Every air bag module
has its firing circuit to deploy air bag according to signal of
SRSCM.SRSCM checks every air bag module when ignition "ON". Once any fault
is detected, it is erased only by scantool.
The SRSCM sets DTC
B1395 if there's any short circuit in harness of every firing circuit to
one another.
Item
|
Detecting
Condition
|
Possible
cause
|
DTC Strategy
|
| •
|
Check current(PWM
type) | |
| •
|
Short circuit among squib
harnesses. |
|
Enable Conditions
|
|
Threshold Value
|
| •
|
Only check during start-up
phase | |
Diagnostic
Time
|
Qualification
|
|
De-Qualification
|
|
| 1. |
Ignition "OFF", connect
scantool. |
| 2. |
Ignition "ON"& Engine "OFF", select
"Diagnostic Trouble Codes(DTC)"
mode. |
| 3. |
Monitor diagnostic trouble code and present
of trouble code. |
| 4. |
Using a scantool, clear the
DTC.
|
| 5. |
Is DTC present problem ?
▶ Check for short between ignition circuits
of DAB,PAB,BPT,CAB,SAB. If the condition of harness and component is
OK, this fault is caused by SRSCM internal error so replace a
known-good SRSCM and then go to "Verification of vehicle Repair"
procedure.
▶ Displaying nothing(no DTC) or DTC with
label "H"(historical) shows that Fault is intermittent caused by
poor contact in the part’s and/or SRSCM connector or was repaired
and SRSCM memory was not cleared.
Thoroughly check connectors for looseness,
poor connection, bending, corrosion, contamination, deterioration,
or damage.
▶ Repair or replace as necessary and then go
to "Verification of Vehicle Repair"
procedure. |
| Verification of Vehicle
Repair |
Refer to the
DESCRIPTION in this TROUBLESHOOTING
section.
