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___________________________________________ Fuel, Emissions, and Exhaust 3-17 ® 5745159 Crankshaft Position Sensor The crankshaft position sensor is a Hall-effect device that mon- A sensor fault will cause a “crank reference missed” reading to If a sensor fault occurs, check the sensor wiring and connectors Sensor Test 1. Disconnect wires at fuel shut-off solenoid. 2. Connect voltmeter between PCM terminal BRA5 and • If meter indicates 5 volts, sensor is OK. • If meter indicates less than 5 volts or zero volts, check 5 volt reference at PCM terminal BRD13. • If 5 volt reference is OK, problem is bad connection or failed sensor. Boost Sensor The PCM supplies the boost sensor with a 5 volt reference sig- A sensor failure will result in loss of turbocharger boost and Figure 3-20: Crankshaft Position Sensor Circuit Figure 3-21: Boost Sensor Circuit |