Engine Control Module (ECM) Diagnostic Trouble Codes - 3 of 9: Other Volvo V50 I рестайлинг

CHECKING THE STATUS

HINT: This diagnostic trouble code (DTC) can be stored for faults that are detected by the central electronic module (CEM).

Note. If there are diagnostic trouble codes (DTC) for the fuel pump (FP) or the relay for the fuel pump stored in the central electronic module (CEM), these must be fault traced accordingly.

Scheme 62

Scheme 63

Scheme 64

1. Ignition on. Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". The fault is permanent if the fault status is "Fault found". The fault is intermittent if the fault status is "No fault detected".

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S35491283892012042500000)

Scheme 65

Scheme 66

1. Start the engine and run it to normal operating temperature. Read off the fuel pump (FP) load (signal from the engine control module (ECM) to the fuel pump (FP) control module). Check that the signal is approximately 50% (±10 %) with the engine idling at operating temperature. Check the cable between engine control module (ECM) terminal #B20 (#C20) and fuel pump (FP) module terminal #1. Check for a short-circuit to ground. Check for an open-circuit. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000) see «FUEL PUMP DRIVER MODULE (2005, 2006)»(ref-466594-S03260019312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S05179703752012042500000)

VERIFICATION

HINT: After carrying out the repair, check that the fault has been remedied.

Scheme 67

1. Reinstall the connectors, components etc.
2. Start the engine and run it to normal operating temperature. Read off the fuel pump (FP) load (signal from the engine control module (ECM) to the fuel pump (FP) control module). Check that the signal is approximately 50% (±10 %) with the engine idling at operating temperature.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S11442122862012042500000)

FAULT-TRACING INFORMATION

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: This diagnostic trouble code (DTC) can be stored for faults that are detected by the central electronic module (CEM).

Note. If there are diagnostic trouble codes (DTC) for the fuel pump (FP) or the relay for the fuel pump stored in the central electronic module (CEM), these must be fault traced accordingly.

1. Ignition on. Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". The fault is permanent if the fault status is "Fault found". The fault is intermittent if the fault status is "No fault detected".

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S04758001812012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Reinstall the connectors, components etc.
2. Start the engine and run it to normal operating temperature. Read off the fuel pump (FP) load (signal from the engine control module (ECM) to the fuel pump (FP) control module). Check that the signal is approximately 50% (±10 %) with the engine idling at operating temperature.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S15681540912012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: This diagnostic trouble code (DTC) can be stored for faults that are detected by the central electronic module (CEM).

Note. If there are diagnostic trouble codes (DTC) for the fuel pump (FP) or the relay for the fuel pump stored in the central electronic module (CEM), these must be fault traced accordingly.

1. Ignition on. Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". The fault is permanent if the fault status is "Fault found". The fault is intermittent if the fault status is "No fault detected".

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S42076014672012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Reinstall the connectors, components etc.
2. Start the engine and run it to normal operating temperature. Read off the fuel pump (FP) load (signal from the engine control module (ECM) to the fuel pump (FP) control module). Check that the signal is approximately 50% (±10 %) with the engine idling at operating temperature.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S16821886192012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

CHECKING THE FUEL PRESSURE SENSOR

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by checking whether the fuel pressure sensor signal (displayed in VIDA or appropriate scan tool) is unstable, while the actual fuel pressure (displayed on a manometer connected to the wiring for the fuel injection system) is stable.

Scheme 68

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000) CAUTION: The pressure in the fuel injection system can reach approximately 650 kPa when this diagnostic trouble code (DTC) is stored. Use an adapted manometer.
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated using the signals from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). Check the value on the manometer and the value displayed in VIDA (Volvo scan tool). If the fuel pressure sensor signal (displayed in VIDA or appropriate scan tool) is unstable while the actual fuel pressure (displayed on the manometer connected to the wiring for the fuel injection system) is stable, this indicates that the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

1. YES Refer to «CHECKING COMPONENTS»(ref-466655-S33557628332012042500000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S32710846252012042500000)

CHECKING COMPONENTS

Check that the fuel level in the tank is not too low (almost no fuel).

