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Page 1

2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

2008 ENGINE PERFORMANCE

Pinpoint Tests - Gasoline Engines

DIAGNOSTIC TESTS

PINPOINT TEST A: NO START

WARNING: Stop this test at the first sign of a fuel leak and repair as required.

No open flame. No smoking during fuel delivery checks. Failure to follow these instructions may result in personal injury.

This pinpoint test is intended to diagnose the following:

 spark (as related to electronic engine control)  powertrain control module (PCM) (12A650)

Fig. 1: Throttle Position (TP) Sensor Connector Courtesy of FORD MOTOR CO.

- A

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 2: Throttle Position (TP) Sensor Connector - B Courtesy of FORD MOTOR CO.

Vehicle Connector Pin Circuit

Escape/Mariner 2.3L, Ranger 2.3L

A 1

All other vehicles B 3

SIGRTN VREF

Fig. 3: Electronic Throttle Body Throttle Position Sensor (ETBTPS) Connector - A Courtesy of FORD MOTOR CO.

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 4: Electronic Throttle Body Throttle Position Sensor (ETBTPS) Connector - B Courtesy of FORD MOTOR CO.

Fig. 5: Electronic Throttle Body Throttle Position Sensor (ETBTPS) Connector Courtesy of FORD MOTOR CO.

Vehicle Connector Pin Circuit

E-Series 4.6L, Edge,

A 2

ETCRTN

ETCREF F-150 4.2L, F-150 4.6L, Focus, MKX, MKZ, Sable, Taurus,

- C

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Taurus X Fusion 2.3L,

B 3

Milan 2.3L Fusion 3.0L,

B 4

Milan 3.0L All other vehicles C 3

ETCRTN

ETCREF

ETCRTN

ETCREF

ETCRTN

ETCREF

Fig. 6: Data Link Connector Courtesy of FORD MOTOR CO.

Pin Circuit

13 FEPS (Flash EEPROM Programming Signal)

A1 ATTEMPT TO CRANK THE ENGINE

NOTE: Verify the inertia fuel shutoff (IFS) switch is set (button pushed in). Refer to the

Owner's Literature for location.

 Does the engine crank?

Yes No

REFER to the STARTING SYSTEM -

GO to A2.

GASOLINE ENGINES

-- E-SERIES and

diagnose the engine does not crank symptom.

A2 IDENTIFY THE TYPE OF NO START

NOTE: The purpose of this test step is to identify intermittent no starts in order to

determine the proper repair procedure.

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

 Does the vehicle start?

Yes No

The vehicle has an intermittent no start. refer to PINPOINT TEST Z.

A3 DETERMINE THE THROTTLE TYPE

 Is the vehicle equipped with electronic throttle control?

GO to A3.

Yes No

GO to A5. GO to A4.

A4 CHECK THE VREF VOLTAGE TO TP SENSOR

 Key in OFF position.  TP Sensor connector disconnected.  Key ON, engine OFF.  Measure the voltage between:

( + ) TP Sensor

Connector,

Harness Side

( - ) TP Sensor

Connector,

Harness Side

VREF SIGRTN

 Is the voltage between 4.5 - 5.5 V?

Yes No

GO to A6. refer to PINPOINT TEST C.

A5 CHECK VREF VOLTAGE TO ETBTPS SENSOR

 Key in OFF position.  ETBTPS connector disconnected.  Key ON, engine OFF.  Measure the voltage between:

( + ) ETBTPS

Connector,

Harness Side

( - ) ETBTPS

Connector,

Harness Side

ETCREF ETCRTN

 Is the voltage between 4.5 - 5.5 V?

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Yes No

GO to A6. refer to PINPOINT TEST C.

A6 CHECK THE FLASH EEPROM PROGRAMMING SIGNAL (FEPS) CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS

 Key in OFF position.  TP Sensor connector connected.  ETBTPS connector connected.  Key ON, engine OFF.  Measure the voltage between:

( + ) DLC,

Harness Side

FEPS - Pin 13

 Is the voltage less than 9 V?

( - ) Vehicle

Battery

Negative terminal

Yes No

GO to A7.

A7 CHECK THE RPM IN THE PCM

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

NOTE: Connect the scan tool to a reliable voltage source that is powered with the key

in the START position (such as directly to the vehicle battery). Also verify that the vehicle battery is fully charged.

NOTE: Normal engine cranking speed is between 150 RPM and 350 RPM.

 Access the PCM and monitor the RPM PID.  Crank the engine while viewing the RPM PID.  Is the RPM between 150 RPM - 350 RPM?

Yes No

For base engine concerns, REFER to the ENGINE -

4.6L AND 5.4L -- E-SERIES - General

GO to A8.

Information and diagnose difficult starting symptom. For all others, GO to JD2.

A8 CHECK FOR CKP AND CMP SYNCHRONIZATION

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

 Access the PCM and monitor the SYNC PID.  Crank the engine while viewing the SYNC PID.  Does the SYNC PID read YES?

Yes No

GO to A9. GO to JD2.

A9 CHECK THE PCM DRIVER SIGNAL TO THE COILS

NOTE: Test lamp bulb filament wattages vary widely. The intensity and duration of

blinking depends on the test lamp being used.

 Connect a test lamp between B+ and each coil driver circuit at the harness connector.  Crank the engine.  Does the test lamp blink consistently for each coil driver (1 blink per engine revolution)?

Yes No

GO to A10.

A10 CHECK THE FUEL PRESSURE

For coil-on-plug (COP) ignition testing, GO to JB2. For coil pack ignition testing, GO to JC2.

WARNING: The fuel system remains pressurized when the engine is not running. To

prevent injury or fire, use caution when working on the fuel system. Refer to the fuel system WARNING information at the beginning of

Pinpoint Test HC. Failure to follow these instructions may result in personal injury.

NOTE: While activating the fuel pump on an electronic returnless fuel system a brief

pressure spike may occur.

 Key in OFF position.  Relieve the fuel pressure. Refer to the FUEL SYSTEM - GENERAL INFORMATION - GASOLINE

AND DIESEL -- E-SERIES for the Fuel System Pressure Release procedure.

 Connect the fuel pressure gauge to the Schrader valve using the appropriate fuel pressure test hose and

adaptor.

 Key ON, engine OFF.  Enter output test mode. Refer toOUTPUT TEST MODE (OTM) .  Activate the fuel pump to obtain maximum fuel pressure.  Is the fuel pressure within specification (refer to the fuel pressure chart in Pinpoint Test HC)?

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Yes No

GO to A11. refer to PINPOINT TEST HC.

A11 CHECK THE FUEL PRESSURE LEAKDOWN

 Key ON, engine OFF.  Enter output test mode. Refer toOUTPUT TEST MODE (OTM) .  Activate the fuel pump to obtain maximum fuel pressure.  Exit output test mode.  Monitor the fuel pressure.  Verify the fuel pressure remains within 34 kPa (5 psi) of the maximum pressure for 1 minute after turning

the pump off.

 Does fuel pressure remain within 34 kPa (5 psi)?

Yes No

GO to A12. refer to PINPOINT TEST HC.

A12 CHECK THE FUEL INJECTORS FOR VOLTAGE

NOTE: A no start condition typically exists only if greater than half of the fuel injectors

are without voltage. Check at least 2 fuel injectors, 1 on each bank on V type engines.

 Key in OFF position.  Disconnect 2 fuel injectors.  Key ON, engine OFF.  Measure the VPWR voltage at each fuel injector harness connector.  Is the voltage greater than 10 volts?

Yes No

GO to A13.

A13 CHECK THE FUEL INJECTORS' ABILITY TO DELIVER FUEL

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

 Cycle the key several times to charge the fuel system.  Disable the fuel pump.  Monitor the fuel pressure gauge while cranking the engine for at least 5 seconds.  Is there a pressure drop greater than 34 kPa (5 psi) while cranking the engine?

Yes No

The electronic engine control (EEC) system is not

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

the cause of the no start. RETURN to the SYMPTOM CHARTS article,

GO to A14.

Symptom Charts for further direction.

A14 CHECK FOR CORRECT PCM OPERATION

 Disconnect all the PCM connectors.  Visually inspect for:

 pushed out pins

 corrosion  Connect all the PCM connectors and make sure they seat correctly.  Carry out the PCM self-test and verify the concern is still present.  Is the concern still present?

Yes No

INSTALL a new PCM. REFER toFLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming the VID Block for a

The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Replacement PCM.

PINPOINT TEST B: POWERTRAIN CONTROL MODULE (PCM) POWER RELAY

NOTE: The IGN START/RUN and ground circuits, or the B+ and VPWR circuits may be

reversed in the harness connector. Refer to the Wiring Diagrams article Electronic Engine Control Cell for schematic and connector information.

This pinpoint test is intended to diagnose the following:

 harness circuits: B+, IGN START/RUN, INJPWRM, ISP-R, PCMRC, VPWR and GND  PCM power relay (12A646)  PCM (12A650)

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 7: Injector (INJ) Connector Courtesy of FORD MOTOR CO.

2008 Ford Edge SE

Vehicle Connector Pin Circuit

Fusion 3.0L,

A 1 VPWR

Milan 3.0L All other vehicles A 2 VPWR

Fig. 8: Powertrain Control Module Power (PCM Power) Relay Connector Courtesy of FORD MOTOR CO.

- A

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 9: Powertrain Control Module Power (PCM Power) Relay Connector - B Courtesy of FORD MOTOR CO.

Fig. 10: Powertrain Control Module Power (PCM Power) Relay Connector - C Courtesy of FORD MOTOR CO.

Vehicle Connector Pin Circuit

Crown Victoria, Escape/Mariner, Grand Marquis

Expedition, F-Super Duty, Fusion,

A 5

2 1 3

B 87

86 30, 85

VPWR GND IGN START/RUN B+

VPWR PCMRC

B+ Milan, MKZ, Navigator, Sable, Taurus, Taurus X

Explorer, Explorer Sport Trac, Mountaineer

F-150, Mark LT

Focus A 3

B 87

85 30, 86

A 5

1 2, 3

VPWR

PCMRC

B+

VPWR

PCMRC

B+

VPWR

PCMRC

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

1, 5 B+

Mustang C 87

85 30, 86

All other vehicles B 87

85 86 30

VPWR

PCMRC

B+

VPWR

GND

IGN START/RUN

B+

Vehicle Connector Pin Circuit

Edge, MKX, Sable, Taurus,

190 Pin B33

B51, B52, B53 B7 B8

INJPWRM VPWR ISP-R PCMRC

Taurus X Escape/Mariner 150 (50-50-50) Pin B35, B36 VPWR Expedition,

Navigator

Explorer, Explorer Sport Trac, Mountaineer

F-150 4.6L, F-150 5.4L, Mark LT

F-150 4.2L 190 Pin B33

F-Super Duty 170 Pin E23

Focus 190 Pin B21

Fusion, Milan, MKZ

Mustang 170 Pin E23

140 Pin B33

B51, B52, B53 B7 B8

170 Pin B35, B36

B46 B37

190 Pin B51, B52, B53

B17 B40

B51, B52, B53 B17 B40

B35, B36 B31 B37

B67, B68 B42 B38

140 Pin B45

B51, B52 B37 B35

B35, B36 B46

INJPWRM VPWR ISP-R PCMRC

VPWR ISP-R PCMRC

INJPWRM VPWR ISP-R PCMRC

INJPWRM VPWR ISP-R

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

B37 PCMRC

All other vehicles 170 Pin B35, B36 VPWR

B1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

 Is DTC P0685, P0689, or P0690 present?

Yes No

For DTCs P0685 or P0690, GO to B8. For DTC P0689, GO to B11.

B2 CHECK THE B+ AND IGN START/RUN VOLTAGE TO PCM POWER RELAY

 Key in OFF position.  PCM Power Relay connector disconnected.

GO to B2.

 Key ON, engine OFF.  Measure the voltage between:

( + ) PCM

Power Relay

Connector,

( - )

Harness Side

B+ Ground IGN

START/RUN

 Are the voltages greater than 10 V?

Ground

Yes No

For Crown Victoria, Grand Marquis, E-Series, Escape/Mariner, Ranger, and Town Car, GO to B6. For all others, GO to B3

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

B3 CHECK THE PCMRC CIRCUIT FOR AN OPEN IN THE HARNESS

 Key in OFF position.  PCM connector disconnected.  Measure the resistance between:

( + ) PCM

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Power Relay

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

PCMRC PCMRC

 Is the resistance less than 5 ohms?

Yes No

GO to B4.

B4 CHECK THE PCMRC CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS

 Key ON, engine OFF.  Measure the voltage between:

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

( + ) PCM

Connector,

( - )

Harness Side

PCMRC Ground

 Is any voltage present?

Yes No

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

B5 CHECK THE ISP-R VOLTAGE AT THE PCM HARNESS CONNECTOR

 Key in OFF position.  PCM Power Relay connector connected.  Key ON, engine OFF.  Measure the voltage between:

GO to B5.

( + ) PCM

Connector,

( - )

Harness Side

ISP-R Ground

 Is the voltage greater than 10 V?

GO to B7.

Yes No

REPAIR the open circuit. CLEAR the DTCs.

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REPEAT the self-test.

B6 CHECK THE PCM POWER RELAY GROUND CIRCUIT FOR AN OPEN

 Measure the voltage between:

( + ) PCM

Power Relay

Connector,

Harness Side

( - ) PCM

Power Relay

Connector,

Harness Side

B+ GND

 Is the voltage greater than 10 V?

Yes No

GO to B7.

B7 CHECK FOR AN OPEN VPWR CIRCUIT BETWEEN THE PCM AND POWER RELAY

 Key in OFF position.  PCM connector disconnected.  Measure the resistance between:

( + ) PCM

Power Relay

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

VPWR VPWR

 Is the resistance less than 5 ohms?

Yes No

INSTALL a new PCM Power relay. CLEAR the DTCs. REPEAT the self-test.

B8 DTCS P0685 OR P0690: CHECK THE PCMRC CIRCUIT FOR A SHORT TO GROUND IN THE HARNESS

 Key in OFF position.  PCM Power Relay connector disconnected.  PCM connector disconnected.  Measure the resistance between:

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

( + ) PCM

Connector,

( - )

Harness Side

PCMRC Ground

 Is the resistance greater than 10K ohms?

Yes No

GO to B9.

B9 CHECK THE ISP-R CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS

 Key in OFF position.  Measure the voltage between:

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

( + ) PCM

Connector,

( - )

Harness Side

ISP-R Ground

 Is any voltage present?

Yes No

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

B10 CHECK THE INJPWRM CIRCUIT FOR AN OPEN IN THE HARNESS

 INJ connector disconnected.  Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) INJ

Connector,

Harness Side

GO to B10.

INJPWRM VPWR

 Is the resistance less than 5 ohms?

Yes No

GO to B12.

B11 DTC P0689: CHECK THE ISP-R VOLTAGE AT THE PCM HARNESS CONNECTOR

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

 Key in OFF position.  PCM connector disconnected.  Key ON, engine OFF.  Measure the voltage between:

( + ) PCM

Connector,

( - )

Harness Side

ISP-R Ground

 Is the voltage greater than 10 V?

Yes No

GO to B12.

2008 Ford Edge SE

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

B12 CHECK FOR CORRECT PCM OPERATION

 Key in OFF position.  Disconnect all the PCM connectors.  Visually inspect for:

 pushed out pins

 corrosion  Connect all the PCM connectors and make sure they seat correctly.  Carry out the PCM self-test and verify the concern is still present.  Is the concern still present?

Yes No

INSTALL a new PCM. REFER toFLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming the VID Block for a

The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Replacement PCM.

PINPOINT TEST C: REFERENCE VOLTAGE (VREF)

WARNING: Crown Victoria Police Interceptor vehicles equipped with fire suppression

system, refer to part 419-03 for Important Safety Warnings. Failure to follow these instructions may result in personal injury.

This pinpoint test is intended to dia

nose the following:

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

 harness circuits: ETCREF, ETCRTN, SIGRTN and VREF  accelerator pedal position (APP) sensor (9F836)  air conditioning pressure (ACP) transducer sensor (19D594)  differential pressure feedback exhaust gas recirculation (EGR) sensor (9J460)  EGR system module (ESM) (9Y456)  fuel rail pressure temperature (FRPT) sensor (9G756)  fuel tank pressure (FTP) sensor (9C052)  manifold absolute pressure (MAP) sensor (9F479)  power steering pressure (PSP) sensor (3N824)  throttle position (TP) sensor (9B989)  powertrain control module (PCM) (12A650)

Fig. 11: Accelerator Pedal Position (APP) Sensor Connector Courtesy of FORD MOTOR CO.

- A

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 12: Accelerator Pedal Position (APP) Sensor Connector - B Courtesy of FORD MOTOR CO.

Fig. 13: Accelerator Pedal Position (APP) Sensor Connector Courtesy of FORD MOTOR CO.

Vehicle Connector Pin Circuit

Focus A 3, 4

1, 6

Fusion, Milan,

B 6, 9

10, 8

MKZ All other vehicles C 1, 3

6, 7

- C

ETCRTN ETCREF

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 14: Air Conditioning Pressure (ACP) Transducer Sensor Connector - A Courtesy of FORD MOTOR CO.

Fig. 15: Barometric Pressure (BARO) Sensor Connector Courtesy of FORD MOTOR CO.

Vehicle Connector Pin Circuit

Edge, Fusion,

A 1

2 Milan, MKX, MKZ

All other vehicles B 1

SIGRTN VREF

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 16: Differential Pressure Feedback EGR Sensor Connector - A Courtesy of FORD MOTOR CO.

Fig. 17: Differential Pressure Feedback EGR Sensor Connector Courtesy of FORD MOTOR CO.

Vehicle Connector Pin Circuit

Vehicles equipped with a tube mounted

A 1

2 differential pressure feedback EGR sensor

All other vehicles B 3

- B

VREF SIGRTN

Page 22

2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 18: EGR System Module (ESM) Connector Courtesy of FORD MOTOR CO.

Pin Circuit

6 SIGRTN (Signal Return) 2 VREF (Reference Voltage)

Fig. 19: Electronic Throttle Body Throttle Position Sensor (ETBTPS) Connector - A Courtesy of FORD MOTOR CO.

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 20: Electronic Throttle Body Throttle Position Sensor (ETBTPS) Connector - B Courtesy of FORD MOTOR CO.

Fig. 21: Electronic Throttle Body Throttle Position Sensor (ETBTPS) Connector Courtesy of FORD MOTOR CO.

Vehicle Connector Pin Circuit

E-Series 4.6L, Edge,

A 2

ETCRTN

ETCREF F-150 4.2L, F-150 4.6L, Focus, MKX, MKZ, Sable, Taurus,

- C

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Taurus X Fusion 2.3L,

B 3

Milan 2.3L Fusion 3.0L,

B 4

Milan 3.0L All other vehicles C 3

2008 Ford Edge SE

ETCRTN

ETCREF

ETCRTN

ETCREF

ETCRTN

ETCREF

Fig. 22: Fuel Rail Pressure Temperature (FRPT) Sensor Connector Courtesy of FORD MOTOR CO.

Pin Circuit

2 VREF (Reference Voltage) 4 SIGRTN (Signal Return)

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 23: Differential Pressure Feedback EGR Sensor Connector - A Courtesy of FORD MOTOR CO.

Pin Circuit

1 VREF (Reference Voltage) 2 SIGRTN (Signal Return)

Fig. 24: Manifold Absolute Pressure (MAP) Sensor Connector - A Courtesy of FORD MOTOR CO.

Fig. 25: Manifold Absolute Pressure (MAP) Sensor Connector

- B

Courtesy of FORD MOTOR CO.

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 26: Manifold Absolute Pressure (MAP) Sensor Connector - C Courtesy of FORD MOTOR CO.

Vehicle Connector Pin Circuit

Escape/Mariner 3.0L A 3

Fusion 3.0L, Milan 3.0L

B 2

All other vehicles C 4

SIGRTN VREF

Fig. 27: Barometric Pressure (BARO) Sensor Connector Courtesy of FORD MOTOR CO.

Pin Circuit

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

2 VREF (Reference Voltage) 1 SIGRTN (Signal Return)

Fig. 28: Throttle Position (TP) Sensor Connector - A Courtesy of FORD MOTOR CO.

Fig. 29: Throttle Position (TP) Sensor Connector

- B

Courtesy of FORD MOTOR CO.

Vehicle Connector Pin Circuit

Escape/Mariner 2.3L, Ranger 2.3L

A 3

All other vehicles B 1

VREF SIGRTN

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

For PCM connector views or reference values, refer to the REFERENCE VALUES article.

Vehicle Connector Pin Circuit

Crown Victoria, Grand Marquis, Mustang, Town Car

E-Series, F-Super Duty

Escape/Mariner 150 (50-50-50) Pin B35, B36

Expedition, Navigator

Explorer, Explorer Sport Trac, Mountaineer

F-150, Mark LT

Focus 190 Pin B67, B68

Fusion, Milan, MKZ

Ranger 170 Pin B35, B36

All other vehicles 190 Pin B51, B52, B53

170 Pin B35, B36

B41, E58, T41 B41, B6, E59 B40, E57 B24, B4, E66

170 Pin B35, B36

B41, E58, T41 B18, B6, E59 B40, E57 B16, B4, E66

B41, E41, T41 B40, E40

140 Pin B51, B52, B53

B58, E58 B59, B65, E59 E57 B21, B28, E66

170 Pin B35, B36

B41, E58, T41 B43, B6, E59 B40, E57 B24, B4, E66

190 Pin B51, B52, B53

B58, E58, T43 B58, B59, E59 B29, E57 B21, B28, E66

B58, E64, T40 B44, B60, E60 B52, B66, E63 B45, B61, E59

140 Pin B51, B52

B58, E58 B59, B60, E59 B33, E57 B21, B28, E66

B41, E58, T41 B40, E57

B58, E58

VPWR SIGRTN ETCRTN VREF ETCREF

VPWR SIGRTN VREF

VPWR SIGRTN ETCRTN VREF ETCREF

VPWR SIGRTN VREF

VPWR SIGRTN

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

B59, B65, E59 B29, B64 B21, B28, E66

ETCRTN VREF ETCREF

SENSORS CONNECTED TO VREF/ETCREF

Differential

Applications

TP or

ETC

APP

Pressure

Feedback EGR

FTP ACP PSPT FRPT MAP

or ESM

Crown Victoria/Grand

Marquis

ETC X X X X X

Edge/MKX ETC X X X Escape/Mariner - 2.3L TP X X X Escape/Mariner - 3.0L TP X X X X

E-Series - 4.6L/5.4L ETC X X X X

E-Series - 6.8L ETC X X X

Expedition/Navigator ETC X X

Explorer/Explorer Sport

Trac/Mountaineer

ETC X X X X

F-150 - 4.2L ETC X X X X F-150 - 4.6L ETC X X X X X

F-150 - 5.4L/Mark LT ETC X X X X

F-Super Duty ETC X X X

Focus ETC X X X X

Fusion/Milan/MKZ ETC X X X X

Mustang - 4.0L ETC X X X X X Mustang - 4.6L ETC X X X Mustang - 5.4L ETC X X X X

Ranger - 2.3L TP X X

Ranger - 3.0L/4.0L TP X X

Taurus/Taurus X/Sable ETC X X X

Town Car ETC X X X X X

NOTE:

 ETCREF and ETCRTN are internally bussed within the PCM and are

dedicated circuits for the APP sensor and the electronic throttle body TP sensor only. Refer to the Wiring Diagrams article Electronic Engine Controls Cell for schematic and connector information.

C1 CHECK THE REFERENCE VOLTAGE TO SIGRTN/ETCRTN

NOTE: Diagnostic trouble codes (DTCs) P0642 and P0643 are set due to VREF circuit

concerns only. When diagnosing DTC P0642 or P0643, follow the path for VREF

Page 30

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

concerns.

 Key in OFF position.  Disconnect the suspect sensor.  Key ON, engine OFF.  For ETCREF concerns.  Measure the voltage between:

2008 Ford Edge SE

( + ) Suspect

Sensor

Connector,

Harness Side

( - ) Suspect

Sensor

Connector,

Harness Side

ETCREF ETCRTN

 For VREF concerns.  Measure the voltage between:

( + ) Suspect

Sensor

Connector,

Harness Side

( - ) Suspect

Sensor

Connector,

Harness Side

VREF SIGRTN

 Is the voltage between 4.5 - 5.5 V?

Yes No

GO to C19. GO to C2.

C2 CHECK THE REFERENCE VOLTAGE TO GROUND

 For ETCREF concerns.  Measure the voltage between:

( + ) Suspect

Sensor

Connector,

( - )

Harness Side

ETCREF Ground

 For VREF concerns.  Measure the voltage between:

( + ) Suspect

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Sensor

Connector,

( - )

Harness Side

VREF Ground

 Is the voltage between 4.5 - 5.5 V?

Yes No

GO to C18. GO to C3.

C3 CHECK THE REFERENCE VOLTAGE WITH ALL SENSORS DISCONNECTED

NOTE: Refer to the Sensors Connected To VREF/ETCREF Chart at the beginning of this

pinpoint test and the Wiring Diagrams article Electronic Engine Controls Cell to identify the sensors connected to VREF/ETCREF.

 Key in OFF position.  Disconnect all of the sensors connected to the VREF/ETCREF circuit.  Key ON, engine OFF.  Measure the voltage at the sensor disconnected in C1.  For ETCREF concerns.  Measure the voltage between:

( + ) Suspect

Sensor

Connector,

( - )

Harness Side

ETCREF Ground

 For VREF concerns.  Measure the voltage between:

( + ) Suspect

Sensor

Connector,

( - )

Harness Side

VREF Ground

 Is the voltage between 4.5 - 5.5 V?

Yes No

For electronic throttle control (ETC) concerns, GO

to C8

GO to C4.

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

For all other VREF concerns, GO to C10.

C4 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR AN OPEN

 Key in OFF position.  Disconnect the PCM.  For ETCREF concerns.  Measure the resistance between:

( + ) Suspect

Sensor

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

ETCREF ETCREF

 For VREF concerns.  Measure the resistance between:

( + ) Suspect

Sensor

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

VREF VREF

 Is the resistance less than 5 ohms?

Yes No

GO to C5.

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

C5 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO GROUND

 For ETCREF concerns.  Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

ETCREF ETCRTN

 Measure the resistance between:

( + ) PCM

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Connector,

Harness Side

( - )

ETCREF Ground

 For VREF concerns.  Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

VREF SIGRTN

 Measure the resistance between:

( + ) PCM

Connector,

( - )

Harness Side

VREF Ground

 Are the resistances greater than 10K ohms?

Yes No

GO to C6.

C6 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO VPWR

 For ETCREF concerns.  Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

ETCREF VPWR

 For VREF concerns.  Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

VREF VPWR

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

 Is the resistance greater than 10K ohms?

Yes No

GO to C7.

C7 CHECK THE REFERENCE VOLTAGE FOR A SHORT TO VOLTAGE

 Key ON, engine OFF.  For ETCREF concerns.  Measure the voltage between:

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

( + ) PCM

Connector,

( - )

Harness Side

ETCREF Ground

 For VREF concerns.  Measure the voltage between:

( + ) PCM

Connector,

( - )

Harness Side

VREF Ground

 Is any voltage present?

Yes No

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

C8 CHECK THE REFERENCE VOLTAGE WITH THE ELECTRONIC THROTTLE CONTROL CONNECTED

GO to C20.

NOTE: If this sensor was used for the ETCREF measurement in C3, GO to C9.

 Key in OFF position.  Connect the electronic throttle body throttle position sensor (ETBTPS).  Key ON, engine OFF.  Measure the voltage between:

( + ) Suspect

Sensor

( - )

Connector,

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Harness Side

ETCREF Ground

 Is the voltage between 4.5 - 5.5 V?

Yes No

INSTALL a new ETBTPS.

The concern is intermittent. refer to PINPOINT TEST Z.

REFER to the FUEL SYSTEM - GENERAL

INFORMATION - GASOLINE AND DIESEL -E-SERIES .

CLEAR the DTCs. REPEAT the self-test.

C9 CHECK THE REFERENCE VOLTAGE WITH THE APP SENSOR CONNECTED

 Key in OFF position.  Connect the APP sensor.  Key ON, engine OFF.  Measure the voltage between:

( + ) Suspect

Sensor

Connector,

( - )

Harness Side

ETCREF Ground

 Is the voltage between 4.5 - 5.5 V?

Yes No

INSTALL a new APP sensor.

The concern is intermittent. refer to PINPOINT TEST Z.

REFER to the ACCELERATION CONTROL E-SERIES . CLEAR the DTCs. REPEAT the self-test.

C10 CHECK THE REFERENCE VOLTAGE WITH THE TP SENSOR CONNECTED

NOTE: If this sensor was used for the VREF measurement in C3, GO to C11.

 Key in OFF position.  Connect the TP sensor.  Key ON, engine OFF.  Measure the voltage between:

( + ) Suspect

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Sensor

Connector,

( - )

Harness Side

VREF Ground

 Is the voltage between 4.5 - 5.5 V?

Yes No

INSTALL a new TP sensor.

For additional sensors disconnected, GO to C11. For no additional sensors disconnected, refer to PINPOINT TEST Z.

REFER to the ELECTRONIC ENGINE

CONTROLS - GASOLINE ENGINES -- ESERIES .

CLEAR the DTCs. REPEAT the self-test.

C11 CHECK THE REFERENCE VOLTAGE WITH THE DIFFERENTIAL PRESSURE FEEDBACK EGR SENSOR CONNECTED

NOTE: If the vehicle is not equipped with a differential pressure feedback EGR sensor

or if this sensor was used for the VREF measurement in C3, GO to C12.

 Key in OFF position.  Differential Pressure Feedback EGR Sensor connector connected.  Key ON, engine OFF.  Measure the voltage between:

( + ) Suspect

Sensor

Connector,

( - )

Harness Side

VREF Ground

 Is the voltage between 4.5 - 5.5 V?

Yes No

For additional sensors disconnected, GO to C12. For no additional sensors disconnected, refer to PINPOINT TEST Z.

INSTALL a new Differential Pressure Feedback EGR sensor. REFER to the ENGINE EMISSION CONTROL -- E-SERIES . CLEAR the DTCs. REPEAT the self-test.

C12 CHECK THE REFERENCE VOLTAGE WITH THE ESM CONNECTED

NOTE: If the vehicle is not equipped with an ESM or if this sensor was used for the

VREF measurement in C3, GO to C13

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

 Key in OFF position.  Connect the ESM.  Key ON, engine OFF.  Measure the voltage between:

( + ) Suspect

Sensor

Connector,

( - )

Harness Side

VREF Ground

 Is the voltage between 4.5 - 5.5 V?

Yes No

For additional sensors disconnected, GO to C13. For no additional sensors disconnected, refer to PINPOINT TEST Z.

INSTALL a new ESM. REFER to the ENGINE EMISSION CONTROL -

- E-SERIES . CLEAR the DTCs. REPEAT the self-test.

C13 CHECK THE REFERENCE VOLTAGE WITH THE MAP SENSOR CONNECTED

NOTE: If the vehicle is not equipped with a MAP sensor or if this sensor was used for

the VREF measurement in C3, GO to C14.

 Key in OFF position.  Connect the MAP sensor.  Key ON, engine OFF.  Measure the voltage between:

( + ) Suspect

Sensor

Connector,

( - )

Harness Side

VREF Ground

 Is the voltage between 4.5 - 5.5 V?

Yes No

INSTALL a new MAP sensor.

For additional sensors disconnected, GO to C14. For no additional sensors disconnected, refer to

PINPOINT TEST Z

REFER to the ELECTRONIC ENGINE

CONTROLS - GASOLINE ENGINES -- ESERIES .

CLEAR the DTCs. REPEAT the self-test.

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

C14 CHECK THE REFERENCE VOLTAGE WITH THE FRPT SENSOR CONNECTED

NOTE: If the vehicle is not equipped with a FRPT sensor or if this sensor was used for

the VREF measurement in C3, GO to C15.

 Key in OFF position.  Connect the FRPT sensor.  Key ON, engine OFF.  Measure the voltage between:

( + ) Suspect

Sensor

Connector,

( - )

Harness Side

VREF Ground

 Is the voltage between 4.5 - 5.5 V?

Yes No

For additional sensors disconnected, GO to C15. For no additional sensors disconnected, refer to

PINPOINT TEST Z.

C15 CHECK THE REFERENCE VOLTAGE WITH THE FTP SENSOR CONNECTED

INSTALL a new FRPT sensor. REFER to the

ELECTRONIC ENGINE CONTROLS GASOLINE ENGINES -- E-SERIES .

CLEAR the DTCs. REPEAT the self-test.

NOTE: If the vehicle is not equipped with a FTP sensor or if this sensor was used for

the VREF measurement in C3, GO to C16.

 Key in OFF position.  Connect the FTP sensor.  Key ON, engine OFF.  Measure the voltage between:

( + ) Suspect

Sensor

Connector,

( - )

Harness Side

VREF Ground

 Is the voltage between 4.5 - 5.5 V?

Yes No

Page 39

2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

INSTALL a new FTP sensor.

For additional sensors disconnected, GO to C16. For no additional sensors disconnected, refer to PINPOINT TEST Z.

REFER to the EVAPORATIVE EMISSIONS --

E-SERIES EVAPORATIVE EMISSIONS -- ESERIES .

CLEAR the DTCs. REPEAT the self-test.

C16 CHECK THE REFERENCE VOLTAGE WITH THE ACP TRANSDUCER SENSOR CONNECTED

NOTE: If the vehicle is not equipped with an ACP transducer sensor or if this sensor

was used for the VREF measurement in C3, GO to C17

 Key in OFF position.  Connect the ACP transducer sensor.  Key ON, engine OFF.  Measure the voltage between:

( + ) Suspect

Sensor

Connector,

( - )

Harness Side

VREF Ground

 Is the voltage between 4.5 - 5.5 V?

Yes No

For additional sensors disconnected, GO to C17. For no additional sensors disconnected, refer to

PINPOINT TEST Z.

C17 CHECK THE REFERENCE VOLTAGE WITH THE PSP SENSOR CONNECTED

 Key in OFF position.  Connect the PSP sensor.  Key ON, engine OFF.  Measure the voltage between:

INSTALL a new Air Conditioning Pressure (ACP) Transducer Sensor. CLEAR the DTCs. REPEAT the self-test.

( + ) Suspect

Sensor

Connector,

( - )

Harness Side

VREF Ground

 Is the voltage between 4.5 - 5.5 V?

Page 40

2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Yes No

The concern is intermittent. refer to PINPOINT TEST Z.

C18 CHECK THE SIGRTN OR ETCRTN CIRCUIT(S) FOR AN OPEN

INSTALL a new PSP sensor. CLEAR the DTCs. REPEAT the self-test.

NOTE: Refer to the Wiring Diagrams article Electronic Engine Controls Cell for specific

vehicle application and pin locations.

 Key in OFF position.  Disconnect the PCM.  For ETCRTN concerns.  Measure the resistance between:

( + ) Suspect

Sensor

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

ETCRTN ETCRTN

 For SIGRTN concerns.  Measure the resistance between:

( + ) Suspect

Sensor

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

SIGRTN SIGRTN

 Is the resistance less than 5 ohms?

Yes No

GO to C20.

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

C19 CHECK THE SUSPECT SENSOR FOR AN INTERNAL SHORT

 Clear the KOEO, KOER, and continuous DTCs.  Key in OFF position.  Connect the suspect sensor.  Key ON, engine OFF.  Carry out the PCM self-test.

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Yes No

INSTALL a new sensor for the sensor in question. CLEAR the DTCs. REPEAT the self-test.

C20 CHECK FOR CORRECT PCM OPERATION

 Disconnect all the PCM connectors.  Visually inspect for:

 pushed out pins

 corrosion  Connect all the PCM connectors and make sure they seat correctly.  Carry out the PCM self-test and verify the concern is still present.  Is the concern still present?

The concern is intermittent. refer to PINPOINT TEST Z.

Yes No

INSTALL a new PCM. REFER toFLASH ELECTRICALLY

ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming the VID

The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Block for a Replacement PCM.

PINPOINT TEST DA: INTAKE AIR TEMPERATURE (IAT) SENSOR

This pinpoint test is intended to diagnose the following:

 integrated mass air flow/intake air temperature (MAF/IAT) sensor (12B579)  harness circuits: IAT and SIGRTN  powertrain control module (PCM) (12A650)

Voltage values calculated for VREF equal 5 volts. These values can vary by 15% due to sensor and VREF variations.

Page 42

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 30: Temperature Sensor Temperature To Voltage Graph Courtesy of FORD MOTOR CO.

TEMPERATURE SENSOR VOLTAGE AND RESISTANCE SPECIFICATIONS

Temperature Temperature Sensor Values

°C °F Voltage Resistance (K ohms)

120 248 0.28 1.18 110 230 0.36 1.55 100 212 0.47 2.07

90 194 0.61 2.80 80 176 0.80 3.84 70 158 1.05 5.37 60 140 1.37 7.70 50 122 1.77 10.97 40 104 2.23 16.15 30 86 2.74 24.27 20 68 3.26 37.30 10 50 3.73 58.75

0 32 4.14 95.85

-10 14 4.45 160.31

Page 43

2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 31: Electronic Throttle Body Throttle Position Sensor (ETBTPS) Connector - A Courtesy of FORD MOTOR CO.

Pin Circuit

4 MAF RTN (Mass Air Flow Return) 2 SIGRTN (Signal Return) 1 IAT (Intake Air Temperature)

For PCM connector views or reference values, refer to the REFERENCE VALUES article.

Vehicle Connector Pin Circuit

Crown Victoria, Grand Marquis,

170 Pin T41

E22

SIGRTN IAT

Town Car Edge,

MKX,

190 Pin B58

B43

SIGRTN

IAT Sable, Taurus, Taurus X

Escape/Mariner 3.0L 150 (50-50-50)

Escape/Mariner 2.3L 150 (50-50-50)

Expedition,

140 Pin B58

Fusion,

B41 B20

B41 B39

B43

SIGRTN

IAT

SIGRTN

IAT

SIGRTN

IAT Milan, MKZ, Navigator

F-150, Mark LT

190 Pin E58

E22

SIGRTN

IAT

Page 44

2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Focus 190 Pin B58

B47

All other vehicles 170 Pin E58

E22

DA1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

 Are DTCs P0111, P0112, P0113, P0114, or P1112 present?

SIGRTN

IAT

SIGRTN

IAT

Yes No

For DTC P0111, GO to DA12. For KOEO and KOER DTC P0112, GO to DA6 For KOEO and KOER DTC P0113, GO to DA2 For continuous memory DTCs P0112, P0113 or

. .

For all others, GO toDIAGNOSTIC TROUBLE

CODE (DTC) CHARTS AND DESCRIPTIONS . P1112, GO to DA9. For DTC P0114, GO to DA9.

DA2 DTC P0113: CHECK THE IAT SIGNAL CIRCUIT

NOTE: The DTC indicates the sensor signal is greater than the self-test maximum.

 MAF/IAT Sensor connector disconnected.  Key ON, engine OFF.  Measure the voltage between:

( + ) MAF/IAT

Sensor

Connector,

( - )

Harness Side

IAT - Pin 1 Ground

 Is the voltage between 4.5 - 5.5 V?

