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 B133200 if there is short to power harness in PFIS harness.
Item
Detecting Condition
Possible cause
DTC Strategy
Check voltage
Short to power in harness.
Faulty PFIS.
Faulty SRSCM.
Enable Conditions
Ignition "ON"
Threshold Value
PFIS no acceleration data, and line voltage >11V
Diagnostic Time
Qualification
More than 5 ms (500µs x 10)
De-Qualification
More than 10 ms (500µs x 20)
Test Condition
Voltage
Ignition ON
3V < FIS-Driver line voltage< 11V