Diagnostic Test
- VERIFY THAT DTC B2101 IGNITION RUN/START INPUT CIRCUIT LOW IS ACTIVE IN THE OCM. NOTE: Ensure the battery is fully charged.
- CHECK (A952) FUSED B(+) CIRCUIT VOLTAGE
- With the scan tool in Data Display, read OCM battery voltage.
Is the battery voltage below 6.5 volts?
Yes
- If the problem is in the OCM Seat Harness, replace the OCM Seat Harness otherwise Repair the (A952) Fused B(+) circuit in the body harness.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure .
No
- Replace the OCM in accordance with the Service Information.
- Perform the OCM SYSTEM VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Standard Procedure .
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 is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental airbag deployment and serious or fatal injury.
- With the scan tool in Data Display, read OCM battery voltage.
- TEST FOR INTERMITTENT B2101-IGNITION RUN/START INPUT CIRCUIT LOW DTC NOTE: Diagnose and repair all active codes before diagnosing stored codes. Refer to DIAGNOSTIC CODE INDEX for a complete list of airbag system diagnostic procedures.
- With the scan tool, record and erase all Airbag System Module DTCs.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.
- Using the SYSTEM WIRING DIAGRAMS as a guide, inspect the related wiring and connectors for chafed, pierced, pinched, and partially broken wires, and for broken, bent, pushed out, corroded, and contaminated terminals. Repair as necessary.
- Reconnect all disconnected components and harness connectors.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.
Does the scan tool display any ACTIVE DTCs?
Yes
- Select appropriate diagnostic from DIAGNOSTIC CODE INDEX . See DTC-Based Diagnostics/MODULE, Occupant Classification (OCM) - Diagnosis and Testing .
No
- No problem found Erase all codes before returning vehicle to customer.
- With the scan tool, record and erase all Airbag System Module DTCs.