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Terminals Of Ecu

  1. CHECK MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH) 
    Fig 1: Identifying Main Body ECU RH (Cowl Side Junction Block RH)
    G05827948Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P1, J75, RA, RD, RJ, and RK J/B connectors.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      CONNECTOR TERMINAL REFERENCE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      DCTY (P1-14) - Body ground W - Body ground Driver door courtesy switch Driver door CLOSED → OPEN 10 kΩ or higher → Below 1 Ω
      RCTY (P1-16) - Body ground O - Body ground Rear right door courtesy switch input Rear right door CLOSED → OPEN 10 kΩ or higher → Below 1 Ω
      PCTY (J75-23) - Body ground B - Body ground Passenger door courtesy switch input Passenger door CLOSED → OPEN 10 kΩ or higher → Below 1 Ω
      LCTY (RA-11) - Body ground BR - Body ground Rear left door courtesy switch input Rear left door CLOSED → OPEN 10 kΩ or higher → Below 1 Ω
      GND2 (RD-7) - Body ground W-B - Body ground Ground Always Below 1 Ω
      IG (RM-1) - Body ground B - Body ground Engine power supply Engine switch on (IG) → off 10 to 14 V → Below 1 V
      GND1 (RD-17) - Body ground W-B - Body ground Ground Always Below 1 Ω
      ACC (RM-1) - Body ground B - Body ground ACC power supply Engine switch on (ACC) → off 10 to 14 V → Below 1 V
      L1 (RJ-7) - Body ground BR - Body ground Passenger door control switch LOCK input Passenger door control switch OFF → LOCK 10 kΩ or higher → Below 1 Ω
      UL1 (RJ-I0) - Body ground B - Body ground Passenger door control switch UNLOCK input Passenger door control switch OFF → UNLOCK 10 kΩ or higher → Below 1 Ω
      BECU (RK-5) - Body ground G-R - Body ground +B (BECU) power supply Always 10 to 14 V

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

    3. Reconnect the J/B connectors.
    4. Measure the voltage according to the value (s) in the table below.
      CONNECTOR TERMINAL REFERENCE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      LSWL (RA-2) - Body ground R - Body ground Rear left door lock position switch input Rear left door UNLOCK → LOCK Below 1 V → 10 to 14 V (or pulse generation)
      GSW (RA-7) - GND L - Body ground Center airbag sensor signal Engine switch on (IG) 4.5 to 5.5 V
      ACTD (P1-4) - Body ground L - Body ground Door lock motor UNLOCK drive output (Driver door) Door control switch (Master switch or passenger side switch) or driver side door key cylinder OFF → UNLOCK → OFF Below 1 V → 10 to 14 V → Below 1 V
      ACT+ (RJ-9) - Body ground L - Body ground Door lock motor LOCK drive output (All doors) Door control switch (Master switch or passenger side switch) or driver side door key cylinder OFF → LOCK → OFF Below 1 V → 10 to 14 V → Below 1 V
      ACT- (RJ-17) - Body ground LG - Body ground Door lock motor UNLOCK drive output (All doors) Door control switch (Master switch or passenger side switch) or driver side door key cylinder OFF → UNLOCK → OFF Below 1 V → 10 to 14 V → Below 1 V
      ACT- (RD-24) - Body ground O - Body ground Door lock motor UNLOCK drive output (All doors) Door control switch (Master switch or passenger side switch) or driver side door key cylinder OFF → UNLOCK → OFF Below 1 V → 10 to 14 V → Below 1 V
      LSWR (J75-5) - Body ground V - Body ground Rear right door lock position switch input Rear right door UNLOCK → LOCK Below 1 V → 10 to 14 V (or pulse generation)
      LSWP (J75-27) - Body ground W - Body ground Passenger door lock position switch input Passenger door UNLOCK → LOCK Below 1 V → 10 to 14 V (or pulse generation)

      If the result is not as specified, the main body ECU RH (cowl side J/B RH) may have a malfunction.

  2. CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 
    Fig 2: Identifying M7 Multiplex Network Master Switch Connector
    G05827949Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the M7 switch connector.
    2. Measure the voltage and resistance according to the value (s) in the table below.
      CONNECTOR TERMINAL REFERENCE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      CPUB (M7-9) - GND (M7-2) G - W-B Battery power supply Always 10 to 14 V
      BDR (M7-10) - GND (M7-2) L - W-B Battery power supply Always 10 to 14 V
      SIG (M7-20) - GND (M7-2) B - W-B SIG power supply Engine switch on (IG) → off 10 to 14 V → Below 1 V
      GND (M7-2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      KL (M7-4) - GND (M7-2) L - W-B Door key-linked door lock input Using key operate driver door lock cylinder to LOCK → UNLOCK Below 1 Ω → 10 kΩ or higher
      KUL (M7-14) - GND (M7-2) W - W-B Door key-linked door unlock input Using key, operate driver door lock cylinder to LOCK → UNLOCK Below 1 Ω → 10 kΩ or higher
      LSW (M7-16) - GND (M7-2) SB - W-B Driver side door lock position switch input Driver side door is unlocked → locked Below 1 Ω → 10 kΩ or higher

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

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