Rear A/C Unit: Inspection

WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

Inspect evaporator :
1. Check evaporator fins for blockage.
  If the fins are clogged, clean them with compressed air.
2. Check fitting for cracks or scratches.
  If necessary, repair or replace.
Inspect heater radiator :
Inspect fins for blockage.

If the fins are clogged, clean them with compressed air.
Inspect water valve servomotor circuit .
Inspect air outlet servomotor operation :
1. Connect the positive (+) lead from the battery to terminal 7 and the negative (-) lead to terminal 8. See Fig 1.
2. Connect the negative (-) lead from the battery to each terminal and check that the shaft rotates at each position, as shown in the illustration. See Fig 2.
Fig 1: Identifying Air Outlet Terminal Positions
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Charting Air Outlet Terminal Positions
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002