Nissan Maxima Service and Repair Manual: B1209 - B1210 collision detection
DTC B1209 - B1210 COLLISION DETECTION
The air bag diagnosis sensor unit will set this DTC if it has detected a
collision which has resulted in a frontal
or side deployment of one or more air bags or pre-tensioners. If this DTC is detected after a SRS repair, the air
bag diagnosis sensor unit has not yet been replaced. This DTC can not be erased.
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE (With CONSULT)
Turn ignition switch ON.
2.CHECK SELF-DIAG RESULT
Check for the DTC on CONSULT.