WIRELESS DOOR LOCK CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND DRIVER SIDE JUNCTION BLOCK ASSEMBLY


    1. Disconnect the A main body ECU (multiplex network body ECU) connector.

      A003T11E04

    2. Disconnect the 2B and 2C driver side junction block assembly connectors.

    3. 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
      2C-18 (BECU) - Body ground Y - Body ground Auxiliary battery power supply Power switch off 11 to 14 V
      A-31 (ALTB) - Body ground - Auxiliary battery power supply Power switch off 11 to 14 V
      A-32 (IG) - Body ground - Power switch power supply Power switch on (IG) 11 to 14 V
      A-32 (IG) - Body ground - Power switch power supply Power switch off Below 1 V
      A-29 (ACC) - Body ground - ACC power supply Power switch on (ACC) 11 to 14 V
      A-29 (ACC) - Body ground - ACC power supply Power switch off Below 1 V
      2B-6 (GND1) - 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 A main body ECU (multiplex network body ECU) connector.

    5. Reconnect the 2B and 2C driver side junction block assembly connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      2D-35 (FLCY) - Body ground W - Body ground Front door courtesy switch LH input Front door LH open Below 1 V
      2D-35 (FLCY) - Body ground W - Body ground Front door courtesy switch LH input Front door LH closed 11 to 14 V
      2B-31 (FRCY) - Body ground BR - Body ground Front door courtesy switch RH input Front door RH open Below 1 V
      2B-31 (FRCY) - Body ground BR - Body ground Front door courtesy switch RH input Front door RH closed 11 to 14 V
      E120-23 (LCTY) - Body ground SB - Body ground Rear door courtesy light switch LH input Rear door LH open Below 1 V
      E120-23 (LCTY) - Body ground SB - Body ground Rear door courtesy light switch LH input Rear door LH closed 11 to 14 V
      E120-6 (RCTY) - Body ground LG - Body ground Rear door courtesy light switch RH input Rear door RH open Below 1 V
      E120-6 (RCTY) - Body ground LG - Body ground Rear door courtesy light switch RH input Rear door RH closed 11 to 14 V
      E120-19 (BCTY) - Body ground LG - Body ground Back door courtesy light switch input Back door open Below 1 V
      E120-19 (BCTY) - Body ground LG - Body ground Back door courtesy light switch input Back door closed 11 to 14 V
      E120-11 (L2) - Body ground SB - Body ground Driver side door key-linked lock input Driver side door key cylinder turned to lock Below 1 V
      E120-11 (L2) - Body ground SB - Body ground Driver side door key-linked lock input Driver side door key cylinder off 11 to 14 V
      E120-12 (UL2) - Body ground P - Body ground Driver side door key-linked unlock input Driver side door key cylinder turned to unlock Below 1 V
      E120-12 (UL2) - Body ground P - Body ground Driver side door key-linked unlock input Driver side door key cylinder off 11 to 14 V
      2B-9 (ACT+) - Body ground R - Body ground Door lock motor lock drive output (all doors) Multiplex network master switch (door control switch) Below 1 V
      2B-9 (ACT+) - Body ground R - Body ground Door lock motor lock drive output (all doors) Multiplex network master switch (door control switch) 11 to 14 V
      2B-1 (ACT-) - Body ground SB - Body ground Door lock motor unlock drive output (all doors) Multiplex network master switch (door control switch) Below 1 V
      2B-1 (ACT-) - Body ground SB - Body ground Door lock motor unlock drive output (all doors) Multiplex network master switch (door control switch) 11 to 14 V
      E120-18 (LSFR) - Body ground LG - Body ground Front door RH lock position switch input Front door RH unlocked Below 1 V
      E120-18 (LSFR) - Body ground LG - Body ground Front door RH lock position switch input Power switch off, all doors closed and front door RH side door locked 11 to 14 V
      2D-25 (LSR) - Body ground*1 Y - Body ground Rear door LH lock position switch input Rear door LH unlocked Below 1 V
      2D-25 (LSR) - Body ground*1 Y - Body ground Rear door LH lock position switch input Power switch off, all doors closed and rear door LH locked 11 to 14 V
      2B-29 (LSR) - Body ground*1 Y - Body ground Rear door RH lock position switch input Rear door RH unlocked Below 1 V
      2B-29 (LSR) - Body ground*1 Y - Body ground Rear door RH lock position switch input Power switch off, all doors closed and rear door RH locked 11 to 14 V
      E120-7 (LSFL) - Body ground Y - Body ground Front door LH lock position switch input Front door LH unlocked Below 1 V
      E120-7 (LSFL) - Body ground Y - Body ground Front door LH lock position switch input Power switch off, all doors closed and Front door LH locked 11 to 14 V
      2C-23 (BZR) - Body ground L - Body ground Wireless door lock buzzer signal Wireless door lock buzzer off Below 1 V
      2C-23 (BZR) - Body ground L - Body ground Wireless door lock buzzer signal Wireless door lock buzzer on Pulse generation
      E120-3 (HAZ) - Body ground Y - Body ground Turn signal flasher relay signal Any transmitter switch not pressed 11 to 14 V
      E120-3 (HAZ) - Body ground Y - Body ground Turn signal flasher relay signal Any transmitter switch pressed Below 1 V

      *1: w/ Double Locking System

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

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A003SNTE29

    1. Disconnect the E117 certification ECU (smart key ECU assembly) connector.

    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
      E117-17 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E117-1 (+B) - E117-17 (E) W - W-B Auxiliary battery power supply Always 11 to 14 V
      E117-18 (IG) - E117-17 (E) B - W-B IG power supply Power switch on (IG) 11 to 14 V
      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 E117 certification ECU (smart key ECU assembly) connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E117-39 (RSSI) - E117-17 (E) R - W-B Door control receiver output signal Power switch off, all doors closed and transmitter switch not pressed 11 to 14 V
      Power switch off, all doors closed and transmitter switch pressed Below 2 V
      E117-38 (RDA) - E117-17 (E) Y - W-B Door control receiver input signal Power switch off, all doors closed and transmitter switch not pressed 11 to 14 V pulse generation at regular intervals
      Power switch off, all doors closed and transmitter switch pressed Pulse generation
      E117-29 (RC0) - E117-17 (E) V - W-B Supply battery to door control receiver Power switch off, all doors closed and transmitter 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.