Air Pump: Inspection

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT AIR PUMP
1. Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead to terminal 2, and check that air flows.
  If operation is not as specified, replace the air pump.
  
  Fig 1: Inspecting Air Pump
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT AIR SWITCHING VALVE
1. Blow air into port A and check that air is not discharged from port B.
  
  Fig 2: Inspecting Air Switching Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply battery voltage across the terminals.
3. Blow air into port A and check that air is discharged from port B.
  If operation is not as specified, replace the air switching valve.
  
  Fig 3: Applying Battery Voltage Across Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT NO. 2 AIR SWITCHING VALVE
1. Blow air into port B and check that air is not discharged from port C.
  
  Fig 4: Inspecting No. 2 Air Switching Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply vacuum of 30 kPa (306 gf/cm² , 4.35 psi) to port A, blow air into port B and check that air is discharged from port C.
  If operation is not as specified, replace the No. 2 air switching valve.
  
  Fig 5: Applying Vacuum To Port A
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002