Diagnostic Test

1. If any ACTIVE codes are present they must be resolved before diagnosing any stored codes. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Diagnosis and Testing .
2. Review the Technical Service Bulletins (TSBs) related to the reported symptoms.

   Are there any related TSBs?

   Yes 

   • Perform the appropriate TSB procedure.
   • Perform the RE-ZERO OCM SEAT WEIGHT SENSORS procedure. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .

   No 

   • Go to step  2

1. With the scan tool, record and erase all OCM DTCs. Monitor for any active codes as you work through the following steps.
2. Review the code monitored and set conditions for any DTCs that are stored and attempt to reproduce the conditions listed.
3. Wiggle the wiring harness and connectors of the related airbag circuit, sensor, or component.
4. Turn the ignition off, wait five seconds, turn the ignition on.
5. Wait one minute, and read active codes, if there are none present, read the stored codes.

   Was the source of the customer complaint found or did any DTCs appear and stay active?

   Yes 

   • Perform the appropriate DTC diagnostic procedure. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Diagnosis and Testing .

   No 

   • Go to step  3

In the event the customer complaint cannot be duplicated due to an intermittent condition in the restraints system, the following may aid in attempting to reproduce the condition.

1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors related to the stored code or component in question.
2. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
3. Reconnect any disconnected components and harness connectors and ensure they are properly seated.
   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.
4. Wait one minute, and read active codes, if there are none present, read the stored codes.
5. If numerous trouble codes were set, use a schematic and inspect any common ground or supply circuits.

   Was the source of the intermittent condition located?

   Yes 

   • Perform the appropriate diagnostic procedure. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Diagnosis and Testing .

   No 

   • Perform the RE-ZERO OCM SEAT WEIGHT SENSORS. Refer to DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure .