Inspection Procedure

PREPARATION: 

1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch ON and push the hand-held tester main switch ON.
3. Select the ACTIVE TEST mode on the hand-held tester.

CHECK: 

Check the operation of the VSV when the VSV is operated by the hand-held tester.

Fig 1: Checking Operation Of VSV For ACIS

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: 

VSV is ON: 

Air from port E flows out through port F. 

VSV is OFF: 

Air from port E flows out through the air filter. 

1. OK: Check for vacuum tank (See  INSPECTION  ). 
2. NG: Go to next step 

1. NG: Replace VSV for ACIS. 
2. OK: Go to next step 

1. Check the wire harness between the VSV for ACIS and connector the ECM connector.
   1. Disconnect the VSV for ACIS connector.
   2. Disconnect the E5 and E7 ECM connector.
   3. Check for resistance between the wire harness side connectors.
      Fig 2: Identifying VSV for ACIS connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard (Check for open): 

   SYMBOLS AND SPECIFIED CONDITION
   
   

   Symbols (Terminal No.)	Specified condition
   VSV for ACIS (V12-2) - ACIS (E5-33)	Below 1 Ω

   Standard (Check for short): 

   SYMBOLS AND SPECIFIED CONDITION
   
   

   Symbols (Terminal No.)	Specified condition
   VSV for ACIS (V12-2) or ACIS (E5-33) - E1 (E7-1)	10 kΩ or higher

2. Check the wire harness between the VSV for ACIS connector and the EFI relay.
   1. Disconnect the VSV for ACIS connector.
   2. Remove the EFI relay from the engine room R/B.
   3. Check for resistance between the wire harness side connectors.
      Fig 3: Identifying E5 And E7 Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard (Check for open): 

1. NG: Repair or replace harness or connector. 
2. OK: Check and replace ECM (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ).