In collision, SRSCM
sends current to pertinent air bag for deployment. Besides SRSCM performs
diagnosis of overall air bag system and light warning lamp if there's any
fault in it. Main functions of SRSCM are as follows.
| 1. |
Collision and Passenger presence
Detection. |
| 2. |
Determination of BPT and air bag deployment in
accordane with given condition. |
| 3. |
Internal and external diagnosis of air bag
system. |
| 4. |
Warning by warning lamp if there's any fault
in airbag system. |
| 5. |
Proffering data for scantool
diagnosis. |
[B1657] The SRSCM sets
DTC B1657 if any BPT deploys.
[B1658] When the Crash
(Belt pretentioner 6times depoyment) recorded in the SRSCM.
Item
|
Detecting
Condition
|
Possible cause
|
DTC Strategy
|
|
|
Enable Conditions
|
|
Diagnostic
Time
|
Qualification
|
|
De-Qualification
|
B1657
|
|
B1658
|
| •
|
∞ (dequalification not
permitted) | |
| 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 ?
▶ DTC caused by deployment of BPT. Substitute
with a SRSCM and check for proper operation. If the problem is
corrected, replace SRSCM and then go to "Verification of Vehicle
Repair" procedure. |
| Verification of Vehicle
Repair |
Refer to the DESCRIPTION
in this TROUBLESHOOTING section.
