THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): TERMINALS OF ECU; 2022 MY Corolla Corolla Hatchback GR Corolla [06/2021

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000001X83X
Model Year Start: 2022	Model: GR Corolla	Prod Date Range: [06/2021 - 09/2022]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): TERMINALS OF ECU; 2022 MY Corolla Corolla Hatchback GR Corolla [06/2021 - 09/2022]

TERMINALS OF ECU

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Disconnect the O61, O62 and I1 certification ECU (smart key ECU 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	Input / Output	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
O62-21 (NE) - Body ground	L - Body ground	Input	Engine speed signal	Always	10 kΩ or higher	Engine Condition
O61-24 (STP1) - Body ground*1	BR - Body ground	Input	Stop light switch signal	Brake pedal depressed → Brake pedal released	9 V or higher → 1 V or less	Stop Light Switch1
I1-3 (+B) - I1-18 (E)	GR - W-B	Input	Power source	Always	11 to 14 V	-
I1-22 (P) - I1-18 (E)*1	P - W-B	Input	P position signal	Shift lever in P → Shift lever not in P	30 kΩ or higher → Below 200 Ω	Shift P Signal
I1-17 (CUTB) - Body ground	SB - W-B3 BR - W-B4	Input	Dark current cut pin*2	Always	11 to 14 V	-
I1-18 (E) - Body ground	W-B - Body ground	-	GND	Always	Below 1 Ω	-
I1-13 (SSW3) - Body ground	P - Body ground	Input	SSW3 contact signal	Engine switch pushed → Engine switch not pushed	Below 15 Ω → 10 kΩ or higher	Start Switch3
I1-20 (SSW2) - Body ground	L - Body ground	Input	SSW2 contact signal	Engine switch pushed → Engine switch not pushed	Below 15 Ω → 10 kΩ or higher	Start Switch2
I1-23 (SSW1) - Body ground	V - Body ground	Input	SSW1 contact signal	Engine switch pushed → Engine switch not pushed	Below 15 Ω → 10 kΩ or higher	Start Switch1
I1-7 (SPD) - Body ground	BR - Body ground	Input	Vehicle speed signal	Always	30 kΩ or higher	Vehicle Speed Signal

*1: except Manual Transaxle
*2: 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 installed 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 radio waves every 0.25 seconds, which form the detection area, stops).
*3: for Sedan
*4: except Sedan

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

Tester Connection	Wiring Color	Input / Output	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
O62-1 (STA) - I1-18 (E)	LG - W-B	Input	When starting the engine, this monitors the voltage sent from terminal STAR to the starter relay to judge whether the engine is "being started".	for Manual Transaxle Engine switch pressed and held with clutch pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off) except Manual Transaxle Engine switch pressed and held with brake pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off)	6 V or higher*3 → 1.0 V or less	-
O62-2 (STAR) - I1-18 (E)	W - W-B	Input / Output	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 1000 rpm.) HINT: When Hi is selected, a start request signal (STAR) will not be output even though a start request signal (STSW) is input.	for Manual Transaxle Engine switch pressed and held with clutch pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off) except Manual Transaxle Engine switch pressed and held with brake pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off)	6 V or higher*3 → 1.0 V or less	-
O62-2 (STAR) - I1-18 (E)	W - W-B	Input / Output	for Manual Transaxle Receives clutch start switch signal Monitors whether the clutch start switch is on (clutch pedal depressed) or off(clutch pedal released). Applies voltage via a resistor (large) in the certification ECU (smart key ECU assembly). When the clutch 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 clutch start switch is off, the voltage will be high (9 V or more). except Manual Transaxle 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).	for Manual Transaxle Perform the following operations except while the engine is cranking: Clutch pedal released → Clutch pedal depressed except Manual Transaxle 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))	9 V or higher → 2.7 V or less	Neutral SW/ Clutch SW
O62-21 (NE) - I1-18 (E)	L - W-B	Input	Engine speed signal	Idling (engine warmed up)	Pulse generation (See waveform 1)	Engine Condition
O61-24 (STP1) - I1-18 (E)*1	BR - W-B	Input	Stop light switch signal	Brake pedal released → Brake pedal depressed	1 V or less → 9 V or higher	Stop Light Switch1
I1-12 (SLP) - I1-18 (E)	G - W-B	Input	Steering lock position signal	Steering locked → Steering unlocked	11 to 14 V → 1.5 V or less	Steering Unlock Switch
I1-25 (SLR+) - I1-18 (E)	P - W-B	Output	Steering lock motor operation command signal (Steering lock motor operation permission signal sent from the certification ECU (smart key ECU assembly))	for Manual Transaxle When a door is opened, the steering lock motor will be operated if all of the following conditions are met: The steering is unlocked. The engine switch is off. except Manual Transaxle When a door is opened, the steering lock motor will be operated if all of the following conditions are met: The steering is unlocked. The engine switch is off. The shift lever is in P.	11 to 14 V → Below 1 V	-
I1-14 (LIN) - I1-18 (E)	V - W-B	Input / Output	LIN communication line	Engine switch on (IG)	Pulse generation	Steering Lock Start Cond
I1-22 (P) - I1-18 (E)*1	P - W-B	Input	P position signal	Shift lever in P → Shift lever not in P	9 V or higher → 2.76 V or less	Shift P Signal
I1-13 (SSW3) - I1-18 (E)	P - W-B	Input	SSW3 contact signal	Engine switch not pushed → Engine switch pushed	9 V or higher → 1 V or less	Start Switch3
I1-20 (SSW2) - I1-18 (E)	L - W-B	Input	SSW2 contact signal	Engine switch not pushed → Engine switch pushed	9 V or higher → 1 V or less	Start Switch2
I1-23 (SSW1) - I1-18 (E)	V - W-B	Input	SSW1 contact signal	Engine switch not pushed → Engine switch pushed	9 V or higher → 1 V or less	Start Switch1
I1-16 (ACCD) - I1-18 (E)	L - W-B	Output	ACC signal	Engine switch off → Engine switch on (ACC)	1 V or less → 8.5 V or higher	ACC Relay Monitor
I1-15 (IG1D) - I1-18 (E)	R - W-B	Output	IG signal	Engine switch on (ACC) → Engine switch on (IG)	1 V or less → 9 V or higher	IG Relay Monitor (Outside)
I1-7 (SPD) - I1-18 (E)	BR - W-B	Input	Vehicle speed signal	Vehicle being driven at approx. 5 km/h (3 mph)	Pulse generation (See waveform 2)	Vehicle Speed Signal
I1-8 (CLG5) - I1-18 (E)	G - W-B	Output	Output to No. 1 indoor electrical key antenna assembly (front floor)	Procedure: Engine switch off Electrical key transmitter sub-assembly not inside vehicle Within 30 seconds of closing any door	Pulse generation (See waveform 3)	-
I1-9 (CG5B) - I1-18 (E)	R - W-B	Output	Output to No. 1 indoor electrical key antenna assembly (front floor) (terminal on opposite side of component from CLG5 output terminal)	Procedure: Engine switch off Electrical key transmitter sub-assembly not inside vehicle Within 30 seconds of closing any door	Pulse generation (See waveform 3)	-
O61-10 (CLG7) - I1-18 (E)*2	G - W-B	Output	Output to No. 3 indoor electrical key antenna assembly (inside luggage compartment)	Procedure: for Hatchback Engine switch off Electrical key transmitter sub-assembly not inside vehicle Within 30 seconds of closing any door	Pulse generation (See waveform 3)	-
O61-10 (CLG7) - I1-18 (E)*2	G - W-B	Output		Procedure: for Sedan Door is closed Engine switch off Electrical key transmitter sub-assembly not inside vehicle Driver door lock sensor touched	Pulse generation (See waveform 4)	-
O61-9 (CG7B) - I1-18 (E)*2	W - W-B	Output	Output to No. 3 indoor electrical key antenna assembly (inside luggage compartment) (terminal on opposite side of component from CLG7 output terminal)	Procedure: for Hatchback Engine switch off Electrical key transmitter sub-assembly not inside vehicle Within 30 seconds of closing any door	Pulse generation (See waveform 3)	-
O61-9 (CG7B) - I1-18 (E)*2	W - W-B	Output		Procedure: for Sedan Door is closed Engine switch off Electrical key transmitter sub-assembly not inside vehicle Driver door lock sensor touched	Pulse generation (See waveform 4)	-
I1-11 (AGND) - Body ground	W - Body ground	-	Transponder key amplifier ground	Always	Below 1 Ω	BCC Malfunction Abnormal Status Different Encrypt Code Different Serial Number Frame Error Response
I1-5 (ANT1) - I1-11 (AGND)	B - W	Input / Output	Signal output to transponder key amplifier (Code sent from certification ECU (smart key ECU assembly) to transponder key amplifier built into engine switch, and then transmitted by transponder key amplifier antenna as radio waves)	Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed	Pulse generation (See waveform 5)	BCC Malfunction Abnormal Status Different Encrypt Code Different Serial Number Frame Error Response
I1-6 (ANT2) - I1-11 (AGND)	G - W	Input / Output	Signal input from transponder key amplifier (Radio waves from transponder key amplifier built into engine switch used to detect key information. Key information then sent to certification ECU (smart key ECU assembly))	Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed	Pulse generation (See waveform 6)
I1-19 (IND) - I1-18 (E)	R - W-B	Output	Security indicator output	Engine switch off → on (IG)	Pulse generation → Below 2 V	-

*1: except Manual Transaxle
*2: for Hatchback

HINT:

*3: While the engine is cranking, the battery voltage may drop to approximately 6 V.
The waveform of the steering lock actuator motor stopped can be checked without performing any particular operation.
The waveform of the steering lock actuator motor operating can be checked if either of the following operations is performed:
for Manual Transaxle
- To unlock the steering, bring the electrical key transmitter sub-assembly into the cabin and turn the engine switch on (ACC) or on (IG).
- To lock the steering, open a door with the engine switch off.
except Manual Transaxle
- To unlock the steering, bring the electrical key transmitter sub-assembly into the cabin and turn the engine switch on (ACC) or on (IG).
- To lock the steering, open a door with the engine switch off and the shift lever in P.

(e) Using an oscilloscope, check the waveform of the ECU.

NOTICE:

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

(1) Waveform 1

Measurement Condition

Item	Content
Tester Connection	O62-21 (NE) - I1-18 (E)
Tool Setting	2 V/DIV., 2 ms./DIV.
Condition	Idling (engine warmed up)

HINT:

The wavelength becomes shorter as the engine speed increases.

(2) Waveform 2

Measurement Condition

Item	Content
Tester Connection	I1-7 (SPD) - I1-18 (E)
Tool Setting	5 V/DIV., 20 ms./DIV.
Condition	Vehicle being driven at approx. 5 km/h (3 mph)

HINT:

The wavelength becomes shorter as the vehicle speed increases.

(3) Waveform 3

*a	For 30 seconds after any door closed
*b	After 30 seconds or more have elapsed since any door closed

Measurement Condition

Item

Content

Tester Connection

I1-8 (CLG5) - I1-18 (E)

I1-9 (CG5B) - I1-18 (E)

O61-10 (CLG7) - I1-18 (E)*

O61-9 (CG7B) - I1-18 (E)*

Tool Setting

2 V/DIV., 500 ms/DIV.

Condition

Procedure:

Engine switch off
Electrical key transmitter sub-assembly not inside vehicle
Within 30 seconds of closing any door

*: for Hatchback

(4) Waveform 4

NOTICE:

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

*a	Driver door lock sensor not touched
*b	Driver door lock sensor touched

Measurement Condition

Item

Content

Tester Connection

O61-10 (CLG7) - I1-18 (E)

O61-9 (CG7B) - I1-18 (E)

Tool Setting

2 V/DIV., 500 ms/DIV.

Condition

Procedure:

Door is closed
Engine switch off
Electrical key transmitter sub-assembly not inside vehicle
Driver door lock sensor touched

(5) Waveform 5

Measurement Condition

Item	Content
Tester Connection	I1-5 (ANT1) - I1-11 (AGND)
Tool Setting	20 V/DIV., 200 ms./DIV.
Condition	Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

