Terminals Of Ecu

WARNING: This page is about a different car, the 2012 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Disconnect the E36 certification ECU (smart key ECU assembly) connector.

Fig 1: E36 Certification ECU (Smart Key ECU Assembly) Connector Terminal Identification
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
E36-1 (+B) - Body ground	GR - Body ground	+B power supply	Always	11 to 14 V
E36-18 (IG) - Body ground	B - Body ground	Ignition power supply	Engine switch off	Below 1 V
E36-18 (IG) - Body ground	B - Body ground	Ignition power supply	Engine switch on (IG)	11 to 14 V
E36-17 (E) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
E36-19 (ACC) - Body ground	GR - Body ground	ACC power supply	Engine switch off	Below 1 V
E36-19 (ACC) - Body ground	GR - Body ground	ACC power supply	Engine switch on (ACC)	11 to 14 V
E36-3 (TSW1) - Body ground	V - Body ground	Entry lock switch (driver side) signal	Front lock switch not pushed	10 kΩ or higher
E36-3 (TSW1) - Body ground	V - Body ground	Entry lock switch (driver side) signal	Front lock switch pushed	Below 1 Ω
E36-4 (TSW2) - Body ground	W - Body ground	Entry lock switch (passenger side) signal	Front lock switch not pushed	10 kΩ or higher
E36-4 (TSW2) - Body ground	W - Body ground	Entry lock switch (passenger side) signal	Front lock switch pushed	Below 1 Ω
E36-10 (LIN) - Body ground	V - Body ground	LIN line	Always	10 kΩ or higher
E36-27 (CANH) - Body ground	SB - Body ground	CAN line	Always	10 kΩ or higher
E36-28 (CANL) - Body ground	W - Body ground	CAN line	Always	10 kΩ or higher
E36-40 (AGND) - Body ground	GR - Body ground	Ground	Always	Below 1 Ω
E36-7 (TSW5) - Body ground	GR - Body ground	Luggage compartment door opener outer switch signal	Opener switch OFF	10 kΩ or higher
E36-7 (TSW5) - Body ground	GR - Body ground	Luggage compartment door opener outer switch signal	Opener switch ON	Below 1 Ω

If the result is not as specified, the wire harness side may have a malfunction.

Reconnect the E36 certification ECU (smart key ECU assembly) connector.

