2003 Ford Focus Drive belt Routing Diagram?

The details are as follows.Serpentine belt also known as drive belt or Accessory belt.
Belts are made of reinforced synthetic and/or hard rubber, belts are usually v-channeled or ribbed serpentine They're used to drive accessories including the alternator, water pump, AC compressor, power steering, air pump, vacuum pump and injector pump. They're usually driven by the engine's crankshaft pulley and are fully adjustable by tensioners or idlers that follow or track the surface of the belt.
The diagrams are for both,with and without AC models.The belt tension should be absolutely right.Not too loose or over tight.Adjust the belt tensioner correctly.Also inspect that all pulleys from where belt routes ,are proper and not worn out.

The belt route diagrams for all engines with its engine model is as follows :-----

choose the correct one for your application:

Adjustment

Belt tension is automatically maintained by a spring-loaded tensioner. No adjustment is necessary.

Fig. Accessory drive belt routing-2.0L (VIN P) 2.0L (VIN P) engine with A/C.

Fig. Accessory drive belt routing-2.0L (VIN P) 2.0L (VIN P) engine without A/C

Fig. Accessory drive belt routing-2.0L (VIN 3) 2.0L (VIN 3) engine

Fig. Accessory drive belt routing-2.0L (VIN N) and 2.3L (VIN Z) engine 

Removal & Installation

2.0L (VIN N) & 2.3L (VIN Z) Engine

1. Before servicing the vehicle, refer to the Precautions section.
2. With the vehicle in NEUTRAL, position it on a hoist.
3. Remove the splash shield
4. Rotate the accessory drive belt tensioner.
5. Remove the accessory drive belt.
   

Fig. Location of splash shield and removal. To install: 
1. Rotate the accessory drive belt tensioner.
2. Route the drive belt.
3. Slowly release the tensioner
4. Reinstall the splash shield.
2.0L (VIN P) Engine
1. Before servicing the vehicle, refer to the Precautions section.
2. Disconnect battery negative cable from battery and properly isolate to prevent accidental reconnection.
3. Raise the vehicle with the transaxle in NEUTRAL
4. Remove the splash shield
5. Lower the vehicle.
6. Rotate the accessory drive belt tensioner using a 3/8-inch drive breaker bar.
7. Remove the accessory drive belt. 

Fig. Drive belt tensioner-VIN P engine. . To install: 
1. Rotate the accessory drive belt tensioner with a 3/8-inch drive breaker bar.
2. Route the drive belt.
3. Slowly release the tensioner
4. Raise the vehicle with the transaxle in NEUTRAL.
5. Reinstall the splash shield.
6. Lower the vehicle.
7. Reconnect the negative battery cable.
2.0L And 2.3L Engine (VIN 3, VIN 5 And VIN Z)
1. Before servicing the vehicle, refer to the Precautions section.
2. Disconnect battery negative cable from battery and properly isolate to prevent accidental reconnection.
3. Raise the vehicle with the transaxle in NEUTRAL
4. Remove the splash shield
5. Rotate the accessory drive belt tensioner. Remove the accessory drive belt.
   
   Fig. Location of splash shield and removal.
   
   
   
   Fig. Rotating belt tensioner.
   To install: 
1. Rotate the accessory drive belt tensioner.
2. Route the drive belt.
3. Slowly release the tensioner
4. Reinstall the splash shield.
5. Reconnect the negative battery cable.
6. -------------

This detailed diagrams will help you.
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If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

Timing belt routing diagrams for cars and trucks? Click the link below:---http://technoanswers.blogspot.com/2011/10/timing-belt-routing-diagrams-for-cars.html

Drive belt routing diagrams for cars and trucks? Click this link below:---http://technoanswers.blogspot.com/2011/10/drive-belt-routing-diagrams-for-cars.html
 

How to route the serpentine belt?

http://carbeltrouting.blogspot.com/2011/12/how-to-route-serpentine-belt.html

Drive belt came off while driving?

http://carbeltrouting.blogspot.com/2011/12/drivebelt-came-off-while-driving.html