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Terminals Of Ecu

  1. CHECK MULTIPLEX NETWORK DOOR ECU FRONT LH (DRIVER DOOR ECU) 
    Fig 1: Identifying ECU Connector Terminals
    G05293546Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D19 ECU connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      CONNECTOR SPECIFICATION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (D19-1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      CPUB (D19-4) - GND (D19-1) L-O - W-B Battery (ECU power source) Always 10 to 14 V
      SIG (D19-5) - GND (D19-1) V-W - W-B Ignition power supply Ignition switch OFF Below 1 V
      SIG (D19-5) - GND (D19-1) V-W - W-B Ignition power supply Ignition switch ON 10 to 14 V
      BDR (D19-6) - GND (D19-1) B-R - W-B Battery (ECU power source) Always 10 to 14 V
      HTR- (D19-22) - GND (D19-1) W-B - W-B Mirror defogger switch signal Always Below 1 Ω
      HTR+ (D19-13) - GND (D19-1) R-W - W-B Mirror defogger switch signal Always Below 1 Ω

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

    3. Reconnect the D19 ECU connector.
    4. Measure the voltage of the connector.
      VOLTAGE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      MR+* (D19-7) - Body ground Y - Body ground Mirror retract switch signal Mirror retract switch ON (Outer rear view mirror LH is retracting) 10 to 14 V
      MR-* (D19-18) - GND (D19-1) V - W-B Mirror retract switch signal Mirror retract switch OFF (Outer rear view mirror LH is returning) 10 to 14 V
      PM+R (D19-20) - GND (D19-1) R-B - W-B Mirror master switch signal (RIGHT and DOWN) Mirror master switch LEFT, Mirror control switch OFF 10 to 14 V
      PM+R (D19-20) - GND (D19-1) R-B - W-B Mirror master switch signal (RIGHT and DOWN) Mirror master switch LEFT, Mirror control switch DOWN and RIGHT Below 1 V
      DMHR (D19-19) - GND (D19-1) LG - W-B Mirror master switch signal (LEFT and DOWN) Mirror master switch LEFT, Mirror control switch OFF 10 to 14 V
      DMHR (D19-19) - GND (D19-1) LG - W-B Mirror master switch signal (LEFT and DOWN) Mirror master switch LEFT, Mirror control switch DOWN and LEFT Below 1 V
      DMVR (D19-8) - GND (D19-1) LG-B - W-B Mirror control switch signal (UP and RIGHT) Mirror master switch LEFT, Mirror control switch OFF 10 to 14 V
      DMVR (D19-8) - GND (D19-1) LG-B - W-B Mirror control switch signal (UP and RIGHT) Mirror master switch LEFT, Mirror control switch UP and RIGHT Below 1 V
      EC+ (D19-15) - GND (D19-1) O - W-B Mirror EC signal Electrochromatic mirror system is operating 10 to 14 V
      EC+ (D19-15) - GND (D19-1) O - W-B Mirror EC signal Electrochromatic mirror system is not operating Below 1 V
      HSSR (D19-26) - GND (D19-1) GR - W-B Horizontal direction position signal Mirror master switch LEFT Mirror control switch OFF 10 to 14 V
      HSSR (D19-26) - GND (D19-1) GR - W-B Horizontal direction position signal Mirror master switch LEFT Mirror control switch RIGHT and LEFT Below 1 V
      DE2 (D19-25) - GND (D19-1) R - W-B Power source for mirror position sensor Ignition switch ACC or OFF during sleep mode 4.8 to 5.2 V
      DE2 (D19-25) - GND (D19-1) R-W-B Power source for mirror position sensor Ignition switch ON Below 1 V
      VSSR (D19-16) - GND (D19-1) G-O - W-B Vertical direction position signal Mirror master switch LEFT Mirror control switch OFF 10 to 14 V
      VSSR (D19-16) - GND (D19-1) G-O - W-B Vertical direction position signal Mirror master switch LEFT Mirror control switch UP and DOWN Below 1 V
      HINT:
      *: w/ Retractable Mirror

      If the result is not as specified, the ECU may have a malfunction.

  2. CHECK MULTIPLEX NETWORK DOOR ECU FRONT RH (PASSENGER DOOR ECU) 
    Fig 2: Identifying Passenger Door ECU Connector Terminals
    G05293547Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P11 ECU connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      VOLTAGE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (P11-1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      CPUB (P11-4) - GND (P11-1) L-O - W-B Battery (ECU power source) Always 10 to 14 V
      SIG (P11-5) - GND (P11-1) V-W - W-B Ignition power supply Ignition switch OFF Below 1 V
      SIG (P11-5) - GND (P11-1) V-W - W-B Ignition power supply Ignition switch ON 10 to 14 V
      BDR (P11-6) - GND (P11-1) G-Y - W-B Battery (ECU power source) Always 10 to 14 V
      HTR- (P11-22) - GND (P11-1) W-B - W-B Mirror defogger switch signal Always Below 1 Ω
      HTR+ (P11-13) - GND (P11-1) R-W - W-B Mirror defogger switch signal Always Below 1 Ω