Yes No

GO to DA3. GO to DA4.

DA3 CHECK THE IAT SENSOR RESISTANCE

 Key in OFF position.  Measure the resistance between:

( + ) MAF/IAT

Sensor

Connector,

( - ) MAF/IAT

Sensor

Connector,

Page 45

2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Component

Side

Component

Side

IAT - Pin 1 SIGRTN - Pin 2

 Is the resistance between 1K - 500K ohms?

Yes No

INSTALL a new MAF/IAT sensor. REFER to the GO to DA4.

ELECTRONIC ENGINE CONTROLS -

GASOLINE ENGINES -- E-SERIES .

CLEAR the DTCs. REPEAT the self-test.

DA4 CHECK THE SIGNAL AND SIGRTN CIRCUITS FOR AN OPEN IN THE HARNESS

 PCM connector disconnected.  Measure the resistance between:

( + ) MAF/IAT

Sensor

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

IAT - Pin 1 IAT SIGRTN - Pin 2 SIGRTN

 Are the resistances less than 5 ohms?

Yes No

GO to DA5.

DA5 CHECK THE SIGNAL FOR A SHORT TO VOLTAGE IN HARNESS

 Key in OFF position.  PCM connector disconnected.  Key ON, engine OFF.  Measure the voltage between:

REPAIR the open circuit. CLEAR the DTCs.

REPEAT the self-test.

( + ) MAF/IAT

Sensor

Connector,

( - )

Harness Side

IAT - Pin 1 Ground

Page 46

2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Yes No

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

DA6 DTC P0112: SIMULATE AN OPPOSITE SIGNAL TO THE PCM

GO to DA14.

NOTE: The DTC indicates the sensor signal is less than the self-test minimum.

 MAF/IAT Sensor connector disconnected.  Key ON, engine OFF.  Access the PCM and monitor the IAT PID.  Is the voltage greater than 4.2 V?

Yes No

INSTALL a new MAF/IAT sensor. REFER to the

ELECTRONIC ENGINE CONTROLS GASOLINE ENGINES -- E-SERIES .

GO to DA7. CLEAR the DTCs. REPEAT the self-test.

DA7 CHECK THE IAT CIRCUIT FOR A SHORT TO MAF RTN

 Key in OFF position.  PCM connector disconnected.  Measure the resistance between:

( + ) MAF/IAT

Sensor

Connector,

Harness Side

IAT - Pin 1

 Is the resistance less than 5 ohms?

( - ) MAF/IAT

Sensor

Connector,

Harness Side

MAF RTN - Pin 4

Yes No

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

DA8 CHECK THE IAT CIRCUIT FOR A SHORT TO GROUND

GO to DA8.

 PCM connector disconnected.  Measure the resistance between:

Page 47

2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

( + ) PCM

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

IAT SIGRTN

 Measure the resistance between:

( + ) PCM

Connector,

Harness Side

IAT

 Is the resistance greater than 10K ohms?

( - ) 12 Volt

Vehicle Battery

Negative terminal

Yes No

GO to DA14.

DA9 SELF-TEST DTCS P0112, P0113, P0114 OR P1112: INTERMITTENT CHECK

REPAIR the short circuit. CLEAR the DTCs.

REPEAT the self-test.

 Key ON, engine OFF.  Access the PCM and monitor the IAT PID.  While observing the PID, carry out the following:

 Tap on the sensor to simulate road shock  Wiggle the sensor connector

 Is there a large change in the voltage reading?

Yes No

DISCONNECT and INSPECT the connector. If OK, INSTALL a new MAF/IAT sensor. REFER

to the ELECTRONIC ENGINE CONTROLS GASOLINE ENGINES

-- E-SERIES .

GO to DA10. CLEAR the DTCs. REPEAT the self-test.

DA10 CHECK THE ELECTRONIC ENGINE CONTROL (EEC) WIRING HARNESS

 Access the PCM and monitor the IAT PID.  While observing the PID, wiggle, shake, and bend small sections of the wiring harness while working

from the sensor to the PCM.

 Is there a large change in the voltage reading?

Yes No

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2008 Ford Edge SE

2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

ISOLATE the concern. REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test.

DA11 CHECK THE PCM AND VEHICLE HARNESS CONNECTORS

 Key in OFF position.  PCM connector disconnected.  MAF/IAT Sensor connector disconnected.  Are the connectors and terminals OK?

GO to DA11.

Yes No

The concern is not present at this time. DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO toDIAGNOSTIC TROUBLE CODE (DTC)

REPAIR as necessary.

CLEAR the DTCs. REPEAT the self-test.

CHARTS AND DESCRIPTIONS .

DA12 DTC P0111: CHECK THE RESISTANCE OF THE IAT SENSOR WITH THE ENGINE OFF

NOTE: Verify the engine temperature is at ambient temperature before continuing with

this test.

 Key in OFF position.  IAT Sensor connector disconnected.  Measure the resistance between:

( + ) IAT

Sensor

Connector,

Component

Side

( - ) IAT Sensor

Connector,

Component

Side

IAT SIGRTN

 Refer to the chart at the beginning of this test for the resistance specifications.  Is the resistance within specification?

Yes No

INSTALL a new IAT sensor. REFER to the GO to DA13.

ELECTRONIC ENGINE CONTROLS

GASOLINE ENGINES

CLEAR the DTCs. REPEAT the self-test.

-- E-SERIES .

DA13 DTC P0111: CHECK THE RESISTANCE OF THE IAT SENSOR

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

NOTE: Verify the engine is at operating temperature before taking the IAT reading.

 IAT Sensor connector connected.  Run the engine until the engine temperature stabilizes.  Key in OFF position.  IAT Sensor connector disconnected.  Measure the resistance between:

( + ) IAT

Sensor

Connector,

Component

Side

( - ) IAT Sensor

Connector,

Component

Side

IAT SIGRTN

 Refer to the chart at the beginning of this test for the resistance specifications.  Is the resistance within specification?

Yes No

The concern is not present at this time. CARRY OUT the OBD drive cycle to determine if fuel, HO2S, catalyst and misfire monitors can be executed. REFER to On Board Diagnostic (OBD) Drive Cycle.

INSTALL a new IAT sensor. REFER to the

ELECTRONIC ENGINE CONTROLS -

GASOLINE ENGINES -- E-SERIES .

CLEAR the DTCs. REPEAT the self-test. REPEAT the PCM self-test if necessary.

DA14 CHECK FOR CORRECT PCM OPERATION

 Disconnect all the PCM connectors.  Visually inspect for:

 pushed out pins

 corrosion  Connect all the PCM connectors and make sure they seat correctly.  Carry out the PCM self-test and verify the concern is still present.  Is the concern still present?

Yes No

INSTALL a new PCM. REFER toFLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming the VID Block for a

The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Replacement PCM.

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

PINPOINT TEST DC: MASS AIR FLOW (MAF) SENSO

This pinpoint test is intended to diagnose the following:

 mass air flow (MAF) sensor (12B579)  harness circuits: MAF SIG, MAF RTN, vehicle power (VPWR), power ground (PWRGND), IAT and

SIGRTN

 powertrain control module (PCM) (12A650)

Fig. 32: Electronic Throttle Body Throttle Position Sensor (ETBTPS) Connector - A Courtesy of FORD MOTOR CO.

Pin Circuit

1 IAT (Intake Air Temperature) 2 SIGRTN (Signal Return) 4 MAF RTN (Mass Air Flow Return) 3 MAF (Mass Air Flow) 5 PWRGND (Power Ground) 6 VPWR (Vehicle Power)

For PCM connector views or reference values, refer to the REFERENCE VALUES

article.

Vehicle Connector Pin Circuit

Edge, MKX,

190 Pin B41

B42

MAF

MAF RTN Sable, Taurus, Taurus X

Escape/Mariner 150 (50-50-50) Pin B32 MAF

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

B43 MAF RTN

Expedition, Fusion,

140 Pin B41

B42 Milan, MKZ, Navigator

F-150, Mark LT

190 Pin E25

E26 Focus 190 Pin B40

B41 All other vehicles 170 Pin E25

E26

DC1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

MAF MAF RTN

 Are DTCs P0102, P0103, P0104, P1100, or P1101 present?

Yes No

For KOER and continuous memory DTC P0102, P0104, GO to DC5. For DTC P0103, GO to DC21. For KOEO DTC P1101, GO to DC7. For KOER and continuous memory DTC P1101,

For all other symptoms without DTCs, GO to DC27.

GO to DC2. For continuous memory DTC P1100, GO to DC19.

DC2 DTC P1101: CHECK FOR MAF SENSOR CONTINUOUS MEMORY DTCS

 Retrieve continuous memory DTCs.  Is a continuous memory MAF DTC present with the KOER DTC P1101?

Yes No

GO to DC3. GO to DC5.

DC3 VERIFY CONTINUOUS MEMORY DTC P0102

 Is a continuous memory DTC P0102 present with the KOER DTC P1101?

Yes No

GO to DC5. GO to DC4.

DC4 VERIFY CONTINUOUS MEMORY DTC P0103

 Is a continuous memory DTC P0103 present with the KOER DTC P1101?

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Yes No

All other continuous memory DTCs: DISREGARD the current diagnostic trouble code

GO to DC21.

(DTC) at this time. DIAGNOSE the next DTC. GO toDIAGNOSTIC TROUBLE CODE (DTC)

CHARTS AND DESCRIPTIONS .

DC5 KOER AND CONTINUOUS MEMORY DTCS P0102, P0104 OR P1101: CHECK THE INTAKE AIR SYSTEM FOR LEAKS, OBSTRUCTIONS, AND DAMAGE

 Key in OFF position.  Check the air inlet system (air cleaner, housing, duct work) for obstructions or blockage.  Check for broken/loose air outlet tube clamps (throttle body and air cleaner assembly ends), cracks/holes

in the air outlet tube, and worn gaskets between the MAF sensor and the air cleaner assembly. Check the throttle body bore for sludge. Verify the MAF sensor is connected. Repair as necessary.

 Are there any concerns found during the visual inspection?

Yes No

REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test.

DC6 CHECK THE MAF PID

 Access the PCM and monitor the RPM PID.  Run the engine up to 1,500 RPM for 5 seconds, then bring it back to idle.  Access the PCM and monitor the MAF PID.  Is the voltage less than 0.23 V?

GO to DC6.

Yes No

GO to DC9. GO to DC7.

DC7 CHECK THE MAF SIGNAL SENT TO THE PCM

NOTE: DTC P1101 can be generated by a low charged vehicle battery or the garage

exhaust ventilation system. Charge the battery as necessary, then remove the ventilation system and properly vent to the outside atmosphere. Check the air inlet system (air cleaner, housing, duct work) for obstructions or blockage. Repeat the KOEO self-test.

 Key in OFF position.  MAF/IAT Sensor connector connected.  Key ON, engine OFF.  Access the PCM and monitor the MAF PID.

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 Is the voltage less than 0.2 V?

Yes No

GO to DC8. GO to DC9.

DC8 CHECK THE MAF SIGNAL SENT TO THE PCM

 Key ON, engine running.  Access the PCM and monitor the MAF PID.  Is the voltage between 0.46 - 2.44 V?

Yes No

Unable to identify the concern at this time. refer to PINPOINT TEST Z.

GO to DC9.

DC9 CHECK THE VPWR TO THE MAF SENSOR

 Key in OFF position.  MAF/IAT Sensor connector disconnected.  Key ON, engine OFF.  Measure the voltage between:

( + ) MAF/IAT

Sensor

Connector,

( - ) Vehicle

Battery

Harness Side

VPWR - Pin 6

 Is the voltage greater than 10 V?

Negative terminal

Yes No

GO to DC10.

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

DC10 CHECK THE PWRGND CIRCUIT TO THE MAF SENSOR

 Measure the voltage between:

( - ) MAF/IAT

( + ) Vehicle

Battery

Sensor

Connector,

Harness Side

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Positive terminal

 Is the voltage greater than 10 V?

PWRGND - Pin 5

Yes No

GO to DC11.

DC11 CHECK FOR SHORTS BETWEEN THE CIRCUITS IN THE MAF HARNESS

 Key in OFF position.  MAF/IAT Sensor connector disconnected.  PCM connector disconnected.  Measure the resistance between:

( + ) MAF/IAT

Sensor

Connector,

Harness Side

MAF - Pin 3

( - ) MAF/IAT

Sensor

Connector,

Harness Side

PWRGND - Pin 5

MAF RTN - Pin 4

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

MAF - Pin 3 SIGRTN - Pin 2 MAF - Pin 3 IAT - Pin 1

 Are the resistances greater than 10K ohms?

Yes No

GO to DC12.

DC12 CHECK THE MAF RTN CIRCUIT FOR AN OPEN IN THE HARNESS

 Measure the resistance between:

( + ) PCM

Connector,

Harness Side

MAF RTN

( - ) MAF/IAT

Sensor

Connector,

Harness Side

MAF RTN - Pin 4

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

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 Is the resistance less than 5 ohms?

Yes No

GO to DC13.

DC13 CHECK THE MAF RTN CIRCUIT FOR A SHORT TO PWRGND IN THE HARNESS

 Measure the resistance between:

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

( + ) MAF/IAT

Sensor

Connector,

Harness Side

( - ) MAF/IAT

Sensor

Connector,

Harness Side

MAF RTN - Pin 4PWRGND - Pin

 Is the resistance greater than 10K ohms?

