B210D-BATTERY VOLTAGE LOW

For a complete wiring diagram Refer to Section 8W.

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.

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

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

Does the scan tool display active: B210D-BATTERY VOLTAGE LOW?

Yes

Go To 2

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.

Is the voltage above 6.0 volts on both circuits?

Yes

Replace the OCM in accordance with the service information.
Perform *OCS SYSTEM VERIFICATION TEST VER - 1

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

3. CHECKING STORED OR INTERMITTENT CODES

NOTE: Diagnose and repair all active codes before diagnosing stored codes. Refer to the Table of Contents in this Section 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 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: To avoid personal injury or death, turn the ignition on, then reconnect the battery.

Does the scan tool display any ACTIVE DTCs?

Yes

Select the appropriate diagnostic procedure from the Table of Contents in this section.

No problem found at this time. Perform the *OCS SYSTEM VERIFICATION TEST - VER 1 in this Section. Erase all codes before returning vehicle to customer.