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Home >> Mazda >> 1997 >> 626 DX L4-2.0L DOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Pressure Feedback Exhaust Sensor >> Testing and Inspection >> EGR Boost Sensor Solenoid Valve
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EGR Boost Sensor Solenoid Valve




NOTE: Verify that EGR boost sensor solenoid valve connector is security connected.

1. Warm up the engine to normal operating temperature and let it idle.
2. Disconnect the vacuum hose from the EGR boost sensor side of the EGR boost sensor solenoid valve.
3. Put a finger on the port of the EGR boost sensor solenoid valve and verify that no vacuum is felt.
4. If not as specified, check the EGR boost sensor, wiring harness, and connectors.

Inspection
1. Remove the EGR boost sensor solenoid valve.

EGR Boost Sensor Solenoid Valve Inspection 1:




2. Blow air into each port and verify that air flows as specified.

EGR Boost Sensor Solenoid Valve Inspection 1 Details:




3. If not as specified, replace the EGR boost sensor solenoid valve.

EGR Boost Sensor Solenoid Valve Inspection 2:




4. Apply battery positive voltage between the terminals of the EGR boost sensor solenoid valve.
5. Blow air into each port and verify that air flows as specified.

EGR Boost Sensor Solenoid Valve Inspection 2 Details:




6. If not as specified, replace the EGR boost sensor solenoid valve.
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