SFI SYSTEM, Diagnostic DTC:P0416, 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 AI VSV relay which causes the No. 2 emission control valve set to operate.

DTC No. DTC Detection Condition Trouble Area
P0416 Open or short in the air injection VSV relay (AI-VSV) circuit for 3 seconds (1 trip detection logic).

  • Open or short in AI VSV relay circuit

  • No. 1 Integration Relay

  • ECM
P0417 Open or short in the air injection VSV relay (AI-VSV) circuit for 3 seconds (1 trip detection logic).

  • Open or short in AI VSV relay circuit

  • No. 1 Integration Relay

  • ECM

WIRING DIAGRAM

B001H3TE01

CAUTION / NOTICE / HINT

Note

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

Tech Tips

Read freeze frame data using the GTS. 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 NO. 1 INTEGRATION RELAY (AI VSV RELAY)


    1. Inspect the No. 1 integration relay (AI VSV relay) Click here.


    NG

    REPLACE NO. 1 INTEGRATION RELAY

    OK

  2. CHECK HARNESS AND CONNECTOR (ECM - NO. 1 INTEGRATION RELAY)


    1. Remove the No. 1 integration relay from the engine room relay block and junction block assembly.

    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
      1U-1 - G56-24 (AIR1) Always Below 1 Ω
      1W-10 - 1U-3 Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      1U-1 or G56-24 (AIR1) - Body ground Always 10 kΩ or higher
      1W-10 or 1U-3 - Body ground Always 10 kΩ or higher

    4. Reinstall the No. 1 integration relay.

    5. Reconnect the ECM connector.


    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR