Engine Control Module (ECM) Diagnostic Trouble Codes - 3 of 8: Other Volvo C30 I рестайлинг

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 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).

Scheme 67

Scheme 68

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-520008-S06867843122012123100000) 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-500316-S38316754482012091100000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-500316-S24387805522012091100000)

CHECKING COMPONENTS

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»(ref-500254-S33674987522012091100000)
2. see «CHECKING WIRING AND TERMINALS»(ref-500249-S05296466302012091100000)

Scheme 69

1. Continue Refer to «VERIFICATION»(ref-500316-S13175503102012091100000)

VERIFICATION

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

Scheme 70

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-520008-S06867843122012123100000)
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-500316-S22440436262012091100000)

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

Scheme 71

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-500316-S22440436262012091100000)

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.

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-520008-S06867843122012123100000) 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-500316-S06003711362012091100000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-500316-S20516690192012091100000)

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»(ref-500254-S33674987522012091100000)
2. see «CHECKING WIRING AND TERMINALS»(ref-500249-S05296466302012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S33980299582012091100000)

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

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-520008-S06867843122012123100000)
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-500316-S17122767282012091100000)

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-500316-S17122767282012091100000)

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-520008-S06867843122012123100000) 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-500316-S33532485872012091100000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-500316-S13703935852012091100000)

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-500316-S29178985632012091100000)
2. NO Refer to «CHECKING COMPONENTS»(ref-500316-S15228891072012091100000)

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-500251-S16432032892012091100000)
2. see «SIGNAL SPECIFICATION»(ref-500252-S08653660702012091100000)
3. see «FUEL PUMP AND LEVEL SENSOR UNIT»(ref-500308-S36744759732012091100000)
4. see «FUEL PUMP DRIVER MODULE»(ref-500254-S33674987522012091100000)
5. see «CHECKING WIRING AND TERMINALS»(ref-500249-S05296466302012091100000)

1. Continue Refer to «INFORMATION»(ref-500316-S21699414422012091100000)

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-500308-S36744759732012091100000)
2. see «FUEL PUMP DRIVER MODULE»(ref-500254-S33674987522012091100000)
3. see «CHECKING WIRING AND TERMINALS»(ref-500249-S05296466302012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S25676536822012091100000)

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-520008-S06867843122012123100000)
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-500316-S25653392932012091100000)

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-500316-S25653392932012091100000)

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-520008-S06867843122012123100000) 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-500316-S34936453982012091100000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-500316-S01701403132012091100000)

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-500316-S09639586852012091100000)
2. NO Refer to «CHECKING COMPONENTS»(ref-500316-S34716083462012091100000)

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-500251-S16432032892012091100000)
2. see «SIGNAL SPECIFICATION»(ref-500252-S40520643792012091100000)
3. see «FUEL PUMP AND LEVEL SENSOR UNIT»(ref-500308-S36744759732012091100000)
4. see «FUEL PUMP DRIVER MODULE»(ref-500254-S33674987522012091100000)
5. see «CHECKING WIRING AND TERMINALS»(ref-500249-S05296466302012091100000)

1. Continue Refer to «INFORMATION»(ref-500316-S23325564932012091100000)

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-500308-S36744759732012091100000)
2. see «FUEL PUMP DRIVER MODULE»(ref-500254-S33674987522012091100000)
3. see «CHECKING WIRING AND TERMINALS»(ref-500249-S05296466302012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S39332340842012091100000)

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-520008-S06867843122012123100000)
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-500316-S23290474672012091100000)

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-500316-S23290474672012091100000)

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.

Scheme 72

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-500316-S06537694732012091100000)

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-500316-S29759459362012091100000)

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

CHECKING THE COMPONENT

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. 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-500251-S16432032892012091100000) see «SIGNAL SPECIFICATION»(ref-500252-S36983929532012091100000) see «COMPONENT SPECIFICATIONS»(ref-500252-S01220863972012091100000) see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-500254-S41916200992012091100000) see «CONTENTS»(ref-500249-S15428429872012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S21516631852012091100000)

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-500316-S08559999522012091100000)

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: 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-500251-S16432032892012091100000) see «SIGNAL SPECIFICATION»(ref-500252-S36983929532012091100000) see «COMPONENT SPECIFICATIONS»(ref-500252-S01220863972012091100000) see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-500254-S41916200992012091100000) see «CHECKING WIRING AND TERMINALS»(ref-500249-S05296466302012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S40009762122012091100000)

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-500316-S25871603592012091100000)

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

CHECKING THE STATUS

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-500316-S02946186452012091100000)

Scheme 73

Scheme 74

Scheme 75

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-500251-S16432032892012091100000) see «SIGNAL SPECIFICATION»(ref-500252-S36983929532012091100000) see «COMPONENT SPECIFICATIONS»(ref-500252-S01220863972012091100000) see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-500254-S41916200992012091100000) see «CHECKING WIRING AND TERMINALS»(ref-500249-S05296466302012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S09426672362012091100000)

