THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model (NR Series)) TERMINALS OF ECU

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

2,0.417 2.417,0.667 0.417,0.25 3.26,0.406 3.677,0.656 0.417,0.25 4.5,0.417 4.917,0.667 0.417,0.25 2.083,0.458 2.396,0.656 0.313,0.198 10 false O62 3.333,0.448 3.646,0.646 0.313,0.198 10 false O61 4.646,0.458 4.958,0.656 0.313,0.198 10 false I1

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	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
O62-21 (NE) - Body ground	Engine speed signal	Always	10 kΩ or higher	Engine Condition
O61-24 (STP1) - Body ground	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)	Power source	Always	11 to 14 V	-
I1-22 (P) - I1-18 (E)	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	Dark current cut pin*	Always	11 to 14 V	-
I1-18 (E) - Body ground	GND	Always	Below 1 Ω	-
I1-13 (SSW3) - Body ground	SSW3 contact signal	Engine switch pushed → Engine switch not pushed	Below 15 Ω → 10 kΩ or higher	Start Switch3
I1-20 (SSW2) - Body ground	SSW2 contact signal	Engine switch pushed → Engine switch not pushed	Below 15 Ω → 10 kΩ or higher	Start Switch2
I1-23 (SSW1) - Body ground	SSW1 contact signal	Engine switch pushed → Engine switch not pushed	Below 15 Ω → 10 kΩ or higher	Start Switch1
I1-7 (SPD) - Body ground	Vehicle speed signal	Always	30 kΩ or higher	Vehicle Speed Signal

*: 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).

c.

Connect the O61, O62 and I1 certification ECU (smart key ECU assembly) connectors.

d.

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

Tester Connection	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
O62-1 (STA) - I1-18 (E)	When starting the engine, this monitors the voltage sent from terminal STAR to the starter relay to judge whether the engine is "being started".	Engine switch pressed and held with brake pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off)	6 V or higher* → 1.0 V or less	-
O62-2 (STAR) - I1-18 (E)	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.	Engine switch pressed and held with brake pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off)	6 V or higher* → 1.0 V or less	-
O62-2 (STAR) - I1-18 (E)	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))	9 V or higher → 2.7 V or less	Neutral SW/ Clutch SW
O62-21 (NE) - I1-18 (E)	Engine speed signal	Idling (engine warmed up)	Pulse generation (See waveform 1)	Engine Condition
O61-24 (STP1) - I1-18 (E)	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)	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)	Steering lock motor operation command signal (Steering lock motor operation permission signal sent from the certification ECU (smart key ECU assembly))	When a door is opened, the steering lock motor will be operated if all of the following conditions are met: 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)	LIN communication line	Engine switch on (IG)	Pulse generation	Steering Lock Start Cond
I1-22 (P) - I1-18 (E)	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)	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)	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)	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)	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)	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)	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)	Output to No. 1 indoor electrical key antenna assembly (front floor)	Procedure: 1. Engine switch off 2. Electrical key transmitter sub-assembly not inside vehicle 3. Within 30 seconds of closing any door	Pulse generation (See waveform 3)	-
I1-9 (CG5B) - I1-18 (E)	Output to No. 1 indoor electrical key antenna assembly (front floor) (terminal on opposite side of component from CLG5 output terminal)	Procedure: 1. Engine switch off 2. Electrical key transmitter sub-assembly not inside vehicle 3. Within 30 seconds of closing any door	Pulse generation (See waveform 3)	-
I1-11 (AGND) - 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)	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 4)	· BCC Malfunction · Abnormal Status · Different Encrypt Code · Different Serial Number · Frame Error · Response
I1-6 (ANT2) - I1-11 (AGND)	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 5)
I1-19 (IND) - I1-18 (E)	Security indicator output	Engine switch off → on (IG)	Pulse generation → Below 2 V	-

HINT:: ·

*: 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:

-

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.

i.

2.948,1.729 3.281,1.885 0.333,0.156 10 false GND

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.

ii.

2.875,1.177 3.229,1.344 0.354,0.167 10 false GND

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.

iii.

0.188,1.042 0.646,1.24 0.458,0.198 10 false GND 1.01,1.917 1.469,2.115 0.458,0.198 10 false *a 2.135,1.938 2.594,2.135 0.458,0.198 10 false *b

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

Waveform 3

Measurement Condition
Item	Content
Tester Connection	I1-8 (CLG5) - I1-18 (E) I1-9 (CG5B) - I1-18 (E)
Tool Setting	2 V/DIV., 500 ms/DIV.
Condition	Procedure: 1. Engine switch off 2. Electrical key transmitter sub-assembly not inside vehicle 3. Within 30 seconds of closing any door

iv.

0.302,1.021 0.76,1.219 0.458,0.198 10 false GND

Waveform 4

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

v.

