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Home >> Subaru >> 2016 >> BRZ Limited, Automatic Trans >> Repair and Diagnosis >> Electrical >> Starter >> Entry Start System Start System (Keyless Start) >> Entry & Start System (Start Function) >> Function Inspection
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Function Inspection

  1. Operation explanation
    1. Entry ignition function (with automatic transmission):
      1. If the electrical key transmitter sub-assembly is in the vehicle interior detection area and the brake pedal is depressed, you can press the engine switch and start the engine.
      2. If the electrical key transmitter sub-assembly is in the vehicle interior detection area and the brake pedal is not depressed, you can press the engine switch to change the power mode. The power mode changes each time you press the engine switch, in the following order: OFF →ACC ON→ IG ON →OFF.
      3. In IG OFF, after you enter the vehicle interior carrying the electrical key transmitter sub-assembly, if you press the engine switch without depressing the brake pedal, the power mode switches to ACC, and the entry key indicator light in the combination meter assembly blinks green.
      4. With the engine switch turned off, after you enter the vehicle interior holding the electrical key transmitter sub-assembly in your hand, and with the shift lever put in P, if you depress the brake pedal, the entry key indicator light in the combination meter assembly will light up green.
      5. If you press the engine switch when the entry key indicator light of the combination meter assembly is lit up green, the engine will start.
    2. Changing the power mode when the electrical key transmitter sub-assembly doesn't operate properly due to radio wave interference or the battery of the electrical key transmitter sub-assembly being drained (for automatic transmission):
      1. Use the integrated mechanical key to unlock the door, hold the electrical key transmitter sub-assembly, and enter the vehicle interior.
      2. Depress the brake pedal and hold the ornament side of the electrical key transmitter sub-assembly up to the engine switch.
      3. The buzzer sounds and the vehicle turns to IG ON.
        NOTE: If the entry cancel function has been customized, the power mode changes to on (ACC).
    3. Starting the engine when the electrical key transmitter sub-assembly doesn't operate properly due to radio wave interference or the battery of the electrical key transmitter sub-assembly being drained (for automatic transmission):
      1. Use the integrated mechanical key to unlock the door, hold the electrical key transmitter sub-assembly, and enter the vehicle interior.
      2. Depress the brake pedal, move the shift lever in P, and hold the ornament side of the electrical key transmitter sub-assembly up to the engine switch.
      3. The buzzer sounds and the vehicle turns to IG ON. When the entry key indicator light of the combination meter assembly lights up green, press the engine switch while pressing the brake pedal, and start the engine.
        NOTE: If the entry cancel function has been customized, the power mode changes to on (ACC).
    4. Entry ignition function (with manual transmission):
      1. If the electrical key transmitter sub-assembly is in the vehicle interior detection area and the clutch pedal is depressed, you can press the engine switch and start the engine.
      2. If the electrical key transmitter sub-assembly is in the vehicle interior detection area and the clutch pedal is not depressed, you can press the engine switch to change the power mode. The power mode changes each time you press the engine switch, in the following order: OFF →ACC ON→ IG ON →OFF.
      3. In IG OFF, after you enter the vehicle interior carrying the electrical key transmitter sub-assembly, if you press the engine switch without depressing the clutch pedal, the power mode switches to ACC, and the entry key indicator light in the combination meter assembly blinks green.
      4. In IG OFF, after you enter the vehicle interior carrying the electrical key transmitter sub-assembly, if you depress the clutch pedal, the entry key indicator light in the combination meter assembly will light up green.
      5. If you press the engine switch when the entry key indicator light of the combination meter assembly is lit up green, the engine will start.
    5. Changing the power mode when the electrical key transmitter sub-assembly doesn't operate properly due to radio wave interference or the battery of the electrical key transmitter sub-assembly being drained (for manual transmission):
      1. Use the integrated mechanical key to unlock the door, hold the electrical key transmitter sub-assembly, and enter the vehicle interior.
      2. Depress the clutch pedal and hold the ornament side of the electrical key transmitter sub-assembly up to the engine switch.
      3. The buzzer sounds and the vehicle turns to IG ON.
        NOTE: If the entry cancel function has been customized, the power mode changes to ACC.
    6. Starting the engine when the electrical key transmitter sub-assembly doesn't operate properly due to radio wave interference or the battery of the electrical key transmitter sub-assembly being drained (for manual transmission):
      1. Use the integrated mechanical key to unlock the door, hold the electrical key transmitter sub-assembly, and enter the vehicle interior.
      2. Depress the clutch pedal and hold the ornament side of the electrical key transmitter sub-assembly up to the engine switch.
      3. The buzzer sounds and the vehicle turns to IG ON.
  2. Function inspection for the entry ignition
    1. Inspect the entry ignition function (only for automatic transmission).
      1. In IG OFF, with the shift lever in P, while carrying the electrical key transmitter sub-assembly, depress the brake pedal, and check that the entry key indicator light of the combination meter assembly lights up green. If the entry key indicator light of the combination meter assembly lights up green, press the engine switch, and check that the engine starts.
      2. Without depressing the brake pedal, after putting the vehicle in IG OFF, press the electrical key transmitter sub-assembly, and check that the power mode changes in the following way: OFF →ACC ON →IG ON →OFF. However, in IG ON, if the shift lever is in a position other than P, the power mode will not turn OFF but will turn to ACC ON.
      3. Turn off the vehicle's engine, press the engine switch, and check that it turns to IG OFF (the engine stops, and all electrical systems turn off). However, with the vehicle stopped, if the shift lever is in a position other than P, even if you press the engine switch, the power mode will not turn OFF but will turn to ACC ON. In this case, move the shift lever back into P, press the engine switch, and check that the power mode changes to OFF. After the power turns OFF, open the door and check that the steering lock operates.
      4. Inspect the operation range of the entry ignition (front floor). In one of the inspection points, place the electrical key transmitter sub-assembly of the front seat in the direction shown in the figure, and check that the engine starts.
        Fig 1: Inspecting Operation Range Of Entry Ignition (Front Floor)
        G10216302Courtesy of SUBARU OF AMERICA, INC.
        CAUTION:
        • Even when the electrical key transmitter sub-assembly is located within the key detection area inside the vehicle, it might not be detected properly if it is located on the instrument panel, inside the accessory box of the instrument panel, inside or near the front cup holder, inside the glove compartment, on the rear shelf, or on the floor.
        • If the electrical key transmitter sub-assembly is within 0.2 m {0.66 feet} from the shift lever, communication may be impossible.
        • If the electrical key transmitter sub-assembly is on the instrument panel or inside the glove compartment, the engine control system may not start.
        NOTE: Perform the inspection from both of these inspection points.
      5. Inspect the operation range of the entry ignition (rear floor). In one of the inspection points, place the electrical key transmitter sub-assembly, and check that the engine starts.
        Fig 2: Inspecting Operation Range Of Entry Ignition (Rear Floor)
        G10216303Courtesy of SUBARU OF AMERICA, INC.
        CAUTION: Even when the electrical key transmitter sub-assembly is located within the key detection area inside the vehicle, it might not be detected properly if it is located on the instrument panel, inside the accessory box of the instrument panel, inside or near the front cup holder, inside the glove compartment, on the rear shelf, or on the floor.
        NOTE: Perform the inspection from both of these inspection points.
    2. Check the entry ignition function (only for manual transmission).
      1. In IG OFF, while carrying the electrical key transmitter sub-assembly, depress the clutch pedal, and check that the entry key indicator light of the combination meter assembly lights up green. If the entry key indicator light of the combination meter assembly lights up green, press the engine switch, and check that the engine starts.
      2. Without depressing the clutch pedal, after putting the vehicle in IG OFF, press the electrical key transmitter sub-assembly, and check that the power mode changes in the following way: OFF →ACC ON →IG ON →OFF.
      3. Turn off the vehicle's engine, press the engine switch, and check that it turns to IG OFF (the engine stops, and all electrical systems turn off). Open the door and check that the steering lock operates.
      4. Inspect the operation range of the entry ignition (front floor). In one of the inspection points, place the electrical key transmitter sub-assembly of the front seat in the direction shown in the figure, and check that the engine starts.
        Fig 3: Inspecting Operation Range Of Entry Ignition (Front Floor)
        G10216304Courtesy of SUBARU OF AMERICA, INC.
        CAUTION:
        • Even when the electrical key transmitter sub-assembly is located within the key detection area inside the vehicle, it might not be detected properly if it is located on the instrument panel, inside the accessory box of the instrument panel, inside or near the front cup holder, inside the glove compartment, on the rear shelf, or on the floor.
        • If the electrical key transmitter sub-assembly is within 0.2 m {0.66 feet} from the shift lever, communication may be impossible.
        • If the electrical key transmitter sub-assembly is on the instrument panel or inside the glove compartment, the engine control system may not start.
        NOTE: Perform the inspection from both of these inspection points.
        CAUTION: If the electrical key transmitter sub-assembly is on the instrument panel or inside the glove compartment, the engine control system may not start.
      5. Inspect the operation range of the entry ignition (rear floor). In one of the inspection points, place the electrical key transmitter sub-assembly, and check that the engine starts.
        Fig 4: Inspecting Operation Range Of Entry Ignition (Rear Floor)
        G10216305Courtesy of SUBARU OF AMERICA, INC.
        CAUTION: Even when the electrical key transmitter sub-assembly is located within the key detection area inside the vehicle, it might not be detected properly if it is located on the instrument panel, inside the accessory box of the instrument panel, inside or near the front cup holder, inside the glove compartment, on the rear shelf, or on the floor.
        NOTE: Perform the inspection from both of these inspection points.
  3. Check the power mode change function
    1. Check the engine switch.
      1. With automatic transmission: check that the power mode changes based on the following table.
        BRAKE PEDAL SHIFT POSITION

