Chevrolet Cobalt Service & Repair Manual: Air Bag System Disarming & Arming
Disarming
| The Sensing and Diagnostic
Module (SDM) can maintain enough voltage to cause air bag deployment for
up to 10 minutes after the ignition is turned off and the battery is disconnected.
Servicing the Supplemental air bag (SIR) system during this period may result
in accidental deployment and personal injury. |
| The inflatable restraint Sensing
and Diagnostic Module (SDM) maintains a reserved energy supply. The reserved
energy supply provides deployment power for the air bags if the SDM loses
battery power during a collision. Deployment power is available for as much
as one minute after disconnecting the vehicle power. Waiting one minute
before working on the system after disabling the SIR system prevents deployment
of the air bags from the reserved energy supply. |
| 1. |
Ensure front wheels are in straight-ahead
position. |
| 2. |
Place ignition in OFF position and
remove all fuses supplying power to SDM.The SDM may have more
than one fused power input. Ensure all fuses supplying power to
SDM are removed to avoid unwanted SIR deployment, personal injury,
or unnecessary SIR system repairs. |
| 3. |
With all SDM fuses removed and ignition
switch in ON position, AIR BAG warning indicator should illuminate.
This is normal operation, and does not indicate a SIR system malfunction. |
| 4. |
Wait at least two minutes before working
on system. |
|
Arming
| Reverse disarming procedures to
arm the Supplemental Restraint System, noting the following: |
| 1. |
Ensure all disconnected SRS electrical
connectors are securely connected and routed. |
| 2. |
Install all removed fuses in proper
locations. |
| 3. |
From a safe position at sides of or
below air bag module, Turn ignition switch to ON position and observe
Air Bag or SRS warning lamp. |
| 4. |
Warning lamp should flash seven to
nine times, then go off. |
|
Diagnostic Trouble Code Identification
Code
Description
B0012
Driver Steering Wheel Air Bag Deployment Loop Stage 1 Fault
...
Diagnostic Trouble Codes
