Occupant Classification Module (OCM)

B210D-BATTERY VOLTAGE LOW







- When Monitored:
While the Occupant Classification Module (OCM) CAN bus ignition status received is RUN or signal not available, the module checks the (A27) Fused B(+) circuit voltage input range.

- Set Condition:
If the OCM detects that the battery voltage is less than or equal to 6.25 volts ± 0.25 volt.





1. VERIFY THAT DTC B210D-BATTERY VOLTAGE LOW IS ACTIVE

NOTE: Make sure the battery is fully charged.

NOTE: Troubleshoot any PCM/ECM charging/cranking DTCs before proceeding.

1. Turn the ignition on.
2. With the scan tool, read the Occupant Classification Module (OCM) DTCs.

Does the scan tool display active B210D-BATTERY VOLTAGE LOW IS ACTIVE DTC?

Yes

- Go To 2

No

- Perform the OCS INTERMITTENT TEST. OCS Intermittent Test.

2. VERIFY (A27) FUSED B(+) CIRCUIT





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.

1. Disconnect the OCM connectors.

WARNING: Turn the ignition on, then reconnect the 12-volt battery. Failure to follow these instructions may result in possible serious or fatal injury.

2. Measure the voltage between the (A27) Fused B(+) circuit OCM C1 connector cavity 1 and ground.

Is the voltage above 6.5 volts circuit?

Yes

- 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 may result in possible serious or fatal injury.

- Replace the OCM.
- Perform the RE-ZERO OCM SEAT WEIGHT SENSORS diagnostic procedure. Re-Zero OCM Seat Weight Sensors.

No

- Repair the (A27) Fused B(+) circuit for an open or high resistance.
- Perform the RE-ZERO OCM SEAT WEIGHT SENSORS diagnostic procedure. Re-Zero OCM Seat Weight Sensors.