Ford F150 Pickup. Instruction - part 1250

2003 ENGINE PERFORMANCE

Pin Voltage/PID Value Charts - F150 Pickup - Bi-Fuel - Gasoline/LPG 

INTRODUCTION 

Parameter Identification (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 Ford 
specific PID list that can be accessed by using New Generation Star (NGS) scan tool or Worldwide Diagnostic 
System (WDS). The second is a Generic OBD-II PID list. This is a standard set of PIDs that all manufacturer's 
scan tools can access. Generic PIDs are located at the end of each PIN VOLTAGE/PID VALUES chart. 

PIN VOLTAGE/PID VALUES charts are used for diagnosing intermittent symptoms and faults that are unable 
to be resolved during self-diagnostics. Pin tests ensure the Powertrain Control Module (PCM) is receiving and 
transmitting proper voltage and other signals. If diagnosing a symptom, see appropriate symptom in 
SYMPTOM TESTING under TEST PROCEDURES. 

PID values are continuously updated when accessing PIDs from a specific PID list. Before performing tests, 
ensure mechanical conditions have been inspected and self-diagnostics has been attempted. Technical Service 
Bulletins (TSBs) may also be helpful in correcting a hard to diagnose problem. 

TEST EQUIPMENT 

In order to read Parameter Identification (PID) values, a New Generation Star (007-00500 ) scan tool, 
Worldwide Diagnostic System (WDS) or other OBD-II compliant scan tool is required. A DVOM, 104-pin 
Breakout Box (014-00950 ) and appropriate adapter cable are used to check PCM pin values. If a breakout box 
is not available, PCM pin values can be checked by backprobing PCM connector. 

TEST PROCEDURES 

PIN VOLTAGE TESTING 

Access PCM connector. See POWERTRAIN CONTROL MODULE LOCATIONS . If a breakout box is 
available, disconnect negative battery terminal. Connect breakout box to PCM harness connector and PCM. 
Reconnect negative battery cable. Take desired measurements between ground pin and specified pin on 

NOTE:

For information pertaining to the gasoline portion, see PIN VOLTAGE CHARTS - 
CUTAWAY, ECONOLINE, F450 SUPER DUTY, F550 SUPER DUTY, PICKUP & RV 
CUTAWAY - GASOLINE & CNG article.

CAUTION: When battery is disconnected, vehicle computer and memory systems 

may lose memory data. Driveability problems may exist until computer 
systems have completed a relearn cycle. See COMPUTER RELEARN 
PROCEDURES article in GENERAL INFORMATION before disconnecting 
battery.

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Pin Voltage/PID Value Charts - F150 Pickup - Bi-Fuel - Gasoline/LPG

  

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Pin Voltage/PID Value Charts - F150 Pickup - Bi-Fuel - Gasoline/LPG

  

breakout box. If breakout box is not available, take desired measurements between ground pin and specified pin 
at PCM connector (backprobe PCM connector). See appropriate illustration in PIN VOLTAGE/PID VALUE 
CHARTS under PID DEFINITIONS & PIN VOLTAGE/PID VALUES. 

SYMPTOM TESTING 

On all applications, using REFERENCE VALUE SYMPTOM CHART can help in selecting PIDs that are 
related to a specific fault area. See Fig. 1 . Select a symptom from the chart, note category number and proceed 
to Fig. 2 and Fig. 3 . For multiple symptoms, select most evident symptom. Match category number with 
related PIDs/measured signals (component and signal) and perform PID TESTING . 

Fig. 1: Reference Value Symptom Chart 

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Pin Voltage/PID Value Charts - F150 Pickup - Bi-Fuel - Gasoline/LPG

  

Courtesy of FORD MOTOR CO. 

Fig. 2: Reference Value PID/Measured Signal Chart (1 Of 2) 
Courtesy of FORD MOTOR CO. 

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Pin Voltage/PID Value Charts - F150 Pickup - Bi-Fuel - Gasoline/LPG

  

Fig. 3: Reference Value PID/Measured Signal Chart (2 Of 2) 
Courtesy of FORD MOTOR CO. 

PID TESTING 

Some vehicles may not display all input and output PID signals. Reference values may vary plus or minus 20 
percent depending on operating conditions and other factors. RPM values are axle ratio and tire size dependent. 

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.  

Compare actual PID values on scan tool to PID values in appropriate chart under PIN VOLTAGE/PID 
VALUE CHARTS under PID DEFINITIONS & PIN VOLTAGE/PID VALUES. If PID value is not as 
specified, perform appropriate SYSTEM TEST in SELF-DIAGNOSTICS - BI-FUEL - GASOLINE/LPG 
article. 

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.

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Pin Voltage/PID Value Charts - F150 Pickup - Bi-Fuel - Gasoline/LPG