IMMOBILISER SYSTEM(w/ Entry and Start System) TERMINALS OF ECU

CHECK ENGINE SWITCH

1. 

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

   Terminal No. (Symbol)	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
   G24-6 (AGND) - Body ground	-	BR - Body ground	Transponder key amplifier ground	Always	Below 1 Ω	-
   G24-7 (TXCT) - G24-6 (AGND)	Input	L - BR	Immobiliser communication input	Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more elapsed after driver door opened and then closed	Below 1 V	-
   G24-8 (CODE) - G24-6 (AGND)	Output	W - BR	Immobiliser communication output	Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more elapsed after driver door opened and then closed	Below 1 V	-
   G24-10 (VC5) - G24-6 (AGND)	Input	R - BR	Transponder key amplifier power supply	Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more elapsed after driver door opened and then closed	Below 1 V	-

   *1: except Manual Transaxle

   *2: for Manual Transaxle

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

   Terminal No. (Symbol)	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
   G24-7 (TXCT) - G24-6 (AGND)	Input	L - BR	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, key not in cabin, within 30 seconds after engine switch pressed	Pulse generation (See waveform 1)	BCC Malfunction Abnormal Status Different Encrypt Code Different Serial Number Frame Error Response Tip: If immobiliser key code certification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above
   G24-8 (CODE) - G24-6 (AGND)	Output	W - BR	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, engine switch pressed with key held near engine switch*	Pulse generation (See waveform 2)
   G24-10 (VC5) - G24-6 (AGND)	Input	R - BR	Transponder key amplifier power supply (Power supplied from certification ECU [smart key ECU assembly] when transponder key amplifier built into engine switch activated)	Engine switch off, key not in cabin, within 30 seconds after engine switch pressed	Pulse generation (See waveform 3)	BCC Malfunction Abnormal Status Different Encrypt Code Different Serial Number Frame Error Response Tip: If immobiliser key code certification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above

   Tip:

   *: Remove the key battery before performing this inspection.

3. Inspect using an oscilloscope.

   Note:

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

   1. 

      Waveform 1 (Reference)

      Table 1. Measurement Condition

      Item	Content
      Tester Connection	G24-7 (TXCT) - G24-6 (AGND)
      Tool Setting	2 V/DIV., 20 ms./DIV.
      Condition	Engine switch off, key not in cabin, within 30 seconds after engine switch pressed

   2. 

      *a	Key held near engine switch

      Waveform 2 (Reference)

      Table 2. Measurement Condition

      Item	Content
      Tester Connection	G24-8 (CODE) - G24-6 (AGND)
      Tool Setting	2 V/DIV., 20 ms./DIV.
      Condition	Engine switch off, engine switch pressed with key held near engine switch*

      Tip:

      *: Remove the key battery before performing this inspection.

   3. 

      Waveform 3 (Reference)

      Table 3. Measurement Condition

      Item	Content
      Tester Connection	G24-10 (VC5) - G24-6 (AGND)
      Tool Setting	2 V/DIV., 200 ms./DIV.
      Condition	Engine switch off, key not in cabin, within 30 seconds after engine switch pressed

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

1. Disconnect the G82 certification ECU (smart key ECU assembly) connector.

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

   Tester Connection	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item
   G82-2 (+B) - G82-11 (E)	Input	W - BR	+B power supply	Always	11 to 14 V	-
   G82-10 (CUTB) - G82-11 (E)	Input	P - BR	Dark current cut pin	Always	11 to 14 V	-
   G82-11 (E) - Body ground	-	BR - Body ground	Ground	Always	Below 1 Ω	-

3. Reconnect the G82 certification ECU (smart key ECU assembly) connector.

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

   Terminal No. (Symbol)	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
   G84-5 (IG) - G82-11 (E)	Input	LG - BR	Ignition power supply	Engine switch off → on (IG)	Below 1 V → 11 to 14 V	Ignition Switch
   G84-18 (IND) - G82-11 (E)	Output	GR - BR	Security indicator output	Engine switch off → on (IG)	Pulse generation→ Below 2 V	-
   G84-9 (TXCT) - G84-24 (AGND)	Output	L - BR	Signal output to transponder key amplifier	Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more elapsed after driver door opened and then closed	Below 1 V	BCC Malfunction Abnormal Status Different Encrypt Code Different Serial Number Frame Error Response
   G84-7 (CODE) - G84-24 (AGND)	Input	W - BR	Signal input from transponder key amplifier	Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more elapsed after driver door opened and then closed	Below 1 V
   G84-1 (VC5) - G84-24 (AGND)	Output	R - BR	Transponder key amplifier power supply	Engine switch off, brake pedal*1 or clutch pedal*2 not depressed, 30 seconds or more elapsed after driver door opened and then closed	Below 1 V	BCC Malfunction Abnormal Status Different Encrypt Code Different Serial Number Frame Error Response
   G84-24 (AGND) - Body ground	-	BR - Body ground	Transponder key amplifier ground	Always	Below 1 Ω	-
   G82-14 (EFII) - G82-11 (E)*3	Input	LG - BR	EFI communication input (Signal input from ECM to certification ECU [smart key ECU assembly])	Engine switch off	11 to 14 V	B2799 B279A Engine Start Request EFI Code Receive
   G82-13 (EFIO) - G82-11 (E)*3	Output	P - BR	EFI communication output (Signal output from certification ECU [smart key ECU assembly] to ECM)	Engine switch off	Below 1 V

   *1: except Manual Transaxle

   *2: for Manual Transaxle

   *3: w/o ID code box (Immobiliser Code ECU)

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

   Terminal No. (Symbol)	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
   G84-9 (TXCT) - G84-24 (AGND)	Output	L - BR	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, key not in cabin, within 30 seconds after engine switch pressed	Pulse generation (See waveform 1)	BCC Malfunction Abnormal Status Different Encrypt Code Different Serial Number Frame Error Response
   G84-7 (CODE) - G84-24 (AGND)	Input	W - BR	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, engine switch pressed with key held near engine switch*1	Pulse generation (See waveform 2)
   G84-1 (VC5) - G84-24 (AGND)	Output	R - BR	Transponder key amplifier power supply (Power supplied from certification ECU [smart key ECU assembly] when transponder key amplifier built into engine switch activated)	Engine switch off, key not in cabin, within 30 seconds after engine switch pressed	Pulse generation (See waveform 3)
   G82-14 (EFII) - G82-11 (E)*2	Input	LG - BR	EFI communication input (Signal input from ECM to certification ECU [smart key ECU assembly])	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal	Pulse generation (See waveform 4)	B2799 B279A Engine Start Request EFI Code Receive
   G82-13 (EFIO) - G82-11 (E)*2	Output	P - BR	EFI communication output (Signal output from certification ECU [smart key ECU assembly] to ECM)	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal	Pulse generation (See waveform 5)

   Tip:

   • *1: Remove the key battery before performing this inspection.

   • *2: w/o ID code box (Immobiliser Code ECU)

6. Inspect using an oscilloscope.

   Note:

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

   1. 

      Waveform 1 (Reference)

      Table 4. Measurement Condition

      Item	Content
      Tester Connection	G84-9 (TXCT) - G84-24 (AGND)
      Tool Setting	2 V/DIV., 20 ms./DIV.
      Condition	Engine switch off, key not in cabin, within 30 seconds after engine switch pressed

   2. 

      *a	Key held near engine switch

      Waveform 2 (Reference)

      Table 5. Measurement Condition

      Item	Content
      Tester Connection	G84-7 (CODE) - G84-24 (AGND)
      Tool Setting	2 V/DIV., 20 ms./DIV.
      Condition	Engine switch off, engine switch pressed with key held near engine switch*

      Tip:

      *: Remove the key battery before performing this inspection.

   3. 

      Waveform 3 (Reference)

      Table 6. Measurement Condition

      Item	Content
      Tester Connection	G84-1 (VC5) - G84-24 (AGND)
      Tool Setting	2 V/DIV., 200 ms./DIV.
      Condition	Engine switch off, key not in cabin, within 30 seconds after engine switch pressed

   4. Waveform 4 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 7. Measurement Condition

      Item	Content
      Tester Connection	G82-14 (EFII) - G82-11 (E)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

   5. Waveform 5 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 8. Measurement Condition

      Item	Content
      Tester Connection	G82-13 (EFIO) - G82-11 (E)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

CHECK ID CODE BOX (IMMOBILISER CODE ECU) (w/ ID code box [Immobiliser Code ECU])

1. Disconnect the G44 ID code box (immobiliser code ECU) connector.

2. 

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

   Terminal No. (Symbol)	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
   G44-1 (+B) - Body ground	Input	BE - Body ground	+B power supply	Engine switch off	11 to 14 V	B2789
   G44-5 (GND) - Body ground	-	B - Body ground	Ground	Always	Below 1 Ω	B2789

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

3. Reconnect the G44 ID code box (immobiliser code ECU) connector.

4. Measure the voltage and check the pulse according to the value(s) in the table below.

   Terminal No. (Symbol)	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
   G44-3 (EFII) - G44-5 (GND)	Input	LG - B	EFI communication input (Signal input from ECM to certification ECU [smart key ECU assembly])	Engine switch off	11 to 14 V	B2799 B279A Engine Start Request EFI Code Receive
   G44-4 (EFIO) - G44-5 (GND)	Output	P - B	EFI communication output (Signal output from certification ECU [smart key ECU assembly] to ECM)	Engine switch off	Below 1 V
   G44-3 (EFII) - G44-5 (GND)	Input	LG - B	EFI communication input (Signal input from ECM to certification ECU [smart key ECU assembly])	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal	Pulse generation (See waveform 1)
   G44-4 (EFIO) - G44-5 (GND)	Output	P - B	EFI communication output (Signal output from certification ECU [smart key ECU assembly] to ECM)	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal	Pulse generation (See waveform 2)

5. Inspect using an oscilloscope.

   Note:

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

   1. Waveform 1 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 9. Measurement Condition

      Item	Content
      Tester Connection	G44-3 (EFII) - G44-5 (GND)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

   2. Waveform 2 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 10. Measurement Condition

      Item	Content
      Tester Connection	G44-4 (EFIO) - G44-5 (GND)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

1. 

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

   Terminal No. (Symbol)	Input/Output	Wiring Color	Terminal Description	Condition	Specified Condition	Related Data List Item/DTC
   G5-1 (GND) - Body ground	-	W-B - Body ground	Ground	Always	Below 1 Ω	-
   G5-3 (IGE) - G5-1 (GND)	Input	Y - W-B	Steering lock motor operation permission signal (motor operation permission signal supplied by certification ECU [smart key ECU assembly])	Steering lock motor operates when both conditions met, and then door opened: Shift lever in P (except Manual Transaxle) Key carried, engine switch turned on (IG), steering unlocked, and then engine switch turned off	Pulse generation (See waveform 1)	Power Supply Short Unlock Request Receive Lock Request Receive
   G5-4 (SLP1) - G5-1 (GND)	Output	G - W-B	Steering lock bar position signal (signal output from steering unlock sensor)	Steering locked → unlocked*	11 to 14 V → Below 1.2 V	Push Start Error Sensor Value
   G5-6 (IG2) - G5-1 (GND)	Input	P - W-B	IG signal (IG2 power supply input for steering lock motor)	Engine switch off → on (IG)	Below 1 V → 11 to 14 V	B2788 Ignition Switch
   G5-7 (B) - Body ground	Output	L - Body ground	Constant power supply	Always	11 to 14 V	B2788

   Tip:

   *: The steering locks when any door is opened with the shift lever in P (except Manual Transaxle) and the engine switch off. The steering unlocks when the engine switch is turned on (ACC).

2. Inspect using an oscilloscope.

   Note:

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

   1. 

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

      Waveform 1 (Reference)

      Table 11. Measurement Condition

      Item	Content
      Tester Connection	G5-3 (IGE) - G5-1 (GND)
      Tool Setting	2 V/DIV., 20 ms./DIV.
      Condition	Steering lock motor operates when both conditions met, and then door opened: Shift lever in P* Key carried, engine switch turned on (IG), steering unlocked, and then engine switch turned off

      *: except Manual Transaxle

CHECK ECM (for 2AR-FE)

1. Inspect using an oscilloscope.

   Note:

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

   1. Waveform 1 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 12. Measurement Condition

      Item	Content
      Tester Connection	A62-29 (IMO) - B77-16 (E1)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

   2. Waveform 2 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 13. Measurement Condition

      Item	Content
      Tester Connection	A62-28 (IMI) - B77-16 (E1)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

CHECK ECM (for 3ZR-FE [for K111, K111F])

1. Inspect using an oscilloscope.

   Note:

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

   1. Waveform 1 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 14. Measurement Condition

      Item	Content
      Tester Connection	A62-29 (IMO) - B75-16 (E1)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

   2. Waveform 2 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 15. Measurement Condition

      Item	Content
      Tester Connection	A62-28 (IMI) - B75-16 (E1)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

CHECK ECM (for 3ZR-FE [except K111, K111F], 3ZR-FAE)

1. Inspect using an oscilloscope.

   Note:

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

   1. Waveform 1 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 16. Measurement Condition

      Item	Content
      Tester Connection	A62-45 (IMO) - B93-59 (E1)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

   2. Waveform 2 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 17. Measurement Condition

      Item	Content
      Tester Connection	A62-28 (IMI) - B93-59 (E1)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

CHECK ECM (for 2AD-FHV, 2AD-FTV [for DPF], 2AD-FTV [for CCo])

1. Inspect using an oscilloscope.

   Note:

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

   1. Waveform 1 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 18. Measurement Condition

      Item	Content
      Tester Connection	A61-15 (IMO) - B76-109 (E1)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

   2. Waveform 2 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 19. Measurement Condition

      Item	Content
      Tester Connection	A61-16 (IMI) - B76-109 (E1)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

CHECK ECM (for 2WW)

1. Inspect using an oscilloscope.

   Note:

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

   1. Waveform 1 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 20. Measurement Condition

      Item	Content
      Tester Connection	A62-44 (IMO) - B112-4 (E1)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal

   2. Waveform 2 (Reference)

      

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 21. Measurement Condition

      Item	Content
      Tester Connection	A62-34 (IMI) - B112-4 (E1)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Check waveform within 3 seconds of starter operation and initial combustion, or within 3 seconds of engine switch first being turned on (IG) after cable disconnected and reconnected to negative (-) battery terminal