Chrysler Concorde 2004 Service Manual page 1170

GENERAL INFORMATION
indicate "OD" until the shifter is shifted into the
"OD" position and held for at least 3 seconds.
> Worn Manual Lever (Rooster Comb). Check for
heavy wearing of TRS switch contacts
> Intermittent C1 through C4 (T1, T3, T41 or T42)
circuits. Check for corrosion, terminal push-outs
or spread terminals at PCM or TRS switch
10-way connector
> TRS
> PCM
> BCM
Scenario 3) - If an invalid code happens while
operating in the "3" or "L" position, the "3" or "L"
shift schedule and electronic display will be frozen
(regardless of whether "OD", "3" or "L" is selected).
The display will be frozen until the shifter is moved
to the "N" position (all PRNDL lights will illumi-
nate) and then back to the "OD" position. The "N"
and "OD" position must be held for at least 3
seconds in each position to resume the normal
"OD" shift schedule and electronic display.
> Intermittent C1 through C4 (T1, T3, T41 or T42)
circuits. Check for corrosion, terminal push-outs
or spread terminals at PCM and/or TRS connec-
tor
> TRS
> PCM
> BCM
These same symptoms may occur without the code
P0706(28) getting set. It is possible that the invalid
code that was sensed by the PCM only occurred
once or twice during the given ignition key start
and/or did not last for longer than 0.1 second.
Name of code: P0124(29) - Throttle Position
Sensor/APPS Intermittent
Name of code: P0122(2A) - Throttle Position Sen-
sor /APPS Low
Name of code: P0123(2B) - Throttle Position Sen-
sor /APPS High
When monitored: Whenever the key is on or the
engine is running. Engine speed > 500 rpm
Set condition:
P0124 - Throttle angle change > 5° in 7 millisec-
onds the Fault set time milliseconds 0.448
seconds
P0122 - Throttle angle < 6° the Fault Set Time:
0.448 seconds
P0123 - Throttle angle > 120.6° the Fault Set Time:
0.448 seconds
Theory of operation: The transmission control-
ler receives the throttle position signal and its
ground from the Throttle Position Sensor (TPS).
The TPS has a 5 volt pull up supplied by the engine
controller. The throttle signal is checked for out-of-
range as well as intermittency (excessive signal
changes). The engine controller transmits the
throttle value via the Dual Port RAM. Most engine
controllers can synthesize the throttle value if the
throttle position sensor signal is lost. If a throttle
error is detected by the transmission controller and
the throttle value is available via the Dual Port
RAM, the Dual Port RAM throttle value will be
used and normal operation will continue, however
a throttle fault code will be set. If a throttle error is
detected and the throttle value is not available via
the Dual Port RAM, normal operation will be
discontinued, a throttle fault code will be set, and
the MIL will be turned on after 5 min. of substi-
tuted operation.
Transmission Effects:
• If throttle value available via the Dual Port RAM
-No effect.
• If throttle value not available via the Dual Port
RAM
A default throttle value is used.
Torque converter lock-up inhibited.
4th gear inhibited.
Limited shift schedule.
MIL on after 5 min. of substituted operation.
•
Possible causes:
> Wiring problem
> TPS
> PCM
Name of code: P0870(31) - OD Hydraulic Pres-
sure Test Failure
P0845(32) - 2/4 Hydraulic Pressure Test Failure
P0992(33) - 2-4/OD Hydraulic Pressure Test Failure
When monitored: In 1st, 2nd, or 3rd gear with
engine speed above 1000 RPM shortly after a shift
and every minute thereafter.
Set condition: Immediately after a shift into 1st,
2nd, or 3rd gear, with engine speed above 1000
RPM, the PCM momentarily turns on element
pressure to the 2/4 and/or OD clutch circuits to
identify that the appropriate pressure switch
closes. If the pressure switch does not close it is
tested again. If the switch does not close the second
time, the appropriate code is set.
Theory of operation: The Transmission Control
System tests the OD and 2/4 pressure switches
when they are off (OD and 2/4 are tested in 1st
gear, OD in 2nd gear, and 2/4 in 3rd gear). The test
verifies that the switches are operational. The
PCM verifies that the switch closes when the
corresponding element is applied. If a switch fails
to close, it is retested, If it fails the second test, the
code is set.
Transmission Effects: The MIL illuminates and
the transmission system defaults to Limp-in mode.
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