Passport LX 4WD V6-3.2L DOHC (6VD1) (2000)
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Engine Coolant Temperature
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Crankshaft Position
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Exhaust Oxygen Content
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Electronic Ignition
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Manifold Absolute Pressure
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Battery Voltage
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Throttle Position
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Vehicle Speed
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Fuel Pump Voltage
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Power Steering Pressure
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Intake Air Temperature
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Mass Air Flow
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Engine knock
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Camshaft Position
Outputs - Systems Controlled
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EVAP Canister Purge
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Exhaust Gas Recirculation (EGR)
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Ignition Control
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Fuel Control
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ION Sensing Module
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Electric Fuel Pump
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Air Conditioning
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Diagnostics
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Malfunction Indicator Lamp
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Data Link Connector (DLC)
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Data Output
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Transmission Control Module
PCM Voltage Description
PCM Voltage Description
The PCM supplies a buffered voltage to various switches and sensors. It can do this because resistance in the PCM is so high in value that a test light
may not illuminate when connected to the circuit. An ordinary shop voltmeter may not give an accurate reading because the voltmeter input impedance is
too low. Use a 10 megohms input impedance digital voltmeter (such as J 39200) to assure accurate voltage readings.
The input/output devices in the PCM include analog-to-digital converters, signal buffers, counters, and special drivers. The PCM controls most
components with electronic switches which complete a ground circuit when turned "ON." These switches are arranged in groups of 4 and 7, called either
a surface-mounted quad driver module (QDM), which can independently control up to 4 output terminals, or QDMs which can independently control up
to 7 outputs. Not all outputs are always used.
Powertrain Control Module (PCM)
Powertrain Control Module (PCM)
The powertrain control module (PCM) is located in the passenger compartment below the center console.
The PCM controls the following:
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Fuel metering system.
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Transmission shifting (automatic transmission only).
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Ignition timing.
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On-board diagnostics for powertrain functions.
The PCM constantly observes the information from various sensors. The PCM controls the systems that affect vehicle performance. The PCM performs
the diagnostic function of the system. It can recognize operational problems, alert the driver through the MIL (Check Engine lamp), and store diagnostic
trouble codes (DTCs). DTCs identify the problem areas to aid the technician in making repairs.
58X Reference PCM Input
58X Reference PCM Input
The powertrain control module (PCM) uses this signal from the crankshaft position (CKP) sensor to calculate engine RPM and crankshaft position at all
engine speeds. The PCM also uses the pulses on this circuit to initiate injector pulses. If the PCM receives no pulses on this circuit, DTC P0337 will set.
The engine will not start and run without using the 58X reference signal.
