POWER BACK DOOR SYSTEM TERMINALS OF ECU

CHECK MULTIPLEX NETWORK DOOR ECU

1. Disconnect the U18 and U19 multiplex network door ECU connectors.

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

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   U18-1 (ECUB) - Body ground	W - Body ground	Battery power supply	Always	11 to 14 V
   U18-7 (IG) - Body ground	W - Body ground	IG power supply	Ignition switch ON	11 to 14 V
   			Ignition switch off	Below 1 V
   U19-7 (GND) - Body ground	W-B - Body ground	Body ground	Always	Below 1 Ω
   U19-8 (B) - Body ground	W - Body ground	Battery power supply	Always	11 to 14 V

3. Reconnect the U18 and U19 multiplex network door ECU connectors.

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

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   U18-2 (DSG2) - Body ground	P - Body ground	Power back door unit assembly set RH (door sensor) ground	Always	Below 1 V
   U18-3 (DSV2) - Body ground	G - Body ground	Power back door unit assembly set RH (door sensor) power supply	Always	7 V or higher
   U18-5 (BZR+) - Body ground	V - Body ground	Wireless door lock buzzer signal	Power back door warning buzzer sounding	Pulse generation
   			Power back door warning buzzer not sounding	Below 1 V
   U18-6 (BDDN) - Body ground	LG - Body ground	Door control switch signal	Door control switch on	Below 1 V
   			Door control switch off	Pulse generation
   U18-11 (DSG) - Body ground	P - Body ground	Power back door unit assembly set LH (door sensor) ground	Always	Below 1 V
   U18-12 (DSV) - Body ground	G - Body ground	Power back door unit assembly set LH (door sensor) power supply	Always	7 V or higher
   U18-16 (OSR) - U18-17 (OSE)	SB - GR	Power back door sensor assembly RH signal	Power back door sensor assembly RH not pressed	4 to 6 V
   			Power back door sensor assembly RH pressed	Below 1 V
   U18-18 (OSL) - U18-17 (OSE)	L - GR	Power back door sensor assembly LH signal	Power back door sensor assembly LH not pressed	4 to 6 V
   			Power back door sensor assembly LH pressed	Below 1 V
   U18-20 (MSW) - Body ground	W - Body ground	Power back door main switch signal	Power back door main switch on	Below 1 V
   			Power back door main switch off	Pulse generation
   U18-22 (DS2) - Body ground	R - Body ground	Power back door unit assembly set LH (door sensor) signal	Power back door not operating	7 V or higher
   			Power back door operating	Pulse generation (See waveform 2)
   U18-23 (DS1) - Body ground	L - Body ground	Power back door unit assembly set LH (door sensor) signal	Power back door not operating	7 V or higher
   			Power back door operating	Pulse generation (See waveform 1)
   U18-25 (DS22) - Body ground	R - Body ground	Power back door unit assembly set RH (door sensor) signal	Power back door not operating	7 V or higher
   			Power back door operating	Pulse generation (See waveform 2)
   U18-26 (DS12) - Body ground	L - Body ground	Power back door unit assembly set RH (door sensor) signal	Power back door not operating	7 V or higher
   			Power back door operating	Pulse generation (See waveform 1)
   U19-10 (DC+) - U19-9 (DC-)	B - R	Back door lock assembly (back door lock motor) circuit	Back door lock motor operating	11 to 14 V

   1. 

      Using an oscilloscope, check waveform 1.

      Table 1. Waveform 1 (Reference)

      Item	Condition
      Tester connection	U18-23 (DS1) - Body ground U18-26 (DS12) - Body ground
      Tool setting	2 V/DIV., 2 ms./DIV.
      Vehicle condition	Power back door operating

      Tip:

      The period changes in accordance to the speed at which the power back door is opened and closed.

   2. 

      Using an oscilloscope, check waveform 2.

      Table 2. Waveform 2 (Reference)

      Item	Condition
      Tester connection	U18-22 (DS2) - Body ground U18-25 (DS22) - Body ground
      Tool setting	2 V/DIV., 2 ms./DIV.
      Vehicle condition	Power back door operating

      Tip:

      The period changes in accordance to the speed at which the power back door is opened and closed.

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Entry and Start System)

1. Disconnect the G82 and G84 certification ECU (smart key ECU assembly) connectors.

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

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   G82-2 (+B) - Body ground	W - Body ground	Battery power supply	Always	11 to 14 V
   G82-10 (CUTB) - Body ground	P - Body ground	Battery power supply	Always	11 to 14 V
   G84-5 (IG) - Body ground	LG - Body ground	IG power supply	Ignition switch ON	11 to 14 V
   			Ignition switch off	Below 1 V
   G82-11 (E) - Body ground	BR - Body ground	Body ground	Always	Below 1 Ω

3. Reconnect the G82 and G84 certification ECU (smart key ECU assembly) connectors.

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

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   G83-27 (TSW5) - Body ground	Y - Body ground	Back door opener switch assembly signal	Back door opener switch assembly off	Pulse generation
   			Back door opener switch assembly on	Below 1 V

CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

*1

Main Body ECU (Multiplex Network Body ECU)

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1. Remove the main body ECU (multiplex network body ECU).

   for LHD:Click here

   for RHD:Click here

2. Connect the instrument panel junction block assembly 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	None - Body ground	Battery power supply	Always	11 to 14 V
   A-29 (ACC) -Body ground	None - Body ground	ACC power supply	Ignition switch ACC	11 to 14 V
   			Ignition switch off	Below 1 V
   A-32 (IG) - Body ground	None - Body ground	IG power supply	Ignition switch ON	11 to 14 V
   			Ignition switch off	Below 1 V
   A-11 (GND1) - Body ground	None - Body ground	Body ground	Always	Below 1 Ω

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

   for LHD:Click here

   for RHD: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
   G78-23 (BDSU) - Body ground*	R - Body ground	Back door opener switch assembly signal	Back door opener switch assembly off	Pulse generation
   			Back door opener switch assembly on	Below 1 V
   G79-27 (PBDS) - Body ground	R - Body ground	Back door control switch signal	Back door control switch off	Pulse generation
   			Back door control switch on	Below 1 V

   *: w/o Entry and Start System