ENTRY AND START SYSTEM(for Start Function) Power Source Mode does not Change to ON (IG)

DESCRIPTION

If the engine switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode.

Related Data List and Active Test Items
Problem Symptom Data List and Active Test
Power source mode does not change to on (IG) but does change to on (ACC)

    Power Source Control

  • Power Supply Condition

  • IG Relay Monitor (Inside)

  • IG Relay Monitor (Outside)

WIRING DIAGRAM

B001G99E01

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

  • Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart.

  • If the entry and start system (for Start Function) has been canceled, enable the system before performing troubleshooting.

    Click here

  • Inspect the fuses of circuits related to this system before performing the following procedure.

  • Before replacing the certification ECU (smart key ECU assembly), refer to the Service Bulletin.

  • After completing repairs, confirm that the problem does not recur.

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE


  1. CHECK FOR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Entry&Start, Power Source Control / Trouble Codes.

    5. Check for DTCs.

      Click here

      Result
      Result Proceed to
      DTCs are not output A
      Entry and start system (for Start Function) DTCs are output B

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. B001I4CC01
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G213-3 (IG1D) - Body ground Engine switch on (ACC) → Engine switch on (IG) 1 V or less → 8.5 V or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

  3. CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY), POWER SUPPLY AND BODY GROUND)


    1. Disconnect the G213 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the 2K, 2O and 2N driver side junction block assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G213-3 (IG1D) - 2O-22 Always Below 1 Ω
      2N-1 - Body ground Always Below 1 Ω
      G213-3 (IG1D) or 2O-22 - Body ground Always 10 kΩ or higher

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      2K-1 - Body ground Always 11 to 14 V

    5. Reconnect the G213 certification ECU (smart key ECU assembly) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY (IG NO. 1, IG NO. 3, IG NO. 4 AND IG NO. 5 RELAY)


    1. Remove the driver side junction block assembly.

      Click here

    2. Reconnect the all driver side junction block assembly connectors.

      B001GIDC01
      *a

      Component with harness connected

      (Driver Side Junction Block Assembly)

      		 - -

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      2M-13 - Body ground Engine switch on (IG) 9 to 14 V
      2O-12 - Body ground Engine switch on (IG) 9 to 14 V
      2N-23 - Body ground Engine switch on (IG) 9 to 14 V
      2M-6 - Body ground Engine switch on (IG) 9 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY), POWER SUPPLY AND BODY GROUND)


    1. Disconnect the G213 certification ECU (smart Key ECU assembly) connector.

    2. Disconnect the 1V, 1W and 1S engine room relay block connectors.

    3. Disconnect the 2O driver side junction block assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G213-3 (IG1D) - 1V-2 Always Below 1 Ω
      1W-4 - Body ground Always Below 1 Ω
      G213-3 (IG1D) or 1V-2 - Body ground Always 10 kΩ or higher

    5. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      1S-1 - Body ground Always 11 to 14 V

    6. Reconnect the G213 certification ECU (smart Key ECU assembly) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK ENGINE ROOM RELAY BLOCK (IG2 RELAY)


    1. Reconnect the all engine room relay block connectors.

      B001E08C01
      *a

      Component with harness connected

      (Engine Room Relay Block)

      		 - -

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      1V-1 - Body ground Engine switch on (IG) 9 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY