Diagnostic Test

DETERMINE ACTIVE OR STORED DTC
1. Make sure the battery is fully charged.
2. Turn the ignition on.
3. Wait 12 seconds, then with the scan tool, read all active OCM DTCs.
  Is the DIAGNOSTIC TROUBLE CODE (DTC) active or stored?
  
  OCM - ACTIVE DTC
  - Go To 2
  OCM - STORED DTC
  - Perform the RESTRAINTS SYSTEM INTERMITTENT TEST. Refer to STANDARD PROCEDURE .
CHECK BCM VEHICLE INFORMATION
1. Using the scan tool, check for the correct Country Code, Vehicle Line, and Body Style.
  Does the Vehicle Configuration in the BCM match the Vehicle Configuration in the OCM?
  
  Repair
  
  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 may result in possible serious or fatal injury.
  
  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.
  - Replace the OCM in accordance with Service Information. Refer to MODULE, OCCUPANT CLASSIFICATION, REMOVAL .
  - Perform the OCCUPANT CLASSIFICATION MODULE (OCM) VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
STORED OCM DTC
1. With the scan tool, record and erase all OCM DTC's.
2. If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.
  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.
3. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
4. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
5. The following additional checks may assist you in identifying a possible intermittent problem.
6. Reconnect any disconnected components and harness connector.
  WARNING:
  Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
7. With the scan tool monitor active codes as you work through the following steps.
  WARNING:
  Maintain a safe distance from all airbags while performing the following steps. Failure to follow these instructions may result in possible serious or fatal injury.
8. Wiggle the wiring harness and connectors of the related OCM circuits or component.
9. If only stored codes return continue the test until the problem area has been isolated.
10. In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question.
  Are any ACTIVE DTC's present?
  
  Yes
  - Perform the appropriate diagnostic procedure . Refer to the DTC INDEX .
  No
  - No problem found at this time. Erase all codes before returning vehicle to customer.