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Terminals Of Ecu

  1. CHECK FRONT MULTIPLEX NETWORK DOOR ECU LH 
    Fig 1: Identifying M9, M10 And z6 ECU Connectors
    G05315088Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the M9, M10 and z6 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      TERMINAL DESCRIPTION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (M9-1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      CPUB (M9-4) - GND (M9-1) LG - W-B Battery (ECU power source) Always 10 to 14 V
      SIG (M9-3) - GND (M9-1) Y - W-B Ignition power supply Power switch OFF Below 1 V
      Power switch ON (IG) 10 to 14 V
      BDR (M9-6) - GND (M9-1) L - W-B Battery (ECU power source) Always 10 to 14 V
      - (Z6-12) - + (Z6-4) B-R - BR-W Mirror heater output and ground 25°C (75°F) 3.6 to 4.8 Ω
      SEL1 (M10-11)-SELE (M10-12) P-P Terminal for identification of driver side Always Below 1 Ω

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

    3. Reconnect the M9, M10 and z6 ECU connectors.
    4. Measure the voltage of the connectors.
      TERMINAL DESCRIPTION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      MR (z6-3) - GND (M9-1) G - W-B Mirror retract motor output (retracting) Mirror retract switch ON (Outer rear view mirror LH is retracting) 10 to 14 V
      MF (z6-11) - GND (M9-1) L - W-B Mirror retract motor output (returning) Mirror retract switch OFF (Outer rear view mirror LH is returning) 10 to 14 V
      M+ (z6-10) - GND (M9-1) B - W-B Mirror motor output Mirror master switch LEFT, Mirror control switch OFF Below 1 V
      Mirror master switch LEFT, Mirror control switch UP or LEFT Below 1 V
      Mirror master switch LEFT, Mirror control switch DOWN or RIGHT 10 to 14 V
      MH (z6-9) - GND (M9-1) R - W-B Mirror motor output Mirror master switch LEFT, Mirror control switch OFF Below 1 V
      Mirror master switch LEFT, Mirror control switch RIGHT Below 1 V
      Mirror master switch LEFT, Mirror control switch LEFT 10 to 14 V
      MV (z6-1) - GND (M9-1) W - W-B Mirror motor output Mirror master switch LEFT, Mirror control switch OFF Below 1 V
      Mirror master switch LEFT, Mirror control switch DOWN Below 1 V
      Mirror master switch LEFT, Mirror control switch UP 10 to 14 V
      + (z6-4) - GND (M9-1) BR-W - W-B Mirror heater output Rear defogger switch ON 10 to 14 V
      Rear defogger switch OFF Below 1 V
      VSSL (z6-6) - E1 (Z6-14) V - GR Vertical direction position signal Mirror master switch RIGHT or LEFT Mirror control switch UP or DOWN Voltage fluctuates between 0 and 5 V
      HSSL (z6-13) - E1 (Z6-14) LG - GR Horizontal direction position signal Mirror master switch RIGHT or LEFT Mirror control switch RIGHT or LEFT Voltage fluctuates between 0 and 5 V
      VC (Z6-5) - E1 (Z6-14) SB - GR Power source for mirror position sensor Power switch OFF during sleep mode Below 1 V
      Power switch ON (IG) 3.5 to 5.5 V
      ECI+ (M9-18) - ECI - (M9-19) BR - O EC mirror signal Electrochromic mirror system is operating 1.05 to 1.35 V
      Electrochromic mirror system is not operating Below 1 V
      EC+ (z6-7) - EC- (Z6-15) BR - B-L EC mirror signal Electrochromic mirror system is operating 1.05 to 1.35 V
      Electrochromic mirror system is not operating Below 1 V
      SEL1 (M10-11) - GND (M9-1) P - W-B Terminal for identification of driver side Always Below 1 V

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

  2. CHECK FRONT MULTIPLEX NETWORK DOOR ECU RH 
    Fig 2: Identifying M4 And z5 ECU Connectors
    G05315089Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the M4 and z5 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      TERMINAL DESCRIPTION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (M4-1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      CPUB (M4-4) - GND (M4-1) LG - W-B Battery (ECU power source) Always 10 to 14 V
      SIG (M4-3) - GND (M4-1) L - W-B Ignition power supply Power switch OFF Below 1 V
      Power switch ON (IG) 10 to 14 V
      BDR (M4-6) - GND (M4-1) L - W-B Battery (ECU power source) Always 10 to 14 V
      - (z5-12)- + (z5-4) B-R - BR-W Mirror heater output and ground 25°C (75°F) 3.6 to 4.8 Ω

