Engine Immobiliser System (W/ Entry And Start System) -- Terminals Of Ecu |
CHECK ENGINE SWITCH |
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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 E123-6 (AGND) - Body ground - LG - Body ground Transponder key amplifier ground Always Below 1 Ω - E123-7 (TXCT) - E123-6 (AGND) Input G - LG Immobiliser communication input Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V - E123-8 (CODE) - E123-6 (AGND) Output B - LG Immobiliser communication output Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V - E123-10 (VC5) - E123-6 (AGND) Input BE - LG Transponder key amplifier power supply Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V - 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 E123-7 (TXCT) - E123-6 (AGND) Input G - LG 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
- HINT:
- 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
E123-8 (CODE) - E123-6 (AGND) Output B - LG 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)E123-10 (VC5) - E123-6 (AGND) Input BE - LG 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)- HINT:
- *: Remove the transmitter battery before performing this inspection.
- BCC Malfunction
Using an oscilloscope, check the waveform.
- NOTICE:
- The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 1 (Reference)
Measurement Condition Item Content Tester Connection E123-7 (TXCT) - E123-6 (AGND) Tool Setting 2 V/DIV., 20 ms./DIV. Condition Engine switch off, key not in cabin, within 30 seconds after engine switch pressed Waveform 2 (Reference)
Measurement Condition Item Content Tester Connection E123-8 (CODE) - E123-6 (AGND) Tool Setting 2 V/DIV., 20 ms./DIV. Condition Engine switch off, engine switch pressed with key held near engine switch* - HINT:
- *: Remove the transmitter battery before performing this inspection.
Waveform 3 (Reference)
Measurement Condition Item Content Tester Connection E123-10 (VC5) - E123-6 (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) |

Disconnect the E130 certification ECU (smart key ECU assembly) connector.
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 E130-10 (+B) - E130-11 (E) Input P - BR +B power supply Engine switch of 11 to 14 V - E130-11 (E) - Body ground - BR - Body ground Ground Always Below 1 Ω - Reconnect the E130 certification ECU (smart key ECU assembly) connector.
Measure the voltage and resistance and 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 E130-14 (TXCT) - E130-12 (AGND) Output G - LG Signal output to transponder key amplifier Engine 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
E130-13 (CODE) - E130-12 (AGND) Input B - LG Signal input from transponder key amplifier Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V E130-15 (VC5) - E130-12 (AGND) Output BE - LG Transponder key amplifier power supply Engine switch off, brake pedal not depressed, 30 seconds or more elapsed after driver door opened and then closed Below 1 V E130-12 (AGND) - Body ground - LG - Body ground Transponder key amplifier ground Always Below 1 Ω E130-19 (IND) - E130-11 (E) Output V - BR Security indicator output Engine switch off → on (IG) Pulse generation → Below 2 V - - BCC Malfunction
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 E130-14 (TXCT) - E130-12 (AGND) Output G - LG 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
E130-13 (CODE) - E130-12 (AGND) Input B - LG 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* Pulse generation
(See waveform 2)E130-15 (VC5) - E130-12 (AGND) Output BE - LG 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)- HINT:
- *: Remove the transmitter battery before performing this inspection.
- BCC Malfunction
Using an oscilloscope, check the waveform.
- NOTICE:
- The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 1 (Reference)
Measurement Condition Item Content Tester Connection E130-14 (TXCT) - E130-12 (AGND) Tool Setting 2 V/DIV., 20 ms./DIV. Condition Engine switch off, key not in cabin, within 30 seconds after engine switch pressed Waveform 2 (Reference)
Measurement Condition Item Content Tester Connection E130-13 (CODE) - E130-12 (AGND) Tool Setting 2 V/DIV., 20 ms./DIV. Condition Engine switch off, engine switch pressed with key held near engine switch* - HINT:
- *: Remove the transmitter battery before performing this inspection.
Waveform 3 (Reference)
Measurement Condition Item Content Tester Connection E130-15 (VC5) - E130-12 (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 ID CODE BOX (IMMOBILISER CODE ECU) |
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Disconnect the E124 ID code box (immobiliser code ECU) connector.