(6) Waveform 6

Measurement Condition

Item	Content
Tester Connection	I1-6 (ANT2) - I1-11 (AGND)
Tool Setting	20 V/DIV., 200 ms./DIV.
Condition	Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)

(a) Disconnect the I59 steering lock ECU (steering lock actuator or upper bracket 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	Input / Output	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
I59-1 (GND) - Body ground	W-B - Body ground	-	Ground	Always	Below 1 Ω	-
I59-6 (IG2) - I59-1 (GND)	B - W-B	Input	IG signal (IG2 power supply input for steering lock motor)	Engine switch off	Below 1 V	-
I59-6 (IG2) - I59-1 (GND)	B - W-B	Input	IG signal (IG2 power supply input for steering lock motor)	Engine switch on (IG)	11 to 14 V	-
I59-7 (B) - Body ground	L - Body ground	Input	Constant power supply	Always	11 to 14 V	-

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

Terminal No. (Symbol)	Wiring Color	Input / Output	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
I59-3 (IGE) - I59-1 (GND)	P - W-B	Input	Steering lock motor operation permission signal (motor operation permission signal supplied by certification ECU (smart key ECU assembly))	for Manual Transaxle Steering lock motor operating when all conditions met, and then door opened: The steering is unlocked. The engine switch is off. except Manual Transaxle Steering lock motor operating when all conditions met, and then door opened: The steering is unlocked. The engine switch is off. The shift lever is in P.	11 to 14 V → Below 1 V	Power Supply Short Unlock Request Receive Lock Request Receive
I59-4 (SLP1) - I59-1 (GND)	SB - W-B	Output	Steering lock bar position signal (signal output from steering unlock sensor)	Steering locked → unlocked	11 to 14 V → Below 1.5 V	Sensor Value
I59-5 (LIN) - I59-1 (GND)	G - W-B	Input / Output	LIN communication line	Engine switch on (IG)	Pulse generation	Steering Lock Start Cond

HINT:

There is 1 motor and 2 sensors built into the steering lock actuator or upper bracket assembly.
When taking measurements when the lock motor is stopped, it is not necessary to perform any operations.
In order to take measurements when the lock motor is operating, perform either of the following operations:
for Manual Transaxle
- To unlock the steering, carry the key and turn the engine switch on (ACC) or on (IG).
- To lock the steering, turn the engine switch off, and then open a door.
except Manual Transaxle
- To unlock the steering, carry the key and turn the engine switch on (ACC) or on (IG).
- To lock the steering, turn the engine switch off with the shift lever in P, and then open a door.

CHECK ID CODE BOX (IMMOBILISER CODE ECU)

(a) Disconnect the I20 ID code box (immobiliser code ECU) 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.

Tester Connection	Wiring Color	Input/Output	Terminal Description	Condition	Specified Condition	Related Data List Item
I20-1 (+B) - Body ground	L - Body ground	Input	Power source	Always	11 to 14 V	-
I20-5 (GND) - Body ground	W-B - Body ground	-	Ground	Always	Below 1 Ω	-

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

Tester Connection	Wiring Color	Input/Output	Terminal Description	Condition	Specified Condition	Related Data List Item
I20-3 (EFII) - I20-5 (GND)	B - W-B	Input	EFI communication input (Signal input from ECM to ID code box (immobiliser code ECU))	Engine switch off	11 to 14 V	Smart Key EFI Code Receive Engine Start Request
I20-3 (EFII) - I20-5 (GND)	B - W-B	Input	EFI communication input (Signal input from ECM to ID code box (immobiliser code ECU))	Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after cable disconnected and reconnected to battery	Pulse generation (See waveform 1)
I20-4 (EFIO) - I20-5 (GND)	R - W-B	Output	EFI communication output (Signal output from ID code box (immobiliser code ECU) to ECM)	Engine switch off	Below 1 V
I20-4 (EFIO) - I20-5 (GND)	R - W-B	Output	EFI communication output (Signal output from ID code box (immobiliser code ECU) to ECM)	Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after cable disconnected and reconnected to battery	Pulse generation (See waveform 2)
I20-2 (LIN1) - I20-5 (GND)	P - W-B	Input/Output	LIN communication line	Engine switch on (IG)	Pulse generation	Smart Key Steering Lock Start Cond

(e) Using an oscilloscope, check the waveform.

