THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): TERMINALS OF ECU; 2016 - 2020 MY Sienna [12/2015

Last Modified: 04-05-2023	6.11:8.1.0	Doc ID: RM100000000VJJX
Model Year Start: 2016	Model: Sienna	Prod Date Range: [12/2015 - ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): TERMINALS OF ECU; 2016 - 2020 MY Sienna [12/2015 - ]

TERMINALS OF ECU

1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Disconnect the D88 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 the connector disconnected.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
D88-1 (+B) - Body ground	G - Body ground	+B power supply	Always	11 to 14 V
D88-15 (E) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
D88-17 (CUTB) - Body ground	B - 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.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
D88-3 (CLG1) - D88-15 (E)	G - W-B	Door electrical key oscillator (for driver side) sensor signal	Engine switch off All doors closed Key not in cabin	No pulse generation
D88-3 (CLG1) - D88-15 (E)	G - W-B	Door electrical key oscillator (for driver side) sensor signal	Engine switch off All doors closed Key not in cabin All doors locked by wireless lock function	Pulse generation
D88-4 (CG1B) - D88-15 (E)	R - W-B	Door electrical key oscillator (for driver side) sensor signal	Engine switch off All doors closed Key not in cabin	No pulse generation
D88-4 (CG1B) - D88-15 (E)	R - W-B	Door electrical key oscillator (for driver side) sensor signal	Engine switch off All doors closed Key not in cabin All doors locked by wireless lock function	Pulse generation
D88-5 (CLG2) - D88-15 (E)	P - W-B	Door electrical key oscillator (for front passenger side) sensor signal	Engine switch off All doors closed Key not in cabin	No pulse generation
D88-5 (CLG2) - D88-15 (E)	P - W-B	Door electrical key oscillator (for front passenger side) sensor signal	Engine switch off All doors closed Key not in cabin All doors locked by wireless lock function	Pulse generation
D88-6 (CG2B) - D88-15 (E)	V - W-B	Door electrical key oscillator (for front passenger side) sensor signal	Engine switch off All doors closed Key not in cabin	No pulse generation
D88-6 (CG2B) - D88-15 (E)	V - W-B	Door electrical key oscillator (for front passenger side) sensor signal	Engine switch off All doors closed Key not in cabin All doors locked by wireless lock function	Pulse generation
D88-7 (CLG5) - D88-15 (E)	R - W-B	Indoor electrical key oscillator (for front floor) sensor signal	Engine switch off All doors closed Key not in cabin Door outside handle assembly (lock sensor) not touched	No pulse generation
D88-7 (CLG5) - D88-15 (E)	R - W-B	Indoor electrical key oscillator (for front floor) sensor signal	Engine switch off All doors closed Key not in cabin Door outside handle assembly (lock sensor) touched	Pulse generation
D88-8 (CG5B) - D88-15 (E)	W - W-B	Indoor electrical key oscillator (for front floor) sensor signal	Engine switch off All doors closed Key not in cabin Door outside handle assembly (lock sensor) not touched	No pulse generation
D88-8 (CG5B) - D88-15 (E)	W - W-B	Indoor electrical key oscillator (for front floor) sensor signal	Engine switch off All doors closed Key not in cabin Door outside handle assembly (lock sensor) touched	Pulse generation
D88-16 (IG) - Body ground	B - Body ground	IG power supply	Engine switch off	Below 1 V
D88-16 (IG) - Body ground	B - Body ground	IG power supply	Engine switch on (IG)	11 to 14 V
D88-18 (TSW1) - D88-15 (E)	B - W-B	Lock sensor (for driver side) detection signal	Engine switch off All doors closed Lock sensor (for driver side) not touched	Pulse generation
D88-18 (TSW1) - D88-15 (E)	B - W-B	Lock sensor (for driver side) detection signal	Engine switch off All doors closed Lock sensor (for driver side) touched	Below 2 V
D88-19 (TSW2) - D88-15 (E)	Y - W-B	Lock sensor (for front passenger side) detection signal	Engine switch off All doors closed Lock sensor (for front passenger side) not touched	Pulse generation
D88-19 (TSW2) - D88-15 (E)	Y - W-B	Lock sensor (for front passenger side) detection signal	Engine switch off All doors closed Lock sensor (for front passenger side) touched	Below 2 V
D88-20 (SEN1) - D88-15 (E)	GR - W-B	Touch sensor (for driver side) detection signal	Engine switch off All doors closed Key not in detection area Touch sensor (for driver side) not touched	Pulse generation
D88-20 (SEN1) - D88-15 (E)	GR - W-B	Touch sensor (for driver side) detection signal	Engine switch off All doors closed Key not in detection area Touch sensor (for driver side) touched	Below 2 V
D88-21 (SEN2) - D88-15 (E)	BR - W-B	Touch sensor (for front passenger side) detection signal	Engine switch off All doors closed Key not in detection area Touch sensor (for front passenger side) not touched	Pulse generation
