Pinpoint Test Bu: P2C94, P2C95

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions

REFER to: Electric Powertrain Control - Component Location .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
SOBDMC P2C94:00	Hybrid/EV Battery Contactor Control Supply Circuit Low: No Sub Type Information	This DTC sets when a short to ground is detected in the contactor control circuit.
SOBDMC P2C95:00	Hybrid/EV Battery Contactor Control Supply Circuit High: No Sub Type Information	This DTC sets when an open circuit is detected in the contactor control circuit.

Possible Sources

Wiring, terminals or connectors

BU1 CHECK FOR BECM (BATTERY ENERGY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, read the CMDTCs from the BECM.
Are any BECM DTC's present?

Yes DIAGNOSE the BECM DTC's. REFER to: High Voltage Battery, Mounting and Cables .

No GO to BU2

BU2 CHECK THE CONTACTOR RELAY CONTROL CIRCUIT SHORT TO VOLTAGE

Ignition OFF.

Depower the high voltage battery. REFER to: High Voltage System De-energizing .

Disconnect BCMC C1035C.

Disconnect SOBDMC C1458A.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1035C-35	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

GO to BU3

BU3 CHECK THE CONTACTOR RELAY CONTROL CIRCUIT SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1035C-35	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to BU4

No	REPAIR the circuit.

BU4 CHECK THE CONTACTOR RELAY CONTROL CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1035C-35	Courtesy of FORD MOTOR COMPANY	C1458A-K4

Is resistance less than 3 ohms?

Yes

GO to BU5

No	REPAIR the circuit.

BU5 CHECK THE CONTACTOR SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3733-8 (female side)	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

No	The system is operating correctly at this time. The DTC may have set due to high network traffic or an intermittent fault condition. CLEAR the Inverter System Controller (ISC) DTCs and REPEAT the self-test.