Check the connectors between the fuel pump (FP) control module and the fuel pump (FP). Check for contact resistance. Check for oxidation.

Check the fuel lines and fuel filter for blockage and leaks.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

HINT: The diagnostic trouble code (DTC) can also be caused by a defective fuel pump (FP) control module.

Other information

1. see «FUEL PUMP AND LEVEL SENSOR UNIT»(ref-466648-S13268810382012042500000)
2. see «FUEL PUMP DRIVER MODULE (2005, 2006)»(ref-466594-S03260019312012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S31874085992012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000)
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S31419721672012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by checking whether the fuel pressure sensor signal (displayed in VIDA or appropriate scan tool) is unstable, while the actual fuel pressure (displayed on a manometer connected to the wiring for the fuel injection system) is stable.

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000) CAUTION: The pressure in the fuel injection system can reach approximately 650 kPa when this diagnostic trouble code (DTC) is stored. Use an adapted manometer.
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated using the signals from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). Check the value on the manometer and the value displayed in VIDA (Volvo scan tool). If the fuel pressure sensor signal (displayed in VIDA or appropriate scan tool) is unstable while the actual fuel pressure (displayed on the manometer connected to the wiring for the fuel injection system) is stable, this indicates that the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

1. YES Refer to «CHECKING COMPONENTS»(ref-466655-S40331248792012042500000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S15739977482012042500000)

Check that the fuel level in the tank is not too low (almost no fuel).

Check the connectors between the fuel pump (FP) control module and the fuel pump (FP). Check for contact resistance. Check for oxidation.

Check the fuel lines and fuel filter for blockage and leaks.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

HINT: The diagnostic trouble code (DTC) can also be caused by a defective fuel pump (FP) control module.

Other information

1. see «FUEL PUMP AND LEVEL SENSOR UNIT»(ref-466648-S13268810382012042500000)
2. see «FUEL PUMP DRIVER MODULE (2007-2010)»(ref-466594-S41380616252012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S20922085832012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000)
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S05775176052012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by checking whether the fuel pressure sensor signal (displayed in VIDA or appropriate scan tool) is unstable, while the actual fuel pressure (displayed on a manometer connected to the wiring for the fuel injection system) is stable.

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000) CAUTION: The pressure in the fuel injection system can reach approximately 650 kPa when this diagnostic trouble code (DTC) is stored. Use an adapted manometer.
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated using the signals from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). Check the value on the manometer and the value displayed in VIDA (Volvo scan tool). If the fuel pressure sensor signal (displayed in VIDA or appropriate scan tool) is unstable while the actual fuel pressure (displayed on the manometer connected to the wiring for the fuel injection system) is stable, this indicates that the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

1. YES Refer to «CHECKING COMPONENTS»(ref-466655-S38911895172012042500000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S23478115092012042500000)

Check that the fuel level in the tank is not too low (almost no fuel).

Check the connectors between the fuel pump (FP) control module and the fuel pump (FP). Check for contact resistance. Check for oxidation.

Check the fuel lines and fuel filter for blockage and leaks.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

HINT: The diagnostic trouble code (DTC) can also be caused by a defective fuel pump (FP) control module.

Other information

1. see «FUEL PUMP AND LEVEL SENSOR UNIT»(ref-466648-S13268810382012042500000)
2. see «FUEL PUMP DRIVER MODULE (2007-2010)»(ref-466594-S41380616252012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S13589895022012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000)
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S42840635252012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by comparing the signal from the fuel pressure sensor (read off using VIDA) with the actual fuel pressure (read using a manometer connected to the wiring for the fuel injection system).

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000) CAUTION: The pressure in the fuel injection system can reach approximately 650 kPa when this diagnostic trouble code (DTC) is stored. Use an adapted manometer.
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are roughly the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

1. YES Refer to «CHECKING COMPONENTS»(ref-466655-S41588942112012042500000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S25762699612012042500000)

Check the connectors between the fuel pump (FP) control module and the fuel pump (FP). Check for contact resistance. Check for oxidation.

Remedy as necessary.

Try a new fuel pump (FP) control module if no fault is found during the above fault-tracing.

Other information

1. see «FUEL PUMP DRIVER MODULE (2005, 2006)»(ref-466594-S03260019312012042500000)
2. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S08437752392012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000)
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S13610797542012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reinstall the connectors, components etc.
3. Engine idling
4. Read off the fuel pressure and the fuel pump (FP) work load. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The center digital display (blue font color) indicates the current work load required for the fuel pump (FP) to maintain the present fuel pressure. (Normal value 50 % ±10 %.) The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check the fuel pressure value together with the value for the fuel pump (FP) work load. The requested pressure is 380 kPa at idling speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump (FP) work load indicates a fault in pressure regulation.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S13610797542012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by comparing the signal from the fuel pressure sensor (read off using VIDA) with the actual fuel pressure (read using a manometer connected to the wiring for the fuel injection system).

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000) CAUTION: The pressure in the fuel injection system can reach approximately 650 kPa when this diagnostic trouble code (DTC) is stored. Use an adapted manometer.
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are roughly the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

1. YES Refer to «CHECKING COMPONENTS»(ref-466655-S00803928422012042500000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S30509308462012042500000)

Check the connectors between the fuel pump (FP) control module and the fuel pump (FP). Check for contact resistance. Check for oxidation.

Remedy as necessary.

Try a new fuel pump (FP) control module if no fault is found during the above fault-tracing.

Other information

1. see «FUEL PUMP DRIVER MODULE (2007-2010)»(ref-466594-S41380616252012042500000)
2. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S06593386262012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000)
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S01633943602012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reinstall the connectors, components etc.
3. Engine idling
4. Read off the fuel pressure and the fuel pump (FP) work load. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The center digital display (blue font color) indicates the current work load required for the fuel pump (FP) to maintain the present fuel pressure. (Normal value 50 % ±10 %.) The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check the fuel pressure value together with the value for the fuel pump (FP) work load. The requested pressure is 380 kPa at idling speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump (FP) work load indicates a fault in pressure regulation.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S01633943602012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by comparing the signal from the fuel pressure sensor (read off using VIDA) with the actual fuel pressure (read using a manometer connected to the wiring for the fuel injection system).

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000) CAUTION: The pressure in the fuel injection system can reach approximately 650 kPa when this diagnostic trouble code (DTC) is stored. Use an adapted manometer.
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are roughly the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

1. YES Refer to «CHECKING COMPONENTS»(ref-466655-S12952852722012042500000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S21787364252012042500000)

Check the connectors between the fuel pump (FP) control module and the fuel pump (FP). Check for contact resistance. Check for oxidation.

Remedy as necessary.

Try a new fuel pump (FP) control module if no fault is found during the above fault-tracing.

Other information

1. see «FUEL PUMP DRIVER MODULE (2007-2010)»(ref-466594-S41380616252012042500000)
2. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S09869195672012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000)
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S26442874302012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reinstall the connectors, components etc.
3. Engine idling
4. Read off the fuel pressure and the fuel pump (FP) work load. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The center digital display (blue font color) indicates the current work load required for the fuel pump (FP) to maintain the present fuel pressure. (Normal value 50 % ±10 %.) The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check the fuel pressure value together with the value for the fuel pump (FP) work load. The requested pressure is 380 kPa at idling speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump (FP) work load indicates a fault in pressure regulation.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S26442874302012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by comparing the signal from the fuel pressure sensor (read off using VIDA) with the actual fuel pressure (read using a manometer connected to the wiring for the fuel injection system). This method assumes that the manometer for measuring fuel pressure is correctly calibrated.

