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

DESCRIPTION

Engine switch condition (power source mode) 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 (for A/T)

Clutch pedal released (for M/T)

 Brake pedal depressed, shift lever in P or N (for A/T) Clutch pedal depressed (for M/T)
Off Off Illuminates (Green) Illuminates (Green)
On (ACC, IG) Illuminates (Amber) Illuminates (Green) Illuminates (Green)
Engine running Off Off Off
Steering lock not unlocked Flashes (Green) for 30 sec. Flashes (Green) for 30 sec. Flashes (Green) for 30 sec.
System malfunction Flashes (Amber) for 15 sec. Flashes (Amber) for 15 sec. Flashes (Amber) for 15 sec.
Clutch start switch malfunction (for M/T) Flashes (Green) for 15 sec. Flashes (Green) for 15 sec. Flashes (Green) for 15 sec.

WIRING DIAGRAM

A01X1ETE01
*a Main Body ECU (Cowl Side Junction Block LH)
*b Engine Switch

PROCEDURE


  1. INSPECT ENGINE SWITCH

    A01X8TME05
    *1 Component without harness connected: (Engine Switch)

    1. Disconnect the E18 engine switch connector.

    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
      Measurement Condition Condition Specified Condition
      Battery terminal (+) → Terminal 11 (SWIL) - Battery terminal (-) → Terminal 5 (GND) Battery voltage is applied to the terminals Illuminates
      Battery terminal (+) → Terminal 12 (INDS) - Battery terminal (-) → Terminal 5 (GND)
      Battery terminal (+) → Terminal 13 (INDW) - Battery terminal (-) → Terminal 5 (GND)
      Result
      Result Proceed to
      Illuminates A
      Does not illuminate (for 1GR-FE) B
      Does not illuminate (for 1UR-FE) C
      Does not illuminate (for 3UR-FE) D
      Does not illuminate (for 1VD-FTV) E

    B

    REPLACE ENGINE SWITCH Click here

    C

    REPLACE ENGINE SWITCH Click here

    D

    REPLACE ENGINE SWITCH Click here

    E

    REPLACE ENGINE SWITCH Click here

    A

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

    A01X18IE02
    *1 Front view of wire harness connector: (to Main Body ECU)
    *2 Front view of wire harness connector: (to Engine Switch)

    1. Disconnect the E1 main body ECU connector.

    2. Disconnect the E18 engine switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E1-25 (SWIL) - E18-11 (SWIL) Always Below 1 Ω
      E1-15 (INDS) - E18-12 (INDS) Always Below 1 Ω
      E1-14 (INDW) - E18-13 (INDW) Always Below 1 Ω
      E18-5 (GND) - Body ground Always Below 1 Ω
      E1-25 (SWIL) or E18-11 (SWIL) - Body ground Always 10 kΩ or higher
      E1-15 (INDS) or E18-12 (INDS) - Body ground Always 10 kΩ or higher
      E1-14 (INDW) or E18-13 (INDW) - Body ground Always 10 kΩ or higher

    OK

    REPLACE MAIN BODY ECU

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR