ENTRY AND START SYSTEM(for Start Function)

Disconnect the 195 and L197 certification ECU (smart key ECU assembly) connectors.

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

Tech Tips

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

Terminal No. (Symbol)	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item
195-9 (IG2D) - Body ground	Output	V - Body ground	IG2 signal	20°C (68°F)	Approximately 310.14 Ω	IG2 Relay Monitor(Outsid e)
195-18 (STP1) - Body ground	Input	G - Body ground	Stop light switch signal	Brake pedal depressed → Brake pedal released	9 V or higher → 1 V or less	Stop Light Switch1
195-2 (+B) - Body ground	Input	B - Body ground	Power source	Power switch off	11 to 14 V	-
195-11 (E) - Body ground	-	W-B - Body ground	Ground	Always	Below 1 Ω	-
L197-30 (SSW2) - Body ground	Input	B - Body ground	SSW2 contact signal Tech Tips Backup for SSW1. Behaves the same way as SSW1.	Power switch pushed → Power switch not pushed	Below 1 Ω → 10 kΩ or higher	Start Switch2
L197-28 (SSW1) - Body ground	Input	W - Body ground	SSW1 contact signal	Power switch pushed → Power switch not pushed	Below 1 Ω → 10 kΩ or higher	Start Switch1
L197-6 (IG1D) - Body ground	Output	B - Body ground	IG1 signal	20°C (68°F)	54.32 to 79.32 Ω	IG1 Relay Monitor(Outsid e)
L197-4 (ACCD) - Body ground	Output	G - Body ground	ACC signal	20°C (68°F)	163 to 238 Ω	ACC Relay Monitor
L197-27 (SPD) - 195-11 (E)	Input	V - W-B	Vehicle speed signal	Always	30 kΩ or higher	Vehicle Speed Signal
L197-25 (PPOS) - Body ground	Input	LG - Body ground	P position signal	Always	30 kΩ or higher	-

Reconnect the 195 and L197 certification ECU (smart key ECU assembly) connectors.

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

Terminal No. (Symbol)	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item
195-9 (IG2D) - 195-11 (E)	Output	V - W-B	IG2 signal	Power switch on (ACC) → Power switch on (IG)	1 V or less → 9 V or higher	-
L197-30 (SSW2) - 195-11 (E)	Input	B - W-B	SSW2 contact signal Tech Tips Backup for SSW1. Behaves the same way as SSW1.	Power switch not pushed → Power switch pushed	9 V or higher → 1 V or less	Start Switch2
L197-28 (SSW1) - 195-11 (E)	Input	W - W-B	SSW1 contact signal	Power switch not pushed → Power switch pushed	9 V or higher → 1 V or less	Start Switch1
L197-4 (ACCD) - 195-11 (E)	Output	G - W-B	ACC signal	Power switch off → Power switch on (ACC)	1 V or less → 8.5 V or highern	ACC Relay Monitor
L197-6 (IG1D) - 195-11 (E)	Output	B - W-B	IG1 signal)	Power switch on (ACC) → Power switch on (IG)	1 V or less → 9 V or higher	IG1 Relay Monitor(Outsid e)
195-7 (ST2) - Body ground	Output	G - Body ground	Starting control signal	P position signal With the brake pedal depresse d, the power switch is pressed and held → After approx. 3 sec. has elapsed, the power switch is released	9 V or higher → 1 V or less	-
L197-27 (SPD) - 195-11 (E)	Input	V - W-B	Vehicle speed signal	Vehicle being driven at approx. 5 km/h (3 mph)	Pulse generation (See waveform 2)	Vehicle Speed Signal
L197-25 (PPOS) - 195-11 (E)	Input	LG - W-B	P position signal	P position signal Power switch on (ACC) → Power switch on (IG)	Pulse generation (See waveform 1)	-

Using an oscilloscope, check the waveform of the ECU.

Waveform 1

Waveform 2

Item	Content
Tester Connection	L197-27 (SPD) - 195-11 (E)
Tool Setting	5 V/DIV., 100 ms./DIV.
Condition	Power switch on (READY), vehicle being driven at approx. 5 km/h (3 mph)

Tech Tips

The wavelength becomes shorter as the vehicle speed increases.

ENTRY AND START SYSTEM(for Start Function) TERMINALS OF ECU