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000) CAUTION: The pressure in the fuel injection system can reach approximately 650 kPa when this diagnostic trouble code (DTC) is stored. Use an adapted manometer.
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

1. YES Refer to «CHECKING REGULATION OF THE FUEL PRESSURE»(ref-466655-S07479261612012042500000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S03349272052012042500000)

CHECKING REGULATION OF THE FUEL PRESSURE

HINT: The method checks the pressure in the fuel system by reading out the fuel pressure and the fuel pump (FP) work load. If the pressure gauge for pressures up to 650 kPa is connected, the fuel pressure sensor can also be checked during this test.

1. Disconnect the manometer unless it is adapted for pressures higher than 650 kPa
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. Read off the fuel pressure and the fuel pump (FP) work load. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The center digital display (blue font color) indicates the current work load required for the fuel pump (FP) to maintain the present fuel pressure. (Normal value 50 % ±10 %.) The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check the fuel pressure value together with the value for the fuel pump (FP) work load. The requested pressure is 380 kPa at idling speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump (FP) work load indicates a fault in pressure regulation.

Is the function OK?

1. YES Refer to «CHECKING COMPONENTS»(ref-466655-S02034291082012042500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-466655-S04280306472012042500000)

HINT: The fault may be intermittent or be due to the flow capacity in the system being too low.

Check that the fuel level in the tank is not too low (almost no fuel).

Check the fuel lines between the fuel pump (FP) and the fuel rail for the injectors for leakage.

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Check the connector for the fuel pump (FP) control module. Check for contact resistance. Check for oxidation.

Check the fuel lines and fuel filter for blockage.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «FUEL PUMP AND LEVEL SENSOR UNIT»(ref-466648-S13268810382012042500000)
4. see «FUEL PUMP DRIVER MODULE (2005, 2006)»(ref-466594-S03260019312012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «INFORMATION»(ref-466655-S42699808792012042500000)

Check that the fuel level in the tank is not too low (almost no fuel).

Check the connectors between the fuel pump (FP) control module and the fuel pump (FP). Check for contact resistance. Check for oxidation.

Check the fuel lines and fuel filter for blockage.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

HINT: The diagnostic trouble code (DTC) can also be caused by a defective fuel pump (FP) control module.

Other information

1. see «FUEL PUMP AND LEVEL SENSOR UNIT»(ref-466648-S13268810382012042500000)
2. see «FUEL PUMP DRIVER MODULE (2005, 2006)»(ref-466594-S03260019312012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S10833060522012042500000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000)
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S38442788392012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reinstall the connectors, components etc.
3. Engine idling
4. Read off the fuel pressure and the fuel pump (FP) work load. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The center digital display (blue font color) indicates the current work load required for the fuel pump (FP) to maintain the present fuel pressure. (Normal value 50 % ±10 %.) The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check the fuel pressure value together with the value for the fuel pump (FP) work load. The requested pressure is 380 kPa at idling speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump (FP) work load indicates a fault in pressure regulation.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S38442788392012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by comparing the signal from the fuel pressure sensor (read off using VIDA) with the actual fuel pressure (read using a manometer connected to the wiring for the fuel injection system). This method assumes that the manometer for measuring fuel pressure is correctly calibrated.

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000) CAUTION: The pressure in the fuel injection system can reach approximately 650 kPa when this diagnostic trouble code (DTC) is stored. Use an adapted manometer.
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

1. YES Refer to «CHECKING REGULATION OF THE FUEL PRESSURE»(ref-466655-S17936712012012042500000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S36349318572012042500000)

HINT: The method checks the pressure in the fuel system by reading out the fuel pressure and the fuel pump (FP) work load. If the pressure gauge for pressures up to 650 kPa is connected, the fuel pressure sensor can also be checked during this test.

1. Disconnect the manometer unless it is adapted for pressures higher than 650 kPa
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. Read off the fuel pressure and the fuel pump (FP) work load. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The center digital display (blue font color) indicates the current work load required for the fuel pump (FP) to maintain the present fuel pressure. (Normal value 50 % ±10 %.) The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check the fuel pressure value together with the value for the fuel pump (FP) work load. The requested pressure is 380 kPa at idling speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump (FP) work load indicates a fault in pressure regulation.

Is the function OK?

1. YES Refer to «CHECKING COMPONENTS»(ref-466655-S22000792862012042500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-466655-S32593140062012042500000)

HINT: The fault may be intermittent or be due to the flow capacity in the system being too low.

Check that the fuel level in the tank is not too low (almost no fuel).

Check the fuel lines between the fuel pump (FP) and the fuel rail for the injectors for leakage.

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Check the connector for the fuel pump (FP) control module. Check for contact resistance. Check for oxidation.

Check the fuel lines and fuel filter for blockage.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «FUEL PUMP AND LEVEL SENSOR UNIT»(ref-466648-S13268810382012042500000)
4. see «FUEL PUMP DRIVER MODULE (2007-2010)»(ref-466594-S41380616252012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «INFORMATION»(ref-466655-S16003107352012042500000)

Check that the fuel level in the tank is not too low (almost no fuel).

Check the connectors between the fuel pump (FP) control module and the fuel pump (FP). Check for contact resistance. Check for oxidation.

Check the fuel lines and fuel filter for blockage.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

HINT: The diagnostic trouble code (DTC) can also be caused by a defective fuel pump (FP) control module.

Other information

1. see «FUEL PUMP AND LEVEL SENSOR UNIT»(ref-466648-S13268810382012042500000)
2. see «FUEL PUMP DRIVER MODULE (2007-2010)»(ref-466594-S41380616252012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S20765430112012042500000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000)
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S13574275572012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reinstall the connectors, components etc.
3. Engine idling
4. Read off the fuel pressure and the fuel pump (FP) work load. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The center digital display (blue font color) indicates the current work load required for the fuel pump (FP) to maintain the present fuel pressure. (Normal value 50 % ±10 %.) The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check the fuel pressure value together with the value for the fuel pump (FP) work load. The requested pressure is 380 kPa at idling speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump (FP) work load indicates a fault in pressure regulation.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S13574275572012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by comparing the signal from the fuel pressure sensor (read off using VIDA) with the actual fuel pressure (read using a manometer connected to the wiring for the fuel injection system). This method assumes that the manometer for measuring fuel pressure is correctly calibrated.

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000) CAUTION: The pressure in the fuel injection system can reach approximately 650 kPa when this diagnostic trouble code (DTC) is stored. Use an adapted manometer.
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

1. YES Refer to «CHECKING REGULATION OF THE FUEL PRESSURE»(ref-466655-S00192958382012042500000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S37600379602012042500000)

HINT: The method checks the pressure in the fuel system by reading out the fuel pressure and the fuel pump (FP) work load. If the pressure gauge for pressures up to 650 kPa is connected, the fuel pressure sensor can also be checked during this test.

1. Disconnect the manometer unless it is adapted for pressures higher than 650 kPa
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. Read off the fuel pressure and the fuel pump (FP) work load. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The center digital display (blue font color) indicates the current work load required for the fuel pump (FP) to maintain the present fuel pressure. (Normal value 50 % ±10 %.) The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check the fuel pressure value together with the value for the fuel pump (FP) work load. The requested pressure is 380 kPa at idling speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump (FP) work load indicates a fault in pressure regulation.

Is the function OK?

1. YES Refer to «CHECKING COMPONENTS»(ref-466655-S15053941342012042500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-466655-S30387384092012042500000)

HINT: The fault may be intermittent or be due to the flow capacity in the system being too low.

Check that the fuel level in the tank is not too low (almost no fuel).

Check the fuel lines between the fuel pump (FP) and the fuel rail for the injectors for leakage.

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Check the connector for the fuel pump (FP) control module. Check for contact resistance. Check for oxidation.

Check the fuel lines and fuel filter for blockage.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
3. see «FUEL PUMP AND LEVEL SENSOR UNIT»(ref-466648-S13268810382012042500000)
4. see «FUEL PUMP DRIVER MODULE (2007-2010)»(ref-466594-S41380616252012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «INFORMATION»(ref-466655-S19432871612012042500000)

Check that the fuel level in the tank is not too low (almost no fuel).

