Air bag warning lamp is located at cluster
When key is in 'ignition on' position, SRSCM performs diagnosis of overall air bag system.If there's no fault, air bag.
Warning lamp in cluster flickers for a whlie and then goes out.
SRSCM measures voltage of out terminal of warning lamp to check if warnning lamp is operated in accordance with signal SRSCM sends.
If you strike or spin the SRSCM at the IG “ON” state, the seat-belt pretensioner, curtain-airbag or side-airbag could be unfolded and bring on danger. Handle it with care.
The SRSCM sets DTC B2500 if there is an open circuit or short to ground in air bag circuit harness.
Item | Detecting Condition | Possible cause | |
DTC Strategy |
•
Check voltage |
•
Burnt-out fuse.
•
Burnt-out warning lamp.
•
Open circuit in warning lamp harness.
•
Short circuit in warning lamp harness.
•
Faulty SRSCM. | |
Enable conditions |
•
Ignition "ON" | ||
Threshold Value | Lamp "OFF" |
•
Line voltage < 1.8V -> ground short | |
Lamp "ON" |
•
Line voltage > 5.7V -> battery short | ||
Diagnostic Time | Qualification |
•
More than 1s (100ms x 10) | |
De-Qualification |
•
More than 2s | ||
