INSTALLATION INSTRUCTIONS Accessory Application Publications No. ENGINE BLOCK P/N 08T44-SNA-100 2007 MDX BII 32728 Issue Date OCT 2006 PARTS LIST Engine block heater Aluminum washer Heater harness Protective cap 12 Black wire ties 3 Wire ties with clips (Not used) 5 Yellow wire ties NOTE: Always use Honda Antifreeze/Coolant. Using a non-honda coolant can result in corrosion, causing the cooling system to malfunction or fail. To avoid burning out the element, do not operate the engine block heater before it is installed in the vehicle and before you add coolant. INSTALLATION Customer Information: The information in this installation instruction is intended for use only by skilled technicians who have the proper tools, equipment, and training to correctly and safely add equipment to your vehicle. These procedures should not be attempted by do-it-yourselfers. 1. Allow the engine and all cooling system components to cool down. 2. Place a clean drain pan under the radiator drain plug, then loosen the drain plug from the bottom of the radiator to drain the coolant. Remove the cover and the radiator cap to increase the flow. NOTICE Radiator coolant will damage paint. Quickly rinse any spilled coolant from painted surfaces. TOOLS AND SUPPLIES REQUIRED Drain pan Ratchet 10 mm, 19 mm and 24 mm Sockets Torque wrench Tape measure White marker Gloves Eye protection (safety goggles, face shield, etc.) Pushpin Drill 3 mm and 5 mm Drill bits File Masking tape Fender cover Coolant (Honda All Season Antifreeze/Coolant only) DRAIN PLUG RADIATOR CAP 6404010H 2006 American Honda Motor Co., Inc. - All Rights Reserved. BII 32728 (0610) 08T44-STX-2000-91 1 of 5
3. Remove the bulkhead cover (eight clips). 5. Remove the engine cover (two turn clips). CLIPS (8) TURN CLIPS (2) ENGINE BULKHEAD 6807010H 4. Remove the grille (two washer-bolts, four long clips and two short clips). 6131011H 6. Using a tape measure, measure and mark the heater harness at the A,B, C and D points shown. 310 mm WASHER- BOLTS (2) GRILLE SHORT CLIPS (2) 190 mm 540 mm A WHITE MARKER B C D 110 mm 6404030H LONG CLIPS (4) 6404021H 2 of 5 BII 32728 (0610) 2006 American Honda Motor Co., Inc. - All Rights Reserved.
7. From the top, locate and remove the engine block drain bolt and washer. Coolant remaining in the engine jackets may flow out of the bolt hole when the bolt is removed. NOTE: Retain the bolt in case the block heater is removed. (A new washer should be used.) 8. Install the new aluminium washer and the engine block heater into the bolt hole using a 24 mm socket and a torque wrench. Torque the engine block heater to 60 N m (44 lb-ft). WASHER DRAIN BOLT (Retain.) Use a 19 mm socket. ENGINE BLOCK 60 N m (44 lb-ft) Use a 24 mm socket. ALUMINUM WASHER (NEW) 6405030H 9. Route the heater harness down to the engine block heater. Connect the heater harness connector to the engine block heater. 6404041H WITH CLIP (Marked point B) YELLOW YELLOW (Marked point A) ENGINE BLOCK 6405040H 2006 American Honda Motor Co., Inc. - All Rights Reserved. BII 32728 (0610) 3 of 5
10. Secure the heater harness to the vehicle connector with one yellow wire tie at the marked point A. Secure the heater harness to the vehicle harness with one yellow wire tie at the marked point B. 11. Secure the heater harness to the radiator fan shroud with one yellow wire tie at the marked point C. 12. Route the heater harness to the left side of the radiator fan along the vehicle harness. YELLOW (Marked point C) RADIATOR FAN SHROUD RADIATOR FAN 6405061H 13. Route the heater harness along the vehicle harness and out the gap in the bulkhead frame as shown. 6405051H BULKHEAD FRAME 6405071H 4 of 5 BII 32728 (0610) 2006 American Honda Motor Co., Inc. - All Rights Reserved.
14. Secure the heater harness to the vehicle harness using one black wire tie. 16. Secure the heater harness to the vehicle harness using four black wire ties. BLACK BLACK WIRE TIES (4) 15. Using a black wire tie, secure the heater harness to the front grill as shown. Then attach the protective cap to the grille in the location shown, and install the heater harness connector into the protective cap. 6406011H 17. Reinstall all removed parts. Check that all clips and fasteners are installed securely. 18. Reinstall the radiator drain plug. 19. Fill the system with the recommended coolant. Follow the instructions described in the service manual to fill and bleed the cooling system. 20. Check the coolant reservoir for correct level and check the cooling system for signs of leakage. Repair as necessary. 21. Check that the heater harness is routed properly and all connectors are plugged in. 22. Put the drain bolt (removed in step 9) in the glove box. GRILLE 2006 American Honda Motor Co., Inc. - All Rights Reserved. BII 32728 (0610) 5 of 5