Dodge Dakota (ND). Manual — part 1012
P0711-TRANSMISSION TEMPERATURE SENSOR PERFORMANCE
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AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
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P0711-TRANSMISSION TEMPERATURE SENSOR PERFORMANCE (CONTINUED)
For the Transmission circuit diagram (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE -
SCHEMATICS AND DIAGRAMS) .
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Continuously with the ignition on and engine running.
•
Set Condition:
This DTC will set when the desired transmission temperature does not reach a normal operating temperature
within a given time frame. Time is variable due to ambient temperature. Approximate times are starting tem-
perature to warm up time: (-40° F / -40° C - 35 min) (-20° F / -28° C - 25 min) (20° F / -6.6° C - 20 min) (60°
F / 15.5 ° C - 10 min)
Possible Causes
RELATED DTC’S PRESENT
TRANSMISSION TEMPERATURE SENSOR
POWERTRAIN CONTROL MODULE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - DIAGNOSIS AND TESTING).
Theory of Operation
The Transmission Temperature Sensor is a variable resistor that changes with temperature, or otherwise known as
a thermister. The temperature of the transmission fluid can affect a variety of electronically controlled transmission
operations such as shift quality, torque converter lock-up, and when and/or if certain OBDII or system self-diagnostic
test are performed. The Powertrain Control Module (PCM) substitutes a calculated transmission temperature value
if a fault is detected in the Transmission Temperature Sensor circuit.
Diagnostic Test
1.
DETERMINE IF RELATED DTC’S ARE PRESENT
With the scan tool, check Transmission DTC’s.
Are there any other related Transmission Temperature Sensor DTCs present?
Yes
>> Refer to the Transmission category and perform the appropriate symptom.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Go To 2
2.
CHECK TO SEE IF DTC IS CURRENT
With the scan tool, Check the STARTS SINCE SET counter for P0711.
NOTE: This counter only applies to the last DTC set.
Is the STARTS SINCE SET counter 2 or less?
Yes
>> Go To 3
No
>> Go To 4
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AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
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P0711-TRANSMISSION TEMPERATURE SENSOR PERFORMANCE (CONTINUED)
3.
TRANSMISSION TEMPERATURE SENSOR
Turn the ignition off to the lock position.
Remove the Starter Relay.
NOTE: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable the
starter.
Install the Transmission Simulator, Miller tool #8333.
NOTE: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
With the Transmission Simulator, turn the Input/Output switch to OFF.
With the scan tool, monitor the TRANS TEMP VOLTS while turning the Thermistor Voltage switch to all three posi-
tions on the Transmission Simulator.
Compare the scan tool readings to the voltage readings listed on the Transmission Simulator.
Do the readings on the scan tool match the Transmission Simulator readings ± 0.2 volts?
Yes
>> Replace Transmission Solenoid/TRS Assembly per the Service Information.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion,
damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems
are found, replace the PCM per the Service Information. With the scan tool, perform QUICK LEARN.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
4.
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.
With the scan tool, check the DTC EVENT DATA to help identify the conditions in which the DTC was set.
Were there any problems found?
Yes
>> Repair as necessary.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Test Complete.
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AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
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P0712-TRANSMISSION TEMPERATURE SENSOR LOW
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AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
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