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Diagnostic Procedure

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK ENGINE SPEED SIGNAL. 
  1. Idle the engine.
  2. Read the data of «Engine Speed» using Subaru Select Monitor.
 Does the value of «Engine Speed» almost match the value of the tachometer located in the combination meter? Go to step 2  . Check the engine speed signal circuit.
2 CHECK AT TURBINE REVOLUTION SPEED SENSOR CIRCUIT. 
Perform the diagnosis according to DTC P0715. < Refer to DTC P0715 INPUT/TURBINE SPEED SENSOR CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >		 Is there any trouble? Check the torque converter turbine speed sensor circuit. Go to step 3  .
3 CHECK AT VEHICLE SPEED SENSOR CIRCUIT. 
Perform the diagnosis according to DTC P0720. < Refer to DTC P0720 OUTPUT SPEED SENSOR CIRCUIT , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >		 Is there any trouble? Check the harness of the front vehicle speed sensor circuit, and repair the defective part. There are malfunctions in TCM, TCM connector poor contact, or transmission assembly mechanical malfunction.
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