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

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
E36-33 (CLG1) - E36-17 (E)	BR - W-B	Door electrical key oscillator (driver side) sensor signal	All doors closed, all doors locked and engine switch off	Alternating between 5 V and below 1 V
E36-33 (CLG1) - E36-17 (E)	BR - W-B	Door electrical key oscillator (driver side) sensor signal	Door unlocked or door open	Below 1 V
E36-22 (SEN1) - E36-17 (E)	LG - W-B	Touch sensor (driver side) detection signal	Outside door handle touched	Below 1 V
E36-22 (SEN1) - E36-17 (E)	LG - W-B	Touch sensor (driver side) detection signal	Outside door handle not touched (Have the key outside the cabin)	11 to 14 V
E36-5 (SEL1) - E36-17 (E)	Y - W-B	Touch sensor (driver side) activation control signal	The key is more than 5 m (16.4 ft.) away from the driver door.	11 to 14 V
E36-5 (SEL1) - E36-17 (E)	Y - W-B	Touch sensor (driver side) activation control signal	The key brought to the outside handle	Below 1 V
E36-35 (CLG2) - E36-17 (E)	R - W-B	Door electrical key oscillator (passenger side) sensor signal	All doors closed, all doors locked and engine switch off	Alternating between 5 V and below 1 V
E36-35 (CLG2) - E36-17 (E)	R - W-B	Door electrical key oscillator (passenger side) sensor signal	Door unlocked or door open	Below 1 V
E36-23 (SEN2) - E36-17 (E)	BR - W-B	Touch sensor (passenger side) detection signal	Outside door handle touched	Below 1 V
E36-23 (SEN2) - E36-17 (E)	BR - W-B	Touch sensor (passenger side) detection signal	Outside door handle not touched (Have the key outside the cabin)	11 to 14 V
E36-6 (SEL2) - E36-17 (E)	B - W-B	Touch sensor (passenger side) activation control signal	The key is more than 5 m (16.4 ft.) away from the passenger door.	11 to 14 V
E36-6 (SEL2) - E36-17 (E)	B - W-B	Touch sensor (passenger side) activation control signal	The key brought to the outside handle	Below 1 V
E36-11 (CLG5) - E36-12 (CG5B)	L - LG	Indoor electrical key oscillator (front) sensor signal	Within 30 seconds after driver side door opened and closed, engine switch off	Alternating between 5 V and below -5 V
E36-11 (CLG5) - E36-12 (CG5B)	L - LG	Indoor electrical key oscillator (front) sensor signal	Engine switch on (IG)	Below 1 V
E36-13 (CLG6) - E36-14 (CG6B)	W - BR	Indoor electrical key oscillator (rear) sensor signal	Within 30 seconds after driver side door opened and closed, engine switch off	Alternating between 5 V and below -5 V
E36-13 (CLG6) - E36-14 (CG6B)	W - BR	Indoor electrical key oscillator (rear) sensor signal	Engine switch on (IG)	Below 1 V
E36-15 (CLG7) - E36-16 (CG7B)	GR - W	Indoor electrical key oscillator (luggage compartment) sensor signal	Luggage compartment door opener switch ON	Alternating between 5 V and below -5 V
E36-15 (CLG7) - E36-16 (CG7B)	GR - W	Indoor electrical key oscillator (luggage compartment) sensor signal	Luggage compartment door opener switch OFF	Below 1 V
E36-31 (CLG8) - E36-32 (CG8B)	SB- Y	Outside electrical key oscillator (luggage compartment) sensor signal	Luggage compartment door opener switch ON	Alternating between 5 V and below -5 V
E36-31 (CLG8) - E36-32 (CG8B)	SB- Y	Outside electrical key oscillator (luggage compartment) sensor signal	Luggage compartment door opener switch OFF	Below 1 V
E36-29 (RC0) - E36-17 (E)	LG - W-B	Entry door control receiver power source	Engine switch off, all doors closed and key switch on	4.5 to 5.5 V
E36-29 (RC0) - E36-17 (E)	LG - W-B	Entry door control receiver power source	Engine switch off, all doors closed and key switch off	Below 1 V
E36-39 (RSSI) - E36-17 (E)	L - W-B	Entry door control receiver electric wave existence signal	Engine switch off, all doors closed, and the key is not in the detection area.	11 to 14 V
E36-39 (RSSI) - E36-17 (E)	L - W-B	Entry door control receiver electric wave existence signal	Engine switch off, all doors closed, and the key is in the detection area.	Below 1 V
E36-38 (RDA) - E36-17 (E)	P - W-B	Entry door control receiver data input signal	Engine switch off, all doors closed and key switch off	11 to 14 V (Pulse generation)
E36-38 (RDA) - E36-17 (E)	P - W-B	Entry door control receiver data input signal	Engine switch off, all doors closed and key switch on	Pulse generation
E36-38 (RDA) - Body ground	P - Body ground	Tuner input signal	Engine switch off, all doors closed, and the key is not in the detection area.	11 to 14 V (Pulse generation)
E36-38 (RDA) - Body ground	P - Body ground	Tuner input signal	The key is in the detection area.	Pulse generation
E36-30 (VC5) - Body ground	BE - Body ground	Transponder key amplifier power supply	Key is not in the cabin.	Below 1 V
E36-30 (VC5) - Body ground	BE - Body ground	Transponder key amplifier power supply	The key is outside the cabin and the driver's door is open.	4.5 to 5.5 V
E36-8 (TXCT) - Body ground	SB - Body ground	Transponder key amplifier output signal	Key is not in the cabin.	Below 1 V
E36-8 (TXCT) - Body ground	SB - Body ground	Transponder key amplifier output signal	The key is outside the cabin and the driver's door is open.	Pulse generation (see waveform 1)
E36-9 (CODE) - Body ground	G - Body ground	Transponder key amplifier communication signal	Key is not in the cabin.	Below 1 V
E36-9 (CODE) - Body ground	G - Body ground	Transponder key amplifier communication signal	The key is outside the cabin and the driver's door is open. The key is close to the engine switch with the brake pedal depressed.	Pulse generation (see waveform 2)
E36-21 (BZR) - Body ground	R - Body ground	Wireless door lock buzzer signal	Wireless door lock buzzer OFF	Below 1 V
E36-21 (BZR) - Body ground	R - Body ground	Wireless door lock buzzer signal	Wireless door lock buzzer ON	Pulse generation

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

Inspect using an oscilloscope.

Fig 2: Identifying Waveform 1

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

WAVEFORM 1 (REFERENCE)

Tester Connection	E36-8 (TXCT) - Body ground
Tool Setting	2 V/DIV., 50 ms./DIV.
Condition	The key is outside the cabin and the driver's door is open.

Inspect using an oscilloscope.

Fig 3: Identifying Waveform 2

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

WAVEFORM 2 (REFERENCE)

Tester Connection	E36-9 (CODE) - Body ground
Tool Setting	2 V/DIV., 50 ms./DIV.
Condition	The key is outside the cabin and the driver's door is open. The key is close to the engine switch with the brake pedal depressed.

MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

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

Fig 4: Main Body ECU (Instrument Panel Junction Block) Connector Terminal Identification

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
2E-17 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
E51-4 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
E51-12 (CANN) - Body ground	W - Body ground	CAN Line	Always	10 kΩ or higher
E51-11 (CANP) - Body ground	R - Body ground	CAN Line	Always	10 kΩ or higher
E50-14 (STP) - Body ground	L - Body ground	Stop light switch signal	Brake pedal depressed	11 to 14 V
E50-14 (STP) - Body ground	L - Body ground	Stop light switch signal	Brake pedal released	Below 1 V

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