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Home >> Mazda >> 2007 >> B3000 Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Engine Controls - System & Component Testing) >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION (EGR) System >> EGR Boost Sensor
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EGR Boost Sensor

WARNING: This page is about a different car, the 2001 Mazda Protege, 2001 Mazda Millenia, 2001 Mazda MX-5 Miata, 2001 Mazda MPV, and 2001 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Millenia 2.3L & Miata models are not equipped with EGR Boost Sensor
  1. Connect NGS scan tool to DLC-2. DLC-2 is located under left side of instrument panel. Turn ignition on. Using scan tool, access DIAGNOSTIC DATA LINK menu, and select PCM. Highlight and select PID/DATA MONITOR AND RECORD. Select BARO V PID.
  2. Ensure BARO V PID is within specification. Voltage should be 2.3-4.7 volts. If BARO voltage is not as specified, locate and repair open or short circuit in wire harness between EGR boost sensor and PCM. See Fig 1 . See WIRING DIAGRAMS article. If voltage is as specified, go to next step.
  3. Apply vacuum to EGR boost sensor and monitor BARO voltage. If vacuum is exceeded, EGR boost sensor will be damaged. Voltage should vary between 0.8-1.3 volts. If voltage readings vary as vacuum is applied, EGR boost sensor is functioning properly. If voltage readings do not vary as vacuum is applied, replace EGR boost sensor.
Fig 1: Identifying Boost Sensor Terminals
G97G07735Courtesy of MAZDA MOTORS CORP.
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