LIGHTING SYSTEM TERMINALS OF ECU


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

    A01NFY3E01

    1. Disconnect the 2D, 2F, 2K and F14 instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2A-17 - Body ground GR - Body ground ACC power supply Power switch on (ACC) 11 to 14 V
      Power switch off Below 1 V
      2A-20 - Body ground G - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      2F-40 (BECU) - Body ground G - Body ground Battery power supply Always 11 to 14 V
      2K-1 - Body ground B - Body ground Battery power supply Always 11 to 14 V

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

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2D-6 (GND1) - Body ground BR - Body ground Ground Always Below 1 Ω
      F14-3 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    4. Reconnect the 2D, 2F, 2K and F14 instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.

    5. Measure the voltage and check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2D-11 (FRCL) - Body ground L - Body ground Front courtesy light RH drive output Front door RH closed 11 to 14 V
      Front door RH open Below 1 V
      2D-12 (ILE) - Body ground LG - Body ground Footwell lights drive output Footwell lights off 11 to 14 V
      Footwell lights on (100% brightness of light on state) Below 1 V
      Footwell lights on (Illuminate in light adjustment state) Pulse generation
      2D-13 (ILE) - Body ground G - Body ground Interior lights drive output Interior lights off 11 to 14 V
      Interior lights on (100% brightness of light on state) Below 1 V
      Interior lights on (Illuminate in light adjustment state) Pulse generation
      2D-26 (FRCY) - Body ground L - Body ground Front door courtesy light switch RH input Front door RH open Below 1 V
      Front door RH closed 11 to 14 V
      2H-23 (ILE) - Body ground L - Body ground Scuff plate light LH drive output Scuff plate light LH off 11 to 14 V
      Scuff plate light LH on (100% brightness of light on state) Below 1 V
      Scuff plate light LH on (Illuminate in light adjustment state) Pulse generation
      2H-24 (ILE) - Body ground LG - Body ground Scuff plate light RH drive output Scuff plate light RH on (100% brightness of light on state) Below 1 V
      Scuff plate light RH on (Illuminate in light adjustment state) Pulse generation
      Scuff plate light RH off 11 to 14 V
      2H-26 (FLCY) - Body ground B - Body ground Front door courtesy light switch LH input Front door LH open Below 1 V
      Front door LH closed 11 to 14 V
      2H-27 (LSWL) - Body ground Y - Body ground Rear door unlock detection switch LH input Rear door LH locked Pulse generation
      Rear door LH unlocked Below 1 V
      F12-1 (FLCL) - Body ground SB - Body ground Front courtesy light LH drive output Front door LH closed 11 to 14 V
      Front door LH open Below 1 V
      F12-3 (LCTY) - Body ground L - Body ground Rear door courtesy light switch LH input Rear door LH open Below 1 V
      Rear door LH closed 11 to 14 V
      F12-4 (LCYL) - Body ground V - Body ground Rear courtesy light LH drive output Front door LH closed 11 to 14 V
      Front door LH open Below 1 V
      F12-5 (CSPT) - Body ground LG - Body ground Center console spot light drive output Power switch off 11 to 14 V
      Power switch on (IG or ACC) Below 1 V
      F13-6 (RCTY) - Body ground GR - Body ground Rear door courtesy light switch RH input Rear door RH open Below 1 V
      Rear door RH closed 11 to 14 V
      F13-7 (LSFL) - Body ground P - Body ground Front door unlock detection switch LH input Front door LH locked Pulse generation
      Front door LH unlocked Below 1 V
      F13-18 (LSFR) - Body ground SB - Body ground Front door unlock detection RH switch input Front door RH locked Pulse generation
      Front door RH unlocked Below 1 V
      F13-19 (BCTY) - Body ground R - Body ground Back door courtesy light switch input Back door open Below 1 V
      Back door closed 11 to 14 V
      F14-1 (RCYL) - Body ground R - Body ground Rear courtesy light RH drive output Front door RH closed 11 to 14 V
      Front door RH open Below 1 V
      F14-2 (LSWR) - Body ground B - Body ground Rear door unlock detection switch RH input Rear door RH locked Pulse generation
      Rear door RH unlocked Below 1 V
      F14-25 (DMDR) - Body ground GR - Body ground Interior light door switch input Interior light door switch pushed Pulse generation
      Interior light door switch not pushed Below 1 V
      F14-26 (DMON) - Body ground G - Body ground Interior light on/off switch input Interior light on/off switch not pushed Pulse generation
      Interior light on/off switch pushed Below 1 V

      If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may have a malfunction.

  2. CHECK POWER BACK DOOR UNIT ASSEMBLY (POWER BACK DOOR ECU)

    A01NHK5E16

    1. Disconnect the P33 ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      P33-11 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      P33-8 (IG) - Body ground SB - Body ground IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      P33-10 (ECUB) - Body ground BR - Body ground Battery power supply Always 11 to 14 V
      P33-12 (B) - Body ground Y - Body ground Battery power supply Always 11 to 14 V

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

    4. Reconnect the P33 ECU connector.

    5. Initialize the power back door system Click here.

    6. Measure the voltage and check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      P33-3 (CTYO) - Body ground R - Body ground Luggage compartment light drive output Luggage compartment lights on Below 1 V
      Luggage compartment lights off 11 to 14 V
      P33-20 (FUL) - Body ground P - Body ground Back door courtesy switch signal input Back door open Below 1 V
      Back door closed Pulse generation

      If the result is not as specified, the ECU may have a malfunction.

  3. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. Disconnect the F58 certification ECU (smart key ECU assembly) connector.

      A01NFU2E05

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F58-1 (+B) - Body ground LG - Body ground +B power supply Always 11 to 14 V

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

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F58-15 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    4. Reconnect the F58 certification ECU (smart key ECU assembly) connector.

    5. Measure the voltage and check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F58-11 (SWIL) - Body ground G - Body ground Power switch illumination drive output Power switch illumination on 11 to 14 V or pulse generation
      Power switch illumination off Below 1 V

      If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.