A vacuum pump is used on all diesel models.
The pump is located on the passenger side of the engine just below the alternator (Figure 2-51).
This supplies vacuum for wastegate actuator operation on turbo models and for A/C and heater operation on diesel models. The pump is belt driven and has a removable pulley.
The pump is tested with a standard vacuum gauge. Output should be a minimum of 20-21 inches vacuum.
Pump removal only requires loosening the serpentine belt, disconnecting the vacuum output hose, and removing the pump attaching bolts.
