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 |
After a repair, it is
essential to verify that the fault has been corrected.
| 1. |
Connect scantool and select "Diagnostic
Trouble Codes(DTC)" mode. |
| 2. |
Using a scantool, clear the
DTC. |
| 3. |
Operate the vehicle within DTC Enable
conditions in General information. |
| 4. |
Are any DTC present ?
|
|
▶ Go to the
applicable troubleshooting procedure.
|
|
|
▶ System is
performing to specification at this
time.
|
|
