Terminals Of Ecu

Fig 1: Identifying Main Body ECU Connector Terminals (Driver Side Junction Block)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the A68, DA, L11, L12 and L13 ECU connectors.
2. Measure the resistance and voltage according to the value(s) in the table below.

   Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
   L11-1 (GND3) - DA-41 (GND1)	W-B - W-B	Ground	Always	Below 1 Ω
   DA-40 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   DA-40 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   L12-1 (AM2) - Body ground	W - Body ground	Power supply	Always	11 to 14 V
   L13-6 (AM1) - Body ground	W - Body ground	Power supply	Always	11 to 14 V

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

3. Reconnect the A68, DA, L11, L12 and L13 ECU connectors.
4. Measure the voltage according to the value(s) in the table below.

   Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
   L11-3 (TMSW) - Body ground	W - Body ground	Luggage compartment door opener cancel switch signal	Luggage compartment door opener cancel switch is ON	Below 1 V
   			Engine switch off, all doors closed and luggage compartment door opener cancel switch is OFF	Pulse generation (see Fig 2 orFig 3 )
   L13-26 (TSW) - Body ground	L - Body ground	Luggage compartment door opener switch signal	Luggage compartment door opener switch is ON	Below 1 V
   			Engine switch off, all doors closed and luggage compartment door opener switch is OFF	Pulse generation (see Fig 4 or Fig 5 )

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

5. Using an oscilloscope, check the waveform 1.
   Fig 2: Identifying Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   WAVEFORM 1 (REFERENCE):
   
   

   Item	Content
   Terminal No. (Symbols)	L11-3 (TMSW) - Body ground
   Tool Setting	5 V/DIV., 20 ms/DIV.
   Condition	Engine switch off, all doors closed and luggage compartment door opener cancel switch is OFF

6. Using an oscilloscope, check the waveform 2.
   Fig 3: Identifying Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   WAVEFORM 2 (REFERENCE):
   
   

   Item	Content
   Terminal No. (Symbols)	L11-3 (TMSW) - Body ground
   Tool Setting	5 V/DIV., 20 ms/DIV.
   Condition	Engine switch off, all doors closed and luggage compartment door opener cancel switch is OFF

7. Using an oscilloscope, check the waveform 3.
   Fig 4: Identifying Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   WAVEFORM 3 (REFERENCE):
   
   

   Item	Content
   Terminal No. (Symbols)	L13-26 (TSW) - Body ground
   Tool Setting	5 V/DIV., 20 ms/DIV.
   Condition	Engine switch off, all doors closed and luggage compartment door opener switch is OFF

8. Using an oscilloscope, check the waveform 4.
   Fig 5: Identifying Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   WAVEFORM 4 (REFERENCE):
   
   

   Item	Content
   Terminal No. (Symbols)	L13-26 (TSW) - Body ground
   Tool Setting	5 V/DIV., 20 ms/DIV.
   Condition	Engine switch off, all doors closed and luggage compartment door opener switch is OFF

Fig 6: Identifying Luggage Room Junction Block (Rear Junction Block ECU) Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the LA, LD, and LG junction block connectors.
2. Measure the resistance and voltage according to the value(s) in the table below.

   Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
   LA-29 (SG) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   LA-43 (PGND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   LD-4 (MPXB) - LA-29 (SG)	R - W-B	MPXB power supply	Always	11 to 14 V
   LG-1 (FUEL) - LA-29 (SG)	W - W-B	Fuel power supply	Always	11 to 14 V

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

3. Reconnect the LA, LD, and LG junction block connectors.
4. Measure the voltage according to the value(s) in the table below.

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