2006 Odyssey Cylinder Head Removal Report a problem with this article NOTE: Use fender covers to avoid damaging painted surfaces. To avoid damaging the wires and terminals, unplug the wiring connectors carefully while holding the connector portion. To avoid damaging the cylinder head, wait until the engine coolant temperature drops below 100 ºF (38 ºC) before loosening the cylinder head bolts. Mark all wiring and hoses to avoid misconnection. Also, be sure that they do not contact other wiring or hoses, or interfere with other parts. 1. Make sure you have the anti-theft codes for the radio and the navigation system, then write down the customer's audio presets. Make sure the ignition switch is OFF. 2. Relieve fuel pressure. 3. Disconnect the negative cable from the battery. 4. Drain the engine coolant. 5. Remove the drive belt. 6. Remove the power steering (P/S) pump (A) and the bolt (B) securing the P/S hose bracket. 7. Remove the alternator. 8. Remove the timing belt. 9. Remove the intake manifold. 10. Remove the six ignition coils. 11. Remove the engine wire harness connectors and wire harness clamps from the cylinder head. Six injector connectors Engine coolant temperature (ECT) sensor 1 connector Engine coolant temperature (ECT) sensor 2 connector Camshaft position (CMP) sensor connector Crankshaft position (CKP) sensor A/B connector Exhaust gas recirculation (EGR) valve connector Rocker arm oil control solenoid (VTEC solenoid valve) connector https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 1/13
Rocker arm oil pressure switch (VTEC oil pressure switch) connector Oil pressure switch connector Two air fuel ratio (A/F) sensor connectors Two secondary heated oxygen sensor (secondary HO2S) connectors 12. Remove the front warm up three way catalytic converter (front WU-TWC) and rear warm up three way catalytic converter (rear WU-TWC). 13. Remove the quick-connect fitting cover (A), then disconnect the fuel feed hose (B). https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 2/13
14. Remove the harness clamp, then remove harness holder stay bolt (A). 15. Remove the harness holder (B) from the stay. https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 3/13
16. Remove the upper radiator hose (A) and lower radiator hose (B). https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 4/13
17. Remove the heater hose (A) and water bypass hose (B). https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 5/13
18. Remove the evaporative emission (EVAP) canister hose joint (A) with bracket. https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 6/13
19. Remove the harness bracket from the front cylinder head. https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 7/13
20. Remove the harness clamp bracket from the rear cylinder head. https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 8/13
21. Remove the fuel rails. https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 9/13
22. Remove the water passage. https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 10/13
23. Remove the front and rear camshaft pulleys (A) and front and rear back covers (B). 24. Remove the cylinder head covers. https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 11/13
25. Remove the cylinder head bolts. To prevent warpage, unscrew the bolts in sequence 1/3 turn at a time; repeat the sequence until all bolts are loosened. 26. Remove the cylinder heads. https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 12/13
https://www.motologic.com/car/0b1b8ae0-3db7-012c-0340-19005f6e69db/article/ecba0420-66e7-012d-26a3-0016cba82182?returnpath=%2fcar%2 13/13