WIRELESS DOOR LOCK CONTROL SYSTEM TERMINALS OF ECU


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


    1. Disconnect the MB and L8 main body ECU (multiplex network body ECU) connector.

      A004118E31
      Text in Illustration
      *A for LHD *B for RHD

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

      Tech Tips

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      MB-11 (GND1) - Body ground - Ground Always Below 1 Ω
      L8-3 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      MB-30 (BECU) - Body ground - Auxiliary battery power supply Power switch off 11 to 14 V
      MB-29 (ACC) - Body ground - ACC power supply Power switch on (ACC) 11 to 14 V
      MB-29 (ACC) - Body ground - ACC power supply Power switch off Below 1 V
      MB-31 (ALTB) - Body ground - Auxiliary battery power supply Power switch off 11 to 14 V
      MB-32 (IG) - Body ground - Power switch power supply Power switch on (IG) 11 to 14 V
      MB-32 (IG) - Body ground - Power switch power supply Power switch off Below 1 V

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

    3. Reconnect the MB and L8 main body ECU (multiplex network body ECU) connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      2B-1 (ACT-) - Body ground B - Body ground Door lock motor unlock drive output (except driver door) Door control switch (multiplex network master switch) or driver door key cylinder off Below 1 V
      2B-1 (ACT-) - Body ground B - Body ground Door lock motor unlock drive output (except driver door) Door control switch (multiplex network master switch) or driver door key cylinder unlocked 11 to 14 V
      2B-8 (ACT+) - Body ground L - Body ground Door lock motor lock drive output (all doors) Door control switch (multiplex network master switch) or driver door key cylinder off Below 1 V
      2B-8 (ACT+) - Body ground L - Body ground Door lock motor lock drive output (all doors) Door control switch (multiplex network master switch) or driver door key cylinder locked 11 to 14 V
      2D-35 (FLCY) - Body ground

      V - Body ground*1

      BR - Body ground*2

      		 Front door LH courtesy light switch input Front door LH open Below 1 V
      2D-35 (FLCY) - Body ground

      V - Body ground*1

      BR - Body ground*2

      		 Front door LH courtesy light switch input Front door LH closed 11 to 14 V
      2D-36 (FRCY) - Body ground

      BR - Body ground*1

      V - Body ground*2

      		 Front door RH courtesy light switch input Front door RH open Below 1 V
      2D-36 (FRCY) - Body ground

      BR - Body ground*1

      V - Body ground*2

      		 Front door RH courtesy light switch input Front door RH closed 11 to 14 V
      L7-6 (LRCY) - Body ground G - Body ground Rear door courtesy light switch input Rear door LH or RH open Below 1 V
      L7-6 (LRCY) - Body ground G - Body ground Rear door courtesy light switch input Rear door LH and RH closed Pulse generation
      L7-7 (LSFL) - Body ground GR - Body ground Front door LH unlock detection switch input Front door LH unlocked Below 1 V
      L7-7 (LSFL) - Body ground GR - Body ground Front door LH unlock detection switch input Power switch off, all doors closed and front door LH locked Pulse generation
      L7-18 (LSFR) - Body ground LG - Body ground Front door RH unlock detection switch input Front door RH unlocked Below 1 V
      L7-18 (LSFR) - Body ground LG - Body ground Front door RH unlock detection switch input Power switch off, all doors closed and front door RH locked Pulse generation
      2B-29 (LSR) - Body ground GR - Body ground Rear door RH unlock detection switch input Rear door RH or LH unlocked Below 1 V
      2B-29 (LSR) - Body ground GR - Body ground Rear door RH unlock detection switch input Power switch off, all doors closed, rear door RH and LH locked Pulse generation
      2D-25 (LSR) - Body ground GR - Body ground Rear door LH unlock detection switch input Rear door LH or RH unlocked Below 1 V
      2D-25 (LSR) - Body ground GR - Body ground Rear door LH unlock detection switch input Power switch off, all doors closed, rear door LH and RH locked Pulse generation
      2C-23 (BZR) - Body ground R - Body ground Wireless door lock buzzer signal Wireless door lock buzzer off Below 1 V
      2C-23 (BZR) - Body ground R - Body ground Wireless door lock buzzer signal Wireless door lock buzzer on 11 to 14 V

      • *1: for LHD

      • *2: for RHD

      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 CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A0041ZCE88

    1. Disconnect the L56 and L58 certification ECU (smart key ECU assembly) connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L56-15 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L56-1 (+B) - L56-15 (E) B - W-B Auxiliary battery power supply Power switch off 11 to 14 V

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

    3. Reconnect the L56 and L58 certification ECU (smart key ECU assembly) connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L56-16 (IG) - L56-15 (E) BE - W-B IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      L58-16 (RSSI) - L56-15 (E) V - W-B Door control receiver output signal Power switch off, all doors closed and electrical key transmitter sub-assembly switch not pressed 11 to 14 V or pulse generation
      Power switch off, all doors closed and electrical key transmitter sub-assembly switch pressed Below 2 V
      L58-15 (RDA) - L56-15 (E) Y - W-B Door control receiver data input signal Power switch off, all doors closed and electrical key transmitter sub-assembly switch not pressed 11 to 14 V or pulse generation
      Power switch off, all doors closed and electrical key transmitter sub-assembly switch pressed Pulse generation
      L58-5 (RCO) - L56-15 (E) R - W-B Supply battery to door control receiver Power switch off, all doors closed and electrical key transmitter sub-assembly switch pressed 4.5 to 5.5 V

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