Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001X83X
Model Year Start: 2022 Model: GR Corolla Prod Date Range: [06/2021 - 09/2022]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): TERMINALS OF ECU; 2022 MY Corolla Corolla Hatchback GR Corolla [06/2021 - 09/2022]

TERMINALS OF ECU

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Disconnect the O61, O62 and I1 certification ECU (smart key ECU assembly) connectors.

(b) 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.

Tester Connection

Wiring Color

Input / Output

Terminal Description

Condition

Specified Condition

Related Data List Item/DTC

O62-21 (NE) - Body ground

L - Body ground

Input

Engine speed signal

Always

10 kΩ or higher

Engine Condition

O61-24 (STP1) - Body ground*1

BR - Body ground

Input

Stop light switch signal

Brake pedal depressed → Brake pedal released

9 V or higher → 1 V or less

Stop Light Switch1

I1-3 (+B) - I1-18 (E)

GR - W-B

Input

Power source

Always

11 to 14 V

-

I1-22 (P) - I1-18 (E)*1

P - W-B

Input

P position signal

Shift lever in P → Shift lever not in P

30 kΩ or higher → Below 200 Ω

Shift P Signal

I1-17 (CUTB) - Body ground

SB - W-B*3

BR - W-B*4

Input

Dark current cut pin*2

Always

11 to 14 V

-

I1-18 (E) - Body ground

W-B - Body ground

-

GND

Always

Below 1 Ω

-

I1-13 (SSW3) - Body ground

P - Body ground

Input

SSW3 contact signal

Engine switch pushed → Engine switch not pushed

Below 15 Ω → 10 kΩ or higher

Start Switch3

I1-20 (SSW2) - Body ground

L - Body ground

Input

SSW2 contact signal

Engine switch pushed → Engine switch not pushed

Below 15 Ω → 10 kΩ or higher

Start Switch2

I1-23 (SSW1) - Body ground

V - Body ground

Input

SSW1 contact signal

Engine switch pushed → Engine switch not pushed

Below 15 Ω → 10 kΩ or higher

Start Switch1

I1-7 (SPD) - Body ground

BR - Body ground

Input

Vehicle speed signal

Always

30 kΩ or higher

Vehicle Speed Signal

  • *1: except Manual Transaxle
  • *2: In order to prevent the vehicle battery from being depleted when the vehicle is shipped long distances, a fuse that cuts unnecessary electrical load while the vehicle is being shipped is installed in the circuit. If the fuse is removed, the circuit becomes open. If the fuse that is between the vehicle battery and terminal CUTB is removed and the circuit is open, the certification ECU (smart key ECU assembly) changes to a certain control mode (example: the transmission of radio waves every 0.25 seconds, which form the detection area, stops).
  • *3: for Sedan
  • *4: except Sedan

(c) Connect the O61, O62 and I1 certification ECU (smart key ECU assembly) connectors.

(d) Measure the voltage and resistance, and check for pulses according to the value(s) in the table below.

Tester Connection

Wiring Color

Input / Output

Terminal Description

Condition

Specified Condition

Related Data List Item/DTC

O62-1 (STA) - I1-18 (E)

LG - W-B

Input

When starting the engine, this monitors the voltage sent from terminal STAR to the starter relay to judge whether the engine is "being started".

for Manual Transaxle

  • Engine switch pressed and held with clutch pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off)

except Manual Transaxle

  • Engine switch pressed and held with brake pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off)

6 V or higher*3 → 1.0 V or less

-

O62-2 (STAR) - I1-18 (E)

W - W-B

Input / Output

Outputs voltage to the starter relay

  • Outputs voltage (12 V) to the starter relay when starting the engine. (Max. 30 sec. Turns off when an engine speed of 1000 rpm.)

