KEY REMINDER WARNING SYSTEM TERMINALS OF ECU

  1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    1. Disconnect the MB and E22 main body ECU (multiplex network body ECU) connectors.

      B332798C01

      *A

      Main Body ECU (Multiplex Network Body ECU) with 1 Connector

      -

      -

      *1

      Main Body ECU (Multiplex Network Body ECU)

      -

      -

      *a

      1 Connector

      -

      -
      B332794C01

      *A

      Main Body ECU (Multiplex Network Body ECU) with 2 Connectors

      -

      -

      *1

      Main Body ECU (Multiplex Network Body ECU)

      -

      -

      *a

      2 Connectors

      -

      -

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

      Tip:

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      MB-11 (GND1) - Body ground

      -

      Ground

      Always

      Below 1 Ω

      MB-2 (FLCY) - Body ground*1

      -

      Driver door courtesy light switch input

      Driver door open

      Below 1 Ω

      MB-2 (FLCY) - Body ground*1

      -

      Driver door courtesy light switch input

      Driver door closed

      10 kΩ or higher

      E22-19 (FRCY) - Body ground*2

      V - Body ground

      Driver door courtesy light switch input

      Driver door open

      Below 1 Ω

      E22-19 (FRCY) - Body ground*2

      V - Body ground

      Driver door courtesy light switch input

      Driver door closed

      10 kΩ or higher

      E22-17 (KSW) - Body ground

      V - Body ground

      Unlock warning switch signal

      No key in ignition key cylinder

      10 kΩ or higher

      E22-17 (KSW) - Body ground

      V - Body ground

      Unlock warning switch signal

      Key in ignition key cylinder

      Below 1 Ω

      • *1: for LHD

      • *2: for RHD

      If the result is not as specified, there may be a malfunction on the wire harness side.