THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): B227862; Engine/Power Switch Signal Compare Failure; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ]

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM1000000028K9R
Model Year Start: 2023	Model: GR Corolla	Prod Date Range: [11/2022 - ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): B227862; Engine/Power Switch Signal Compare Failure; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ]

DTC

B227862

Engine/Power Switch Signal Compare Failure

DESCRIPTION

This DTC is stored when the SSW1 contact signal, SSW2 contact signal and SSW3 contact signal, which are detected when the engine switch is operated, do not match.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
B227862	Engine/Power Switch Signal Compare Failure	When the engine switch is operated, the SSW1 contact signal, SSW2 contact signal and SSW3 contact signal do not match.	Engine switch Certification ECU (smart key ECU assembly) Wire harness or connector	DTC Output Confirmation Operation: Turn the ignition switch to ON.

Vehicle Condition and Fail-safe Function when Malfunction Detected

Vehicle Condition when Malfunction Detected	Fail-safe Function when Malfunction Detected
If there is a malfunction in only one of the terminals SS1, SS2 or SS3, the system can still operate normally.	When only one terminal malfunctions, that terminal is disabled and the system operates normally.

Related Data List and Active Test Items

DTC No.	Data List and Active Test
B227862	Power Source Control Push Start Switch 1 Push Start Switch 2 Push Start Switch 3

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins.
Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Start Key(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.
Click here
Before replacing the certification ECU (smart key ECU assembly), refer to Registration.
Click here
After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE

1.	READ VALUE USING GTS (PUSH START SWITCH 1)

(a) Read the Data List according to the display on the GTS.

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Push Start Switch 1	Engine switch 1 status	OFF or ON	OFF: Engine switch not pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.

Body Electrical > Power Source Control > Data List

Tester Display
Push Start Switch 1

OK:

The GTS display changes correctly in response to the engine switch operation.

Result	Proceed to
The value of Push Start Switch 1 is OFF	A
The value of Push Start Switch 1 is not OFF	B

B

A

2.	READ VALUE USING GTS (PUSH START SWITCH 1)

(a) Read the Data List according to the display on the GTS.

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Push Start Switch 1	Engine switch 1 status	OFF or ON	ON: Engine switch pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.

Body Electrical > Power Source Control > Data List

Tester Display
Push Start Switch 1

OK:

The GTS display changes correctly in response to the engine switch operation.

Result	Proceed to
The value of Push Start Switch 1 is ON	A
The value of Push Start Switch 1 is not ON	B

B

A

3.	READ VALUE USING GTS (PUSH START SWITCH 2)

(a) Read the Data List according to the display on the GTS.

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Push Start Switch 2	Engine switch 2 status	OFF or ON	OFF: Engine switch not pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.

Body Electrical > Power Source Control > Data List

Tester Display
Push Start Switch 2

OK:

The GTS display changes correctly in response to the engine switch operation.

Result	Proceed to
The value of Push Start Switch 2 is OFF	A
The value of Push Start Switch 2 is not OFF	B

B

A

4.	READ VALUE USING GTS (PUSH START SWITCH 2)

(a) Read the Data List according to the display on the GTS.

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Push Start Switch 2	Engine switch 2 status	OFF or ON	ON: Engine switch pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.

Body Electrical > Power Source Control > Data List

Tester Display
Push Start Switch 2

OK:

The GTS display changes correctly in response to the engine switch operation.

Result	Proceed to
The value of Push Start Switch 2 is ON	A
The value of Push Start Switch 2 is not ON	B

B

A

5.	READ VALUE USING GTS (PUSH START SWITCH 3)

(a) Read the Data List according to the display on the GTS.

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Push Start Switch 3	Engine switch 3 status	OFF or ON	OFF: Engine switch not pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.

Body Electrical > Power Source Control > Data List

Tester Display
Push Start Switch 3

OK:

The GTS display changes correctly in response to the engine switch operation.

Result	Proceed to
The value of Push Start Switch 3 is OFF	A
The value of Push Start Switch 3 is not OFF	B

B

A

6.	READ VALUE USING GTS (PUSH START SWITCH 3)

(a) Read the Data List according to the display on the GTS.

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Push Start Switch 3	Engine switch 3 status	OFF or ON	ON: Engine switch pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.

Body Electrical > Power Source Control > Data List

Tester Display
Push Start Switch 3

OK:

The GTS display changes correctly in response to the engine switch operation.

Result	Proceed to
The value of Push Start Switch 3 is ON	A
The value of Push Start Switch 3 is not ON	B

B

A

7.	READ VALUE USING GTS (PUSH START SWITCH 1)

(a) According to the display on the GTS, read the Data List while wiggling the wire harness.

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Push Start Switch 1	Engine switch 1 status	OFF or ON	OFF: Engine switch not pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.

