Dodge 2004 Neon SRT4, Руководство по диагностике

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– Sticky accumulator seals (intermittent)
Codes P0715(56) and P0720(57)
> Failed input or output speed sensor (intermit-
tent or hard code)
> Shorted or open wiring between PCM and speed
sensor(s) (intermittent)
> PCM Connector problems and/or Speed Sensor
connector
Code P1794(58)
> Open or shorted speed sensor ground (speed
sensor ground is different from chassis ground)
> Open or shorted Temperature Sensor wiring to
TRS
> TRS - Will also set code P1799(74)
> PCM
Name of code: P0952(69) - AutoStick Sensor Cir-
cuit Low (If equipped)
When monitored: Whenever the engine is run-
ning.
Set condition:
1) The transmission shift lever is not in AutoStick
and either the upshift or downshift switch is
closed.
2) Upshift and downshift switches closed at the
same time.
Theory of operation: In the AutoStick Mode
(manual shift mode), upshifts and downshifts are
actuated manually. Shift requests are detected by
monitoring the upshift and downshift switches.
The PCM monitors the above set conditions. A set
condition will be tolerated for up to 15 seconds
before setting a code.
Transmission Effects: The OD position shift
schedule is substituted while operating in the
AutoStick gear selector position. No Limp-in mode
occurs.
Possible causes:
> Wiring or connector problems
> AutoStick switch failure
> PCM
Name of code: P1797(71) - Manual Shift Overheat
When monitored: Whenever the engine is run-
ning.
Set condition:
1. If the engine temperature exceeds 124°C
(255°F) while operating in AutoStick mode.
2. If the transmission temperature exceeds 135°C
(275°F) while in AutoStick mode
Theory of operation: Transmission and engine
temperatures are monitored during vehicle opera-
tion. If conditions occur causing the engine or
transmission to overheat, the AutoStick mode will
be canceled, and a code will be set.
Transmission Effects: The 3 position shift sched-
ule that is used in non-AutoStick applications is
substituted while operating in the AutoStick gear
selector position. No Limp-in mode occurs.
Possible causes:
> Engine overheat - refer to service manual for
diagnosis and repair
> Transmission Overheat
– Restricted transmission cooling system
– Transmission fluid overfilled
– Radiator fan not functioning properly
– Extended driving in low gear
NOTE: Strenuous driving conditions may
cause the vehicle to overheat. If the driver
operates in or initiates AutoStick with an
overheated vehicle, the code will be set.
Name of code: P0897(73) - Worn Out/Burnt Trans-
axle Fluid
When monitored: At every Fully Electronically
Modulated Converter Clutch (FEMCC) to Partial
Electronically
Modulated Converter Clutch
(PEMCC) transition miles when A/C compressor
clutch is being cycled.
Set condition: The code will be set if vehicle
shudder is detected 20 times when the A/C clutch is
cycled.
Theory of operation: While in 3rd or 4th FEMCC
and just before the A/C clutch engages, the Power-
train Control Module (PCM) requests the Trans-
mission Control System to momentarily establish
PEMCC operation. If vehicle shudder is detected
during the FEMCC to PEMCC transition, a
counter is incremented. If the count reaches 20, the
trouble code is set. The driver may then notice
harsh bumps when the A/C clutch is being cycled,
but vehicle shudder will be eliminated. After 35
OBDII (EURO STAGE III OBD) warm-up cycles or
if the code is cleared, PEMCC will be reactivated to
see if shudder is still present. If one shudder event
occurs, the code will be reset. Clearing the code and
running battery disconnect with the DRBIII
t
is the
only way to reset the shudder counter from 20 back
to zero.
Transmission Effects: This code does not cause
the transmission to go into Limp-in mode. How-
ever, once the code is set, FEMCC to PEMCC
operation before the A/C clutch engagement will be
disabled for 35 OBDII (EURO STAGE III OBD)
warm up starts.
Possible causes:
> Degraded transmission fluid
> Wheels severely out of alignment
> Internal torque converter problem
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GENERAL INFORMATION