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

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CHECK ENGINE SWITCH

Disconnect the D27 engine switch connector.
Measure the resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
D27-8 (AGND) - Body ground
B - Body ground
Ground
Always
Below 1 Ω
If the result is not as specified, there may be a malfunction in the wire harness.
Reconnect the D27 engine switch connector.

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

Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
D27-9 (TXCT) - D27-8 (AGND)
BR - B
Key code output signal
Engine switch off, 30 seconds or more after door opened or closed, and brake pedal or clutch pedal not depressed.
Below 1 V
D27-9 (TXCT) - D27-8 (AGND)
BR - B
Key code output signal
Engine switch off, key not in cabin, and 30 seconds or less after engine switch pushed.
Pulse generation
(See waveform 1)
D27-10 (CODE) - D27-8 (AGND)
SB - B
Demodulated signal of key code data
Engine switch off, 30 seconds or more after door opened or closed, and brake pedal or clutch pedal not depressed.
Below 1 V
D27-10 (CODE) - D27-8 (AGND)
SB - B
Demodulated signal of key code data
Engine switch off, and smart key brought near the engine switch and engine switch pushed*.
Pulse generation
(See waveform 2)
D27-14 (VC5) - D27-8 (AGND)
W - B
Power supply
Engine switch off, 30 seconds or more after door opened or closed, and brake pedal or clutch pedal not depressed.
Below 1 V
D27-14 (VC5) - D27-8 (AGND)
W - B
Power supply
Engine switch off, key not in cabin, and 30 seconds or less after engine switch pushed.
Pulse generation
(See waveform 3)

HINT:

*: Remove the key battery before performing this inspection.

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

Inspect using an oscilloscope.
1. Waveform 1 (Reference)
  Tester Connection
  D27-9 (TXCT) - D27-8 (AGND)
  Tool Setting
  2 V/DIV., 20 ms./DIV.
  Condition
  Engine switch off, key not in cabin, and 30 seconds or less after engine switch pushed.
2. Waveform 2
  Tester Connection
  D27-10 (CODE) - D27-8 (AGND)
  Tool Setting
  2 V/DIV., 20 ms./DIV.
  Condition
  Engine switch off, and smart key brought near the engine switch and engine switch pushed*.
  HINT:
  *: Remove the key battery before performing this inspection.
3. Waveform 3
  Tester Connection
  D27-14 (VC5) - D27-8 (AGND)
  Tool Setting
  2 V/DIV., 20 ms./DIV.
  Condition
  Engine switch off, key not in cabin, and 30 seconds or less after engine switch pushed.

CHECK CERTIFICATION ECU

Disconnect the D34 certification ECU connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
D34-1 (+B) - D34-15 (E)	B - W-B	+B power supply	Always	11 to 14 V
D34-15 (E) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

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

Reconnect the D34 certification ECU connector.

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

Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
D34-12 (TXCT) - D34-36 (AGND)
BR - B
Engine switch TXCT output
Engine switch off, 30 seconds or more after door opened or closed, and brake pedal or clutch pedal not depressed.
Below 1 V
D34-12 (TXCT) - D34-36 (AGND)
BR - B
Engine switch TXCT output
Engine switch off, key not in cabin, and 30 seconds or less after engine switch pushed.
Pulse generation
(See waveform 1)
D34-13 (CODE) - D34-36 (AGND)
SB - B
Engine switch CODE input
Key not in cabin
Below 1 V
D34-13 (CODE) - D34-36 (AGND)
SB - B
Engine switch CODE input
Key held close to engine switch*
Pulse generation
(See waveform 2)
D34-16 (IG) - D34-15 (E)
V - W-B
Ignition power supply
Engine switch off
Below 1 V
D34-16 (IG) - D34-15 (E)
V - W-B
Ignition power supply
Engine switch on (IG)
11 to 14 V
D34-28 (VC5) - D34-36 (AGND)
W - B
Engine switch power supply
Key not in cabin
Below 1 V
D34-28 (VC5) - D34-36 (AGND)
W - B
Engine switch power supply
Brake pedal depressed*
Pulse generation
(See waveform 3)
D34-36 (AGND) - Body ground
B - Body ground
Engine switch ground
Always
Below 1 Ω

HINT:

*: Remove the key battery before performing this inspection.

