GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2002 🢒 Grand Prix 🢒 Restraints 🢒 Seat Belts 🢒 Diagnostic System Check - Seat Belts

Test Description

The number(s) below refer to the step number(s) on the diagnostic table:

  1. Tests to see if the scan tool powers up

    2.

  2. Tests to see if the scan tool can communicate with the inflatable restraint sensing and diagnostic module (SDM)

    3.

  3. Test to see if the Driver Side Belt Status parameter displays buckled

    4.

  4. Test to see if DTC 001 is present in the body control module (BCM)

Step

Action

Yes

No

Schematic Reference: Seat Belt Schematics

1

Install a scan tool.

Does the scan tool power up?

Go to Step 2

Go to Scan Tool Does Not Power Up in Data Link Communications

2

  1. Turn ON the ignition, with the engine OFF.
  2. Attempt to establish communication with the SDM.

Does the scan tool communicate with the SDM?

Go to Step 3

Go to Scan Tool Does Not Communicate with UART Data Line in Data Link Communications

3

  1. Buckle the driver seat belt.
  2. With a scan tool, observe the Driver Side Belt Status in the SIR data list.

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

Go to Step 4

Go to Symptoms - Seat Belts

4

  1. Disconnect the scan tool.
  2. Enter the BCM On - Board Diagnostic features. Refer to On-Board Diagnostic Features in Body Control System.

Does the BCM indicate that DTC 001 is present?

Go to DTC 001

Go to Symptoms - Seat Belts