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-500316-S27419247802012091100000)

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-500316-S38921513292012091100000)

Scheme 76

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-500251-S16432032892012091100000) see «SIGNAL SPECIFICATION»(ref-500252-S36983929532012091100000) see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-500254-S13073282302012091100000) see «CHECKING WIRING AND TERMINALS»(ref-500249-S05296466302012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S09759986632012091100000)

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-500316-S06651882542012091100000)

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-500316-S30110489222012091100000)

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-500316-S33717715932012091100000)

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-500316-S17721459512012091100000)

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-500316-S30764312562012091100000)

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

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-500316-S29689256232012091100000)

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-500316-S42082635402012091100000)

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) with the actual fuel pressure (displayed on a manometer connected to the wiring for the fuel injection system).

Scheme 77

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-520008-S06867843122012123100000) 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-500316-S01920553322012091100000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-500316-S20820455342012091100000)

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»(ref-500254-S33674987522012091100000)
2. see «CHECKING WIRING AND TERMINALS»(ref-500249-S05296466302012091100000)

Scheme 78

1. Continue Refer to «VERIFICATION»(ref-500316-S37679154492012091100000)

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-500316-S24778102062012091100000)

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

Scheme 79

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: The illustration to the left shows an example of normal regulation. 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-500316-S24778102062012091100000)

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 FAULT-TRACING

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) with the actual fuel pressure (displayed on 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 manometer. See: «FUEL PRESSURE GAUGE»(ref-520008-S06867843122012123100000) 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 COMPONENTS»(ref-500316-S39510870192012091100000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-500316-S25770848972012091100000)

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-500308-S36744759732012091100000)
2. see «FUEL PUMP DRIVER MODULE»(ref-500254-S33674987522012091100000)
3. see «CONTENTS»(ref-500249-S15428429872012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S11966955522012091100000)

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. Check that the engine starts and that the signal is approximately 35 % (±5 %) when the engine is idling at operating temperature.

Is the function correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-500316-S29095374722012091100000)

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

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) 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 manometer. See: «FUEL PRESSURE GAUGE»(ref-520008-S06867843122012123100000) 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) 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-500316-S15318623922012091100000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-500316-S40162745012012091100000)

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-500308-S36744759732012091100000)
2. see «FUEL PUMP DRIVER MODULE»(ref-500254-S33674987522012091100000)
3. see «CONTENTS»(ref-500249-S15428429872012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S01876121022012091100000)

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

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-520008-S06867843122012123100000)
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-500316-S08059857842012091100000)

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 MISSING

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) with the actual fuel pressure (displayed on a manometer connected to the wiring for the fuel injection system).

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-520008-S06867843122012123100000) 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-500316-S12718989222012091100000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-500316-S07447483822012091100000)

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»(ref-500254-S33674987522012091100000)
2. see «CONTENTS»(ref-500249-S15428429872012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S09615622202012091100000)

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

1. Connect the manometer. See: «FUEL PRESSURE GAUGE»(ref-520008-S06867843122012123100000)
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-500316-S09688054152012091100000)

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

Scheme 80

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 will steer the pressure to different target values in different stages (400, 500, 600 and finally 700 kPa), after which the pressure will be decreased in stages to the same pressure. Each stage lasts for approximately 5 seconds. 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: The illustration to the left shows an example of normal regulation. 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-500316-S09688054152012091100000)

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

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) with the actual fuel pressure (displayed on 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 manometer. See: «FUEL PRESSURE GAUGE»(ref-520008-S06867843122012123100000) 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-500316-S41857775682012091100000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-500316-S08792281412012091100000)

HINT: The method described below is used to check the control of the pressure in the fuel injection system by activating the quick test for the fuel pump (FP). If the pressure gauge for pressures up to 650 kPa is connected, the fuel pressure sensor can also be checked during this test.

Note. In this test, the complete flow capacity of the system is not tested.

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 pressure desired value.
5. 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). 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: The illustration to the left shows an example of normal regulation. 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 Refer to «CHECKING COMPONENTS»(ref-500316-S02615840912012091100000)
2. NO Refer to «CHECKING COMPONENTS»(ref-500316-S02112784962012091100000)

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-500251-S16432032892012091100000)
2. see «SIGNAL SPECIFICATION»(ref-500252-S36983929532012091100000)
3. see «FUEL PUMP AND LEVEL SENSOR UNIT»(ref-500308-S36744759732012091100000)
4. see «FUEL PUMP DRIVER MODULE»(ref-500254-S33674987522012091100000)
5. see «CONTENTS»(ref-500249-S15428429872012091100000)

1. Continue Refer to «INFORMATION»(ref-500316-S36792525092012091100000)

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-500308-S36744759732012091100000)
2. see «FUEL PUMP DRIVER MODULE»(ref-500254-S33674987522012091100000)
3. see «CONTENTS»(ref-500249-S15428429872012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S20808191442012091100000)

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-520008-S06867843122012123100000)
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-500316-S16751824312012091100000)

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

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: The illustration to the left shows an example of normal regulation. 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-500316-S16751824312012091100000)

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

1. Start the engine and run it to normal operating temperature.

Read off the fuel pump (FP) load.

