Dodge Caliber. Manual — part 1219
8.
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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AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS
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P0730-INCORRECT GEAR RATIO
For a complete wiring diagram Refer to Section 8W.
Theory of Operation
The Transmission Control Module controls the gear ratio by the use of a Step motor that transfers electrical power
to mechanical movement. The rationality is a continuous test that monitors the Step motor movement. If the Step
motor is stuck at a certain position, the estimated ratio is increased or decreased continuously by the feedback
value of the primary pulley speed difference. When the difference between the estimated and actual primary pulley
speed has reached 1000 rpm, a DTC will set.
•
When Monitored:
Ignition on, engine running with the transmission in a valid forward gear.
System voltage between 9.0 and 16.0 volts.
Accelerator Pedal Position (APP) greater than 12.5% with an engine rpm greater than 450 rpm.
Vehicle speed greater than 10 Km/h (6 mph).
Transmission fluid temperature greater than 20° C (68° F).
No active DTCs from the following:
•
Step Motor
•
Transmission Temperature Sensor
•
Transmission Range Sensor
•
Line Pressure Solenoid
•
Input or Output Speed Sensor
•
Primary or Secondary Pressure Sensor
•
Over Temperature
•
Set Condition:
If the difference between the transmission estimated pulley speed and the measured primary pulley speed is
greater than 1000 rpm (belt slipping) for the continuous period of 5.0 seconds.
Possible Causes
STEP MOTOR PERFORMANCE
SHIFT VALVE STICKING
CVT BELT SLIPPING
HYDRAULIC CIRCUIT
INTERNAL TRANSMISSION
Always perform the CVT Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT - STANDARD PROCEDURE)
Diagnostic Test
1.
REPAIR INTERNAL TRANSMISSION
This DTC indicates an internal transmission problem.
Check for the following possible causes but not limited to these:
•
Step motor
•
Shift Valve sticking
•
CVT Belt slipping
•
Hydraulic control circuit including the Valve Body
Repair
Replace or repair the CV Transmission per the Service Information. (Refer to 21 - TRANSMISSION/
TRANSAXLE/AUTOMATIC - CVT - REMOVAL)
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)
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AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS
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P0741-TORQUE CONVERTER CLUTCH CIRCUIT PERFORMANCE
Theory of Operation
The Transmission Control Module (TCM) monitors the Torque Convertor Clutch for slippage using a calculation
derived from turbine revolution (input speed) and engine rpm broadcast over the CAN C BUS. If the slip value
exceeds a predetermined value the DTC will set.
•
When Monitored:
Ignition on, engine running with the transmission in a valid forward gear.
System voltage between 9.0 and 16.0 volts.
Vehicle speed greater than 10 Km/h (6 mph).
Accelerator Pedal Position (APP) greater than 12.5%.
Engine rpm greater than 450 rpm with TCC lock-up enabled.
TCC Lock up command is ON (True).
No active DTCs from the following:
•
Step motor,
•
Line Pressure Solenoid
•
Secondary Solenoid
•
Input or Output Speed Sensor
•
Primary or Secondary Pressure Sensor
•
CAN Bus
•
Set Condition:
The DTC is detected If the Torque Convertor Clutch (TCC) slip monitored by the Transmission Control Module
(TCM) is greater than a predetermined value for the period of 30 seconds. Note: This is not an electrical fault
but a mechanical malfunction such as a control valve sticking in its bore or a TCC Solenoid hydraulic mal-
function. It takes two consecutive problem identification trips for the DTC to mature and illuminate the MIL.
Possible Causes
TORQUE CONVERTOR HYDRAULIC CIRCUIT
TORQUE CONVERTOR CLUTCH SOLENOID
TORQUE CONVERTOR CLUTCH
TRANSMISSION CONTROL MODULE
Always perform the CVT Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT - STANDARD PROCEDURE)
Diagnostic Test
1.
CHECK TO SEE IF THE DTC IS ACTIVE
With the scan tool, erase Transmission DTCs.
Start the vehicle and check Transmission Fluid Level per the Service Information and adjust as necessary.
Test drive the vehicle to a constant speed greater than 40 Km/h (25 mph) for the period of at least 30 seconds.
NOTE: This can not be performed on a hoist, actual road conditions must be present for proper results.
Did the DTC reset (one trip) during the road test?
Yes
>> Replace or repair the CV Transmission as necessary. Note the components related to the Torque Con-
verter Clutch (TCC) such as the TCC Solenoid, control valves, valve body leakage or the TCC. Refer to
the Service Information.
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)
No
>> Go To 2
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AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS
21 - 177
2.
INTERMITTENT CONDITION
The conditions necessary to set this DTC are not present at this time.
Refer to an Technical Service Bulletins that may apply.
It may be necessary to Test Drive the vehicle again trying different conditions that may cause the DTC to reset.
Were there any problems found or did the DTC reset?
Yes
>> Repair as necessary.
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)
No
>> Test Complete.
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AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS
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