Body Electrical > Power Source Control > Data List

Tester Display
Push Start Switch 1

OK:

The GTS display changes correctly in response to the engine switch operation.

Result	Proceed to
The value of Push Start Switch 1 is OFF	A
The value of Push Start Switch 1 is not OFF	B

B

REPAIR OR REPLACE HARNESS OR CONNECTOR

A

8.	READ VALUE USING GTS (PUSH START SWITCH 1)

(a) According to the display on the GTS, read the Data List while wiggling the wire harness.

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Push Start Switch 1	Engine switch 1 status	OFF or ON	ON: Engine switch pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.

Body Electrical > Power Source Control > Data List

Tester Display
Push Start Switch 1

OK:

The GTS display changes correctly in response to the engine switch operation.

Result	Proceed to
The value of Push Start Switch 1 is ON	A
The value of Push Start Switch 1 is not ON	B

B

REPAIR OR REPLACE HARNESS OR CONNECTOR

A

9.	READ VALUE USING GTS (PUSH START SWITCH 2)

(a) According to the display on the GTS, read the Data List while wiggling the wire harness.

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Push Start Switch 2	Engine switch 2 status	OFF or ON	OFF: Engine switch not pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.

Body Electrical > Power Source Control > Data List

Tester Display
Push Start Switch 2

OK:

The GTS display changes correctly in response to the engine switch operation.

Result	Proceed to
The value of Push Start Switch 2 is OFF	A
The value of Push Start Switch 2 is not OFF	B

B

REPAIR OR REPLACE HARNESS OR CONNECTOR

A

10.	READ VALUE USING GTS (PUSH START SWITCH 2)

(a) According to the display on the GTS, read the Data List while wiggling the wire harness.

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Push Start Switch 2	Engine switch 2 status	OFF or ON	ON: Engine switch pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.

Body Electrical > Power Source Control > Data List

Tester Display
Push Start Switch 2

OK:

The GTS display changes correctly in response to the engine switch operation.

Result	Proceed to
The value of Push Start Switch 2 is ON	A
The value of Push Start Switch 2 is not ON	B

B

REPAIR OR REPLACE HARNESS OR CONNECTOR

A

11.	READ VALUE USING GTS (PUSH START SWITCH 3)

(a) According to the display on the GTS, read the Data List while wiggling the wire harness.

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Push Start Switch 3	Engine switch 3 status	OFF or ON	OFF: Engine switch not pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.

Body Electrical > Power Source Control > Data List

Tester Display
Push Start Switch 3

OK:

The GTS display changes correctly in response to the engine switch operation.

Result	Proceed to
The value of Push Start Switch 3 is OFF	A
The value of Push Start Switch 3 is not OFF	B

B

REPAIR OR REPLACE HARNESS OR CONNECTOR

A

12.	READ VALUE USING GTS (PUSH START SWITCH 3)

(a) According to the display on the GTS, read the Data List while wiggling the wire harness.

Body Electrical > Power Source Control > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Push Start Switch 3	Engine switch 3 status	OFF or ON	ON: Engine switch pressed	If the engine switch is pressed for a short time, the display may not change. Use this item to determine if the engine switch input signal is malfunctioning.

Body Electrical > Power Source Control > Data List

Tester Display
Push Start Switch 3

OK:

The GTS display changes correctly in response to the engine switch operation.

Result	Proceed to
The value of Push Start Switch 3 is ON	A
The value of Push Start Switch 3 is not ON	B

A

USE SIMULATION METHOD TO CHECK

B

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ENGINE SWITCH)

Pre-procedure1

(a) Disconnect the I167 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the I35 engine switch connector.

Procedure1

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
I167-19 (SSW1) - I35-12 (SS1)	Always	Below 1 Ω
I167-27 (SSW2) - I35-6 (SS2)	Always	Below 1 Ω
I167-23 (SSW3) - I35-11 (SS3)	Always	Below 1 Ω
I167-30 (AGND) - I35-3 (GND)	Always	Below 1 Ω
I167-19 (SSW1) or I35-12 (SS1) - Other terminals and body ground	Always	10 kΩ or higher
I167-27 (SSW2) or I35-6 (SS2) - Other terminals and body ground	Always	10 kΩ or higher
I167-23 (SSW3) or I35-11 (SS3) - Other terminals and body ground	Always	10 kΩ or higher
I167-30 (AGND) or I35-3 (GND) - Other terminals and body ground	Always	10 kΩ or higher

Post-procedure1

(d) None

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

14.	INSPECT ENGINE SWITCH

for M20A-FKS: Click here

for G16E-GTS: Click here

OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPLACE ENGINE SWITCH

for M20A-FKS: Click here

for G16E-GTS: Click here