LIGHTING SYSTEM TERMINALS OF ECU


  1. CHECK COWL SIDE JUNCTION BLOCK LH, MAIN BODY ECU (MULTIPLEX NET WORK BODY ECU)

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    Text in Illustration
    *1 Main Body ECU (Multiplex Network Body ECU) - -

    1. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH assembly.

    2. Disconnect the cowl side junction block LH assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2G-1 - Body ground W - Body ground Battery power supply Always 11 to 14 V
      2F-1 - Body ground W - Body ground Battery power supply Always 11 to 14 V
      2J-23 - Body ground SB - Body ground Power supply Engine switch on (IG) 11 to 14 V
      2J-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 V

    4. Reconnect the the cowl side junction block LH assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E118-27 (FRCY) - Body ground V - Body ground Front door courtesy light switch RH signal Front door RH open Below 1 Ω
      Front door RH closed 10 kΩ or higher
      E118-6 (FLCY) - Body ground V - Body ground Front door courtesy light switch LH signal Front door LH open Below 1 Ω
      Front door LH closed 10 kΩ or higher
      2J-29 - Body ground BE - Body ground Rear door courtesy light switch RH signal Rear door RH open Below 1 Ω
      Rear door RH closed 10 kΩ or higher
      2K-34 - Body ground BE - Body ground Rear door courtesy light switch LH signal Rear door LH open Below 1 Ω
      Rear door LH closed 10 kΩ or higher
      2J-16 - Body ground B - Body ground Front door unlock detection switch RH signal Front door RH unlocked Below 1 V
      Engine switch off, all doors closed and front door RH locked Pulse generation
      2J-19 - Body ground G - Body ground Front door unlock detection switch LH signal Front door LH unlocked Below 1 V
      Engine switch off, all doors closed and front door LH locked Pulse generation
      E117-2 (LSWR) - Body ground W - Body ground Rear door unlock detection switch RH signal Rear door RH unlocked Below 1 V
      Engine switch off, all doors closed and rear door RH locked Pulse generation
      2K-33 - Body ground L - Body ground Rear door unlock detection switch LH signal Rear door LH unlocked Below 1 V
      Engine switch off, all doors closed and rear door LH locked Pulse generation
      2K-31 - Body ground W - Body ground Back door courtesy switch signal Back door LH open Below 1 Ω
      Back door LH closed 10 kΩ or higher
      E117-21 (LED1) - Body ground L - Body ground Door illumination light signal Door illumination light on Below 2.2 V
      Door illumination light off 10.5 to 16 V
      MB-23 (DOMR) - Body ground - Battery save system (interior light auto cut function) signal Battery save system (interior light auto cut function) operating 11 to 14 V
      Battery save system (interior light auto cut function) not operating Below 1 V
      2J-24 - Body ground L - Body ground Interior illumination light signal Interior illumination light on Below 1 V
      Interior illumination light off 10.5 to 16 V
      2K-35 - Body ground L - Body ground Interior illumination light signal Interior illumination light on Below 1 V
      Interior illumination light off 10.5 to 16 V

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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    1. Disconnect the E151 certification ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E151-10 (+B) - Body ground P - Body ground Battery power supply Always 11 to 14 V
      E151-11 (E) - Body ground BR - Body ground Ground Always Below 1 Ω

    3. Reconnect the E151 certification ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E151-17 (SWIL) - E151-12 (AGND) R - LG Engine switch illumination operation signal Engine switch illumination on 11 to 14 V
      Engine switch illumination off Below 1 V

  3. CHECK POWER BACK DOOR UNIT ASSEMBLY (MULTIPLEX NETWORK DOOR ECU)*

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    1. Disconnect the L36 certification ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L36-8 (IG) - Body ground G - Body ground Ignition power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      L36-10 (ECUB) - Body ground R - Body ground Battery power supply Always 11 to 14 V
      L36-12 (B) - Body ground LA-B - Body ground Battery power supply Always 11 to 14 V
      L36-11 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the L36 certification ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L36-20 (FUL) - Body ground W - Body ground Back door courtesy light switch signal Back door open Below 1 V
      Back door closed 11 to 14 V

      *: w/ Power Back Door

  4. CHECK NO. 2 MULTIPLEX NETWORK BODY ECU

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    1. Disconnect the L33 and L34 ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L33-14 (BECU) - Body ground R - Body ground Battery power supply Always 11 to 14 V
      L33-13 (SIG) - Body ground B - Body ground Ignition power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      L33-6 (LSPT) - Body ground L - Body ground Inside handle illumination operation signal Inside handle illumination on 11 to 14 V
      Inside handle illumination off Below 1 V
      L33-9 (RBD1) - Body ground L - Body ground Step light LH operation signal Step light LH on 11 to 14 V
      Step light LH off Below 1 V
      L33-21 (RBD2) - Body ground L - Body ground Step light RH operation signal Step light RH on 11 to 14 V
      Step light RH off Below 1 V
      L33-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L34-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

  5. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY

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    1. Disconnect the I37, I38, I40 and I41 outer mirror control ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I38-14 (BDR) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      I38-5 (SIG) - Body ground B - Body ground IG power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      I38-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      I41-14 (BDR) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      I41-5 (SIG) - Body ground B - Body ground IG power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      I41-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the I37, I38, I40 and I41 outer mirror control ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I37-2 (LP) - I37-14 (RE1) B - R Door mirror foot light RH operation signal Door mirror foot light RH off Below 1 V
      Door mirror foot light RH on 11 to 14 V
      I40-2 (LP) - I40-14 (LE1) B - LG Door mirror foot light LH operation signal Door mirror foot light LH off Below 1 V
      Door mirror foot light LH on 11 to 14 V