Chrysler 1997 Stratus Convertible RHD Service Manual page 491

JX
DESCRIPTION AND OPERATION (Continued)
The universal data link connector is also interfaced
with the CCD Bus. Circuit D1 is used for CCD (+)
and D2 is used for CCD (-).
There are also two grounds used for the universal
data link connector. One is a power ground and one
is a regular ground.
AUTOMATIC SHUT-DOWN RELAY
The Automatic Shut-Down (ASD) relay is located
in the Power Distribution Center (PDC). Power for
the coil and contact side of the relay is provided by
circuit A14. This circuit is HOT at all times and pro-
tected by a 20 amp fuse located in cavity 5 of the
PDC.
The Powertrain Control Module (PCM) controls the
ground path for the relay on circuit K51. This circuit
connects to cavity 67 of the PCM connector.
When the relay is energized, the contacts internal
to the relay CLOSE connecting circuits A14 and
A142. The A142 circuit is spliced and provides power
to the fuel injectors, generator, electronic EGR trans-
ducer solenoid, and the ignition coil.
The A142 circuit is also spliced and connects to the
PCM connector, cavity 6. This input is used for ASD
sense by the PCM.
HELPFUL INFORMATION
• Refer to group 14, for system operation.
Check the 20 amp fuse located in cavity 5 of the
PDC.
FUEL PUMP MOTOR
The fuel pump motor, located in the fuel tank, is
controlled by the fuel pump relay located in the
Power Distribution Center (PDC). Power for the coil
side of the relay is provided by circuit F12. The F12
circuit is HOT in the START and RUN position only
and protected by a 10 amp fuse located in cavity 10
of the PDC.
Circuit A21 is used to power the fuse and is con-
nected between the ignition switch and the PDC.
Power for the A21 circuit is provided by circuit A1.
This circuit originates in the PDC and is protected by
a 20 amp fuse located in cavity 8.
The F12 circuit is spliced and provides voltage to
the Powertrain Control Module (PCM) and the Con-
troller Anti-Lock Brake (CAB) module.
The ground for the coil side of the relay is con-
trolled by the PCM through circuit K31. The K31 cir-
cuit connects to cavity 74 of the PCM. Logic internal
to the PCM determines when the coil side of the
relay should be grounded.
When the PCM grounds circuit K31, the contacts
in the fuel pump relay CLOSE connecting circuits A1
and A141. Circuit A1 is connected to the BUS bar in
the PDC, HOT at all times, and protected by a 20
amp fuse located in cavity 8. Circuit A141 is con-
8W - 30 FUEL/IGNITION SYSTEM
nected from the relay to the fuel pump motor.
Ground for the fuel pump motor is provided on cir-
cuit Z1.
HELPFUL INFORMATION
• Check the 20 amp fuse located in cavity 8 of the
PDC
• Check the 10 amp fuse located in cavity 10 of
the PDC
• Check the ground
• Refer to group 14 of the Service Manual or the
appropriate Diagnostic Test Procedures Manual for
additional information.
VEHICLE SPEED INPUT
Circuit G7 provides an input to the Powertrain
Control Module (PCM) on circuit G7 from the Trans-
mission Control Module (TCM). This circuit connects
to cavity 66 of the PCM connector, and cavity 58 of
the TCM connector.
If the vehicle is equipped with speed proportional
steering, the G7 circuit is spliced and provides an
input to the module.
HEATED OXYGEN SENSORS
Circuit A14 is connected to the BUS bar in the
Power Distribution Center (PDC), which connects to
battery voltage. The contact side of the Automatic
Shut-Down (ASD) relay connects circuit A14 and cir-
cuit A142. A 20 amp fuse, located 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.
The A142 circuit also splices to cavity 6 of the PCM
connector. The input by circuit A142 tells the PCM
that the ASD relay is energized.
The A142 circuit supplies voltage for the upstream
heated oxygen sensor and circuit F142 supplies volt-
age to the downstream heated oxygen sensor. The
F142 circuit is protected by a 10 amp fuse located in
cavity 1 of the PDC. Power for the fuse is supplied by
circuit A142.
Circuit K41 delivers the signal from the upstream
heated oxygen sensor to the PCM. Circuit K41 con-
nects to cavity 30 of the PCM connector.
Circuit K141 delivers the signal from the down-
stream heated oxygen sensor to the PCM. Circuit
K141 connects to cavity 51 of the PCM connector.
The PCM provides a ground for the upstream (left)
and downstream (right) heated oxygen sensor signals
(circuits K41 and K141) through circuit K4. Circuit
K4 connects to cavity 43 of the PCM connector.
8W - 30 - 19