Terminals Of Ecu [12/2012 - 10/2015]

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Fig 1: Certification ECU (Smart Key ECU Assembly) Connector End View

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the G84 and G82 connectors.

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	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item
G82-7 (STA) - Body ground	Input	LG - Body ground	When starting the engine, this monitors the voltage sent from terminal STAR to the starter relay to judge whether the engine is "being started".	20°C (68°F)	100 to 150 Ω 1 132 to 198 Ω 2	-
G82-5 (STAR) - Body ground	Input/Output	W - Body ground	Outputs voltage to the starter relay: Outputs voltage (12 V) to the starter relay when starting the engine. (Max. 30 sec. Turns off when an engine speed of 500 rpm or more continues for 500 ms or more.) HINT: When Hi is selected, a start request signal (STAR) will not be output even though a start request signal (STSW) is input.	Shift lever in any position other than P or N → shift lever in P or N (at 20°C (68°F)).	10 kΩ or higher →100 to 150 Ω 1 10 kΩ or higher →132 to 198 Ω 2	-
G82-5 (STAR) - Body ground	Input/Output	W - Body ground	Receives neutral start switch (P, N position detection) signal: Monitors whether the neutral start switch is on (P or N) or off (other than P or N). Applies voltage via a resistor (large) in the certification ECU (smart key ECU assembly). When the neutral start switch is on, due to the starter relay coil resistance (small) using some of the voltage, the voltage at terminal STAR will be low (2.7 V or less), and when the neutral start switch is off, the voltage will be high (9 V or more).	Perform the following operations except while the engine is cranking: Shift lever in any position other than P or N → shift lever in P or N(at 20°C (68°F))	30 kΩ or higher →100 to 150 Ω 1 30 kΩ or higher →132 to 198 Ω 2	Neutral SW/ Clutch SW
G82-16 (NE) - Body ground	Input	P - Body ground	Engine speed signal	Always	10 kΩ or higher	Engine Condition
G82-9 (IG2D) - Body ground	Output	GR - Body ground	IG2 signal	20°C (68°F)	130 to 231 Ω	IG2 Relay Monitor (Outside)
G82-18 (STP1) - Body ground	Input	L - Body ground	Stop light switch signal	Brake pedal released → Brake pedal depressed	9 V or higher → 1 V or less	Stop Light Switch1
G82-2 (+B) - G82-11 (E)	Input	W - BR	Power source	Always	11 to 14 V	-
G84-26 (SLP) - G82-11 (E)	Input	W - BR	Steering lock position signal	Always	10 kΩ or higher	Steering Unlock Switch
G84-25 (P) - G82-11 (E)	Input	R - BR	P position signal	Shift lever in P → Shift lever not in P	40 kΩ or higher → 200 Ω or less	Shift P Signal
G82-11 (E) - Body ground	-	BR - Body ground	GND	Always	Below 1 Ω	-
G84-30 (SSW2) - Body ground	Input	G - Body ground	SSW2 contact signal HINT: Backup for SSW1. Behaves the same way as SSW1.	Engine switch pushed → Engine switch not pushed	Below 1 Ω → 10 kΩ or higher	Start Switch2
G84-28 (SSW1) - Body ground	Input	LG - Body ground	SSW1 contact signal	Engine switch pushed → Engine switch not pushed	Below 1 Ω → 10 kΩ or higher	Start Switch1
G84-4 (ACCD) - Body ground	Output	R - Body ground	ACC signal	20°C (68°F)	182 to 273 Ω	ACC Relay Monitor
G84-6 (IG1D) - Body ground	Output	P - Body ground	IG1 signal	20°C (68°F)	61 to 91 Ω	IG1 Relay Monitor (Outside)
G82-10 (CUTB) - G82-11 (E)	Input	P - BR	Dark current cut pin*3	Always	11 to 14 V	-
G84-27 (SPD) - Body ground	Input	G - Body ground	Vehicle speed signal	Always	30 kΩ or higher	Vehicle Speed Signal

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*1: except TMMC Made*2: for TMMC Made*3: In order to prevent the vehicle battery from being depleted when the vehicle is shipped long distances, a fuse that cuts unnecessary electrical load while the vehicle is being shipped is set in the circuit. If the fuse is removed, the circuit becomes open. If the fuse that is between the vehicle battery and terminal CUTB is removed and the circuit is open, the certification ECU (smart key ECU assembly) changes to a certain control mode (example: the transmission of electric waves every 0.25 seconds that form the detection area stops).

Reconnect the G82 and G84 connectors.

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

Tester Connection	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item
G82-7 (STA) - G82-11 (E)	Input	LG - BR	When starting the engine, this monitors the voltage sent from terminal STAR to the starter relay to judge whether the engine is "being started".	With the brake pedal depressed, the engine switch is pressed and held (starter on) → After approx. 1 sec. has elapsed, the engine switch is released (starter off)	6 V or higher*1 → 1.5 V or less	-
G82-5 (STAR) - G82-11 (E)	Input/Output	W - BR	Outputs voltage to the starter relay: Outputs voltage (12 V) to the starter relay when starting the engine. (Max. 30 sec. Turns off when an engine speed of 500 rpm or more continues for 500 ms or more.) HINT: When Hi is selected, a start request signal (STAR) will not be output even though a start request signal (STSW) is input.	With the brake pedal depressed, the engine switch is pressed and held → After approx. 1 sec. has elapsed, the engine switch is released	6 V or higher*1 → 1.5 V or less	-
G82-5 (STAR) - G82-11 (E)	Input/Output	W - BR	Receives neutral start switch (P, N position detection) signal: Monitors whether the neutral start switch is on (P or N) or off (other than P or N). Applies voltage via a resistor (large) in the certification ECU (smart key ECU assembly). When the neutral start switch is on, due to the starter relay coil resistance (small) using some of the voltage, the voltage at terminal STAR will be low (2.7 V or less), and when the neutral start switch is off, the voltage will be high (9 V or more).	Perform the following operations except while the engine is cranking: Shift lever in any position other than P or N → shift lever in P or N	9 V or higher → 2.7 V or less	Neutral SW/ Clutch SW
G82-16 (NE) - G82-11 (E)	Input	P - BR	Engine speed signal	Idling (engine warmed up)	Pulse generation (See waveform 1)	Engine Condition
G82-9 (IG2D) - G82-11 (E)	Output	GR - BR	IG2 signal	Engine switch on (ACC) → Engine switch on (IG)	1 V or less → 9 V or higher	IG2 Relay Monitor (Outside)
G82-18 (STP1) - G82-11 (E)	Input	L - BR	Stop light switch signal	Brake pedal released → Brake pedal depressed	1 V or less → 9 V or higher	Stop Light Switch1
G84-26 (SLP) - G82-11 (E)	Input	W - BR	Steering lock position signal	Steering wheel locked → Steering wheel unlocked*2	11 to 14 V → 1.2 V or less	Steering Unlock Switch
G84-29 (SLR+) - G82-11 (E)	Output	L - BR	Steering lock motor operation command signal (Steering lock motor operation permission signal sent from the certification ECU (smart key ECU assembly))	Steering lock motor stopped → Steering lock motor operating → Steering lock motor stopped*3	Pulse generation (See waveform 2)	-
G84-25 (P) - G82-11 (E)	Input	R - BR	P position signal	Shift lever in P → Shift lever not in P	9 V or higher → 2.7 V or less	Shift P Signal
G84-30 (SSW2) - G82-11 (E)	Input	G - BR	SSW2 contact signal HINT: Backup for SSW1. Behaves the same way as SSW1.	Engine switch not pushed → Engine switch pushed	9 V or higher → 1 V or less	Start Switch2
G84-28 (SSW1) - G82-11 (E)	Input	LG - BR	SSW1 contact signal	Engine switch not pushed → Engine switch pushed	9 V or higher → 1 V or less	Start Switch1
G84-4 (ACCD) - G82-11 (E)	Output	R - BR	ACC signal	Engine switch off → Engine switch on (ACC)	1 V or less → 8.5 V or higher	ACC Relay Monitor
G84-6 (IG1D) - G82-11 (E)	Output	P - BR	IG1 signal	Engine switch on (ACC) → Engine switch on (IG)	1 V or less → 9 V or higher	IG1 Relay Monitor (Outside)
G84-27 (SPD) - G82-11 (E)	Input	G - BR	Vehicle speed signal	Vehicle being driven at approx. 5 km/h (3 mph)	Pulse generation (See waveform 3)	Vehicle Speed Signal

HINT:

*1: While the engine is cranking, the battery voltage may drop to approximately 6 V.
*2: When the engine switch is turned off with the shift lever in P and any of the doors are opened or closed, the steering wheel will be locked. When the engine switch is turned on (ACC) or on (IG), the steering wheel will be unlocked.
*3: When all of the following conditions are met, open any of the doors to operate the steering lock motor.
- The shift lever is in P.
- While carrying the electrical key transmitter sub-assembly, the engine switch is turned on (IG) and the steering is unlocked.
- The engine switch is off.

Using an oscilloscope, check the waveform of the ECU.

HINT:

The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

Waveform 1

Item	Content
Tester Connection	G82-16 (NE) - G82-11 (E)
Tool Setting	2 V/DIV., 2 ms./DIV.
Vehicle Condition	Idling (engine warmed up)

HINT:

The wavelength becomes shorter as the engine speed increases.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Waveform 2

*a	Steering lock motor not operating
*b	Steering lock motor operating

Item	Content
Tester Connection	G84-29 (SLR+) - G82-11 (E)
Tool Setting	2 V/DIV., 200 ms./DIV.
Vehicle Condition	Steering lock motor stopped → Steering lock motor operating → Steering lock motor stopped*

HINT:

*: When all of the following conditions are met, open any of the doors to operate the steering lock motor.

The engine switch is off.
The shift lever is in P.
While carrying the electrical key transmitter sub-assembly, the engine switch is turned on (IG) and the steering is unlocked.

Waveform 3

Item	Content
Tester Connection	G84-27 (SPD) - G82-11 (E)
Tool Setting	5 V/DIV., 20 ms./DIV.
Vehicle Condition	Engine switch on (IG), vehicle being driven at approx. 5 km/h (3 mph)

HINT:

The wavelength becomes shorter as the vehicle speed increases.

CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)
Refer to TERMINALS OF ECU [12/2012 - 10/2015]