ENTRY AND START SYSTEM Engine Switch Indicator Circuit

DESCRIPTION

Engine start conditions or system malfunctions can be checked by observing 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 Illuminates (green)
On (ACC, IG) Illuminates (amber) Illuminates (green)
Engine running OFF OFF
Steering lock not unlocked Flashes (green) for 30 seconds Flashes (green) for 30 seconds
System malfunction Flashes (amber) for 15 seconds Flashes (amber) for 15 seconds
Stop light switch with shift lever in P or N malfunction Flashes (green) for 15 seconds Flashes (green) for 15 seconds

WIRING DIAGRAM

A001FWWE01
*a Main Body ECU
*b Engine Switch

PROCEDURE


  1. INSPECT ENGINE SWITCH

    A001FIDE02
    *1 Component without harness connected: (Engine Switch)

    1. Remove the engine switch Click here.

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

      Note


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

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

      OK
      Tester Connection Condition Specified Condition
      Battery terminal (+) → Terminal 11 (SWIL) - Battery terminal (-) → Terminal 5 (GND) Always Illuminates
      Battery terminal (+) → Terminal 12 (INDS) - Battery terminal (-) → Terminal 5 (GND) Always Illuminates
      Battery terminal (+) → Terminal 13 (INDW) - Battery terminal (-) → Terminal 5 (GND) Always Illuminates

    NG

    REPLACE ENGINE SWITCH Click here

    OK

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

    A001BDOE03
    *1 Front view of wire harness connector: (to Engine Switch)
    *2 Front view of wire harness connector: (to Main Body ECU)

    1. Disconnect the L36 engine switch connector.

    2. Disconnect the L13 main body ECU connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      L36-11 (SWIL) - L13-25 (SWIL) Always Below 1 Ω
      L36-12 (INDS) - L13-15 (INDS) Always Below 1 Ω
      L36-13 (INDW) - L13-14 (INDW) Always Below 1 Ω
      L36-5 (GND) - Body ground Always Below 1 Ω
      L36-11 (SWIL) or L13-25 (SWIL) - Body ground Always 10 kΩ or higher
      L36-12 (INDS) or L13-15 (INDS) - Body ground Always 10 kΩ or higher
      L36-13 (INDW) or L13-14 (INDW) - Body ground Always 10 kΩ or higher

    OK

    REPLACE MAIN BODY ECU

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR