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

DESCRIPTION

If the power 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.

Tech Tips

When the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

WIRING DIAGRAM

A01KSVNE01

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the power 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.

  • The entry and start system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting Click here. Troubleshoot the entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

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

    Click here

  • If the entry and start system (for Start Function) is disabled through the customize function, enable the system before performing troubleshooting.

    Click here

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

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

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

Tech Tips

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

    Power Source Control

  • Power Supply Condition

  • ACC Relay Monitor

 -

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY, BODY GROUND)

    Result
    Proceed to
    OK
    NG

    1. Disconnect the E35 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the 3D and 3C instrument panel junction block assembly connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E35-4 (ACCD) - 3D-25 Always Below 1 Ω
      3C-9 - Body ground Always Below 1 Ω
      E35-4 (ACCD) or 3D-25 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    Click here

    Result
    Result Proceed to
    OK A
    NG (for LHD) B
    NG (for RHD) C

    B

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    C

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    A

  3. INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    Result
    Proceed to
    OK
    NG

    1. A01KR30C12
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECU Assembly))

      Reconnect the E35 certification ECU (smart key ECU assembly) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E35-4 (ACCD) - Body ground Power switch off → Power switch on (ACC) 1 V or less → 8.5 V or higher
      Result
      Proceed to
      OK
      NG

    OK

    CHECK RELAY CONTACT SIDE CIRCUIT

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)