CAUTION: Be careful when you handle a sensing and diagnostic module (SDM). Do
not strike or jolt the SDM. Before applying power to the SDM:
| • | Remove any dirt, grease, etc. from the mounting surface |
| • | Position the SDM horizontally on the mounting surface |
| • | Point the arrow on the SDM toward the front of the vehicle |
| • | Tighten all of the SDM fasteners and SDM bracket fasteners to
the specified torque value |
Caution: If any water enters the vehicle's interior up to the level of the carpet
or higher and soaks the carpet, the sensing and diagnostic module (SDM) and
the SDM harness connector may need to be replaced. The SDM could be activated
when powered, which could cause deployment of the air bag(s) and result
in personal injury. Before attempting these procedures, the SIR system must
be disabled. Refer to Disabling the SIR System.
With the ignition OFF, inspect the SDM mounting area, including the
carpet. If any significant soaking or evidence of significant soaking is
detected, you must perform the following tasks:
- Remove all water.
- Repair the water damage.
- Replace the SDM harness connector.
- Replace the SDM.
Failure to follow these tasks could result in possible air
bag deployment, personal injury, or otherwise unneeded SIR system repairs.
Removal Procedure
- Disable the SIR system. Refer to
Disabling the SIR System
.
- Remove the passenger front seat. Refer to
Split Bench Seat Replacement
or to
Bucket Seat Replacement
in Seats.
- Remove the passenger front carpet retainer, then roll back the carpet.
- Remove the connector position assurance (CPA) from the connector on
the inflatable restraint sensing and diagnostic module (SDM).
- Disconnect the connector from the SDM.
- Remove
the SDM mounting fasteners (1).
- Remove the SDM (2) from the floor pan (3).
Installation Procedure
- Install
the SDM (2) to the vehicle (3).
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the SDM mounting fasteners (1).
Tighten
Tighten the fasteners to 10 N·m (89 lb in).
- Connect the connector to the SDM.
- Install the CPA to the SDM connector.
- Position the carpet to cover the SDM, and install the carpet retainer.
- Install the passenger front seat. Refer to
Split Bench Seat Replacement
or to
Bucket Seat Replacement
in Seats.
- Enable the SIR system. Refer to
Enabling the SIR System
.
- If you replaced the SDM, perform the following procedure in order to
update the BCM with the new SDM part number:
| | Important: The AIR BAG indicator may remain ON after the SDM is replaced. After programming
the SDM part number into the BCM, cycle the ignition switch OFF and ON. This turns
OFF the AIR BAG indicator and clears the DTC.
|
| 8.1. | Install a scan tool. |
| 8.2. | Select the Special Functions option from the BCM Menu and press enter. |
| 8.3. | Select the BCM Reprogramming in BCM option and press enter. |
| 8.4. | Follow the procedure on the scan tool display. |
| 8.5. | Cycle the ignition switch OFF and ON. |
