Ford F150 Pickup. Instruction - part 1402

other self-tests or driving vehicle.  

An injector circuit fault can result in unrelated DTCs being received from PCM. If engine idles rough or 
Continuous Memory DTCs are present, turn ignition switch to ON position. Using scan tool, select INJxF PIDs 
from PID/DATA MONITOR & RECORD menu. There is one INJxF PID available for each engine cylinder 
and the "x" indicates the appropriate injector number (1-10). If any PID value indicates YES, an injector fault 
exists. Turn ignition switch to OFF position and disregard any DTCs that are present at this time. On CNG 
models, go to TEST HA, step 60) under SYSTEM TESTS. On all others, go to TEST H, step 56) under 
SYSTEM TESTS. If all PID values indicate NO, service DTCs that are present in the following order: KOEO 
DTCs, KOER DTCs and then continuous memory DTCs. See DIAGNOSTIC TROUBLE CODE 
DEFINITIONS. After test is complete, cycle ignition switch before performing other self-tests or driving 
vehicle. 

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Self-Diagnostics - CNG, Flex-Fuel & Gasoline

  

ADDITIONAL SYSTEM FUNCTIONS

PARAMETER IDENTIFICATION MODE 

Description 

PID mode allows access to certain data values, analog and digital inputs and outputs, calculated values, and 
system status information. There are 2 types of PID lists available. The first is a Generic OBD-II PID list. This 
is a standard set of PIDs that all scan tools can access. The second is a Ford specific PID list that can be 
accessed by using New Generation Star (NGS) scan tool or Worldwide Diagnostic System (WDS). PID values 
are continuously updated when accessing PIDs from a specific PID list. 

Accessing Generic OBD-II PIDs 

Turn ignition switch to OFF position. Ensure test equipment is properly attached. Program scan tool using the 
following steps:  

z

Select VEHICLE & ENGINE SELECTION menu.  

z

Select NEW VEHICLE, YEAR & MODEL.  

z

Select GENERIC OBD-II OPTIONS. Press CONT button if monitors are not complete.  

z

Select PID/DATA MONITOR & RECORD.  

z

Turn ignition switch to ON position or start engine and allow to idle.  

z

Follow operating instructions from scan tool menu.  

z

Select PIDs and press START to begin monitoring. If PID value is not as specified, perform appropriate 
SYSTEM TEST.  

Accessing Ford Specific PIDs 

Turn ignition switch to OFF position. Ensure test equipment is properly attached. Program scan tool using the 
following steps:  

z

Select VEHICLE & ENGINE SELECTION menu.  

z

Select NEW VEHICLE, YEAR & MODEL.  

z

Select DIAGNOSTIC DATA LINK.  

z

Select POWERTRAIN CONTROL MODULE.  

z

Select PID/DATA MONITOR & RECORD.  

z

Turn ignition switch to ON position or start engine and allow to idle. 

NOTE:

Additional diagnostic system features are available to help diagnose driveability 
concerns and service EEC-V systems.

NOTE:

For complete listing of generic and Ford specific PIDs, see appropriate PIN 
VOLTAGE/PID VALUE CHARTS article.

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Self-Diagnostics - CNG, Flex-Fuel & Gasoline

  

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Self-Diagnostics - CNG, Flex-Fuel & Gasoline

  

z

Follow operating instructions from scan tool menu.  

z

Select PIDs and press START to begin monitoring. If PID value is not as specified, perform appropriate 
SYSTEM TEST.  

ON-BOARD SYSTEM READINESS TEST MODE 

Description 

All OBD-II scan tools should be able to display On-Board System Readings (OSR) test. The OSR will display 
monitors on the vehicle and status of all monitors; complete or not complete. If not complete, the scan tool will 
display which monitor has not completed. Comprehensive component, fuel and misfire monitors run 
continuously and will always display YES. Only a PCM reset, or keep alive RAM reset will cause non-
continuous monitors to reinitialize and display NO. 

