SMART ENTRY AND START SYSTEM (for Start Function) Engine Switch Indicator Circuit

DESCRIPTION

Engine start conditions or system malfunctions can be checked by the status of the engine switch indicator light.

Engine Switch Indicator Light Condition
Power Source Mode/Condition Indicator Light Condition
Brake pedal released Brake pedal depressed, shift lever in P or N
off off Turns on (Green) (when key and vehicle IDs match)
on (ACC, IG) Turns on (amber) Turns on (green)
Engine running off off
Steering lock not unlocked Flashes (green) for 15 sec. Flashes (green) for 15 sec.
System malfunction Flashes (amber) for 15 sec. Flashes (amber) for 15 sec.

WIRING DIAGRAM

A01CE8KE07

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT ENGINE SWITCH


    1. Remove the engine switch (for 2GR-FE: Click here, for 2AZ-FE: Click here.

      A01CCX1E70

    2. Apply battery voltage between the terminals of the engine switch, and check the illumination condition of the switch.

      Note


      • If the positive (+) lead and the negative (-) lead are incorrectly connected, the engine switch indicator will not illuminate.

      • If the voltage is too low, the indicator will not illuminate.

      OK
      Measurement Condition Specified Condition

      Battery positive (+) → Terminal 11 (SWIL)

      Battery negative (-) → Terminal 4 (COM) or 5 (GND)

      		 Illuminates (Switch Illumination)

      Battery positive (+) → Terminal 12 (INDS)

      Battery negative (-) → Terminal 4 (COM) or 5 (GND)

      		 Illuminates (Green Indicator Light)

      Battery positive (+) → Terminal 13 (INDW)

      Battery negative (-) → Terminal 4 (COM) or 5 (GND)

      		 Illuminates (Amber Indicator Light)
      Text in Illustration
      *1

      Component without harness connected

      (Engine Switch)

      		 *2 Indicator Light
      *3 Illumination - -
      Result
      Result Proceed to
      OK A
      NG (for 2GR-FE) B
      NG (for 2AZ-FE) C

    B

    REPLACE ENGINE SWITCH (for 2GR-FE) Click here

    C

    REPLACE ENGINE SWITCH (for 2AZ-FE) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (ENGINE SWITCH - MAIN BODY ECU AND BODY GROUND)


    1. Disconnect the G48 connector from the main body ECU.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      G21-11 (SWIL) - G48-25 (SWIL) Always Below 1 Ω
      G21-12 (INDS) - G48-15 (INDS) Always Below 1 Ω
      G21-13 (INDW) - G48-14 (INDW) Always Below 1 Ω
      G21-5 (GND) - Body ground Always Below 1 Ω
      G21-4 (COM) - Body ground Always Below 1 Ω
      G21-11 (SWIL) or G48-25 (SWIL) - Body ground Always 10 kΩ or higher
      G21-12 (INDS) or G48-15 (INDS) - Body ground Always 10 kΩ or higher
      G21-13 (INDW) or G48-14 (INDW) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE SWITCH - MAIN BODY ECU AND BODY GROUND)

    OK

    REPLACE MAIN BODY ECU Click here