Intrepid V6-201 3.3L (1995)
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Monitor crankshaft and camshaft position sensor. If signals are not received within 1 second, the PCM will shut down the ASD and fuel pump
relays.
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Supply the injectors with a ground path, firing all injectors until the PCM determines crankshaft position.
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Fire injectors in sequence, once PCM has determined crankshaft position.
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Compare 0 RPM MAP sensor reading to idle speed MAP sensor reading. If the PCM does not detect a minimum difference it will set a
Diagnostic Trouble Code.
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Determine proper ignition timing.
Engine Warm Up
This is an OPEN LOOP mode.
During engine warm-up, the PCM receives input from:
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Battery voltage
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Crankshaft position (CKP) sensor
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Engine coolant temperature (ECT) sensor
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Intake air temperature (IAT) sensor
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Manifold absolute pressure (MAP) sensor
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Throttle position sensor (TPS)
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Camshaft position (CMP) sensor
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A/C select switch
Based on these inputs the PCM will:
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Apply voltage to the injectors. The PCM then controls injection sequence and pulse width by switching individual injector ground paths on and
off.
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Adjust engine idle speed through the IAC motor.
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Adjust ignition timing.
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Begin to monitor oxygen sensor. When engine is at operating temperature, the system will leave warm up mode and go into closed loop
operation.
Wide Open Throttle (WOT)
This is an OPEN LOOP mode.
During wide open throttle operation the PCM receives the following inputs:
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Battery voltage
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Camshaft position (CMP) sensor
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Engine coolant temperature (ECT) sensor
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Manifold absolute pressure (MAP) sensor
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Intake air temperature (IAT) sensor
