Ford Falcon. Manual — part 207

303-14-42

Powertrain Control Management

303-14-42

DESCRIPTION AND OPERATION (Continued)

PCM Pin A3. . . . . . . . ... Injector 6

DTC

Test Mode

Condition

P0207

KOEO, Cont.

INJ7 circuit malfunction

Connections (V8)

P0208

KOEO, Cont.

INJ8 circuit malfunction

PCM Pin A14. . . . . . . . . Injector 1
PCM Pin A3. . . . . . . . ... Injector 2

Failure Mode

PCM Pin A8. . . . . . . . ... Injector 3

Should a fuel injector fail the engine may run rough, a

PCM Pin A10. . . . . . . . . Injector 4

Diagnostic Trouble Code (DTC) will be logged in

memory for the failed injector and subsequent

PCM Pin A4. . . . . . . . ... Injector 5

unexpected changes in the air-fuel ratio.

PCM Pin A7. . . . . . . . ... Injector 6

In the unlikely event that all the fuel injectors fail

PCM Pin A15. . . . . . . . . Injector 7

simultaneously, the vehicle will not run. The

PCM Pin A42. . . . . . . . . Injector 8

appropriate DTC will be reported to indicate failure of

the individual fuel injectors.

Circuit

Testing

The fuel injectors are tested continuously during

vehicle operation (cont.) and whenever a Key On

Engine Off (KOEO) test is performed.

Injector Fouling
Over time, sulphur and other trace elements in petrol

can build-up on the injector spray plate and around

the nozzle. The quality of the fuel plays an important

part in minimising this fouling of the fuel injectors.

Fouling affects both the spray pattern and the volume

of fuel injected. Incorrect spray pattern will cause poor

atomisation and vaporisation of the fuel, which results

in poor combustion, rough idle and high hydrocarbon

and carbon monoxide emissions.

Maintenance

Fouling of the fuel injectors is a common condition

that should be suspected if the engine is running

The fuel rail must be removed to replace the fuel

rough or hesitation during cold acceleration.

injectors. The procedure is described in Fuel Rail in

the ‘Removal and Installation’ section. The fuel

Injector Test

injectors have a fixed orifice size and cannot be

adjusted

1. Disconnect the harness from the fuel injector

connector.

NOTE: If any, or all, of the fuel injectors are replaced,

the Keep Alive Memory (KAM) must be reset to

2. Measure the resistance across the fuel injector

ensure the adaptive idle strategy does not use the

connector terminals using a suitable multimeter.

previous adaptive values. Refer to Resetting The

Replace the fuel injector if not within specification.

Powertrain Control Module.

Repeat the procedure for each fuel injector.

Fuel Injector Solenoid Resistance

Diagnosis

Specification

13.5 to 16.0

Ω

Diagnostic Trouble Codes (DTC) are retrieved through

the diagnostic connector using the WDS tester. Fault

3. Turn the ignition key to the ON position. Do not

Finding Tables for DTCs are in the ‘Diagnosis’

start the engine. Positive power should be applied

section.

to the fuel injectors from the PCM Power Relay.

4. On the harness, measure the voltage between the

DTCs applicable to the fuel injectors are shown in the

positive connector terminal (red wire) and ground

following table.

using a suitable multimeter. Repeat the procedure

DTC

Test Mode

Condition

for each fuel injector.

P0201

KOEO, Cont.

INJ1 circuit malfunction

Fuel Injector Voltage Specification

P0202

KOEO, Cont.

INJ2 circuit malfunction

12 Volts DC

P0203

KOEO, Cont.

INJ3 circuit malfunction

5. Check the harness for open circuits and short

circuits.

P0204

KOEO, Cont.

INJ4 circuit malfunction

P0205

KOEO, Cont.

INJ5 circuit malfunction

P0206

KOEO, Cont.

INJ6 circuit malfunction

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Powertrain Control Management

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DESCRIPTION AND OPERATION (Continued)

Fuel Injector Testing

Circuit

CAUTION: Care should be taken to avoid

damaging the fuel injector tip.
1. Remove the fuel injector and place in a clean

plastic bag to avoid contamination. Number each

bag to identify the cylinder location of the injector

spray plate.

2. Visually examine each fuel injector filter basket

and protection sleeve for damage and

contaminants using a suitable magnifying glass.
NOTE: The injector spray pattern cannot be

tested on the vehicle.

3. Mount the injector in a suitable commercial

injector tester and inspect the spray pattern in

accordance with the operating instructions.

Diagnosis

4. Replace the injector if poor atomisation is found,

Diagnostic Trouble Codes (DTC) are retrieved through

ie: streaming, uneven spray pattern or dribbling.

the diagnostic connector using the WDS tester. Fault

Finding Tables for DTCs are in the ‘Diagnosis’

Ignition Coils

section.

The ignition system is described in Control Systems

DTCs applicable to the ignition coils are shown in the

section.

following table.

Connections (I6)

DTC

Test Mode

Condition (I6) Condition (V8)

PCM Pin A35. . . . . . . . . Ignition Coil 1

P0351

KOEO,

Ignition Coil 1 Ignition Coil 1

PCM Pin A24. . . . . . . . . Ignition Coil 2

KOER Cont Primary /

Primary /

PCM Pin A12. . . . . . . . . Ignition Coil 3

Secondary

Secondary

Circuit Failure Circuit Failure

PCM Pin A23. . . . . . . . . Ignition Coil 4

P0352

KOEO,

Ignition Coil 5 Ignition Coil 3

PCM Pin A46. . . . . . . . . Ignition Coil 5

KOER Cont Primary /

Primary /

PCM Pin A34. . . . . . . . ..Ignition Coil 6

Secondary

Secondary

Circuit Failure Circuit Failure

Connections (V8)

P0353

KOEO,

Ignition Coil 3 Ignition Coil 7

PCM Pin A35. . . . . . . . . Ignition Coil 1

KOER Cont Primary /

Primary /

PCM Pin A24. . . . . . . . . Ignition Coil 2

Secondary

Secondary

PCM Pin A12. . . . . . . . . Ignition Coil 3

Circuit Failure Circuit Failure

PCM Pin A1. . . . . . . . ... Ignition Coil 4

P0354

KOEO,

Ignition Coil 6 Ignition Coil 2

KOER Cont Primary /

Primary /

PCM Pin A46. . . . . . . . . Ignition Coil 5

Secondary

Secondary

PCM Pin A34. . . . . . . . . Ignition Coil 6

Circuit Failure Circuit Failure

PCM Pin A23. . . . . . . . . Ignition Coil 7

P0355

KOEO,

Ignition Coil 2 Ignition Coil 6

PCM Pin A11. . . . . . . . ..Ignition Coil 8

KOER Cont Primary /

Primary /

Secondary

Secondary

Circuit Failure Circuit Failure

P0356

KOEO,

Ignition Coil 4 Ignition Coil 5

KOER Cont Primary /

Primary /

Secondary

Secondary

Circuit Failure Circuit Failure

P0357

KOEO,

Ignition Coil 4

KOER Cont

Primary /

Secondary

Circuit Failure

P0358

KOEO,

Ignition Coil 8

KOER Cont

Primary /

Secondary

Circuit Failure

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Powertrain Control Management

303-14-44

DESCRIPTION AND OPERATION (Continued)

Actuators

Connections

PCM Pin B3. . . . . . . . . . . IMCC Signal

Intake Manifold Charge Control

PCM Pin B34. . . . . . Vehicle Power (VPWR)

On I6 engines (except Turbo), the intake manifold has

an Intake Manifold Charge Control (IMCC) <BBM>

Circuit

system. The IMCC housing is an aluminium casting,

situated below the plenum chamber. It has two intake

air passages for each cylinder. The PCM opens

vacuum control solenoid allowing the vacuum to pass

to the vacuum actuator drawing the valve plates

closed or releasing the vacuum allowing the actuator

to push the valve plates open. The direct mounted

vacuum actuator system and its return springs are

located within the vacuum actuator assembly.
The IMCC system is also described in Control

Systems. The IMCC solenoid controls the vacuum

signal line to the manifold servo control diaphragm.

