Ford F150 Pickup. Manual — part 1368
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Natural gas (and all other fuel vapors) can be harmful if inhaled.
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All fuels can be harmful or fatal if swallowed.
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All fuels are irritating to eyes and respiratory system.
Handling
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Be aware of Mercurous Mercaptan "Rotten egg" smell of natural gas.
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Use flammable gas handling precautions.
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Keep flammable gases in approved, labeled containers.
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Use in well ventilated areas and control vapors. Be aware that natural gas is not visible, is lighter than air,
can travel along the ceiling, and may collect in high hollows.
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When transferring flammable gases, connect vent stack to source, and ground source to earth.
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DO NOT smoke, or use heat/spark producing equipment near natural gas.
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DO NOT eat, drink or smoke where fuels are handled, processed or stored.
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Wash hands thoroughly after handling any fuel.
Leakage
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Notify proper authorities in event of any leakage you have not been trained to address.
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Stop, and allow fuel to ventilate to outside atmosphere after any fuel escape.
DRIVE CYCLE
For gasoline engine related drive cycles, see DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL
& GASOLINE article.
OBD-II BI-FUEL DRIVE CYCLE DESCRIPTION
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When a fault is detected for the first time the DTC is stored in the AFCM memory.
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When the same fault is detected in two consecutive trips or if the fault is emission related, the PCM will
illuminate the MIL. The PCM will cease MIL illumination if the fault condition no longer exists or when
the vehicle is driven two times with no fault detected.
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The PCM will also cease MIL illumination if the vehicle auto-switches to gasoline. The drive cycle is
counted only when the recorded driving pattern is met. If another fault occurs while counting, the counter
will reset.
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The DTC can be displayed until the vehicle is driven 40 times.
NOTE:
Rough road conditions may prevent certain steady state conditions and steady
accelerations from validating the transmission and load related monitors. On
models with Power Take-Off (PTO), disengage PTO system before performing
drive cycle.
2003 Ford Pickup F150
2003 ENGINE PERFORMANCE Self-Diagnostics - Bi-Fuel - Gasoline/CNG
OBD-II BI-FUEL DRIVE CYCLE TRIP
A trip is defined as a key-on, key-off event in which the PCM and AFCM detect the following:
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Engine coolant should exceed 160°F (71°C).
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Engine coolant temperature should change more than 40°F (22°C) after starting the engine.
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Engine speed should exceed 400 RPM.
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Vehicle speed above 3 MPH.
When the AFCM detects an emission related DTC, it uses the trip information to determine MIL light status.
If a fault exists in the system being tested, a Diagnostic Trouble Code (DTC) will be stored in the AFCM
memory. Depending on the type of fault detected, some DTCs will command immediate MIL illumination.
Other faults will cause the AFCM to store the DTC in memory but not illuminate the MIL until the fault is
detected again on a subsequent trip (2nd trip).
SUMMARY
If no DTC exists but driveability problem still exists, proceed to TROUBLE SHOOTING - NO CODES - BI-
FUEL - GASOLINE/CNG article for symptom diagnosis or intermittent diagnostic procedures.
DIAGNOSTIC TROUBLE CODE DEFINITIONS
DIAGNOSTIC TROUBLE CODE DEFINITIONS
NOTE:
Prior to performing any system test, see HOW TO USE SYSTEM TESTS under
SYSTEM TESTS. On some models, PCM is capable of storing some body DTCs.
If any "B" DTCs are retrieved (example DTC B1213), see appropriate MODULE
COMMUNICATIONS NETWORK article in ACCESSORIES & EQUIPMENT to
determine test to perform.
NOTE:
If Powertrain Control Module (PCM) is replaced, new PCM must be programmed.
See PROGRAMMING . If Alternate Fuel Control Module (AFCM) is replaced,
perform AFCM reset procedure. For AFCM related DTC definitions, see
DIAGNOSTIC TROUBLE CODE DEFINITIONS table. For PCM related DTC
definitions, see DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-
DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article.
DTC
Description
Go To Test
B1219
Fuel Tank Pressure Sensor Circuit Failure
(1)
B1220
Fuel Tank Pressure Sensor Circuit Short To Voltage
(1)
B1317
System Voltage High
(2)
B1318
System Voltage Low
(2)
P0182
Fuel Rail Temperature Sensor Circuit Low Input
DA
2003 Ford Pickup F150
2003 ENGINE PERFORMANCE Self-Diagnostics - Bi-Fuel - Gasoline/CNG
CONNECTOR IDENTIFICATION
P0183
Fuel Rail Temperature Sensor Circuit High Input
DA
P0192
Fuel Rail Pressure Sensor Circuit Low Input
DE
P0193
Fuel Rail Pressure Sensor Circuit High Input
DE
P0201-P0208
Injector Circuit Open
H
P0261
Injector No. 1 Circuit Low
H
P0262
Injector No. 1 Circuit High
H
P0264
Injector No. 2 Circuit Low
H
P0265
Injector No. 2 Circuit High
H
P0267
Injector No. 3 Circuit Low
H
P0268
Injector No. 3 Circuit High
H
P0270
Injector No. 4 Circuit Low
H
P0271
Injector No. 4 Circuit High
H
P0273
Injector No. 5 Circuit Low
H
P0274
Injector No. 5 Circuit High
H
P0276
Injector No. 6 Circuit Low
H
P0277
Injector No. 6 Circuit High
H
P0279
Injector No. 7 Circuit Low
H
P0280
Injector No. 7 Circuit High
H
P0282
Injector No. 8 Circuit Low
H
P0283
Injector No. 8 Circuit High
H
P0605
AFCM Read Only Memory Error
(3)
P0606
AFCM Internal Communication Error
(3)
P1261-P1268
Alternate Fuel Injector Circuit Low
H
P1271-P1278
Alternate Fuel Injector Circuit High
H
U0309
(4)
Software Incompatibility With AFCM
(5)
U1011
(4)
SCP Invalid Or Missing Data
U
U1260
(4)
SCP Single Ended (+) Circuit Failure
UA
U1261
(4)
SCP Single Ended (-) Circuit Failure
UA
U1262
(4)
SCP Communication Bus Fault
UA
(1)
See appropriate ANALOG INSTRUMENT PANEL article in ACCESSORIES & EQUIPMENT.
(2)
See appropriate GENERATORS & REGULATORS article in ELECTRICAL.
(3)
Clear DTC and repeat QUICK TEST . If DTC resets, replace AFCM. See REMOVAL &
INSTALLATION - F150 PICKUP - BI-FUEL - GASOLINE/CNG article.
(4)
All network DTCs listed are Continuous Memory DTCs.
(5)
AFCM identification code is incompatible with PCM. Verify correct AFCM vehicle application.
2003 Ford Pickup F150
2003 ENGINE PERFORMANCE Self-Diagnostics - Bi-Fuel - Gasoline/CNG
CONNECTOR VIEWS
Fig. 2: Identifying AFCM Connector C1427 Terminals
Courtesy of FORD MOTOR CO.
NOTE:
For connector views referred to in diagnostic tests, and circuit functions, see
Fig. 2 -Fig. 17 .
2003 Ford Pickup F150
2003 ENGINE PERFORMANCE Self-Diagnostics - Bi-Fuel - Gasoline/CNG
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