Toyota Camry 2007-2009 Service Manual - Engine_Immobiliser

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

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 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.

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–1

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.

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

PARTS LOCATION

EI–3

ECM

SECURITY INDICATOR LIGHT:

ID CODE BOX

ENGINE SWITCH

CLOCK

CERTIFICATION ECU

MAIN BODY ECU

DLC3

STREEING LOCK ECU

B128351E01

EI–4

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

SYSTEM DIAGRAM

Enigine Switch

- Transponder Key Amplifier (with Key Coil)

Main Body ECU

Certification ECU

ID Code Box

ECM

Steering Lock ECU

LIN Communication Line

Communication table:

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

ID code box Certification ECU

• Matching request random number signal

Matching request random number signal

B128344E02

LIN

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

Component Outline

Transponder key coil/amplifier (built into engine switch)

Indoor electrical key oscillator

Door control receiver

Security indicator

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

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 certification ECU. Certification ECU request signal is activated when the key is brought into the vehicle interior and the engine switch is pushed.

Receives an ID code from the key in the actuation area and transmits it to the certification ECU.

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 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 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)

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.

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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.

VEHICLE BROUGHT TO WORKSHOP

CRANK ENGINE FOR MORE THAN 10 SECONDS

CHECK 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

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.

GO TO SFI SYSTEM

GO TO DTC CHART

GO TO STEP 6

END

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

OVERALL ANALYSIS AND TROUBLESHOOTING

(a) DATA LIST/ACTIVE TEST (See page EI-24) (b) TERMINALS OF ECU (See page EI-15)

ADJUST, REPAIR OR REPLACE

CONFIRMATION TEST

EI–9

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

TOYOTA Mark (Ornament Surface) TOYOTA Mark (Ornament Surface)

Key Key

B139204E01

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

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

Key ID codes can be registered and erased

Certification ECU

Some keys are lost

Key ID codes cannot be either registered or erased

At least 1 key is available

ID code box

All keys are lost

2. Reregister all keys (new key ID registration)

1. Erase key codes (key ID erasure) PROCEDURE "D"

2. Perform additional key registration procedure (additional key ID registration)

3. Replace certification ECU -

4. Reregister all keys (new key ID registration) HINT: If some keys are not registered during above steps, they will be disabled because they cannot be registered later

1. Replace certification ECU -

2. Replace ID code box -

3. Reregister all keys (new key ID registration) HINT: If key codes cannot be erased or additional keys cannot be registered due to a 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 -

2. Register recognition codes in ECUs (ECU code registration)

3. ECU communication ID registration PROCEDURE "F"

1. Replace ID code box -

2. Replace certification ECU -

3. Reregister all keys (new key ID registration) HINT: 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"

PROCEDURE "B"

PROCEDURE "C"

PROCEDURE "B"

PROCEDURE "A"

PROCEDURE "E"

PROCEDURE "A"

EI–11

EI–12

Part to be replaced Condition Procedure Reference

Steering lock ECU

Main body ECU No condition required Replace main body ECU -

ECM No condition required

Key

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

1. Replace steering lock ECU -

Customer has brought at least 1 key

All keys are lost

Customer has brought at least 1 key

All keys are lost

2. Register recognition codes in ECUs (ECU code registration)

1. Replace steering lock ECU -

2. Replace certification ECU -

3. Replace ID code box -

4. Reregister all keys (new key ID registration) HINT: 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"

1. Replace ECM -

2. ECU communication ID registration PROCEDURE "F"

1. Using remaining key, erase lost key code (key ID erasure)

2. Register additional keys as necessary (additional key ID registration)

1. Replace certification ECU -

2. Replace ID code box -

3. Register all keys (new key ID registration) HINT: 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"

PROCEDURE "E"

PROCEDURE "A"

PROCEDURE "D"

PROCEDURE "E"

PROCEDURE "A"

3. KEY REGISTRA TION

(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)

1. Start of registration 1. Connect intelligent tester (with CAN VIM) to DLC3

2. Confirmation of ECU code Perform operation according to prompts on tester screen

3. Verification of unregistered key *1 Hold unregistered key close to engine switch (For details, refer to

4. Registration of ID code Perform operation according to prompts on tester screen

5. End of registration Finish new key ID code registration

Process Procedure

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

HINT: The mode is automatically selected by tester, new registration mode or add mode

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

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

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

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)

Additional key ID registration

Process Procedure

1. Start of registration 1. Connect intelligent tester (with CAN VIM) to DLC3

2. Confirmation of registered key *1 Perform operation according to prompts on intelligent tester screen

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

5. Registration of ID code Perform operation according to prompts on tester screen

6. End of registration Finish key ID code registration

2. Turn engine switch on (IG)

3. Select "SMART ACCESS / ID UTILITY / SMART CODE REG" from tester menu

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

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

*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

(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

(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.

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.

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

Engine Immobiliser System:

Symptom Suspected area See page

Engine does not start

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.

1. Key EI-24

2. ID code box power source circuit EI-45

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

EI–18

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

TERMINALS OF ECU

1. CHECK ENGINE SWITCH

E52





      

(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.

B146454E01

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

CODE (E52-10) - AGND (E52-8) W - G

TXCT (E52-9) - AGND (E52-8) GR - G Key code output signal

Demodulated signal of key code data

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 Press engine switch and

hold key close to engine switch*

Key is not in cabin Below 1 V Press engine switch and

hold key close to engine switch*

HINT:

*: Remove the key battery before performing this

inspection.

If the result is not as specified, the switch may have

a malfunction.

Pulse generation

(see waveform 1)

Pulse generation

(see waveform 2)

GND

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

(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.

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

B139211E01

(2) Waveform 2 (Reference)

Item Content

Symbols (Ter minal No.) TXCT (E52-9) - AGND (E52-8) Tool Setting 2 V/DIV., 20 ms./DIV.

Condition

Press engine switch and hold key close to engine switch*

EI–19

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

B139212E01

E58

3816391740

HINT: *: Remove the key battery before performing this inspection.

2. CHECK CERTIFICATION ECU

789

123456

191820212223242526272829303132331034113512361337

2610271128

17181920212223724825

(a) Disconnect the E58 ECU connector. (b) Measure the resistance and voltage according to

the value(s) in the table below.

1122133144155166

B106648E23

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.

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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 Eng ine switch ground Always Below 1 Ω

VC5 (E58-30) - AGND (E58-40) R - G

CODE (E58-9) - AGND (E58-40) W - G Engine switch CODE input

TXCT (E58-8) - AGND (E58-40) GR - G

Engine switch power supply

Engine switch TXCT output

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 Press engine switch and

hold key close to engine switch*

Key is not in cabin Below 1 V Press engine switch and

hold key close to engine switch*

Pulse generation (see

waveform 1)

Pulse generation (see

waveform 2)

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)

GND

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

B139211E01

Item Content

Symbols (Terminal No.) CODE (E58-9) - 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.

(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.

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

B139212E01

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

3. CHECK ID CODE BOX

E50

(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 Co ndition 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.

EI–21

B118534E03

Symbols (Terminal No.) Wiring Color Terminal Description Co ndition Specified Condition

Engine switch off Below 1 V

EFII (E50-5) - GND (E50-8) G - W-B ECM input signal

EFIO (E50-6) - GND (E50-8) L - W-B ECM output signal

Engine switch on (IG) Engine switch off Below 1 V Engine switch on (IG)

Pulse generation (see waveform 1)

Pulse generation (see waveform 2)

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.) EFII (E50-5) - GND (E50-8)

GND

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

Tool Setting 10 V/DIV., 100 ms./DIV. Condition Engine switch on (IG)

B139209E01

EI–22

GND

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

(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

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

B139210E01

E51

(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

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.

B118684E03

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

5. CHECK ECM

EI–23

C55















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





A55























(a) Measure the resistance and voltage according to

the value(s) in the table below.

Symbols (Terminal No.) Wiring Color Terminal Description Co ndition 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

BATT (A55-20) - E1 (C55-81) Y - W-B

+B (A55-2) - E1 (C55-81) R - W-B Power source of ECM

IMI (A55-11) - E1 (C55-81) Y - W-B

IMO (A55-10) - E1 (C55-81) G - W-B

Battery (for measuring battery voltage and for ECM memory)

Immobiliser code ECU input signal

Immobiliser code ECU output signal

Always 10 to 14 V

Engine switch off Below 1 V Engine switch on (IG) 10 to 14 V Engine switch off Below 1 V

Engine switch on (IG)

Pulse generation (see waveform 1)

Engine switch off Below 1 V Engine switch on (IG)

Pulse generation (see waveform 2)

A107881E14

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

malfunction.

EI–24

GND

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

(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)

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

B139210E01

(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.

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

B139209E01

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

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

connectors.

Vehicle Rear Side

EI–25

Vehicle Front Side

the value(s) in the table below.

Symbols (Terminal No.) Wiring Color Terminal Description Co ndition 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

B128347E01

EI–26

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

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

DIAGNOSIS SYSTEM

CANH

SIL

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.

CANL

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

CANH (6) - CG (4) HIGH-level CAN bus line

CANL (14) - CG (4) LOW-level CAN bus line

CANH (6) - BAT (16) HIGH-level CAN bus line

CANL (14) - BAT (16) LOW-level CAN bus line

BAT

H100769E16

Engine switch off Engine switch off Engine switch off Engine switch off Engine switch off

54 to 69 Ω 200 Ω or higher 200 Ω or higher

6 kΩ or higher 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 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

DLC3

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

DTC CHECK / CLEAR

1. CHECK DTC

(a) Connect the intelligent tester to the Controller Area

Network V ehicle Interface Mo dule (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

Intelligent Tester

C131977E01

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

DLC3. (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–27

EI–28

SMART:

Item

IG SW

ACC SW

IMMOBILISER

MASTER KEY

SUB KEY

BCC

STATUS

ENCRYPT CODE

SERIAL NUMBER

FRAME

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). (c) Read the DATA LIST.

Measurement Item / Display

(Range)

Engine switch on (IG) signal / ON or OFF

Engine switch on (ACC) signal / ON or OFF

Immobiliser system status / SET or UNSET

Master key code signal / MATCH or NO MATCH

Sub-key (Master key) code signal / MATCH or NO MATCH

Transponder chip signal / OK or NGOK: Correct data sent

Transponder chip data / OK or NGOK: Data OK

Transponder chip signal / OK or NGOK: Correct data sent

Normal Condition Diagnostic Note

ON: Engine switch on (ACC, IG) or start OFF: Engine switch off

SET: Key is not in cabin UNSET: Key is in cabin

MATCH: Master key code is sent NO MATCH: Unmatched master key code is sent

MATCH: Sub-key (master key) code is sent NO MATCH: Unmatched sub-key (master key) code is sent

NG: Incorrect data sent

NG: Data error

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)

SMART:

Item Test Details Diagnostic Note

SECURITY INDIC Turn security indicator ON/OFF -

EI–29

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

B2785 Communication Malfunction

between ECUs Connected by LIN

B2786 No Response from Steering Lock

ECU

B2789 No Response from ID BOX 1. Wire harness

B278A Short to GND in Immobiliser

B2790 ID BOX EEPROM Malfunction ID code box EI-39 B2791 Communication Condition Failure

System Power Source Circuit

between ECM

2. Engine switch

3. Certification ECU

1. Wire harness

2. Certification ECU

3. Main body ECU

4. Steering lock ECU

5. ID code box

1. Wire harness

2. Certification ECU

3. Steering lock ECU

2. Certification ECU

3. ID code box

1. Wire harness

2. Engine switch

3. Certification ECU

1. Wire harness

2. ID code box

3. ECM

EI-27

EI-29

EI-32

EI-34

EI-36

EI-40

ECM Diagnostic Tr ouble Code Chart:

DTC No. Detection Item Trouble Area See page

B2799 Engine Immobiliser System 1. Wire harness

2. ECM

EI-42

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.

+ 77 hidden pages

Toyota Camry 2007-2009 Service Manual - Engine_Immobiliser

Specifications and Main Features

Frequently Asked Questions

User Manual