Chrysler Stratus RHD 1997 Interactive Electronic Service Manual page 617

8W - 30 - 24
DESCRIPTION AND OPERATION (Continued)
Circuit K6 is spliced and provides 5 volts to the
A/C pressure switch and the throttle position sensor.
Circuit K4 splices to supply ground for the signals
from the following:
• Intake air temperature sensor
• Camshaft position sensor
• Throttle position sensor
• Ambient temperature sensor
• A/C pressure switch
• Crankshaft position sensor
• Vehicle speed sensor
• Heated oxygen sensors
INTAKE AIR TEMPERATURE SENSOR
On the 2.0L engine the intake air temperature sen-
sor is combination unit with the map sensor.
The intake air temperature sensor provides an
input to the Powertrain Control Module (PCM) on
circuit K21. The K21 circuit connects to cavity 37 of
the PCM connector.
From circuit K21, the intake air temperature sen-
sor draws voltage from the PCM. The sensor is a
variable resistor. As intake air temperature changes,
the resistance in the sensor changes, causing a
change in current draw.
The PCM provides a ground path for the intake air
temperature sensor signal (circuit K21) through cir-
cuit K4. Circuit K4 connects to cavity 43 of the PCM
connector.
HELPFUL INFORMATION
Refer to group 14 for intake air temperature sensor
operation.
Circuit K4 splices to supply ground for the signals
from the following:
• Manifold absolute pressure sensor
• Camshaft position sensor
• Throttle position sensor
• Ambient temperature sensor
• A/C pressure switch
• Crankshaft position sensor
• Vehicle speed sensor
• Heated oxygen sensors
KNOCK SENSOR (2.0L and 2.4L only)
The knock sensor provides an input to the Power-
train Control Module (PCM) on circuit K42. Circuit
K42 connects to cavity 24 of the PCM connector.
The knock sensor is case grounded to the engine
block.
HELPFUL INFORMATION
Refer to group 14, for knock sensor operation.
8W - 30 FUEL/IGNITION SYSTEM
BATTERY TEMPERATURE SENSOR
The battery temperature sensor draws voltage
from the Powertrain Control Module (PCM) on circuit
K118. The sensor is a variable resistor. As tempera-
ture changes, the resistance draw in the sensor
changes causing a change in current draw. Circuit
K118 connects to cavity 52 of the PCM connector.
The PCM provides a ground for the ambient tem-
perature sensor on circuit K4. Circuit K4 connects to
cavity 43 of the PCM connector.
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
FUEL INJECTORS
Circuit A14 is connected to the BUS bar in the
Power Distribution Center (PDC), and connects to
battery voltage. The contact side of the Automatic
Shut-Down (ASD) relay connects circuit A14 and
A142. A 20 amp fuse, in cavity 5 of the PDC, protects
circuits A14 and A142.
Circuit A14 also supplies voltage to the coil side of
the ASD relay. The Powertrain Control Module
(PCM) controls the ground path circuit for the coil
side of the ASD relay on circuit K51. Circuit K51 con-
nects to cavity 67 of the PCM.
Circuit A142 supplies voltage for the fuel injectors.
The PCM controls the ground circuit of each injector,
as follows:
• Circuit K11 is the ground circuit for Injector #1.
Circuit K11 connects to cavity 13 of the PCM.
• Circuit K12 is the ground circuit for Injector #2.
Circuit K12 connects to cavity 17 of the PCM.
• Circuit K13 is the ground circuit for Injector #3.
Circuit K13 connects to cavity 7 of the PCM.
• Circuit K14 is the ground circuit for Injector #4.
Circuit K14 connects to cavity 16 of the PCM.
On the 2.5L engine there are two additional injec-
tors used. The PCM controls the ground path for
these injectors as follows:
• Circuit K38 is the ground circuit for Injector #5.
Circuit K38 connects to cavity 15 of the PCM.
• Circuit K58 is the ground circuit for Injector #6.
Circuit K58 connects to cavity 14 of the PCM.
JA