Engine Control Module (ECM) Diagnostic Trouble Codes - 9 of 13: Other Volvo XC90 I

CHECKING COMPONENTS

Check the cable between front heated oxygen sensor (HO2S) terminal #1 (bank 2) and voltage supply from the system relay. Check for a short-circuit to supply voltage.

Try a new rear heated oxygen sensor if the above measure does not remedy the fault.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000)
2. see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000)
3. see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S40343228252012060500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

Scheme 320

1. Continue Refer to «VERIFICATION»(ref-476778-S12485534462012060500000)

VERIFICATION

HINT: After repairing, it is necessary to check that the malfunction has been fixed.

Scheme 321

Scheme 322

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on to perform the diagnosis. Read off the diagnostic status and trouble status for the diagnostic trouble code. Check that the diagnosis is "Implemented" and that the trouble status is "No malfunction found". If the trouble status is "Malfunction found", this indicates defective function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S26106324902012060500000)

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.

FAULT-TRACING

see FAULT-TRACING

see FAULT-TRACING

CHECKING THE STATUS

1. The ignition must be on 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 found".

1. Continue Refer to «CHECKING COMPONENTS»(ref-476778-S25093972002012060500000)

Check the connector for the rear heated oxygen sensor (bank 2) for contact resistance and oxidation.

Check the cable between rear heated oxygen sensor (HO2S) terminal #1 and the voltage supply from the system relay. Check for an open-circuit. Check for a short-circuit to ground.

Try a new rear heated oxygen sensor if the above measure does not remedy the fault.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000)
2. see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000)
3. see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S40343228252012060500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S06144583302012060500000)

HINT: After repairing, it is necessary to check that the malfunction has been fixed.

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on to perform the diagnosis. Read off the diagnostic status and trouble status for the diagnostic trouble code. Check that the diagnosis is "Implemented" and that the trouble status is "No malfunction found". If the trouble status is "Malfunction found", this indicates defective function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S09767751032012060500000)

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

1. The ignition must be on 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 found".

1. Continue Refer to «CHECKING COMPONENTS»(ref-476778-S31853662252012060500000)

Check the cable between rear heated oxygen sensor terminal #1 (bank 2) and voltage supply from the system relay. Check for a short-circuit to supply voltage.

Try a new rear heated oxygen sensor if the above measure does not remedy the fault.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000)
2. see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000)
3. see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S40343228252012060500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S15484147872012060500000)

HINT: After repairing, it is necessary to check that the malfunction has been fixed.

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on to perform the diagnosis. Read off the diagnostic status and trouble status for the diagnostic trouble code. Check that the diagnosis is "Implemented" and that the trouble status is "No malfunction found". If the trouble status is "Malfunction found", this indicates defective function.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S08287719212012060500000)

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.

Use the following information and general checks during fault-tracing.

Note. Check that the fuses are intact. For locations, see the owner's manual or cover for fuse box.

1. Check, if possible, relevant functions in the vehicle using buttons/controls/test drives to determine the status of the fault. NOTE: If the vehicle does not show any of the given symptoms in the diagnostic trouble code information (DTC), this may mean that the fault is intermittent or that the control module is not detecting the fault at this moment.
2. Use the diagnostic trouble code's frozen values , status identifiers and counter to determine the operating conditions when the fault was detected, the fault's current status and any degree of intermittence of the fault.
3. Check and fault-trace according to the fault causes that are specified in the diagnostic trouble code (DTC) information .
4. Use VIDA (Volvo scan tool) . Read off the parameters, activate components and functions, carry out quick tests and checking routines for the diagnostic trouble codes to identify the fault.
5. Check relevant components according to Component specifications .
6. Check relevant signals using appropriate service information regarding signal specification and breakout box .

Remedy as necessary.

Other information

1. see «DESCRIPTION OF STATUS IDENTIFIER»(ref-494840-S18263369932012081600000)
2. see «DESCRIPTION OF COUNTER»(ref-494840-S28429254232012081600000)
3. see «DESCRIPTION OF PARAMETERS»(ref-476777-S08197823022012060500000)
4. see «DESCRIPTION OF ACTIVATIONS»(ref-476777-S10652960132012060500000)
5. see «LOCATION OF COMPONENTS»(ref-476766-S34089063632012060500000)
6. see «COMPONENT SPECIFICATIONS»(ref-476694-S39749312632012060500000)
7. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S30437390172012060500000)
8. see «SIGNAL SPECIFICATION»(ref-476694-S14228516802012060500000)
9. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

Scheme 323

Scheme 324

Scheme 325

1. Continue Refer to «INFORMATION»(ref-476778-S31773613222012060500000)

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.

see FAULT-TRACING

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. Read off the external temperature sensor's signal using the VCT2000 (or appropriate scan tool). Check that the signal is within its permitted range.

Is the signal OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S33783388422012060500000)

see FAULT-TRACING

1. Ignition on. Check to, see if the fault is permanent or intermittent by reading off the external temperature sensor's signal. Check that the value is within its permitted range. The fault is permanent if the value is not within its permitted range. The fault is intermittent and not currently active if the value is within its permitted range.

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-476778-S27688471452012060500000)

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 external temperature sensor's signal using the VCT2000 (or appropriate scan tool). Check that the signal is within its permitted range.

Is the signal OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S08751402042012060500000)

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

HINT: After repairing, it is necessary to check that the malfunction has been fixed.

1. Ignition off
2. Reconnect the connectors, components, etc.
3. Ignition on
4. Read the diagnostic status and trouble status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. Check the trouble status for the diagnostic trouble code when the diagnosis is "Implemented". When the function is correct the trouble status should be "No malfunction found" when the diagnosis is implemented.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S00173388492012060500000)

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

1. Ignition on Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. Check if the malfunction is permanent or intermittent by reading off the diagnostic trouble code's status when the diagnostic status is "Implemented". If the trouble status is "Malfunction found", this indicates that the malfunction is permanent. If the trouble status is "No malfunction found", this indicates that the malfunction is intermittent and not active right now. NOTE: Trouble status cannot go from "Malfunction found" to "No malfunction found" in the same operating cycle.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S05764853242012060500000)

HINT: After repairing, it is necessary to check that the malfunction has been fixed.

1. Ignition off
2. Reconnect the connectors, components, etc.
3. Ignition on
4. Read the diagnostic status and trouble status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. Check the trouble status for the diagnostic trouble code when the diagnosis is "Implemented". When the function is correct the trouble status should be "No malfunction found" when the diagnosis is implemented.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S37441339042012060500000)

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

1. Start the engine. Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. Check whether the fault is permanent or intermittent by reading the fault status of the trouble code when the diagnostic status is "Completed". If the fault status is "Fault found", the fault is permanent. If the fault status is "No fault found", the fault is intermittent and not currently active. NOTE: The fault status cannot switch from "Fault found" to "No fault found" within the same operating cycle.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S37961483042012060500000)

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

1. Ignition off
2. Reconnect the connectors, components, etc.
3. Start the engine.
4. Test drive the car on the road in different driving conditions with high and low loads so that the engine control module (ECM) can carry out diagnostics.
5. Connect the VCT2000 (or appropriate scan tool) to the data link connector without switching off the engine.
6. Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Check the fault status for the diagnostic trouble code when the scan is "Implemented". When the function is correct the fault status should be "No fault found" when the scan is implemented.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S35086600212012060500000)

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

1. Start the engine. Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. 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". If the fault status is "No fault found" the fault is intermittent and not presently active. NOTE: The fault status cannot change from "Fault found" to "No fault found" in the same operating cycle.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S08625979632012060500000)

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

1. Ignition off
2. Reconnect the connectors, components, etc.
3. Start the engine.
4. Test drive the car on the road in different driving conditions with high and low loads so that the engine control module (ECM) can carry out diagnostics.
5. Connect the VCT2000 (or appropriate scan tool) to the data link connector without switching off the engine.
6. Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Check the fault status for the diagnostic trouble code when the scan is "Implemented". When the function is correct the fault status should be "No fault found" when the scan is implemented.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S20782589782012060500000)

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

1. Start the engine. Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. 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". If the fault status is "No fault found" the fault is intermittent and not presently active. NOTE: The fault status cannot change from "Fault found" to "No fault found" in the same operating cycle.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S16084119782012060500000)

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

1. Ignition off
2. Reconnect the connectors, components, etc.
3. Start the engine.
4. Test drive the car on the road in different driving conditions with high and low loads so that the engine control module (ECM) can carry out diagnostics.
5. Connect the VCT2000 (or appropriate scan tool) to the data link connector without switching off the engine.
6. Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Check the fault status for the diagnostic trouble code when the scan is "Implemented". When the function is correct the fault status should be "No fault found" when the scan is implemented.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S05849938342012060500000)

