Clients from another province contacted us requesting a crash data reset and full testing of an SRS module from a Subaru 2024 vehicle.
Part number: 98221CC120
This generation uses a modern airbag control unit built around the Renesas R7F7016863 processor. Not every programming tool supports this MCU architecture. Improper handling can permanently lock the module.
📌 BEFORE
• Crash event stored in memory
• Airbag warning light active
• Fault codes not erasable via OBD
• Hardware verification required
Modern SRS units store impact data internally. Standard diagnostics cannot clear it.
Enter Diagnostic Session… ok
Read Part Number… 98221CC120
Read Errors…
B11F9:00-0A – !!! SIDE IMPACT DEPLOYMENT !!!
B1832:00-08 – (history) SHORT IN CURTAIN AIRBAG RH SQUIB CIRCUIT (TO GROUND)
B1822:00-08 – (history) SHORT IN SIDE AIRBAG RH (TO GROUND)
B1821:00-0A – OPEN IN SIDE AIRBAG RH
B1831:00-0A – OPEN IN CURTAIN AIRBAG RH SQUIB CIRCUIT
B1655:00-0A – FRONT BUCKLE SWITCH RH FAILURE
U0100:00-0A – LOST COMMUNICATION WITH ECM PCM A
U0122:00-0A – LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE
U0128:00-0A – Unknown Error
U0155:00-0A – LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE
U0140:00-0A – LOST COMMUNICATION WITH BODY CONTROL MODULE
U0101:00-0A – LOST COMMUNICATION WITH TCM
B178D:00-0A – Unknown Error
B1698:00-0A – DOOR SENSOR LH INITIALIZATION INCOMPLETE
B1693:00-0A – DOOR SENSOR RH INITIALIZATION INCOMPLETE
B1613:00-0A – FRONT SUB SENSOR RH INITIALIZATION ERROR
B1618:00-0A – FRONT SUB SENSOR LH INITIALIZATION ERROR
B1623:00-0A – SIDE AIRBAG SENSOR RH INITIALIZATION ERROR
B1628:00-0A – SIDE AIRBAG SENSOR LH INITIALIZATION ERROR
B1633:00-0A – CURTAIN AIRBAG SENSOR RH INITIALIZATION ERROR
B1638:00-0A – CURTAIN AIRBAG SENSOR LH INITIALIZATION ERROR
B1806:00-0A – OPEN IN PASSENGER’S AIRBAG
B1911:00-0A – OPEN IN FRONT RIGHT PRETENSIONER SQUIB CIRCUIT
B1901:00-0A – OPEN IN FRONT P/T RH
B1861:00-0A – OPEN IN DRIVER’S KNEE AIRBAG
B1801:00-0A – OPEN IN DRIVER’S AIRBAG
B1836:00-0A – OPEN IN CURTAIN AIRBAG LH SQUIB CIRCUIT
B1906:00-0A – OPEN IN FRONT P/T LH
B1826:00-0A – OPEN IN SIDE AIRBAG LH
B1816:00-0A – OPEN IN PASSENGER’S AIRBAG DUAL STAGE – 2ND STEP
B1811:00-0A – OPEN IN DRIVER’S AIRBAG DUAL STAGE – 2ND STEP
⚙️ Our Process
✔️ Professional disassembly and inspection
✔️ Direct communication with R7F7016863 MCU
✔️ Secure memory readout
✔️ Correct crash data reset
✔️ Checksum verification
✔️ Bench testing before shipping
We use advanced equipment compatible with 2023–2024 SRS modules.
Connect MCU… ok
Get device type… RH850 standart
Set Oscillator Frequency… 16MHz
Set Baudrate… ok
Read MCU lock status… !!! LOCKED !!!
Bypassing MCU lock… ,,,,,,:,,,,:,,,,,,,,:,::,:,,,,,,,,,::,,
Bypassed.
Read password security status… not secured
Read MCU type… R7F701686
CodeFlashSize = 00080000
DataFlashSize = 00010000
UserBootSize = 00008000
Read ICUS Status… Off
Read Option Bytes… CFFF279AFFFDFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Get Protection Byte… ok
Read enabled
Write enabled
Erase enabled
Read Option Bytes… ok
Read CodeFlash… ok
Creating backup “Subaru 98221CC120 R7F701686 UserBoot
Read UserBoot… ok
Creating backup “Subaru 98221CC120 R7F701686 DataFlash
Read DataFlash… ok
Clearing Crash by Dump… ok
Erase DataFlash… ok
Write DataFlash… ok
✅ AFTER
• Crash data fully cleared
• No permanent SRS faults
• Module passes self-diagnostics
• Ready for reinstallation
We provide airbag module repair and crash data reset services in Surrey and Vancouver, BC, and accept mail-in orders across Canada.
