Restraints
B210D-BATTERY VOLTAGE LOWB210D - Battery Voltage Low:
WHEN MONITORED
While the Occupant Classification module (OCM) CAN bus ignition status received is RUN or Signal Not Available (SNA), the module checks the (A27) Fused B(+) circuit voltage input range and the (F200) Fused Ignition Switch Output 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 volts.
POSSIBLE CAUSES
- OCM (A27) Fused B(+) circuit open
- OCM (F200) fused ignition switch output circuit open
- Vehicle charging system
- Occupant classification module
Diagnostic Test
1. VERIFY THAT DTC B210D-BATTERY VOLTAGE LOW IS ACTIVE
NOTE:
- Ensure the battery is fully charged.
- Troubleshoot any PCM charging/cranking DTCs before proceeding.
Turn the ignition on.
With the scan tool, read the Occupant Classification Module (OCM) DTCs.
Q: Does the scan tool display active: B210D-BATTERY VOLTAGE LOW?
YES: Go To 2
NO: Go To 3
2. CHECK VOLTAGE OF OCM (A27) FUSED B(+) AND (F200) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUITS.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the OCM C1 connector.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
Measure the voltage between Ground and the (f200) Fused Ignition Switch Output (Run-Start) circuit.
Measure the voltage between Ground and the (A27) Fused B(+) circuit.
Q: Is the voltage above 6.0 volts on both circuits?
YES: Replace the OCM. Perform OCS SYSTEM VERIFICATION TEST VER - 1 OCS Verification Test
NO: Repair the (A27) Fused B(+) and/or (F200) Fused Ignition Switch Output (Run-Start) circuits for an open or high resistance. Perform OCS SYSTEM VERIFICATION TEST VER - 1 OCS Verification Test
3. CHECKING STORED OR INTERMITTENT CODES
NOTE: Diagnose and repair all active codes before diagnosing stored codes. Refer to Trouble Code Diagnostic Charts for a complete list of airbag system diagnostic procedures.
With the scan tool, record and erase all Airbag System Module DTCs.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Using the wiring diagram/schematic as a guide, inspect the related wiring and connectors for chaffed, 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: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
Q: Does the scan tool display any ACTIVE DTCs?
YES: Select the appropriate diagnostic procedure.
NO: No problem found at this time. Perform OCS SYSTEM VERIFICATION TEST VER - 1 OCS Verification Test Erase all codes before returning vehicle to customer.