LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Security And Locks - Keyless Access (W/Push Button Start) (Diagnostics) >> Diagnostics with Phenomenon >> Inspection >> Engine Does Not Start

Engine Does Not Start

CAUTION:
  • When the keyless access CM is replaced with a new unit, and the battery ground terminal is connected, it will become ignition ON. Also, if the battery is disconnected, it will resume to a condition with the battery cut off.
  • When the keyless access CM is replaced, registration of the immobilizer is required. For the relevant procedures, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume. Contact an authorized Subaru Dealership.
  1. INITIALIZE STEERING LOCK. 
    1. Shift the shift lever to parking (except for MT model), or neutral for MT model.
    2. Operate the driver's door switch ON/OFF with the ignition switch OFF.
    3. Wait for 10 seconds.
    4. Place the access key on the driver's seat.
    5. Depress the brake pedal (except for MT model) or clutch pedal (MT model), and push the push button ignition switch.

    Can the engine start?

    • Yes  : System is normal.
    • No  : Go to 2. 
  2. CHECK DTC. 

    Read the DTC of [Keyless Access with Push Button Start] using the Subaru Select Monitor. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>Diagnostic Trouble Code (DTC) .

    Is DTC detected?

  3. CHECK POWER SUPPLY SWITCHING. 
    1. Place the access key on the driver's seat.
    2. Without depressing the brake pedal (except for MT model) or clutch pedal (MT model), push the push button ignition switch.

    When the switch is operated, does it change as <IG-OFF> → <ACC-ON> → <IG-ON> → <IG-OFF>?

  4. CHECK DATA MONITOR. 
    1. Place the access key on the driver's seat.
    2. Depress the brake pedal (except for MT model) or clutch pedal (MT model), and push the push button ignition switch.
    3. Using the Subaru Select Monitor, confirm the data monitor [STSW signal monitor] of [Keyless Access with Push Button Start] when pressing the push button ignition switch. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>Data Monitor .
      NOTE: If it is difficult to confirm, press the push button ignition switch for approximately five seconds longer.

    Does the data change from OFF → ON?

    • Yes  : Go to  10.
    • No  : Go to 5. 
  5. CHECK DATA MONITOR. 

    Using the Subaru Select Monitor, check the data monitor [Shift P Signal] of [Keyless Access with Push Button Start]. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>Data Monitor .

    Is ON displayed in parking position, and OFF displayed in other positions?

    • Yes  : Go to 6. 
    • No  : Go to  11.
  6. CHECK DATA MONITOR. 

    Using the Subaru Select Monitor, check the data monitor [Stop Light Switch] of [Keyless Access with Push Button Start]. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>Data Monitor .

    Is ON displayed when brake pedal depressed, and OFF displayed when brake pedal not depressed?

    • Yes  : Go to 7. 
    • No  : Go to  13.
  7. CHECK DATA MONITOR. 

    Using the Subaru Select Monitor, check the data monitor [Neutral SW/Clutch SW] of [Keyless Access with Push Button Start]. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>Data Monitor .

    Except for MT model: is ON displayed in parking and neutral position and OFF displayed in other positions? MT model: is ON displayed when clutch pedal depressed and OFF displayed when clutch pedal not depressed?

    • Yes  : Go to 8. 
    • No  : Go to  15.
  8. CHECK STEERING LOCK. 

    Operate the push button ignition switch to perform the power supply switching and check steering lock condition during ACC-ON condition.

    Is the steering lock in unlocked condition?

  9. CHECK KEYLESS ACCESS CM. 
    1. Turn the ignition switch to OFF.
    2. Disconnect the ECM connector.
    3. Using a tester, measure the voltage between the ECM connector and chassis ground in the following procedures.
      1. Press the push button ignition switch with the brake pedal depressed (MT model: clutch pedal depressed). (Measure within 10 seconds.)
      2. Release the push button ignition switch from the condition of step  1. above.

        Connector & terminal 

        (B572) No. 13 (+) - Chassis ground (-):

    Does the value change from 1 V or less to +B-2 V or more in the step  1, and return to 1 V or less in the step  2?

  10. CHECK DATA MONITOR. 
    1. Connect the disconnected connectors.
    2. Using the Subaru Select Monitor, check the data monitor [Engine start permission request reception status] of [Keyless Access with Push Button Start]. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>Data Monitor .

    Is "Reception" displayed with ignition switch ON, and "Not yet received" displayed in other positions?

  11. CHECK "P" RANGE SWITCH. 
    1. Turn the ignition switch to OFF.
    2. Disconnect the AT shift lever connector.
    3. Using a tester, check the continuity of "P" range switch.

      Connector & terminal 

      (B116) No. 1 - (B116) No. 2:

    Does it change from continuity ←→ no continuity according to shift lever operation?

  12. CHECK HARNESS. 
    1. Turn the ignition switch to OFF.
    2. Disconnect the keyless access CM connector.
    3. Using a tester, check continuity between the keyless access CM connector and the AT select lever connector, and between the AT select lever connector and chassis ground.

      Connector & terminal 

      (B116) No. 1 - (B574) No. 25:

      (B116) No. 2 - Chassis ground:

    Is there continuity?

  13. CHECK STOP LIGHT SWITCH. 
    1. Turn the ignition switch to OFF.
    2. Disconnect the stop light switch connector.
    3. Using a tester, check continuity of the stop light switch connector.

      Connector & terminal 

      (B65) No. 1 - No. 2:

    Does it change from continuity ←→ no continuity according to brake pedal operation?

  14. CHECK HARNESS. 
    1. Turn the ignition switch to OFF.
    2. Using a tester, check continuity between the keyless access CM connector and the stop light switch connector, and between the stop light switch connector and fuse.

      Connector & terminal 

      (B572) No. 18 - (B65) No. 2:

      (B65) No. 1 - F/B fuse No. 8:

    Is there continuity?

  15. CHECK INHIBITOR SWITCH. 

    Check the inhibitor switch. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Inhibitor Switch>INSPECTION .

    Is the check result OK?

    • Yes  : Go to 16. 
    • No  : Replace the inhibitor switch.
  16. CHECK HARNESS. 
    1. Turn the ignition switch to OFF.
    2. Disconnect the inhibitor switch connector.
    3. Using a tester, check continuity between the keyless access CM connector and inhibitor switch connector.

      Connector & terminal 

      Non-turbo model 

      (B572) No. 5 - (B12) No. 16:

      (B12) No. 15 - Starter motor:

      Turbo model 

      (B572) No. 5 - (B12) No. 12:

      (B12) No. 11 - Starter motor:

    Is there continuity?

scientia non olet · About LEMON Manuals