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 Illuminates ON (Green)
on (ACC, IG) Illuminates ON (Amber) Illuminates 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

A01602UE01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT ENGINE SWITCH


    1. Remove the engine switch Click here.

      A015Z34E10

    2. Apply battery voltage between the terminals of the 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 does 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

      Battery positive (+) → Terminal 12 (INDS)

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

      		 Illuminates

      Battery positive (+) → Terminal 13 (INDW)

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

      		 Illuminates

    NG

    REPLACE ENGINE SWITCH Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (ENGINE SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND)


    1. A0162GUE11

      Disconnect the J31 switch connector.

    2. Disconnect the J55 ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J31-11 (SWIL) - J55-36 (SWIL) Always Below 1 Ω
      J31-12 (INDS) - J55-4 (INDS) Always Below 1 Ω
      J31-13 (INDW) - J55-13 (INDW) Always Below 1 Ω
      J31-5 (GND) - Body ground Always Below 1 Ω
      J31-4 (COM) - Body ground Always Below 1 Ω
      J31-11 (SWIL) or J55-36 (SWIL) - Body ground Always 10 kΩ or higher
      J31-12 (INDS) or J55-4 (INDS) - Body ground Always 10 kΩ or higher
      J31-13 (INDW) or J55-13 (INDW) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER SOURCE CONTROL ECU