Engine Control Module (ECM) Diagnostic Trouble Codes - 3 of 13: Other Volvo XC90 I

CHECKING FUEL INJECTION SYSTEM

Check intake system for air leakage according to INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check fuel pressure according to CHECKING FUEL AND RESIDUAL PRESSURES .

Test drive the car for approximately 10 minutes

Check the mass air flow (MAF) sensor by read off its correction factors. The value should be between 0.8 and 1.2

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

1. To access/replace the mass air flow (MAF) sensor, see «FUEL SYSTEM - REMOVAL, REPLACEMENT AND INSTALLATION»(ref-476751) .

Scheme 120

1. Continue Refer to «VERIFICATION»(ref-476757-S31544528192012060500000)

VERIFICATION

Test drive the car according to the TRIP schedule, see VERIFYING REPAIRS .

Do not turn off engine after test drive.

Connect the car to VIDA (Volvo scan tool) again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

1. YES Refer to «INFORMATION»(ref-476757-S11281935712012060500000)
2. NO VERIFIED: Troubleshooting has been completed.

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.

Check intake system for air leakage according to INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for leakage according to INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT

Check fuel and residual pressure according to CHECKING FUEL AND RESIDUAL PRESSURES

Check that the oil level is between the minimum and maximum markings

Check engine dilution by, reading off the short-term fuel trim with the engine running, plug the crankcase ventilation and read off the short-term fuel trim again, the value should be more or less unchanged

Remedy as necessary.

Was a fault detected?

1. YES Refer to «VERIFICATION»(ref-476757-S02358141162012060500000)
2. NO Refer to «CHECKING MASS AIR FLOW (MAF) SENSOR»(ref-476757-S09672379602012060500000)

CHECKING MASS AIR FLOW (MAF) SENSOR

Test drive the car for approximately 10 minutes

Read off the mass air flow (MAF) sensor correction factor. The value must be between 0.8 and 1.2.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

1. To replace mass air flow (MAF) sensor, see «FUEL SYSTEM - REMOVAL, REPLACEMENT AND INSTALLATION»(ref-476751) .

1. Continue Refer to «VERIFICATION»(ref-476757-S02358141162012060500000)

Test drive the car according to the TRIP schedule, see VERIFYING REPAIRS .

Do not turn off engine after test drive.

Connect the car to VIDA (Volvo scan tool) again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

1. YES Refer to «INFORMATION»(ref-476757-S16852773912012060500000)
2. NO VERIFIED: Troubleshooting has been completed.

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 intake system for air leakage according to INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for leakage according to INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT

Check fuel and residual pressure according to CHECKING FUEL AND RESIDUAL PRESSURES

Check that the oil level is between the minimum and maximum markings

Check engine dilution by, reading off the short-term fuel trim with the engine running, plug the crankcase ventilation and read off the short-term fuel trim again, the value should be more or less unchanged

Remedy as necessary.

Was a fault detected?

1. YES Refer to «VERIFICATION»(ref-476757-S01147759032012060500000)
2. NO Refer to «CHECKING MASS AIR FLOW (MAF) SENSOR»(ref-476757-S14472357292012060500000)

Test drive the car for approximately 10 minutes

Read off the mass air flow (MAF) sensor correction factor. The value must be between 0.8 and 1.2.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

1. To replace mass air flow (MAF) sensor, see «FUEL SYSTEM - REMOVAL, REPLACEMENT AND INSTALLATION»(ref-476751) .

1. Continue Refer to «VERIFICATION»(ref-476757-S01147759032012060500000)

Test drive the car according to the TRIP schedule, see VERIFYING REPAIRS .

Do not turn off engine after test drive.

Connect the car to VIDA (Volvo scan tool) again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

1. YES Refer to «INFORMATION»(ref-476757-S36276782652012060500000)
2. NO VERIFIED: Troubleshooting has been completed.

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 FOR AIR LEAKAGE IN THE INTAKE SYSTEM

Check the induction system for air leaks. See INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Remedy as necessary.

1. Continue Refer to «CHECKING THE FUEL PRESSURE AND RESIDUAL PRESSURE IN THE WORKSHOP»(ref-476757-S42905459542012060500000)

CHECKING THE FUEL INJECTION SYSTEM

Test drive the car for approximately 10 minutes

Check the mass air flow (MAF) sensor. Read off its correction factor. The value should be between 0.8 and 1.2.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

1. see «MASS AIR FLOW (MAF) SENSOR, REPLACING»(ref-476751-S11580805602012060500000)

Scheme 121

1. Continue Refer to «VERIFICATION»(ref-476757-S30009020532012060500000)

CHOOSING A METHOD FOR TAKING A READING

Note. For vehicles with demand activated fuel pumps (FP), perform Quick test of fuel pump (FP) using VIDA (Volvo scan tool).

The fuel pressure can be measured with the car stationary or while being driven. Residual pressure is measured with the car stationary.

When the car is being driven, see TAKING FUEL PRESSURE READINGS WHILE DRIVING THE CAR .

1. Continue Refer to «MEASURING THE LINE PRESSURE»(ref-476757-S42848243342012060500000)

Scheme 122

1. Connect the pressure gauge according to «CONNECTING FUEL PRESSURE GAUGE»(ref-494826-S21621061982012081600000)
2. Remove the soundproofing panel
3. Remove the fuel pump (FP) relay (CMI 12 in the passenger compartment)
4. Connect a cable to the relay base as shown in the illustration. Read off the line pressure from the pressure gauge. The line pressure must be 375-395 kPa Check the residual pressure if the fuel pressure is OK. Remedy as necessary Other information For -2004, see: «CENTRAL ELECTRONIC MODULE (CEM), REPLACING»(ref-476708-S16664243282012060500000) For 2005-, see: «CENTRAL ELECTRONIC MODULE (CEM), REPLACING»(ref-476708-S02617745982012060500000) . For the location of/or to replace the fuel pump (FP), see «FUEL SYSTEM - REMOVAL, REPLACEMENT AND INSTALLATION»(ref-476751) see «REPLACING THE FUEL FILTER»(ref-476751-S40624388182012060500000) To disconnect the pressure gauge, see «DISCONNECTING FUEL PRESSURE GAUGE»(ref-494826-S02768373232012081600000) .

Is the rest pressure to be checked?

1. YES Refer to «CHECKING THE RESIDUAL PRESSURE»(ref-476757-S11575639652012060500000)
2. NO Refer to «CHECKING THE FUEL INJECTION SYSTEM»(ref-476757-S22933523652012060500000)

CHECKING THE RESIDUAL PRESSURE

1. Switch off the ignition
2. Disconnect the cable between the terminals on the relay base
3. Reinstall the fuel pump (FP) relay. The line pressure must not fall below 200 kPa within 20 minutes of the fuel pump (FP) being shut-off. Remedy as necessary Other information see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S08802042072012060500000) For -2004, see: «CENTRAL ELECTRONIC MODULE (CEM), REPLACING»(ref-476708-S16664243282012060500000) For 2005-, see: «CENTRAL ELECTRONIC MODULE (CEM), REPLACING»(ref-476708-S02617745982012060500000) . For the location of/or to replace the fuel pump (FP), see «FUEL SYSTEM - REMOVAL, REPLACEMENT AND INSTALLATION»(ref-476751) To disconnect the pressure gauge, see «DISCONNECTING FUEL PRESSURE GAUGE»(ref-494826-S02768373232012081600000) .

1. Continue Refer to «CHECKING THE FUEL INJECTION SYSTEM»(ref-476757-S22933523652012060500000)

Test drive the car according to the TRIP schedule, see VERIFYING REPAIRS .

Do not turn off engine after test drive.

Connect the car to VIDA (Volvo scan tool) again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

1. YES Refer to «INFORMATION»(ref-476757-S18966922842012060500000)
2. NO VERIFIED: Troubleshooting has been completed.

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 intake system for air leakage according to INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check fuel pressure according to CHECKING FUEL AND RESIDUAL PRESSURES

Test drive the car for approximately 10 minutes

Read off the mass air flow (MAF) sensor correction factor. The value must be between 0.8 and 1.2.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

1. To replace mass air flow (MAF) sensor, see «FUEL SYSTEM - REMOVAL, REPLACEMENT AND INSTALLATION»(ref-476751) .

1. Continue Refer to «VERIFICATION»(ref-476757-S34342274442012060500000)

Test drive the car according to the TRIP schedule, see VERIFYING REPAIRS .

Do not turn off engine after test drive.

Connect the car to VIDA (Volvo scan tool) again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

1. YES Refer to «INFORMATION»(ref-476757-S01379237572012060500000)
2. NO VERIFIED: Troubleshooting has been completed.

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 induction system for air leaks. See INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for air leakage. See INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT

Check the fuel pressure and residual pressure. See FUEL SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT

Check that the oil level is between the minimum and maximum markings

Check engine dilution by, reading off the short-term fuel trim with the engine running, plug the crankcase ventilation and read off the short-term fuel trim again, the value should be more or less unchanged

Remedy as necessary.

1. Continue Refer to «CHECKING MASS AIR FLOW (MAF) SENSOR»(ref-476757-S34508571502012060500000)

Read off the mass air flow (MAF) sensor correction factor. The value must be between 2 and 12.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

1. see «MASS AIR FLOW (MAF) SENSOR, REPLACING»(ref-476751-S11580805602012060500000)

1. Continue Refer to «VERIFICATION»(ref-476757-S05553391022012060500000)

Test drive the car according to the TRIP schedule, see VERIFYING REPAIRS .

Do not turn off engine after test drive.

Connect the car to VIDA (Volvo scan tool) again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

1. YES Refer to «INFORMATION»(ref-476757-S36940272422012060500000)
2. NO VERIFIED: Troubleshooting has been completed.

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 induction system for air leaks.

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for air leakage.

Checking fuel and residual pressure.

Check that the oil level is between the minimum and maximum markings

Check engine dilution by, reading off the short-term fuel trim with the engine running, plug the crankcase ventilation and read off the short-term fuel trim again, the value should be more or less unchanged

Remedy as necessary.

Other information

1. see «INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT»(ref-476750)
2. see «INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT»(ref-476750)
3. see «FUEL SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT»(ref-476758)

1. Continue Refer to «CHECKING MASS AIR FLOW (MAF) SENSOR»(ref-476757-S06426955182012060500000)

Read off the mass air flow (MAF) sensor correction factor. The value must be between 2 and 12.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

1. see «REPLACING THE MASS AIR FLOW (MAF) SENSOR»(ref-476751-S01809303472012060500000)

1. Continue Refer to «VERIFICATION»(ref-476757-S05245486482012060500000)

Test drive the car according to the TRIP schedule, see VERIFYING REPAIRS .

Do not turn off engine after test drive.

Connect the car to VIDA (Volvo scan tool) again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

1. YES Refer to «INFORMATION»(ref-476757-S02676884252012060500000)
2. NO VERIFIED: Troubleshooting has been completed.

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 intake system for air leakage according to INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Start the engine and idle it for 10 minutes.

Check the mass air flow (MAF) sensor by read off its correction factors. The value should be between 2 and 12

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

1. To replace mass air flow (MAF) sensor, see «FUEL SYSTEM - REMOVAL, REPLACEMENT AND INSTALLATION»(ref-476751) .

1. Continue Refer to «VERIFICATION»(ref-476757-S39681212062012060500000)

Test drive the car according to the TRIP schedule, see VERIFYING REPAIRS .

Do not turn off engine after test drive.

Connect the car to VIDA (Volvo scan tool) again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

1. YES Refer to «INFORMATION»(ref-476757-S36002641222012060500000)
2. NO VERIFIED: Troubleshooting has been completed.

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 intake system for air leakage according to INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Start the engine and idle it for 10 minutes.

Check the mass air flow (MAF) sensor by read off its correction factors. The value should be between 2 and 12

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

1. To replace mass air flow (MAF) sensor, see «FUEL SYSTEM - REMOVAL, REPLACEMENT AND INSTALLATION»(ref-476751) .

1. Continue Refer to «VERIFICATION»(ref-476757-S23338126122012060500000)

Test drive the car according to the TRIP schedule, see VERIFYING REPAIRS .

Do not turn off engine after test drive.

Connect the car to VIDA (Volvo scan tool) again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

1. YES Refer to «INFORMATION»(ref-476757-S41324330932012060500000)
2. NO VERIFIED: Troubleshooting has been completed.

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 INFORMATION

LOWER LIMIT

see LOWER LIMIT

UPPER LIMIT

see UPPER LIMIT

see LOWER LIMIT

see UPPER LIMIT

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. 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. Replace the engine coolant temperature (ECT) sensor if the above does not remedy the fault. Remedy as necessary. Other information For B5xx4T, see «REPLACING THE THERMOSTAT AND/OR ENGINE COOLANT TEMPERATURE SENSOR»(ref-476760-S13127344692012060500000) For B6xx4T, see «ENGINE COOLANT TEMPERATURE (ECT) SENSOR, REPLACING»(ref-476695-S19968063362012060500000) . see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476757-S37977257652012060500000)

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

Scheme 123

Scheme 124

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Ignition on
4. Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S29418815372012060500000)

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 THERMOSTAT

1. Start the engine. Run the engine until the engine coolant temperature (ECT) reaches approximately 100 °C
2. Activate the engine cooling fan (FC) with the engine running
3. Wait approximately 90 seconds and then shut-off the engine cooling fan (FC). Read off the engine coolant temperature (ECT). If the temperature is 85 °C or lower when the fan stops, the thermostat is damaged.

Is the temperature lower than 86 °C?

1. YES Refer to «REPLACING THE COMPONENT»(ref-476757-S04939894542012060500000)
2. NO FAULT TRACING FAILED: 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.

REPLACING THE COMPONENT

Try a new thermostat

1. For B5xx4Tx -2004, see «REPLACING THE THERMOSTAT AND/OR ENGINE COOLANT TEMPERATURE SENSOR»(ref-476760-S13127344692012060500000)
2. For B6xx4T, see «THERMOSTAT, REPLACING»(ref-476760-S07579457432012060500000) .

Scheme 125

Try a new engine coolant temperature (ECT) sensor

1. For B5xx4T, see «REPLACING THE THERMOSTAT AND/OR ENGINE COOLANT TEMPERATURE SENSOR»(ref-476760-S13127344692012060500000)
2. For B6xx4T, see «ENGINE COOLANT TEMPERATURE (ECT) SENSOR, REPLACING»(ref-476695-S19968063362012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476757-S32560532662012060500000)

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
4. Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S11911343582012060500000)

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 LOWER LIMIT

see UPPER LIMIT

FAULT-TRACING

see FAULT-TRACING

CHECKING ENGINE COOLANT TEMPERATURE (ECT)

1. Fault-tracing must begin with the engine cold (+20°C) so that the engine coolant temperature (ECT) sensor can be tested over as wide a temperature range as possible
2. Switch off the climate control system
3. Start the engine. Read off the engine coolant temperature (ECT). 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 Refer to «CHECKING THERMOSTAT»(ref-476757-S22943541112012060500000)
2. NO Refer to «REPLACING THE COMPONENT»(ref-476757-S31382219412012060500000)

1. Start the engine. Run the engine until the engine coolant temperature (ECT) reaches approximately 100 °C
2. Activate the engine cooling fan (FC) with the engine running
3. Wait for approximately 90 seconds. Then switch off the engine cooling fan (FC). Read off the engine coolant temperature (ECT). If the temperature is 85 °C or lower when the fan stops, the thermostat is damaged.

Is the temperature lower than 86 °C?

1. YES Refer to «REPLACING THE COMPONENT»(ref-476757-S17355790502012060500000)
2. NO FAULT TRACING FAILED: 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.

Try a new thermostat

1. For B5xx4Tx -2004, see «REPLACING THE THERMOSTAT AND/OR ENGINE COOLANT TEMPERATURE SENSOR»(ref-476760-S13127344692012060500000)
2. For B6xx4T, see «THERMOSTAT, REPLACING»(ref-476760-S07579457432012060500000) .

Try a new engine coolant temperature (ECT) sensor

1. For B5xx4T, see «REPLACING THE THERMOSTAT AND/OR ENGINE COOLANT TEMPERATURE SENSOR»(ref-476760-S13127344692012060500000)
2. For B6xx4T, see «ENGINE COOLANT TEMPERATURE (ECT) SENSOR, REPLACING»(ref-476695-S19968063362012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476757-S20896610592012060500000)

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
4. Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S29541710612012060500000)

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. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Ignition on
4. Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S10318370472012060500000)

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-476757-S26868750652012060500000)

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. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Ignition on
4. Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S07485768922012060500000)

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 CONNECTOR

1. Ignition off
2. Check the connector on the engine coolant temperature (ECT) sensor. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Ignition on
5. Read off the engine coolant temperature (ECT) sensor. If the temperature is now within its permitted range, the fault was caused by poor contact in the connector. Other information For B5xx4T, see «REPLACING THE THERMOSTAT AND/OR ENGINE COOLANT TEMPERATURE SENSOR»(ref-476760-S13127344692012060500000) For B6xx4T, see «ENGINE COOLANT TEMPERATURE (ECT) SENSOR, REPLACING»(ref-476695-S19968063362012060500000) . see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

Is the temperature within its permitted range?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «CHECKING THE WIRING AND COMPONENT»(ref-476757-S04766207882012060500000)

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
4. Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S35873811572012060500000)

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. Ignition off
2. Check the connector on the engine coolant temperature (ECT) sensor. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Ignition on
5. Read off the engine coolant temperature (ECT) sensor. If the temperature is now within its permitted range, the fault was caused by poor contact in the connector. Other information For B5xx4T, see «REPLACING THE THERMOSTAT AND/OR ENGINE COOLANT TEMPERATURE SENSOR»(ref-476760-S13127344692012060500000) For B6xx4T, see «ENGINE COOLANT TEMPERATURE (ECT) SENSOR, REPLACING»(ref-476695-S19968063362012060500000) . see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

Is the temperature within its permitted range?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «CHECKING THE WIRING AND COMPONENT»(ref-476757-S32810222392012060500000)

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
4. Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S41595023452012060500000)

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

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-476757-S17550245792012060500000)

Scheme 126

Scheme 127

Scheme 128

1. Ignition off.
2. Unplug the engine temperature sensor connectors. NOTE: The contact is gold-plated which requires the greatest care to not damage the contact, making it unusable.
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-476691-S38062545372012060500000) For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000) For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) . see «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000) For B5xx4T, see «REPLACING THE THERMOSTAT AND/OR ENGINE COOLANT TEMPERATURE SENSOR»(ref-476760-S13127344692012060500000) For B6xx4T, see «ENGINE COOLANT TEMPERATURE (ECT) SENSOR, REPLACING»(ref-476695-S19968063362012060500000) . see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)

1. Continue Refer to «VERIFICATION»(ref-476757-S41860013542012060500000)

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-476757-S30753166062012060500000)

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 INFORMATION

1. Ignition on. 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 COMPONENTS AND WIRING»(ref-476757-S23290868282012060500000)

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
3. 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 fuel pressure correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S36431127722012060500000)

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

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. Ignition off.
2. Reconnect connectors, reinstall components.
3. Test drive the car according to the TRIP schedule, see «VERIFYING REPAIRS»(ref-494828-S19905032792012081600000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA (Volvo scan tool) again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S16239106402012060500000)

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.

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. Ignition off.
2. Reconnect connectors, reinstall components.
3. Start the engine and let it idle for a maximum of 5 minutes. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S19956068352012060500000)

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 FOR AIR LEAKAGE IN THE EXHAUST SYSTEM

Check for air leakage. See INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT .

Remedy as necessary.

Scheme 129

Was there any air leakage?

1. YES Refer to «VERIFICATION»(ref-476757-S10073196832012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S38566223422012060500000)

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

1. Ignition off
2. Reconnect the connectors. Reinstall the components
3. Test drive the car according to the TRIP schedule. See «VERIFYING REPAIRS»(ref-494828-S19905032792012081600000) . Connect VIDA (Volvo scan tool) again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S21870234342012060500000)

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

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car according to the TRIP schedule. See «VERIFYING REPAIRS»(ref-494828-S19905032792012081600000) . Connect VIDA (Volvo scan tool) again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S11098964322012060500000)

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 for air leakage. See INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT .

Remedy as necessary.

Was there any air leakage?

1. YES Refer to «VERIFICATION»(ref-476757-S27217869292012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S41735340772012060500000)

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

1. Ignition off
2. Reconnect the connectors. Reinstall the components
3. Test drive the car according to the TRIP schedule. See «VERIFYING REPAIRS»(ref-494828-S19905032792012081600000) . Connect VIDA (Volvo scan tool) again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S32116432592012060500000)

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

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car according to the TRIP schedule. See «VERIFYING REPAIRS»(ref-494828-S19905032792012081600000) . Connect VIDA (Volvo scan tool) again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S01801326382012060500000)

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.

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. Ignition off.
2. Reconnect connectors, reinstall components.
3. Test drive the car according to the TRIP schedule, see «VERIFYING REPAIRS»(ref-494828-S19905032792012081600000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA (Volvo scan tool) again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The value should be higher than 1.0.

Is the value higher than 1.0?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S03906442772012060500000)

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. Ignition on. 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 COMPONENTS AND WIRING»(ref-476757-S05238614092012060500000)

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
3. 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 fuel pressure correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S17136950992012060500000)

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. Ignition on. 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 COMPONENTS AND WIRING»(ref-476757-S37297632982012060500000)

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
3. 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 fuel pressure correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S36154919142012060500000)

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. Ignition on. 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 COMPONENTS AND WIRING»(ref-476757-S00307043062012060500000)

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
3. 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 fuel pressure correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S00806470552012060500000)

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

FAULTY SIGNAL

see FAULTY SIGNAL

see SIGNAL TOO LOW

see SIGNAL TOO LOW

Control module previously registered a fault. The fault is now no longer present.

1. Continue Refer to «INFORMATION»(ref-476757-S23895836822012060500000)

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).

1. Ignition off. The control module has registered a fault in the heated oxygen sensor (HO2S). Try a new heated oxygen sensor (HO2S). For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000) For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) . .

1. Continue Refer to «INFORMATION»(ref-476757-S39755665282012060500000)

In case of this defect, troubleshooting is not followed by verification.

The information can be displayed again or the fault-tracing for this fault can be interrupted.

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).

1. Ignition off
2. Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
3. Reinstall the components, reconnect the connectors etc.
4. Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnostic is still running. Other information For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000) For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) . For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000) For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) . For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000) For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) . see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .

Is FAULT NOT DETECTED displayed?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S21367911402012060500000)

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

1. Ignition off.
2. Reinstall components, reconnect connectors etc.
3. Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S09236729232012060500000)

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.

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. Ignition off.
2. Reinstall components, reconnect connectors etc.
3. Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S20153904052012060500000)

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.

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. Ignition off.
2. Reinstall components, reconnect connectors etc.
3. Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S15404559392012060500000)

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 comparing the fuel pressure sensor signal (displayed in VIDA (Volvo scan tool)) with the actual fuel pressure (displayed on a manometer connected to the wiring for the fuel injection system).

1. Connect the pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000) 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 (Volvo scan tool) 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-476757-S29184651202012060500000)
2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-476757-S05021390002012060500000)

CHECKING COMPONENTS

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-476695-S14205863212012060500000)
2. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)

Scheme 130

1. Continue Refer to «VERIFICATION»(ref-476757-S33760368732012060500000)

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 (Volvo scan tool) 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-476757-S08882393252012060500000)

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

Scheme 131

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-476757-S08882393252012060500000)

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 fuel pressure sensor signal (displayed in VIDA (Volvo scan tool)) 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. To connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 (Volvo scan tool) are the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Are the values equal?

