EGR VALVE POSITION SENSOR INSPECTION [MZR-CD (RF Turbo)]
BME014018881201
Voltage Inspection
1. Disconnect the vacuum hose from the EGR valve position sensor and connect the vacuum pump to the EGR valve.
2. Turn the engine switch to the ON position.
3. Verify that the voltage at terminal B changes while applying the vacuum to the EGR valve as show in the graph.
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• If not as specified, replace the EGR valve.
Specification
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Vacuum
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Voltage
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0- -33.3±3.3 kPa {0- -249.8±24.7 mmHg, 0- -9.83±0.97 inHg} or above
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Approx. 0.54 V
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-73.3 kPa {-549.8 mmHg, -21.7 inHg} or below
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4.09-4.59 V
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Resistance Inspection
1. Disconnect the EGR valve position sensor connector.
2. Measure the resistance between terminal A and C.
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• If not as specified, replace the EGR valve.
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EGR valve position sensor resistance
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Approx. 5 kilohms
Circuit Open/Short Inspection
1. Inspect for open/short circuit in the following wiring harnesses.
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• If there is open/short circuit, repair or replace wiring harnesses.
Open circuit
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• Power circuit
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- EGR valve position sensor terminal C and PCM terminal 32
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• Signal circuit
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- EGR valve position sensor terminal B and PCM terminal 90
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• GND circuit
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- EGR valve position sensor terminal A and PCM terminal 91
Short circuit
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• Power circuit
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- EGR valve position sensor terminal B and PCM terminal 90 to GND
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• Signal circuit
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- EGR valve position sensor terminal C and PCM terminal 32 to power circuit
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- EGR valve position sensor terminal C and PCM terminal 32 to GND