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. Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. 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". If the fault status is "No fault found" the fault is intermittent and not presently active. NOTE: The fault status cannot change from "Fault found" to "No fault found" in the same operating cycle.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S09795743122012060500000)

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

1. Ignition off
2. Reconnect the connectors, components, etc.
3. Start the engine.
4. Test drive the car on the road in different driving conditions with high and low loads so that the engine control module (ECM) can carry out diagnostics.
5. Connect the VCT2000 (or appropriate scan tool) to the data link connector without switching off the engine.
6. Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Check the fault status for the diagnostic trouble code when the scan is "Implemented". When the function is correct the fault status should be "No fault found" when the scan is implemented.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S27326000772012060500000)

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. Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. 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". If the fault status is "No fault found" the fault is intermittent and not presently active. NOTE: The fault status cannot change from "Fault found" to "No fault found" in the same operating cycle.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S39212059752012060500000)

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

1. Ignition off
2. Reconnect the connectors, components, etc.
3. Start the engine.
4. Test drive the car on the road in different driving conditions with high and low loads so that the engine control module (ECM) can carry out diagnostics.
5. Connect the VCT2000 (or appropriate scan tool) to the data link connector without switching off the engine.
6. Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Check the fault status for the diagnostic trouble code when the scan is "Implemented". When the function is correct the fault status should be "No fault found" when the scan is implemented.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S11049815542012060500000)

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. Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. 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". If the fault status is "No fault found" the fault is intermittent and not presently active. NOTE: The fault status cannot change from "Fault found" to "No fault found" in the same operating cycle.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S03046497692012060500000)

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

1. Ignition off
2. Reconnect the connectors, components, etc.
3. Start the engine.
4. Test drive the car on the road in different driving conditions with high and low loads so that the engine control module (ECM) can carry out diagnostics.
5. Connect the VCT2000 (or appropriate scan tool) to the data link connector without switching off the engine.
6. Read the diagnostic status and fault status for the diagnostic trouble code by selecting the diagnostic trouble code in the list. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Check the fault status for the diagnostic trouble code when the scan is "Implemented". When the function is correct the fault status should be "No fault found" when the scan is implemented.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S35810826322012060500000)

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 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 following method is for checking if the diagnostic trouble code has been caused by a defective fuel pressure sensor. This can be done by comparing the fuel pressure sensor's readout signal with actual fuel pressure (readout on pressure gauge connected to fuel system's lines).

Scheme 326

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000) 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 until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are about the same. Different values indicate malfunction in the circuit for the fuel pressure sensor.

Is the fuel pressure sensor OK?

1. YES Refer to «CHECKING COMPONENTS»(ref-476778-S25766226392012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S02875126592012060500000)

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

Try with a new fuel pump module if no malfunction is found in the above troubleshooting.

Remedy as necessary.

Other information

1. see «CONTROL MODULE FUEL PUMP (FP), REPLACING»(ref-476695-S09602766612012060500000)
2. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)

Scheme 327

1. Continue Refer to «VERIFICATION»(ref-476778-S27059032452012060500000)

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. Reinstall the connectors, components etc.
3. Engine idling
4. Read off the fuel pressure and the work load of the fuel pump. 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 work load. The requested pressure is 380 kPa at idle speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump 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-476778-S30952339522012060500000)

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

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are the same. Different values indicate malfunction.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S30952339522012060500000)

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 following method is for checking if the diagnostic trouble code has been caused by a defective fuel pressure sensor. This can be done by comparing the fuel pressure sensor's readout signal with actual fuel pressure (readout on pressure gauge connected to fuel system's lines).

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000) 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 until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are about the same. Different values indicate malfunction in the circuit for the fuel pressure sensor.

Is the fuel pressure sensor OK?

1. YES Refer to «CHECKING COMPONENTS»(ref-476778-S15077138382012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S08582884892012060500000)

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

Try with a new fuel pump module if no malfunction is found in the above troubleshooting.

Remedy as necessary.

Other information

1. see «CONTROL MODULE FUEL PUMP (FP), REPLACING»(ref-476695-S09602766612012060500000)
2. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S10032367532012060500000)

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. Reinstall the connectors, components etc.
3. Engine idling
4. Read off the fuel pressure and the work load of the fuel pump. 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 work load. The requested pressure is 380 kPa at idle speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump 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-476778-S39139458282012060500000)

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

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are the same. Different values indicate malfunction.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S39139458282012060500000)

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 following method is for checking if the diagnostic trouble code has been caused by a defective fuel pressure sensor. This can be done by comparing if the fuel pressure sensor's signal (readout in the diagnostic tool) is unstable when actual fuel pressure (readout on pressure gauge connected to fuel system's lines) is stable.

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000) 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 until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check the value on the pressure gauge and the readout value in the diagnostic tool. If the fuel pressure sensor's readout signal is unstable when the actual fuel pressure (readout on pressure gauge connected to fuel system's lines) is stable, this indicates that there is a malfunction in the circuit for the fuel pressure sensor.

Is the fuel pressure sensor OK?

1. YES Refer to «CHECKING COMPONENTS»(ref-476778-S05423887902012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S04464671822012060500000)

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

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

Check fuel lines and fuel filter for clogging and leakage.

Try with a new fuel pump if no malfunction is found in the above troubleshooting.

HINT: The diagnostic trouble code may also have been generated by a defective fuel pump module.

Remedy as necessary.

Other information

1. For replacing fuel pump: «LEVEL SENSOR, FUEL TANK, RIGHT-HAND/FUEL TANK, REPLACING»(ref-476751-S01439095012012060500000)
2. see «FUEL PUMP DRIVER MODULE»(ref-476695-S02740070142012060500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S01795487632012060500000)

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

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are the same. Different values indicate malfunction.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S18920519992012060500000)

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 following method is for checking if the diagnostic trouble code has been caused by a defective fuel pressure sensor. This can be done by comparing if the fuel pressure sensor's signal (readout in the diagnostic tool) is unstable when actual fuel pressure (readout on pressure gauge connected to fuel system's lines) is stable.

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000) 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 until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check the value on the pressure gauge and the readout value in the diagnostic tool. If the fuel pressure sensor's readout signal is unstable when the actual fuel pressure (readout on pressure gauge connected to fuel system's lines) is stable, this indicates that there is a malfunction in the circuit for the fuel pressure sensor.

Is the fuel pressure sensor OK?

1. YES Refer to «CHECKING COMPONENTS»(ref-476778-S37421722472012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S38703914772012060500000)

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

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

Check fuel lines and fuel filter for clogging and leakage.

Try with a new fuel pump if no malfunction is found in the above troubleshooting.

HINT: The diagnostic trouble code may also have been generated by a defective fuel pump module.

Remedy as necessary.

Other information

1. For replacing fuel pump: «LEVEL SENSOR, FUEL TANK, RIGHT-HAND/FUEL TANK, REPLACING»(ref-476751-S01439095012012060500000)
2. see «CONTROL MODULE FUEL PUMP (FP), REPLACING»(ref-476695-S09602766612012060500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S42632504792012060500000)

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

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are the same. Different values indicate malfunction.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S04125184862012060500000)

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

see FAULT-TRACING INFORMATION

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, troubleshooting of these diagnostic trouble codes shall be performed and remedied first.

HINT: The following method is for checking if the diagnostic trouble code has been caused by defective fuel pressure sensor. This can be done by comparing the readout signal from the fuel pressure sensor with actual fuel pressure (readout on pressure gauge connected to fuel system's lines). The method requires accurate calibration of the pressure gauge for measuring the fuel pressure.

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000) CAUTION: The pressure in the fuel system can reach approximately 650 kPa when this diagnostic trouble code (DTC) is stored. Use an adapted manometer.
2. Run the engine until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are the same. Different values indicate malfunction in the circuit for the fuel pressure sensor.

Is the fuel pressure sensor OK?

1. YES Refer to «CHECKING CONTROL OF FUEL PRESSURE»(ref-476778-S25422046832012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S40358993292012060500000)

CHECKING CONTROL OF FUEL PRESSURE

HINT: The following method is for checking the fuel system's pressure by reading out fuel pressure and the fuel pump's working load. If pressure gauge for pressure up to 650 kPa is connected, the fuel pressure sensor can also be checked during the test.

