Grand Cherokee 2WD L6-4.0L VIN S (1997)
Manifold Pressure/Vacuum Sensor: Testing and Inspection
Circuit K25 splices to supply 5 Volts to the camshaft position sensor, crankshaft position sensor and throttle position sensor.
Circuit K4 splices to supply ground for the signals from the following:
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Battery temperature sensor
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Camshaft position sensor
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Crankshaft position sensor
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Downstream heated oxygen sensor
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Engine coolant temperature sensor
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Fuel pump module
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Intake air temperature sensor
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Oil pressure sensor
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Powertrain control module
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Throttle position sensor
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Transmission solenoid assembly
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Upstream heated oxygen sensor
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Vehicle speed control switch
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Vehicle speed sensor