Pinpoint Test C: P2CFC:00, P2CFD:00, P2CFE:00

WARNING: This page is about a different car, the 2023 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.

Refer to AUTOMATIC CLIMATE CONTROL SYSTEM for schematic and connector information.

Normal Operation and Fault Conditions

Voltage is provided to the A/C clutch SMART Field-Effect Transistor (FET) at all times. The A/C clutch SMART (FET) is a non serviceable part of the printed circuit board on the BCMC [also known as BJB ].

When A/C is requested and no fault conditions are present, the PCM grounds the A/C clutch control input circuit that is hardwired to the A/C clutch SMART (FET) processing in the BCMC. The BCMC sends battery voltage on the clutch control output circuit that is hardwired to the A/C clutch field coil. For additional information on A/C Request, REFER to: Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC) - System Operation and Component Description .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
BCMC P2CFC:00	A/C Clutch Control Circuit: No Sub Type Information	BCMC reports the clutch Smart FET control output circuit is open.
BCMC P2CFD:00	A/C Clutch Control Circuit Low: No Sub Type Information	BCMC reports the clutch Smart FET control output circuit is shorted to ground.
BCMC P2CFE:00	A/C Clutch Control Circuit High: No Sub Type Information	BCMC reports the clutch Smart FET control output circuit is shorted to power.

Possible Sources

Wiring, terminals or connectors
A/C clutch control FET (non-serviceable, part of the BCMC)
BCMC

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector.

C1 CHECK THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH FIELD COIL GROUND CIRCUIT FOR AN OPEN

Make sure HVAC controls are selected OFF.

Ignition OFF.

Disconnect A/C clutch and field coil C100A.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C100A Pin 2	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes

GO to C2

No	REPAIR the circuit.

C2 CHECK THE A/C (AIR CONDITIONING) CLUTCH SMART FET (FIELD-EFFECT TRANSISTOR) OUTPUT TO THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH FIELD COIL WITH A TEST LAMP

NOTE: The following step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250- 300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

Ignition OFF.

Connect a 12-volt incandescent test lamp between:

Positive Lead	Measurement / Action	Negative Lead
C100A Pin 1	Courtesy of FORD MOTOR COMPANY	C100A Pin 2

Ignition ON.

Access the PCM and control the ACC_CMDPID

Does the test lamp illuminate?

Yes

INSTALL a new A/C clutch and A/C clutch field coil. REFER to: AIR CONDITIONING (A/C) CLUTCH AND AIR CONDITIONING (A/C) CLUTCH FIELD COIL - 2.3L ECOBOOST (199KW 270PS) , or refer to AIR CONDITIONING (A/C) CLUTCH AND AIR CONDITIONING (A/C) CLUTCH FIELD COIL - 2.7L ECOBOOST (238KW 324PS) , or refer to AIR CONDITIONING (A/C) CLUTCH AND AIR CONDITIONING (A/C) CLUTCH FIELD COIL - 3.0L ECOBOOST (299KW 406PS) (DD) . CLEAR all Diagnostic Trouble Codes (DTCs). TEST the system for normal operation.

GO to C3

C3 CHECK THE A/C (AIR CONDITIONING) CLUTCH SMART FET (FIELD-EFFECT TRANSISTOR) OUTPUT CONTROL CIRCUIT FOR A SHORT TO VOLTAGE

Measure:

Positive Lead	Measurement / Action	Negative Lead
C100A Pin 1	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

GO to C4

C4 CHECK THE A/C (AIR CONDITIONING) CLUTCH SMART FET (FIELD-EFFECT TRANSISTOR) OUTPUT CONTROL CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C100A Pin 1	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to C5

No	REPAIR the circuit.

C5 CHECK THE A/C (AIR CONDITIONING) CLUTCH SMART FET (FIELD-EFFECT TRANSISTOR) OUTPUT CONTROL CIRCUIT FOR AN OPEN

Disconnect BJB

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1035A Pin 10	Courtesy of FORD MOTOR COMPANY	C100A Pin 1

Is the resistance less than 3 ohms?

Yes

GO to C6

No	REPAIR the circuit.

C6 CHECK FOR CORRECT BCMC (BODY CONTROL MODULE C) OPERATION

Ignition OFF.

Disconnect and inspect all BCMC electrical connectors (if not previously disconnected).

Repair:
- corrosion (install new connector or terminal - clean module pins)
- damaged or bent pins - install new terminals or pins
- pushed-out pins - install new pins as necessary

Connect all BCMC electrical connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCMC. REFER to: Body Control Module C (BCMC) .

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.