Schematic Reference: Seat Belt Schematics

Did you review the Seat Belt System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Seat Belts

1. Turn ON the ignition, with the engine OFF.
2. Monitor the fasten safety belt indicator while buckling and unbuckling the driver seat belt.

Does the system operate properly?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

Attempt to establish communication with the BCM.

Does the scan tool communicate with the BCM?

Go to Step 4

Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications

Select the BCM display DTCs function on the scan tool.

Does the scan tool display any "U" DTCs 2000-2007?

Go to DTC U2000-U2007 in Instrument Panel, Gages, and Console

Go to Step 5

With the driver's seat belt buckled, use a scan tool to observe the Driver Side Belt Status parameter in the SIR scan tool data list.

Does the scan tool indicate that the Driver Side Belt Status parameter displays Buckled?

Go to Step 6

Go to Step 9

1. Turn OFF the ignition.
2. Disconnect the inflatable restraint sensing and diagnostic module (SDM) connector. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement in SIR.
3. Disconnect the seat belt switch - LF connector. Refer to Front Seat Belt Buckle Replacement .
4. Test the seat belt switch - LF signal circuit for an open or a high resistance.

Did you find and correct the condition?

Go to Step 12

Go to Step 7

Test the seat belt switch - LF ground circuit for an open or high resistance.

Did you find and correct the condition?

Go to Step 12

Go to Step 8

1. Test the seat belt switch - LF for an open.
2. Replace the seat belt switch - LF if it is malfunctioning. Refer to Front Seat Belt Buckle Replacement .

Did you find and correct the condition?

Go to Step 12

Go to Step 11

1. Turn OFF the ignition.
2. Disconnect the inflatable restraint sensing and diagnostic module (SDM) connector. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement in SIR.
3. Disconnect the seat belt switch - LF connector. Refer to Front Seat Belt Buckle Replacement .
4. Test the seat belt switch - LF signal circuit for a short to voltage or a short to ground.

Did you find and correct the condition?

Go to Step 12

Go to Step 10

1. Test the seat belt switch - LF for a short.
2. Replace the seat belt switch - LF if it is malfunctioning. Refer to Front Seat Belt Buckle Replacement .

Did you find and correct the condition?

Go to Step 12

Go to Step 11

Replace the IPC. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the replacement?

Go to Step 12

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Operate the system in order to verify the repair.

Did you find and correct the condition?

System OK

Go to Step 3