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Coolant Replacement

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  1. Wait until the engine is cool, then carefully remove the radiator cap.
  2. Start the engine. Set the heater temperature control to maximum heat, then turn the ignition switch to LOCK (0). Make sure the engine and the radiator are cool to the touch.
  3. Loosen the drain plug (A), and drain the coolant.
    Fig 1: View Of Loosening Drain Plug
    G06966557Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Install a rubber hose (A) on the drain bolt (B) located at the rear of the engine block, then loosen the drain bolt.
    Fig 2: Rubber Hose On Drain Bolt With Torque Specifications
    G06966558Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. When the coolant stops draining, tighten the drain bolt. Remove the rubber hose.
  6. Tighten the radiator drain plug securely.
  7. Remove, drain, and reinstall the coolant reservoir.
  8. Fill the coolant reservoir to the MAX mark (A) with Honda Long Life Antifreeze/Coolant Type 2.
    Fig 3: Identifying Max Mark On Coolant Reservoir
    G06966559Courtesy of AMERICAN HONDA MOTOR CO., INC.
  9. 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.

    Engine Coolant Refill Capacities (Including the coolant reservoir capacity of 0.85 L (0.225 US gal) 

    At Coolant Change: 7.3 L (1.93 US gal) 

    After Engine Overhaul: 10.0 L (2.64 US gal) 

    Fig 4: View Of Adding Antifreeze/Coolant Into Radiator
    G06966560Courtesy of AMERICAN HONDA MOTOR CO., INC.
  10. Start the engine, and let it run until it warms up (the radiator fan comes on at least twice).
  11. Turn off the engine. Check the level in the radiator, and add the recommended coolant, if needed.
  12. Start the engine. Hold the engine speed at 1, 500 RPM for 5 minutes, then turn off the engine.
  13. Check the level in the radiator, and add the recommended coolant, if needed.
  14. Start the engine. Hold the engine speed at 1, 500 RPM for 3 minutes, then turn off the engine.
  15. Check the level in the radiator, and add the recommended coolant, if needed.
  16. Repeat steps  14 through  15 until the coolant level does not change in the radiator, then install the radiator cap loosely.
  17. Start the engine. Hold the engine speed at 2, 500 RPM for 1 minute, then let it idle.
  18. Select high speed heat mode on the rear control panel. Measure the temperature of the air from the rear floor vent for 3 minutes. Make sure the temperature is above the standard line of the graph as shown. If the temperature is below the standard line, repeat steps  14 through  15 several more times. Then loosely install the radiator cap and recheck.
    Fig 5: Identifying Air Flow Temperature Graph
    G06966561Courtesy of AMERICAN HONDA MOTOR CO., INC.
  19. With the engine idling, make sure you do not hear the sound of water flowing near the rear heater unit. If you hear water flowing, repeat steps  14 through  15 several more times
  20. Install the radiator cap on securely.
  21. Fill the coolant reservoir with the recommended coolant up to the MAX mark, then add an extra 0.4 L (13.0 oz) of coolant.
  22. Clean up any spilled engine coolant.
  23. Inspect for engine coolant leaks.
  24. If the Maintenance Minder required engine coolant replacement, reset the Maintenance Minder; information display (see GENERAL INFORMATION (INFORMATION DISPLAY) ), multi information display (see GENERAL INFORMATION (MULTI-INFORMATION DISPLAY) ), and this procedure is complete. If the Maintenance Minder did not require engine coolant replacement, go to step 25.
  25. Turn the ignition switch to LOCK (0).
  26. Connect the HDS to the DLC (see step 2 on HOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM) ).
  27. Turn the ignition switch to ON (II).
  28. Make sure the HDS communicates with the vehicle and the PCM. If it does not communicate, troubleshoot the DLC circuit (see DLC CIRCUIT TROUBLESHOOTING ).
  29. Select GAUGES in the BODY ELECTRICAL with the HDS.
  30. Select ADJUSTMENT in the GAUGES with the HDS.
  31. Select MAINTENANCE MINDER in the ADJUSTMENT with the HDS.
  32. Select RESET in the MAINTENANCE MINDER with the HDS.
  33. Select MAINTENANCE SUB ITEM 5 RESET with the HDS.
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