Yes No

GO to DC14.

DC14 CHECK THE MAF CIRCUIT FOR A SHORT TO PWRGND IN THE PCM

 PCM connector connected.  Measure the resistance between:

( + ) MAF/IAT

Sensor

Connector,

Harness Side

MAF - Pin 3

( - ) MAF/IAT

Sensor

Connector,

Harness Side

PWRGND - Pin 5

REPAIR the short circuit to GND. CLEAR the DTCs. REPEAT the self-test.

 Is the resistance greater than 10K ohms?

Yes No

GO to DC15. GO to DC31.

DC15 CHECK THE MAF CIRCUIT VOLTAGE CYCLING INTEGRITY

 Key ON, engine OFF.  Access the PCM and monitor the MAF PID.

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 Connect a 5 amp fused jumper wire between the following:

Point A

MAF/IAT

Sensor

Connector,

Harness Side

Point B

MAF/IAT

Sensor

Connector,

Harness Side

MAF RTN - Pin 4PWRGND - Pin

MAF - Pin 3 VPWR - Pin 6

 Record the PID reading while both jumpers are installed.  Remove the VPWR jumper while observing the MAF PID.  Does the MAF PID change from greater than 4.50 volts to less than 0.26 volt when the VPWR

jumper is removed?

Yes No

INSTALL a new MAF/IAT sensor. REFER to the

ELECTRONIC ENGINE CONTROLS GASOLINE ENGINES -- E-SERIES . RESET the

keep alive memory (KAM). REFER

GO to DC16.

toRESETTING THE KEEP ALIVE MEMORY

(KAM) .

DC16 CHECK THE MAF CIRCUIT FOR AN OPEN IN THE HARNESS

 Key in OFF position.  Remove the jumper wire(s).  PCM connector disconnected.  Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) MAF/IAT

Sensor

Connector,

Harness Side

MAF MAF - Pin 3

 Is the resistance less than 5 ohms?

Yes No

GO to DC17.

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

 PCM connector disconnected.  Measure the resistance between:

( + ) MAF/IAT

Sensor

Connector,

( - ) Vehicle

Battery

Harness Side

PWRGND - Pin 5Negative

terminal

 Is the resistance less than 5 ohms?

Yes No

GO to DC18.

2008 Ford Edge SE

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

DC18 CHECK THE MAF RTN CIRCUIT FOR AN OPEN IN THE HARNESS

 Measure the resistance between:

( + ) PCM

Connector,

Harness Side

MAF RTN

 Is the resistance less than 5 ohms?

( - ) MAF/IAT

Sensor

Connector,

Harness Side

MAF RTN - Pin 4

Yes No

GO to DC31.

DC19 DTC P1100: CHECK THE MAF CIRCUIT FOR INTERMITTENT VOLTAGE TO THE PCM

 Check for broken/loose air outlet tube clamps (throttle body and air cleaner assembly ends), cracks/holes

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

in the air outlet tube, and worn gaskets between the MAF sensor and the air cleaner assembly. Verify the MAF sensor is connected.

 Key ON, engine running.  Access the PCM and monitor the MAF PID.  If idle is not stable, refer to NO DIAGNOSTIC TROUBLE CODES (DTCS) PRESENT SYMPTOM

CHART INDEX .

 Access the PCM and monitor the RPM PID.

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 Run the engine up to 1,500 RPM for 5 seconds, then bring it back to idle.  Lightly tap on the MAF sensor and wiggle the harness connector to simulate road shock.  Does the MAF PID go below 0.23 volt or above 4.6 volts?

Yes No

INSPECT the MAF/IAT sensor connector. If OK, INSTALL a new MAF/IAT sensor. REFER to the

ELECTRONIC ENGINE CONTROLS GASOLINE ENGINES -- E-SERIES . RESET the

GO to DC20.

keep alive memory (KAM). REFER toRESETTING THE KEEP ALIVE MEMORY

(KAM) .

DC20 CHECK THE MAF CIRCUIT FOR AN INTERMITTENT OPEN OR SHORTS

 Key ON, engine running.  Access the PCM and monitor the MAF PID.  Wiggle, shake, and bend small sections of the wiring harness while working from the sensor to the PCM.  Does the MAF PID go below 0.23 volt or above 4.6 volts?

Yes No

REPAIR as necessary. RESET the keep alive memory (KAM). REFER toRESETTING THE

KEEP ALIVE MEMORY (KAM) .

DC21 DTC P0103: CHECK THE MAF SENSOR SCREEN FOR CONTAMINATION

Unable to duplicate or identify the concern at this time. CLEAR the DTCs. REPEAT the self-test.

NOTE: DTC P0103 can be generated by foreign material blocking the MAF sensor

screen, causing an air flow restriction.

 Check the MAF sensor screen for contamination or blockage.  Check the air cleaner element and air tubes for proper installation and sealing.  Are any concerns present?

Yes No

REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test.

GO to DC22.

DC22 DTC P0103: CHECK THE MAF SENSOR SIGNAL HIGH INPUT TO THE PCM

 Key ON, engine OFF.  Access the PCM and monitor the MAF PID.  Is the voltage greater than 2.44 V?

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Yes No

GO to DC23. GO to DC25.

DC23 CHECK THE MAF SENSOR SIGNAL SENT TO THE PCM

 Key in OFF position.  MAF/IAT Sensor connector disconnected.  Connect a 5 amp fused jumper wire between the following:

Point A

MAF/IAT

Sensor

Connector,

Harness Side

Point B

MAF/IAT

Sensor

Connector,

Harness Side

MAF RTN - Pin 4PWRGND - Pin

 Key ON, engine OFF.  Access the PCM and monitor the MAF PID.  Is the voltage less than 0.1 V?

Yes No

CHECK the MAF/IAT sensor electrical connector for damage, corrosion, and water ingress. If OK, INSTALL a new MAF/IAT sensor. REFER to the

ELECTRONIC ENGINE CONTROLS GASOLINE ENGINES -- E-SERIES . RESET the

keep alive memory (KAM). REFER toRESETTING THE KEEP ALIVE MEMORY (KAM) .

GO to DC24.

DC24 CHECK THE MAF CIRCUIT FOR A SHORT TO VOLTAGE

 Key in OFF position.  PCM connector disconnected.  Key ON, engine OFF.  Measure the voltage between:

( + ) PCM

Connector,

( - )

Harness Side

MAF Ground

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 Is the voltage less than 1 V?

Yes No

GO to DC26.

DC25 CHECK THE MAF SIGNAL SENT TO THE PCM

 Key ON, engine running.  Access the PCM and monitor the RPM PID.  Monitor the MAF signal voltage while increasing the engine RPM from idle to approximately 2,500

REPAIR the short circuit to PWR. CLEAR the DTCs. REPEAT the self-test.

RPM, and then back to idle.

 Access the PCM and monitor the MAF PID.  Is the voltage between 0.23 - 4.6 V?

Yes No

This is an intermittent concern. refer to PINPOINT TEST Z.

DC26 VERIFY THE IDLE CONCERN

 PCM connector connected.  MAF/IAT Sensor connector connected.  Key ON, engine running.  Is an idle concern present?

GO to DC23.

Yes No

DISREGARD DTC P0103 at this time. The concern is elsewhere. RETURN toNO DIAGNOSTIC

TROUBLE CODES (DTCS) PRESENT

GO to DC31.

SYMPTOM CHART INDEX to diagnose unique

idle concerns.

DC27 SYMPTOMS WITHOUT DTCS: CHECK THE CONDITIONS RELATED TO THE MAF SENSOR

 Check the air inlet system (air cleaner, housing, duct work) for obstructions or blockage.  Check for broken/loose air outlet tube clamps (throttle body and air cleaner assembly ends), cracks/holes

in the air outlet tube, and worn gaskets between the MAF sensor and the air cleaner assembly. Verify the MAF sensor is connected.

 Is a concern present?

Yes No

REPAIR as necessary. RESET the keep alive

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memory (KAM). REFER toRESETTING THE KEEP ALIVE MEMORY (KAM) .

DC28 DTCS P0171, P0172, P0174, P0175, P2195, P2196, P2197 OR P2198: CH ECK THE FUNCTIONALITY OF THE MAF SENSOR

GO to DC28.

NOTE: A MAF PID value of less than 0.6 volt may indicate an incorrectly installed air

cleaner or a leak in the air inlet system.

 Key ON, engine running.  Allow the engine to stabilize at the correct operating temperature.  Access the PCM and monitor the MAF PID.  Check that the MAF PID at idle and NEUTRAL is not greater than 30% of the normal MAF listed in the

REFERENCE VALUES article, Reference Values or not greater than 1.3 volts.

 Is the PID value within the expected range?

Yes No

GO to DC30. GO to DC29.

DC29 CHECK TO ISOLATE THE MAF SENSOR FROM A LEAN DRIVEABILITY OCCURRENCE

NOTE: Due to increasingly stringent emission/OBD requirements, a fuel system DTC

on some vehicles can be generated without a noticeable driveability concern with or without the MAF sensor disconnected. Under these conditions, if the MAF PID indicates a MAF sensor concern, install a new MAF sensor. Refer to the ELECTRONIC ENGINE CONTROLS - GASOLINE ENGINES -- E-SERIES .

 Key in OFF position.  MAF/IAT Sensor connector disconnected.  Key ON, engine running.  Drive the vehicle on the road.  Is the lean driveability symptom (lack of power, spark knock/detonation, buck/jerk or

hesitation/surge on acceleration) gone?

Yes No

INSTALL a new MAF/IAT sensor. REFER to the

ELECTRONIC ENGINE CONTROLS GASOLINE ENGINES

-- E-SERIES . RESET the

keep alive memory (KAM). REFER

GO to DC30.

toRESETTING THE KEEP ALIVE MEMORY

(KAM) .

DC30 VERIFY THE DTC

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 Are any of the following DTCs present:

P0171, P0172, P0174, P0175, P2195, P2196, P2197, or P2198?

Yes No

Unable to duplicate or identify the concern at this time. refer to PINPOINT TEST Z.

DC31 CHECK FOR CORRECT PCM OPERATION

 Disconnect all the PCM connectors.  Visually inspect for:

The concern is elsewhere. RETURN toNO DIAGNOSTIC TROUBLE

CODES (DTCS) PRESENT SYMPTOM CHART INDEX to diagnose performance while

driving concerns.

 pushed out pins

 corrosion  Connect all the PCM connectors and make sure they seat correctly.  Carry out the PCM self-test and verify the concern is still present.  Is the concern still present?

Yes No

INSTALL a new PCM. REFER toFLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming the VID Block for a

The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Replacement PCM.

PINPOINT TEST DD: FUEL RAIL PRESSURE TEMPERATURE (FRPT) SENSOR

WARNING: Vehicle fuel systems are pressurized even when the engine is not

running. To avoid fire or personal injury, disable the fuel delivery system and relieve fuel system pressure before removing any fuel system component. Refer to the fuel system information at the beginning of pinpoint HC. Failure to follow these instructions may result in personal injury.

NOTE: With the engine running, the FRP PID value may be 48-70 kPa (7-10 psi) higher

than a fuel pressure reading taken with a mechanical gauge.

This pinpoint test is intended to diagnose the following:

 fuel rail pressure temperature (FRPT) sensor (9G756)

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 harness circuits: FRP and FRT  powertrain control module (PCM) (12A650)

FRPT SENSOR VOLTAGE AND PRESSURE SPECIFICATIONS

Voltage Pressure (kPa) Pressure (psi)

4.5 482 70

3.9 413 60

3.4 344 50

2.8 275 40

2.2 207 30

1.6 138 20

1.1 69 10

0.5 0 0

FRPT SENSOR TEMPERATURE, VOLTAGE, AND RESISTANCE SPECIFICATIONS

Temperature Sensor

°C °F Volts K Ohms

100 212 0.47 2.073

95 203 0.54 2.405 90 194 0.61 2.800 85 185 0.70 3.273 80 176 0.80 3.840 75 167 0.92 4.524 70 158 1.06 5.351 65 149 1.21 6.356 60 140 1.38 7.584 55 131 1.56 9.091 50 122 1.77 10.949 45 113 1.99 13.252 40 104 2.23 16.123 35 95 2.48 19.720 30 86 2.74 24.253 25 77 3.00 30.000 20 68 3.26 37.332 15 59 3.50 46.745 10 50 3.73 58.911

5 41 3.95 74.745 0 32 4.13 95.501

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Fig. 33: Fuel Rail Pressure Temperature (FRPT) Sensor Connector Courtesy of FORD MOTOR CO.

Pin Circuit

3 FRT (Fuel Rail Temperature) 1 FRP (Fuel Rail Pressure) 4 SIGRTN (Signal Return) 2 VREF (Reference Voltage)

For PCM connector views or reference values, refer to the REFERENCE VALUES article.

Vehicle Connector Pin Circuit

Escape/Mariner 150 (50-50-50) Pin E40

E28 E41 E37

F-150, Mark LT

190 Pin E57

E19 E58 E32

All other vehicles 170 Pin E57

E19 E58 E32

VREF FRT SIGRTN FRP

DD1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTC)

 Are DTCs P0180, P0181, P0182, P0183, P0190, P0191, P0192 or P0193 present?

