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Terminals Of Ecu

  1. CHECK POWER WINDOW REGULATOR MASTER SWITCH (DRIVER'S DOOR ECU) 
    Fig 1: Identifying D17 Master Switch Connector
    G02942661Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D17 master switch connector.
    2. Check the continuity and voltage of each terminal of the disconnected connector.
      1. Standard: 
      ECU TERMINALS VOLTAGE REFERENCE

      Symbols (Terminal No.) Wiring color Condition Specified condition
      GND (D17-2) <=> Body ground W-B <=> Body ground Constant Continuity
      BDR (D17-10) <=> GND (D17-2) L-W <=> W-B Constant 10-14 V
      CPUB (D17-9) <=> GND (D17-2) W-R <=> W-B Constant 10-14 V
      SIG (D17-20) <=> GND (D17-2) B-R <=> W-B Ignition switch OFF --> ON 0V --> 10 - 14 V
      KL (D17-4) <=> KEYE (D17-3) L-Y <=> W-B Driver's door key cylinder OFF --> LOCK No continuity --> Continuity
      KUL (D17-14) <=> KEYE (D17-3) L<=>W-B Driver's door key cylinder OFF --> UNLOCK No continuity --> Continuity
      LSWD (D17-16) <=> KEYE (D17-3) LG <=> W-B Driver's door LOCK --> UNLOCK No continuity --> Continuity
    3. Reconnect the master switch connector.
    4. Check the voltage of each terminal of the connector.
      1. Standard: 
      ECU TERMINALS VOLTAGE REFERENCE

      Symbols (Terminal No.) Wiring color Condition Specified condition
      KL (D17-4) <=> KEYE (D17-3) L-Y <=> W-B Driver's door key cylinder OFF --> LOCK 10 - 14 V --> OV
      KUL (D17-14) <=>KEYE (D17-3) L --> W-B Driver's door key cylinder OFF --> UNLOCK 10 - 14 V --> 0 V
      LSWD (D17-16) <=>KEYE (D17-3) LG --> W-B Driver's door LOCK --> UNLOCK 10 - 14 V --> 0 V
  2. CHECK DRIVER SIDE JUNCTION BLOCK ASSY (BODY ECU) (LEFT SIDE) 
    Fig 2: Locating Driver Side Junction Block Assembly (Body ECU) (Left Side)
    G02942662Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the B4 body ECU connector.
    2. Check the continuity of the terminal of the disconnected connector.
      1. Standard: 
      ECU TERMINALS CONTINUITY REFERENCE

      Symbols (Terminal No.) Wiring color Condition Specified condition
      KSW (B4-19) <=> Body ground L <=> Body ground No key in the ignition key cylinder --> With key No continuity --> Continuity
    3. Reconnect the B4 body ECU connector.
    4. Check the voltage of each terminal of the connector.
      1. Standard: 
      ECU TERMINALS VOLTAGE REFERENCE

      Symbols (Terminal No.) Wiring color Condition Specified condition
      ACTD (B6-11) <=> Body ground L-B <=> Body ground Master switch and driver's door key cylinder OFF --> LOCK 0V --> 10 - 14 V --> 0V
      DCTY (B6-1) <=> Body ground R-G <=> Body ground Driver's door CLOSED --> OPEN 10 - 14 V --> Below 0V
      PCTY (B4-11) <=> Body ground R-G <=> Body ground Passenger's door CLOSED --> OPEN 10 - 14 V --> Below 0V
      RLCY (B4-12) <=> Body ground R-W <=> Body ground Rear door LH CLOSED --> OPEN 10 - 14 V --> Below 0V
      RRCY (B4-14) <=> Body ground R-Y <=> Body ground Rear door RH CLOSED --> OPEN 10 - 14 V --> Below 0V
  3. CHECK DRIVER SIDE JUNCTION BLOCK ASSY (BODY ECU) (REAR SIDE) 
    Fig 3: Locating Drive Side Junction Block Assembly
    G02942663Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 2B, 2F and 2G driver side J/B connectors.
    2. Check the continuity and voltage of each terminal of the disconnected connectors.
      1. Standard: 
      ECU TERMINALS VOLTAGE CONTINUITY REFERENCE

      Symbols (Terminal No.) Wiring color Condition Specified condition
      B (2F-7) <=> Body ground R <=> Body ground Constant 10 - 14 V
      BDR1 (2G-14) <=> Body ground L-W <=> Body ground Constant 10 - 14 V
      SGND (2B-11) <=> Body ground BR <=> Body ground Constant Continuity
    3. Reconnect the connectors, and check continuity and voltage of each terminal of the connectors.
      1. Standard: 
      ECU TERMINALS VOLTAGE CONTINUITY REFERENCE

      Symbols (Terminal No.) Wiring color Condition Specified condition
      ACT+ (2C-5) <=> Body ground L-R <=> Body ground Master switch and driver's door key cylinder OFF --> LOCK 0V --> 10 - 14 V --> 0V
      ACT- (2C-6) <=> Body ground L-B <=> Body ground Master switch and driver's door key cylinder OFF --> UNLOCK 0V --> 10 - 14 V --> 0V
      GND (2R-8) <=> Body ground W-B <=> Body ground Constant Continuity
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