Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Engine/Power Switch Signal Compare Failure (B227862)

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Smart Key System (for Start Function, Gasoline Model) / Engine/Power Switch Signal Compare Failure (B227862)

DESCRIPTION

This DTC is stored when the SSW1 contact signal, SSW2 contact signal and SSW3 contact signal, which are detected when the ignition 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 the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. 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, PUSH START SWITCH 2, 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 1

Engine switch 1 status

OFF or ON

OFF: Engine switch not pressed

ON: 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.

Push Start Switch 2

Engine switch 2 status

OFF or ON

OFF: Engine switch not pressed

ON: 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.

Push Start Switch 3

Engine switch 3 status

OFF or ON

OFF: Engine switch not pressed

ON: 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

Push Start Switch 2

Push Start Switch 3

OK:

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

NG

GO TO STEP 3

OK

2.

READ VALUE USING GTS (PUSH START SWITCH 1, PUSH START SWITCH 2, 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 1

Engine switch 1 status

OFF or ON

OFF: Engine switch not pressed

ON: 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.

Push Start Switch 2

Engine switch 2 status

OFF or ON

OFF: Engine switch not pressed

ON: 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.

Push Start Switch 3

Engine switch 3 status

OFF or ON

OFF: Engine switch not pressed

ON: 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

Push Start Switch 2

Push Start Switch 3

OK:

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

OK

USE SIMULATION METHOD TO CHECK

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.

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

(a) Disconnect the I222 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the I35 engine switch connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I222-19 (SSW1) - I35-12 (SS1)

Always

Below 1 Ω

I222-27 (SSW2) - I35-6 (SS2)

Always

Below 1 Ω

I222-23 (SSW3) - I35-11 (SS3)

Always

Below 1 Ω

I222-30 (AGND) - I35-3 (GND)

Always

Below 1 Ω

I222-19 (SSW1) or I35-12 (SS1) - Other terminals and body ground

Always

10 kΩ or higher

I222-27 (SSW2) or I35-6 (SS2) - Other terminals and body ground

Always

10 kΩ or higher

I222-23 (SSW3) or I35-11 (SS3) - Other terminals and body ground

Always

10 kΩ or higher

I222-30 (AGND) or I35-3 (GND) - Other terminals and body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

4.

INSPECT ENGINE SWITCH

Click here

OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPLACE ENGINE SWITCH

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