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P0416





1UR-FE ENGINE CONTROL: SFI SYSTEM: P0416, P0417: 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.





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





TYPICAL ENABLING CONDITIONS

Case 1





Case 2





TYPICAL MALFUNCTION THRESHOLDS

P0416





P0417





CONFIRMATION DRIVING PATTERN

NOTICE:
- This Air Injection Check only allows technicians to operate the secondary air injection 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 secondary air injection system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again.
- Performing 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 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 Air Injection Check operation finishes.

1. Start the engine and warm it up.

2. Turn the engine switch off.

3. Connect the Techstream to the DLC3.

4. Turn the engine switch on (IG).

5. Turn the Techstream on.

6. Clear DTCs (if stored) Reading and Clearing Diagnostic Trouble Codes.

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

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

9. Enter the following menus: Powertrain / Engine and ECT / Utility / Air injection check / Automatic Mode.

10. Start the engine after the Techstream initialization is finished.

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

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

13. Check for pending DTCs.

OK:

No pending DTC is output.

14. After "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.





HINT
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.

17. If the judgment result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.

HINT
- If no permanent DTC is output, the system is normal.
- If a permanent DTC is output, the system is malfunctioning.

18. Turn the engine switch off.

WIRING DIAGRAM





INSPECTION PROCEDURE

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

HINT
Read freeze frame data using the Techstream. 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)

(a) Inspect the air injection VSV relay (AI-VSV) Testing and Inspection.

NG -- REPLACE AIR INJECTION VSV RELAY (AI-VSV)
OK -- Continue to next step.

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

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

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





Standard Voltage:





Text in Illustration





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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

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

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

(b) Disconnect the ECM connector.

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

Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





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

(e) Reconnect the ECM connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE ECM Removal
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