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 E124-1 (+B) - Body ground Input W - Body ground +B power supply Engine switch off 11 to 14 V B2789 E124-5 (GND) - Body ground - BR - Body ground Ground Always Below 1 Ω B2789 Reconnect the E124 ID code box (immobiliser code ECU) connector.
Measure the voltage and 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 E124-3 (EFII) - E124-5 (GND) Input W - BR EFI communication input
(Signal input from ECM to ID code box [immobiliser code ECU])Engine switch off 11 to 14 V - B2799
- B279A
- EFI Code Receive
- Engine Start Request
E124-4 (EFIO) - E124-5 (GND) Output P - BR EFI communication output (Signal output from ID code box [immobiliser code ECU] to ECM) Engine switch off 11 to 14 V E124-3 (EFII) - E124-5 (GND) Input W - BR EFI communication input (Signal input from ECM to ID code box [immobiliser code ECU]) Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
(See waveform 1)E124-4 (EFIO) - E124-5 (GND) Output P - BR EFI communication output (Signal output from ID code box [immobiliser code ECU] to ECM) Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
(See waveform 2)- B2799
Using an oscilloscope, check the waveform.
- NOTICE:
- The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 1 (Reference)
Text in Illustration *a Approximately 160 ms *b Approximately 270 ms Measurement Condition Item Content Tester Connection E124-3 (EFII) - E124-5 (GND) Tool Setting 2 V/DIV., 500 ms./DIV. Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Waveform 2 (Reference)
Text in Illustration *a Approximately 160 ms *b Approximately 270 ms Measurement Condition Item Content Tester Connection E124-4 (EFIO) - E124-5 (GND) Tool Setting 2 V/DIV., 500 ms./DIV. Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected
CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) |
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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 E26-1 (GND) - Body ground - W-B - Body ground Ground Always Below 1 Ω - E26-3 (IGE) - E26-1 (GND) Input W - 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
- Electrical key transmitter sub-assembly 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
E26-4 (SLP1) - E26-1 (GND) Output R - W-B Steering lock bar position signal (signal output from steering unlock sensor) Steering locked → unlocked* 11 to 14 V → Below 1.5 V Sensor Value E26-6 (IG2) - E26-1 (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 E26-7 (B) - Body ground Input G - Body ground Constant power supply Engine switch off 11 to 14 V B2788 - HINT:
- *: The steering locks when any door is opened with the shift lever in P and the engine switch off. The steering unlocks when the engine switch is turned on (ACC).
- Shift lever in P
Using an oscilloscope, check the waveform.
- NOTICE:
- The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 1 (Reference)
Text in Illustration *a Steering lock motor not operating *b Steering lock motor operating Measurement Condition Item Content Tester Connection E26-3 (IGE) - E26-1 (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
- Electrical key transmitter sub-assembly carried, engine switch turned on (IG), steering unlocked, and then engine switch turned off
- Shift lever in P
CHECK ECM (FOR 3UR-FE) |

Measure the voltage and resistance and 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 A38-3 (+B2) - C45-81 (E1) Input B - W-B Ignition power supply Engine switch on (IG) 11 to 14 V - A38-2 (+B) - C45-81 (E1) Input B - W-B Ignition power supply Engine switch on (IG) 11 to 14 V - A38-6 (MREL) - C45-81 (E1) Output V - W-B EFI-MAIN NO. 1 relay operation signal Engine switch on (IG) 11 to 14 V - C45-41 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω - C45-81 (E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω - C45-43 (E02) - Body ground - BR - Body ground Ground Always Below 1 Ω - A38-1 (BATT) - C45-81 (E1) Input L - W-B +B power supply Always 11 to 14 V - A38-48 (IMO) - C45-81 (E1) Output W - W-B ID code box (immobiliser code ECU) communication output Engine switch off Below 1 V - A38-48 (IMO) - C45-81 (E1) Output W - W-B ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
(See waveform 1)- A38-46 (IMI) - C45-81 (E1) Input P - W-B ID code box (immobiliser code ECU) communication input Engine switch off Below 1 V - A38-46 (IMI) - C45-81 (E1) Input P - W-B ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
(See waveform 2)- Using an oscilloscope, check the waveform.
