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Home >> Toyota >> 2006 >> Corolla CE, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Control System (SFI) (2ZZ-GE) - Diagnostics) >> DTC P2440, P2441: Secondary Air Injection System Switching Valve Stuck Open/Closed Bank 1 >> Inspection Procedure >> OBD II scan tool (excluding the hand-held tester):

OBD II scan tool (excluding the hand-held tester):

WARNING: This page is about a different variant/trim than selected.
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2440 AND/OR P2441) 
    1. Connect an OBD II scan tool to the DLC3.
    2. Turn the ignition switch to ON and turn the scan tool ON.
    3. Read DTCs using the scan tool.

      Result: 

      DTC OUTPUT RESULT

      Display (DTC output) Proceed To
      P2440 and/or P2441 A
      P2440 and/or P2441, and other DTCs B

      HINT:

      If any DTCs other than P2440 and/or P2441 are output, troubleshoot those DTCs first.

    1. B: GO TO  DIAGNOSTIC TROUBLE CODE CHART  
    2. A: GO TO NEXT STEP 
  2. CHECK STORED DTCS 
    1. Connect the OBD II scan tool to the DLC3.
    2. Turn the ignition switch to ON and turn the scan tool ON.
    3. Read DTC using the scan tool.
      DTC OUTPUT RESULT

      Display (DTC Output) Proceed To
      P2440 A
      P2441 B
    1. a: Go to step   4 
    2. B: GO TO NEXT STEP 
  3. CHECK AIR INJECTION SYSTEM NO.1 HOSE 
    1. Check that air injection hose No.1 is securely connected to both the exhaust manifold and air switching valve.
    2. Inspect air injection hose No.1 for blockages and damage.
    1. NG: REPAIR OR REPLACE AIR INJECTION SYSTEM NO.1 HOSE 
    2. OK: GO TO NEXT STEP 
  4. INSPECT VACUUM HOSE AND CHECK VALVE 
    1. Check the connections of the vacuum hoses between each of the following:
      1. The pressure sensor and the air switching valve.
      2. The air switching valve and the Vacuum Switching Valve (VSV).
      3. The VSV and the intake manifold.
    2. Inspect each vacuum hose for blockages and damage.
    3. Check that the check valve is correctly installed.
    4. Check that air flows though the check valve from the VSV to the engine, but not in the opposite direction.
      Fig 1: Inspecting Vacuum Hose And Check Valve
      G02599427Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE VACUUM HOSE AND CHECK VALVE 
    2. OK: GO TO NEXT STEP 
  5. INSPECT AIR SWITCHING VALVE ASSY (See  INSPECTION  ) 
    1. NG: REPLACE AIR SWITCHING VALVE ASSY 
    2. OK: GO TO NEXT STEP 
  6. INSPECT VACUUM SWITCHING VALVE ASSY (See  INSPECTION  ) 
    1. NG: REPLACE VACUUM SWITCHING VALVE ASSY 
    2. OK: GO TO NEXT STEP 
  7. CHECK HARNESS AND CONNECTOR (ECM-VACUUM SWITCHING VALVE FOR SECONDARY AIR INJECTION SYSTEM) 
    1. Disconnect the V5 VSV connector.
    2. Disconnect the E6 ECM connector.
    3. Check the resistance.

      Standard (Check for open): 

      ECM-VACUUM SWITCHING VALVE FOR SECONDARY AIR INJECTION SYSTEM TYPICAL MALFUNCTION THRESHOLD RESISTANCE (CHECK FOR OPEN)

      Tester Connections Specified Conditions
      VSV (V5-2) - AIRV (E6-4) Below 1 Ω
      Fig 2: Identifying Terminals Of V5 VSV Connector
      G02599428Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard (Check for short): 

      ECM-VACUUM SWITCHING VALVE FOR SECONDARY AIR INJECTION SYSTEM TYPICAL MALFUNCTION THRESHOLD RESISTANCE (CHECK FOR OPEN)

      Tester Connections Specified Conditions
      VSV (V5-2) or AIRV (E6-4) - Body ground 10 kΩ or higher
    4. Reconnect the VSV connector.
    5. Reconnect the ECM connector.
      Fig 3: Disconnecting E6 ECM Connector
      G02599429Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: GO TO NEXT STEP 
  8. INSPECT ECM (AIR VOLTAGE) 
    1. Connect a pressure gauge to the air pressure sensor as shown in the illustration.
    2. Turn the ignition switch to ON (do not start engine).
    3. Check that the voltage between terminals AIP and E2 of the ECM connectors varies the when pressure is applied to the pressure sensor using the pressure gauge.
      Fig 4: Connecting Pressure Gauge To Air Pressure Sensor
      G02599430Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 5: Inspecting ECM (Air Voltage)
      G02599431Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE PRESSURE SENSOR (TURBO PRESSURE SENSOR) 
    2. OK: GO TO NEXT STEP 

      REPLACE ECM (See  ECM (1ZZ-FE/2ZZ-GE) REPLACEMENT  ) 

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