the drain plug (A), and drain the coolant.
3. After the coolant has drained, tighten the radiator drain plug securely.
4. Remove, drain, and reinstall the coolant reservoir.
5. Fill the coolant reservoir to the MAX mark (A) with Honda Long Life Antifreeze/Coolant Type 2.
6. Pour Honda Long Life Antifreeze/Coolant Type 2 into the radiator up to the base of the filler neck. NOTE: Always use Honda Long Life Antifreeze/Coolant Type 2. Using a non-Honda coolant can result in corrosion, causing the cooling system to malfunction or fail. Honda 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 1.5 L (0.4 US gal) of Honda Extreme Cold Weather Antifreeze/Coolant Type 2 into the radiator first, then add Honda Long Life Antifreeze/Coolant Type 2 until the radiator is full. Engine Coolant Refill Capacities (Including the coolant reservoir capacity of 0.68 L (0.180 US gal)) At Coolant Change: 6.3 L (1.66 US gal) After Engine Overhaul: 7.5 L (1.98 US gal)
7. Loosely install the radiator cap.
8. Start the engine, and let it run until it warms up (the radiator fan comes on at least twice).
9. Turn off the engine. Check the level in the radiator, and add Honda Long Life Antifreeze/Coolant Type 2, if needed.
10. Put the radiator cap securely, then start the engine again, and check for leaks.
11. Clean up any spilled engine coolant.
12. If the Maintenance Minder required replacing the engine coolant, reset the Maintenance Minder (see «RESETTING THE MAINTENANCE MINDER»(ref-512891-S11746490662012110400000) ), and this procedure is complete. If the Maintenance Minder did not require engine coolant replacement, go to step 13.
13. Turn the ignition switch to LOCK (0).
14. Connect the HDS to the DLC (see step 2 on «HOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM)»(ref-512892-S33715790482012110400000) ).
15. Turn the ignition switch to ON (II).
16. Make sure the HDS communicates with the vehicle and the PCM. If it does not communicate, troubleshoot the DLC circuit (see «DLC CIRCUIT TROUBLESHOOTING»(ref-512893-S17266721462012110400000) ).
17. Select GAUGES in the BODY ELECTRICAL with the HDS.
18. Select ADJUSTMENT in the GAUGES with the HDS.
19. Select MAINTENANCE MINDER in the ADJUSTMENT with the HDS.
20. Select RESET in the MAINTENANCE MINDER with the HDS.
21. Select MAINTENANCE SUB ITEM 5 RESET with the HDS.

Scheme 50

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Scheme 53

1. Drain the engine coolant (see «COOLANT CHECK»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
2. Clean any dirt off the quick connector (A), the thermostat cover, and the lower radiator hose.
3. Pull out the lock (B) by hand, then wiggle the quick connector loose, and remove it from the thermostat cover. Do not use any tools to remove the quick connector.
4. Remove the thermostat assembly (A).
5. Install a new thermostat with a new O-ring (B).
6. Check the quick connector (A) and the set ring (B) for cracks or damage. If the quick connector and/or the set ring are cracked or damaged, replace the connector.
7. Make sure the set ring is in place inside the quick connector. If the set ring is off the connector, replace the quick connector.
8. Replace a new O-ring (C) in the quick connector.
9. Check the lock (D). If the lock is damaged or deformed, replace it. When installing the new lock to the quick connector, push it straight down along the groove.
10. Clean the connecting surface of the thermostat cover (E), then apply clean engine coolant around the connecting surface.
11. Push the lock (A) down, then push the quick connector (B) onto the thermostat cover until you hear it click.
12. Refill the radiator with engine coolant, and bleed the air from the cooling system (see «COOLANT CHECK»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
13. Clean up any spilled engine coolant.