1. YES Refer to «CHECKING COMPONENTS»(ref-476757-S12824832332012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S07967718702012060500000)

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

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

Other information

1. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
2. To access or replace the fuel pump (FP), see «LEVEL SENSOR, FUEL TANK/FUEL PUMP, REPLACEMENT»(ref-494763-S07769673732012081600000)
3. To access or replace the pump control module, see «CONTROL MODULE FUEL PUMP (FP), REPLACING»(ref-494826-S05872105882012081600000) .

1. Continue Refer to «VERIFICATION»(ref-476757-S08700835562012060500000)

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
3. 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-476757-S24301610962012060500000)

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

Check for air leakage. See INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT .

Remedy as necessary.

Was there any air leakage?

1. YES Refer to «VERIFICATION»(ref-476757-S39223080212012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S06430069012012060500000)

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

1. Ignition off
2. Reconnect the connectors. Reinstall the components
3. Test drive the car according to the TRIP schedule. See «VERIFYING REPAIRS»(ref-494828-S19905032792012081600000) . Connect VIDA (Volvo scan tool) again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S29786819552012060500000)

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

1. Ignition off
2. Reconnect connectors, reinstall components etc.
3. Test drive the car according to the TRIP schedule. See «VERIFYING REPAIRS»(ref-494828-S19905032792012081600000) . Connect VIDA (Volvo scan tool) again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S30368670942012060500000)

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.

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. {Ignition off.
2. Reconnect connectors, reinstall components.
3. Test drive the car according to the TRIP schedule, see «VERIFYING REPAIRS»(ref-494828-S19905032792012081600000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA (Volvo scan tool) again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S37218621432012060500000)

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.

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. Ignition off.
2. Reconnect connectors, reinstall components.
3. Start the engine and let it idle for a maximum of 5 minutes. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S08119257732012060500000)

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.

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. Ignition off.
2. Reconnect connectors, reinstall components.
3. Test drive the car according to the TRIP schedule, see «VERIFYING REPAIRS»(ref-494828-S19905032792012081600000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA (Volvo scan tool) again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The value should be higher than 1.0.

Is the value higher than 1.0?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476757-S03786766122012060500000)

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 (Volvo 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. To connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 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.

Are the values equal?

1. YES Refer to «CHECKING COMPONENTS»(ref-476757-S24947671672012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S32584292712012060500000)

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

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

Other information

1. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)
2. see «LEVEL SENSOR, FUEL TANK, RIGHT-HAND/FUEL TANK, REPLACING»(ref-476751-S01439095012012060500000)
3. see «FUEL PUMP DRIVER MODULE»(ref-476695-S05835128252012060500000)

1. Continue Refer to «VERIFICATION»(ref-476757-S41282110122012060500000)

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

1. Connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 (Volvo scan tool) 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-476757-S10368606032012060500000)

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 (Volvo 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. To connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 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.

Are the values equal?

1. YES Refer to «CHECKING COMPONENTS»(ref-476757-S15866178892012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S34855703202012060500000)

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

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

Other information

1. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)
2. see «LEVEL SENSOR, FUEL TANK, RIGHT-HAND/FUEL TANK, REPLACING»(ref-476751-S01439095012012060500000)
3. see «FUEL PUMP DRIVER MODULE»(ref-476695-S14205863212012060500000)

1. Continue Refer to «VERIFICATION»(ref-476757-S15980945592012060500000)

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

1. Connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 (Volvo scan tool) 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-476757-S32218615222012060500000)

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 (Volvo 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. To connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 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.

Are the values equal?

1. YES Refer to «CHECKING COMPONENTS»(ref-476757-S00061650102012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S09122644592012060500000)

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

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

Other information

1. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)
2. see «LEVEL SENSOR, FUEL TANK, RIGHT-HAND/FUEL TANK, REPLACING»(ref-476751-S01439095012012060500000)
3. see «FUEL PUMP DRIVER MODULE»(ref-476695-S02740070142012060500000)

1. Continue Refer to «VERIFICATION»(ref-476757-S04955437222012060500000)

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

1. Connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 (Volvo scan tool) 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-476757-S16120849172012060500000)

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 (Volvo 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. To connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 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.