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

Inspect using an oscilloscope.
1. Waveform 1
  Tester Connection
  D34-12 (TXCT) - D34-36 (AGND)
  Tool Setting
  2 V/DIV., 20 ms./DIV.
  Condition
  Engine switch off, key not in cabin, and 30 seconds or less after engine switch pushed.
2. Waveform 2
  Item
  Content
  Tester Connection
  D34-13 (CODE) - D34-36 (AGND)
  Tool Setting
  2 V/DIV., 20 ms./DIV.
  Condition
  Engine switch off, and smart key brought near the engine switch and engine switch pushed*.
  HINT:
  *: Remove the key battery before performing this inspection.
3. Waveform 3
  Tester Connection
  D34-28 (VC5) - D34-36 (AGND)
  Tool Setting
  2 V/DIV., 200 ms./DIV.
  Condition
  Engine switch off, key not in cabin, and 30 seconds or less after engine switch pushed.

CHECK ID CODE BOX

Disconnect the D30 ID code box connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
D30-1 (+B) - D30-8 (GND)	P - W-B1 LG - W-B2	+B power supply	Always	11 to 14 V
D30-8 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

*1: for LHD
*2: for RHD

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

Reconnect the D30 ID code box (immobiliser code ECU) connector.

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

Terminal No. (Symbol)
Wiring Color
Terminal Description
Condition
Specified Condition
D30-5 (EFII) - D30-8 (GND)
GR - W-B*1
LG - W-B*2
ECM input signal
3 seconds or less after initial combustion, or 3 seconds or less after engine switch turned on for the first time after battery reconnected.
11 to 14 V → Pulse generation
(See waveform 1)
D30-5 (EFII) - D30-8 (GND)
GR - W-B*1
LG - W-B*2
ECM input signal
D30-6 (EFIO) - D30-8 (GND)
G - W-B*1
LG - W-B*2
ECM output signal
Engine switch off → ON(IG)
11 to 14 V → Pulse generation
(See waveform 2)
D30-6 (EFIO) - D30-8 (GND)
G - W-B*1
LG - W-B*2
ECM output signal

*1: for LHD
*2: for RHD

If the result is not as specified, the ID code box may have a malfunction.

Inspect using an oscilloscope.

Waveform 1
Tester Connection
D30-5 (EFII) - D30-8 (GND)
Tool Setting
2 V/DIV., 200 ms./DIV.
Condition
3 seconds or less after initial combustion, or 3 seconds or less after engine switch turned on for the first time after battery reconnected.

Waveform 2
Tester Connection
D30-6 (EFIO) - D30-8 (GND)
Tool Setting
10 V/DIV., 100 ms./DIV.
Condition
Engine switch off → on (IG)

CHECK STEERING LOCK ECU

Disconnect the D33 steering lock ECU connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
D33-1 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
D33-6 (IG2) - Body ground	L - Body ground	Ignition power supply	Engine switch off	Below 1 V
D33-6 (IG2) - Body ground	L - Body ground	Ignition power supply	Engine switch on (IG)	11 to 14 V
D33-7 (B) - Body ground	P - Body ground	+B power supply	Always	11 to 14 V

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

CHECK ECM (for 1KR-FE and 1NR-FE)

The values listed under "Specified Condition" are reference values. Because waterproof connectors are used for ECM, inspections cannot be performed with the connectors connected.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
B8-105 (E1) - Body ground	BR - Body ground	Ground	Always	Below 1 Ω
A18-10 (IMO) -B8 -105 (E1)	W-L - BR	ID code box (immobiliser code ECU) output signal	3 seconds or less after initial combustion, or 3 seconds or less after engine switch turned on for the first time after battery reconnected.	11 to 14 V → Pulse generation (See waveform 1)
A18-10 (IMO) - B8-105 (E1)	W-L - BR	ID code box (immobiliser code ECU) output signal		11 to 14 V → Pulse generation (See waveform 1)
A18-11 (IMI) - B8-105 (E1)	G-B - BR	ID code box (immobiliser code ECU) input signal	Engine switch off → on (IG)	11 to 14 V → Pulse generation (See waveform 2)
A18-11 (IMI) - B8-105 (E1)	G-B - BR	ID code box (immobiliser code ECU) input signal	Engine switch off → on (IG)	11 to 14 V → Pulse generation (See waveform 2)

Waveform:

Waveform 1
Tester Connection
A18-10 (IMO) - B8-105 (E1)
Tool Setting
2 V/DIV., 200 ms./DIV.
Condition
3 seconds or less after initial combustion, or 3 seconds or less after engine switch turned on for the first time after battery reconnected.

Waveform 2
Tester Connection
A18-11 (IMI) - B8-105 (E1)
Tool Setting
10 V/DIV., 100 ms./DIV.
Condition
Engine switch on (IG)

CHECK ECM (for 1ND-TV)

The values listed under "Specified Condition" are reference values. Because waterproof connectors are used for ECM, inspections can not be performed with the connectors connected.

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
A19-2 (E1) - Body ground	W - B Body ground	Ground	Always	Below 1 Ω
A19-78 (IMO) - A19-2 (E1)	W-L - W-B	Transponder key ECU input signal	Engine switch off → on (IG)	11 to 14 V → Pulse generation (See waveform 1)
A19-77 (IMI) - A19-2 (E1)	G-B - W-B	Transponder key ECU output signal	3 seconds or less after initial combustion, or 3 seconds or less after engine switch turned on for the first time after battery reconnected.	11 to 14 V → Pulse generation (See waveform 2)

Inspect using an oscilloscope.

Waveform 1
Tester Connection
A19-78 (IMO) -A19-2 (E1)
Tool Setting
2 V/DIV., 1 s./DIV.
Condition
3 seconds or less after initial combustion, or 3 seconds or less after engine switch turned on for the first time after battery reconnected.

Waveform 2
Tester Connection
A19-77 (IMI) -A19-2 (E1)
Tool Setting
2 V/DIV., 1 s./DIV.
Condition
Engine switch on (IG)

CHECK POWER SOURCE CONTROL ECU (for 1ND-TV)

Disconnect the D73 power source control ECU connectors.

Text in Illustration
*1
Power Source Control ECU

Text in Illustration
*1	Power Source Control ECU

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
D73-1 (AM22) - Body ground	L - Body ground	Battery power	Always	11 to 14 V
D73-2 (AM21) - Body ground	R - Body ground	Battery power	Always	11 to 14 V
D73-5 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
D73-6 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

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

CHECK POWER MANAGEMENT CONTROL ECU (for 1KR-FE and 1NR-FE)

Disconnect the D38 power management control ECU connectors.

Text in Illustration
*1
Power Management Control ECU

Text in Illustration
*1	Power Management Control ECU

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
D38-1 (AM22) - Body ground	L - Body ground	Battery power	Always	11 to 14 V
D38-2 (AM21) - Body ground	R - Body ground	Battery power	Always	11 to 14 V
D38-5 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
D38-6 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

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

Tester Connection	D27-9 (TXCT) - D27-8 (AGND)
Tool Setting	2 V/DIV., 20 ms./DIV.
Condition	Engine switch off, key not in cabin, and 30 seconds or less after engine switch pushed.

Tester Connection	D27-10 (CODE) - D27-8 (AGND)
Tool Setting	2 V/DIV., 20 ms./DIV.
Condition	Engine switch off, and smart key brought near the engine switch and engine switch pushed*.

Tester Connection	D27-14 (VC5) - D27-8 (AGND)
Tool Setting	2 V/DIV., 20 ms./DIV.
Condition	Engine switch off, key not in cabin, and 30 seconds or less after engine switch pushed.

Tester Connection	D34-12 (TXCT) - D34-36 (AGND)
Tool Setting	2 V/DIV., 20 ms./DIV.
Condition	Engine switch off, key not in cabin, and 30 seconds or less after engine switch pushed.

Item	Content
Tester Connection	D34-13 (CODE) - D34-36 (AGND)
Tool Setting	2 V/DIV., 20 ms./DIV.
Condition	Engine switch off, and smart key brought near the engine switch and engine switch pushed*.

Tester Connection	D34-28 (VC5) - D34-36 (AGND)
Tool Setting	2 V/DIV., 200 ms./DIV.
Condition	Engine switch off, key not in cabin, and 30 seconds or less after engine switch pushed.

Tester Connection	D30-5 (EFII) - D30-8 (GND)
Tool Setting	2 V/DIV., 200 ms./DIV.
Condition	3 seconds or less after initial combustion, or 3 seconds or less after engine switch turned on for the first time after battery reconnected.

Tester Connection	D30-6 (EFIO) - D30-8 (GND)
Tool Setting	10 V/DIV., 100 ms./DIV.
Condition	Engine switch off → on (IG)

Tester Connection	A19-78 (IMO) -A19-2 (E1)
Tool Setting	2 V/DIV., 1 s./DIV.
Condition	3 seconds or less after initial combustion, or 3 seconds or less after engine switch turned on for the first time after battery reconnected.

Tester Connection	A19-77 (IMI) -A19-2 (E1)
Tool Setting	2 V/DIV., 1 s./DIV.
Condition	Engine switch on (IG)