SFI SYSTEM(w/ EGR System), Diagnostic DTC:P0416 and P0417

DTC Code DTC Name
P0416 Secondary Air Injection System Switching Valve "B" Circuit Open
P0417 Secondary Air Injection System Switching Valve "B" Circuit Shorted

DESCRIPTION

The ECM operates the air injection VSV relay (AI-VSV) which causes the air switching valve (for bank 2) to operate.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Memory

P0416

Secondary Air Injection System Switching Valve "B" Circuit Open

Open or short in the air injection VSV relay (AI-VSV) circuit for 3 seconds (1 trip detection logic).

  • Open or short in air injection VSV relay (AI-VSV) circuit

  • Air injection VSV relay (AI-VSV)

  • ECM

Comes on

DTC stored

P0417

Secondary Air Injection System Switching Valve "B" Circuit Shorted

Open or short in the air injection VSV relay (AI-VSV) circuit for 3 seconds (1 trip detection logic).

  • Open or short in air injection VSV relay (AI-VSV) circuit

  • Air injection VSV relay (AI-VSV)

  • ECM

Comes on

DTC stored

MONITOR DESCRIPTION

These DTCs are designed to detect a malfunction in the air injection VSV (AI-VSV) relay circuit. When the system is normal, the battery voltage is applied to terminal AIR1 of the ECM while the air injection VSV (AI-VSV) relay is turned off, and the battery voltage is not applied to terminal AIR1 of the ECM while the air injection VSV (AI-VSV) relay is turned on. The ECM illuminates the MIL and stores a DTC when either one of the following conditions is detected.

  • The battery voltage is not applied to terminal AIR1 while the air injection VSV (AI-VSV) relay is off.

  • The battery voltage is applied to terminal AIR1 while the air injection VSV (AI-VSV) relay is on.

MONITOR STRATEGY

Required Sensors/Components

Air injection VSV relay (AI-VSV)

Required Sensors/Components

ECM

Frequency of Operation

Continuous

CONFIRMATION DRIVING PATTERN

Note:
  • This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the intelligent tester is prohibited, the intelligent tester display indicates the prohibition (WAIT or ERROR). If ERROR is displayed on the intelligent tester during the test, stop the engine for 10 minutes, and then try again.

  • Performing Secondary Air Injection Check repeatedly may cause damage to the secondary air injection system. If it is necessary to repeat the check, leave an interval of several minutes between System Check operations to prevent the system from overheating.

  • When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running.

  • Turn the engine switch off when the Secondary Air Injection Check operation finishes.

  1. Start the engine and warm it up.

  2. Turn the engine switch off.

  3. Connect the intelligent tester to the DLC3.

  4. Turn the engine switch on (IG).

  5. Turn the tester on.

  6. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).

    Click here

  7. Turn the engine switch off and wait for at least 30 seconds.

  8. Turn the engine switch on (IG) and turn the tester on.

  9. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Automatic Mode.

  10. Start the engine after the intelligent tester initialization is finished.

  11. Perform the System Check operation by pressing ENTER (Next).

  12. Perform the following to confirm the AIR system pending codes: Press ENTER (Exit).

  13. Check for pending DTCs.

    OK

    No pending DTC is output.

  14. After "Secondary Air injection check" is completed, check for All Readiness by entering the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  15. Input the DTC: P0416 or P0417.

  16. Check the DTC judgment result.

    Tester Display

    Description

    NORMAL

    • DTC judgment completed

    • System normal

    ABNORMAL

    • DTC judgment completed

    • System abnormal

    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions

    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tip:
    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

  17. Turn the engine switch off.

WIRING DIAGRAM

A280864E01

CAUTION / NOTICE / HINT

Note:

Inspect the fuses of circuits related to this system before performing the following inspection procedure.

Tip:

Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

  1. INSPECT AIR INJECTION VSV RELAY (AI-VSV)

    1. Inspect the air injection VSV relay (AI-VSV).

      Click here

      Result

      Result

      OK

      NG

    NG

    REPLACE AIR INJECTION VSV RELAY (AI-VSV)

    OK
  2. CHECK AIR INJECTION VSV RELAY (AI-VSV) (POWER SOURCE)

    1. A227244C01

      *1

      Engine Room Relay Block

      *2

      Air Injection VSV Relay (AI-VSV)

      Remove the air injection VSV relay (AI-VSV).

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      Air injection VSV relay (AI-VSV) terminal 2 - Body ground

      Engine switch on (IG)

      11 to 14 V

      Air injection VSV relay (AI-VSV) terminal 5 - Body ground

      Engine switch on (IG)

      11 to 14 V

    3. Reinstall the air injection VSV relay (AI-VSV).

      Result

      Result

      OK

      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK
  3. CHECK HARNESS AND CONNECTOR (ECM - AIR INJECTION VSV RELAY (AI-VSV))

    1. Remove the air injection VSV relay (AI-VSV).

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection

      Condition

      Specified Condition

      Air injection VSV relay (AI-VSV) terminal 1 - C30-20 (AIR1)

      Always

      Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection

      Condition

      Specified Condition

      Air injection VSV relay (AI-VSV) terminal 1 or C30-20 (AIR1) - Body ground

      Always

      10 kΩ or higher

    4. Reinstall the air injection VSV relay (AI-VSV).

    5. Reconnect the ECM connector.

      Result

      Result

      OK

      NG

    OK

    REPLACE ECM

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR