IMMOBILISER SYSTEM TERMINALS OF ECU

CHECK POWER 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
   H44-6 (AGND) - Body ground	-	R - Body ground	Transponder key amplifier ground	Always	Below 1 Ω	-
   H44-7 (TXCT) - H44-6 (AGND)	Input	GR - R	Immobiliser communication input	Power switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed	Below 1 V	-
   H44-8 (CODE) - H44-6 (AGND)	Output	L - R	Immobiliser communication output	Power switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed	Below 1 V	-
   H44-10 (VC5) - H44-6 (AGND)	Input	P - R	Transponder key amplifier power supply	Power switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed	Below 1 V	-

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
   H44-7 (TXCT) - H44-6 (AGND)	Input	GR - R	Signal input from certification ECU (smart key ECU assembly) (Code sent from certification ECU (smart key ECU assembly) to transponder key amplifier built into power switch, and then transmitted by transponder key amplifier antenna as radio waves)	Power switch off, key not in cabin, within 30 seconds after power 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
   H44-8 (CODE) - H44-6 (AGND)	Output	L - R	Signal output to certification ECU (smart key ECU assembly) (Radio waves from transponder key amplifier built into power switch used to detect key information. Key information then sent to certification ECU (smart key ECU assembly))	Power switch off, power switch pressed with key held near power switch*	Pulse generation (See waveform 2)
   H44-10 (VC5) - H44-6 (AGND)	Input	P - R	Transponder key amplifier power supply (Power supplied from certification ECU (smart key ECU assembly) when transponder key amplifier built into power switch activated)	Power switch off, key not in cabin, within 30 seconds after power switch pressed	Pulse generation (See waveform 3)

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

   Tip:

   *: Remove the transmitter 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	H44-7 (TXCT) - H44-6 (AGND)
      Tool Setting	2 V/DIV., 20 ms./DIV.
      Condition	Power switch off, key not in cabin, within 30 seconds after power switch pressed

   2. 

      Waveform 2 (Reference)

      Table 2. Text in Illustration

      *a	Key held against power switch

      Table 3. Measurement Condition

      Item	Content
      Tester Connection	H44-8 (CODE) - H44-6 (AGND)
      Tool Setting	1 V/DIV., 200 ms./DIV.
      Condition	Power switch off, power switch pressed with key held near power switch*

      Tip:

      *: Remove the transmitter battery before performing this inspection.

   3. 

      Waveform 3 (Reference)

      Table 4. Measurement Condition

      Item	Content
      Tester Connection	H44-10 (VC5) - H44-6 (AGND)
      Tool Setting	2 V/DIV., 200 ms./DIV.
      Condition	Power switch off, key not in cabin, within 30 seconds after power switch pressed

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

1. Disconnect the H57 and H58 certification ECU (smart key ECU assembly) connectors.

2. 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
   H58-5 (+B) - H57-1 (E)	Input	R - W-B	+B power supply	Always	11 to 14 V	-
   H58-4 (CUTB) - H57-1 (E)	Input	W - W-B	Stand-by power	Always	11 to 14 V	-
   H57-1 (E) - Body ground	-	W-B - Body ground	Ground	Always	Below 1 Ω	-

3. Reconnect the H57 and H58 certification ECU (smart key ECU assembly) connectors.

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
   H58-16 (IG) - H57-1 (E)	Input	LG - W-B	Ignition power supply	Power switch off → on (IG)	Below 1 V → 11 to 14 V	Ignition Switch
   H57-8 (IND) - H57-1 (E)	Output	SB - W-B	Security indicator output	Power switch off → on (IG)	Pulse generation → Below 2 V	-
   H58-3 (TXCT) - H57-6 (AGND)	Output	GR - R	Signal output to transponder key amplifier	Power switch off, brake pedal 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
   H58-13 (CODE) - H57-6 (AGND)	Input	L - R	Signal input from transponder key amplifier	Power switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed	Below 1 V
   H58-9 (VC5) - H57-6 (AGND)	Output	P - R	Transponder key amplifier power supply	Power switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed	Below 1 V
   H57-6 (AGND) - Body ground	-	R - Body ground	Transponder key amplifier ground	Always	Below 1 Ω

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
   H58-3 (TXCT) - H57-6 (AGND)	Output	GR - R	Signal output to transponder key amplifier (Code sent from certification ECU (smart key ECU assembly) to transponder key amplifier built into power switch, and then transmitted by transponder key amplifier antenna as radio waves)	Power switch off, key not in cabin, within 30 seconds after power switch pressed	Pulse generation (See waveform 1)	BCC Malfunction Abnormal Status Different Encrypt Code Different Serial Number Frame Error Response
   H58-13 (CODE) - H57-6 (AGND)	Input	L - R	Signal input from transponder key amplifier (Radio waves from transponder key amplifier built into power switch used to detect key information. Key information then sent to certification ECU (smart key ECU assembly))	Power switch off, power switch pressed with key held near power switch*	Pulse generation (See waveform 2)
   H58-9 (VC5) - H57-6 (AGND)	Output	P - R	Transponder key amplifier power supply (Power supplied from certification ECU (smart key ECU assembly) when transponder key amplifier built into power switch activated)	Power switch off, key not in cabin, within 30 seconds after power switch pressed	Pulse generation (See waveform 3)

   If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.

   Tip:

   *: Remove the transmitter battery before performing this inspection.

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 5. Measurement Condition

      Item	Content
      Tester Connection	H58-3 (TXCT) - H57-6 (AGND)
      Tool Setting	2 V/DIV., 20 ms./DIV.
      Condition	Power switch off, key not in cabin, within 30 seconds after power switch pressed

   2. 

      Waveform 2 (Reference)

      Table 6. Text in Illustration

      *a	Key held against power switch

      Table 7. Measurement Condition

      Item	Content
      Tester Connection	H58-13 (CODE) - H57-6 (AGND)
      Tool Setting	1 V/DIV., 200 ms./DIV.
      Condition	Power switch off, power switch pressed with key held near power switch*

      Tip:

      *: Remove the transmitter battery before performing this inspection.

   3. 

      Waveform 3 (Reference)

      Table 8. Measurement Condition

      Item	Content
      Tester Connection	H58-9 (VC5) - H57-6 (AGND)
      Tool Setting	2 V/DIV., 200 ms./DIV.
      Condition	Power switch off, key not in cabin, within 30 seconds after power switch pressed

CHECK ID CODE BOX (IMMOBILISER CODE ECU)

1. Disconnect the H15 ID code box (immobiliser code ECU) connector.

2. 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
   H15-1 (+B) - H15-5 (GND)	Input	R - W-B	+B power supply	Power switch off	11 to 14 V	B2789
   H15-5 (GND) - Body ground	-	W-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 H15 ID code box (immobiliser code ECU) connector.

4. Measure the voltage and check the 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
   H15-3 (EFII) - H15-5 (GND)	Input	LG - W-B	EFI communication input (Signal input from power management control ECU to ID code box (immobiliser code ECU))	Power switch off	11 to 14 V	B2799 B279A Engine Start Request EFI Code Receive
   H15-3 (EFII) - H15-5 (GND)	Input	LG - W-B	EFI communication input (Signal input from power management control ECU to ID code box (immobiliser code ECU))	Within 3 seconds of hybrid system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected	Pulse generation (See waveform 1)
   H15-4 (EFIO) - H15-5 (GND)	Output	SB - W-B	EFI communication output (Signal output from ID code box (immobiliser code ECU) to power management control ECU)	Power switch off	Below 1 V
   H15-4 (EFIO) - H15-5 (GND)	Output	SB - W-B	EFI communication output (Signal output from ID code box (immobiliser code ECU) to power management control ECU)	Within 3 seconds of hybrid system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected	Pulse generation (See waveform 2)

   
   

   • If the result is not as specified, the ID code box (immobiliser code ECU) may have a malfunction.

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)

      Table 9. Text in Illustration

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 10. Measurement Condition

      Item	Content
      Tester Connection	H15-3 (EFII) - H15-5 (GND)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Within 3 seconds of hybrid system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

   2. 

      Waveform 2 (Reference)

      Table 11. Text in Illustration

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 12. Measurement Condition

      Item	Content
      Tester Connection	H15-4 (EFIO) - H15-5 (GND)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Within 3 seconds of hybrid system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

1. Measure the voltage, resistance and check the 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
   H18-1 (GND) - Body ground	-	W-B - Body ground	Ground	Always	Below 1 Ω	-
   H18-3 (IGE) - H18-1 (GND)	Input	L - W-B	Steering lock motor operation permission signal (motor operation permission signal supplied by power management control ECU)	Steering lock motor operates when both conditions met, and then door opened: Shift lever in P Key carried, power switch turned on (IG), steering unlocked, and then power switch turned off	Pulse generation (See waveform 1)	Power Supply Short Unlock Request Receive Lock Request Receive
   H18-4 (SLP1) - H18-1 (GND)	Output	P - W-B	Steering lock bar position signal (signal output from steering unlock sensor)	Steering locked → unlocked*1	11 to 14 V → Below 1.2 V	Push Start Error Sensor Value
   H18-6 (IG2) - H18-1 (GND)	Input	LG - W-B	IG signal (IG2 power supply input for steering lock motor)	Power switch off → on (IG)	Below 1 V → 11 to 14 V	B2788 Ignition Switch
   H18-7 (B) - Body ground	Input	B - Body ground	Constant power supply	Always	11 to 14 V	B2788

   If the result is not as specified, the steering lock ECU (steering lock actuator assembly) may have a malfunction.

   Tip:

   *1: The steering locks when any door is opened with the shift lever in P and the power switch off. The steering unlocks when the power 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. 

      Waveform 1 (Reference)

      Table 13. Text in Illustration

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

      Table 14. Measurement Condition

      Item	Content
      Tester Connection	H18-3 (IGE) - H18-1 (GND)
      Tool Setting	2 V/DIV., 200 ms./DIV.
      Condition	Steering lock motor operates when both conditions met, and then door opened: Shift lever in P Key carried, power switch turned on (IG), steering unlocked, and then power switch turned off

CHECK POWER MANAGEMENT CONTROL ECU

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)

      Table 15. Text in Illustration

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 16. Measurement Condition

      Item	Content
      Tester Connection	H2-20 (IMO) - H1-6 (E1)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

   2. 

      Waveform 2 (Reference)

      Table 17. Text in Illustration

      *a

      Approximately 160 ms

      *b

      Approximately 270 ms

      Table 18. Measurement Condition

      Item	Content
      Tester Connection	H2-21 (IMI) - H1-6 (E1)
      Tool Setting	2 V/DIV., 500 ms./DIV.
      Condition	Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected