Here’s a detailed guide on repairing encrypted Renesas R7F7010643 Ford airbags using the CGDI CG100X Programmer.
Model Example:
- Vehicle: Ford Focus 2023
- Restraint Control Module (RCM) Part Number: RJ7T-14B321-AB
- Processor: Renesas R7F7010643 (Encrypted)
Step 1: Diagnose the Airbag Module
1.Read SRS Fault Codes
Use the CG70 airbag reset tool or a diagnostic scanner.
Launch the CG70 software, select Ford, and choose the appropriate part number. The software will display the wiring diagram.
Connect the airbag module to the CG70 tool and read the fault codes.
2.Identify the Crash Data Issue
If fault code B1193 - Crash Event Storage Full and Locked appears, it indicates crash data is stored in the airbag control module (ACM/SDM).
This fault cannot be cleared with diagnostic tools, as it gives the error: "Cannot execute routine."
Solution: Use the CG100X programmer to erase the crash data.
Step 2: Repair Airbag with CGDI CG100X
1.Understand Compatibility
The R7F7010643 processor is encrypted, and CG70 cannot handle it.
CG100X is required for decrypting and erasing the crash data. Note that tools like OBDSTAR P50 can only diagnose this issue but cannot erase the crash.
2.Prepare the Setup
Launch the CG100X software, select Ford, and search for the part number. The software will display the wiring diagram.
Carefully review the wiring setup.
3.Wiring Requirements
Remove one capacitor from the airbag module’s mainboard.
Use the following:
- D1 Adapter
- 2mm Thin Cable
- 10 kΩ Resistor
Important: Be cautious when desoldering the capacitor as it is very small.
4.Connect the Module
Attach the SRS module to the CG100X using the D1 adapter.
Ensure the 5.10 kΩ resistor does not touch the board to avoid short circuits or communication failures.
5.Decrypt and Read Data
Begin decrypting the chip.
Read the chip's DFlash and PFlash, then save the data.
6.Repair Airbag Data
Confirm to repair the airbag data when prompted.
Write the repaired data back to the chip.
Crash data is successfully erased, and the SRS module is now repaired.
7.Post-Repair Actions
Disconnect all wires from the CG100X.
Re-solder the capacitor back onto the airbag module’s mainboard.
Step 3: Verify the Repair
Reconnect with CGDI CG70
Connect the airbag module back to the CG70 airbag reset tool.
Read the fault codes to ensure no crash data is stored.
Conclusion
Using CG100X, you can successfully repair encrypted Renesas R7F7010643 airbag modules for Ford vehicles. Ensure all connections and procedures are followed precisely to avoid errors or damage during the process.