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POWER DOOR LOCK CONTROL SYSTEM TERMINALS OF ECU

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  1. A00073VE03

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


    1. Disconnect the MB and H9 main body ECU (multiplex network body ECU) connectors.

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

      Tip:

      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
      H9-3 (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 - IG power supply Power switch on (IG) 11 to 14 V
      MB-32 (IG) - Body ground - IG 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 H9 main body ECU (multiplex network body ECU) connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      3C-11 (ACT-) - Body ground B - Body ground Door lock motor unlock drive output (except driver door) Multiplex network master switch assembly or driver door key cylinder off Below 1 V
      3C-11 (ACT-) - Body ground B - Body ground Door lock motor unlock drive output (except driver door) Multiplex network master switch assembly or driver door key cylinder unlocked 11 to 14 V
      3C-12 (ACT+) - Body ground L - Body ground Door lock motor lock drive output (all doors) Multiplex network master switch assembly or driver door key cylinder off Below 1 V
      3C-12 (ACT+) - Body ground L - Body ground Door lock motor lock drive output (all doors) Multiplex network master switch assembly or driver door key cylinder locked 11 to 14 V
      3B-4 (ACTD) - Body ground GR - Body ground Driver door lock motor unlock drive output Multiplex network master switch assembly or driver door key cylinder off Below 1 V
      3B-4 (ACTD) - Body ground GR - Body ground Driver door lock motor unlock drive output Multiplex network master switch assembly or driver door key cylinder unlocked 11 to 14 V
      3B-14 (FRCY) - Body ground Y - Body ground Front door courtesy light switch RH input Front door RH open Below 1 V
      3B-14 (FRCY) - Body ground Y - Body ground Front door courtesy light switch RH input Front door RH closed 11 to 14 V
      3C-15 (FLCY) - Body ground L - Body ground Front door courtesy light switch LH input Front door LH open Below 1 V
      3C-15 (FLCY) - Body ground L - Body ground Front door courtesy light switch LH input Front door LH closed 11 to 14 V
      H11-3 (LCTY) - Body ground G - Body ground Rear door courtesy light switch LH input Rear door LH open Below 1 V
      H11-3 (LCTY) - Body ground G - Body ground Rear door courtesy light switch LH input Rear door LH closed 11 to 14 V
      H10-6 (RCTY) - Body ground B - Body ground Rear door courtesy light switch RH input Rear door RH open Below 1 V
      H10-6 (RCTY) - Body ground B - Body ground Rear door courtesy light switch RH input Rear door RH closed 11 to 14 V
      H10-9 (L1) - Body ground LG - Body ground Door control switch input Door control switch locked Below 1 V
      H10-9 (L1) - Body ground LG - Body ground Door control switch input Door control switch off Pulse generation
      H10-10 (UL1) - Body ground G - Body ground Door control switch input Door control switch unlocked Below 1 V
      H10-10 (UL1) - Body ground G - Body ground Door control switch input Door control switch off Pulse generation
      H10-11 (L2) - Body ground R - Body ground Front door key-linked lock input Front door key cylinder turned to lock Below 1 V
      H10-11 (L2) - Body ground R - Body ground Front door key-linked lock input Front door key cylinder off Pulse generation
      H10-24 (UL3) - Body ground GR - Body ground Driver door key-linked unlock input Driver door key cylinder turned to unlock Below 1 V
      H10-24 (UL3) - Body ground GR - Body ground Driver door key-linked unlock input Driver door key cylinder off Pulse generation
      H10-7 (LSFL) - Body ground L - Body ground Front door LH unlock detection switch input Front door LH unlocked Below 1 V
      H10-7 (LSFL) - Body ground L - Body ground Front door LH unlock detection switch input Front door LH locked Pulse generation
      H10-18 (LSFR) - Body ground W - Body ground Front door RH unlock detection switch input Front door RH unlocked Below 1 V
      H10-18 (LSFR) - Body ground W - Body ground Front door RH unlock detection switch input Front door RH locked Pulse generation
      3A-53 (LSR) - Body ground GR - Body ground Rear door RH unlock detection switch input Rear door RH or LH unlocked Below 1 V
      3A-53 (LSR) - Body ground GR - Body ground Rear door RH unlock detection switch input Rear door RH and LH locked Pulse generation
      3C-17 (LSR) - Body ground GR - Body ground Rear door LH unlock detection switch input Rear door LH or RH unlocked Below 1 V
      3C-17 (LSR) - Body ground GR - Body ground Rear door LH unlock detection switch input Rear door LH and RH locked Pulse generation

      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.