D88-21 (SEN2) - D88-15 (E)	BR - W-B	Touch sensor (for front passenger side) detection signal	Engine switch off All doors closed Key not in detection area Touch sensor (for front passenger side) touched	Below 2 V
D88-22 (TSW5) - D88-15 (E)	L - W-B	Back door opener switch assembly (opener switch) signal	Back door opener switch assembly (opener switch) not pushed	Pulse generation
D88-22 (TSW5) - D88-15 (E)	L - W-B	Back door opener switch assembly (opener switch) signal	Back door opener switch assembly (opener switch) pushed	Below 1 V
D88-23 (TSW6) - D88-15 (E)	Y - W-B	Back door opener switch assembly (lock switch) signal	Back door opener switch assembly (lock switch) not pushed	Pulse generation
D88-23 (TSW6) - D88-15 (E)	Y - W-B	Back door opener switch assembly (lock switch) signal	Back door opener switch assembly (lock switch) pushed	Below 1 V
D88-24 (CLG6) - D88-15 (E)	V - W-B	Indoor electrical key oscillator (for center floor) sensor signal	Engine switch off All doors closed Key not in cabin Door outside handle assembly (lock sensor) not touched	No pulse generation
D88-24 (CLG6) - D88-15 (E)	V - W-B	Indoor electrical key oscillator (for center floor) sensor signal	Engine switch off All doors closed Key not in cabin Door outside handle assembly (lock sensor) touched	Pulse generation
D88-25 (CG6B) - D88-15 (E)	P - W-B	Indoor electrical key oscillator (for center floor) sensor signal	Engine switch off All doors closed Key not in cabin Door outside handle assembly (lock sensor) not touched	No pulse generation
D88-25 (CG6B) - D88-15 (E)	P - W-B	Indoor electrical key oscillator (for center floor) sensor signal	Engine switch off All doors closed Key not in cabin Door outside handle assembly (lock sensor) touched	Pulse generation
D88-26 (CLG7) - D88-15 (E)	L - W-B	Indoor electrical key oscillator (for rear floor) sensor signal	Engine switch off All doors closed Key not in cabin Door outside handle assembly (lock sensor) not touched	No pulse generation
D88-26 (CLG7) - D88-15 (E)	L - W-B	Indoor electrical key oscillator (for rear floor) sensor signal	Engine switch off All doors closed Key not in cabin Door outside handle assembly (lock sensor) touched	Pulse generation
D88-27 (CG7B) - D88-15 (E)	LG - W-B	Indoor electrical key oscillator (for rear floor) sensor signal	Engine switch off All doors closed Key not in cabin Door outside handle assembly (lock sensor) not touched	No pulse generation
D88-27 (CG7B) - D88-15 (E)	LG - W-B	Indoor electrical key oscillator (for rear floor) sensor signal	Engine switch off All doors closed Key not in cabin Door outside handle assembly (lock sensor) touched	Pulse generation
D88-32 (POS1) - D88-15 (E)	Y - W-B	Lock or unlock sensor (for driver side) output signal	Engine switch off	9 to 14 V
D88-32 (POS1) - D88-15 (E)	Y - W-B	Lock or unlock sensor (for driver side) output signal	Engine switch on (IG)	Below 2 V
D88-33 (POS2) - D88-15 (E)	LG - W-B	Lock or unlock sensor (for front passenger side) output signal	Engine switch off	9 to 14 V
D88-33 (POS2) - D88-15 (E)	LG - W-B	Lock or unlock sensor (for front passenger side) output signal	Engine switch on (IG)	Below 2 V
D87-5 (RCO) - D88-15 (E)	V - W-B	Door control receiver power source	Engine switch off Lock or unlock switch on key not pushed	Below 1 V
D87-5 (RCO) - D88-15 (E)	V - W-B	Door control receiver power source	Engine switch off Lock or unlock switch on key pushed	4.5 to 5.5 V
D87-15 (RDA) - D88-15 (E)	Y - W-B	Door control receiver data input signal	Engine switch off, all doors closed and transmitter switch not pressed	11 to 14 V pulse generation at regular intervals
D87-15 (RDA) - D88-15 (E)	Y - W-B	Door control receiver data input signal	Engine switch off, all doors closed and transmitter switch pressed	Pulse generation
D87-16 (RSSI) - D88-15 (E)	R - W-B	Door control receiver electric wave existence signal	Engine switch off All doors locked Lock or unlock switch on key not pushed	11 to 14 V
D87-16 (RSSI) - D88-15 (E)	R - W-B	Door control receiver electric wave existence signal	Engine switch off All doors locked Lock or unlock switch on key pushed	Below 2 V
D87-19 (CLG8) - D88-15 (E)	P - W-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
D87-19 (CLG8) - D88-15 (E)	P - W-B	Outside electrical key oscillator (for rear side) sensor signal	Engine switch off All doors closed Back door opener switch assembly on	Pulse generation
D87-20 (CG8B) - D88-15 (E)	V - W-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
D87-20 (CG8B) - D88-15 (E)	V - W-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 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU