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Scheme 62

1. Drain the engine coolant (see «COOLANT CHECK»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
2. Remove the engine under cover (see step 28 on «ENGINE REMOVAL»(ref-512923-S01545967872012110400000) ).
3. Clean any dirt off the quick connector (A), the thermostat cover, and the lower radiator hose.
4. Pull out the lock (B) by hand, then wiggle the quick connector loose, and remove it from the thermostat cover. Do not use any tools to remove the quick connector.
5. Remove the A/C compressor without disconnecting the A/C hoses. Take care not to bend the hose excessively (see step 48 on «ENGINE REMOVAL»(ref-512923-S01545967872012110400000) ).
6. Remove the alternator (see «TENSIONER PULLEY REPLACEMENT»(ref-512905-S10218254512012110400000) ).
7. Remove the drive belt auto-tensioner (see «DRIVE BELT AUTO-TENSIONER REMOVAL/INSTALLATION»(ref-512905-S00406571042012110400000) ).
8. Remove the intake manifold (see «REMOVAL»(/honda/crosstour/i-2009-2012/remont/mechanical/#intake-manifold-and-exhaust-system-4-cyl) ).
9. Remove the connecting pipe mounting bolts (A) securing the connecting pipe (B).
10. Remove the connecting pipe and disconnect the water bypass hose (C) and the PCV hose (D).
11. Remove the water passage (A).
12. Remove the thermostat housing (B).
13. Remove the water pump (see «WATER PUMP REPLACEMENT»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
14. Install the water pump (see «WATER PUMP REPLACEMENT»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
15. Install the thermostat housing (A) with a new O-ring (B).
16. Clean and dry the water passage mating surfaces.
17. Apply liquid gasket (P/N 08717-0004, 08718-0003, 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 2.5 mm (0.098 in) diameter bead of liquid gasket along the broken line (A). If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply new liquid gasket.
18. Install the water passage (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.
19. Connect the water bypass hose (A) and the PCV hose (B).
20. Install the connecting pipe (C) with a new O-ring (D), then tighten the connecting pipe mounting bolts (E) securing the connecting pipe.
21. Install the intake manifold (see «INSTALLATION»(/honda/crosstour/i-2009-2012/remont/mechanical/#intake-manifold-and-exhaust-system-4-cyl) ).
22. Install the drive belt auto-tensioner (see «DRIVE BELT AUTO-TENSIONER REMOVAL/INSTALLATION»(ref-512905-S00406571042012110400000) ).
23. Install the alternator (see «INSTALLATION»(ref-512905-S39352057362012110400000) ).
24. Install the A/C compressor (see step 28 on «ENGINE INSTALLATION»(ref-512923-S10416235272012110400000) ).
25. Install the engine under cover (see step 34 on «ENGINE INSTALLATION»(ref-512923-S10416235272012110400000) ).
26. Check the quick connector (A) and the set ring (B) for cracks or damage. If the connector and/or the set ring are cracked or damaged, replace the quick connector.
27. Make sure the set ring is in place inside the quick connector. If the set ring is off the connector, replace the quick connector.
28. Replace the O-ring (C) in the quick connector.
29. Check the lock (D). If the lock is damaged or deformed, replace it. When installing the new lock on the quick connector, push it straight down along the groove.
30. Clean the connecting surface of the thermostat cover (E), then apply clean engine coolant around the connecting surface.
31. Push the lock (A) down, then push the quick connector (B) onto the thermostat cover until you hear it click.
32. Refill the radiator with engine coolant, and bleed the air from the cooling system (see «COOLANT CHECK»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
33. Clean up any spilled engine coolant.

Scheme 63

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Scheme 66

1. Drain the engine coolant (see «COOLANT CHECK»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
2. Disconnect the breather pipe (A), then remove the intake air duct (B).
3. Disconnect the upper radiator hose (A), the heater hose (B), and the water bypass hose (C).
4. Disconnect the water bypass hose (D).
5. Remove the intake manifold (see «REMOVAL»(/honda/crosstour/i-2009-2012/remont/mechanical/#intake-manifold-and-exhaust-system-4-cyl) ).
6. Remove the connecting pipe mounting bolts (A), then remove the connecting pipe (B).
7. Disconnect the ECT sensor 1 connector (A), then remove the water outlet (B).
8. Install the water outlet with a new O-ring (C).
9. Install the other parts in the reverse order of removal.
10. Refill the radiator with engine coolant, and bleed the air from the cooling system (see «COOLANT CHECK»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
11. Clean up any spilled engine coolant.

