Chrysler 1997 Stratus Convertible RHD Service Manual page 492

8W - 30 - 20
DESCRIPTION AND OPERATION (Continued)
Circuit Z1 provides the ground path for the heater
circuits in the sensors. This ground terminates at the
right frame rail.
HELPFUL INFORMATION
Circuit A142 splices to supply voltage to the fuel
injectors, ignition coil ( 2.4L only), distributor (2.5L
only), ASD relay, generator, and the EGR solenoid.
The PCM controls the ground path for each of the
components powered by circuit A142.
Circuit K4 splices to supply ground for the signals
for the following:
• Intake air temperature sensor
• Engine coolant temperature sensor
• Manifold absolute pressure sensor
• Throttle position sensor
• A/C pressure switch
• Camshaft position sensor
• Crankshaft position sensor
• Vehicle speed sensor
CRANKSHAFT POSITION SENSOR
All engine packages in this vehicle use a crank-
shaft position sensor.
Circuit K7 supplies 8 volts from the Powertrain
Control Module (PCM) to the crankshaft position
sensor. The K7 circuit connects to cavity 44 of the
PCM.
Circuit K24 from the sensor provides an input sig-
nal to the PCM. The K24 circuit connects to cavity 32
of the PCM. On automatic transmission vehicles this
circuit is splices and provides an input to the Trans-
mission Control Module (TCM).
The PCM provides a ground for the crankshaft
position sensor signal (circuit K24) through circuit
K4. Circuit K4 connects to cavity 43 of the PCM con-
nector.
HELPFUL INFORMATION
On the 2.4L engine the K7 circuit is spliced and
provides 8 volts for the camshaft position sensor. On
the 2.5L engine the K7 circuit supplies 8 volts to the
distributor.
Circuit K4 splices to supply ground for the signals
from the following:
• Intake air temperature sensor
• Engine coolant temperature sensor
• Manifold absolute pressure sensor
• Throttle position sensor
• A/C pressure switch
• Camshaft position sensor
• Vehicle speed sensor
• Heated oxygen sensors
CAMSHAFT POSITION SENSOR (2.4L)
Circuit K7 supplies 8 volts from the Powertrain
Control Module (PCM) to the camshaft position sen-
8W - 30 FUEL/IGNITION SYSTEM
sor. The K7 circuit connects to cavity 44 of the PCM
connector.
Circuit K44 from the sensor provides an input sig-
nal to the PCM. The K44 circuit connects to cavity 33
of the PCM.
The PCM provides a ground for the camshaft posi-
tion sensor signal (circuit K44) through circuit K4.
Circuit K4 connects to cavity 43 of the PCM connec-
tor.
HELPFUL INFORMATION
On the 2.4L engine the K7 circuit is spliced and
provides 8 volts for the crankshaft position sensor.
Circuit K4 splices to supply ground for the signals
from the following:
• Intake air temperature sensor
• Engine coolant temperature sensor
• Manifold absolute pressure sensor
• Throttle position sensor
• A/C pressure switch
• Crankshaft position sensor
• Heated oxygen sensors
CAMSHAFT POSITION SENSOR (2.5L)
This engine uses a camshaft position sensor inter-
nal to the distributor. Refer to distributor operation
in this section for operation of the sensor.
ENGINE COOLANT TEMPERATURE SENSOR
The engine coolant temperature sensor provides an
input to the Powertrain Control Module (PCM) on
circuit K2. This sensor input is also used for the
instrument cluster coolant temperature gauge. Refer
to Section 8W-40 for engine coolant temperature
gauge description.
From circuit K2, the engine coolant temperature
sensor draws up to 5 volts from the PCM. The sensor
is a variable resistor. As coolant temperature changes
the resistance in the sensor changes, causing a
change in current draw. The K2 circuit connects to
cavity 26 of the PCM connector. The PCM provides a
ground for the engine coolant temperature sensor sig-
nal (circuit K2) through circuit K4. Circuit K4 con-
nects to cavity 43 of the PCM.
HELPFUL INFORMATION
Circuit K4 splices to supply ground for the signals
from the following:
• Intake air temperature sensor
• Camshaft position sensor
• Manifold absolute pressure sensor
• Throttle position sensor
• A/C pressure switch
• Crankshaft position sensor
• Vehicle speed sensor
• Heated oxygen sensors
JX