Yes No

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For DTC P0180, GO to DD24. For DTC P0181, GO to DD26. For continuous memory DTCs P0182 or P0183, GO to DD2. For KOEO and KOER DTCs P0182 or P0183, GO to DD17. For continuous memory DTC P0190, GO to DD3.

For all others, GO toDIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .

For DTC P0191, GO to DD11. For continuous memory DTCs P0192 or P0193, GO to DD16. For KOEO and KOER DTCs P0192 or P0193, GO to DD3.

DD2 CHECK THE FRPT AND PCM CONNECTORS FOR DAMAGE

 Key ON, engine OFF.  Access the PCM and monitor the FRT PID.  While observing the PID, carry out the following:

 Tap on the sensor to simulate road shock

 Wiggle the sensor connector

 Wiggle, shake, and bend small sections of the wiring harness while working from the sensor to the

PCM

 Check the FRPT and PCM connectors for damage and corrosion.  Is a concern present?

Yes No

DISREGARD the current diagnostic trouble code

ISOLATE the concern and REPAIR as necessary.

(DTC) at this time. DIAGNOSE the next DTC. GO toDIAGNOSTIC TROUBLE CODE (DTC)

CHARTS AND DESCRIPTIONS .

DD3 CONTINUOUS MEMORY DTC P0190, KOEO AND KOER DTCS P0192 AND P0193: CHECK THE FRPT SENSOR FOR FUEL LEAKS

NOTE: Repair any fuel pump DTCs prior to this test.

 Key ON, engine running.  Idle the engine for 2 minutes.  Inspect the FRPT vacuum hose between the intake manifold and the FRPT sensor for air leaks and correct

connection.

 Key in OFF position.  Remove the vacuum hose from the FRPT.  Inspect the FRPT and vacuum hose for traces of fuel.

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 Is any fuel present?

Yes No

INSTALL a new FRPT sensor. REFER to the fuel system WARNING information at the beginning of Pinpoint Test HC. refer to PINPOINT TEST HC REFER to the ELECTRONIC ENGINE

GO to DD4.

CONTROLS - GASOLINE ENGINES -- ESERIES .

CLEAR the DTCs. REPEAT the self-test.

DD4 CHECK THE VREF AND SIGRTN CIRCUITS FOR AN OPEN IN THE HARNESS

 Connect the vacuum hose to the FRPT.  FRPT Sensor connector disconnected.  Key ON, engine OFF.  Measure the voltage between:

( + ) FRPT

Sensor

Connector,

Harness Side

( - ) FRPT

Sensor

Connector,

Harness Side

VREF - Pin 2 SIGRTN - Pin 4

 Is the voltage between 4.5 - 5.5 V?

Yes No

For DTC P0190, GO to DD12. For DTC P0192, GO to DD5 For DTC P0193, GO to DD7

DD5 INDUCE A HIGH VOLTAGE ON THE FRPT CIRCUIT

 Key in OFF position.  Connect a 5 amp fused jumper wire between the following:

. .

refer to PINPOINT TEST C.

Point A FRPT

Sensor

Connector,

Harness Side

Point B FRPT

Sensor

Connector,

Harness Side

VREF - Pin 2 FRP - Pin 1

 Key ON, engine OFF.  Access the PCM and monitor the FRP PID.

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 Is the voltage greater than 4.5 V?

Yes No

INSTALL a new FRPT sensor. REFER to the fuel system WARNING information at the beginning of Pinpoint Test HC. refer to PINPOINT TEST HC REFER to the ELECTRONIC ENGINE

GO to DD6.

CONTROLS - GASOLINE ENGINES -- ESERIES .

CLEAR the DTCs. REPEAT the self-test.

DD6 CHECK THE FRP CIRCUIT FOR A SHORT TO FRT, SIGRTN, AND GND IN THE HARNESS

 Key in OFF position.  Remove the jumper wire(s).  PCM connector disconnected.  Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

FRP SIGRTN FRP FRT

 Measure the resistance between:

( + ) PCM

Connector,

( - )

Harness Side

FRP Ground

 Is the resistance greater than 10K ohms?

Yes No

GO to DD28.

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

DD7 CHECK THE FRP CIRCUIT FOR AN OPEN IN THE HARNESS

 Key in OFF position.  PCM connector disconnected.  Measure the resistance between:

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( + ) PCM

Connector,

Harness Side

( - ) FRPT

Sensor

Connector,

Harness Side

FRP FRP - Pin 1

 Is the resistance less than 5 ohms?

Yes No

GO to DD8.

DD8 CHECK THE FRP CIRCUIT FOR A SHORT TO VREF AND FRT IN THE HARNESS

 Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

FRP VREF FRP FRT

 Are the resistances greater than 10K ohms?

Yes No

GO to DD9.

DD9 CHECK THE FRP CIRCUIT FOR A SHORT TO VOLTAGE

 Key ON, engine OFF.  Measure the voltage between:

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

( + ) FRPT

Sensor

Connector,

( - )

Harness Side

FRP - Pin 1 Ground

 Is any voltage present?

Yes No

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

GO to DD10.

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DD10 INDUCE A LOW VOLTAGE ON THE FRPT CIRCUIT

 Key in OFF position.  PCM connector connected.  Connect a 5 amp fused jumper wire between the following:

Point A FRPT

Sensor

Connector,

Harness Side

Point B FRPT

Sensor

Connector,

Harness Side

FRP - Pin 1 SIGRTN - Pin 4

 Key ON, engine OFF.  Access the PCM and monitor the FRP PID.  Is the voltage less than 0.01 V?

Yes No

INSTALL a new FRPT sensor. REFER to the fuel system WARNING information at the beginning of Pinpoint Test HC. refer to PINPOINT TEST HC. REFER to the ELECTRONIC ENGINE

CONTROLS - GASOLINE ENGINES -- ESERIES .

CLEAR the DTCs. REPEAT the self-test.

DD11 DTC P0191: CHECK FOR FUEL PUMP DTCS

GO to DD28.

 Carry out the self-test.  Are DTCs P1233, P1234, P1235, P1236, P1237 or P1238 present?

Yes No

DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO toDIAGNOSTIC TROUBLE CODE (DTC)

GO to DD12.

CHARTS AND DESCRIPTIONS .

DD12 INSPECT ALL THE VACUUM HOSES CONNECTED TO THE INTAKE MANIFOLD FOR LEAKS

 Key in OFF position.  FRPT Sensor connector connected.  Key ON, engine running.  Allow the engine idle to stabilize.  Inspect all the vacuum hoses connected to the intake manifold for leaks.

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

 Are any vacuum hose concerns present?

Yes No

ISOLATE the concern and REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test.

DD13 CHECK THE FRPT CONNECTOR FOR DAMAGE OR CORROSION

 Key in OFF position.  FRPT Sensor connector disconnected.  Inspect the sensor, wiring, and connector for damage, corrosion, or water intrusion.  Is a concern present?

GO to DD13.

Yes No

REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test.

GO to DD14.

DD14 CHECK THE FRP PID

NOTE: The fuel pressure is likely to increase after the fuel pressure is relieved with the

system closed. The rate and amount of the fuel pressure increase is dependent upon the ambient air and fuel temperatures.

NOTE: Prepare to record the FRP PID value within 5 seconds after the engine is shut

off and also after the fuel pressure is relieved.

 FRPT Sensor connector connected.  Key ON, engine running.  Allow the engine idle to stabilize.  Access the PCM and monitor the FRP PID.  Key in OFF position.  Key ON, engine OFF.  Record the FRP PID value within 5 seconds of the key off.  Relieve the fuel pressure. Refer to the FUEL SYSTEM - GENERAL INFORMATION - GASOLINE

AND DIESEL -- E-SERIES for the Fuel System Pressure Release procedure.

 Disable the fuel pump.  Key ON, engine OFF.  Record the FRP PID value within 5 seconds of carrying out the fuel system pressure release procedure.  Is the difference between the recorded FRP PID values greater than 34 kPa (5 psi)?

Yes No

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refer to PINPOINT TEST HC. GO to DD15.

DD15 COMPARE THE FRP PID TO THE MECHANICAL GAUGE

NOTE: Most mechanical gauges are referenced to atmospheric pressure. The FRPT

sensor is referenced to manifold pressure. In order to make a valid comparison, the engine must be off.

NOTE: The vehicle may exhibit a long crank until the fuel system is pressurized.

 Key in OFF position.  Connect a mechanical fuel pressure gauge.  Key ON, engine OFF.  Monitor the mechanical gauge.  Access the PCM and monitor the FRP PID.  Compare the FRP PID value to the mechanical gauge.  Key in OFF position.  Pressurize the fuel system. Refer to the FUEL SYSTEM - GENERAL INFORMATION - GASOLINE

AND DIESEL -- E-SERIES for the Fuel System Pressure Release procedure to pressurize the fuel system.

 Key ON, engine running.  Allow the fuel pressure to stabilize.  Key in OFF position.  Key ON, engine OFF.  Compare the FRP PID value to the mechanical gauge.  Are the FRP PID values within 34 kPa (5 psi) of the mechanical gauge readings?

Yes No

INSTALL a new FRPT sensor. REFER to the fuel system WARNING information at the beginning of

GO to DD28.

Pinpoint Test HC. refer to PINPOINT TEST HC REFER to the ELECTRONIC ENGINE

CONTROLS - GASOLINE ENGINES -- ESERIES .

CLEAR the DTCs. REPEAT the self-test.

DD16 CONTINUOUS MEMORY DTCS P0192 AND P0193: CHECK THE FRPT CIRCUIT FOR AN INTERMITTENT CONCERN

NOTE: Repair any fuel pump DTCs prior to this test.

 Ke

ON, engine OFF.

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 Access the PCM and monitor the FRP PID.  While observing the PID, carry out the following:

 Tap on the sensor to simulate road shock

 Wiggle the sensor connector

 Wiggle, shake, and bend small sections of the wiring harness while working from the sensor to the

PCM

 Check the FRPT connector for damage or corrosion.  Is a concern present?

Yes No

ISOLATE the concern and REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test.

DD17 KOEO AND KOER DTCS P0182 OR P0183: CHECK THE RESISTANCE OF THE FRPT SENSOR

refer to PINPOINT TEST Z.

 Key in OFF position.  FRPT Sensor connector disconnected.  Measure the resistance between:

( + ) FRPT

Sensor

Connector,

Component

Side

( - ) FRPT

Sensor

Connector,

Component

Side

FRT - Pin 3 SIGRTN - Pin 4

 Is the resistance between 2K - 96K ohms?

Yes No

GO to DD18.

INSTALL a new FRPT sensor. REFER to the fuel system WARNING information at the beginning of Pinpoint Test HC. refer to PINPOINT TEST HC

REFER to the ELECTRONIC ENGINE

CONTROLS - GASOLINE ENGINES -- ESERIES .

CLEAR the DTCs. REPEAT the self-test.

DD18 CHECK THE FRPT FOR INTERNAL SHORTS

 Measure the resistance between:

( + ) FRPT

Sensor

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Connector,

Component

Side

FRT - Pin 3 Ground

 Measure the resistance between:

2008 Ford Edge SE

( - )

( + ) FRPT

Sensor

Connector,

Component

Side

( - ) FRPT

Sensor

Connector,

Component

Side

FRT - Pin 3 FRP - Pin 1 FRT - Pin 3 VREF - Pin 2

 Are the resistances greater than 10K ohms?

Yes No

INSTALL a new FRPT sensor. REFER to the fuel system WARNING information at the beginning of

For DTC P0182, GO to DD19. For DTC P0183, GO to DD21.

Pinpoint Test HC. refer to PINPOINT TEST HC. REFER to the ELECTRONIC ENGINE

CONTROLS - GASOLINE ENGINES -- ESERIES .

CLEAR the DTCs. REPEAT the self-test.

DD19 CHECK THE FRT CIRCUIT(S) FOR A SHORT TO SIGRTN OR GND IN THE HARNESS

 PCM connector disconnected.  Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

FRT SIGRTN

 Measure the resistance between:

( + ) PCM

Connector,

( - )

Harness Side

FRT Ground

 Is the resistance greater than 10K ohms?

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Yes No

GO to DD20.

DD20 FRPT SENSOR: INDUCE A HIGH VOLTAGE ON THE FRT CIRCUIT

 PCM connector connected.  Key ON, engine OFF.  Access the PCM and monitor the FRT PID.  Is the voltage greater than 4.5 V?

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

Yes No

Unable to duplicate or identify the concern at this time.

GO to DD28.

refer to PINPOINT TEST Z.

DD21 CHECK THE FRT AND SIG RTN CIRCUIT(S) FOR AN OPEN IN THE HARNESS

 PCM connector disconnected.  Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) FRPT

Sensor

Connector,

Harness Side

FRT FRT - Pin 3 SIGRTN SIGRTN - Pin 4

 Are the resistances less than 5 ohms?

Yes No

GO to DD22.

DD22 CHECK THE FRT SIGNAL FOR A SHORT TO VREF AND FRP

 Measure the resistance between:

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

( + ) PCM

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

FRT VREF FRT FRP

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 Are the resistances greater than 10K ohms?

Yes No

GO to DD23.

