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 B1327 if there is short to power harness in DFIS harness.
Item | Detecting Condition | Possible cause | |
DTC Strategy | ● Check current(PWM type) | ● Short to power in harness. ● Faulty DFIS. ● Faulty SRSCM. | |
Enable Conditions | ● Ignition "ON" | ||
Threshold Value | ● Rs ＜ 50Ω | ||
Diagnostic Time | Qualification | ● More than 2 sec | |
De-Qualification | ● More than 4 sec | ||
Test Condition | Resistance |
Ignition OFF | Rs ＞1㏀ |
