Terminals Of Ecu [06/2015 - ]

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

   Refer to REMOVAL [06/2015 - 11/2018] , or refer to REMOVAL [11/2018 - ]

2. Reconnect the instrument panel junction block assembly connector.
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
   MB-11 (GND1) - Body ground	-	Ground	Always	Below 1 Ω
   MB-30 (ACC) - Body ground	-	ACC power supply	Power switch on (ACC)	11 to 14 V
   			Power switch off	Below 1 V
   MB-31 (BECU) - Body ground	-	Auxiliary battery power supply	Always	11 to 14 V
   MB-32 (IG) - Body ground	-	IG power supply	Power switch on (IG)	11 to 14 V
   			Power switch off	Below 1 V

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

4. Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.

   Refer to INSTALLATION [06/2015 - 11/2018] , or refer to INSTALLATION [11/2018 - ]

5. Measure the voltage and check for pulses according to the value(s) in the table below.

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   G5-5 (TSW) - Body ground	W - Body ground	Luggage door opening switch signal	Luggage door opening switch on	Below 1 V
   			Power switch off, all doors closed and luggage door opening switch off	Pulse generation
   G6-17 (TMSW) - Body ground	R - Body ground	Luggage door opening cancel switch signal	Luggage door opening cancel switch on	Below 1 V
   			Power switch off, all doors closed and luggage door opening cancel switch off	Pulse generation
   4D-16 - Body ground	SB - Body ground	Luggage compartment door courtesy light switch assembly input signal	Luggage compartment door open	Below 1 V
   			Luggage compartment door closed	11 to 14 V
   4D-1 - Body ground	LA-B - Body ground	Luggage compartment door lock relay output signal	Luggage door opening switch on	Below 1 V
   			Luggage door opening switch off	11 to 14 V

   If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may be malfunctioning.

Refer to TERMINALS OF ECU [06/2015 - ]