Toyota Venza: Terminals Of Ecu

Toyota Venza Service Manual / Theft Deterrent / Keyless Entry / Smart Key System(for Entry Function) / Terminals Of Ecu

TERMINALS OF ECU

1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Disconnect the D25 certification ECU (smart key ECU assembly) connector.

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

HINT:

Measure the values on the wire harness side with connector disconnected.

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
D25-1 (+B) - Body ground	G - Body ground	+B power supply	Always	11 to 14 V
D25-15 (E) - Body ground	B - Body ground	Ground	Always	Below 1 Ω
D25-17 (CUTB) - Body ground	L - Body ground	Dark current cut fuse pin input signal	Always	11 to 14 V

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

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

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
D25-3 (CLG1) - D25-15 (E)	G - B	Door electrical key oscillator (for driver side) sensor signal	Engine switch off All door closed Key not in cabin	No pulse generation
D25-3 (CLG1) - D25-15 (E)	G - B	Door electrical key oscillator (for driver side) sensor signal	Engine switch off All door closed Key not in cabin All doors locked by wireless lock function	Pulse generation
D25-4 (CG1B) - D25-15 (E)	R - B	Door electrical key oscillator (for driver side) sensor signal	Engine switch off All door closed Key not in cabin	No pulse generation
D25-4 (CG1B) - D25-15 (E)	R - B	Door electrical key oscillator (for driver side) sensor signal	Engine switch off All door closed Key not in cabin All doors locked by wireless lock function	Pulse generation
D25-5 (CLG2) - D25-15 (E)	P - B	Door electrical key oscillator (for front passenger side) sensor signal	Engine switch off All door closed Key not in cabin	No pulse generation
D25-5 (CLG2) - D25-15 (E)	P - B	Door electrical key oscillator (for front passenger side) sensor signal	Engine switch off All door closed Key not in cabin All doors locked by wireless lock function	Pulse generation
D25-6 (CG2B) - D25-15 (E)	V - B	Door electrical key oscillator (for front passenger side) sensor signal	Engine switch off All door closed Key not in cabin	No pulse generation
D25-6 (CG2B) - D25-15 (E)	V - B	Door electrical key oscillator (for front passenger side) sensor signal	Engine switch off All door closed Key not in cabin All doors locked by wireless lock function	Pulse generation
D25-7 (CLG5) - D25-15 (E)	BR - B	Indoor electrical key oscillator (for front floor) sensor signal	Engine switch off All door closed Key not in cabin Door outside handle assembly (lock sensor) not touched	No pulse generation
D25-7 (CLG5) - D25-15 (E)	BR - B	Indoor electrical key oscillator (for front floor) sensor signal	Engine switch off All door closed Key not in cabin Door outside handle assembly (lock sensor) touched	Pulse generation
D25-8 (CG5B) - D25-15 (E)	R - B	Indoor electrical key oscillator (for front floor) sensor signal	Engine switch off All door closed Key not in cabin Door outside handle assembly (lock sensor) not touched	No pulse generation
D25-8 (CG5B) - D25-15 (E)	R - B	Indoor electrical key oscillator (for front floor) sensor signal	Engine switch off All door closed Key not in cabin Door outside handle assembly (lock sensor) touched	Pulse generation
D25-16 (IG) - Body ground	R - Body ground	IG power supply	Engine switch off	Below 1 V
D25-16 (IG) - Body ground	R - Body ground	IG power supply	Engine switch on (IG)	11 to 14 V
D25-18 (TSW1) - D25-15 (E)	R - B	Lock sensor (for driver side) detection signal	Engine switch off All door closed Lock sensor (for driver side) not touched	Pulse generation
D25-18 (TSW1) - D25-15 (E)	R - B	Lock sensor (for driver side) detection signal	Engine switch off All door closed Lock sensor (for driver side) touched	Below 2 V
D25-19 (TSW2) - D25-15 (E)	Y - B	Lock sensor (for front passenger side) detection signal	Engine switch off All door closed Lock sensor (for front passenger side) not touched	Pulse generation
D25-19 (TSW2) - D25-15 (E)	Y - B	Lock sensor (for front passenger side) detection signal	Engine switch off All door closed Lock sensor (for front passenger side) touched	Below 2 V
D25-20 (SEN1) - D25-15 (E)	LG - B	Touch sensor (for driver side) detection signal	Engine switch off All door closed Key not in detection area Touch sensor (for driver side) not touched	Pulse generation
D25-20 (SEN1) - D25-15 (E)	LG - B	Touch sensor (for driver side) detection signal	Engine switch off All door closed Key not in detection area Touch sensor (for driver side) touched	Below 2 V
D25-21 (SEN2) - D25-15 (E)	R - B	Touch sensor (for front passenger side) detection signal	Engine switch off All door closed Key not in detection area Touch sensor (for front passenger side) not touched	Pulse generation