DD23 FOR THE FRPT SENSOR INDUCE A LOW VOLTAGE ON THE FRT CIRCUIT

 PCM connector connected.  Connect a 5 amp fused jumper wire between the following:

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

Point A FRPT

Sensor

Connector,

Harness Side

Point B FRPT

Sensor

Connector,

Harness Side

FRT - Pin 3 SIGRTN - Pin 4

 Key ON, engine OFF.  Access the PCM and monitor the FRT PID.  Is the voltage less than 0.2 V?

Yes No

Unable to duplicate or identify the concern at this time.

GO to DD28.

refer to PINPOINT TEST Z.

DD24 DTC P0180: CHECK FOR THE PRESENCE OF DTC P0182 OR P0183

 Key ON, engine OFF.  Carry out the self-test.  Are DTCs P0182 or P0183 present?

Yes No

GO to DD17. GO to DD25.

DD25 CHECK THE FRT CIRCUIT FOR AN INTERMITTENT CONCERN

 PCM connector connected.  Access the PCM and monitor the FRT PID.  Carry out a thorough wiggle test on the FRPT sensor harness.  Is the FRT signal stable?

Yes No

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GO to DD27.

ISOLATE the concern and REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test.

DD26 KOEO AND KOER DTC P0181: CHECK THE FRT PID

NOTE: Allow vehicle temperatures to stabilize prior to temperature sensor tests.

 Key ON, engine OFF.  The normal test range is 0°C to 100°C (32°F to 212°F).  Access the PCM and monitor the FRT PID.  Is the voltage between 0.4 - 4.5 V?

Yes No

DISREGARD the current diagnostic trouble code

GO to DD27.

(DTC) at this time. DIAGNOSE the next DTC. GO toDIAGNOSTIC TROUBLE CODE (DTC)

CHARTS AND DESCRIPTIONS .

DD27 COMPARE THE PIDS AFTER STABILIZING THE VEHICLE TEMPERATURE

 Access the PCM and monitor the FRT, CHT and ECT PIDs.  Are the temperature PIDs nearly equal in value?

Yes No

The concern is not present at this time. CLEAR the DTCs. REPEAT the self-test.

DD28 CHECK FOR CORRECT PCM OPERATION

 Disconnect all the PCM connectors.  Visually inspect for:

 pushed out pins

 corrosion  Connect all the PCM connectors and make sure they seat correctly.  Carry out the PCM self-test and verify the concern is still present.  Is the concern still present?

refer to PINPOINT TEST Z.

Yes No

INSTALL a new PCM. REFER toFLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming the VID Block for a

The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Replacement PCM.

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PINPOINT TEST DF: VEHICLE SPEED CIRCUIT (VSC) CHECK

WARNING: Strict observance of posted speed limits and driving conditions is

mandatory when proceeding through the following drive cycles. Failure to follow these instructions may result in personal injury.

This pinpoint test is intended to diagnose the following:

 harness circuits: VSC  powertrain control module (PCM) (12A650)

Fig. 34: Anti-lock Brake System (ABS) Module Connector Courtesy of FORD MOTOR CO.

Pin Circuit

21 VSC (Vehicle Speed Circuit)

For PCM connector views or reference values, refer to the REFERENCE VALUES article.

Connector Pin Circuit

170 Pin B29 VSC

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DF1 DTCS P0500, P0503, P1500, P1501 AND P1502: CHECK THE VEHICLE SPEED CIRCUIT FOR INTERMITTENT CONCERNS

NOTE: The PCM detected an error in the vehicle speed information received from the

ABS control module. This test step checks for the recurrence of this vehicle speed error.

 Key ON, engine OFF.  Clear the DTCs.  Gradually increase the vehicle speed to 80 km/h (50 mph).  Coast to an idle and stop the vehicle.  Key in OFF position.  Key ON, engine OFF.  Retrieve the continuous memory DTCs.  Are DTCs P0500, P0503, P1500, P1501 or P1502 present?

Yes No

The vehicle speed input is incorrect. GO to DF2.

DF2 CHECK THE VSC CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS

 Key in OFF position.  PCM connector disconnected.  Anti-lock Brake System (ABS) Module connector disconnected.  Key ON, engine OFF.  Measure the voltage between:

The vehicle speed input is correct. The concern that produced the original DTC may be intermittent. GO to DF5.

( + ) PCM

Connector,

( - )

Harness Side

VSC - Pin B29 Ground

 Is the voltage less than 1 V?

Yes No

GO to DF3. GO to DF6.

DF3 CHECK FOR AN OPEN VSC BETWEEN THE PCM AND THE ABS CONTROL MODULE

 Measure the resistance between:

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

( - ) Anti-lock

( + ) PCM

Connector,

Harness Side

Brake System

(ABS) Module

Connector,

Harness Side

VSC - Pin B29 VSC - Pin 21

 Is the resistance less than 5 ohms?

Yes No

REPAIR the open circuit. CLEAR the DTCs.

GO to DF4.

REPEAT the self-test. GO to DF7.

DF4 CHECK THE VSC CIRCUIT FOR A SHORT TO GROUND IN THE HARNESS

 Measure the resistance between:

( + ) PCM

Connector,

( - )

Harness Side

VSC - Pin B29 Ground

 Is the resistance greater than 10K ohms?

Yes No

REFER to the VEHICLE DYNAMIC SYSTEMS

-- E-SERIES to continue diagnosis of the ABS

control module, speed sensors and wheel speed sensor harness circuits. If these components are

GO to DF6.

working properly, GO to DF8

DF5 VISUAL INSPECTION

NOTE: Refer to the Wiring Diagrams article for harness, module, and connector

locations.

 Key in OFF position.  Visually inspect the VSC circuit harness and connectors at the PCM, ABS, and other VSC user modules

for damage, loose connections, loose grounds, or incorrect routing.

 Does the visual inspection reveal a concern?

Yes No

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Unable to duplicate or identify the concern at this REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test. GO to DF7.

time. REFER to the VEHICLE DYNAMIC

SYSTEMS -- E-SERIES to continue diagnosis of

the ABS control module, speed sensors and wheel

speed sensor harness circuits.

DF6 VERIFY IF THE VSC IS SHORTED IN THE HARNESS OR ANOTHER MODULE

 Key in OFF position.  Determine which, if any, modules are connected to the VSC. Refer to the Wiring Diagrams article. If no

other modules are connected to the VSC, go to the YES Action To Take.

 One at a time, disconnect the modules associated with the VSC. After disconnecting each module, test

again for a short circuit. (Refer to test step that sent you here). Repeat until each associated module is disconnected or the short circuit is eliminated.

 Does the short circuit remain after all associated modules are disconnected?

Yes No

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test. GO to DF7.

DF7 VSC REPAIR VERIFICATION DRIVE CYCLE

REFER to the Workshop article for further

diagnosis of the appropriate module.

GO to DF7.

NOTE: Warm the engine to a normal operating temperature before continuing.

NOTE: Carry out the VSC drive cycle at least 3 times as described below.

 Automatic Transmission Drive Cycle:

 Place the transmission range selector lever in DRIVE range  Accelerate heavily to 56 km/h (35 mph)  Coast down to an idle and stop the vehicle  Cycle the key OFF and ON

 Manual Transmission Drive Cycle:

 Accelerate moderately to 64 km/h (40 mph), while shifting from first to second gear  Coast down to an idle and stop the vehicle

 Cycle the key OFF and ON  Key in OFF position.  Key ON, engine OFF.  Retrieve the continuous memory DTCs.  Are DTCs P0500, P0503, P1500, P1501 or P1502 present?

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Yes No

REFER to the VEHICLE DYNAMIC SYSTEMS

-- E-SERIES to continue diagnosis of the ABS

control module, speed sensors and wheel speed sensor harness circuits. If these components are

The repair has been verified.

working properly, GO to DF8.

DF8 CHECK FOR CORRECT PCM OPERATION

 Disconnect all the PCM connectors.  Visually inspect for:

 pushed out pins

 corrosion  Connect all the PCM connectors and make sure they seat correctly.  Carry out the PCM self-test and verify the concern is still present.  Is the concern still present?

Yes No

INSTALL a new PCM. REFER toFLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming the VID Block for a

The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Replacement PCM.

PINPOINT TEST DG: KNOCK SENSOR (KS)

This pinpoint test is intended to diagnose the following:

 knock sensors KS1, KS2 (12A699)  harness circuits: KS1+, KS1-, KS2+, and KS2-  powertrain control module (PCM) (12A650)

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Fig. 35: Knock Sensor 1 (KS1) Connector - A Courtesy of FORD MOTOR CO.

Fig. 36: Knock Sensor 1 (KS1) Connector Courtesy of FORD MOTOR CO.

- A

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Fig. 37: Knock Sensor 1 (KS1) Connector - C Courtesy of FORD MOTOR CO.

Fig. 38: Knock Sensor 1 (KS1) Connector Courtesy of FORD MOTOR CO.

- D

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 39: Knock Sensor 1 (KS1) Connector - E Courtesy of FORD MOTOR CO.

Fig. 40: Knock Sensor 1 (KS1) Connector Courtesy of FORD MOTOR CO.

Vehicle Connector Pin Circuit

Edge,

A 3 F-Super Duty 6.8L, MKX, Sable, Taurus, Taurus X

Escape/Mariner,

B 1 Fusion 2.3L, Milan 2.3L

- F

4 1 2

KS2+ KS2KS1+ KS1-

KS1+ KS1-

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Expedition, Navigator

F-150 4.2L, Ranger 3.0L

F-150 5.4L, F-Super Duty 5.4L,

C 1

D 1

C 2

Mark LT Fusion 3.0L,

Milan 3.0L,

B 2

Ranger 2.3L MKZ A 1

Mountaineer 4.6L E 1

Mustang 4.6L E 3

All other vehicles F 2

KS1+ KS1-

Fig. 41: Knock Sensor 2 (KS2) Connector - A Courtesy of FORD MOTOR CO.

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Fig. 42: Knock Sensor 2 (KS2) Connector - B Courtesy of FORD MOTOR CO.

Fig. 43: Knock Sensor 2 (KS2) Connector

- C

Courtesy of FORD MOTOR CO.

Vehicle Connector Pin Circuit

Expedition,

A 1 F-Super Duty 5.4L, Navigator

F-150,

A 2 Mark LT

Mustang B 1

All other vehicles C 3

KS2+

KS2-

KS2+

KS2KS2+

KS2-

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For PCM connector views or reference values, refer to the REFERENCE VALUES article.

Vehicle Connector Pin Circuit

Edge, MKX, Sable, Taurus, Taurus X

Escape/Mariner 150 (50-50-50) Pin E32

Expedition, MKZ, Navigator

F-150 4.6L, F-150 4.2L

F-150 5.4L, Mark LT

F-Super Duty, Mustang 4.6L

Focus 190 Pin E46

Fusion, Milan

All other vehicles 170 Pin E49

190 Pin E31

E30 E49 E48 B29, B64 B51

E20 E40 B35

140 Pin E31

E30 E49 E48 E57 B51

190 Pin E49

E48 E57 B51

190 Pin E31

E30 E49 E48 E57 B51

170 Pin E31

E30 E49 E48 E57 B35

E47 E63 B67

140 Pin E49

E48 E57 B51

E48 E57

KS2+ KS2KS1+ KS1VREF VPWR

KS1+ KS1VREF VPWR

KS2+ KS2KS1+ KS1VREF VPWR

KS1+ KS1VREF VPWR

KS2+ KS2KS1+ KS1VREF VPWR

KS1+ KS1VREF VPWR

KS1+ KS1VREF

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

B35 VPWR

DG1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTC)

 Are DTCs P0325, P0326, P0330, or P0331 present?

Yes No

For KOER and continuous memory DTCs P0325, P0326, P0330 and P0331, GO to DG2.

DG2 KOER AND CONTINUOUS MEMORY DTCS P0325, P0326, P0330 AND P0331: CHECK THE INTERNAL RESISTANCE OF THE KS

 KS connector disconnected.  Measure the resistance between:

For all others, GO toDIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .

( + ) KS

Connector,

Component

Side

( - ) KS

Connector,

Component

Side

Suspect KS+ Suspect KS-

 Is the resistance between 4.39M - 5.35M ohms?

Yes No

INSTALL a new KS. REFER to the ELECTRONIC ENGINE

GO to DG3.

CONTROLS - GASOLINE ENGINES -- ESERIES .

CLEAR the DTCs. REPEAT the self-test.

DG3 CHECK THE KS+ CIRCUIT FOR AN OPEN IN THE HARNESS

 Key in OFF position.  PCM connector disconnected.  Measure the resistance between:

( + ) KS

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

Suspect KS+ Suspect KS+

 Is the resistance less than 5 ohms?

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Yes No

GO to DG4.

DG4 CHECK THE KS- CIRCUIT FOR AN OPEN IN THE HARNESS

 Measure the resistance between:

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

( + ) KS

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

Suspect KS- Suspect KS-

 Is the resistance less than 5 ohms?

Yes No

GO to DG5.

DG5 CHECK THE KS+ CIRCUIT FOR A SHORT TO GROUND IN THE HARNESS

 Measure the resistance between:

( + ) KS

Connector,

Harness Side

Suspect KS+

( - ) Vehicle

Battery

Negative terminal

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

 Is the resistance greater than 10K ohms?

