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Terminals Of Ecu

  1. CHECK FRONT DOOR ECU LH 
    Fig 1: Identifying Front Door ECU LH Connector
    G04952268Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N10 and z10 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      FRONT DOOR ECU LH VOLTAGE AND RESISTANCE

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      N10-1 (GND)-Body ground W-B - Body ground Ground Always Below 1 Ω
      N10-11 (CPUB)-N10-1 (GND) B-W-B Battery (ECU power source) Always 11 to 14 V
      N10-3(SIG)-N10-1 (GND) L-W-B Ignition power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      N10-6(BDR)-N10-1 (GND) O-W-B Battery (ECU power source) Always 11 to 14 V
      z10-12(HTR-)-z10-4 (HTR+) B-W Mirror heater output and ground 25°C (75°F) 3.0 to 4.0 Ω

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

    3. Reconnect the N10, and z10 ECU connectors.
    4. Measure the voltage of the connectors.
      FRONT DOOR ECU LH VOLTAGE

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      z10-3(MR)-N10-1 (GND) L-W-B Mirror retract motor output (retracting) Mirror retract switch ON (Outer rear view mirror LH is retracting) 11 to 14 V
      Z10-11 (MF)-N10-1 (GND) G-W-B Mirror retract motor output (returning) Mirror retract switch OFF (Outer rear view mirror LH is returning) 11 to 14 V
      z10-10(RM+R)-N10-1 (GND) R-W-B Mirror motor output Mirror master switch L, Mirror control switch OFF Below 1 V
      Mirror master switch L, Mirror control switch UP or LEFT Below 1 V
      Mirror master switch L, Mirror control switch DOWN or RIGHT 11 to 14 V
      z10-9(RMHR)-N10-1 (GND) BR - W-B Mirror motor output Mirror master switch L, Mirror control switch OFF Below 1 V
      Mirror master switch L, Mirror control switch RIGHT Below 1 V
      Mirror master switch L, Mirror control switch LEFT 11 to 14 V
      Z10-1 (RMVR)-N10-1 (GND) V-W-B Mirror motor output Mirror master switch L, Mirror control switch OFF Below 1 V
      Mirror master switch L, Mirror control switch DOWN Below 1 V
      Mirror master switch L, Mirror control switch UP 11 to 14 V
      z10-4(HTR+)-N10-1 (GND) W-W-B Mirror heater output Rear defogger switch ON 11 to 14 V
      Rear defogger switch OFF Below 1 V
      z10-6(VSSR)-z10-14 (RE1) Y-B - GR Vertical direction position signal Mirror master switch R or L Mirror control switch UP or DOWN Voltage fluctuates between 0 and 5 V
      z10-13(HSSR)-z10-14 (RE1) P-GR Horizontal direction position signal Mirror master switch R or L Mirror control switch RIGHT or LEFT Voltage fluctuates between 0 and 5 V
      z10-5(RVC)-z10-14 (RE1) R-W - GR Power source for mirror position sensor Engine switch off during sleep mode Below 1 V
      Engine switch on (IG) 3.5 to 5.5 V
      N10-21 (ECI+)-N10-22 (ECI-) R-L EC mirror signal Electrochromic mirror system is operating 1.05 to 1.35 V
      Electrochromic mirror system is not operating Below 1 V
      z10-7(EC+)-z10-15(EC-) B-G - B-R 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.

  2. CHECK FRONT DOOR ECU RH 
    Fig 2: Identifying Front Door ECU RH Connector
    G04952269Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N1 and z9 ECU connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      FRONT DOOR ECU RH VOLTAGE AND RESISTANCE

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      N1-1(GND)-Body ground W-B - Body ground Ground Always Below 1 Ω
      N1-11 (CPUB)-NM (GND) R-W-B Battery (ECU power source) Always 11 to 14 V
      N1-3(SIG)-N1-1 (GND) V-W-B Ignition power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      N1-6(BDR)-N1-1 (GND) O-W-B Battery (ECU power source) Always 11 to 14 V
      z9-12(HTR-)-z9-4 (HTR+) B-W Mirror heater output and ground 25°C (75°F) 3.0 to 4.0 Ω

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

    3. Reconnect the N1 and z9 ECU connectors.
    4. Measure the voltage of the connectors.
      FRONT DOOR ECU RH VOLTAGE

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      z9-3(MR)-N1-1 (GND) L-W-B Mirror retract motor output (retracting) Mirror retract switch ON (Outer rear view mirror RH is retracting) 11 to 14 V
      z9-11 (MF)-N1-1(GND) G-W-B Mirror retract motor output (returning) Mirror retract switch OFF (Outer rear view mirror RH is returning) 11 to 14 V
      z9-10(RM+R)-N1-1 (GND) R-W-B Mirror motor output Mirror master switch R, Mirror control switch OFF Below 1 V
      Mirror master switch R, Mirror control switch UP or LEFT Below 1 V
      Mirror master switch R, Mirror control switch DOWN or RIGHT 11 to 14 V
      z9-9(RMHR)-N1-1 (GND) BR - W-B Mirror motor output Mirror master switch R, Mirror control switch OFF Below 1 V
      Mirror master switch R, Mirror control switch RIGHT Below 1 V
      Mirror master switch R, Mirror control switch LEFT 11 to 14 V
      Z9-1 (RMVR)-NM (GND) V-W-B Mirror motor output Mirror master switch R, Mirror control switch OFF Below 1 V
      Mirror master switch R, Mirror control switch DOWN Below 1 V
      Mirror master switch R, Mirror control switch UP 11 to 14 V
      z9-4(HTR+)-N1-1 (GND) W-W-B Mirror heater output Rear defogger switch ON 11 to 14 V
      Rear defogger switch OFF Below 1 V
      z9-6(VSSR)-z9-14(RE1) Y-B - GR Vertical direction position signal Mirror master switch R or L Mirror control switch UP or DOWN Voltage fluctuates between 0 and 5 V
      z9-13(HSSR)-z9-14 (RE1) P-GR Horizontal direction position signal Mirror master switch R or L Mirror control switch RIGHT or LEFT Voltage fluctuates between 0 and 5 V
      z9-5(RVC)-z9-14(RE1) R-W - GR Power source for mirror position sensor Engine switch on (ACC) or off during sleep mode Below 1 V
      Engine switch on (IG) 3.5 to 5.5 V
      N1-21 (ECI+)-N1-22 (ECI-) R-L EC mirror signal Electrochromic mirror system is operating 1.05 to 1.35 V
      Electrochromic mirror system is not operating Below 1 V
      z9-7(EC+)-z9-15(EC-) B-G - B-R 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. CHECK OUTER MIRROR SWITCH ASSEMBLY 
    Fig 3: Identifying Outer Mirror Switch Assembly Connector
    G04952270Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L6 switch connector.
    2. Measure the voltage and resistance of the wire harness side connector.
      OUTER MIRROR SWITCH ASSEMBLY VOLTAGE AND RESISTANCE

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L6-1 (E) - Body ground W-B - Body ground Ground Always Below Ml
      L6-12(B)-L6-1 (E) B-W-B Battery (ECU power source) Always 11 to 14 V
      L6-11 (IG) - L6-1 (E) G-W-B Ignition power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V

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

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