        Shift position Brake pedal Power mode when the engine switch is pressed
        P Don't step on Off →On (ACC) →On (IG) →off
        P Don't step on Engine operation →off
        P Don't step on On (ACC) (1) →off
        P Step on Off →The engine starts.
        P Step on On (ACC) →The engine starts.
        P Step on On (IG) →The engine starts.
        P Step On Engine operation →off
        P Step on On (ACC) (1) →off
        N Don't step on Off →On (ACC) →On (IG) (After the power mode changed to On [IG], each time you press the engine switch, the power mode switches between On [IG] and On [ACC].)
        N Don't step on Engine operating →On (ACC)
        N Step on Off →The engine starts. (2)
        N Step on On (ACC) →The engine starts. (2)
        N Step on On (IG) →The engine starts. (2)
        N Step on Engine operating →On (ACC)
        The shift lever is not in P or in N. Don't step on Off →On (ACC) →On (IG) (After the power mode changed to On [IG], each time you press the engine switch, the power mode switches between On [IG] and On [ACC].)
        The shift lever is not in P or in N. Don't step on Engine operating →On (ACC)
        The shift lever is not in P or in N. Step on Off →On (IG)
        The shift lever is not in P or in N. Step on On (ACC) →On (IG)
        The shift lever is not in P or in N. Step on Engine operating →On (ACC)
        NOTE:
        (1) This situation only applies to cases where the power mode changed from On (IG) to On (ACC).
        (2) Only in cases when the steering lock was unlocked.
    2. With manual transmission:

