Inspection Procedure

HINT:

In case of using the hand-held tester, start the inspection step  1 and in case of not using the hand-held tester, start from step  2.

1. READ VALUE OF HAND-HELD TESTER 
   1. Connect the hand-held tester to the DLC3.
   2. Check the compressor using DATA LIST.
   1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  
   2. NG: GO TO NEXT STEP 
2. INSPECT MAGNET-CLUTCH RELAY 
   1. Remove the magnet clutch relay from engine room R/B.
   2. Check the continuity between each pair of terminal of magnet clutch relay as shown in MAGNET CLUTCH RELAY  .

      Standard: 

      MAGNET CLUTCH RELAY
      
      

      Terminal No.	Specified condition
      3 - 5	No continuity
      3 - 5	Less than 1 Ω (When battery voltage is applied to terminals 1 and 2)
      1 - 2	Continuity

      Fig 1: Inspecting Magnet-Clutch Relay

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPLACE MAGNET-CLUTCH RELAY 
   2. OK: GO TO NEXT STEP 
3. INSPECT COOLER COMPRESSOR ASSY 
   1. Disconnect the connector from the magnet clutch assy.
   2. Connect the positive (+) lead to terminal 1 and negative (-) lead to terminal body ground, then check that the magnetic clutch assy is engaged.
   Fig 2: Inspecting Cooler Compressor Assy

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPAIR OR REPLACE COOLER COMPRESSOR ASSY 
   2. OK: GO TO NEXT STEP. 
4. CHECK HARNESS AND CONNECTOR (ACMG - BODY GROUND) 
   Fig 3: Checking Harness & Connector (ACMG - Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Check for an open or short circuit in harness and connector between terminal ACMG of ECM and body ground (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
   1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
   2. OK: REPLACE ECM