Pinpoint Test Ar: P2C94, P2C95

WARNING: This page is about a different car, the 2022 Ford Police Interceptor Utility and 2022 Ford Explorer. 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 - System Operation and Component Description .

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

AR1 CHECK FOR BECM (BATTERY ENERGY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, read the continuous memory diagnostic trouble codes (CMDTCs) from the BECM.
Are any BECM continuous memory diagnostic trouble codes (CMDTCs) present?

Yes DIAGNOSE the BECM diagnostic trouble codes (DTCs).

No GO to AR2

AR2 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 C1035B .

Disconnect SOBDMC C1458A .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1058B-20	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

GO to AR3

AR3 CHECK THE CONTACTOR RELAY CONTROL CIRCUIT SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1058B-20	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to AR4

No	REPAIR the circuit.

AR4 CHECK THE CONTACTOR RELAY CONTROL CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1058B-20	Courtesy of FORD MOTOR COMPANY	C1458A-K4

Is resistance less than 3 ohms?

Yes

GO to AR5

No	REPAIR the circuit.

AR5 CHECK THE CONTACTOR SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4816A-3	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) diagnostic trouble codes (DTCs) and REPEAT the self-test.