Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM10000000295B1
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): TERMINALS OF ECU; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]

TERMINALS OF ECU

CHECK TRANSPONDER KEY ECU ASSEMBLY

(a) Disconnect the I67 transponder key ECU assembly connector.

(b) 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)

Terminal Description

Condition

Specified Condition

Related Data List Item / DTC

I67-4 (+B) - I67-12 (GND)

Auxiliary battery

Ignition switch off*1

Always*2

11 to 14 V

+B

I67-5 (KSW) - I67-12 (GND)

Unlock warning switch signal

No door control transmitter assembly in ignition key cylinder

10 kΩ or higher

  • B2780
  • Key SW

Door control transmitter assembly in ignition key cylinder

Below 1 Ω

I67-12 (GND) - Body ground

Ground

Always

Below 1 Ω

-

  • *1: for HV Model
  • *2: for Gasoline Model

(c) Reconnect the I67 transponder key ECU assembly connector.

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

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

Related Data List Item / DTC

I67-6 (IG) - I67-12 (GND)

Ignition switch signal

Ignition switch off

Below 1 V

IG SW

Ignition switch ON

11 to 14 V

I67-8 (IND) - I67-12 (GND)

Security indicator light signal

No door control transmitter assembly in ignition key cylinder, or 20 sec. elapsed after turning ignition switch to ACC or off (immobiliser system set)

Pulse generation

Immobiliser

Door control transmitter assembly in ignition key cylinder (immobiliser system unset)

Below 1 V

I67-9 (D) - I67-12 (GND)

DLC3 communication

Without communication

Below 1 V

-

During communication

Pulse generation

I67-2 (ANT1) - I67-12 (GND)

Transponder key amplifier power source

No door control transmitter assembly in ignition key cylinder

Below 1 V

-

Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder

Pulse generation

(See waveform 1)

I67-3 (ANT2) - I67-12 (GND)

Transponder key amplifier communication signal

No door control transmitter assembly in ignition key cylinder

Below 1 V

-

Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder

Pulse generation

(See waveform 2)

I67-10 (EFII) - I67-12 (GND)

Hybrid vehicle control ECU*1 or ECM*2 input signal

Ignition switch off

11 to 14 V

-

Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal

Pulse generation

(See waveform 3)

I67-11 (EFIO) - I67-12 (GND)

Hybrid vehicle control ECU*1 or ECM*2 output signal

Ignition switch off

Below 1 V

-

Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal

Pulse generation

(See waveform 4)

  • *1: for HV Model
  • *2: for Gasoline Model

(e) Using an oscilloscope, check the waveform.

(1) Waveform 1 (Reference)

Tester Connection

I67-2 (ANT1) - I67-12 (GND)

Tool Setting

20 V/DIV., 2 s./DIV.

Condition

Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder

(2) Waveform 2 (Reference)

Tester Connection

I67-3 (ANT2) - I67-12 (GND)

Tool Setting

20 V/DIV., 2 s./DIV.

Condition

Within 3 seconds of inserting door control transmitter assembly into ignition key cylinder

(3) Waveform 3 (Reference)

*a

Approximately 160 ms.

*b

Approximately 270 ms.

Tester Connection

I67-10 (EFII) - I67-12 (GND)

Tool Setting

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

Condition

Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal

(4) Waveform 4 (Reference)

*a

Approximately 160 ms.

*b

Approximately 270 ms.

Tester Connection

I67-11 (EFIO) - I67-12 (GND)

Tool Setting

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

Condition

Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal

CHECK HYBRID VEHICLE CONTROL ECU (2ZR-FXE)

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

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

Related Data List Item / DTC

I3-39 (IMO) - I3-1 (E1)

Transponder key ECU assembly communication output

Ignition switch off

11 to 14 V

-

Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal

Pulse generation

(See waveform 1)

-

I3-53 (IMI) - I3-1 (E1)

Transponder key ECU assembly communication input

Ignition switch off

Below 1 V

-

Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal

Pulse generation

(See waveform 2)

-

(b) Using an oscilloscope, check the waveform.

(1) Waveform 1 (Reference)

*a

Approximately 160 ms.

*b

Approximately 270 ms.

Tester Connection

I3-39 (IMO) - I3-1 (E1)

Tool Setting

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

Condition

Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal

(2) Waveform 2 (Reference)

*a

Approximately 160 ms.

*b

Approximately 270 ms.

Tester Connection

I3-53 (IMI) - I3-1 (E1)

Tool Setting

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

Condition

Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal

CHECK ECM (for M20A-FKS)

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

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

Related Data List Item / DTC

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

Transponder key ECU assembly communication output

Ignition switch off

11 to 14 V

-

Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal

Pulse generation

(See waveform 1)

-

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

Transponder key ECU assembly communication input

Ignition switch off

Below 1 V

-

Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal

Pulse generation

(See waveform 2)

-

(b) Using an oscilloscope, check the waveform.

(1) Waveform 1 (Reference)

*a

Approximately 160 ms.

*b

Approximately 270 ms.

Tester Connection

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

Tool Setting

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

Condition

Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal

(2) Waveform 2 (Reference)

*a

Approximately 160 ms.

*b

Approximately 270 ms.

Tester Connection

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

Tool Setting

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

Condition

Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) auxiliary battery terminal