Inspection Procedure

PERFORM ACTIVE TEST USING HAND-HELD TESTER (OPERATE VSV FOR ACIS)
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.
4. Check the operation of the VSV when the VSV is operated by the hand-held tester.
  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.
  
  Fig 1: Performing Active Test Using Hand-Held Tester (Operate VSV For ACIS)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: CHECK VACUUM TANK

NG: Go to next step.
CHECK VSV FOR ACIS (OPERATION) (See INSPECTION )
NG: REPLACE VSV FOR ACIS

OK: Go to next step.

CHECK HARNESS AND CONNECTOR (EFI RELAY - ECM)

Check the wire harness between the VSV for ACIS and connector the ECM connector.

Check for resistance between the wire harness side connectors.

Fig 2: Identifying VSV For ACIS Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard (Check for open):

VSV FOR ACIS AND CONNECTOR ECM CONNECTOR (CHECK FOR OPEN)

Symbols (Terminal No.)	Specified condition
VSV for ACIS (V9-2) - ACIS (E5-33)	Below 1 Ω

Standard (Check for short):

VSV FOR ACIS AND CONNECTOR ECM CONNECTOR (CHECK FOR SHORT)

Symbols (Terminal No.)	Specified condition
VSV for ACIS (V9-2) or ACIS (E5-33) - E1 (E7-1)	10 kΩ or higher

Fig 3: Checking Harness And connector (EFI Relay - ECM)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the wire harness between the VSV for ACIS connector and the EFI relay.

Check for resistance between the wire harness side connectors.

Standard (Check for open):

VSV FOR ACIS CONNECTOR AND EFI RELAY

Symbols (Terminal No.)	Specified condition
VSV for ACIS (V9-1) - EFI relay terminal 3 of R/B	Below 1 Ω

Fig 4: Identifying EFI Relay

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE ECM (See REPLACEMENT )