Test Procedure

WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

AD1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

Carry out the PCM self-test.
Record the freeze frame data.
Clear the PCM DTCs.
Carry out the PCM self-test.

Are any DTCs present?

Yes	No
DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .	For symptoms without DTCs, GO to AD2.

AD2 CHECK THE VPWR CIRCUITS FOR VOLTAGE

Ignition OFF.
PCM-B connector disconnected.

Connect a 5 amp fused jumper wire between the following:

Point A PCM-B Connector, Harness Side	Point B
PCMRC - Pin 38	Ground

Ignition ON, engine OFF.

Measure the voltage between:

(+) PCM-B Connector, Harness Side	(-)
VPWR - Pin 67, 68, 69	Ground

Check for loose connections. Check for damaged pins or corrosion. Wiggle the harness while taking the measurements.

Is the voltage greater than 10 V?

Yes	No
GO to AD3.	REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test.

AD3 CHECK THE PWRGND CIRCUITS FOR AN OPEN

Ignition OFF.
Remove the jumper wire(s).

Measure the resistance between:

(+) PCM-B Connector, Harness Side	(-)
PWRGND - Pin 70, 71, 72, 73, 74	Ground

Are the resistances less than 5 ohms?

Yes	No
Unable to duplicate the condition. CHECK for a loose connection, and damaged or corroded terminals. WIGGLE the harness attempting to recreate the concern. REPAIR as necessary. REFER to NO DIAGNOSTIC TROUBLE CODES (DTCS) PRESENT SYMPTOM CHART INDEX , if a driveability concern exists.	REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test.