Accessing OSR Test Mode 

To enter OSR test mode, turn ignition switch to OFF position. Ensure test equipment is properly attached. 
Program scan tool using the following steps:  

z

Select VEHICLE & ENGINE SELECTION menu.  

z

Select NEW VEHICLE, YEAR & MODEL.  

z

Follow operating instructions from scan tool menu.  

z

Select GENERIC OBD-II FUNCTIONS. Press TEST button if monitors are not complete.  

z

Start engine and allow to idle.  

z

Select ON-BOARD SYSTEM READINESS.  

FREEZE FRAME DATA MODE 

Description 

FREEZE FRAME DATA MODE allows access to emission-related values from specific generic Parameter 
Identifications (PIDs). These PID values are stored when an emission-related DTC is stored in continuous 
memory and provide a snapshot of the conditions that were present when DTC was stored. See FREEZE 
FRAME DATA table. 

FREEZE FRAME DATA 

Acronym

Description

Measurement Units

ECT

Engine Coolant

Degrees

FUELSYS1

Open/Closed Loop1

OL/CL/OL, Drive/OL, Fault CL, Fault

FUELSYS2

Open/Closed Loop2

OL/CL/OL, Drive/OL, Fault CL, Fault

LONGFT1

Long Term Fuel Bank1

Percent

LONGFT2

Long Term Fuel Bank2

Percent

LOAD

Calculated Load Value

Percent

RPM

Engine RPM

Rev/Min

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Self-Diagnostics - CNG, Flex-Fuel & Gasoline

  

Freeze frame data will remain in memory even if another emission-related DTC is stored, with exception to 
misfire or fuel system DTCs. When freeze frame data for a misfire or fuel system DTC is stored, it will 
overwrite any previous data and freeze frame data will not be overwritten. When freeze frame DTCs are erased 
or a PCM memory reset is performed, new freeze frame data will be stored. If multiple emission-related DTCs 
are stored in memory, always note freeze frame data DTC. Some unique PIDs are stored in PCM keep alive 
RAM to help in diagnosing root causes to misfires. See MISFIRE FREEZE-FRAME PIDS table. 

These unique PIDs are collectively called Misfire Freeze Frame (MFF) data. These PIDs are separate from 
generic freeze frame data that is stored for MIL codes and are used for misfire diagnosis only. MFF data is more 
useful for misfire diagnosis than normal diagnosis alone. MFF is captured at time of highest misfire rate, not 
when DTCs are normally stored at the end of a 1000 or 200 revolution block. Generic freeze frame data for a 
misfire can be stored minutes after a misfire actually occurs. 

MISFIRE FREEZE-FRAME PIDS 

Accessing Freeze Frame Data Mode PIDs 

To access FREEZE FRAME DATA MODE, turn ignition switch to OFF position. Ensure test equipment is 
properly attached. Program scan tool using the following steps: 

SHRTFT1

Short Term Fuel Bank1

Percent

SHRTFT2

Short Term Fuel Bank2

Percent

VSS

Vehicle Speed

MPH/KMH

NOTE:

MFF PIDs are supported on all vehicles, but may not be available on all scan 
tools. Enhanced PID access may vary by scan tool manufacturer.

PID

Description

PID No.

Units

MFF RPM

Engine RPM At Time Of Misfire

16D3

RPM

MFF 
LOAD

Engine Load At Time Of Misfire

16D4

PERCENT

MFF VS

Vehicle Speed At Time Of Misfire

16D5

MPH/KPH

MFF IAT

Intake Air Temperature At Time Of Misfire

16D6

DEGREES

MFF 
SOAK

Engine-Off Soak Time At Time Of Misfire

16D7

MINUTES

MFF 
RNTM

Engine Running Time At Time Of Misfire

16D8

SECONDS

MFF EGR

EGR DPFE Sensor At Time Of Misfire

16D9

VOLTAGE

MFF TP

Throttle Position At Time Of Misfire

16DA

VOLTAGE

MFF T 
CNT

No. Of Driving Cycles At Time Of Misfire (At Least One 1000 

Revolution Block)

16DC

TRIPS

MFF PNP

1= In Drive During Time Of Misfire

16DD 

b1

MODE

MP LRN

1= Misfire Wheel Profile Learned In Keep Alive RAM

16DD 

b0

NONE

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Self-Diagnostics - CNG, Flex-Fuel & Gasoline