Are the values equal?

1. YES Refer to «CHECKING COMPONENTS»(ref-476757-S19107054502012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S34845702752012060500000)

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

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

Other information

1. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)
2. see «LEVEL SENSOR, FUEL TANK, RIGHT-HAND/FUEL TANK, REPLACING»(ref-476751-S01439095012012060500000)
3. see «CONTROL MODULE FUEL PUMP (FP), REPLACING»(ref-476695-S09602766612012060500000)

1. Continue Refer to «VERIFICATION»(ref-476757-S14224971332012060500000)

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

1. Connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 (Volvo scan tool) 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-476757-S23874206202012060500000)

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 fuel pressure sensor signal (displayed in VIDA (Volvo scan tool)) 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-494826-S30503697792012081600000) . NOTE: 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
4. 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 (Volvo scan tool) are roughly the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Are the values equal?

1. YES Refer to «CHECKING COMPONENTS»(ref-476757-S11921935042012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S22490068692012060500000)

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

Remedy as necessary.

Try a new pump unit if no fault is found during the above fault-tracing.

Other information

1. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
2. To access or replace the pump control module, see «CONTROL MODULE FUEL PUMP (FP), REPLACING»(ref-494826-S05872105882012081600000) .

1. Continue Refer to «VERIFICATION»(ref-476757-S39044644502012060500000)

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

1. Connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 (Volvo scan tool) 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-476757-S09083343522012060500000)

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

Scheme 132

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 lower digital display and the graphic display (yellow 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 should 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-476757-S09083343522012060500000)

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 fuel pressure sensor signal (displayed in VIDA (Volvo scan tool)) 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-494826-S30503697792012081600000) . NOTE: 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
4. 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 (Volvo scan tool) are roughly the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Are the values equal?

1. YES Refer to «CHECKING COMPONENTS»(ref-476757-S16860512692012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S18505887302012060500000)

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

Remedy as necessary.

Try a new pump unit if no fault is found during the above fault-tracing.

Other information

1. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
2. see «FUEL PUMP DRIVER MODULE»(ref-476695-S14205863212012060500000)

1. Continue Refer to «VERIFICATION»(ref-476757-S30863028692012060500000)

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

1. Connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 (Volvo scan tool) 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-476757-S27658574882012060500000)

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-476757-S27658574882012060500000)

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 fuel pressure sensor signal (displayed in VIDA (Volvo scan tool)) 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. To connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 (Volvo scan tool) 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-476757-S37796747462012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476757-S23172901082012060500000)

CHECKING REGULATION OF THE FUEL PRESSURE

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). 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 lower digital display and the graphic display (yellow 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 should 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 pressure regulation correct?

1. YES Refer to «CHECKING COMPONENTS»(ref-476757-S04067949632012060500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-476757-S06288770312012060500000)

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 pump control module connector. Check for contact resistance and 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 «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
2. To connect the breakout box, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
3. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
4. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
5. see «LEVEL SENSOR, FUEL TANK, RIGHT-HAND/FUEL TANK, REPLACING»(ref-476751-S01439095012012060500000)
6. see «FUEL PUMP DRIVER MODULE»(ref-476695-S14205863212012060500000)

1. Continue Refer to «INFORMATION»(ref-476757-S26433844132012060500000)

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

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

Other information

1. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
2. see «LEVEL SENSOR, FUEL TANK, RIGHT-HAND/FUEL TANK, REPLACING»(ref-476751-S01439095012012060500000)
3. see «FUEL PUMP DRIVER MODULE»(ref-476695-S14205863212012060500000)

1. Continue Refer to «VERIFICATION»(ref-476757-S02994820102012060500000)

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. 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 lower digital display and the graphic display (yellow 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 should 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-476757-S16383131802012060500000)

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

1. Connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine to operating temperature. Allow the engine to idle
3. air conditioning (A/C) off
4. 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 (Volvo scan tool) 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-476757-S16383131802012060500000)

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.