Inspection Procedure

HINT:

To check the pressure condition in the secondary air passage, the hand held tester is available.

1. Connect the hand held tester to the DLC3 on the vehicle.
2. Turn the ignition switch ON and push the hand held tester main switch ON.
3. Start the engine.
4. Select the item "DIAGNOSIS/ENHANCED OBD II/ACTIVE TEST/SECOND AIR VSV/ALL or USER DATA" (press the right or left button).
   NOTE: When selecting USER DATA, select "SECONDARY AIR" and "SECOND AIR VSV" on the screen by pressing the "YES" button on the tester.

   HINT:

   When operating the VSV in the secondary air system, the air pump is also operated at the same time.

5. Check that the SECONDARY AIR, SECOND AIR VSV and 2ND AIR PRESS on the hand held tester indicate the same conditions as the chart below.
   NOTE: This test allows the technician to operate the VSV for only 5 seconds. If you perform the test again, more than 30 seconds interval must be required after the previous test is done.
   Fig 1: Tester Operation Specified Condition Table

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. CHECK HARNESS AND CONNECTOR (PRESSURE SENSOR - ECM) 
   1. Disconnect the M5 pressure sensor connector.
   2. Disconnect the E3 ECM connector.
   3. Check the resistance between the wire harness side connectors.

      Standard (Check for open): 

      Fig 2: Identifying Pressure Sensor Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 3: Tester Connection Specified Condition Table (For Open)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard (Check for short): 

      Fig 4: Tester Connection Specified Condition Table (For Short)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Reconnect the pressure sensor connector.
   5. Reconnect the ECM connector.
      Fig 5: Disconnecting E3 ECM Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
   2. OK: Go to next step. 
2. INSPECT ECM (AIP VOLTAGE) 
   1. Connect the pressure gauge to the pressure sensor as shown in the illustration.
   2. Connect the hand held tester to the DLC3 on the vehicle.
   3. Turn the ignition switch ON and push the hand held tester main switch ON (Do not start engine).
   4. Select the item "DIAGNOSIS/ENHANCED OBD II/DATA LIST/2ND AIR PRESS."
   5. Check that the pressure displayed on the hand held tester fluctuates when applying the pressure to the pressure sensor with the pressure gauge.
      Fig 6: Connecting Pressure Gauge To Pressure Sensor

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPLACE PRESSURE SENSOR (TURBO PRESSURE SENSOR) (See  PRESSURE SENSOR (TURBO PRESSURE SENSOR)  ) 
   2. OK: REPLACE ECM (See  REPLACEMENT  )