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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Manual Transmission - TREMEC 6-Speed) >> Diagnostic Information and Procedures >> DTC P0713: Transmission Fluid Temperature (TFT) Sensor Circuit High Input >> Test Description

Test Description

WARNING: This page is about a different variant/trim than selected.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  This step determines if the malfunction is present.
  2. 3:  Using the Freeze Frame/Failure Records data may aid in locating an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame/Failure Records data can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can also help determine how many ignition cycles the diagnostic reported a pass and/or a fail. Operate the vehicle within the same freeze frame conditions, such as RPM, load, vehicle speed, temperature, that you observed. This will isolate when the DTC failed.
  3. 4:  A TFT above 139°C (282°F) indicates that the PCM and TFT sensor wiring is functioning correctly.
  4. 5:  A TFT above 139°C (282°F) indicates the PCM and TFT sensor signal circuit is functioning correctly.
  5. 6:  Disconnecting the PCM allows using the DMM in order to test continuity of the circuits. This aids in locating an open or a shorted circuit.
  6. 8:  Disconnecting the PCM allows using the DMM in order to test continuity of the circuits. This aids in locating an open or a shorted circuit.
  7. 11:  Inspect for proper terminal tension/connections at the PCM harness before replacing the PCM.
DTC P0713

Step Action Values Yes No
1 Did you perform the Diagnostic System Check - Engine Controls? - Go to Step 2  Go to Diagnostic System Check - Engine Controls in Engine Controls - 5.7L
2 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Monitor the TFT sensor display on the Engine 3 Data List of the scan tool.
Is the TFT sensor below the specified value?		 -39°C (-38°F) Go to Step 4  Go to Step 3 
3 
  1. Turn ON the ignition, with the engine OFF.
  2. Review the Freeze Frame/Failure Records data for this DTC and observe the parameters.
  3. Turn OFF the ignition for 15 seconds.
  4. Start the engine.
  5. Operate the vehicle within the conditions required for this diagnostic to run, and as close to the conditions recorded in the Freeze Frame/Failure Records as possible. Special operating conditions that you need to meet before the PCM will run this diagnostic, where applicable, are listed in Conditions for Running the DTC.
  6. Select the Diagnostic Trouble Code (DTC) option, the Specific DTC option, then enter the DTC number using the scan tool.
Does the scan tool indicate that this diagnostic failed this ignition?		 - Go to Step 4  Go to Diagnostic Aids
4 
  1. Disconnect the TFT sensor electrical connector.
  2. Connect a 3-amp fused jumper wire between the signal circuit of the TFT sensor and the low reference circuit of the TFT sensor.
  3. Observe the Transmission Fluid Temperature parameter on the scan tool.
Is the TFT sensor above the specified value?		 150°C (284°F) Go to Step 9  Go to Step 5 
5  Connect a 3-amp fused jumper wire between the signal circuit of the TFT sensor to ground.
Is the TFT sensor at the specified value?		 150°C (284°F) Go to Step 8  Go to Step 6 
6 
  1. Turn OFF the ignition.
  2. Disconnect the PCM connector C2.
  3. Test the TFT sensor signal circuit for an open. Refer to Testing for Continuity in Wiring Systems.
Is the TFT sensor signal circuit open?		 - Go to Step 7  Go to Step 11 
7 Repair the TFT sensor signal circuit. Refer to Wiring Repairs in Wiring Systems.
Is the action complete?		 - Go to Step 14  -
8 
  1. Turn OFF the ignition.
  2. Disconnect the PCM connector C1.
  3. Test the TFT sensor ground circuit for an open. Refer to Circuit Testing in Wiring Systems.
Is the TFT sensor ground circuit open?		 - Go to Step 10  Go to Step 11 
9 Replace the TFT sensor. Refer to Transmission Fluid Temperature (TFT) Sensor Replacement .
Is the action complete?		 - Go to Step 14  -
10 Repair the TFT sensor ground circuit. Refer to Wiring Repairs in Wiring Systems.
Is the action complete?		 - Go to Step 14  -
11  Test for a short to voltage on the signal circuit. Refer to Testing for a Short to Voltage and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 14  Go to Step 12 
12 Inspect for poor connections at the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Repairing Connector Terminals in Wiring Systems.
Did find and correct the condition?		 - Go to Step 14  Go to Step 13 
13 Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement in Engine Controls - 5.7L.
Is the action complete?		 - Go to Step 14  -
14 Perform the following procedure in order to verify the repair:
  1. Select DTC.
  2. Select Clear Info.
  3. Operate the vehicle under the following conditions:
    • Turn ON the ignition, with the engine OFF.
    • The Trans. Fluid Temp. must be greater than -40°C (-40°F) for 6 seconds.
  4. Select Specific DTC.
  5. Enter DTC P0713.

Has the test run and passed?		 - Go to Step 15  Go to Step 2 
15 With the scan tool, observe the stored information, capture info and DTC info.
Does the scan tool display any DTCs that you have not diagnosed?		 - Go to Diagnostic Trouble Code (DTC) List in Engine Controls - 5.7L System OK
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