(a) Turn the engine switch off.

Instrument Panel Junction Block Assembly

(b) Remove the main body ECU from the instrument panel junction block assembly (See page ).

HINT:

The instrument panel junction block assembly connectors must all be connected.

Terminal No. (symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
2I-2 (FLCY) - Body ground	-	Front door courtesy light switch LH input	Front door LH CLOSED (off) → OPEN (on)	10 kΩ or higher → Below 1 Ω
2I-4 (FRCY) - Body ground	-	Front door courtesy light switch RH input	Front door RH CLOSED (off) → OPEN (on)	10 kΩ or higher → Below 1 Ω
2I-11 (GND1) - Body ground	-	Ground	Always	Below 1 Ω
2I-29 (ACC) - Body ground	-	Ignition power supply (ACC signal)	Engine switch ACC → off	11 to 14 V → Below 1 V
2I-30 (BECU) - Body ground	-	+B (power system signal system) power supply	Always	11 to 14 V
2I-31 (ALTB) - Body ground	-	+B (power system alternator system) power supply	Always	11 to 14 V
2I-32 (IG) - Body ground	-	Ignition power supply (IG signal)	Engine switch ON → off	11 to 14 V → Below 1 V
D12-3 (LCTY) - Body ground	GR - Body ground	Rear door courtesy light LH switch input	Rear door CLOSED (off) → OPEN (on)	10 kΩ or higher → Below 1 Ω
D13-6 (RCTY) - Body ground	L - Body ground	Rear door courtesy light RH switch input	Rear door CLOSED (off) → OPEN (on)	10 kΩ or higher → Below 1 Ω
D13-19 (BCTY) - Body ground	GR - Body ground	Back door courtesy light switch input	Back door CLOSED (off) → OPEN (on)	10 kΩ or higher → Below 1 Ω

If the result is not as specified, there may be a malfunction in the wire harness or the instrument panel junction block assembly.

