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 L8 main body ECU (multiplex network body ECU) connectors.

      A01JCE7E05

    2. Disconnect the A, 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
      L8-3 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      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 L8 main body ECU (multiplex network body ECU) connectors.

    5. Reconnect the A, 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)*1 - Body ground

      2D-36 (FRCY)*2 - Body ground

      		 V - Body ground Driver side door courtesy switch input Driver side door open Below 1 V

      2D-35 (FLCY)*1 - Body ground

      2D-36 (FRCY)*2 - Body ground

      		 V - Body ground Driver side door courtesy switch input Driver side door closed 11 to 14 V

      2D-36 (FRCY)*1 - Body ground

      2D-35 (FLCY)*2 - Body ground

      		 BR - Body ground Front passenger side door courtesy switch input Front passenger side door open Below 1 V

      2D-36 (FRCY)*1 - Body ground

      2D-35 (FLCY)*2 - Body ground

      		 BR - Body ground Front passenger side door courtesy switch input Front passenger side door closed 11 to 14 V
      L7-6 (LRCY) - Body ground G - Body ground Rear door LH and RH courtesy light switch input Rear door LH or RH open Below 1 V
      L7-6 (LRCY) - Body ground G - Body ground Rear door LH and RH courtesy light switch input Rear door LH or RH closed 11 to 14 V
      L7-19 (BCTY) - Body ground L - Body ground Back door courtesy light switch input Back door open Below 1 V
      L7-19 (BCTY) - Body ground L - Body ground Back door courtesy light switch input Back door closed 11 to 14 V
      2B-8 (ACT+) - Body ground L - Body ground Door lock motor lock drive output (all doors) Multiplex network master switch (door control switch) or driver side door key cylinder off Below 1 V
      2B-8 (ACT+) - Body ground L - Body ground Door lock motor lock drive output (all doors) Multiplex network master switch (door control switch) or driver side door key cylinder locked 11 to 14 V
      2B-1 (ACT-) - Body ground B - Body ground Door lock motor unlock drive output (all doors) Multiplex network master switch (door control switch) or driver side door key cylinder off Below 1 V
      2B-1 (ACT-) - Body ground B - Body ground Door lock motor unlock drive output (all doors) Multiplex network master switch (door control switch) or driver side door key cylinder unlocked 11 to 14 V
      L7-18 (LSFR) - Body ground LG - Body ground Front passenger side door lock position switch input Front passenger side door unlocked Below 1 V
      L7-18 (LSFR) - Body ground LG - Body ground Front passenger side door lock position switch input Power switch off, all doors closed and front passenger side door locked 11 to 14 V
      2D-25 (LSR) - Body ground GR - Body ground Rear door LH lock position switch input Rear door LH unlocked Below 1 V
      2D-25 (LSR) - Body ground GR - 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 GR - Body ground Rear door RH lock position switch input Rear door RH unlocked Below 1 V
      2B-29 (LSR) - Body ground GR - Body ground Rear door RH lock position switch input Power switch off, all doors closed and rear door RH locked 11 to 14 V
      L7-7 (LSFL) - Body ground GR - Body ground Driver door lock position switch input Driver door unlocked Below 1 V
      L7-7 (LSFL) - Body ground GR - Body ground Driver door lock position switch input Power switch off, all doors closed and driver door locked 11 to 14 V
      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 Pulse generation
      L7-3 (HAZ) - Body ground Y - Body ground Turn signal flasher relay signal Any transmitter switch not pressed 11 to 14 V
      L7-3 (HAZ) - Body ground Y - Body ground Turn signal flasher relay signal Any transmitter switch pressed Below 1 V

      • *1: for LHD

      • *2: for RHD

      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)

    A01JANLE13

    1. Disconnect the L62 and L63 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
      L62-15 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L62-1 (+B) - L62-15 (E) B - W-B Auxiliary battery power supply Always 11 to 14 V
      L62-16 (IG) - L62-15 (E) BE - 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 L62 and L63 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
      L63-16 (RSSI) - L62-15 (E) V - 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
      L63-15 (RDA) - L62-15 (E) Y - W-B Door control receiver output signal Power switch off Pulse between 11 to 14 V occurs regularly
      L63-5 (RC0) - L62-15 (E) R - 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.