0.354,1.021 0.813,1.219 0.458,0.198 10 false GND

Waveform 5

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)

3.417,0.313 3.833,0.563 0.417,0.25 3.5,0.344 3.813,0.542 0.313,0.198 10 false I59

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)	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
I59-1 (GND) - Body ground	Ground	Always	Below 1 Ω	-
I59-6 (IG2) - I59-1 (GND)	IG signal (IG2 power supply input for steering lock motor)	Engine switch off	Below 1 V	-
I59-6 (IG2) - I59-1 (GND)	IG signal (IG2 power supply input for steering lock motor)	Engine switch on (IG)	11 to 14 V	-
I59-7 (B) - Body ground	Constant power supply	Always	11 to 14 V	-

c.

Connect the I59 steering lock ECU (steering lock actuator or upper bracket assembly) connector.

d.

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
I59-3 (IGE) - I59-1 (GND)	Steering lock motor operation permission signal (motor operation permission signal supplied by certification ECU (smart key ECU assembly))	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)	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)	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:

-

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)

3.344,0.146 3.792,0.417 0.448,0.271 3.458,0.188 4.073,0.385 0.615,0.198 10 false I20

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	Terminal Description	Condition	Specified Condition	Related Data List Item
I20-1 (+B) - Body ground	Power source	Always	11 to 14 V	-
I20-5 (GND) - Body ground	Ground	Always	Below 1 Ω	-

c.

Reconnect the I20 ID code box (immobiliser code ECU) connector.

d.

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

Tester Connection	Terminal Description	Condition	Specified Condition	Related Data List Item
I20-3 (EFII) - I20-5 (GND)	EFI communication input (Signal input from ECM to ID code box (immobiliser code ECU))	Engine switch off	11 to 14 V	Entry&Start · EFI Code Receive · Engine Start Request
I20-3 (EFII) - I20-5 (GND)	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)	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)	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)	LIN communication line	Engine switch on (IG)	Pulse generation	Entry&Start · 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.

i.

Waveform 1

0.917,1.271 1.375,1.469 0.458,0.198 10 GND 2.719,1.354 3.177,1.552 0.458,0.198 10 *a 2.906,1.354 3.365,1.552 0.458,0.198 10 *b

*a

Approximately 160 ms

*b

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

ii.

Waveform 2

0.844,1.24 1.302,1.438 0.458,0.198 10 GND 3.115,1.323 3.344,1.531 0.229,0.208 10 *a 3.313,1.323 3.542,1.531 0.229,0.208 10 *b

*a

Approximately 160 ms

*b

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

2.333,0.417 2.75,0.667 0.417,0.25 5.75,0.5 6.167,0.75 0.417,0.25 2.406,0.458 2.865,0.656 0.458,0.198 10 false C78 5.833,0.542 6.292,0.74 0.458,0.198 10 false A46

a.

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
A46-3 (+B2) - C78-53 (E1)	Ignition power supply	Engine switch on (IG)	11 to 14 V	-
A46-2 (+B) - C78-53 (E1)	Ignition power supply	Engine switch on (IG)	11 to 14 V	-
A46-46 (MREL) - C78-53 (E1)	Ignition power supply	Engine switch on (IG)	11 to 14 V	-
A46-1 (BATT) - C78-53 (E1)	+B power supply	Always	11 to 14 V	-
C78-53 (E1) - Body ground	Ground	Always	Below 1 Ω	-
A46-45 (IMO) - C78-53 (E1)	EFI communication input (Signal input from ECM to ID code box (immobiliser code ECU))	Engine switch off	11 to 14 V	-
A46-45 (IMO) - C78-53 (E1)	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) - C78-53 (E1)	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) - C78-53 (E1)	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.

i.

Waveform 1 (Reference)

0.896,1.24 1.354,1.438 0.458,0.198 10 false GND 2.719,1.354 3.177,1.552 0.458,0.198 10 false *a 2.906,1.354 3.365,1.552 0.458,0.198 10 false *b

*a

Approximately 160 ms.

*b

Approximately 270 ms.

Measurement Condition
Item	Content
Tester Connection	A46-45 (IMO) - C78-53 (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

ii.

Waveform 2 (Reference)

0.844,1.24 1.302,1.438 0.458,0.198 10 GND 3.115,1.323 3.344,1.531 0.229,0.208 10 *a 3.313,1.323 3.542,1.531 0.229,0.208 10 *b

*a

Approximately 160 ms.

*b

Approximately 270 ms.

Measurement Condition
Item	Content
Tester Connection	A46-28 (IMI) - C78-53 (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

3.365,0.208 3.76,0.458 0.396,0.25 3.479,0.25 3.938,0.448 0.458,0.198 10 false I35

a.

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
I35-3 (GND) - 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)	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
I35-1 (ANT1) - I35-3 (GND)	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)	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)

c.

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.

i.

0.302,1.021 0.76,1.219 0.458,0.198 10 false GND

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

ii.

0.354,1.021 0.813,1.219 0.458,0.198 10 false GND

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