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

    3. Reconnect the M4 and z5 ECU connectors.
    4. Measure the voltage of the connectors.
      TERMINAL DESCRIPTION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      MR (z5-3) - GND (M4-1) G - W-B Mirror retract motor output (retracting) Mirror retract switch ON (Outer rear view mirror RH is retracting) 10 to 14 V
      MF (z5-11) - GND (M4-1) L - W-B Mirror retract motor output (returning) Mirror retract switch OFF (Outer rear view mirror RH is returning) 10 to 14 V
      M+ (z5-10) - GND (M4-1) B - W-B Mirror motor output Mirror master switch RIGHT, Mirror control switch OFF Below 1 V
      Mirror master switch RIGHT, Mirror control switch UP or LEFT Below 1 V
      Mirror master switch RIGHT, Mirror control switch DOWN or RIGHT 10 to 14 V
      MH (z5-9) - GND (M4-1) R - W-B Mirror motor output Mirror master switch RIGHT, Mirror control switch OFF Below 1 V
      Mirror master switch RIGHT, Mirror control switch RIGHT Below 1 V
      Mirror master switch RIGHT, Mirror control switch LEFT 10 to 14 V
      MV (z5-1) - GND (M4-1) W - W-B Mirror motor output Mirror master switch RIGHT, Mirror control switch OFF Below 1 V
      Mirror master switch RIGHT, Mirror control switch DOWN Below 1 V
      Mirror master switch RIGHT, Mirror control switch UP 10 to 14 V
      + (z5-4) - GND (M4-1) BR-W - W-B Mirror heater output Rear defogger switch ON 10 to 14 V
      Rear defogger switch OFF Below 1 V
      VSSR (z5-6) - E1 (z5-14) V - GR Vertical direction position signal Mirror master switch RIGHT or LEFT Mirror control switch UP or DOWN Voltage fluctuates between 0 and 5 V
      HSSR (z5-13) - E1 (z5-14) LG - GR Horizontal direction position signal Mirror master switch RIGHT or LEFT Mirror control switch RIGHT or LEFT Voltage fluctuates between 0 and 5 V
      VC (z5-5) - E1 (z5-14) SB - GR Power source for mirror position sensor Power switch ON (ACC) or OFF during sleep mode Below 1 V
      Power switch ON (IG) 3.5 to 5.5 V
      ECI+ (M4-18) - ECI- (M4-19) BR - O EC mirror signal Electrochromic mirror system is operating 1.05 to 1.35 V
      Electrochromic mirror system is not operating Below 1 V
      EC+ (z5-7) - EC- (z5-15) BR - B-L EC mirror signal Electrochromic mirror system is operating 1.05 to 1.35 V
      Electrochromic mirror system is not operating Below 1 V

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

  3. INSPECT MULTIPLEX NETWORK MASTER SWITCH 
    Fig 3: Identifying Q13 Master Switch Connector
    G05315090Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the Q13 master switch connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      TERMINAL DESCRIPTION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      E (Q13-2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      BDR1 (Q13-10) - E (Q13-2) Y - W-B Power window power source Always 10 to 14 V
      CPUB (Q13-9) - E (Q13-2) G - W-B Power source for CPU and relevant device Always 10 to 14 V
      SIG (Q13-20) - E (Q13-2) V - W-B Power source for CPU and relevant device Power switch OFF Below 1 V
      Power switch ON (IG) 10 to 14 V

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

    3. Reconnect the Q13 master switch connector.
    4. Measure the voltage of the connector.
      TERMINAL DESCRIPTION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      MM (Q13-3) - E (Q13-2) SB - W-B SET switch signal SET switch OFF 10 to 14 V
      SET switch ON Below 1 V
      M1 (Q13-13) - E (Q13-2) L - W-B M1 switch signal M1 switch OFF 10 to 14 V
      M1 switch ON Below 1 V
      M2 (Q13-17) - E (Q13-2) V - W-B M2 switch signal M2 switch OFF 10 to 14 V
      M2 switch ON Below 1 V
      M3 (Q13-18) - E (Q13-2) R - W-B M3 switch signal M3 switch OFF 10 to 14 V
      M3 switch ON Below 1 V

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

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