1. Disconnect the pressure gauge if it is not adapted for higher pressures than 650 kPa.
2. Run the engine until it is warm and let it idle.
3. A/C off.
4. Read off fuel pressure and the fuel pump's working load. The upper digital display and the graphic display (red characters) show absolute fuel pressure, calculated from the fuel pressure sensor. The middle digital display (blue characters) shows the fuel pump's current working load to hold current fuel pressure. (Normal value 50% ±10%.) The lower digital display shows the relative fuel pressure (white characters), calculated from the fuel pressure sensor and the atmospheric pressure sensor (=absolute pressure minus atmospheric pressure). If a pressure gauge is connected during the test it shall show this pressure. Check the value for fuel pressure together with the value for the fuel pump's working load. Requested pressure is 380 kPa at idle. Fuel pressure (relative) lower than 380 kPa together with high working load on the fuel pump indicates a malfunction of the pressure control.

Is the function OK?

1. YES Refer to «CHECKING COMPONENTS»(ref-476778-S08503105432012060500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-476778-S05251314582012060500000)

HINT: The malfunction may be intermittent or may be due to the system having low flow capacity.

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

Check fuel lines between fuel pump and the injector's distribution pipes for leakage.

Check the fuel pressure sensor's connector for contact resistance and oxidation.

Check the fuel pump module's connector for contact resistance and oxidation.

Check fuel lines and fuel filter for clogging.

Try with a new fuel pump if no malfunction is found in the above troubleshooting.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000)
2. see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000)
3. For replacing fuel pump: «LEVEL SENSOR, FUEL TANK, RIGHT-HAND/FUEL TANK, REPLACING»(ref-476751-S01439095012012060500000)
4. see «FUEL PUMP DRIVER MODULE»(ref-476695-S02740070142012060500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «INFORMATION»(ref-476778-S24178249072012060500000)

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

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

Check fuel lines and fuel filter for clogging.

If no malfunction is found in the above troubleshooting, try with a new fuel pump.

HINT: The diagnostic trouble code may also have been generated by a defective fuel pump module.

Remedy as necessary.

Other information

1. For replacing fuel pump: «LEVEL SENSOR, FUEL TANK, RIGHT-HAND/FUEL TANK, REPLACING»(ref-476751-S01439095012012060500000)
2. see «FUEL PUMP DRIVER MODULE»(ref-476695-S02740070142012060500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S21776798062012060500000)

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 pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are the same. Different values indicate malfunction.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S03389183762012060500000)

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 work load of the fuel pump. 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 work load. The requested pressure is 380 kPa at idle speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump 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-476778-S03389183762012060500000)

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, troubleshooting of these diagnostic trouble codes shall be performed and remedied first.

HINT: The following method is for checking if the diagnostic trouble code has been caused by defective fuel pressure sensor. This can be done by comparing the readout signal from the fuel pressure sensor with actual fuel pressure (readout on pressure gauge connected to fuel system's lines). The method requires accurate calibration of the pressure gauge for measuring the fuel pressure.

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000) CAUTION: The pressure in the fuel system can reach approximately 650 kPa when this diagnostic trouble code (DTC) is stored. Use an adapted manometer.
2. Run the engine until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are the same. Different values indicate malfunction in the circuit for the fuel pressure sensor.

Is the fuel pressure sensor OK?

1. YES Refer to «CHECKING CONTROL OF FUEL PRESSURE»(ref-476778-S17263577892012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S34238551922012060500000)

HINT: The following method is for checking the fuel system's pressure by reading out fuel pressure and the fuel pump's working load. If pressure gauge for pressure up to 650 kPa is connected, the fuel pressure sensor can also be checked during the test.

1. Disconnect the pressure gauge if it is not adapted for higher pressures than 650 kPa.
2. Run the engine until it is warm and let it idle.
3. A/C off.
4. Read off fuel pressure and the fuel pump's working load. The upper digital display and the graphic display (red characters) show absolute fuel pressure, calculated from the fuel pressure sensor. The middle digital display (blue characters) shows the fuel pump's current working load to hold current fuel pressure. (Normal value 50% ±10%.) The lower digital display shows the relative fuel pressure (white characters), calculated from the fuel pressure sensor and the atmospheric pressure sensor (=absolute pressure minus atmospheric pressure). If a pressure gauge is connected during the test it shall show this pressure. Check the value for fuel pressure together with the value for the fuel pump's working load. Requested pressure is 380 kPa at idle. Fuel pressure (relative) lower than 380 kPa together with high working load on the fuel pump indicates a malfunction of the pressure control.

Is the function OK?

1. YES Refer to «CHECKING COMPONENTS»(ref-476778-S19387413012012060500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-476778-S24411922872012060500000)

HINT: The malfunction may be intermittent or may be due to the system having low flow capacity.

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

Check fuel lines between fuel pump and the injector's distribution pipes for leakage.

Check the fuel pressure sensor's connector for contact resistance and oxidation.

Check the fuel pump module's connector for contact resistance and oxidation.

Check fuel lines and fuel filter for clogging.

Try with a new fuel pump if no malfunction is found in the above troubleshooting.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000)
2. see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000)
3. For replacing fuel pump: «LEVEL SENSOR, FUEL TANK, RIGHT-HAND/FUEL TANK, REPLACING»(ref-476751-S01439095012012060500000)
4. see «CONTROL MODULE FUEL PUMP (FP), REPLACING»(ref-476695-S09602766612012060500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «INFORMATION»(ref-476778-S27484580712012060500000)

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

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

Check fuel lines and fuel filter for clogging.

If no malfunction is found in the above troubleshooting, try with a new fuel pump.

HINT: The diagnostic trouble code may also have been generated by a defective fuel pump module.

Remedy as necessary.

Other information

1. For replacing fuel pump: «LEVEL SENSOR, FUEL TANK, RIGHT-HAND/FUEL TANK, REPLACING»(ref-476751-S01439095012012060500000)
2. see «CONTROL MODULE FUEL PUMP (FP), REPLACING»(ref-476695-S09602766612012060500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S19620827292012060500000)

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 pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are the same. Different values indicate malfunction.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S23173206172012060500000)

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 work load of the fuel pump. 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 work load. The requested pressure is 380 kPa at idle speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump 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-476778-S23173206172012060500000)

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 following method is for checking if the diagnostic trouble code has been caused by a defective fuel pressure sensor. This can be done by comparing the fuel pressure sensor's readout signal with actual fuel pressure (readout on pressure gauge connected to fuel system's lines).

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000) 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 until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are about the same. Different values indicate malfunction in the circuit for the fuel pressure sensor.

Is the fuel pressure sensor OK?

1. YES Refer to «CHECKING COMPONENTS»(ref-476778-S13627251902012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S09477412322012060500000)

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

Try with a new fuel pump module if no malfunction is found in the above troubleshooting.

Remedy as necessary.

Other information

1. see «FUEL PUMP DRIVER MODULE»(ref-476695-S02740070142012060500000)
2. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S10533117372012060500000)

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

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are the same. Different values indicate malfunction.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S06874112842012060500000)

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 work load of the fuel pump. 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 work load. The requested pressure is 380 kPa at idle speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump 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-476778-S06874112842012060500000)

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 following method is for checking if the diagnostic trouble code has been caused by a defective fuel pressure sensor. This can be done by comparing the fuel pressure sensor's readout signal with actual fuel pressure (readout on pressure gauge connected to fuel system's lines).

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000) 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 until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are about the same. Different values indicate malfunction in the circuit for the fuel pressure sensor.

Is the fuel pressure sensor OK?

1. YES Refer to «CHECKING COMPONENTS»(ref-476778-S19199550282012060500000)
2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S13046600582012060500000)

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

Try with a new fuel pump module if no malfunction is found in the above troubleshooting.

Remedy as necessary.

Other information

1. see «CONTROL MODULE FUEL PUMP (FP), REPLACING»(ref-476695-S09602766612012060500000)
2. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S04633683762012060500000)

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

1. Connect pressure gauge: «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
2. Run the engine until it is warm and let it idle.
3. A/C off. Read off relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor's and the atmospheric pressure sensor's signal (=absolute pressure minus atmospheric pressure). Check that the value on the pressure gauge and the readout value are the same. Different values indicate malfunction.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S17684324772012060500000)

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 work load of the fuel pump. 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 work load. The requested pressure is 380 kPa at idle speed. A (relative) fuel pressure lower than 380 kPa together with a high fuel pump 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-476778-S17684324772012060500000)

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

1. Ignition on Check whether the fault is permanent or intermittent by reading off the mass air flow (MAF) sensor signal. Check that the signal is approximately 5-6 g/s with the engine idling at operating temperature.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S39059760412012060500000)

Scheme 328

1. Ignition off
2. Disconnect the engine control module (ECM). Check the signal cable. Check for a short-circuit to ground. Check the signal cable with regard to open circuit. Take readings between control module terminal #A70 (#B10) and mass air flow (MAF) sensor terminal #3. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S30437390172012060500000) see «SIGNAL SPECIFICATION»(ref-476694-S14228516802012060500000) see «MASS AIR FLOW SENSOR (MAF)»(ref-476751-S41162664152012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S41914484962012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start and run the engine to operating temperature. Read off the mass air flow (MAF) sensor signal using the VCT2000 (or appropriate scan tool). Check that the signal is approximately 5-6 g/s with the engine idling at operating temperature. Check that the signal from the mass air flow (MAF) sensor is correct.

