Occupant Classification

OCM REZERO

1. VERIFY POST DEPLOYMENT REPAIRS

NOTE: Make sure that the battery is fully charged.

NOTE: Verify that the scan tool has the latest software update before proceeding with this test.

NOTE: If any airbags have been deployed, make sure all components related to the deployment have been inspected or replaced.

NOTE: Correct all active ORC DTC except the Interrogate OCM, and Driver and Passenger STPS DTC in OCM DTC, before performing this procedure.

NOTE: Correct all active OCM DTC except the B1BA7-OCCUPANT CLASSIFICATION SYSTEM VERIFICATION REQUIRED, and B1BA8-OCM OUT OF CALIBRATION/NOT CALIBRATED DTC, before performing this procedure.

NOTE: Make sure that the passenger seat is empty and in the full rearward position before performing this procedure.

NOTE: Make sure the vehicle is setting level and the interior is at room temperature.

NOTE: Make sure the Passenger Seat Belt is unbuckled and completely retracted.

Continue

- Go To 2

2. PERFORM THE OCS VERIFICATION SYSTEM TEST
1. With the scan tool in OCM, select MISC. FUNCTION and OCM REZERO.
2. Follow the instructions on the scan tool to complete the test.
3. Select the OCM REZERO procedure results from the list below.

Rezero Passed and Completed

- The OCM has passed the Rezero test and the repair is complete.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

OCM Rezero Failed

- Go To 3

3. REZERO TEST RESULTS
1. With the scan tool, read the active OCM DTC.

Does the scan tool display any active trouble codes except B1BA7 and B1BA8 DTC?

Yes

- Testing and Inspection and perform the appropriate diagnostic procedure.

No

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4. PERFORM SECOND OCS REZERO TEST
1. With the scan tool in OCM, select MISC. FUNCTION and OCM REZERO.
2. Follow the instructions on the Scan Tool to complete the test.
3. Select the OCM REZERO procedure results from the list below.

Does the scan tool display any active trouble codes except B1BA7 and B1BA8 DTC?

Rezero Passed and Completed

- The OCM has passed the Rezero test and the repair is complete.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

OCM Rezero Failed

- Go To 5

5. REZERO TEST RESULTS
1. With the scan tool, read the active OCM DTC.

Does the scan tool display any active trouble codes?

Yes

- Testing and Inspection and perform the appropriate diagnostic procedure.

No

- Go To 6

6. PERFORM THIRD OCS REZERO TEST
1. With the scan tool in OCM, select MISC. FUNCTION and OCM REZERO.
2. Follow the instructions on the Scan Tool to complete the test.
3. Select the OCM REZERO procedure results from the list below.

Rezero Passed and Completed

- The OCM has passed the Rezero test and the repair is complete.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

OCM Rezero Failed

- WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
WARNING: If the Occupant Classification Module (OCM) is dropped at any time, it must be replaced. Failure to take the proper precautions could result in accidental airbag deployment and serious or fatal injury.
CAUTION: Disconnecting or connecting the OCM connectors with the battery connected permanently damages the OCM.

- Replace the OCM.
- Perform the OCM REZERO. Testing and Inspection.