Check whether the fault is permanent or intermittent by checking the value of 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 35 % (±5 %) with the engine idling at operating temperature.

The fault is permanent if the signal is incorrect or the engine will not start.

The fault is intermittent if the signal is correct.

Continue

Refer to CHECKING DIAGNOSTIC TROUBLE CODES (DTCS) IN THE CENTRAL ELECTRONIC MODULE (CEM) .

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.

Check that the engine starts and that the signal is approximately 35 % (±5 %) when the engine is idling at operating temperature.

Is the function correct?

1. YES Troubleshooting has been completed.

1. NO 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 FAULT-TRACING .

See 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. Read off the signal from the fuel temperature sensor. Check that the signal is within its permitted range. The signal is measured in the fuel rail for the injectors. 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-500316-S04407598272012091100000)

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 fuel temperature sensor signal. Check that the signal is within its permitted range. The signal is measured in the fuel rail for the injectors.

Is the value OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-500316-S02484673272012091100000)

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 FAULT-TRACING

1. Start the engine to perform the diagnostic. 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 COMPONENTS AND WIRING»(ref-500316-S39610470042012091100000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine to perform the diagnostic. Read off the diagnostic status and the fault status for the diagnostic trouble code (DTC). Check that the diagnostic is "Completed" and that the fault status is "No fault detected". The function is faulty if the fault status is "Fault found".

Is the fault status "No fault detected"?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-500316-S37928923222012091100000)

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 to perform the diagnostic. 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 COMPONENTS AND WIRING»(ref-500316-S34984583402012091100000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine to perform the diagnostic. Read off the diagnostic status and the fault status for the diagnostic trouble code (DTC). Check that the diagnostic is "Completed" and that the fault status is "No fault detected". The function is faulty if the fault status is "Fault found".

Is the fault status "No fault detected"?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-500316-S39830041272012091100000)

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 to perform the diagnostic. 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 COMPONENTS AND WIRING»(ref-500316-S17362213152012091100000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine to perform the diagnostic. Read off the diagnostic status and the fault status for the diagnostic trouble code (DTC). Check that the diagnostic is "Completed" and that the fault status is "No fault detected". The function is faulty if the fault status is "Fault found".

Is the fault status "No fault detected"?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-500316-S27742070942012091100000)

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 to perform the diagnostic. 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 COMPONENTS AND WIRING»(ref-500316-S23508721642012091100000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine to perform the diagnostic. Read off the diagnostic status and the fault status for the diagnostic trouble code (DTC). Check that the diagnostic is "Completed" and that the fault status is "No fault detected". The function is faulty if the fault status is "Fault found".

Is the fault status "No fault detected"?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-500316-S20589156162012091100000)

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.

Check the connector for the center heated oxygen sensor (HO2S). Check for contact resistance and oxidation.

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION»(ref-500252-S08653660702012091100000)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-500310-S09387820172012091100000)
3. see «CHECKING WIRING AND TERMINALS»(ref-500249-S05296466302012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S42311389602012091100000)

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

1. Test drive the car and ensure that there is a fuel shut-off. The easiest way to do this is to drive at approximately 80 km/h and abruptly release the accelerator pedal (AP) for at least 5 seconds
2. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and the fault status for the diagnostic trouble code (DTC). Check that the diagnostic is "Completed" and that the fault status is "No fault detected". The function is faulty if the fault status is "Fault found".

Is the fault status "No fault detected"?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-500316-S07065606152012091100000)

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.

Check the connector for the center heated oxygen sensor (HO2S). Check for contact resistance and oxidation.

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. «SIGNAL SPECIFICATION»(ref-500252-S40520643792012091100000)
2. «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-500310-S09387820172012091100000)
3. «CHECKING WIRING AND TERMINALS»(ref-500249-S05296466302012091100000)

1. Continue Refer to «VERIFICATION»(ref-500316-S40266396132012091100000)

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

1. Test drive the car and ensure that there is a fuel shut-off. The easiest way to do this is to drive at approximately 80 km/h and abruptly release the accelerator pedal (AP) for at least 5 seconds
2. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and the fault status for the diagnostic trouble code (DTC). Check that the diagnostic is "Completed" and that the fault status is "No fault detected". The function is faulty if the fault status is "Fault found". see scheme 236: Identifying VCT2000 Diagnostic Tool Symbol In VIDA (Volvo Scan Tool)

Is the fault status "No fault detected"?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-500316-S21745101222012091100000)

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.