Dodge Caliber. Manual — part 1223
2.
CHECK LINE PRESSURE
Approximate Engine rpm to Line pressure readings
Engine rpm
Line Pressure
Idle
750 kPa (108.8 psi) ± 2%
2.0L – 2500 to 3000 rpm
5300 - 5700 kPa (768.5 - 826.5 psi) ± 2%
2.4L – 2600 to 3100 rpm
Start the engine and warm the transmission to 50 - 80° C (122 - 174° F).
Turn the ignition off to the lock position.
Install an appropriate pressure gauge in the Line Pressure test port per the Service Information.
WARNING: The CV Transmission can generate a line pressure up to 1800 psi. Failure to use recommended
test equipment referred to by the Service Information can result in personal injury or death.
With the scan tool, erase Transmission DTCs.
WARNING: Apply the parking brake. Failure to follow these instructions can result in personal injury or
death.
With the brakes firmly applied, start the engine allow to idle and shift the transmission into Reverse, Drive and Low
while recording the scan tool Line pressure reading and the pressure gauge reading in each shift lever position.
With the brakes still firmly applied, raise the engine rpm between 2700 - 3250 rpm and shift the transmission into
Reverse, Drive and Low while recording the scan tool line pressure reading and the pressure gauge reading in each
shift lever position.
CAUTION: Do not hold the engine rpm between 2700 - 3250 rpm for more than 5 seconds in any given shift
position. If the 5 second threshold is exceeded, transmission damage can occur. Allow to idle in neutral
between shifts for at least 15 to 20 seconds to allow transmission fluid to cool.
Do the gauge readings fall into the desired pressure ranges?
Yes
>> Go To 4
No
>> Go To 3
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AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS
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3.
VERIFY PROBLEM
Possible causes to conditions detected
ENGINE
RPM
LINE PRESSURE
CONDITION DETECTED
POSSIBLE CAUSES BUT
NOT JUST LIMITED TO
THESE
Idle speed
Low for all shift lever
positions
Oil Pump Wear
Pressure Regulator Valve for
plug sticking or spring fatigue
Oil filter, oil pump, pressure
regulator valve passage oil
leak
Engine idle speed too low
Only low for a specific
position
Oil pressure leak in a
passage or component
related to the position after
the pressure is distributed by
the manual valve
High
TP or APP sensor signal
malfunction
CVT fluid temperature sensor
malfunction
Line pressure solenoid
sticking in the off state, filter
plugged, cut line
Pressure regulator valve or
plug sticking
Engine
rpm
between
2700 and
3250 rpm
Line pressure does not rise
above the line pressure at
idle
TP or APP sensor signal
malfunction
Line pressure solenoid
sticking in the on state, filter
plugged
Pressure regulator valve or
plug sticking
Transmission Control Module
(TCM)
Oil pump weak or worn
Line Pressure rises but does
not reach desired level
TP or APP sensor signal
malfunction
Line pressure solenoid
sticking in the off state, filter
plugged, cut line
Pressure regulator valve or
plug sticking
Oil pump weak or worn
Line pressure is low in only
one shift lever position
Oil pressure leak in a
passage or component
related to the position after
the pressure is distributed by
the manual valve
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AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS
PM
Use the above chart to help identify the possible cause.
NOTE: There may be other possible causes besides those listed on the above chart. Review any Service
Bulletins and refer to the Service Information for any additional possible causes that may apply.
View repair
Repair
Replace or repair the CV Transmission as necessary per the Service Information
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)
4.
CHECK THE SECONDARY PRESSURE
Turn the ignition off to the lock position.
Disconnect the pressure gauge from the Line Pressure test port and reinstall the test port plug.
Install the pressure gauge in the Secondary Pressure test port per the Service Information.
With the scan tool, erase Transmission DTCs.
WARNING: Apply the parking brake. Failure to follow these instructions can result in personal injury or
death.
With the brakes firmly applied, start the engine allow to idle and shift the transmission into Reverse, Drive and Low
while comparing the Secondary Pressure gauge reading to the scan tool Secondary Pressure reading in each shift
lever position and record your findings.
With the brakes still firmly applied, raise the engine rpm between 2700 - 3250 rpm and shift the transmission into
Reverse, Drive and Low while comparing the gauge Secondary Pressure to the scan tool Secondary Pressure in
each shift lever position and record your findings.
CAUTION: Do not hold the engine rpm between 2700 - 3250 rpm for more than 5 seconds in any given shift
position. If the 5 second threshold is exceeded, transmission damage can occur. Allow to idle in neutral
between shifts for at least 15 to 20 seconds to allow transmission fluid to cool.
Does the Secondary Pressure gauge readings match the scan tool readings in all of the above proce-
dures?
Yes
>> Replace or repair the CV Transmission as necessary per the Service Information for components related
to the Secondary Pressure Control System.
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)
No
>> Go To 5
5.
CHECK THE SECONDARY PRESSURE SENSOR
Turn the ignition off to the lock position.
Disconnect the pressure gauge from the Secondary Pressure test port
and reinstall the test port plug.
Disconnect the Transmission Solenoid/Pressure Switch Assembly har-
ness connector.
Connect a jumper wire between the (T50) Secondary Pressure Sensor
Signal circuit and the (T72) 5-volt Supply circuit in the Transmission
Solenoid/Pressure Switch Assembly harness connector.
Ignition on, engine not running.
With the scan tool read the Secondary Pressure voltage.
Is the voltage between 4.5 and 5.5 volts?
Yes
>> Replace the CVT or the Secondary Pressure Sensor (Valve
Body) per the Service Information.
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)
No
>> Go To 6
PM
AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS
21 - 193
6.
CHECK THE (T21) PRIMARY PRESSURE SENSOR SIGNAL CIRCUIT FOR HIGH RESISTANCE
Turn the ignition off to the lock position.
Disconnect the TCM C2 harness connector.
Connect a jumper wire between the B(+) and the (T21) Primary Pres-
sure Sensor Signal circuit in the Transmission Solenoid/Pressure Switch
harness connector.
Using a 12-volt test light connected to ground, check the (T21) Primary
Pressure Sensor Signal circuit in the TCM C2 harness connector.
NOTE: The test light must illuminate brightly. Compare the bright-
ness to that of a direct connection to the battery.
Does the test light illuminate brightly?
Yes
>> Using the schematics as a guide, check the Transmission
Control Module (TCM) terminals for corrosion, damage, or
terminal push out. Pay particular attention to all power and
ground circuits. Check for any Service Bulletins for possible
causes that may apply. If no problems are found, replace
the TCM per the Service Information.
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANS-
MISSION/TRANSAXLE/AUTOMATIC - CVT - STANDARD
PROCEDURE)
No
>> Repair the (T21) Primary Pressure Sensor Signal circuit for
an open (high resistance).
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANS-
MISSION/TRANSAXLE/AUTOMATIC - CVT - STANDARD
PROCEDURE)
7.
INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
Wiggle the wires while checking for shorted and open circuits.
Were there any problems found?
Yes
>> Repair as necessary.
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)
No
>> Test Complete.
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