- NOTICE:
- The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 1 (Reference)
Text in Illustration *a Approximately 160 ms *b Approximately 270 ms Measurement Condition Item Content Tester Connection A38-48 (IMO) - C45-81 (E1) Tool Setting 2 V/DIV., 500 ms./DIV. Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Waveform 2 (Reference)
Text in Illustration *a Approximately 160 ms *b Approximately 270 ms Measurement Condition Item Content Tester Connection A38-46 (IMI) - C45-81 (E1) Tool Setting 2 V/DIV., 500 ms./DIV. Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected
CHECK ECM (FOR 1UR-FE, 1GR-FE) |

Measure the voltage and resistance and check for pulses according to the value(s) in the table below.
for LHD: Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC A38-2 (+B2) - C45-81 (E1) Input B - W-B Ignition power supply Engine switch on (IG) 11 to 14 V - A38-3 (+B) - C45-81 (E1) Input B - W-B Ignition power supply Engine switch on (IG) 11 to 14 V - A38-34 (MREL) - C45-81 (E1) Output V - W-B EFI-MAIN NO. 1 relay operation signal Engine switch on (IG) 11 to 14 V - C45-43 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω - C45-81 (E1) - Body ground - W-B - Body ground Ground Always Below 1 Ω - C45-42 (E02) - Body ground - BR - Body ground Ground Always Below 1 Ω - A38-1 (BATT) - C45-81 (E1) Input L - W-B +B power supply Always 11 to 14 V - A38-29 (IMO) - C45-81 (E1) Output W - W-B ID code box (immobiliser code ECU) communication output Engine switch off Below 1 V - A38-29 (IMO) - C45-81 (E1) Output W - W-B ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
(See waveform 1)- A38-40 (IMI) - C45-81 (E1) Input P - W-B ID code box (immobiliser code ECU) communication input Engine switch off Below 1 V - A38-40 (IMI) - C45-81 (E1) Input P - W-B ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
(See waveform 2)- for RHD: Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC A52-2 (+B2) - C46-81 (E1) Input B - BR Ignition power supply Engine switch on (IG) 11 to 14 V - A52-3 (+B) - C46-81 (E1) Input B - BR Ignition power supply Engine switch on (IG) 11 to 14 V - A52-34 (MREL) - C46-81 (E1) Output V - BR EFI-MAIN NO. 1 relay operation signal Engine switch on (IG) 11 to 14 V - C46-43 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω - C46-81 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω - C46-42 (E02) - Body ground - BR - Body ground Ground Always Below 1 Ω - A52-1 (BATT) - C46-81 (E1) Input L - BR +B power supply Always 11 to 14 V - A52-29 (IMO) - C46-81 (E1) Output W - BR ID code box (immobiliser code ECU) communication output Engine switch off Below 1 V - A52-29 (IMO) - C46-81 (E1) Output W - BR ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
(See waveform 1)- A52-40 (IMI) - C46-81 (E1) Input P - BR ID code box (immobiliser code ECU) communication input Engine switch off Below 1 V - A52-40 (IMI) - C46-81 (E1) Input P - BR ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
(See waveform 2)- Using an oscilloscope, check the waveform.