(d) Reinstall the main body ECU (See page ).

Main Body ECU

(e) Reconnect the D12 and D13 main body ECU connectors.

(f) Measure the resistance according to the value(s) in the table below.

Terminal No. (symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
D12-3 (LCTY) - Body ground	GR - Body ground	Rear door courtesy light LH switch input	Rear door CLOSED (off) → OPEN (on)	10 kΩ or higher → Below 1Ω
D13-6 (RCTY) - Body ground	L - Body ground	Rear door courtesy light RH switch input	Rear door CLOSED (off) → OPEN (on)	10 kΩ or higher → Below 1Ω
D13-19 (BCTY) - Body ground	GR - Body ground	Back door courtesy light switch input	Back door CLOSED (off) → OPEN (on)	10 kΩ or higher → Below 1Ω

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

HINT:

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

(g) Reconnect the main body ECU connectors.

(h) 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
2D-2 (ACTD) - Body ground	R - Body ground	Driver side door lock motor unlock drive output	Multiplex network master switch (door control switch) or driver side door key cylinder off	Below 1 V
2D-2 (ACTD) - Body ground	R - Body ground	Driver side door lock motor unlock drive output	Multiplex network master switch (door control switch) or driver side door key cylinder unlocked	11 to 14 V
2D-3 (ACT+) - Body ground	P - Body ground	Door lock motor lock drive output (all doors)	Multiplex network master switch (door control switch) or driver side door key cylinder off	Below 1 V
2D-3 (ACT+) - Body ground	P - Body ground	Door lock motor lock drive output (all doors)	Multiplex network master switch (door control switch) or driver side door key cylinder locked	11 to 14 V
2D-1 (ACT-) - Body ground	SB - Body ground	Door lock motor unlock drive output(except driver side)	Multiplex network master switch (door control switch) or driver side door key cylinder off	Below 1 V
2D-1 (ACT-) - Body ground	SB - Body ground	Door lock motor unlock drive output(except driver side)	Multiplex network master switch (door control switch) or driver side door key cylinder unlocked	11 to 14 V
2H-36 (FRCY) - Body ground	GR - Body ground	Front passenger side door courtesy switch input	Front passenger side door open	Below 1 V
2H-36 (FRCY) - Body ground	GR - Body ground	Front passenger side door courtesy switch input	Front passenger side door closed	11 to 14 V
2H-34 (FLCY) - Body ground	P - Body ground	Driver door courtesy switch input	Driver door open	Below 1 V
2H-34 (FLCY) - Body ground	P - Body ground	Driver side door courtesy switch input	Driver door closed	11 to 14 V
2H-33 (LSWL) - Body ground	LG - Body ground	Rear door LH lock position switch input	Rear door LH unlocked	Below 1 V
2H-33 (LSWL) - Body ground	LG - Body ground	Rear door LH lock position switch input	Engine switch off, all doors closed and rear door LH locked	Pulse generation
D12-3 (LCTY) - Body ground	GR - Body ground	Rear door LH courtesy light switch input	Rear door LH open	Below 1 V
D12-3 (LCTY) - Body ground	GR - Body ground	Rear door LH courtesy light switch input	Rear door LH closed	11 to 14 V
D13-6 (RCTY) - Body ground	L - Body ground	Rear door RH courtesy light switch input	Rear door RH open	Below 1 V
D13-6 (RCTY) - Body ground	L - Body ground	Rear door RH courtesy light switch input	Rear door RH closed	11 to 14 V
D13-7 (LSFL) - Body ground	V - Body ground	Driver door lock position switch input	Driver door unlocked	Below 1 V
D13-7 (LSFL) - Body ground	V - Body ground	Driver door lock position switch input	Engine switch off, all doors closed and driver door locked	Pulse generation
D13-9 (L1) - Body ground	B - Body ground	Front passenger side door control switch input	Front passenger side door control switch locked	Below 1 V
D13-9 (L1) - Body ground	B - Body ground	Front passenger side door control switch input	Front passenger side door control switch off	Pulse generation
D13-10 (UL1) - Body ground	G - Body ground	Front passenger side door control switch input	Front passenger side door control switch unlocked	Below 1 V
D13-10 (UL1) - Body ground	G - Body ground	Front passenger side door control switch input	Front passenger side door control switch off	Pulse generation
D13-11 (L2) - Body ground	LG - Body ground	Driver side door key-linked lock input	Driver side door key cylinder turned to locked	Below 1 V
D13-11 (L2) - Body ground	LG - Body ground	Driver side door key-linked lock input	Driver side door key cylinder off	11 to 14 V
D13-18 (LSFR) - Body ground	Y - Body ground	Front passenger side door lock position switch input	Front passenger side door unlocked	Below 1 V
D13-18 (LSFR) - Body ground	Y - Body ground	Front passenger side door lock position switch input	Engine switch off, all doors closed and front passenger side door locked	Pulse generation
D13-19 (BCTY) - Body ground	GR - Body ground	Back door courtesy light switch input	Back door open	Below 1 V
D13-19 (BCTY) - Body ground	GR - Body ground	Back door courtesy light switch input	Back door closed	11 to 14 V
D13-24 (UL3) - Body ground	L - Body ground	Driver side door key-linked unlock input	Driver side door key cylinder turned to unlocked	Below 1 V
D13-24 (UL3) - Body ground	L - Body ground	Driver side door key-linked unlock input	Driver side door key cylinder off	11 to 14 V
D14-2 (LSWR) - Body ground	L - Body ground	Rear door RH lock position switch input	Rear door RH unlocked	Below 1 V
D14-2 (LSWR) - Body ground	L - Body ground	Rear door RH lock position switch input	Engine switch off, all doors closed and rear door RH locked	11 to 14 V

If the result is not as specified, the main body ECU or instrument panel junction block assembly may have a malfunction.

3. CHECK SLIDE DOOR MOTOR UNIT LH (POWER SLIDE DOOR ECU LH)

(a) Disconnect the J9 connector from the power slide door ECU LH.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
J9-12 (ECUB) - J9-1 (GND)	SB - W-B	Power supply	Always	11 to 14 V
J9-7 (B) - J9-1 (GND)	LG - W-B	Power supply	Always	11 to 14 V
J9-4 (IG) - J9-1 (GND)	B - W-B	Power supply	Engine switch on (IG)	11 to 14 V
J9-1 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
J9-9 (OSW) - J9-2 (OSWG)	G - V	Power slide door switch LH input	Slide door outside handle LH pulled	Below 1 Ω
J9-9 (OSW) - J9-2 (OSWG)	G - V	Power slide door switch LH input	Slide door outside handle LH not operated	10 kΩ or higher
J9-11 (MPX1) - Body ground	R - Body ground	CAN	Always	10 kΩ or higher
J9-5 (MPX2) - Body ground	W - Body ground	CAN	Always	10 kΩ or higher

4. CHECK SLIDE DOOR MOTOR UNIT RH (POWER SLIDE DOOR ECU RH)

(a) Disconnect the I8 connector from the power slide door ECU RH.

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
I8-7 (ECUB) - I8-6 (GND)	SB - W-B	Power supply	Always	11 to 14 V
I8-12 (B) - I8-6 (GND)	LG - W-B	Power supply	Always	11 to 14 V
I8-3 (IG) - I8-6 (GND)	B - W-B	Power supply	Engine switch on (IG)	11 to 14 V
I8-6 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
I8-10 (OSW) - I8-5 (OSWG)	G - V	Power slide door switch RH input	Slide door outside handle RH pulled	Below 1 Ω
I8-10 (OSW) - I8-5 (OSWG)	G - V	Power slide door switch RH input	Slide door outside handle RH not operated	10 kΩ or higher
I8-8 (MPX1) - Body ground	R - Body ground	CAN	Always	10 kΩ or higher
I8-2 (MPX2) - Body ground	W - Body ground	CAN	Always	10 kΩ or higher