DESCRIPTION
This DTC is stored when there is a malfunction in the certification ECU (smart key ECU assembly) battery power supply circuit or ground circuit.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Note |
---|---|---|---|---|
B228B |
System Voltage or GND Energization Malfunction |
Either of the following malfunctions is detected (a vehicle speed sensor malfunction is detected) (1-trip detection logic*):
|
|
|
Vehicle Condition |
|||
---|---|---|---|
Pattern 1 |
Pattern 2 |
||
Diagnosis Condition |
Drive the vehicle. |
○ |
○ |
Malfunction Status |
A malfunction is detected in the certification ECU (smart key ECU assembly) battery power supply circuit. |
○ |
- |
A malfunction is detected in the certification ECU (smart key ECU assembly) ground circuit. |
- |
○ |
|
Detection Time |
- |
- |
|
Number of Trips |
1 trip |
1 trip |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected |
Fail-safe Function when Malfunction Detected |
---|---|
The engine stopped while driving. |
- |
DTC No. |
Data List and Active Test |
---|---|
B228B |
- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
HINT:
When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE) |
Click here
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE |
|
2. |
CHECK HARNESS AND CONNECTOR (GROUND) |
Click here
OK | ![]() |
END (TEMPORARY CONNECTION FAILURE IS SUSPECTED)
|
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE |
Toyota CH-R Service Manual > Lighting System: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the lighting system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
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Toyota CH-R Service Manual > Vehicle Stability Control System: Speed Sensor Rotor Faulty (C1237)
DESCRIPTION
The skid control ECU (brake actuator assembly) measures the speed of each wheel
by receiving signals from each speed sensor.
These signals are used for recognizing that all four wheels are operating properly.
Therefore, signals from all wheels must be equal.
DTC No.
...