LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2007 >> Forester X, Automatic >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> A/T Control Systems >> AT Shift Lock Control System >> Inspection >> Shift Lock Of Select Lever Cannot Be Released
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Shift Lock Of Select Lever Cannot Be Released

WIRING DIAGRAM: 

Fig 1: Shift Lock Of Select Lever Cannot Be Released - Wiring Diagram
G04993909Courtesy of SUBARU OF AMERICA, INC.
DIAGNOSIS PROCEDURE

Step Check Yes No
1 CHECK INHIBITOR SWITCH 
  1. Turn the ignition switch to ON. (Engine OFF)
  2. Move the select lever from "P" to "1" range.
 Combination meter indicator lamp and select lever "P", "R", "N", "3", "2" and "1" are correctly matched? Go to step 2.  Adjust inhibitor switch and select cable.
2 CHECK IGNITION POWER SUPPLY CIRCUIT. 
  1. Turn the ignition switch to ON. (Engine OFF)
  2. Measure the voltage between body integrated unit and chassis ground.

    Connector & terminal 

    (B281) No. 19 (+) - Chassis ground (-): 

 Is the voltage more than 9 V? Go to step 3.  Repair the open circuit harness between battery and body integrated unit, and poor contact in connector.
3 CHECK HARNESS BETWEEN THE INHIBITOR SWITCH AND THE BODY INTEGRATED UNIT. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the transmission harness and body integrated unit connector.
  3. Measure the harness resistance between the body integrated unit and chassis ground.

    Connector & terminal 

    (B280) No. 5 - Chassis ground: 

 Is the resistance less than 1 Ω? Repair the short circuit of harness between the body integrated unit and transmission connector. Go to step 4. 
4 CHECK HARNESS BETWEEN THE INHIBITOR SWITCH AND THE BODY INTEGRATED UNIT. 
Measure the resistance of harness between body integrated unit and inhibitor switch.

Connector & terminal 

(B12) No. 3 - (B281) No. 5: 

 Is the resistance more than 1 MΩ? Repair the open wire of harness between the body integrated unit and transmission connector. Go to step 5. 
5 CHECK HARNESS BETWEEN INHIBITOR SWITCH AND CHASSIS GROUND. 
Measure the harness resistance between the body integrated unit and chassis ground.

Connector & terminal 

(B12) No. 4 - Chassis ground: 

 Is the resistance less than 1 Ω? Go to step 6.  Repair the open circuit of harness between the body integrated unit and chassis ground.
6 CHECK INHIBITOR SWITCH 
  1. Move the select lever to "P" range.
  2. Measure the resistance between transmission harness connector terminals.

    Connector & terminal 

    (T3) No. 3 - No. 4: 

 Is the resistance more than 1 MΩ? Repair or replace inhibitor switch. Go to step 7. 
7 CHECK OUTPUT SIGNAL OF BODY INTEGRATED UNIT. 
  1. Connect all the connectors.
  2. Turn the ignition switch to ON.
  3. Measure the voltage between body integrated unit and chassis ground.

    Connector & terminal 

    (B281) No. 5 (+) - Chassis ground (-): 

 Is the voltage 9 -16 V? Go to step 8.  Go to step 16. 
8 CHECK STOP LIGHT SWITCH. 
Depress the brake pedal.		 Does the stop light illuminate? Go to step 9.  Check the stop light system.
9 CHECK HARNESS BETWEEN STOP LIGHT SWITCH AND AT SHIFT LOCK CONTROL MODULE. 
  1. Depress the brake pedal.
  2. Measure the voltage between body integrated unit and chassis ground.

    Connector & terminal 

    (B281) No. 9 (+) - Chassis ground (-): 

 Is the voltage more than 9 V? Go to step 10.  Repair the open or short circuit of harness between the body integrated unit and stop light switch.
10 CHECK HARNESS BETWEEN BODY INTEGRATED UNIT AND SHIFT LOCK SOLENOID. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the shift lock solenoid and body integrated unit connector.
  3. Measure the harness resistance between body integrated unit and the shift lock solenoid.

    Connector & terminal 

    (B280) No. 9 - (B117) No. 4: 

 Is the resistance more than 1 MΩ? Repair the open circuit of harness between body integrated unit and shift lock solenoid. Go to step 11. 
11 CHECK HARNESS BETWEEN BODY INTEGRATED UNIT AND SHIFT LOCK SOLENOID. 
Measure the resistance of harness between shift lock solenoid and chassis ground.

Connector & terminal 

(B280) No. 9 - Chassis ground: 

 Is the resistance less than 10 Ω? Go to step 12  . Repair the short circuit of harness between the body integrated unit and shift lock solenoid.
12 CHECK HARNESS BETWEEN SHIFT LOCK SOLENOID AND CHASSIS GROUND. 
Measure the resistance of harness between shift lock solenoid and chassis ground.

Connector & terminal 

(B117) No. 5 - Chassis ground: 

 Is the resistance less than 1 Ω? Go to step 13.  Repair open circuit of harness between shift lock solenoid and chassis ground.
13 CHECK SHIFT LOCK SOLENOID. 
Measure the resistance of the shift lock solenoid connector terminals.

Terminals 

No. 4 - No. 5: 

 Is the resistance between 20 and 40 Ω? Go to step 14.  Replace the shift lock solenoid.
14 CHECK SHIFT LOCK SOLENOID. 
Connect the battery to connector terminal of shift lock solenoid, and operate the solenoid.

Terminals 

No. 4 (+) - No. 5 (-): 

 Is the shift lock solenoid operating properly? Go to step 15.  Replace the shift lock solenoid.
15 CHECK OUTPUT SIGNAL FOR AT SHIFT LOCK CONTROL MODULE. 
  1. Turn the ignition switch to ON. (Engine OFF)
  2. Measure the voltage between body integrated unit and chassis ground.

    Connector & terminal 

    (B280) No. 9 (+) - Chassis ground (-): 

 Is the voltage more than 8.5 V? Go to step 16.  Replace the body integrated unit.
16 CHECK POOR CONTACT.  Is there poor contact in connector? Repair the poor contact. Replace the body integrated unit.
scientia non olet · About LEMON Manuals