Yes No

GO to DG6.

DG6 CHECK THE KS- CIRCUIT FOR A SHORT TO GROUND IN THE HARNESS

 Measure the resistance between:

( + ) KS

Connector,

Harness Side

Suspect KS-

( - ) Vehicle

Battery

Negative terminal

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

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 Is the resistance greater than 10K ohms?

Yes No

GO to DG7.

DG7 CHECK THE KS+ CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS

 Measure the resistance between:

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

( + ) KS

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

Suspect KS+ VPWR Suspect KS+ VREF

 Are the resistances greater than 10K ohms?

Yes No

GO to DG8.

DG8 CHECK THE KS- CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS

 Measure the resistance between:

( + ) KS

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

Suspect KS- VREF Suspect KS- VPWR

 Are the resistances greater than 10K ohms?

Yes No

GO to DG9.

DG9 CHECK THE KS+ CIRCUIT FOR INTERMITTENT CONCERNS

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

NOTE: Carefully wiggle all accessible wiring and connectors associated with the KS

circuit.

 Measure the resistance between:

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

( + ) KS

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

Suspect KS+ Suspect KS+

 Is the resistance less than 5 ohms?

Yes No

GO to DG10.

DG10 CHECK THE KS- CIRCUIT FOR INTERMITTENT CONCERNS

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

NOTE: Carefully wiggle all accessible wiring and connectors associated with the KS

circuit.

 Measure the resistance between:

( + ) KS

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

Suspect KS- Suspect KS-

 Is the resistance less than 5 ohms?

Yes No

GO to DG11.

DG11 CHECK FOR CORRECT PCM OPERATION

 Disconnect all the PCM connectors.  Visually inspect for:

 pushed out pins

 corrosion  Connect all the PCM connectors and make sure they seat correctly.  Carry out the PCM self-test and verify the concern is still present.  Is the concern still present?

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

Yes No

INSTALL a new PCM. REFER toFLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY

The system is operating correctly at this time. The concern may have been caused by a loose or

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

(EEPROM) , Programming the VID Block for a

corroded connector.

Replacement PCM.

PINPOINT TEST DH: THROTTLE POSITION (TP) SENSOR

This pinpoint test is intended to diagnose the following:

 TP sensor (9B989)  binding or sticking throttle linkage  harness circuits: TP, SIGRTN, VREF, VPWR, and PWRGND  powertrain control module (PCM) (12A650)

Fig. 44: Throttle Position (TP) Sensor Connector - A Courtesy of FORD MOTOR CO.

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Fig. 45: Throttle Position (TP) Sensor Connector - B Courtesy of FORD MOTOR CO.

Vehicle Connector Pin Circuit

Escape/Mariner 2.3L, Ranger 2.3L

All other vehicles B 2

A 2

1 3

3 1

TP SIGRTN VREF

For PCM connector views or reference values, refer to the REFERENCE VALUES article.

Vehicle Connector Pin Circuit

Escape/Mariner 150 (50-50-50) Pin E41

B47, B48, B49, B50 B40, E40 B35, B36 E19

Ranger 170 Pin E58

B47, B48, B49, B50 B40, E57 B35, B36 E61

SIGRTN PWRGND VREF VPWR TP

DH1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

 Are DTCs P0068, P0121, P0122, P0123, P1120, or P1124 present?

Yes No

For DTC P0068, GO to DH18. For DTC P0121, GO to DH24. For KOEO and KOER DTC P0122, GO to DH14 For continuous memory DTC P0122, GO to DH13 For DTC P0123, GO to DH9 For DTC P1120, GO to DH4 For DTC P1124, GO to DH2

DH2 KOEO AND KOER DTC P1124: CHECK FOR ANY OTHER DTCS

 Key ON, engine OFF.  Check for KOEO and KOER DTCs.  Is DTC P0405 present?

. . .

For all others, GO toDIAGNOSTIC TROUBLE

CODE (DTC) CHARTS AND DESCRIPTIONS .

Yes No

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DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO toDIAGNOSTIC TROUBLE CODE (DTC)

GO to DH3.

CHARTS AND DESCRIPTIONS .

DH3 CHECK FOR A STUCK THROTTLE PLATE OR LINKAGE

 Key in OFF position.  Visually inspect the throttle linkage and throttle plate for binding or sticking.  Verify the throttle plate and linkage is at closed throttle position.  Does the throttle move freely and return to a closed throttle position?

Yes No

The throttle plate and linkage are OK. GO to DH9.

REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test.

DH4 DTC P1120: CHECK THE TP CIRCUIT FOR FRAYED WIRES OR CORROSION ON THE CONNECTORS

 Key in OFF position.  Carry out a visual inspection of the pins on the harness connector at the TP sensor for corrosion.  Carry out a visual inspection of the harness wires between the TP sensor and the PCM for insulation

fraying and corrosion.

 Is a concern present?

Yes No

REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test.

DH5 CHECK FOR A STUCK TP SENSOR

 Key ON, engine OFF.  Slowly move the throttle from the closed throttle position to the wide open throttle position and observe

GO to DH5.

the TP PID.

 Access the PCM and monitor the TP PID.  Is the voltage greater than 4.5 V?

Yes No

GO to DH22. GO to DH6.

DH6 CHECK THE VOLTAGE BETWEEN THE VREF AND SIGRTN CIRCUITS AT THE TP SENSOR HARNESS CONNECTOR

 TP Sensor connector disconnected.

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

 Key ON, engine OFF.  Measure the voltage between:

2008 Ford Edge SE

( + ) TP Sensor

Connector,

Harness Side

( - ) TP Sensor

Connector,

Harness Side

VREF SIGRTN

 Is the voltage between 4.5 - 5.5 V?

Yes No

GO to DH7. refer to PINPOINT TEST C.

DH7 CHECK THE TP CIRCUIT FOR AN OPEN IN THE HARNESS

 Key in OFF position.  PCM connector disconnected.  Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) TP Sensor

Connector,

Harness Side

TP TP

 Is the resistance less than 5 ohms?

Yes No

GO to DH8.

DH8 CHECK THE TP SENSOR VOLTAGE TO THE PCM

 PCM connector connected.  TP Sensor connector connected.  Key ON, engine running.  Idle the engine for 2 minutes.  Key in OFF position.  Key ON, engine OFF.  Access the PCM and monitor the TP PID.  Slowly move the throttle from the closed throttle position to the wide open throttle position and observe

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

the TP PID.

 Is the voltage between 0.17 - 0.49 V?

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Yes No

INSTALL a new TP sensor. REFER to the

ELECTRONIC ENGINE CONTROLS GASOLINE ENGINES

-- E-SERIES .

If DTC P1120 is still present, GO to DH22

CLEAR the DTCs. REPEAT the self-test.

DH9 DTC P0123 OR DTC P1124: INDUCE THE OPPOSITE TP SENSOR VOLTAGE

 TP Sensor connector disconnected.  Key ON, engine OFF.  Access the PCM and monitor the TP PID.  Is the voltage less than 0.17 V?

Yes No

GO to DH10. GO to DH11.

DH10 CHECK THE VOLTAGE BETWEEN THE VREF AND SIGRTN CIRCUITS AT THE TP SENSOR VEHICLE HARNESS CONNECTOR

 Key ON, engine OFF.  Measure the voltage between:

( + ) TP Sensor

Connector,

Harness Side

( - ) TP Sensor

Connector,

Harness Side

VREF SIGRTN

 Is the voltage between 4.5 - 5.5 V?

Yes No

INSTALL a new TP sensor. REFER to the

ELECTRONIC ENGINE CONTROLS GASOLINE ENGINES

-- E-SERIES .

refer to PINPOINT TEST C.

CLEAR the DTCs. REPEAT the self-test.

DH11 CHECK THE CIRCUIT FOR A SHORT TO VREF AND VPWR IN THE HARNESS

 Key in OFF position.  PCM connector disconnected.  Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

VPWR TP VREF TP

 Are the resistances greater than 10K ohms?

Yes No

GO to DH12.

DH12 CHECK FOR AN INTERMITTENT SHORT TO VOLTAGE IN THE TP CIRCUIT

 Measure the resistance between:

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

( + ) PCM

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

VPWR TP VREF TP

 Observe the digital multimeter (DMM) for an indication of a concern while shaking, wiggling, and

bending the TP circuit between the TP sensor and the PCM.

 Is a concern present?

Yes No

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

DH13 CONTINUOUS MEMORY DTC P0122: CHECK THE TP CIRCUIT FOR AN INTERMITTENT CONCERN

 Key ON, engine OFF.  Clear the PCM DTCs.  Key ON, engine running.  Retrieve the continuous memory DTCs.

GO to DH26.

 Is DTC P0122 present?

Yes No

GO to DH14. refer to PINPOINT TEST Z.

DH14 KOEO AND KOER DTC P0122: CHECK THE VOLTAGE BETWEEN THE VREF AND SIGRTN CIRCUITS AT THE TP SENSOR VEHICLE HARNESS CONNECTOR

 Key in OFF position.  TP Sensor connector disconnected.

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

 Key ON, engine OFF.  Measure the voltage between:

2008 Ford Edge SE

( + ) TP Sensor

Connector,

Harness Side

( - ) TP Sensor

Connector,

Harness Side

VREF SIGRTN

 Is the voltage between 4.5 - 5.5 V?

Yes No

GO to DH15. refer to PINPOINT TEST C.

DH15 CHECK THE TP CIRCUIT FOR AN OPEN IN THE HARNESS

 Key in OFF position.  PCM connector disconnected.  Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) TP Sensor

Connector,

Harness Side

TP TP

 Is the resistance less than 5 ohms?

Yes No

GO to DH16.

DH16 CHECK THE TP CIRCUIT FOR A SHORT TO PWRGND OR SIGRTN IN THE HARNESS

 Measure the resistance between:

( + ) PCM

Connector,

Harness Side

( - ) PCM

Connector,

Harness Side

REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

TP PWRGND TP SIGRTN

 Are the resistances greater than 10K ohms?

Yes No

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

GO to DH17.

DH17 INDUCE THE OPPOSITE TP SENSOR VOLTAGE

 PCM connector connected.  Connect a 5 amp fused jumper wire between the following:

Point A TP

Sensor

Connector,

Harness Side

Point B TP

Sensor

Connector,

Harness Side

REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.

VREF TP

 Key ON, engine OFF.  Access the PCM and monitor the TP PID.  Is the voltage greater than 4.65 V?

Yes No

INSTALL a new TP sensor. REFER to the

ELECTRONIC ENGINE CONTROLS GASOLINE ENGINES -- E-SERIES .

GO to DH26.

CLEAR the DTCs. REPEAT the self-test.

DH18 DTC P0068: CHECK THE RATIONALITY BETWEEN THE TP AND MAF SENSORS

 Attempt to start the engine.  Does the engine start?

Yes No

CHECK for major leaks, cracks and openings between the MAF sensor and the throttle body.

GO to DH19.

REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test. If OK, refer to PINPOINT TEST A.

DH19 CHECK THE TP SENSOR FOR MECHANICAL OPERATION

 Key ON, engine OFF.  Access the PCM and monitor the TP PID.  Slowly move the throttle from the closed throttle position to the wide open throttle position and observe

the TP PID.

 Is the voltage between 0.49 - 4.65 V?

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2008 ENGINE PERFORMANCE Pinpoint Tests - Gasoline Engines

Yes No

INSTALL a new TP sensor. REFER to the

GO to DH20.

ELECTRONIC ENGINE CONTROLS GASOLINE ENGINES

-- E-SERIES .

CLEAR the DTCs. REPEAT the self-test.

DH20 CHECK THE TP SENSOR SIGNAL HIGH VERSUS THE ENGINE LOAD WHILE DRIVING THE VEHICLE

 Key ON, engine running.  Access the PCM and monitor the TP PID.  Access the PCM and monitor the LOAD PID.  Drive the vehicle, exercising the throttle and TP sensor.  Is the TP PID greater than 2.44 volts and the LOAD PID less than 30%?

Yes No

LISTEN for air noise around the MAF sensor and throttle body while the engine is running. REPAIR as necessary. If OK, INSTALL a new TP sensor. REFER to the ELECTRONIC ENGINE

GO to DH21.

CONTROLS - GASOLINE ENGINES -- ESERIES .

CLEAR the DTCs. REPEAT the self-test.

DH21 CHECK THE TP SENSOR SIGNAL LOW VERSUS THE ENGINE LOAD WHILE DRIVING THE VEHICLE

 Key ON, engine running.  Access the PCM and monitor the TP PID.  Access the PCM and monitor the LOAD PID.  Drive the vehicle while exercising the throttle and TP sensor near higher gears (preferably overdrive).  Is the TP PID less than 0.24 volt and the LOAD PID greater than 55%?

Yes No

If continuous memory DTC P0068 is present, INSTALL a new MAF sensor. REFER to the

ELECTRONIC ENGINE CONTROLS GASOLINE ENGINES

-- E-SERIES .

Unable to duplicate or identify the concern at this time. refer to PINPOINT TEST Z.

CLEAR the DTCs. REPEAT the self-test.

DH22 CHECK FOR AN INTERMITTENT TP SIGNAL

 Key ON, engine running.  Access the PCM and monitor the TP PID.  Increase the engine speed to 1,500 RPM for 10 seconds.