The 2010 Honda Odyssey utilizes two distinct belt systems: a serpentine drive belt (accessory belt) and an internal timing belt.
Serpentine Drive Belt (Accessory Drive Belt)
This single, multi-ribbed belt powers essential engine accessories. The routing typically follows the pattern below, though minor variations exist based on exact engine (J35A8) and accessory configuration:
- Crankshaft Pulley (Center Bottom): Drives the entire system.
- Automatic Tensioner: Maintains constant belt tension.
- Power Steering Pump Pulley (Typically Top Left): Powers the hydraulic steering system.
- Alternator Pulley (Typically Top Center/Right): Charges the battery and powers electrical systems.
- Air Conditioning Compressor Pulley (Typically Bottom Right): Drives the A/C system.
- Idler Pulley(s): Guide(s) the belt path and maintain tension (number/location vary).
Location: Easily visible on the front of the engine. The routing diagram is often printed on a label affixed to the radiator core support or strut tower. Replace with 6PK2310 (or equivalent length/belt type) when worn.
Check Condition: Inspect for cracks, glazing, fraying, or missing ribs.
Timing Belt (Cambelt)
Critical Internal Component: Located behind timing covers on the engine's side/front. It synchronizes crankshaft and camshaft rotation.
- Interference Engine Design: Failure causes catastrophic piston-to-valve collision.
- Not Visible: Requires removing covers for inspection/replacement.
- Replacement Interval: Honda specifies replacement every 105,000 miles or 7 years. Strictly adhere to this.
Components Covered: The timing belt connects the crankshaft sprocket to the camshaft sprocket(s), driving the camshafts. The tensioner and idler pulleys are critical parts of this system.
Important: Timing belt replacement is complex and requires specialized tools. Professional installation is highly recommended. The diagram is service manual specific.
Key Considerations
Always reference the vehicle's underhood belt routing diagram label first.
Replacement belts must match original specifications exactly.
When replacing the timing belt, always replace the tensioner, idler pulley(s), and often the water pump simultaneously.