Note: This procedure requires multiple ON/OFF groundings with critical
timing intervals; as such, multiple attempts may be required to achieve
a successful clear operation. (Helps to have a diagnostic grounding tool.)

Ground ALDL connector's pin K to pin A
Turn ignition key to "ON" position throughout procedure
Wait for "INFL REST" light to begin flashing
While flashing, disconnect ground for a period of 3 seconds; after 3 seconds
Reconnect ground for a period of 3 seconds; after 3 seconds
Disconnect ground for a period of 10 seconds; after 10 seconds
Reconnect ground and observe flashing "INFL REST" light for DTC(s)
Code 12 should flash 3 times
Code 12 will again flash 3 times if no DTC remains to be cleared
Turn "OFF" ignition key
Repeat procedure if necessary or remove ground (pin K to pin A)