Secondary Air Injection Combination Valve, Checking

Diagnostic Procedures



Secondary Air Injection Combination Valve, Checking

Test sequence

- Select measuring value "Test ID 03: Secondary Air Injection (AIR) system" and check if specified values are attained => [ Diagnostic Mode 06 - Read Test Results for Specific Diagnostic Functions ] Diagnostic Modes 01 - 09, Diagnostic mode 6: Check test results of components that are not continuously monitored.

- End diagnosis and switch ignition off.

If specifications are not obtained:





- Disconnect pressure hose - 1 - at combination valve for secondary air injection.

• Ignore - arrows -.

Connect an appropriate assisting hose to the combination valve.

- Blow into the assisting hose using light pressure (do not use pressurized air).

• Combination valve must be closed, it must not be possible to blow through.

- Blow into the assisting hose using higher pressure (do not use pressurized air).

• The combination valve must open, it must be possible to blow through.

If switching point is not recognized:

- Replace the combination valve: Left and right,

- Repeat function test.

- Check hoses and hose connections for secure seating.

- Repeat function test.

If malfunction is no longer present:

- Erase DTC memory of Engine Control Module => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 09, Diagnostic mode 4: Reset/erase diagnostic data.

- Generate readiness code => [ Readiness Code, Generating ] Monitors, Trips, Drive Cycles and Readiness Codes.