Pinpoint Test F: DTC U012D, U042E

NOTE: Make sure battery voltage is greater than 12.2 volts prior to and during this pinpoint test.

NOTE: Do not have a battery charger attached during vehicle testing.

F1 CHECK VEHICLE FOR PRESENCE OF GRILLE SHUTTERS
- While looking through the grille opening, inspect the vehicle for the presence of grille shutters. REFER to: Active Grille Shutter .
Is the vehicle equipped with grille shutters?

Yes GO to F2

No GO to F3

F2 RETRIEVE PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) WITH GRILLE SHUTTER ACTUATOR DISCONNECTED
- Ignition OFF.
- Disconnect Grille Shutter Actuator C1651.
- Ignition ON.
- Using a diagnostic scan tool, perform the PCM self-test.
Is DTC U012D or U042E present?

Yes GO to F3

No INSTALL new grille shutter actuator. REFER to: Active Grille Shutter .

F3 COMPARE THE GENERATOR B+ CIRCUIT TO BATTERY VOLTAGE

Measure and record:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1558A-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage within 0.5 volt of the recorded battery voltage?

Yes

GO to F4

TIGHTEN or INSTALL a new generator B+ nut as needed. REFER to: Generator - 2.0L Duratec-HE (110kW/150PS) - MI4 . VERIFY high current BJB fuse MEGA 5 (275A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the circuit short.

F4 CHECK THE GENERATOR LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect Generator C1558B.

Disconnect PCM C1915B.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1558B-1	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

GO to F5

F5 CHECK THE GENERATOR LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1558B-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to F6

No	REPAIR the circuit.

F6 CHECK THE GENERATOR LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1558B-1	Courtesy of FORD MOTOR COMPANY	C1915B-47
C1558B-1	Courtesy of FORD MOTOR COMPANY	C1651-2

Is the resistance less than 3 ohms?

Yes	INSTALL a new generator. REFER to: Generator - 2.0L Duratec-HE (110kW/150PS) - MI4 . REPEAT the PCM self-test. If DTC U012D is retrieved again, GO to F7

No	REPAIR the affected circuit.

F7 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PCM connectors.

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

Reconnect the PCM 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, Refer to PCM GUIDED ROUTINE TESTING
CLEAR all Diagnostic Trouble Codes (DTCs) in all modules.

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