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HOMESERVICE MANUALSSUBARU2016LEGACY 2.5IREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSCONTINUOUSLY VARIABLE TRANSAXLE (CVT) (DIAGNOSTICS)DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)DTC P0951 AUTO SHIFT MANUAL CONTROL CIRCUIT RANGE/PERFORMANCEWIRING DIAGRAM
2016 Subaru Legacy 2.5i

DTC P0951 Auto Shift Manual Control Circuit Range/Performance: Wiring Diagram

2016 Subaru Legacy 2.5iSECTION Wiring Diagram
  • ENGINE TYPE FB
    NOTE: For the coupling connector, refer to "WIRING SYSTEM".

    CVT control system < Ref. to appropriate wiring diagram in SYSTEM WIRING DIAGRAM article. >

    Fig 1: CVT Control System - Wiring Diagram
    G10314065Courtesy of SUBARU OF AMERICA, INC.
  • ENGINE TYPE EZ
    NOTE: For the coupling connector, refer to "WIRING SYSTEM".

    CVT control system < Ref. to appropriate wiring diagram in SYSTEM WIRING DIAGRAM article. >

    Fig 2: CVT Control System - Wiring Diagram
    G10314066Courtesy of SUBARU OF AMERICA, INC.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK HARNESS. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the manual mode switch connector.
  3. Measure the resistance between manual mode switch connector and chassis ground.

    Connector & terminal 

    (i44) No. 8 - Chassis ground: 

 Is the resistance less than 1 Ω? Go to step 2  . Repair the open circuit of harness.
2 CHECK MANUAL MODE SWITCH. 
Measure the resistance between manual mode switch terminals.
Connector & terminal 
No. 7 - No. 8: 		 Is the resistance 1 MΩ or more? Go to step 3  . Replace the select lever assembly. < Ref. to SELECT LEVER . >
3 CHECK MANUAL MODE SWITCH. 
  1. Shift the select lever to manual mode.
  2. Measure the resistance between manual mode switch terminals.

    Connector & terminal 

    No. 7 - No. 8: 

 Is the resistance less than 1 Ω? Go to step 4  . Replace the select lever assembly. < Ref. to SELECT LEVER . >
4 CHECK HARNESS. 
  1. Disconnect the TCM connector.
  2. Measure the resistance between TCM connector and manual mode switch connector.

    Connector & terminal 

    ENGINE TYPE FB 

    (T10) No. 20 - (i44) No. 7: 

    ENGINE TYPE EZ 

    (B54) No. 20 - (i44) No. 7: 

 Is the resistance less than 1 Ω? Go to step 5  . Repair the open circuit of harness or poor contact of connector.
5 CHECK HARNESS. 
Measure the resistance between manual mode switch connector and chassis ground.
Connector & terminal 
(i44) No. 7 - Chassis ground: 		 Is the resistance 1 MΩ or more? Go to step 6  . Repair the short circuit of harness.
6 CHECK INPUT SIGNAL FOR TCM. 
  1. Connect the TCM and manual mode switch connector.
  2. Turn the ignition switch to ON.
  3. Set the select lever to "D" range.
  4. Read the data of «Tiptronic Mode Switch» using Subaru Select Monitor.
 Does the value of «Tiptronic Mode Switch» change to "ON" with select lever in manual mode, and "OFF" with select lever in other than manual mode? Current condition is normal. Go to step 7  .
7 CHECK FOR POOR CONTACT.  Is there poor contact of the manual mode switch circuit? Repair the poor contact. Replace the TCM. < Ref. to TRANSMISSION CONTROL MODULE (TCM) . > < Ref. to TRANSMISSION CONTROL MODULE (TCM) . >
RENDER: 1.0x

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