Check the connectors between the fuel pump (FP) control module and the fuel pump (FP). Check for contact resistance. Check for oxidation.

Check the fuel lines and fuel filter for blockage.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

HINT: The diagnostic trouble code (DTC) can also be caused by a defective fuel pump (FP) control module.

Other information

1. see «FUEL PUMP AND LEVEL SENSOR UNIT»(ref-466648-S13268810382012042500000)
2. see «FUEL PUMP DRIVER MODULE (2007-2010)»(ref-466594-S41380616252012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S29176655492012042500000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000)
2. Run the engine to operating temperature. Allow the engine to idle
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S08668125322012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reinstall the connectors, components etc.
3. Engine idling
4. Read off the fuel pressure and the fuel pump (FP) work load. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The center digital display (blue font color) indicates the current work load required for the fuel pump (FP) to maintain the present fuel pressure. (Normal value 50 % ±10 %.) The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check the fuel pressure value together with the value for the fuel pump (FP) work load. The requested pressure is 380 kPa at idling speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump (FP) work load indicates a fault in pressure regulation.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S08668125322012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

CHECKING THE COMPONENT

HINT: To avoid injury, disconnect the power supply to the engine cooling fan (FC) during fault-tracing.

Scheme 69

1. Check the connector on the engine coolant temperature (ECT) sensor. Check for contact resistance and oxidation. HINT: This diagnostic trouble code (DTC) is stored if the engine coolant temperature (ECT) sensor freezes. This may happen if the coolant level is low or there is too little glycol in the coolant. Check the engine coolant level and its freezing point. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007) see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000) see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-466594-S40429581352012042500000) see «CONTENTS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S21230855252012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Verification should begin with a cold engine (+20 °C) so that the engine coolant temperature (ECT) sensor can be tested over as wide a temperature range as possible
2. Ignition off
3. Reconnect the connectors, reinstall components etc.
4. Start the engine. Read off the engine coolant temperature (ECT) sensor signal. Check that the engine coolant temperature (ECT) is within its permitted range and corresponds with the engine warming up.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S17993655732012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

FAULTY SIGNAL

See FAULTY SIGNAL

HINT: After carrying out the repair, check that the fault has been remedied.

1. Verification should begin with a cold engine (+20 °C) so that the engine coolant temperature (ECT) sensor can be tested over as wide a temperature range as possible
2. Ignition off
3. Reconnect the connectors, reinstall components etc.
4. Start the engine. Read off the engine coolant temperature (ECT) sensor signal. Check that the engine coolant temperature (ECT) is within its permitted range and corresponds with the engine warming up.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S37131248022012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Verification should begin with a cold engine (+20 °C) so that the engine coolant temperature (ECT) sensor can be tested over as wide a temperature range as possible
2. Ignition off
3. Reconnect the connectors, reinstall components etc.
4. Start the engine. Read off the engine coolant temperature (ECT) sensor signal. Check that the engine coolant temperature (ECT) is within its permitted range and corresponds with the engine warming up.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S42630605792012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

SIGNAL TOO HIGH

See SIGNAL TOO HIGH

HINT: After carrying out the repair, check that the fault has been remedied.

1. Verification should begin with a cold engine (+20 °C) so that the engine coolant temperature (ECT) sensor can be tested over as wide a temperature range as possible
2. Ignition off
3. Reconnect the connectors, reinstall components etc.
4. Start the engine. Read off the engine coolant temperature (ECT) sensor signal. Check that the engine coolant temperature (ECT) is within its permitted range and corresponds with the engine warming up.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S12526977012012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

1. Verification should begin with a cold engine (+20 °C) so that the engine coolant temperature (ECT) sensor can be tested over as wide a temperature range as possible
2. Ignition off
3. Reconnect the connectors, reinstall components etc.
4. Start the engine. Read off the engine coolant temperature (ECT) sensor signal. Check that the engine coolant temperature (ECT) is within its permitted range and corresponds with the engine warming up.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S02539337942012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

SIGNAL TOO LOW

See SIGNAL TOO LOW

See FAULTY SIGNAL

See FAULTY SIGNAL

HINT: To avoid injury, disconnect the power supply to the engine cooling fan (FC) during fault-tracing.

