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Home >> Mazda >> 1995 >> Protege L4-1.5L DOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> EGR Valve Position Sensor >> Testing and Inspection
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EGR Valve Position Sensor: Testing and Inspection

Inspection
1. Disconnect the EGR valve position sensor connector.




2. Measure the resistance between terminals A and B by using an ohmmeter.

Specification: 2.7 k Ohms

3. If not as specified, replace the EGR valve.
4. Connect the EGR valve position sensor connector.




5. Disconnect the vacuum hose from the EGR valve and install a vacuum pump to the valve.
6. Turn the ignition switch to ON.
7. Measure the voltage at the PCM terminal 3J.

Measuring condition Voltage (V)
Approx. 0 kPa (0 mmHg, 0 inHg) Approx. 0.8
Approx. 17 kPa (128 mmHg, 5.04 inHg) Approx. 4.9

8. If not as specified, inspect the harness and connector between the EGR valve position sensor and the PCM terminal.
9. If these harness and connector are OK, replace the EGR valve.
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