Front Impact Sensor(FIS)located at both sides of the front of engine room detects head-on collision. When FIS delivers collision signal to SRSCM, SRSCM checks if safing sensor located in SRSCM detects collusion.
and if both FIS and safing sensor detects collision simultaneously, SRSCM operates front air bag.
The SRSCM sets DTC B1334 if there is any error in communication between PFIS and SRSCM
Item | Detecting Condition | Possible cause | |
DTC Strategy |
•
Check Data | 1. Poor connection of connected part. 2. Faulty PFIS. 3. Faulty SRSCM. | |
Enable Conditions |
•
Ignition "ON" | ||
Threshold Value |
•
PFIS no acceleration data, and line voltage is ok (between 3V and 11V)
•
PFIS High or Low of wire ignition short or Short to ground
•
PFIS High or Low of wire Open | ||
Diagnostic Time | Qualification |
•
More than 0.1~6 sec | |
De-Qualification |
•
More than 1 sec | ||
