Rodeo S 2WD L4-2.2L (1999)
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
quad driver module (QDM), which can independently control up to 4 output terminals, or Output Driver Module (ODM) which can independently
control up to 7 outputs. Not all outputs are always used.
PCM Inputs/Outputs
Inputs - Operating Conditions Read
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Air Conditioning Compressor Clutch ON or OFF
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Engine Coolant Temperature
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Crankshaft Position
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Exhaust Oxygen Content
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Manifold Absolute Pressure
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Battery Voltage
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Throttle Position
-
Fuel Tank Vapor Pressure
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Fuel Tank Level
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Exhaust Gas Recirculation (EGR) Feedback
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Knock
-
Vehicle Speed
-
Fuel Pump Voltage
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Power Steering Pressure
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Intake Air Temperature
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Camshaft Position
Outputs - Systems Controlled
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EVAP Canister Purge Solenoid
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Exhaust Gas Recirculation (EGR)
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Ignition Control
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Fuel Injector Control
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Idle Air Control
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Coolant Fan Relays
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Electric Fuel Pump Relay Compressor Clutch Relay
-
Air Conditioning
-
Diagnostics
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OBD II Malfunction Indicator Lamp (Check Engine lamp)
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Data Link Connector (DLC)
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Data Output
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Tachometer Signal
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, a DTC will set. The engine will not
start and run without using the 55X reference signal.
Electrically Erasable Programmable Read Only Memory (EEPROM)
The Electronically Erasable Programmable Read Only Memory (EEPROM) is a permanent memory that is physically soldered within the PCM. The