HINT:

When Hi is selected, a start request signal (STAR) will not be output even though a start request signal (STSW) is input.

for Manual Transaxle

  • Engine switch pressed and held with clutch pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off)

except Manual Transaxle

  • Engine switch pressed and held with brake pedal depressed (starter on) → Approximately 1 second after engine switch released (starter off)

6 V or higher*3 → 1.0 V or less

-

O62-2 (STAR) - I1-18 (E)

W - W-B

Input / Output

for Manual Transaxle

  • Receives clutch start switch signal
    • Monitors whether the clutch start switch is on (clutch pedal depressed) or off(clutch pedal released). Applies voltage via a resistor (large) in the certification ECU (smart key ECU assembly). When the clutch start switch is on, due to the starter relay coil resistance (small) using some of the voltage, the voltage at terminal STAR will be low (2.7 V or less), and when the clutch start switch is off, the voltage will be high (9 V or more).

except Manual Transaxle

  • Receives neutral start switch (P, N position detection) signal
    • Monitors whether the neutral start switch is on (P or N) or off (other than P or N). Applies voltage via a resistor (large) in the certification ECU (smart key ECU assembly). When the neutral start switch is on, due to the starter relay coil resistance (small) using some of the voltage, the voltage at terminal STAR will be low (2.7 V or less), and when the neutral start switch is off, the voltage will be high (9 V or more).

for Manual Transaxle

  • Perform the following operations except while the engine is cranking:

    Clutch pedal released → Clutch pedal depressed

except Manual Transaxle

  • Perform the following operations except while the engine is cranking:

    Shift lever in any position other than P or N → Shift lever in P or N (at 20°C (68°F))

9 V or higher → 2.7 V or less

Neutral SW/ Clutch SW

O62-21 (NE) - I1-18 (E)

L - W-B

Input

Engine speed signal

Idling (engine warmed up)

Pulse generation

(See waveform 1)

Engine Condition

O61-24 (STP1) - I1-18 (E)*1

BR - W-B

Input

Stop light switch signal

Brake pedal released → Brake pedal depressed

1 V or less → 9 V or higher

Stop Light Switch1

I1-12 (SLP) - I1-18 (E)

G - W-B

Input

Steering lock position signal

Steering locked → Steering unlocked

11 to 14 V → 1.5 V or less

Steering Unlock Switch

I1-25 (SLR+) - I1-18 (E)

P - W-B

Output

Steering lock motor operation command signal

(Steering lock motor operation permission signal sent from the certification ECU (smart key ECU assembly))

for Manual Transaxle

  • When a door is opened, the steering lock motor will be operated if all of the following conditions are met:
    • The steering is unlocked.
    • The engine switch is off.

except Manual Transaxle

  • When a door is opened, the steering lock motor will be operated if all of the following conditions are met:
    • The steering is unlocked.
    • The engine switch is off.
    • The shift lever is in P.

11 to 14 V → Below 1 V

-

I1-14 (LIN) - I1-18 (E)

V - W-B

Input / Output

LIN communication line

Engine switch on (IG)

Pulse generation

Steering Lock Start Cond

I1-22 (P) - I1-18 (E)*1

P - W-B

Input

P position signal

Shift lever in P → Shift lever not in P

9 V or higher → 2.76 V or less

Shift P Signal

I1-13 (SSW3) - I1-18 (E)

P - W-B

Input

SSW3 contact signal

Engine switch not pushed → Engine switch pushed

9 V or higher → 1 V or less

Start Switch3

I1-20 (SSW2) - I1-18 (E)

L - W-B

Input

SSW2 contact signal

Engine switch not pushed → Engine switch pushed

9 V or higher → 1 V or less

Start Switch2

I1-23 (SSW1) - I1-18 (E)

V - W-B

Input

SSW1 contact signal

Engine switch not pushed → Engine switch pushed

9 V or higher → 1 V or less

Start Switch1

I1-16 (ACCD) - I1-18 (E)

L - W-B

Output

ACC signal

Engine switch off → Engine switch on (ACC)

1 V or less → 8.5 V or higher

ACC Relay Monitor

I1-15 (IG1D) - I1-18 (E)

R - W-B

Output

IG signal

Engine switch on (ACC) → Engine switch on (IG)

1 V or less → 9 V or higher

IG Relay Monitor (Outside)

I1-7 (SPD) - I1-18 (E)

BR - W-B

Input

Vehicle speed signal

Vehicle being driven at approx. 5 km/h (3 mph)

Pulse generation

(See waveform 2)

Vehicle Speed Signal

I1-8 (CLG5) - I1-18 (E)

G - W-B

Output

Output to No. 1 indoor electrical key antenna assembly (front floor)

Procedure:

  1. Engine switch off
  2. Electrical key transmitter sub-assembly not inside vehicle
  3. Within 30 seconds of closing any door

Pulse generation

(See waveform 3)

-

I1-9 (CG5B) - I1-18 (E)

R - W-B

Output

Output to No. 1 indoor electrical key antenna assembly (front floor) (terminal on opposite side of component from CLG5 output terminal)

Procedure:

  1. Engine switch off
  2. Electrical key transmitter sub-assembly not inside vehicle
  3. Within 30 seconds of closing any door

Pulse generation

(See waveform 3)

-

O61-10 (CLG7) - I1-18 (E)*2

G - W-B

Output

Output to No. 3 indoor electrical key antenna assembly (inside luggage compartment)

Procedure:

for Hatchback

  1. Engine switch off
  2. Electrical key transmitter sub-assembly not inside vehicle
  3. Within 30 seconds of closing any door

Pulse generation

(See waveform 3)

-

Procedure:

for Sedan

  1. Door is closed
  2. Engine switch off
  3. Electrical key transmitter sub-assembly not inside vehicle
  4. Driver door lock sensor touched

Pulse generation

(See waveform 4)

-

O61-9 (CG7B) - I1-18 (E)*2

W - W-B

Output

Output to No. 3 indoor electrical key antenna assembly (inside luggage compartment) (terminal on opposite side of component from CLG7 output terminal)

Procedure:

for Hatchback

  1. Engine switch off
  2. Electrical key transmitter sub-assembly not inside vehicle
  3. Within 30 seconds of closing any door

Pulse generation

(See waveform 3)

-

Procedure:

for Sedan

  1. Door is closed
  2. Engine switch off
  3. Electrical key transmitter sub-assembly not inside vehicle
  4. Driver door lock sensor touched

Pulse generation

(See waveform 4)

-

I1-11 (AGND) - Body ground

W - Body ground

-

Transponder key amplifier ground

Always

Below 1 Ω

  • BCC Malfunction
  • Abnormal Status
  • Different Encrypt Code
  • Different Serial Number
  • Frame Error
  • Response

I1-5 (ANT1) - I1-11 (AGND)

B - W

Input / Output

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, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

Pulse generation

(See waveform 5)

  • BCC Malfunction
  • Abnormal Status
  • Different Encrypt Code
  • Different Serial Number
  • Frame Error
  • Response

I1-6 (ANT2) - I1-11 (AGND)

G - W

Input / Output

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, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

Pulse generation

(See waveform 6)

I1-19 (IND) - I1-18 (E)

R - W-B

Output

Security indicator output

Engine switch off → on (IG)

Pulse generation → Below 2 V

-

  • *1: except Manual Transaxle
  • *2: for Hatchback

HINT:

  • *3: While the engine is cranking, the battery voltage may drop to approximately 6 V.
  • The waveform of the steering lock actuator motor stopped can be checked without performing any particular operation.
  • The waveform of the steering lock actuator motor operating can be checked if either of the following operations is performed:

    for Manual Transaxle

    • To unlock the steering, bring the electrical key transmitter sub-assembly into the cabin and turn the engine switch on (ACC) or on (IG).
    • To lock the steering, open a door with the engine switch off.

    except Manual Transaxle

    • To unlock the steering, bring the electrical key transmitter sub-assembly into the cabin and turn the engine switch on (ACC) or on (IG).
    • To lock the steering, open a door with the engine switch off and the shift lever in P.

(e) Using an oscilloscope, check the waveform of the ECU.

NOTICE:

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

(1) Waveform 1

Measurement Condition

Item

Content

Tester Connection

O62-21 (NE) - I1-18 (E)

Tool Setting

2 V/DIV., 2 ms./DIV.

Condition

Idling (engine warmed up)

HINT:

The wavelength becomes shorter as the engine speed increases.

(2) Waveform 2

Measurement Condition

Item

Content

Tester Connection

I1-7 (SPD) - I1-18 (E)

Tool Setting

5 V/DIV., 20 ms./DIV.

Condition

Vehicle being driven at approx. 5 km/h (3 mph)

HINT:

The wavelength becomes shorter as the vehicle speed increases.

(3) Waveform 3

*a

For 30 seconds after any door closed

*b

After 30 seconds or more have elapsed since any door closed

Measurement Condition

Item

Content

Tester Connection

I1-8 (CLG5) - I1-18 (E)

I1-9 (CG5B) - I1-18 (E)

O61-10 (CLG7) - I1-18 (E)*

O61-9 (CG7B) - I1-18 (E)*

Tool Setting

2 V/DIV., 500 ms/DIV.

Condition

Procedure:

  1. Engine switch off
  2. Electrical key transmitter sub-assembly not inside vehicle
  3. Within 30 seconds of closing any door
  • *: for Hatchback

(4) Waveform 4

NOTICE:

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

*a

Driver door lock sensor not touched

*b

Driver door lock sensor touched

Measurement Condition

Item

Content

Tester Connection

O61-10 (CLG7) - I1-18 (E)

O61-9 (CG7B) - I1-18 (E)

Tool Setting

2 V/DIV., 500 ms/DIV.

Condition

Procedure:

  1. Door is closed
  2. Engine switch off
  3. Electrical key transmitter sub-assembly not inside vehicle
  4. Driver door lock sensor touched

(5) Waveform 5

Measurement Condition

Item

Content

Tester Connection

I1-5 (ANT1) - I1-11 (AGND)

Tool Setting

20 V/DIV., 200 ms./DIV.

Condition

Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

(6) Waveform 6

Measurement Condition

Item

Content

Tester Connection

I1-6 (ANT2) - I1-11 (AGND)

Tool Setting

20 V/DIV., 200 ms./DIV.

Condition

Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)

(a) Disconnect the I59 steering lock ECU (steering lock actuator or upper bracket assembly) connector.

(b) 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

Input / Output

Terminal Description

Condition

Specified Condition

Related Data List Item/DTC

I59-1 (GND) - Body ground

W-B - Body ground

-

Ground

Always

Below 1 Ω

-

I59-6 (IG2) - I59-1 (GND)

B - W-B

Input

IG signal (IG2 power supply input for steering lock motor)

Engine switch off

Below 1 V

-

Engine switch on (IG)

11 to 14 V

I59-7 (B) - Body ground

L - Body ground

Input

Constant power supply

Always

11 to 14 V

-

(c) Connect the I59 steering lock ECU (steering lock actuator or upper bracket assembly) connector.

(d) Measure the voltage, and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Input / Output

Terminal Description

Condition

Specified Condition

Related Data List Item/DTC

I59-3 (IGE) - I59-1 (GND)

P - W-B

Input

Steering lock motor operation permission signal (motor operation permission signal supplied by certification ECU (smart key ECU assembly))

for Manual Transaxle

  • Steering lock motor operating when all conditions met, and then door opened:
    • The steering is unlocked.
    • The engine switch is off.

except Manual Transaxle

  • Steering lock motor operating when all conditions met, and then door opened:
    • The steering is unlocked.
    • The engine switch is off.
    • The shift lever is in P.

11 to 14 V → Below 1 V

  • Power Supply Short
  • Unlock Request Receive
  • Lock Request Receive

I59-4 (SLP1) - I59-1 (GND)

SB - W-B

Output

Steering lock bar position signal (signal output from steering unlock sensor)

Steering locked → unlocked

11 to 14 V → Below 1.5 V

Sensor Value

I59-5 (LIN) - I59-1 (GND)

G - W-B

Input / Output

LIN communication line

Engine switch on (IG)

Pulse generation

Steering Lock Start Cond

HINT:

  • There is 1 motor and 2 sensors built into the steering lock actuator or upper bracket assembly.
  • When taking measurements when the lock motor is stopped, it is not necessary to perform any operations.
  • In order to take measurements when the lock motor is operating, perform either of the following operations:

    for Manual Transaxle

    • To unlock the steering, carry the key and turn the engine switch on (ACC) or on (IG).
    • To lock the steering, turn the engine switch off, and then open a door.

    except Manual Transaxle

    • To unlock the steering, carry the key and turn the engine switch on (ACC) or on (IG).
    • To lock the steering, turn the engine switch off with the shift lever in P, and then open a door.

CHECK ID CODE BOX (IMMOBILISER CODE ECU)

(a) Disconnect the I20 ID code box (immobiliser code ECU) connector.

(b) 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.

Tester Connection

Wiring Color

Input/Output

Terminal Description

Condition

Specified Condition

Related Data List Item

I20-1 (+B) - Body ground

L - Body ground

Input

Power source

Always

11 to 14 V

-

I20-5 (GND) - Body ground

W-B - Body ground

-

Ground

Always

Below 1 Ω

(c) Reconnect the I20 ID code box (immobiliser code ECU) connector.

(d) Measure the voltage and check for pulses according to the value(s) in the table below.

Tester Connection

Wiring Color

Input/Output

Terminal Description

Condition

Specified Condition

Related Data List Item

I20-3 (EFII) - I20-5 (GND)

B - W-B

Input

EFI communication input

(Signal input from ECM to ID code box (immobiliser code ECU))

Engine switch off

11 to 14 V

Smart Key

  • EFI Code Receive
  • Engine Start Request

I20-3 (EFII) - I20-5 (GND)

B - W-B

Input

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 cable disconnected and reconnected to battery

Pulse generation

(See waveform 1)

I20-4 (EFIO) - I20-5 (GND)

R - W-B

Output

EFI communication output

(Signal output from ID code box (immobiliser code ECU) to ECM)

Engine switch off

Below 1 V

I20-4 (EFIO) - I20-5 (GND)

R - W-B

Output

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 cable disconnected and reconnected to battery

Pulse generation

(See waveform 2)

I20-2 (LIN1) - I20-5 (GND)

P - W-B

Input/Output

LIN communication line

Engine switch on (IG)

Pulse generation

Smart Key

  • Steering Lock Start Cond

(e) 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.

(1) Waveform 1

*a

Approximately 160 ms

*b

Approximately 270 ms

Item

Content

Tester Connection

I20-3 (EFII) - I20-5 (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 cable disconnected and reconnected to battery

(2) Waveform 2

*a

Approximately 160 ms

*b

Approximately 270 ms

Item

Content

Tester Connection

I20-4 (EFIO) - I20-5 (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 cable disconnected and reconnected to battery

CHECK ECM (for M20A-FKS)

(a) Measure the voltage and resistance, and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Input / Output

Terminal Description

Condition

Specified Condition

Related Data List Item/DTC

A47-35 (+B2) - A47-10 (E1)

LG - W-B

Input

Ignition power supply

Engine switch on (IG)

11 to 14 V

-

A47-9 (+B) - A47-10 (E1)

BE - W-B

Input

Ignition power supply

Engine switch on (IG)

11 to 14 V

-

A47-15 (MREL) - A47-10 (E1)

G - W-B

Input

Ignition power supply

Engine switch on (IG)

11 to 14 V

-

A47-1 (BATT) - A47-10 (E1)

G - W-B

Input

+B power supply

Always

11 to 14 V

-

A47-10 (E1) - Body ground

W-B - Body ground

-

Ground

Always

Below 1 Ω

-

A47-36 (E2) - Body ground

W-B - Body ground

-

Ground

Always

Below 1 Ω

-

A47-25 (IMO) - A47-10 (E1)

B - W-B

Output

EFI communication input

(Signal input from ECM to ID code box (immobiliser code ECU))

Engine switch off

11 to 14 V

-

A47-25 (IMO) - A47-10 (E1)

B - W-B

Output

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 cable disconnected and reconnected to battery

Pulse generation

(See waveform 1)

-

A47-26 (IMI) - A47-10 (E1)

W - W-B

Input

EFI communication input

(Signal output from ID code box (immobiliser code ECU) to ECM)

Engine switch off

11 to 14 V → 1 V or less

-

A47-26 (IMI) - A47-10 (E1)

W - W-B

Input

EFI communication input

(Signal output from ID code box (immobiliser code ECU) to ECM)

Engine switch turned on (IG) using registered electrical key transmitter sub-assembly

Pulse generation

(See waveform 2)

-

(b) 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.

(1) Waveform 1 (Reference)

*a

Approximately 160 ms.

*b

Approximately 270 ms.

Measurement Condition

Item

Content

Tester Connection

A47-25 (IMO) - A47-10 (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 cable disconnected and reconnected to battery

(2) Waveform 2 (Reference)

*a

Approximately 160 ms.

*b

Approximately 270 ms.

Measurement Condition

Item

Content

Tester Connection

A47-26 (IMI) - A47-10 (E1)

Tool Setting

2 V/DIV., 500 ms./DIV.

Condition

Engine switch turned on (IG) using registered electrical key transmitter sub-assembly

CHECK ECM (for 2ZR-FAE)

(a) Measure the voltage and resistance, and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Input / Output

Terminal Description

Condition

Specified Condition

Related Data List Item/DTC

A46-3 (+B2) - C77-59 (E1)

B - W-B

Input

Ignition power supply

Engine switch on (IG)

11 to 14 V

-

A46-2 (+B) - C77-59 (E1)

L - W-B

Input

Ignition power supply

Engine switch on (IG)

11 to 14 V

-

A46-46 (MREL) - C77-59 (E1)

G - W-B

Input

Ignition power supply

Engine switch on (IG)

11 to 14 V

-

A46-1 (BATT) - C77-59 (E1)

P - W-B

Input

+B power supply

Always

11 to 14 V

-

C77-59 (E1) - Body ground

W-B - Body ground

-

Ground

Always

Below 1 Ω

-

A46-45 (IMO) - C77-59 (E1)

B - W-B

Output

EFI communication input

(Signal input from ECM to ID code box (immobiliser code ECU))

Engine switch off

11 to 14 V

-

A46-45 (IMO) - C77-59 (E1)

B - W-B

Output

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 cable disconnected and reconnected to battery

Pulse generation

(See waveform 1)

-

A46-28 (IMI) - C77-59 (E1)

W - W-B

Input

EFI communication input

(Signal output from ID code box (immobiliser code ECU) to ECM)

Engine switch off

11 to 14 V → 1 V or less

-

A46-28 (IMI) - C77-59 (E1)

W - W-B

Input

EFI communication input

(Signal output from ID code box (immobiliser code ECU) to ECM)

Engine switch turned on (IG) using registered electrical key transmitter sub-assembly

Pulse generation

(See waveform 2)

-

(b) 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.

(1) Waveform 1 (Reference)

*a

Approximately 160 ms.

*b

Approximately 270 ms.

Measurement Condition

Item

Content

Tester Connection

A46-45 (IMO) - C77-59 (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 cable disconnected and reconnected to battery

(2) Waveform 2 (Reference)

*a

Approximately 160 ms.

*b

Approximately 270 ms.

Measurement Condition

Item

Content

Tester Connection

A46-28 (IMI) - C77-59 (E1)

Tool Setting

2 V/DIV., 500 ms./DIV.

Condition

Engine switch turned on (IG) using registered electrical key transmitter sub-assembly

CHECK ENGINE SWITCH

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

Terminal No. (Symbol)

Wiring Color

Input / Output

Terminal Description

Condition

Specified Condition

Related Data List Item/DTC

I35-3 (GND) - Body ground

W - Body ground

-

Transponder key amplifier ground

Always

Below 1 Ω

-

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

Terminal No. (Symbol)

Wiring Color

Input / Output

Terminal Description

Condition

Specified Condition

Related Data List Item/DTC

I35-1 (ANT1) - I35-3 (GND)

B - W

Input / Output

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, electrical key transmitter sub-assembly not in cabin, within 30 seconds of 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 verification communication is not performed correctly, the malfunction may be indicated by one or more of the Data List items listed above

I35-7 (ANT2) - I35-3 (GND)

G - W

Input / Output

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, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

Pulse generation

(See waveform 2)

(c) 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.

(1) Waveform 1 (Reference)

Measurement Condition

Item

Content

Tester Connection

I35-1 (ANT1) - I35-3 (GND)

Tool Setting

20 V/DIV., 200 ms./DIV.

Condition

Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed

(2) Waveform 2 (Reference)

Measurement Condition

Item

Content

Tester Connection

I35-7 (ANT2) - I35-3 (GND)

Tool Setting

20 V/DIV., 200 ms./DIV.

Condition

Engine switch off, electrical key transmitter sub-assembly not in cabin, within 30 seconds of engine switch pressed