REAR SUNSHADE SYSTEM TERMINALS OF ECU


  1. CHECK REAR WINDOW SHADE ASSEMBLY (REAR SUNSHADE RELAY)

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    1. Disconnect the U29 rear window shade assembly connector.

    2. Measure the voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      U29-2 (B) - Body ground P - Body ground Power source Within 60 seconds after power switch turned off, or power switch turned on (IG) again after 60 seconds have elapsed from time power switch turned off 11 to 14 V

    3. Reconnect the U29 rear window shade assembly connector.

    4. Measure the voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      U29-5 (RSW) - Body ground G - Body ground Rear sunshade operation signal

      • Within 60 seconds after power switch turned off, or power switch turned on (IG) again after 60 seconds have elapsed from time power switch turned off

      • Rear control switch (rear sunshade switch) pushed

      		 Below 1 V
      U29-5 (RSW) - Body ground G - Body ground Rear sunshade operation signal

      • Within 60 seconds after power switch turned off, or power switch turned on (IG) again after 60 seconds have elapsed from time power switch turned off

      • Rear control switch (rear sunshade switch) not pushed

      		 11 to 14 V
      U29-4 (SW) - Body ground L - Body ground Rear sunshade operation signal

      • Within 60 seconds after power switch turned off, or power switch turned on (IG) again after 60 seconds have elapsed from time power switch turned off

      • Rear sunshade switch pushed

      		 Below 1 V
      U29-4 (SW) - Body ground L - Body ground Rear sunshade operation signal

      • Within 60 seconds after power switch turned off, or power switch turned on (IG) again after 60 seconds have elapsed from time power switch turned off

      • Rear sunshade switch not pushed

      		 11 to 14 V
      U29-3 (REV) - Body ground GR - Body ground Reverse position signal

      • Within 60 seconds after power switch turned off, or power switch turned on (IG) again after 60 seconds have elapsed from time power switch turned off

      • Shift lever in P

      		 11 to 14 V
      U29-3 (REV) - Body ground GR - Body ground Reverse position signal

      • Within 60 seconds after power switch turned off, or power switch turned on (IG) again after 60 seconds have elapsed from time power switch turned off

      • Shift lever in R

      		 Below 1 V

  2. CHECK REAR CONTROL SWITCH (w/ Rear Control Switch)

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    1. Disconnect the Z1 rear control switch connector.

    2. Measure the voltage and resistance of the wire harness side connector.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      Z1-1 (+B) - Body ground R - Body ground Power source Always 11 to 14 V
      Z1-7 (IG+) - Body ground L - Body ground Power source (IG) Power switch on (IG) 11 to 14 V
      Z1-5 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

  3. CHECK COWL SIDE JUNCTION BLOCK LH, MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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    Text in Illustration
    *1 Main Body ECU (Multiplex Network Body ECU) - -

    1. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH Click here.

    2. Connect the cowl side junction block LH connectors.

    3. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A-30 (BECU) - Body ground - Power source Always 11 to 14 V
      A-32 (IG) - Body ground - Power source (IG) Power switch on (IG) 11 to 14 V
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω

    4. Install the main body ECU (multiplex network body ECU) Click here.

    5. Measure the voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      N12-15 (REV) - Body ground Y - Body ground Reverse position signal

      • Within 60 seconds after power switch turned off, or power switch turned on (IG) again after 60 seconds have elapsed from time power switch turned off

      • Shift lever in P

      		 11 to 14 V
      N12-15 (REV) - Body ground Y - Body ground Reverse position signal

      • Within 60 seconds after power switch turned off, or power switch turned on (IG) again after 60 seconds have elapsed from time power switch turned off

      • Shift lever in R

      		 Below 1 V
      N12-2 (KOFF) - Body ground G - Body ground Power source

      • Within 60 seconds after power switch turned off, or power switch turned on (IG) again after 60 seconds have elapsed from time power switch turned off

      • Rear sunshade switch assembly on

      • Rear control switch (rear sunshade switch) on

      		 Below 1 V
      N13-13 (CANL) W CAN communication signal - -
      N13-14 (CANH) V CAN communication signal - -