MX-5 Miata Mazdaspeed L4-1.8L DOHC Turbo (2004)
EGR Boost Control Solenoid: Testing and Inspection
EGR BOOST SENSOR SOLENOID VALVE INSPECTION
Airflow Inspection
NOTE: Perform the following test only when directed.
1. Disconnect the negative battery cable.
2. Remove the EGR boost sensor solenoid valve.
3. Inspect airflow between each port under the following conditions:
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If as specified, inspect the vacuum hoses for improper routing, kinks or leakage, and carry out "Circuit Open/Short Inspection".
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If not as specified, replace the EGR boost sensor solenoid valve.
4. Connect the negative battery cable.
Circuit Open/Short Inspection
Open circuit
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GND circuit (EGR boost sensor solenoid valve connector terminal B and PCM connector terminal 3D)
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Power circuit (EGR boost sensor solenoid valve connector terminal A and main relay connector terminal D through common connector)
Short circuit
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EGR boost sensor solenoid valve connector terminal B and PCM connector terminal 3D to GND
