Raider V6-3.7L SOHC (2006)
by turning the ground circuit to each individual injector on and off. The PCM ignores the oxygen sensor input signal and provides a predetermined
amount of additional fuel. This is done by adjusting injector pulse width.
-
The PCM adjusts ignition timing by turning the ground path to the coil on and off.
IGNITION SWITCH OFF MODE
When ignition switch is turned to OFF position, the PCM stops operating the injectors, ignition coil, ASD relay and fuel pump relay.
OPERATION
The PCM is a pre-programmed, microprocessor digital computer. It regulates ignition timing, air-fuel ratio, emission control devices, charging system,
certain transmission features, speed control, air conditioning compressor clutch engagement and idle speed. The PCM can adapt its programming to meet
changing
operating conditions.
The PCM receives input signals from various switches and sensors. Based on these inputs, the PCM regulates various engine and vehicle operations
through different system components. These components are referred to as Powertrain Control Module (PCM) Outputs. The sensors and switches that
provide inputs to the PCM are considered Pow-ertrain Control Module (PCM) Inputs.
The PCM adjusts ignition timing based upon inputs it receives from sensors that react to: engine rpm, manifold absolute pressure, engine coolant
temperature, throttle position, transmission gear selection (automatic transmission), vehicle speed and the brake switch.
The PCM adjusts idle speed based on inputs it receives from sensors that react to: throttle position, vehicle speed, transmission gear selection, engine
coolant temperature and from inputs it receives from the air conditioning clutch switch and brake switch. Based on inputs that it receives, the PCM
adjusts ignition coil dwell. The PCM also adjusts the generator charge rate through control of the generator field and provides speed control operation.
NOTE: PCM Inputs:
-
Accelerator pedal position sensor (if equipped)
-
A/C request (if equipped with factory A/C)
-
A/C select (if equipped with factory A/C)
-
Auto shutdown (ASD) sense
-
Battery temperature
-
Battery voltage
-
Brake switch
-
CAN bus (+) circuits
-
CAN bus (-) circuits
-
Camshaft position sensor signal
-
Clutch Interlock Switch (if equipped)
-
Crankshaft position sensor
-
Data link connection for diagnostic scan tool
-
EGR position sensor (if equipped)
-
Engine coolant temperature sensor
-
Fuel level
-
Generator (battery voltage) output
-
Ignition circuit sense (ignition switch in on/off/ crank/run position)
-
Intake manifold air temperature sensor
-
Knock sensor(s) (if equipped)
-
Leak detection pump (switch) sense (if equipped)
-
Manifold absolute pressure (MAP) sensor
-
Oil pressure sensor
-
Output shaft speed sensor
-
Overdrive/override switch
-
Oxygen sensors
-
Park/neutral switch (auto. trans. only)
-
Power ground
-
Power steering pressure switch (if equipped)
-
Sensor return
-
Signal ground
-
Speed control multiplexed single wire input
-
Throttle position sensor
-
Transmission governor pressure sensor
-
Transmission output speed sensor
-
Transmission temperature sensor
-
Vehicle speed inputs from ABS or RWAL system
NOTE: PCM Outputs:
-
A/C clutch relay
-
Auto shutdown (ASD) relay
-
CAN bus (+/-) circuits for: speedometer, voltmeter, fuel gauge, oil pressure gauge/lamp, engine temperature gauge and speed control warning