Scheme 67

Scheme 68

1. Drain the engine coolant (see «COOLANT CHECK»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
2. Remove the intake manifold (see «REMOVAL»(/honda/crosstour/i-2009-2012/remont/mechanical/#intake-manifold-and-exhaust-system-4-cyl) ).
3. Remove the upper radiator hose (A), the heater hoses (B), and the water bypass hose (C).
4. Disconnect the water bypass hose (D).
5. Remove the connecting pipe mounting bolts (A).
6. Disconnect the water bypass hoses (B).
7. Remove the connecting pipe (C).
8. Install the connecting pipe with a new O-ring (D).
9. Refill the radiator with engine coolant, and bleed the air from the cooling system (see «COOLANT CHECK»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
10. Clean up any spilled engine coolant.

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1. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(ref-512910-S20680339942012110400000) ).
2. Remove the harness clamps, then remove the battery base (see step 10 on «ENGINE REMOVAL»(ref-512923-S01545967872012110400000) ).
3. Remove the front grille cover (see «FRONT GRILLE COVER REPLACEMENT»(ref-512926-S12405382742012110400000) ).
4. Remove the water separator (A) and the intake air duct (B).
5. Remove the coolant reservoir.
6. Disconnect the fan motor connectors (A), then remove the harness clamp (B).
7. Remove the A/C condenser fan shroud assembly (A), then remove the radiator fan shroud assembly (B). NOTE: Pull-up the radiator, then move the radiator fan shroud assembly toward the right side of the vehicle to allow for enough space to lift it up and away from the A/C condenser fan shroud assembly.
8. Disassemble the fan shrouds.

Scheme 74

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Scheme 78

1. Reassemble the fan shrouds.
2. Install the radiator fan shroud assembly (A), then install the A/C condenser fan shroud assembly (B).
3. Connect the fan motor connectors (A), then install the harness clamp (B).
4. Install the coolant reservoir.
5. Install the water separator (A) and the intake air duct (B).
6. Install the front grille cover (see «FRONT GRILLE COVER REPLACEMENT»(ref-512926-S12405382742012110400000) ).
7. Install the battery base, then install the harness clamps (see step 51 on «ENGINE INSTALLATION»(ref-512923-S10416235272012110400000) ).
8. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(ref-512910-S20680339942012110400000) ).

Scheme 79

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1. Do the battery removal procedure (see «BATTERY REMOVAL AND INSTALLATION»(ref-512910-S20680339942012110400000) ).
2. Remove the harness clamps, then remove the battery base (see step 10 on «ENGINE REMOVAL»(ref-512923-S01545967872012110400000) )
3. Remove the front grille cover (see «FRONT GRILLE COVER REPLACEMENT»(ref-512926-S12405382742012110400000) ).
4. Remove the water separator (A) and the intake air duct (B).
5. Drain the engine coolant (see «COOLANT CHECK»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
6. Remove the engine under cover (see step 28 on «ENGINE REMOVAL»(ref-512923-S01545967872012110400000) ).
7. Disconnect the lower radiator hose (A) from the radiator.
8. Disconnect the fan motor connectors (A) and the ECT sensor 2 connector (B), then remove the harness clamps (C).
9. Disconnect the upper radiator hose (A) and remove the upper brackets (B) and the coolant reservoir (C).
10. Remove the radiator.
11. Remove the fan shroud assemblies from the radiator.
12. Install the radiator in the reverse order of removal. Make sure the upper and lower cushions (4) are set securely.
13. Do the battery installation procedure (see «BATTERY REMOVAL AND INSTALLATION»(ref-512910-S20680339942012110400000) ).
14. Fill the radiator with engine coolant, and bleed the air from the cooling system (see «COOLANT CHECK»(/honda/crosstour/i-2009-2012/remont/cooling-fan/#engine-cooling-system-4-cyl) ).
15. Clean up any spilled engine coolant.

See also:
• REMOVAL
• CONNECTING PIPE REPLACEMENT