- NOTICE:
- The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 1 (Reference)
Text in Illustration *a Approximately 160 ms *b Approximately 270 ms Measurement Condition Item Content Tester Connection A38-29 (IMO) - C45-81 (E1)*1
A52-29 (IMO) - C46-81 (E1)*2Tool Setting 2 V/DIV., 500 ms./DIV. Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected - *1: for LHD
- *2: for RHD
- *1: for LHD
Waveform 2 (Reference)
Text in Illustration *a Approximately 160 ms *b Approximately 270 ms Measurement Condition Item Content Tester Connection A38-40 (IMI) - C45-81 (E1)*1
A52-40 (IMI) - C46-81 (E1)*2Tool Setting 2 V/DIV., 500 ms./DIV. Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected - *1: for LHD
- *2: for RHD
- *1: for LHD
CHECK ECM (FOR 1VD-FTV) |

Measure the voltage and resistance and check for pulses according to the value(s) in the table below.
for LHD: Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC A38-1 (+B2) - C45-81 (E1) Input B - BR Ignition power supply Engine switch on (IG) 11 to 14 V - A38-2 (+B) - C45-81 (E1) Input B - BR Ignition power supply Engine switch on (IG) 11 to 14 V - A38-44 (MREL) - C45-81 (E1) Output V - BR EFI-MAIN NO. 1 relay operation signal Engine switch on (IG) 11 to 14 V - C45-22 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω - C45-81 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω - C45-21 (E02) - Body ground - BR - Body ground Ground Always Below 1 Ω - A38-20 (BATT) - C45-81 (E1) Input L - BR +B power supply Always 11 to 14 V - A38-10 (IMO) - C45-81 (E1) Output W - BR ID code box (immobiliser code ECU) communication output Engine switch off Below 1 V - A38-10 (IMO) - C45-81 (E1) Output W - BR ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
(See waveform 1)- A38-11 (IMI) - C45-81 (E1) Input P - BR ID code box (immobiliser code ECU) communication input Engine switch off Below 1 V - A38-11 (IMI) - C45-81 (E1) Input P - BR ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
(See waveform 2)- for RHD: Terminal No. (Symbol) Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item/DTC A52-1 (+B2) - C46-81 (E1) Input B - BR Ignition power supply Engine switch on (IG) 11 to 14 V - A52-2 (+B) - C46-81 (E1) Input B - BR Ignition power supply Engine switch on (IG) 11 to 14 V - A52-44 (MREL) - C46-81 (E1) Output V - BR EFI-MAIN NO. 1 relay operation signal Engine switch on (IG) 11 to 14 V - C46-22 (E01) - Body ground - W-B - Body ground Ground Always Below 1 Ω - C46-81 (E1) - Body ground - BR - Body ground Ground Always Below 1 Ω - C46-21 (E02) - Body ground - BR - Body ground Ground Always Below 1 Ω - A52-20 (BATT) - C46-81 (E1) Input L - BR +B power supply Always 11 to 14 V - A52-10 (IMO) - C46-81 (E1) Output W - BR ID code box (immobiliser code ECU) communication output Engine switch off Below 1 V - A52-10 (IMO) - C46-81 (E1) Output W - BR ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
(See waveform 1)- A52-11 (IMI) - C46-81 (E1) Input P - BR ID code box (immobiliser code ECU) communication input Engine switch off Below 1 V - A52-11 (IMI) - C46-81 (E1) Input P - BR ID code box (immobiliser code ECU) communication input Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected Pulse generation
(See waveform 2)- Using an oscilloscope, check the waveform.
- NOTICE:
- The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 1 (Reference)
Text in Illustration *a Approximately 160 ms *b Approximately 270 ms Measurement Condition Item Content Tester Connection A38-10 (IMO) - C45-81 (E1)*1
A52-10 (IMO) - C46-81 (E1)*2Tool Setting 2 V/DIV., 500 ms./DIV. Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected - *1: for LHD
- *2: for RHD
- *1: for LHD
Waveform 2 (Reference)
Text in Illustration *a Approximately 160 ms *b Approximately 270 ms Measurement Condition Item Content Tester Connection A38-11 (IMI) - C45-81 (E1)*1
A52-11 (IMI) - C46-81 (E1)*2Tool Setting 2 V/DIV., 500 ms./DIV. Condition Within 3 seconds of engine start or within 3 seconds of engine switch turned on (IG) after battery cable disconnected and reconnected - *1: for LHD
- *2: for RHD
- *1: for LHD