Astro Van 2WD V6-4.3L VIN X (2002)
Impact Sensor: Service and Repair
Inflatable Restraint Sensing and Diagnostic Module Replacement
INFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE REPLACEMENT
REMOVAL PROCEDURE
CAUTION:
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Be careful when you handle a sensing and diagnostic module (SDM). Do not strike or jolt the SDM. Before applying power to the SDM:
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Remove any dirt, grease, etc. from the mounting surface
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Position the SDM horizontally on the mounting surface
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Point the arrow on the SDM toward the front of the vehicle
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Tighten all of the SDM fasteners and SDM bracket fasteners to the specified torque value
Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SIR system repairs.
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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:
1. Remove all water.
2. Repair the water damage.
3. Replace the SDM harness connector.
4. Replace the SDM.
Failure to follow these tasks could result in possible air bag deployment, personal injury, or otherwise unneeded SIR system repairs.
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Refer to SIR Caution in Service Precautions.
1. Disable the SIR system. Refer to Air Bag(s) Arming and Disarming.
2. Remove the drivers seat.
3. Remove the carpet retaining sill trim molding.
4. Fold back the carpet to access the inflatable restraint sensing and diagnostic module (SDM).
5. Remove the connector position assurance (CPA) (1) from the inflatable restraint sensing and diagnostic module (SDM) wiring harness connector
(2).
6. Push down the flex lock button (3) and slide the connector locking cover (4) to the open position.