      Check that the power mode changes based on the following table.

      CLUTCH PEDAL POSITION

      Clutch pedal Power mode when the engine switch is pressed
      Don't step on Off →On (ACC) →On (IG) →off
      Don't step on Engine operation →off
      Step on Off →The engine starts.
      Step on On (ACC) →The engine starts.
      Step on On (IG) →The engine starts.
      Step on Engine operation →off
  4. Check the display for the power mode change
    1. Check the entry key indicator.

      Indicator unit inspection

      INDICATOR UNIT INSPECTION DESCRIPTION

      Engine switch Indicator
      Off
      (Excluding conditions where the engine could start)      		 Off
      On (ACC)
      (Excluding conditions where the engine could start(1))      		 Blinking green
      On (IG)
      (Excluding conditions where the engine could start(1))      		 Blinking green
      Conditions where the engine could start and shift P Lit up green
      After the engine starts Off
      NOTE:
      (1) Excluding conditions where the engine could start, as following:
      Fig 5: Checking Entry Key Indicator
      G10216306Courtesy of SUBARU OF AMERICA, INC.

      With automatic transmission

      AUTOMATIC TRANSMISSION CONDITION

      The Engine Starts If The Engine Switch Is Pressed In The Following Conditions.
      Condition 1 All conditions are met:
      • The power mode switched from on (IG) to on (ACC).
      • Key confirmation* or the engine immobilizer is unset (the engine switch is on (ACC) or on (IG)).
      • The shift lever is in N (steering lock is unlocked).
      • The stop light switch is on.
      Condition 2 All conditions are met:
      • The power mode is not switched from on (IG) to on (ACC).
      • Key confirmation* or the engine immobilizer is unset (the engine switch is on (ACC) or on (IG)).
      • The shift lever is in P or in N.
      • The stop light switch is on.

      With manual transmission

      MANUAL TRANSMISSION CONDITION

      The Engine Starts If The Engine Switch Is Pressed When The Following Conditions Are Met.
      Condition 1 All conditions are met:
      • Key confirmation(1) or the engine switch is on (ACC) or on (IG).
      • The clutch start switch is on.
      (1) When the electrical key transmitter sub-assembly is in the vehicle interior, the ID code sent as a result of the communication between the electrical key transmitter sub-assembly and the collation ECM (smart key ECM assembly) and the ID code calculated by the collation ECM (smart key ECM assembly) are compared. If these ID codes match, the vehicle recognizes that the electrical key transmitter sub-assembly is in the vehicle interior.
      1. List of indicator conditions
        Indicator Vehicle status
        Off Any condition is met:
        1. The engine is turning.
        2. With the engine switch off, the vehicle is in a state where even if the engine switch is pressed, the engine won't start.
        Lit up green All the following conditions are met, the vehicle is in a state where if the engine switch is pressed, the engine will start.
        The electrical key transmitter sub-assembly is in the vehicle interior, the stop light switch assembly (1) or the clutch start switch assembly (2) is on, and the shift lever is in P (1).
        Blinking green
        (Blinking slowly)        		 With the engine switch in on (ACC) or on (IG), the vehicle is in a state where even if the engine switch is pressed, the engine won't start.
        Blinking green
        (Blinking quickly)        		 If the power is on, or the engine is started, the steering wheel is unlocked (steering lock is stuck).
        When the steering wheel is unlocked, the indicator begins blinking.
        When 30 seconds have passed since the blinking began, if the power is on, or if the engine was started again, the indicator stops blinking.
        Blinking yellow A defect is found in the steering lock ECM.
        If it is determined that there is a defect in the steering lock ECM or in the collation ECM (smart key ECM assembly), the indicator begins blinking.
        If the ECM returns to its normal status, or if 15 seconds have passed since the blinking started, the indicator stops blinking.
        (1) With automatic transmission
        (2) With manual transmission
        NOTE: If the shift lever is in the N position, the engine can start only when the steering wheel is unlocked. (With automatic transmission)
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