Supplemental Restraint System (SRS) Depowering and Repowering
Supplemental Restraint System (SRS) Depowering and Repowering
Depowering Procedure
WARNING: Always wear eye protection when servicing a vehicle. Failure to follow this instruction may result in serious personal injury.
WARNING: Never probe the electrical connectors on air bag, Safety Canopy(R) or side air curtain modules. Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
WARNING: To reduce the risk of accidental deployment, do not use any memory saver devices. Failure to follow this instruction may result in serious personal injury or death.
NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition is ON.
NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.
1. Turn all vehicle accessories OFF.
2. Turn the ignition OFF.
3. At the Body Control Module (BCM), located in the LH lower kick panel, remove the lower kick panel fuse cover and the RCM (Restraints Control Module) fuse 41 (7.5A) from the BCM (Body Control Module). For additional information, refer to the Wiring Diagrams. Electrical Diagrams
4. Turn the ignition ON and monitor the air bag warning indicator for at least 30 seconds. The air bag warning indicator remains lit continuously (no flashing) if the correct RCM (Restraints Control Module) fuse is removed. If the air bag warning indicator is not lit continuously, remove the correct RCM (Restraints Control Module) fuse before proceeding.
5. Turn the ignition OFF.
6. WARNING: Always deplete the backup power supply before repairing or installing any new front or side air bag supplemental restraint system (SRS) component and before servicing, removing, installing, adjusting or striking components near the front or side impact sensors or the restraints control module (RCM). Nearby components include doors, instrument panel, console, door latches, strikers, seats and hood latches.
Refer to the Description and Operation portion of Restraints and Safety Systems &/or Air Bag Systems for location of the RCM and impact sensor(s).
To deplete the backup power supply energy, disconnect the battery ground cable and wait at least 1 minute. Be sure to disconnect auxiliary batteries and power supplies (if equipped).
Failure to follow these instructions may result in serious personal injury or death in the event of an accidental deployment.
Disconnect the battery ground cable and wait at least one minute.
Repowering Procedure
Vehicles with keyed ignition (vehicles with ignition switch)
1. Turn the ignition from OFF to ON.
2. Install RCM (Restraints Control Module) fuse 41 (7.5A) to the BCM (Body Control Module) and close the cover.
3. WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable.
4. Prove out the SRS (Supplemental Restraint System) as follows:
Turn the ignition from ON to OFF. Wait 10 seconds, then turn the ignition back to ON and monitor the air bag warning indicator with the air bag modules installed. The air bag warning indicator illuminates continuously for approximately 6 seconds and then turns off. If a SRS (Supplemental Restraint System) fault is present, the air bag warning indicator will:
- fail to light.
- remain lit continuously.
- flash.
The flashing might not occur until approximately 30 seconds after the ignition has been turned from OFF to ON. This is the time required for the RCM (Restraints Control Module) to complete the testing of the SRS (Supplemental Restraint System). If the air bag warning indicator is inoperative and a SRS (Supplemental Restraint System) fault exists, a chime sounds in a pattern of 5 sets of 5 beeps. If this occurs, diagnose and repair the air bag warning indicator and any SRS (Supplemental Restraint System) faults.
Clear all continuous DTCs from the RCM (Restraints Control Module) and Occupant Classification System Module (OCSM) using a scan tool.
Vehicles with keyless ignition (vehicles with push-button start system [Intelligent Access (IA) ])
5. Install RCM (Restraints Control Module) fuse 41 (7.5A) to the BCM (Body Control Module) and install the cover.
6. Remove the run/start relay from the Battery Junction Box (BJB).
7. Install a 30A fused jumper wire in BJB (Battery Junction Box) run/start relay cavities 3 and 5, as shown.
8. WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
Connect the battery ground cable.
9. Wait at least 30 seconds, then remove the fused jumper wire from the BJB (Battery Junction Box).
10. Install the run/start relay in the BJB (Battery Junction Box) and install the cover.
11. Prove out the SRS (Supplemental Restraint System) as follows:
With the ignition OFF, wait 10 seconds, then turn the ignition ON and monitor the air bag warning indicator with the air bag modules installed. The air bag warning indicator illuminates continuously for approximately 6 seconds and then turns off. If an air bag SRS (Supplemental Restraint System) fault is detected, the air bag warning indicator will:
- fail to light.
- remain lit continuously.
- flash.
The flashing might not occur until approximately 30 seconds after the ignition has been turned from OFF to ON. This is the time required to complete testing of the SRS (Supplemental Restraint System). If the air bag warning indicator is inoperative and a SRS (Supplemental Restraint System) fault exists, a chime sounds in a pattern of 5 sets of 5 beeps. If this occurs, diagnose and repair the air bag warning indicator and any SRS (Supplemental Restraint System) faults.
12. Clear all CMDTCs (Continuous Memory Diagnostic Trouble Codes) from the RCM (Restraints Control Module) and OCSM (Occupant Classification System Module).