1. Check the connector on the engine coolant temperature (ECT) sensor. Check for contact resistance and oxidation. This diagnostic trouble code (DTC) is stored if the engine coolant temperature (ECT) sensor freezes. This may happen if the coolant level is low or there is too little glycol in the coolant. Check the engine coolant level and its freezing point. HINT: The diagnostic trouble code (DTC) can be caused by a thermostat that doesn't open. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007) see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000) see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-466594-S40429581352012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S03008558612012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Verification should begin with a cold engine (+20 °C) so that the engine coolant temperature (ECT) sensor can be tested over as wide a temperature range as possible
2. Ignition off
3. Reconnect the connectors, reinstall components etc.
4. Start the engine. Read off the engine coolant temperature (ECT) sensor signal. Check that the engine coolant temperature (ECT) is within its permitted range and corresponds with the engine warming up.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S08535066802012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See SIGNAL TOO HIGH

See FAULTY SIGNAL

See FAULTY SIGNAL

Check whether the fault is permanent or intermittent by reading off the signal from the engine coolant temperature (ECT) sensor.

Note. In order for the correct values to be shown, reading of the temperatures must take place at the moment of start.

1. Start the engine.

Check that the engine temperature is reasonable.

The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

HINT: Remove the engine temperature sensor, but leave the connector in place. Leave the engine hood open, then the engine temperature sensor shall show the same temperature as outdoor temperature.

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S40284091982012042500000)

Scheme 70

Scheme 71

Scheme 72

1. Ignition off.
2. Unplug the engine temperature sensor connectors.
3. Check the connectors. Check for loose connections. Check for contact resistance. Check for oxidation. Check the engine temperature sensor's resistance between #1 and #2 (against the sensor). Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000) see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-466594-S40429581352012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S22361799772012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Ignition on. Read off the engine coolant temperature (ECT) sensor signal. Check that the signal is within its permitted range.

Is the value OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S39806799552012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

FAULT-TRACING

See FAULT-TRACING

See FAULT-TRACING

See FAULT-TRACING

1. Start the engine and run it to normal operating temperature. Check whether the fault is permanent or intermittent by reading off the signal from the fuel pressure sensor. With the engine at operating temperature and idling, the signal must be approximately 400 kPa. The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S35140867192012042500000)

Scheme 73

1. Check the fuel pressure sensor connectors. Check for contact resistance and oxidation. Check the signal cable. Check for a short-circuit to ground. Check for an open-circuit. Take readings between: Engine Control Module (ECM) #A89 (#B29) and fuel pressure sensor #4. Check the ground lead. Check for an open-circuit. Take readings between: Engine Control Module (ECM) #A15 (#A15) and fuel pressure sensor #1. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S35446057172012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Start the engine and run it to normal operating temperature. Read off the fuel pressure sensor signal. Check that the fuel pressure is approximately 400 kPa with the engine idling at operating temperature.

Is the value correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S27614310972012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See FAULTY SIGNAL

1. Start the engine and run it to normal operating temperature. Check whether the fault is permanent or intermittent by reading off the signal from the fuel pressure sensor. With the engine at operating temperature and idling, the signal must be approximately 400 kPa. The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S14031541412012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Start the engine and run it to normal operating temperature. Read off the fuel pressure sensor signal. Check that the fuel pressure is approximately 400 kPa with the engine idling at operating temperature.

Is the value correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S01922697322012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

1. Start the engine and run it to normal operating temperature. Check whether the fault is permanent or intermittent by reading off the signal from the fuel pressure sensor. With the engine at operating temperature and idling, the signal must be approximately 400 kPa. The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S29135784202012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Start the engine and run it to normal operating temperature. Read off the fuel pressure sensor signal. Check that the fuel pressure is approximately 400 kPa with the engine idling at operating temperature.

