LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2006 >> Corolla CE, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Control System (SFI) (2ZZ-GE) - Diagnostics) >> DTC P2444, P2445: Secondary Air Injection System Pump Stuck On/Off Bank 1 >> Inspection Procedure >> Hand-held tester:

Hand-held tester:

WARNING: This page is about a different variant/trim than selected.

HINT:

It is possible to check the pressure in the secondary air passage using a hand-held tester.

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2444 AND/OR P2445) 
    1. Connect a hand-held tester to the DLC3.
    2. Turn the ignition switch to ON and turn the tester ON.
    3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    4. Read DTCs.

      Result: 

      DTC OUTPUT RESULT

      Display (DTC output) Proceed To
      P2444 and/or P2445 A
      P2444 and/or P2445, and other DTCs B

      HINT:

      If any DTCs other than P2444 and/or P2445 are output, troubleshoot those DTCs first.

    1. B: GO TO  DIAGNOSTIC TROUBLE CODE CHART  
    2. A: GO TO NEXT STEP 
  2. PERFORM ACTIVE TEST USING HAND-HELD TESTER (VSV FOR SECONDARY AIR INJECTION SYSTEM) 
    1. Connect the hand-held tester to the DLC3.
    2. Turn the ignition switch to ON and turn the tester ON.
    3. Start the engine.
    4. On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / SECOND AIR VSV / ALL or USER DATA.
      NOTE: When selecting USER DATA, select SECONDARY AIR and SECOND AIR VSV on the tester screen by pressing the YES button on the tester.

      HINT:

      When the Vacuum Switching Valve (VSV) of the secondary air system is operated, the air pump operates simultaneously.

    5. Check that the SECONDARY AIR, SECOND AIR VSV and 2ND AIR PRESS, displayed on the tester, indicate the conditions shown in the table below.
      NOTE: This test only allows technicians to operate the VSV for 5 seconds. If the test is repeated, intervals of at least 30 seconds are required between tests.
      VSV FOR SECONDARY AIR INJECTION SYSTEM INSPECTION

      Tester Operations SECONDARY AIR ((1)) SECOND AIR VSV ((2))
      VSV: ON ON ON
      VSV: OFF OFF OFF
      (1) Denotes the signal transmitted by the ECM to operate the air pump.
      (2) Denotes the signal transmitted by the ECM to operate the VSV.

      HINT:

    1. NG: Go to step   11 
    2. OK: GO TO NEXT STEP 
  3. CHECK STORED DTCS 
    1. Connect the hand-held tester to the DLC3.
    2. Turn the ignition switch to ON and turn the tester ON.
    3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    4. Read DTCs.
      DTC OUTPUT RESULT

      Display (DTC Output) Proceed To
      P2444 A
      P2445 B
    1. a: Go to step   9 
    2. B: GO TO NEXT STEP 
  4. CHECK VACUUM HOSE 
    1. Check the vacuum hose connections with the pressure sensor and air switching valve.
    2. Inspect the vacuum hose for blockages and damage.
    1. NG: REPAIR OR REPLACE VACUUM HOSE 
    2. OK: GO TO NEXT STEP 
  5. CHECK AIR INJECTION SYSTEM PIPING CONNECTIONS 
    1. Check that all the pipes and hoses between the air pump and air switching valve are securely connected.
    2. Inspect the pipes and hoses for blockages and damage.
    1. NG: REPAIR OR REPLACE AIR INJECTION SYSTEM PIPING 
    2. OK: GO TO NEXT STEP 
  6. CHECK AIR PUMP FUSE 
    1. Remove the AIR PUMP fuse from the relay block.
    2. Check the AIR PUMP fuse resistance.

      Standard: Below 1 Ω 

    3. Reinstall the AIR PUMP fuse.
      Fig 1: Identifying Location Of Air Pump Fuse
      G02599433Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: CHECK FOR SHORT IN ALL HARNESSES AND COMPONENTS CONNECTED TO FUSE 
    2. OK: GO TO NEXT STEP 
  7. CHECK AIR PUMP ASSEMBLY POWER SOURCE VOLTAGE 
    1. Disconnect the A24 air pump relay connector.
    2. Measure the voltage between terminal 4 of the air pump relay connector and body ground.

      Standard: Between 9 V and 14 V 

    3. Reconnect the air pump relay connector.
      Fig 2: Identifying Terminals Of A24 Air Pump Relay Connector
      G02599434Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR AIR PUMP POWER SOURCE CIRCUIT 
    2. OK: GO TO NEXT STEP 
  8. CHECK HARNESS AND CONNECTOR (AIR PUMP ASSEMBLY-BODY GROUND) 
    1. Disconnect the A22 air pump motor connector.
    2. Check the resistance.

      Standard (Check for open): 

      AIR PUMP ASSEMBLY-BODY GROUND RESISTANCE

      Tester Connections Specified Conditions
      Air pump motor (A22-3) - Body ground Below 1 Ω
    3. Reconnect the air pump motor connector.
      Fig 3: Identifying Terminals Of A22 Air Pump Motor Connector
      G02599435Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: GO TO NEXT STEP 
  9. INSPECT AIR PUMP ASSY (See  INSPECTION  ) 
    1. NG: REPLACE  AIR PUMP ASSY (2ZZ-GE) 
    2. OK: GO TO NEXT STEP 
  10. CHECK HARNESS AND CONNECTOR (ECM-AIR PUMP ASSEMBLY) 
    1. Disconnect the A24 air pump relay connector.
    2. Disconnect the E6 ECM connector.
    3. Check the resistance.

      Standard (Check for open): 

      ECM-AIR PUMP ASSEMBLY RESISTANCE (CHECK FOR OPEN)

      Tester Connections Specified Conditions
      Air pump relay (A24-1) - AIRP (E6-5) Below 1 Ω

      Standard (Check for short): 

      ECM-AIR PUMP ASSEMBLY RESISTANCE (CHECK FOR SHORT)

      Tester Connections Specified Conditions
      Air pump relay (A24-1) or AIRP (E6-5) - Body ground 10 kΩ or higher
      Fig 4: Identifying Terminals Of A24 Air Pump Relay Connector
      G02599436Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reconnect the air pump relay connector.
    5. Reconnect the ECM connector.
      Fig 5: Disconnecting E6 ECM Connector
      G02599437Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: GO TO NEXT STEP 
  11. INSPECT ECM (AIP VOLTAGE) 
    1. Connect a pressure gauge to the pressure sensor as shown in the illustration.
    2. Turn the ignition switch to ON (do not start engine).
    3. Check for voltage change between terminals AIP and E2 of the ECM connector when the pressure is applied to the pressure sensor using the pressure gauge.
      Fig 6: Connecting Pressure Gauge To Pressure Sensor
      G02599438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 7: Inspecting ECM (AIP Voltage)
      G02599439Courtesy 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  ) 

scientia non olet · About LEMON Manuals