Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026XCA |
Model Year Start: 2023 |
Model: Corolla |
Prod Date Range: [09/2022 -
] |
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): B228231,B228262; Vehicle Speed Signal Circuit Open; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] |
DTC
|
B228231
|
Vehicle Speed Signal Circuit Open
|
DTC
|
B228262
|
Vehicle Speed Signal Compare Failure
|
DESCRIPTION
DTC B228231 is stored when the vehicle speed signal sent by the skid control ECU via direct line and the vehicle speed signal sent via CAN communication do not match.
DTC B228262 is stored when a malfunction in the vehicle speed sensor is detected.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
Note
|
B228231
|
Vehicle Speed Signal Circuit Open
|
Vehicle speed signal malfunction is detected (excessive deceleration is detected). (1-trip detection logic*)
|
-
Electronically controlled brake system
-
Certification ECU (smart key ECU assembly)
-
Wire harness or connector
|
DTC Output Confirmation Operation:
-
Drive the vehicle at a vehicle speed of 25 km/h (16 mph) or more for 20 seconds, and then drive the vehicle at a vehicle speed of less than 5 km/h (3 mph) for 20 seconds.
|
B228262
|
Vehicle Speed Signal Compare Failure
|
The vehicle speed signal sent by the skid control ECU via direct line and the vehicle speed signal sent via CAN communication do not match. (1-trip detection logic*)
|
-
Electronically controlled brake system
-
Certification ECU (smart key ECU assembly)
-
Wire harness or connector
|
DTC Output Confirmation Operation:
-
Drive the vehicle at a vehicle speed of 50 km/h (31 mph) or more for 10 seconds, and then drive the vehicle at a vehicle speed of less than 50 km/h (31 mph).
|
-
*: Only detected while a malfunction is present and the ignition switch is ON.
Vehicle Condition and Fail-safe Function when Malfunction Detected
DTC Code
|
Vehicle Condition when Malfunction Detected
|
Fail-safe Function when Malfunction Detected
|
B228231
|
-
The power source mode is changed to off (the hybrid control system is stopped) by pressing the power switch while the vehicle is being driven.
-
With the electrical key transmitter sub-assembly in the cabin, even if a hybrid control system start operation is performed, the hybrid control system will not start.
|
-
|
B228262
|
-
When the signal sent via either direct line or CAN communication is malfunctioning and indicates that the vehicle speed is 0 km/h (0 mph), there is no effect on vehicle behavior.
-
When the signal sent via either direct line or CAN communication is malfunctioning and indicates that the vehicle is moving, the ignition switch cannot be turned from ON to off.
|
-
|
Related Data List and Active Test Items
DTC No.
|
Data List and Active Test
|
B228231
B228262
|
Power Source Control
-
Vehicle Running Condition (Line)
-
Power Supply Condition
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
PROCEDURE
1.
|
READ VALUE USING GTS (VEHICLE SPEED)
|
(a) Read the Data List according to the display on the GTS.
Chassis > Brake/EPB > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Diagnostic Note
|
Vehicle Speed
|
Vehicle speed
|
Min.: 0.0 km/h (0 mph)
Max.: 6553.5 km/h (4072 mph)
|
Vehicle stopped: 0.0 km/h (0 mph)
|
When driving at constant speed: No large fluctuations
|
Chassis > Brake/EPB > Data List
Tester Display
|
Vehicle Speed
|
OK:
Vehicle speed displayed on the GTS is almost the same as the actual vehicle speed measured using a speedometer tester.
OK
|
|
|
2.
|
READ VALUE USING GTS (VEHICLE RUNNING CONDITION (LINE))
|
(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
|
Vehicle Running Condition (Line)
|
Vehicle being driven or stopped
|
Stop or Running
|
Stop: Vehicle stopped
Running: Vehicle being driven at 5 km/h (3 mph) or more
|
-
|
Body Electrical > Power Source Control > Data List
Tester Display
|
Vehicle Running Condition (Line)
|
OK:
The GTS display changes correctly in response to the vehicle condition.
Result
|
Proceed to
|
The value of Vehicle Running Condition (Line) is Stop
|
A
|
The value of Vehicle Running Condition (Line) is not Stop
|
B
|
A
|
|
|
3.
|
READ VALUE USING GTS (VEHICLE RUNNING CONDITION (LINE))
|
(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
|
Vehicle Running Condition (Line)
|
Vehicle being driven or stopped
|
Stop or Running
|
Stop: Vehicle stopped
Running: Vehicle being driven at 5 km/h (3 mph) or more
|
-
|
Body Electrical > Power Source Control > Data List
Tester Display
|
Vehicle Running Condition (Line)
|
OK:
The GTS display changes correctly in response to the vehicle condition.
Result
|
Proceed to
|
The value of Vehicle Running Condition (Line) is Driving
|
A
|
The value of Vehicle Running Condition (Line) is not Driving
|
B
|
B
|
|
|
4.
|
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY))
|
(a) Disconnect the A51 skid control ECU (brake actuator assembly) connector.
(b) Disconnect the O175 certification ECU (smart key ECU assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
O175-13 (SPD) - A51-33 (SP1)
|
Always
|
Below 1 Ω
|
O175-13 (SPD) or A51-33 (SP1) - Other terminals and body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
5.
|
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
(a) Connect the O175 certification ECU (smart key ECU assembly) connector.
(b) Connect the A51 skid control ECU (brake actuator assembly) connector.
(c) Using an oscilloscope, check the waveform.
*a
|
Component with harness connected
(Certification ECU (Smart Key ECU Assembly))
|
*b
|
Waveform
|
OK:
Tester Connection
|
Condition
|
Tool Setting
|
Specified Condition
|
O175-13 (SPD) - I167-29 (E)
|
Ignition switch ON, vehicle being driven at approx. 5 km/h (3 mph)
|
5 V/DIV., 20 ms./DIV.
|
Pulse generation
(See waveform)
|
HINT:
The wavelength becomes shorter as the vehicle speed increases.
|