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DTC P0715 Input/Turbine Speed Sensor Circuit: Wiring Diagram

WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Input/Turbine Speed Sensor Wiring Diagram
G07665845Courtesy of SUBARU OF AMERICA, INC.
DIAGNOSTIC PROCEDURE CHART

Step Check Yes No
1 CHECK TORQUE CONVERTER TURBINE SPEED SENSOR. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the connector from transmission.
  3. Measure the resistance between transmission connector receptacle's terminals.

Connector & terminal 
(T4) No. 5 - No. 10: 		 Is the resistance 450 - 650 Ω? Go to step 2.  Replace the torque converter turbine speed sensor. < Ref. to TORQUE CONVERTER TURBINE SPEED SENSOR . >
2 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. 
  1. Disconnect the connector from TCM.
  2. Measure the resistance of harness between TCM connector and transmission connector.

Connector & terminal 
(B55) No. 1 - (B11) No. 5: 
(B55) No. 2 - (B11) No. 10: 		 Is the resistance less than 1 Ω? Go to step 3.  Repair the open circuit of harness between TCM and transmission connector, and poor contact of the connector.
3 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION. 
Measure the resistance of harness between TCM connector and chassis ground.
Connector & terminal 
(B55) No. 1 - Chassis ground: 
(B55) No. 2 - Chassis ground: 		 Is the resistance 1 MΩ or more? Go to step 4.  Repair the short circuit of harness between TCM and transmission connector.
4 CHECK INPUT SIGNAL FOR TCM. 
  1. Connect the connectors to TCM and transmission.
  2. Connect the Subaru Select Monitor to data link connector.
  3. Turn the ignition switch to ON.
  4. Run the Subaru Select Monitor.
  5. Start the engine.
  6. Move the select lever to "P" or "N" range.
  7. Read the data of "Turbine Revolution Speed" and "Engine Speed" using Subaru Select Monitor.
 Are the "Turbine Revolution Speed" and "Engine Speed" almost the same? Check the harnesses or connectors between TCM and transmission, and repair the defective part. Go to step 5  .
5 CHECK FOR POOR CONTACT.  Is there poor contact of torque converter turbine speed sensor circuit? Repair the poor contact. Replace the TCM. < Ref. to TRANSMISSION CONTROL MODULE (TCM) . >
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