Dodge 2004 Neon SX2 Diagnostic Manual page 738

Set condition: If no PCI bus messages are received
by the Transmission Control System for 10 seconds.
Theory of operation: The PCM communicates
with the other modules in the vehicle using the PCI
bus. It relies on certain information to function
properly. The PCM continuously monitors the PCI
bus to check for messages broadcast from the
certain modules.
Transmission Effects: Possible improper PCM
AutoStick configuration and delayed 3-4 shifts. No
EMCC and early 3-4 shifts for a few minutes after
engine is started.
Possible causes:
> Open or shorted PCI bus circuit from BCM
> PCM
Name of code: P0562(79) Low Battery Voltage
When monitored: Continuously with engine run-
ning and Transmission Relay energized.
Set condition: If the voltage sensed at the Trans-
mission Control Relay Output Sense circuit(s) to
the PCM is less than 10.0 volts for the period of 15
seconds. The DTC will also set if the direct battery
voltage sensed in the PCM is less than 6.5v for
200ms or where Transmission Control Relay Out-
put Sense circuit (switched battery) is less than
7.2v for 200ms.
NOTE: P0562 generally indicates a gradually
falling battery voltage
connection(s) to the PCM.
Theory of operation: The Transmission system
requires sufficient battery voltage in order to ener-
gize the transmission solenoids. The PCM contin-
uously monitors the voltage available to the sole-
noids.
Transmission effects: At speeds above 72 Km/h
(45 MPH) the transmission system will default to
neutral. Below 72 Km/h (45 MPH) the transmis-
sion system will default to Limp-in mode and the
MIL will illuminate after 5 minutes of substituted
operation. Manual gear selection of Park, Reverse,
Neutral and Second will be available.
Possible causes:
> Charging system problem
> Poor/High resistance connection between PCM
and Battery/Alternator
> PCM high resistance or poor connection
> PCM ground high resistance or poor connection
> High resistance in Transmission Control Relay
contacts
> PCM
Name of code: P0711(7A) - Transmission temper-
ature sensor performance
When monitored: Every 7 milliseconds with the
engine running and no loss of prime DTC set.
or a resistive
17
GENERAL INFORMATION
Set condition: A temperature reading of 80°F is
not reached in the specified period of time.
Theory of operation: The temperature sensor
(thermistor) is used to sense the temperature of the
transmission fluid. Transmission fluid tempera-
ture can affect shift quality, torque converter lock-
up, and when and if some diagnostics are run. A
failed temperature sensor could affect the OBDII
diagnostics, therefore when a fault is detected in
the temperature sensor circuit, transmission tem-
perature will be based on a calculated temperature
value.
Transmission effects: When the fault is set,
calculated temperature is substituted for mea-
sured temperature, however the fault code is
stored only after three consecutive occurrences of
the fault.
Possible causes:
> Temperature sensor
> Temperature sensor wiring circuit.
> Internal controller
Name of code: P0712(7B) - Transmission temper-
ature sensor low
When monitored: Every 7 milliseconds with the
engine running and no loss of prime DTC set.
Set condition: Sensor output voltage less than
0.078v.
Theory of operation: The temperature sensor
(thermistor) is used to sense the temperature of the
transmission fluid. Transmission fluid tempera-
ture can affect shift quality, torque converter lock-
up, and when and if some diagnostics are run. A
failed temperature sensor could affect the OBDII
diagnostics, therefore when a fault is detected in
the temperature sensor circuit, transmission tem-
perature will be based on a calculated temperature
value.
Transmission effects: When the fault is set,
calculated temperature is substituted for mea-
sured temperature, however the fault code is
stored only after three consecutive occurrences of
the fault.
Possible causes:
> Temperature sensor
> Temperature sensor wiring circuit.
> Internal controller
Name of code: P0713(7C) - Transmission temper-
ature sensor high
When monitored: Every 7 milliseconds with the
engine running and no loss of prime DTC set.
Set condition: Sensor output voltage greater than
4.94v.
Theory of operation: The temperature sensor
(thermistor) is used to sense the temperature of the
transmission fluid. Transmission fluid tempera-