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

    3. Reconnect the P11 ECU connector.
    4. Measure the voltage of the connector.
      VOLTAGE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      MR+* (P11-7) - Body ground Y - Body ground Mirror retract switch signal Mirror retract switch ON (Outer rear view mirror RH is retracting) 10 to 14 V
      MR-* (P11-18)-GND (P11-1) V - W-B Mirror retract switch signal Mirror retract switch OFF (Outer rear view mirror RH is returning) 10 to 14 V
      DM+R (P11-20) - GND (P11-1) R-B - W-B Mirror master switch signal (RIGHT and DOWN) Mirror master switch RIGHT, Mirror control switch OFF 10 to 14 V
      PM+R (P11-20) - GND (P11-1) R-B - W-B Mirror master switch signal (RIGHT and DOWN) Mirror master switch RIGHT, Mirror control switch DOWN and RIGHT Below 1 V
      PMHR (P11-19) - GND (P11-1) LG - W-B Mirror master switch signal (LEFT and DOWN) Mirror master switch RIGHT, Mirror control switch OFF 10 to 14 V
      PMHR (P11-19) - GND (P11-1) LG - W-B Mirror master switch signal (LEFT and DOWN) Mirror master switch RIGHT, Mirror control switch DOWN and LEFT Below 1 V
      PMVR (P11-8) - GND (P11-1) G-B - W-B Mirror control switch signal (UP and RIGHT) Mirror master switch RIGHT, Mirror control switch OFF 10 to 14 V
      PMVR (P11-8) - GND (P11-1) G-B - W-B Mirror control switch signal (UP and RIGHT) Mirror master switch RIGHT, Mirror control switch UP and RIGHT Below 1 V
      EC+ (P11-15) - GND (P11-1) O - W-B Mirror EC signal Electrochromatic mirror system is operating 10 to 14 V
      EC+ (P11-15) - GND (P11-1) O - W-B Mirror EC signal Electrochromatic mirror system is not operating Below 1 V
      HSSR (P11-26) - GND (P11-1) GR - W-B Horizontal direction position signal Mirror master switch RIGHT, Mirror control switch OFF 10 to 14 V
      HSSR (P11-26) - GND (P11-1) GR - W-B Horizontal direction position signal Mirror master switch RIGHT, Mirror control switch RIGHT and LEFT Below 1 V
      PE2 (P11-25) - GND (P11-1) P-L - W-B Power source for mirror position sensor Ignition switch ACC or OFF during sleep mode 4.8 to 5.2 V
      PE2 (P11-25) - GND (P11-1) P-L - W-B Power source for mirror position sensor Ignition switch ON Below 1 V
      VSSR (P11-16) - GND (P11-1) G-O - W-B Vertical direction position signal Mirror master switch RIGHT, Mirror control switch OFF 10 to 14 V
      VSSR (P11-16) - GND (P11-1) G-O - W-B Vertical direction position signal Mirror master switch RIGHT, Mirror control switch UP and DOWN Below 1 V
      HINT:
      *: w/ Retractable Mirror

      If the result is not as specified, the ECU may have a malfunction.

  3. CHECK DRIVER SIDE JUNCTION BLOCK (DRIVER SIDE JUNCTION BLOCK ECU) 
    Fig 3: Identifying Driver Side Junction Block ECU Connector Terminals
    G05293548Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D4 and D5 junction block connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      VOLTAGE CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      MPX-B (D4-5) - GND2 (D3-1) L-B - W-B Power supply Always Below 1 Ω
      R/E (D5-7) - Body ground LG - Body ground Ground Always Below 1 Ω
      RET* (D5-8) - GND2 (D4-1) GR - W-B Mirror retract switch signal Mirror retract switch OFF Below 1 V
      RET* (D5-8) - GND2 (D4-1) GR - W-B Mirror retract switch signal Mirror retract switch RETRACT 10 to 14 V
      MSW (D5-10) - R/E (D5-8) R-LG Mirror master switch signal (LEFT and RIGHT) Mirror master switch OFF Below 1 V
      MSW (D5-10) - R/E (D5-8) R-LG Mirror master switch signal (LEFT and RIGHT) Mirror master switch LEFT or RIGHT 0 to 5 V
      M+ (D5-11) - R/E (D5-8) R-B - LG Mirror control switch signal (UP, DOWN, LEFT and RIGHT) Mirror LEFT / RIGHT adjustment switch on neutral position Below 1 V
      M+ (D5-11) - R/E (D5-8) R-B - LG Mirror control switch signal (UP, DOWN, LEFT and RIGHT) Mirror LEFT / RIGHT adjustment switch on each position 0 to 5 V
      HINT:
      *: w/ Retractable Mirror

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

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