The OBDSTAR P50 supports crash data reset for Toyota encrypted airbag modules. In this example, we will demonstrate how to clear crash records from a Toyota Airbag ECU equipped with the CYT2B93BAC chip using bench mode.
Required Tools
Before starting, prepare the following equipment:
OBDSTAR P50
High-Power DC Power Supply
Main Cable
Jumper Wires
P004 Adapter
C4-06 Adapter Kit
Toyota Airbag ECU (CYT2B93BAC Chip)
Step 1: Enter Crash Reset Function
Power on the OBDSTAR P50 and ensure the software has been updated to the latest version.
Navigate to: AIRBAG RESET → SRS
Use the search function in the upper-right corner to locate the target airbag ECU model.
Step 2: Select Connection Method
Tap Start.
Choose: BENCH → P004 → OK
You can tap:
Guide to view menu descriptions, operation instructions, and adapter information.
Connector Pinout to view the wiring diagram.
Please note that this ECU supports multiple wiring methods. Refer to the corresponding wiring diagram and perform the required operation accordingly.
Tap OK to continue.
Connect all cables according to the wiring diagram provided by the device.
Step 3: Check ECU Status
After completing the wiring connection:
1. Tap ECU Info
2. Tap Read DTC
The device will detect the fault codes stored in the airbag module and indicate that crash data is present.
Next, tap Erase DTC.
At this stage, the operation will fail because the crash record still exists in the ECU.
Step 4: Clear Crash Data
Tap Erase Crash.
Press START to begin the procedure.
The OBDSTAR P50 will process the airbag module and display a message indicating that the crash data has been successfully cleared.
Follow the on-screen instructions:
1. Turn the ignition OFF.
2. Wait approximately 30 seconds.
3. Turn the ignition ON again.
Step 5: Clear and Verify DTCs
After the crash data has been removed:
1. Tap Erase DTC
2. Confirm that the device displays Erase DTC Success
3. Tap Read DTC again
Verify that all DTCs have been successfully cleared and no crash records remain in the airbag ECU.
Video Tutorial
For a complete step-by-step demonstration, please watch the video guide:
Conclusion
Using the OBDSTAR P50, technicians can efficiently perform a crash data reset on Toyota encrypted airbag modules equipped with the CYT2B93BAC chip. By following the correct bench connection method and using the P004 adapter, crash records can be cleared successfully, allowing DTCs to be erased and the airbag ECU to return to normal operating status.