D25-21 (SEN2) - D25-15 (E)	R - B	Touch sensor (for front passenger side) detection signal	Engine switch off All door closed Key not in detection area Touch sensor (for front passenger side) touched	Below 2 V
D25-22 (TSW5) - D25-15 (E)	G - B	Back door opener switch assembly (opener switch) signal	Back door opener switch assembly (opener switch) not pushed	Pulse generation
D25-22 (TSW5) - D25-15 (E)	G - B	Back door opener switch assembly (opener switch) signal	Back door opener switch assembly (opener switch) pushed	Below 1 V
D25-1 (TSW6) - D25-15 (E)	SB - B	Back door opener switch assembly (lock switch) signal	Back door opener switch assembly (lock switch) not pushed	Pulse generation
D25-1 (TSW6) - D25-15 (E)	SB - B	Back door opener switch assembly (lock switch) signal	Back door opener switch assembly (lock switch) pushed	Below 1 V
D25-24 (CLG6) - D25-15 (E)	R - B	Indoor electrical key oscillator (for center floor) sensor signal	Engine switch off All door closed Key not in cabin Door outside handle assembly (lock sensor) not touched	No pulse generation
D25-24 (CLG6) - D25-15 (E)	R - B	Indoor electrical key oscillator (for center floor) sensor signal	Engine switch off All door closed Key not in cabin Door outside handle assembly (lock sensor) touched	Pulse generation
D25-25 (CG6B) - D25-15 (E)	G - B	Indoor electrical key oscillator (for center floor) sensor signal	Engine switch off All door closed Key not in cabin Door outside handle assembly (lock sensor) not touched	No pulse generation
D25-25 (CG6B) - D25-15 (E)	G - B	Indoor electrical key oscillator (for center floor) sensor signal	Engine switch off All door closed Key not in cabin Door outside handle assembly (lock sensor) touched	Pulse generation
D25-26 (CLG7) - D25-15 (E)	L - B	Indoor electrical key oscillator (for rear floor) sensor signal	Engine switch off All door closed Key not in cabin Door outside handle assembly (lock sensor) not touched	No pulse generation
D25-26 (CLG7) - D25-15 (E)	L - B	Indoor electrical key oscillator (for rear floor) sensor signal	Engine switch off All door closed Key not in cabin Door outside handle assembly (lock sensor) touched	Pulse generation
D25-27 (CG7B) - D25-15 (E)	LG - B	Indoor electrical key oscillator (for rear floor) sensor signal	Engine switch off All door closed Key not in cabin Door outside handle assembly (lock sensor) not touched	No pulse generation
D25-27 (CG7B) - D25-15 (E)	LG - B	Indoor electrical key oscillator (for rear floor) sensor signal	Engine switch off All door closed Key not in cabin Door outside handle assembly (lock sensor) touched	Pulse generation
D25-32 (POS1) - D25-15 (E)	Y - B	Lock or unlock sensor (for driver side) output signal	Engine switch off	9 to 14 V
D25-32 (POS1) - D25-15 (E)	Y - B	Lock or unlock sensor (for driver side) output signal	Engine switch on (IG)	Below 2 V
D25-33 (POS2) - D25-15 (E)	L - B	Lock or unlock sensor (for front passenger side) output signal	Engine switch off	9 to 14 V
D25-33 (POS2) - D25-15 (E)	L - B	Lock or unlock sensor (for front passenger side) output signal	Engine switch on (IG)	Below 2 V
D26-5 (RC0) - D25-15 (E)	Y - B	Door control receiver power source	Engine switch off Lock or unlock switch on key not pushed	Below 1 V
D26-5 (RC0) - D25-15 (E)	Y - B	Door control receiver power source	Engine switch off Lock or unlock switch on key pushed	4.5 to 5.5 V
D26-15 (RDA) - D25-15 (E)	R - B	Door control receiver data input signal	Engine switch off All doors closed Transmitter switch not pressed	11 to 14 V pulse generation at regular intervals
D26-15 (RDA) - D25-15 (E)	R - B	Door control receiver data input signal	Engine switch off All doors closed Transmitter switch pressed	Pulse generation
D26-16 (RSSI) - D25-15 (E)	P - B	Door control receiver radio wave existence signal	Engine switch off All doors locked Lock or unlock switch on key not pushed	11 to 14 V
D26-16 (RSSI) - D25-15 (E)	P - B	Door control receiver radio wave existence signal	Engine switch off All doors locked Lock or unlock switch on key pushed	Below 2 V
D26-19 (CLG8) - D25-15 (E)	L - B	Outside electrical key oscillator (for rear side) sensor signal	Engine switch off All doors closed Back door opener switch assembly off	No pulse generation
D26-19 (CLG8) - D25-15 (E)	L - B	Outside electrical key oscillator (for rear side) sensor signal	Engine switch off All doors closed Back door opener switch assembly on	Pulse generation
D26-20 (CG8B) - D25-15 (E)	Y - B	Outside electrical key oscillator (for rear side) sensor signal	Engine switch off All doors closed Back door opener switch assembly off	No pulse generation
D26-20 (CG8B) - D25-15 (E)	Y - B	Outside electrical key oscillator (for rear side) sensor signal	Engine switch off All doors closed Back door opener switch assembly on	Pulse generation

If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.

2. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the 2C and 2F main body ECU (driver side junction block assembly) connectors.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
2C-24 (BECU) - Body ground	L - Body ground	Battery power supply	Always	11 to 14 V
2C-30 (ALTB) - Body ground	BR - Body ground	Battery power supply	Always	11 to 14 V
2F-16 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

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

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

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
D50-24 (DCTY) - Body ground	V - Body ground	Driver side door courtesy switch input	Driver door open	Below 1 V
D50-24 (DCTY) - Body ground	V - Body ground	Driver side door courtesy switch input	Driver door close	Pulse generation
D49-21 (PCTY) - Body ground	V - Body ground	Front passenger side door courtesy switch input	Front passenger side door open	Below 1 V
D49-21 (PCTY) - Body ground	V - Body ground	Front passenger side door courtesy switch input	Front passenger side door close	Pulse generation
2O-19 (LCTY) - Body ground	R - Body ground	Rear door LH courtesy light switch input	Rear door LH open	Below 1 V
2O-19 (LCTY) - Body ground	R - Body ground	Rear door LH courtesy light switch input	Rear door LH close	Pulse generation
D49-7 (RCTY) - Body ground	GR - Body ground	Rear door RH courtesy light switch input	Rear door RH open	Below 1 V
D49-7 (RCTY) - Body ground	GR - Body ground	Rear door RH courtesy light switch input	Rear door RH close	Pulse generation
D49-25 (BCTY) - Body ground*1	GR - Body ground	Back door courtesy light switch input	Back door open	Below 1 V
D49-25 (BCTY) - Body ground*1	GR - Body ground	Back door courtesy light switch input	Back door courtesy light switch on and back door closed	Pulse generation
D49-25 (BCTY) - Body ground*1	GR - Body ground	Back door courtesy light switch input	Back door open	Below 1 V
D49-25 (BCTY) - Body ground*1	GR - Body ground	Back door courtesy light switch input	Back door courtesy light switch off and back door closed	Pulse generation
D49-25 (BCTY) - Body ground*2	GR - Body ground	Back door courtesy light switch input	Back door open	Below 1 V
D49-25 (BCTY) - Body ground*2	GR - Body ground	Back door courtesy light switch input	Back door closed	Pulse generation
2K-2 (ACT+) - Body Ground	R - Body Ground	Door lock motor lock drive output (Driver side)	Power window regulator master switch assembly or driver door key cylinder off	Below 1 V
2K-2 (ACT+) - Body Ground	R - Body Ground	Door lock motor lock drive output (Driver side)	Power window regulator master switch assembly or driver door key cylinder lock	11 to 14 V
D50-5 (ACTD) - Body Ground	LG - Body Ground	Door lock motor unlock drive output (Driver side)	Power window regulator master switch assembly or driver door key cylinder off	Below 1 V
D50-5 (ACTD) - Body Ground	LG - Body Ground	Door lock motor unlock drive output (Driver side)	Power window regulator master switch assembly or driver door key cylinder unlock	11 to 14 V
