POWER DOOR LOCK CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY ECU


    1. Remove the body ECU from the instrument panel junction block assembly.

      for LHD: Click here

      for RHD: Click here

      B003NLDC33
      *A for RHD *B for LHD
      *1 Instrument Panel Junction Block Assembly - -
      B003Q15C10
      *1 Body ECU - -

    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.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A-1 (GND) - Body ground - Ground Always Below 1 Ω
      A-6 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      A-7 (IG) - Body ground - Ignition power supply Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V

    3. Install the body ECU to the instrument panel junction block assembly.

      for LHD: Click here

      for RHD: Click here

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2D-4 (BDSU) - Body ground*2 V - Body ground Back door opener switch input Back door opener switch assembly (open switch) off → on Pulse generation
      2H-5 (GSW) - Body ground B - Body ground Unlock detection input Ignition switch ON 2.8 to 4.3 V
      2N-2 (ACT+) - Body ground

      LG - Body ground*4

      LA-B - Body ground*9

      		 Door lock motor lock drive output Door control switch (power window regulator master switch assembly) or driver door key cylinder off Below 1 V
      Door control switch (power window regulator master switch assembly) or driver door key cylinder locked 11 to 14 V
      2N-3 (ACT-) - Body ground

      GR - Body ground*4

      LA-W - Body ground*9

      		 Door lock motor unlock drive output Door control switch (power window regulator master switch assembly) or driver door key cylinder off Below 1 V
      Door control switch (power window regulator master switch assembly) or driver door key cylinder unlocked 11 to 14 V
      2M-1 (TR+) - Body ground*1 LA-R - Body ground Back door lock motor unlock drive output Back door closed Below 1 V
      Back door open 11 to 14 V
      2L-4 (DCTY) - Body ground R - Body ground Driver door courtesy light switch input Driver door open Below 1 V
      Driver door closed Pulse generation
      2Q-1 (DCTY) - Body ground B - Body ground Driver door courtesy light switch input Driver door open Below 1 V
      Driver door closed Pulse generation
      2Q-2 (ACTY) - Body ground Y - Body ground All door courtesy light switches input except driver door Except driver door open Below 1 V
      Except driver door closed Pulse generation
      G33-4 (UL3) - Body ground*3, *7 BE - Body ground Driver door key-linked unlock input Driver door key cylinder turned to unlock position Below 1 V
      Driver door key cylinder off Pulse generation
      G33-5 (SPD) - Body ground V - Body ground Signal output to combination meter assembly Ignition switch ON, wheel being rotated Pulse generation
      G33-14 (PCTY) - Body ground LG - Body ground Front passenger door courtesy light switch input Front passenger door open Below 1 V
      Front passenger door closed Pulse generation
      G33-19 (L1) - Body ground*2 LG - Body ground Door control switch input Door control switch locked Below 1 V
      Door control switch off Pulse generation
      G33-12 (UL1) - Body ground*2 L - Body ground Door control switch input Door control switch unlocked Below 1 V
      Door control switch off Pulse generation
      G33-18 (L2) - Body ground GR - Body ground Driver door key-linked lock input Driver door key cylinder turned to lock position Below 1 V
      Driver door key cylinder off Pulse generation
      G33-11 (UL2) - Body ground*8 BE - Body ground Driver door key-linked unlock input Driver door key cylinder turned to unlock position Below 1 V
      Driver door key cylinder off Pulse generation
      G33-15 (LSWD) - Body ground R - Body ground Driver door unlock detection switch input Driver door unlocked Below 1 V
      Driver door locked Pulse generation
      G33-2 (LSWP) - Body ground Y - Body ground Except driver door unlock detection switch input Except driver door unlocked Below 1 V
      Except driver door locked Pulse generation
      G33-8 (KSW) - Body ground*2 G - Body ground Unlock warning switch input No key in ignition key cylinder Pulse generation
      Key in ignition key cylinder Below 1 V
      G28-1 (ACTG) - Body ground*4 GR - Body ground Collision door lock release signal Collision door lock release function does not operate

      Below 2 V*5

      7.3 to 9.9 V*6
      Collision door lock release function operates Below 1 V

      • *1: w/o Power Back Door System

      • *2: w/o Smart Entry and Start System

      • *3: for RHD

      • *4: w/ Door Control Battery

      • *5: Door control battery not charged

      • *6: Door control battery charging or charged

      • *7: w/ Double Locking System

      • *8: w/o Double Locking System

      • *9: w/o Door Control Battery

  2. CHECK DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY (w/ Double Locking System)

    B003MEAE04

    1. Disconnect the N53 double lock door control relay assembly connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      N53-1 (+B) - Body ground B - Body ground Battery power supply Always 11 to 14 V
      N53-7 (CPUB) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      N53-14 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the N53 double lock door control relay assembly connector.

    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
      N53-3 (ACTS) - Body ground L - Body ground All door double lock motor set on output Double lock unset Below 1 V
      Double lock set 11 to 14 V
      N53-4 (ACTR) - Body ground B - Body ground All door double lock motor set off output Double lock set Below 1 V
      Double lock unset 11 to 14 V
      N53-5 (DLPD) - Body ground W - Body ground Front RH double lock position switch input Double lock unset Pulse generation
      Double lock set Below 1 V
      N53-6 (DLPP) - Body ground P - Body ground Front LH double lock position switch input Double lock unset Pulse generation
      Double lock set Below 1 V
      N53-9 (LIN) - Body ground V - Body ground LIN communication signal Ignition switch ON Pulse generation
      N53-11 (DLPR) - Body ground Y - Body ground Rear RH double lock position switch input Double lock unset Pulse generation
      Double lock set Below 1 V
      N53-12 (DLPL) - Body ground R - Body ground Rear LH double lock position switch input Double lock unset Pulse generation
      Double lock set Below 1 V

  3. CHECK AIRBAG SENSOR ASSEMBLY

    for Type A: Click here

    for Type B: Click here

  4. CHECK COMBINATION METER ASSEMBLY

    Click here