NOTICE:

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

(1) Waveform 1

Approximately 160 ms

Approximately 270 ms

Item	Content
Tester Connection	I20-3 (EFII) - I20-5 (GND)
Tool Setting	2 V/DIV., 500 ms./DIV.
Condition	Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after cable disconnected and reconnected to battery

(2) Waveform 2

Approximately 160 ms

Approximately 270 ms

Item	Content
Tester Connection	I20-4 (EFIO) - I20-5 (GND)
Tool Setting	2 V/DIV., 500 ms./DIV.
Condition	Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after cable disconnected and reconnected to battery

CHECK ECM (for M20A-FKS)

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

Terminal No. (Symbol)	Wiring Color	Input / Output	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
A47-35 (+B2) - A47-10 (E1)	LG - W-B	Input	Ignition power supply	Engine switch on (IG)	11 to 14 V	-
A47-9 (+B) - A47-10 (E1)	BE - W-B	Input	Ignition power supply	Engine switch on (IG)	11 to 14 V	-
A47-15 (MREL) - A47-10 (E1)	G - W-B	Input	Ignition power supply	Engine switch on (IG)	11 to 14 V	-
A47-1 (BATT) - A47-10 (E1)	G - W-B	Input	+B power supply	Always	11 to 14 V	-
A47-10 (E1) - Body ground	W-B - Body ground	-	Ground	Always	Below 1 Ω	-
A47-36 (E2) - Body ground	W-B - Body ground	-	Ground	Always	Below 1 Ω	-
A47-25 (IMO) - A47-10 (E1)	B - W-B	Output	EFI communication input (Signal input from ECM to ID code box (immobiliser code ECU))	Engine switch off	11 to 14 V	-
A47-25 (IMO) - A47-10 (E1)	B - W-B	Output	EFI communication input (Signal input from ECM to ID code box (immobiliser code ECU))	Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after cable disconnected and reconnected to battery	Pulse generation (See waveform 1)	-
A47-26 (IMI) - A47-10 (E1)	W - W-B	Input	EFI communication input (Signal output from ID code box (immobiliser code ECU) to ECM)	Engine switch off	11 to 14 V → 1 V or less	-
A47-26 (IMI) - A47-10 (E1)	W - W-B	Input	EFI communication input (Signal output from ID code box (immobiliser code ECU) to ECM)	Engine switch turned on (IG) using registered electrical key transmitter sub-assembly	Pulse generation (See waveform 2)	-

(b) Using an oscilloscope, check the waveform.

NOTICE:

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

(1) Waveform 1 (Reference)

Approximately 160 ms.

Approximately 270 ms.

Measurement Condition

Item	Content
Tester Connection	A47-25 (IMO) - A47-10 (E1)
Tool Setting	2 V/DIV., 500 ms./DIV.
Condition	Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after cable disconnected and reconnected to battery

(2) Waveform 2 (Reference)

Approximately 160 ms.

Approximately 270 ms.

Measurement Condition

Item	Content
Tester Connection	A47-26 (IMI) - A47-10 (E1)
Tool Setting	2 V/DIV., 500 ms./DIV.
Condition	Engine switch turned on (IG) using registered electrical key transmitter sub-assembly

CHECK ECM (for 2ZR-FAE)

