SECTION 501-20B: Supplemental Restraint System
2014 Flex Workshop Manual
GENERAL PROCEDURES
Procedure revision date: 05/02/2013

Supplemental Restraint System (SRS) Depowering and Repowering

 

Depowering Procedure

 WARNING: Wear eye and ear protection when servicing a vehicle. Failure to follow this instruction may result in serious personal injury.

 WARNING: Never probe the electrical connectors on airbag, Safety Canopy or side air curtain assemblies. Failure to follow this instruction may result in the accidental deployment of these assemblies, 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 RCM fuse is removed and the ignition is ON.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

  1. Turn all vehicle accessories OFF.
  1. Turn the ignition OFF.
  1. At the BCM , located behind the LH lower kick panel, remove the lower kick panel fuse cover and RCM fuse 41 (7.5A) from the BCM . Refer to the Wiring Diagrams manual.
  1. 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) when the correct RCM fuse is removed. If the air bag warning indicator is not lit continuously, remove the correct RCM fuse before proceeding.
  1. Turn the ignition OFF.

  1.  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 Section 501-20B 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. Refer to Section 414-01 .
 

Repowering Procedure

Vehicles with an ignition switch

  1. Turn the ignition from OFF to ON.
  1. Install RCM fuse 41 (7.5A) to the BCM and install the cover.

  1.  WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag 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.
  1. Prove out the SRS 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 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 to complete the testing of the SRS . If the air bag warning indicator is inoperative and a SRS 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 faults.
  1. Clear all CMDTCs from the RCM and Occupant Classification System Module (OCSM).

Vehicles with a push-button start system Intelligent Access (IA))

  1. Install RCM fuse 41 (7.5A) to the BCM and install the cover.
  1. Remove the run/start relay from the Battery Junction Box (BJB).
  1. Install a 30A fused jumper wire in BJB run/start relay cavities 3 and 5 as shown.

  1.  WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any airbag 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.
  1. Wait at least 30 seconds, then remove the fused jumper wire from the BJB .
  1. Install the run/start relay in the BJB and install the cover.
  1. Prove out the SRS 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 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 . If the air bag warning indicator is inoperative and a SRS 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 faults.
  1. Clear all CMDTCs from the RCM and OCSM .