The solenoid is mounted on the front of the PCM

bracket.

IMCC Solenoid Specification

Engine

Solenoid

PCM Pin

Butterfly

Diagnosis

Speed

Condition

B3 Voltage

Valves

Diagnostic Trouble Codes (DTC) are retrieved through

400 to

ON

12 Volts

Closed

the diagnostic connector using the WDS tester. Fault

3,800 RPM

Finding Tables for DTCs are in the ‘Diagnosis’

above

OFF

0 Volts

Open

section.

3,800 RPM

DTCs applicable to the IMCC solenoid are shown in

the following table.

IMCC Solenoid Location

DTC

Test Mode

Condition

P1520

KOEO, Cont.

circuit malfunction

Failure Mode

During self-test the PCM checks the electrical

continuity of the IMCC circuit. If the circuit fails the

self-test a DTC will be logged in the PCM memory.

Should either the IMCC electrical or vacuum circuit

fail, then the IMCC butterflies will remain open

throughout the entire engine operating range. This will

result in a noticeable lack of power and torque when

operating the engine between 400 to 3,800 RPM.

Testing

The IMCC solenoid is tested continuously during

vehicle operation (cont.) and whenever a Key On

Engine Off (KOEO) test is performed.
Whenever the ignition key is in the ON position,

positive power should be applied to the IMCC

solenoid from the PCM Power Relay.
1. Connect a WDS tester to the diagnostic

connector.

2. Initiate an Output Circuit Check as described in

Diagnosis.

3. Check the Parameter Identification (PID) value of

the IMCC. If the PID value is within specification,

then check for other Diagnostic Trouble Codes

(DTC) or component faults.

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Powertrain Control Management

303-14-45

DESCRIPTION AND OPERATION (Continued)

Sensor Test

Connections

4. Disconnect the engine harness from the IMCC

PCM Pin B24. . . . . . . . . . . . EDF1-2

solenoid electrical connector.

PCM Pin B35. . . . . . .

…. . . . .EDF1-2

5. Connect the multimeter across the IMCC solenoid

Circuit

terminals and measure the resistance of the coil.

IMCC Resistance Spesification

50 to 100

Ω

6. Check the harness for open circuits and short

circuits.

Electro Drive Fans

Electro Drive Fans 1 & 2 provide air flow over the

radiator to remove heat from the engine coolant.

Operation of the fans is controlled by the PCM.
EDF1 and EDF2 PCM outputs control three relays to

operate two electric cooling fans on the radiator.
The relays are wired to switch the fans in series and

parallel combinations to provide low and high speed

operation as shown in the following table.

Fan Speed

EDF1

EDF2

Off

OFF

OFF

Low Speed

ON

OFF

High Speed

ON

ON

Diagnosis
Diagnostic Trouble Codes (DTC) are retrieved through

the diagnostic connector using the WDS tester. Fault

Finding Tables for DTCs are in the ‘Diagnosis’

section.

DTC

Test Mode

Condition

P1474

KOEO

EDF1 Fan Control Relay

Circuit

P1479

KOEO

EDF2 Fan Control Relay

Circuit

Failure Mode

The PCM tests the EDF relay circuits during self test.

If any circuit fails the test, then a Diagnostic Trouble

Code (DTC) will be logged in the PCM memory.

Testing

1. Initiate an Output Circuit Check as described in

Diagnosis.

2. Check the operation of the cooling fan EDF1-2.

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