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

Terminal No. (Symbol)	Wiring Color	Input / Output	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
A46-3 (+B2) - C77-59 (E1)	B - W-B	Input	Ignition power supply	Engine switch on (IG)	11 to 14 V	-
A46-2 (+B) - C77-59 (E1)	L - W-B	Input	Ignition power supply	Engine switch on (IG)	11 to 14 V	-
A46-46 (MREL) - C77-59 (E1)	G - W-B	Input	Ignition power supply	Engine switch on (IG)	11 to 14 V	-
A46-1 (BATT) - C77-59 (E1)	P - W-B	Input	+B power supply	Always	11 to 14 V	-
C77-59 (E1) - Body ground	W-B - Body ground	-	Ground	Always	Below 1 Ω	-
A46-45 (IMO) - C77-59 (E1)	B - W-B	Output	EFI communication input (Signal input from ECM to ID code box (immobiliser code ECU))	Engine switch off	11 to 14 V	-
A46-45 (IMO) - C77-59 (E1)	B - W-B	Output	EFI communication input (Signal input from ECM to ID code box (immobiliser code ECU))	Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after cable disconnected and reconnected to battery	Pulse generation (See waveform 1)	-
A46-28 (IMI) - C77-59 (E1)	W - W-B	Input	EFI communication input (Signal output from ID code box (immobiliser code ECU) to ECM)	Engine switch off	11 to 14 V → 1 V or less	-
A46-28 (IMI) - C77-59 (E1)	W - W-B	Input	EFI communication input (Signal output from ID code box (immobiliser code ECU) to ECM)	Engine switch turned on (IG) using registered electrical key transmitter sub-assembly	Pulse generation (See waveform 2)	-

(b) Using an oscilloscope, check the waveform.

NOTICE:

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

(1) Waveform 1 (Reference)

Approximately 160 ms.

Approximately 270 ms.

Measurement Condition

Item	Content
Tester Connection	A46-45 (IMO) - C77-59 (E1)
Tool Setting	2 V/DIV., 500 ms./DIV.
Condition	Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after cable disconnected and reconnected to battery

(2) Waveform 2 (Reference)

Approximately 160 ms.

Approximately 270 ms.

Measurement Condition

Item	Content
Tester Connection	A46-28 (IMI) - C77-59 (E1)
Tool Setting	2 V/DIV., 500 ms./DIV.
Condition	Engine switch turned on (IG) using registered electrical key transmitter sub-assembly

CHECK ENGINE SWITCH

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

Terminal No. (Symbol)	Wiring Color	Input / Output	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
I35-3 (GND) - Body ground	W - Body ground	-	Transponder key amplifier ground	Always	Below 1 Ω	-

(b) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Input / Output

Terminal Description

Condition

Specified Condition

Related Data List Item/DTC

I35-1 (ANT1) - I35-3 (GND)

B - W

Input / Output

Signal input from certification ECU (smart key ECU assembly)

(Code sent from certification ECU (smart key ECU assembly) to transponder key amplifier built into engine switch, and then transmitted by transponder key amplifier antenna as radio waves)

Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

Pulse generation

(See waveform 1)

BCC Malfunction
Abnormal Status
Different Encrypt Code
Different Serial Number
Frame Error
Response
HINT:

If immobiliser key code verification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above

I35-7 (ANT2) - I35-3 (GND)

G - W

Input / Output

Signal output to certification ECU (smart key ECU assembly)

(Radio waves from transponder key amplifier built into engine switch used to detect key information. Key information then sent to certification ECU (smart key ECU assembly))

Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

Pulse generation

(See waveform 2)

NOTICE:

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

(1) Waveform 1 (Reference)

Measurement Condition

Item	Content
Tester Connection	I35-1 (ANT1) - I35-3 (GND)
Tool Setting	20 V/DIV., 200 ms./DIV.
Condition	Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

(2) Waveform 2 (Reference)

Measurement Condition

Item	Content
Tester Connection	I35-7 (ANT2) - I35-3 (GND)
Tool Setting	20 V/DIV., 200 ms./DIV.
Condition	Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

TERMINALS OF ECU

for Manual Transaxle

except Manual Transaxle

for Manual Transaxle

except Manual Transaxle

for Manual Transaxle

except Manual Transaxle

for Manual Transaxle

except Manual Transaxle

for Manual Transaxle

except Manual Transaxle

for Hatchback

for Sedan

for Hatchback

for Sedan

for Manual Transaxle

except Manual Transaxle

Measurement Condition

Measurement Condition

Measurement Condition

Measurement Condition

Measurement Condition

Measurement Condition

for Manual Transaxle

except Manual Transaxle

for Manual Transaxle

except Manual Transaxle

Measurement Condition

Measurement Condition

Measurement Condition

Measurement Condition

Measurement Condition

Measurement Condition