2J-1 (ACT+) - Body Ground	R - Body Ground	Door lock motor lock drive output (Front passenger side)	Power window regulator master switch assembly or driver door key cylinder off	Below 1 V
2J-1 (ACT+) - Body Ground	R - Body Ground	Door lock motor lock drive output (Front passenger side)	Power window regulator master switch assembly or driver door key cylinder lock	11 to 14 V
2J-2 (ACT-) - Body Ground	SB - Body Ground	Door lock motor unlock drive output (Front passenger side)	Power window regulator master switch assembly off	Below 1 V
2J-2 (ACT-) - Body Ground	SB - Body Ground	Door lock motor unlock drive output (Front passenger side)	Power window regulator master switch assembly unlock	11 to 14 V
2F-11 (ACT+) - Body Ground	LG - Body Ground	Door lock motor lock drive output (Rear right door)	Power window regulator master switch assembly or driver door key cylinder off	Below 1 V
2F-11 (ACT+) - Body Ground	LG - Body Ground	Door lock motor lock drive output (Rear right door)	Power window regulator master switch assembly or driver door key cylinder lock	11 to 14 V
2F-30 (ACT-) - Body Ground	R- Body Ground	Door lock motor unlock drive output (Rear right door)	Power window regulator master switch assembly off	Below 1 V
2F-30 (ACT-) - Body Ground	R- Body Ground	Door lock motor unlock drive output (Rear right door)	Power window regulator master switch assembly unlock	11 to 14 V
2O-17 (ACT+) - Body Ground	GR - Body Ground	Door lock motor lock drive output (Rear left door)	Power window regulator master switch assembly or driver door key cylinder off	Below 1 V
2O-17 (ACT+) - Body Ground	GR - Body Ground	Door lock motor lock drive output (Rear left door)	Power window regulator master switch assembly or driver door key cylinder lock	11 to 14 V
2O-6 (ACT-) - Body Ground	R - Body Ground	Door lock motor unlock drive output (Rear left door)	Power window regulator master switch assembly off	Below 1 V
2O-6 (ACT-) - Body Ground	R - Body Ground	Door lock motor unlock drive output (Rear left door)	Power window regulator master switch assembly unlock	11 to 14 V
D50-9 (LSWD) - Body Ground	P - Body Ground	Driver side door position switch input	Driver door unlock	Below 1 V
D50-9 (LSWD) - Body Ground	P - Body Ground	Driver side door position switch input	Driver door lock	Pulse generation
D49-27 (LSWP) - Body ground	P - Body ground	Front passenger side door lock position switch input	Front passenger side door unlock	Below 1 V
D49-27 (LSWP) - Body ground	P - Body ground	Front passenger side door lock position switch input	Front passenger side door lock	Pulse generation
2O-5 (LSR) - Body ground	BR - Body ground	Rear door LH lock position switch input	Rear door LH unlock	Below 1 V
2O-5 (LSR) - Body ground	BR - Body ground	Rear door LH lock position switch input	Rear door LH lock	Pulse generation
2F-5 (LSR) - Body ground	Y - Body ground	Rear door RH lock position switch input	Rear door RH unlock	Below 1 V
2F-5 (LSR) - Body ground	Y - Body ground	Rear door RH lock position switch input	Rear door RH lock	Pulse generation

*1: w/o Back Door Closer System
*2: w/ Back Door Closer System

If the result is not as specified, the main body ECU (driver side junction block assembly) may have a malfunction.

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