Toyota Camry 2007-2009 Service Manual - Engine_Immobiliser

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)	EI–1

ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)

PRECAUTION

1. PRECAUTIONS WHEN USING INTELLIGENT TESTER

(a) When using the intelligent tester to troubleshoot the smart access system: Connect the intelligent tester to the DLC3 while the engine switch off, and turn a door courtesy light switch on and off at 1.5-second intervals until communication between the tester and vehicle begins.

2. PRECAUTIONS FOR EACH FUNCTION
(a) Precautions for the electrical key:
The electrical key is a precision instrument. Be sure
to observe the following:
(1)	Do not drop or strike the electrical key.
(2)	Do not allow the electrical key to be kept in a
	high temperature place for a long time.
(3)	Do not use an ultrasonic washing machine to
	clean the electrical key.
(4)	Keep the electrical key away from magnets or
	magnetized items during use.
(5)	Do not attach any stickers to the electrical key.
(b) Precautions for the engine start function:
(1)	Before starting the engine, firmly depress the
	brake pedal until the indicator of the engine
	switch illuminates in green.
(2)	Be sure to turn the engine switch off before
	disconnecting the negative (-) battery terminal.
	When the battery terminal is disconnected, the
	power source mode (off, on (ACC), on (IG)) will
	remain in memory. When the vehicle's battery	EI
	becomes discharged, be careful to remember

the power source mode.

(3)After the battery is removed and reinstalled, be sure to wait 10 seconds or more before the next engine start. The engine may not start immediately after the battery is reinstalled.

(c)Precautions for the battery built into the electrical key and the vehicle battery:

(1)When the doors are locked (locked state), signals are emitted by the vehicle at a predetermined interval. If the vehicle were to remain parked for a long time, the vehicle battery could become discharged. To prevent this, periodically charge the vehicle battery, or disable the entry and start system.

EI–2	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)
	(2) When the doors are locked (locked state), and
	the electrical key remains in the door oscillator
	detection area, the system will maintain periodic
	communication with the electrical key. If the
	vehicle remains parked in this state for a long
	time, the vehicle and key batteries could
	become discharged. If the vehicle is not being
	used, keep the electrical key at least 2 m (6.56
	ft) from the vehicle.

EI

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)	EI–3

PARTS LOCATION

	ECM
SECURITY INDICATOR LIGHT:
	ENGINE SWITCH
	CLOCK
ID CODE BOX
	EI
	CERTIFICATION ECU
DLC3
MAIN BODY ECU	STREEING LOCK ECU
	B128351E01

EI–4	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)

SYSTEM DIAGRAM

Enigine Switch
- Transponder Key	Certification ECU
Amplifier (with Key Coil)
Main Body ECU	ID Code Box	Steering Lock ECU
	ECM
LIN Communication Line
EI Communication table:		B128344E02

	Transmitting ECU (Transmitter)	Receiving ECU (Receiver)	Signals	Communication method
	Main body ECU	Certification ECU	Key code recognition signal	LIN
	ID code box	Certification ECU	DTC (B2791) signal	LIN
			• Steering lock release signal
	ID code box	Steering lock ECU	• Matching request random	LIN
			number signal
	ID code box	Certification ECU	Matching request random number	LIN
			signal

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)	EI–5

SYSTEM DESCRIPTION

1. ENGINE IMMOBILISER SYSTEM DESCRIPTION

(a) The immobiliser system is a theft deterrent system

		that determines whether to disable starting of the
		SFI system based on a comparison of the key's ID
		codes and the vehicle's pre-registered code. The
		immobiliser system compares the vehicle
		certification ECU's pre-registered ID code with the
		ID of the key-embedded transponder chip. If the ID
		codes do not match, the immobiliser system
		activates and the SFI system cannot be started. The
		certification ECU manages communication with the
		ECM, main body ECU, steering lock ECU and ID
		code box. When the ID codes of the transponder
		chip and certification ECU match, the certification
		ECU authorizes the SFI system to start.
2. FUNCTION OF MAIN COMPONENT
Component		Outline
Transponder key coil/amplifier (built into engine switch)		Receives key ID code, amplifies ID code and outputs the code to the
		certification ECU.
		Transmits key detection signals within the detection area in the vehicle
		interior upon receiving a transmission request signal from the
Indoor electrical key oscillator		certification ECU.
		Certification ECU request signal is activated when the key is brought
		into the vehicle interior and the engine switch is pushed.
Door control receiver		Receives an ID code from the key in the actuation area and transmits
		it to the certification ECU.
Security indicator		Illuminates or starts flashing.
		Illumination is controlled by the certification ECU.
3.	SYSTEM FUNCTION
	(a) Using entry function
		(1) When the driver (or passenger) is sitting in the
		vehicle while carrying the key, and the engine
		switch is pressed while the brake pedal is
				EI
		depressed, the main body ECU recognizes that

the engine start operation has occurred and sends a certification request signal to the certification ECU. Upon receipt of the certification request signal, the certification ECU sends a request signal to the indoor electrical key oscillator. Upon receipt of the request signal, the indoor electrical key oscillator sends a request signal to detect if the key is inside the vehicle. When the key receives this request signal, it answers by sending an ID code containing a response code through the glass antenna to the door control receiver. Upon receipt of the ID code, the certification ECU analyzes the code. If the interior certification passes, then the main body ECU sends a certification pass response signal. When the main body ECU receives this signal, the ACC relay is switched on and the IG1 and IG2 relays are switched on in sequence. At this time, the

		EI–6	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)
			engine switch indicator illuminates in green.
			Then the certification ECU checks that the
			power source mode has been changed and
			sends a steering lock command signal to the
			main body ECU. After receiving this signal, the
			main body ECU supplies power to the steering
			lock actuator. Then (via the ID code box) the
			steering lock ECU confirms that the certification
			ECU is certified and drives the steering actuator
			motor until the steering lock is unlocked. After
			unlocking the steering lock, an unlock completed
			signal is sent to the certification ECU. Upon
			receipt of this signal, the certification ECU sends
			an unset command signal to the ID code box.
			Once this signal is received, the ID code box
			confirms that the certification ECU is certified,
			sends an immobiliser unset command signal to
			the ECM and sends a security indicator light off
			signal to the certification ECU.
			(b) Not using the entry function (when key battery is
			depleted)
			(1) When the driver is sitting in the vehicle while
			carrying the key and the brake pedal is
			depressed, the main body ECU recognizes that
			the stop light switch is on and sends a key
			confirmation request signal to the certification
			ECU. Upon receipt of this signal, the certification
			ECU drives the immobiliser amplifier built in the
			engine switch. At this time, the engine switch
			sends an RF wave communication signal to the
			immobiliser. If the driver holds the key up to the
			engine switch at this time, the engine switch
			receives the immobiliser RF wave signal and
			responds by sending a radio wave signal. When
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			the engine switch receives the radio wave signal
			from the key, it duplicates the signal and sends
			an ID code to the certification ECU. Upon receipt
			of the ID code, the code is analyzed. If the
			certification passes, a key certification pass
			response signal is sent to the main body ECU
			while simultaneously sending a sound buzzer
			request signal to the meter ECU. When the main
			body ECU receives this signal, the ACC relay is
			switched on and the IG1 and IG2 relays are
			switched on in sequence. At this time, the
			engine switch indicator illuminates in green.
			Then the certification ECU checks that the
			power source mode has been changed and
			sends a steering lock command signal to the
			main body ECU. After receiving this signal, the
			main body ECU supplies power to the steering
			lock actuator. Then (via the ID code box) the
			steering lock ECU confirms that the certification
			ECU is certified and drives the steering actuator

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)	EI–7

motor until the steering lock is unlocked. After unlocking the steering lock, an unlock completed signal is sent to the certification ECU. Upon receipt of this signal, the certification ECU sends an unset command signal to the ID code box. Once this signal is received, the ID code box confirms that the certification ECU is certified, sends an immobiliser unset command signal to the ECM and sends a security indicator light off signal to the certification ECU.

EI

EI–8	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:

• Use the following procedures to troubleshoot the engine immobiliser system.

• The intelligent tester should be used in steps 3 and 5.

1 VEHICLE BROUGHT TO WORKSHOP

NEXT

2CRANK ENGINE FOR MORE THAN 10 SECONDS

NEXT

3CHECK FOR DTCS

(a)Check for DTCs and note any codes that are output (see page EI-24).

(b)Delete the DTCs.

(c)Recheck for DTCs. Based on the DTCs output above, try

to duplicate the SFI system DTC or engine immobiliser system DTC by simulating the symptoms indicated by the DTC.

Result

				Result				Proceed to
			DTC output does not reoccur					A
			SFI system DTC output reoccurs					B
			Engine immobiliser system DTC output reoccurs					C
	EI
					B
								GO TO SFI SYSTEM
					C
								GO TO DTC CHART
			A

4 PROBLEM SYMPTOMS TABLE

(a)If the fault is not listed on the problem symptoms table, proceed to A.

(b)If the fault is listed on the problem symptoms table, proceed to B.

B GO TO STEP 6

A

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)	EI–9

5OVERALL ANALYSIS AND TROUBLESHOOTING

(a)DATA LIST/ACTIVE TEST (See page EI-24)

(b)TERMINALS OF ECU (See page EI-15)

NEXT

6ADJUST, REPAIR OR REPLACE

NEXT

7CONFIRMATION TEST

NEXT

END

EI

EI–10	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)

REGISTRATION

1.DESCRIPTION OF CODE REGISTRATION

HINT:

•ID codes are the same as recognition codes for the wireless transmitter and the engine immobiliser function. Registering an ID code enables the smart access system with push-button start, the wireless door lock control function and the engine immobiliser function to be operated.

•Code registration is needed when the certification ECU, ID code box, steering lock ECU or key is

replaced with a new one.

(a) PROCEDURE "1"

The vehicle with the smart access system with push-button start system does not have a key slot. Therefore, hold the key close to the engine switch to register the key, as shown in the illustration below.

Hold the key with its ornament surface within a range of 10 mm (0.39 in.) or less from the engine switch.

Communication distance: 10 mm (0.39 in.) or less from the engine switch.
Engine Switch	Key	Key

EI

TOYOTA Mark (Ornament Surface)

TOYOTA Mark (Ornament Surface)

B139204E01

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)	EI–11

2.PART REPLACEMENT KEY REGISTRATION

(a)The following table shows ECU replacement and key registration procedures in case the malfunctioning ECU has been identified after troubleshooting the smart access system with pushbutton start.

HINT:

•The following procedures indicated in the table below require the use of the intelligent tester:

New key ID registration Additional key ID registration Key ID erasure

ECU code registration

•If all of the registered keys are not available, replacement of the ID code box is also required.

•A maximum of 7 keys can be registered.

Part to be replaced	Condition			Procedure	Reference
			1.	Replace certification ECU	-
	Customer has brought all keys
			2. Reregister all keys (new key ID		PROCEDURE "B"
			registration)
			1.	Erase key codes (key ID erasure)	PROCEDURE "D"
			2.	Perform additional key registration	PROCEDURE "C"
			procedure (additional key ID registration)
		Key ID codes can be	3.	Replace certification ECU	-
			4. Reregister all keys (new key ID
		registered and erased
			registration)
			HINT:		PROCEDURE "B"
			If some keys are not registered during above
			steps, they will be disabled because they
Certification ECU			cannot be registered later
	Some keys are lost		1.	Replace certification ECU	-
			2.	Replace ID code box	-
			3.	Reregister all keys (new key ID
			registration)
			HINT:
		Key ID codes cannot					EI
			If key codes cannot be erased or additional
		be either registered or	keys cannot be registered due to a		PROCEDURE "A"
		erased	malfunction in certification ECU, replace ID
			code box and certification ECU. If some keys
			are not registered during above steps, they
			will be disabled because they cannot be
			registered later
			4.	ECU communication ID registration	PROCEDURE "F"
			1.	Replace ID code box	-
	At least 1 key is available		2.	Register recognition codes in ECUs (ECU	PROCEDURE "E"
			code registration)
			3.	ECU communication ID registration	PROCEDURE "F"
			1.	Replace ID code box	-
ID code box			2.	Replace certification ECU	-
			3.	Reregister all keys (new key ID
	All keys are lost		registration)
			HINT:		PROCEDURE "A"
			If some keys are not registered during above
			steps, they will be disabled because they
			cannot be registered later
			4.	ECU communication ID registration	PROCEDURE "F"

EI–12	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)
Part to be replaced		Condition		Procedure	Reference
			1.	Replace steering lock ECU	-
		Customer has brought at least 1 key
			2. Register recognition codes in ECUs (ECU		PROCEDURE "E"
			code registration)
			1.	Replace steering lock ECU	-
			2.	Replace certification ECU	-
Steering lock ECU			3.	Replace ID code box	-
			4.	Reregister all keys (new key ID
		All keys are lost	registration)
			HINT:		PROCEDURE "A"
			If some keys are not registered during above
			steps, they will be disabled because they
			cannot be registered later
			5.	ECU communication ID registration	PROCEDURE "F"
Main body ECU		No condition required	Replace main body ECU		-
ECM		No condition required	1.	Replace ECM	-
			2.	ECU communication ID registration	PROCEDURE "F"
			1.	Using remaining key, erase lost key code	PROCEDURE "D"
			(key ID erasure)
		Customer has brought at least 1 key
			2.	Register additional keys as necessary	PROCEDURE "E"
			(additional key ID registration)
			1.	Replace certification ECU	-
Key			2.	Replace ID code box	-
			3.	Register all keys (new key ID registration)
		All keys are lost	HINT:		PROCEDURE "A"
			If customer brings lost keys at later date, they
			can be registered using additional key ID
			registration function
			4.	ECU communication ID registration	PROCEDURE "F"

3.KEY REGISTRATION

(a)PROCEDURE "A"

New key ID registration (when replacing certification ECU and ID code box, or certification ECU, ID code box and steering lock ECU)

	EI		Process	Procedure
			1. Start of registration	1. Connect intelligent tester (with CAN VIM) to DLC3
				2. Turn engine switch on (IG)
				3. Select "SMART ACCESS / ID UTILITY / SMART CODE REG"
				from tester menu
				HINT:
				The engine switch cannot be turned on (IG) more than 10 times. After
				connecting tester, turn tester on while turning driver's side door
				courtesy light switch on and off repeatedly at 1.5-second intervals or
				less to continue key registration procedure
			2. Confirmation of ECU code	Perform operation according to prompts on tester screen
				HINT:
				The mode is automatically selected by tester, new registration mode
				or add mode
			3. Verification of unregistered key *1	Hold unregistered key close to engine switch (For details, refer to
				PROCEDURE "1")
				Confirm that wireless door lock buzzer sounds. Place unregistered
				key on front passenger's side seat
				Confirm that wireless door lock buzzer sounds
			4. Registration of ID code	Perform operation according to prompts on tester screen
			5. End of registration	Finish new key ID code registration

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)		EI–13
	*1: Repeat this process for each key which is to be
	registered for the vehicle. Finish the procedure for
	each key within 30 seconds. If the procedure for any
	of the keys has not been finished within the
	specified time, perform registration procedures from
	process 1 again. Make sure that only 1 key is in the
	cabin during registration procedures. If 2 or more
	keys are in the cabin simultaneously, electric waves
	will interfere with each other, preventing normal
	registration.
(b)	PROCEDURE "B"
	New key ID registration (when replacing certification
	ECU)
Process	Procedure
1. Start of registration	1. Connect intelligent tester (with CAN VIM) to DLC3
	2. Turn engine switch on (IG)
	3. Select "SMART ACCESS / ID UTILITY / SMART CODE REG"
	from tester menu
	HINT:
	The engine switch cannot be turned on (IG) more than 10 times. After
	connecting tester, turn tester on while turning driver's side door
	courtesy light switch on and off repeatedly at 1.5-second intervals or
	less to continue key registration procedure
2. Confirmation of ECU code	Perform operation according to prompts on tester screen
	HINT:
	The mode is automatically selected by tester, new registration mode
	or add mode
3. Confirmation of all registered keys *1	Hold unregistered key close to engine switch (For details, refer to
	PROCEDURE "1")
	Confirm that wireless door lock buzzer sounds
4. Confirmation of ECU code	Perform operation according to prompts on tester screen
5. Verification of unregistered key *2	Hold unregistered key close to engine switch (For details, refer to
	PROCEDURE "1")
	Confirm that wireless door lock buzzer sounds. Place unregistered
	key on front passenger side seat
	Confirm that wireless door lock buzzer sounds
					EI
5. Registration of ID code	Perform operation according to prompts on tester screen
6. End of registration	Finish new key ID code registration

*1: Repeat this process for each key registered for the vehicle. Finish the procedure for each key within 30 seconds. If the procedure for any of the keys has not been finished within the specified time, perform registration procedures from process 1 again. If performing the key confirmation procedure for a key, the security indicator comes on and remains on until all the keys are confirmed.

*2: Repeat this process for each key which is to be registered for the vehicle. Finish the procedure for each key within 30 seconds. If the procedure for any of the keys has not been finished within the specified time, perform registration procedures from 1 again. Make sure that only 1 key is in the cabin during registration procedures. If 2 or more keys are in the cabin simultaneously, electric waves will interfere with each other, preventing normal registration.

EI–14		ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)
		(c)	PROCEDURE "C"
			Additional key ID registration
		Process	Procedure
1.	Start of registration		1. Connect intelligent tester (with CAN VIM) to DLC3
			2. Turn engine switch on (IG)
			3. Select "SMART ACCESS / ID UTILITY / SMART CODE REG"
			from tester menu
2.	Confirmation of registered key *1		Perform operation according to prompts on intelligent tester screen
			HINT:
			The mode is automatically selected by tester, new registration mode
			or add mode
			Hold unregistered key close to engine switch (For details, refer to
			PROCEDURE "1")
			Confirm that wireless door lock buzzer sounds once
3.	Confirmation of ECU code		Perform operation according to prompts on tester screen
4.	Verification of unregistered key *2		Hold unregistered key close to engine switch (For details, refer to
			PROCEDURE "1")
			Confirm that wireless door lock buzzer sounds. Place unregistered
			key on front passenger's side seat
			Confirm that wireless door lock buzzer sounds
5.	Registration of ID code		Perform operation according to prompts on tester screen
6.	End of registration		Finish key ID code registration

EI

*1: Perform this process for one of the keys registered for the vehicle. Finish the procedure within 30 seconds. If the procedure has not been finished within the specified time, perform registration procedures from process 1 again.

*2: Repeat this process for each key which is to be registered for the vehicle. Finish the procedure for each key within 30 seconds. If the procedure for any of the keys has not been finished within the specified time, perform registration procedures from 1 again. Make sure that only 1 key is in the cabin during registration procedures. If 2 or more keys are in the cabin simultaneously, electric waves will interfere with each other, preventing normal registration.

(d)PROCEDURE "D" Key ID erasure HINT:

Erase all registered key codes except one.

	Process		Procedure
1.	Start of erasure	1.	Connect intelligent tester (with CAN VIM) to DLC3
		2.	Turn engine switch on (IG)
		3.	Select "SMART ACCESS / ID UTILITY / SMART CODE ERS"
			from tester menu
2.	Confirmation of registered key *1	Perform operation according to prompts on intelligent tester screen
		Hold unregistered key close to engine switch (For details, refer to
		PROCEDURE "1")
		Confirm that wireless door lock buzzer sounds once
3.	Confirmation of ECU code	Perform operation according to prompts on tester screen
4.	Erasure of ID code	Perform operation according to prompts on tester screen
5.	End of erasure	Finish key ID code erasure

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)	EI–15

*1: Perform this process for one of the keys registered for the vehicle. Finish the procedure within 30 seconds. If the procedure has not been finished within the specified time, perform erasure procedures from process 1 again.

(e)PROCEDURE "E" ECU code registration

	Process		Procedure
1.	Start of registration	1.	Connect intelligent tester (with CAN VIM) to DLC3
		2.	Turn engine switch on (IG)
		3.	Select "SMART ACCESS / ID UTILITY / ECU COMM ID REG / ID
			Code Box and Steering Lock" from tester menu
2.	Confirmation of registered key *1	Hold unregistered key close to engine switch (For details, refer to
		PROCEDURE "1")
		Confirm that wireless door lock buzzer sounds once
3.	Registration of ECU code	Perform operation according to prompts on tester screen
4.	End of registration	Finish ECU code registration

*1: Perform this process for one of the keys registered for the vehicle. Finish the procedure within 30 seconds. If the procedure has not been finished within the specified time, perform erasure procedures from process 1 again.

(f)PROCEDURE "F"

ECU communication ID registration

NOTICE:

•The ECU communication ID should be registered when the ID code box and/or the ECM is replaced in order to match these ECM communication ID.

•The engine cannot be started unless the ECM communication ID matches.

Register the ECU communication ID.

EI

CG

TC

SST

B139171E01

(1)Using SST, connect terminals TC and CG of the DLC3.

SST 09843-18040

EI–16	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)
	(2)	Turn the engine switch on (IG) and leave it for
		30 minutes.
		HINT:
		Do not start the engine.
	(3)	Turn the engine switch off and disconnect
		terminals TC and CG.
	(4)	Check that the engine starts.

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ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)	EI–17

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of the problem symptom. The potential cases of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected area in the order they are listed. Replace parts as necessary.

Engine Immobiliser System:

	Symptom		Suspected area	See page
		1.	Key	EI-24
		2.	ID code box power source circuit	EI-45
	Engine does not start	3.	Certification ECU power source circuit	EI-48
		4.	Steering lock ECU power source circuit	SR-30
		5.	Smart access system	DL-142
		6.	SFI system	ES-15

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EI–18	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)

TERMINALS OF ECU

1.CHECK ENGINE SWITCH

	E52
				B146454E01

				(a) Disconnect the E52 switch connector.
				(b) Measure the resistance according to the value(s) in
				the table below.
		Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
		AGND (E52-8) - Body ground	G - Body ground	Ground	Always	Below 1 Ω
				If the result is not as specified, there may be a
				malfunction on the wire harness side.
				(c) Reconnect the E52 switch connector.
				(d) Measure the resistance and voltage according to
				the value(s) in the table below.
		Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
		AGND (E52-8) - Body ground	G - Body ground	Ground	Always	Below 1 Ω
		VC5 (E52-14) - AGND (E52-8)	R - G	Power supply	Key is not in cabin	Below 1 V
					Press engine switch	4.6 to 5.4 V
					Key is not in cabin	Below 1 V
				Demodulated signal of key
		CODE (E52-10) - AGND (E52-8)	W - G		Press engine switch and	Pulse generation
				code data	hold key close to engine
						(see waveform 1)
					switch*
					Key is not in cabin	Below 1 V
EI
		TXCT (E52-9) - AGND (E52-8)	GR - G	Key code output signal	Press engine switch and	Pulse generation
					hold key close to engine
						(see waveform 2)
					switch*

HINT:

*: Remove the key battery before performing this inspection.

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

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)	EI–19

GND

Tool Setting: 2 V/DIV., 20 ms./DIV.

B139211E01

(e)Inspect using an oscilloscope.

(1) Waveform 1 (Reference)

	Item	Content
	Symbols (Terminal No.)	CODE (E52-10) - AGND (E52-8)
	Tool Setting	2 V/DIV., 20 ms./DIV.
	Condition	Press engine switch and hold key close
		to engine switch*

HINT:

*: Remove the key battery before performing this inspection.

										(2) Waveform 2 (Reference)
												Item							Content
						Symbols (Terminal No.)											TXCT (E52-9) - AGND (E52-8)
						Tool Setting											2 V/DIV., 20 ms./DIV.
						Condition											Press engine switch and hold key close
GND																	to engine switch*
												HINT:
												*: Remove the key battery before performing this
												inspection.
						2.		CHECK CERTIFICATION ECU
Tool Setting: 2 V/DIV., 20 ms./DIV.
			B139212E01
			E58																			EI
17 16 15	14 13 12 11	10	9	8	7	6	5	4	3	2	1	11	10	9	8	7	6	5	4	3	2	1
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18												28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12

B106648E23

(a)Disconnect the E58 ECU connector.

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

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
E (E58-17) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
+B (E58-1) - E (E58-17)	W - W-B	+B power supply	Always	10 to 14 V
IG (E58-18) - E (E58-17)	LG - W-B	Ignition power supply	Engine switch off	Below 1 V

If the result is not as specified, there may be a malfunction on the wire harness side.

(c) Reconnect the E58 ECU connector.

EI–20	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)

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

	Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
	AGND (E58-40) - Body ground	G - Body ground	Engine switch ground	Always	Below 1 Ω
	VC5 (E58-30) - AGND (E58-40)	R - G	Engine switch power	Key is not in cabin	Below 1 V
			supply	Press engine switch*	4.6 to 5.4 V
				Key is not in cabin	Below 1 V
	CODE (E58-9) - AGND (E58-40)	W - G	Engine switch CODE input	Press engine switch and	Pulse generation (see
				hold key close to engine	waveform 1)
				switch*
				Key is not in cabin	Below 1 V
			Engine switch TXCT
	TXCT (E58-8) - AGND (E58-40)	GR - G		Press engine switch and	Pulse generation (see
			output	hold key close to engine
					waveform 2)
				switch*

HINT:

*: Remove the key battery before performing this inspection.

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

		(e) Inspect using an oscilloscope.
		(1) Waveform 1 (Reference)
		Item	Content
		Symbols (Terminal No.)	CODE (E58-9) - AGND (E58-40)
		Tool Setting	2 V/DIV., 20 ms./DIV.
	GND	Condition	Press engine switch and hold key close
			to engine switch*
		HINT:
		*: Remove the key battery before performing this
		inspection.
		Tool Setting: 2 V/DIV., 20 ms./DIV.
EI		B139211E01

GND

Tool Setting: 2 V/DIV., 20 ms./DIV.

B139212E01

(2) Waveform 2 (Reference)

	Item	Content
	Symbols (Terminal No.)	TXCT (E58-8) - AGND (E58-40)
	Tool Setting	2 V/DIV., 20 ms./DIV.
	Condition	Press engine switch and hold key close
		to engine switch*

HINT:

*: Remove the key battery before performing this inspection.

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)	EI–21

3.CHECK ID CODE BOX

E50

B118534E03

		(a)	Disconnect the E50 ECU connector.
		(b)	Measure the resistance and voltage according to
			the value(s) in the table below.
Symbols (Terminal No.)	Wiring Color	Terminal Description		Condition	Specified Condition
GND (E50-8) - Body ground	W-B - Body ground	Ground		Always	Below 1 Ω
+B (E50-1) - GND (E50-8)	W - W-B	+B power supply		Always	10 to 14 V
			If the result is not as specified, there may be a
			malfunction on the wire harness side.
		(c)	Reconnect the E50 ECU connector.
		(d)	Measure the voltage according to the value(s) in the
			table below.
Symbols (Terminal No.)	Wiring Color	Terminal Description		Condition	Specified Condition
				Engine switch off	Below 1 V
EFII (E50-5) - GND (E50-8)	G - W-B	ECM input signal
				Engine switch on (IG)	Pulse generation
					(see waveform 1)
				Engine switch off	Below 1 V
EFIO (E50-6) - GND (E50-8)	L - W-B	ECM output signal
				Engine switch on (IG)	Pulse generation
					(see waveform 2)

	If the result is not as specified, the ECU may have a
	malfunction.		EI
	(e) Inspect using an oscilloscope.
	(1) Waveform 1 (Reference)
	Item	Content
	Symbols (Terminal No.)	EFII (E50-5) - GND (E50-8)
GND	Tool Setting	10 V/DIV., 100 ms./DIV.
	Condition	Engine switch on (IG)
	Tool Setting: 10 V/DIV., 100 ms./DIV.
	B139209E01

EI–22	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)

GND

Tool Setting: 10 V/DIV., 100 ms./DIV.

B139210E01

(2) Waveform 2 (Reference)

Item	Content
Symbols (Terminal No.)	EFIO (E50-6) - GND (E50-8)
Tool Setting	10 V/DIV., 100 ms./DIV.
Condition	Engine switch on (IG)

4.CHECK STEERING CONTROL ECU

E51

B118684E03

(a)Disconnect the E51 ECU connector.

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

			Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
			SGND (E51-2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
			GND (E51-1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
			B (E51-7) - Body ground	P - Body ground	+B power supply	Always	10 to 14 V
	EI
			IG2 (E51-6) - Body ground	B - Body ground	Ignition power supply	Engine switch off	0 V
						Engine switch on (IG)	10 to 14 V

If the result is not as specified, there may be a malfunction on the wire harness side.

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)

EI–23

5.

CHECK ECM

C55

A55

A107881E14

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

		Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
	E1 (C55-81) - Body ground		W-B - Body ground	Ground	Always	Below 1 Ω
	E01	(C55-22) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
	E02	(C55-21) - Body ground	B-W - Body ground	Ground	Always	Below 1 Ω
	E03	(C55-104) - Body ground	B - Body ground	Ground	Always	Below 1 Ω
	E04	(C55-23) - Body ground	W - Body ground	Ground	Always	Below 1 Ω
	E05	(C55-46) - Body ground	W - Body ground	Ground	Always	Below 1 Ω
	ME01 (C55-20) - Body ground		B - Body ground	Ground	Always	Below 1 Ω
				Battery (for measuring
	BATT (A55-20) - E1 (C55-81)		Y - W-B	battery voltage and for	Always	10 to 14 V
				ECM memory)
	+B (A55-2) - E1 (C55-81)		R - W-B	Power source of ECM	Engine switch off	Below 1 V
					Engine switch on (IG)	10 to 14 V
					Engine switch off	Below 1 V
	IMI (A55-11) - E1 (C55-81)		Y - W-B	Immobiliser code ECU				EI
						Pulse generation
				input signal	Engine switch on (IG)
						(see waveform 1)
				Immobiliser code ECU	Engine switch off	Below 1 V
	IMO (A55-10) - E1 (C55-81)		G - W-B
						Pulse generation
				output signal	Engine switch on (IG)
						(see waveform 2)

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

EI–24	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)

GND

Tool Setting: 10 V/DIV., 100 ms./DIV.

B139210E01

GND

Tool Setting: 10 V/DIV., 100 ms./DIV.

B139209E01

(b)Inspect using an oscilloscope.

(1) Waveform 1 (Reference)

Item	Content
Symbols (Terminal No.)	IMI (A55-11) - E1 (C55-81)
Tool Setting	10 V/DIV., 100 ms./DIV.
Condition	Engine switch on (IG)

(2) Waveform 2 (Reference)

Item	Content
Symbols (Terminal No.)	IMO (A55-10) - E1 (C55-10)
Tool Setting	10 V/DIV., 100 ms./DIV.
Condition	Engine switch on (IG)

6.CHECK MAIN BODY ECU (INSTRUMENT PANEL J/B)

(a)Disconnect the IF and IM junction block connectors.

EI

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)	EI–25

(b)Disconnect the E8, E7 and E6 main body ECU connectors.

	Vehicle Rear Side
IM
IF
	Vehicle Front Side
	E8
E7	EI
	E6
	B128347E01

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

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
GND1 (IF-10) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
GND2 (IM-9) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
GND3 (E8-1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
AM1 (E7-6) - Body ground	L - Body ground	+B power supply	Always	10 to 14 V
AM2 (E6-1) - Body ground	L - Body ground	+B power supply	Always	10 to 14 V

EI–26	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)

CG	SG CANH	SIL
	CANL	BAT
		H100769E16

If the result is not as specified, there may be a

malfunction on the wire harness side.

DIAGNOSIS SYSTEM

1.CHECK DLC3

(a)The vehicle's ECU uses ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.

Symbols (Terminal No.)	Terminal Description	Condition	Specified Condition
SIL (7) - SG (5)	Bus "+" line	During transmission	Pulse generation
CG (4) - Body ground	Chassis ground	Always	Below 1 Ω
SG (5) - Body ground	Signal ground	Always	Below 1 Ω
BAT (16) - Body ground	Battery positive	Always	10 to 14 V
CANH (6) - CANL (14)	CAN bus line	Engine switch off*	54 to 69 Ω
CANH (6) - CG (4)	HIGH-level CAN bus line	Engine switch off*	200 Ω or higher
CANL (14) - CG (4)	LOW-level CAN bus line	Engine switch off*	200 Ω or higher
CANH (6) - BAT (16)	HIGH-level CAN bus line	Engine switch off*	6 kΩ or higher
CANL (14) - BAT (16)	LOW-level CAN bus line	Engine switch off*	6 kΩ or higher

		NOTICE:
		*: Before measuring the resistance, leave the
		vehicle as is for at least 1 minute and do not
		operate the engine switch, any other switches or
		the doors.
		If the result is not as specified, the DLC3 may have
		a malfunction. Repair or replace the harness and
	EI	connector.
		(b) Connect the cable of the intelligent tester (with CAN
		VIM) to the DLC3, turn the engine switch on (IG)
		and attempt to use the intelligent tester. If the
		screen displays a communication error message, a
		problem exists in the vehicle side or tester side.
		HINT:
		• If communication is normal when the tool is
		connected to another vehicle, inspect the DLC3
		on the original vehicle.
		• If communication is still impossible when the tool
		is connected to another vehicle, the problem is
		probably in the tool itself. Consult the Service
		Department listed in the tool's instruction manual.
		DLC3
		Intelligent Tester
		C131977E01

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)	EI–27

DTC CHECK / CLEAR
1.	CHECK DTC
	(a) Connect the intelligent tester to the Controller Area
	Network Vehicle Interface Module (CAN VIM). Then
	connect the CAN VIM to the DLC3.
	(b) Turn the engine switch on (IG).
	(c) Read the DTCs by following the directions on the
	tester screen.
	HINT:
	Refer to the intelligent tester operator's manual for
	further details.
2.	CLEAR DTC
DLC3	(a) Connect the intelligent tester (with CAN VIM) to the
Intelligent Tester	DLC3.
C131977E01	(b) Turn the engine switch on (IG).

(c)Erase the DTCs by following the directions on the tester's screen.

HINT:

Refer to the intelligent tester operator's manual for further details.

EI

EI–28	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)

DATA LIST / ACTIVE TEST

1. READ DATA LIST

			HINT:
			Using the intelligent tester to read the DATA LIST allows
			the values or states of switches, sensors, actuators and
			other items to be read without removing any parts. This
			non-intrusive inspection can be very useful as
			intermittent conditions or signals may be discovered
			before parts or wiring is disturbed. Reading the DATA
			LIST information early in troubleshooting is one way to
			save diagnostic time.
			(a) Connect the intelligent tester (with CAN VIM) to the
				DLC3.
			(b) Turn the engine switch on (IG).
		SMART:	(c) Read the DATA LIST.
		Item	Measurement Item / Display	Normal Condition		Diagnostic Note
			(Range)
			Engine switch on (IG) signal / ON	ON: Engine switch on (ACC, IG)
		IG SW		or start		-
			or OFF
				OFF: Engine switch off
			Engine switch on (ACC) signal /	ON: Engine switch on (ACC, IG)
		ACC SW		or start		-
			ON or OFF
				OFF: Engine switch off
		IMMOBILISER	Immobiliser system status / SET	SET: Key is not in cabin		-
			or UNSET	UNSET: Key is in cabin
			Master key code signal / MATCH	MATCH: Master key code is sent
		MASTER KEY		NO MATCH: Unmatched master		-
			or NO MATCH
				key code is sent
				MATCH: Sub-key (master key)
		SUB KEY	Sub-key (Master key) code signal	code is sent		-
			/ MATCH or NO MATCH	NO MATCH: Unmatched sub-key
				(master key) code is sent
		BCC	Transponder chip signal / OK or	OK: Correct data sent		-
			NG	NG: Incorrect data sent
EI		STATUS	Transponder chip data / OK or	OK: Data OK		-
			NG	NG: Data error
		ENCRYPT CODE	Transponder chip signal / OK or	OK: Correct data sent		-
			NG	NG: Incorrect data sent
		SERIAL NUMBER	Transponder chip signal / OK or	OK: Correct data sent		-
			NG	NG: Incorrect data sent
		FRAME	Transponder chip signal / OK or	OK: Correct data sent		-
			NG	NG: Incorrect data sent

2.PERFORM ACTIVE TEST

HINT:

Performing the intelligent tester's ACTIVE TEST allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the ACTIVE TEST early in troubleshooting is one way to save time. The DATA LIST can be displayed during the ACTIVE TEST.

(a)Connect the intelligent tester (with CAN VIM) to the DLC3.

(b)Turn the engine switch on (IG).

(c)Perform the ACTIVE TEST by following the directions on the tester screen.

ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)			EI–29
SMART:
Item	Test Details	Diagnostic Note
SECURITY INDIC	Turn security indicator ON/OFF	-

EI

EI–30	ENGINE IMMOBILISER – ENGINE IMMOBILISER SYSTEM (w/ Smart Key System)

DIAGNOSTIC TROUBLE CODE CHART

Certification ECU Diagnostic Trouble Code Chart:

DTC No.	Detection Item		Trouble Area	See page
B2784	Antenna Coil Open / Short	1. Wire harness		EI-27
		2.	Engine switch
		3.	Certification ECU
B2785	Communication Malfunction	1.	Wire harness	EI-29
	between ECUs Connected by LIN	2.	Certification ECU
		3. Main body ECU
		4.	Steering lock ECU
		5.	ID code box
B2786	No Response from Steering Lock	1.	Wire harness	EI-32
	ECU	2.	Certification ECU
		3.	Steering lock ECU
B2789	No Response from ID BOX	1.	Wire harness	EI-34
		2.	Certification ECU
		3.	ID code box
B278A	Short to GND in Immobiliser	1.	Wire harness	EI-36
	System Power Source Circuit	2.	Engine switch
		3.	Certification ECU
B2790	ID BOX EEPROM Malfunction	ID code box		EI-39
B2791	Communication Condition Failure	1.	Wire harness	EI-40
	between ECM	2.	ID code box
		3. ECM

ECM Diagnostic Trouble Code Chart:

DTC No.	Detection Item	Trouble Area	See page
B2799	Engine Immobiliser System	1. Wire harness	EI-42
		2. ECM
		3. ID code box

HINT:

The DTCs for the engine immobiliser system are specified above. If other codes are output, check the DTC chart for the SFI system.

EI