Is the value correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S24778715852012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

SIGNAL MISSING

See SIGNAL MISSING

1. Start the engine and run it to normal operating temperature. Check whether the fault is permanent or intermittent by reading off the signal from the fuel pressure sensor. With the engine at operating temperature and idling, the signal must be approximately 400 kPa. The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S01486820082012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Start the engine and run it to normal operating temperature. Read off the fuel pressure sensor signal. Check that the fuel pressure is approximately 400 kPa with the engine idling at operating temperature.

Is the value correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S17605545152012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

1. Start the engine and run it to normal operating temperature. Check whether the fault is permanent or intermittent by reading off the signal from the fuel pressure sensor. With the engine at operating temperature and idling, the signal must be approximately 400 kPa. The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S00991820032012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Start the engine and run it to normal operating temperature. Read off the fuel pressure sensor signal. Check that the fuel pressure is approximately 400 kPa with the engine idling at operating temperature.

Is the value correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S39402700952012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See SIGNAL TOO HIGH

See SIGNAL TOO HIGH

See SIGNAL TOO LOW

1. Start the engine and run it to normal operating temperature. Check whether the fault is permanent or intermittent by reading off the signal from the fuel pressure sensor. With the engine at operating temperature and idling, the signal must be approximately 400 kPa. The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S04830596072012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Start the engine and run it to normal operating temperature. Read off the fuel pressure sensor signal. Check that the fuel pressure is approximately 400 kPa with the engine idling at operating temperature.

Is the value correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S08825693902012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See SIGNAL TOO LOW

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by comparing the fuel pressure sensor signal (displayed in VIDA or appropriate scan tool) with the actual fuel pressure (displayed on a manometer connected to the wiring for the fuel injection system).

Scheme 74

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-479171-S17915099052012061200000) CAUTION: The pressure in the fuel injection system can reach approx. 800 kPa when this diagnostic trouble code is stored, use an adapted pressure gauge.
2. Run the engine to operating temperature. Allow the engine to idle.
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are roughly the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

1. YES Refer to «CHECKING COMPONENTS»(ref-466655-S03294659472012042500000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466655-S13202360192012042500000)

Check the connectors between fuel pump module and the fuel pump for contact resistance and oxidation.

Remedy as necessary.

Try a new fuel pump (FP) control module if no fault is found during the above fault-tracing.

Other information

1. see «FUEL PUMP DRIVER MODULE (2007-2010)»(ref-466594-S41380616252012042500000)
2. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Scheme 75

1. Continue Refer to «VERIFICATION»(ref-466655-S15027054482012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

1. Connect a manometer.
2. Run the engine to operating temperature. Allow the engine to idle.
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S17688192082012042500000)

HINT: After carrying out the repair, check that the fault has been remedied.

Scheme 76

1. Run the engine to operating temperature. Allow the engine to idle.
2. air conditioning (A/C) off
3. Read off the fuel pressure and the fuel pressure desired value.
4. Start the quick test when the engine is running at idling. During the course of the quick test, the control module regulates the pressure for different target values in different steps (530, 490, 450, 410, 440, 490, 530 kPa). Each step takes 10 seconds. The test usually starts with the pressure momentarily going up to 650 kPa. NOTE: Because the by-pass valve in the fuel pump (FP) will be open at approximately 650 kPa, the pressure will not go higher than this. HINT: An example of normal regulation is (Scheme 76) The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The central digital display and the graphic display (blue font color) indicate the control module target value for the absolute fuel pressure The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it must indicate this pressure. Check that the value for absolute fuel pressure is the same as the target value for absolute fuel pressure. If the values are not the same, this indicates a fault in the pressure regulation. The values may differ during the quick test when the target value is changed. This is due to sluggishness in the fuel regulation and is normal. In some cases, it can take up to 5 seconds before the fuel pressure reaches the target value for the fuel pressure.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-466655-S17688192082012042500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.