Is the signal correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S03732624702012060500000)

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

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. Reinstall the connectors, components etc.
3. Start the engine and run it to normal operating temperature. Check and compare the calculated air mass with the actual, read-out from mass air flow sensor. Use the VCT2000 (or appropriate scan tool).

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S38355275782012060500000)

see FAULT-TRACING

see FAULT-TRACING

1. Ignition on Check whether the fault is permanent or intermittent by reading off the mass air flow (MAF) sensor signal. Check that the signal is approximately 5-6 g/s with the engine idling at operating temperature.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S02043036032012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start and run the engine to operating temperature. Read off the mass air flow (MAF) sensor signal using the VCT2000 (or appropriate scan tool). Check that the signal is approximately 5-6 g/s with the engine idling at operating temperature. Check that the signal from the mass air flow (MAF) sensor is correct.

Is the signal correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S06480521682012060500000)

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

1. Ignition on Check whether the fault is permanent or intermittent by reading off the mass air flow (MAF) sensor signal. Check that the signal is approximately 5-6 g/s with the engine idling at operating temperature.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S27864740342012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start and run the engine to operating temperature. Read off the mass air flow (MAF) sensor signal using the VCT2000 (or appropriate scan tool). Check that the signal is approximately 5-6 g/s with the engine idling at operating temperature. Check that the signal from the mass air flow (MAF) sensor is correct.

Is the signal correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S38447575872012060500000)

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

CHECKING THE CONNECTORS AND HOSE CONNECTOR

Check the hose connectors on the intake manifold for damage and leakage.

Check the connector and terminals on the pressure sensor. Check for contact resistance. Check for oxidation.

Remedy as necessary.

Other information

1. see «MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR»(ref-476695-S01894115992012060500000)
2. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)

Scheme 329

Scheme 330

1. Continue Refer to «VERIFICATION»(ref-476778-S02153706162012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Read off the pressure sensor signal for intake pressure and the atmospheric pressure sensor signal using the VCT2000 (or appropriate scan tool). Check that the values correspond. The atmospheric pressure sensor signal is used as a reference value in this check.

Is the value within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S14612563442012060500000)

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

Check the hose connectors on the intake manifold for damage and leakage.

Check the connector and terminals on the pressure sensor. Check for contact resistance. Check for oxidation.

Remedy as necessary.

Other information

1. see «MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR, REPLACING»(ref-476695-S36568359592012060500000)
2. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S20870529772012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Read off the pressure sensor signal for intake pressure and the atmospheric pressure sensor signal using the VCT2000 (or appropriate scan tool). Check that the values correspond. The atmospheric pressure sensor signal is used as a reference value in this check.

Is the value within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S12076967442012060500000)

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

1. Ignition on Check whether the fault is permanent or intermittent. Read off the pressure sensor signal for intake pressure and the atmospheric pressure sensor signal. Check that the values are approximately the same. HINT: The atmospheric pressure sensor signal is used as a reference value for the pressure sensor signal for intake pressure. The fault is permanent if the values do not correspond. If the values do not correspond, it indicates that the fault is intermittent and not presently active.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S15463959662012060500000)

Scheme 331

1. Ignition off
2. Disconnect the engine control module (ECM). Check the signal cable. Check for a short-circuit to ground. Take readings between control module terminal #A69 (#B09) and pressure sensor terminal #1. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000) see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000) see «MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR, REPLACING»(ref-476695-S36568359592012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S03627879592012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Read off the pressure sensor signal for intake pressure and the atmospheric pressure sensor signal using the VCT2000 (or appropriate scan tool). Check that the values correspond. The atmospheric pressure sensor signal is used as a reference value in this check.

Is the value within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S20393545272012060500000)

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

1. Ignition on Check whether the fault is permanent or intermittent. Read off the pressure sensor signal for intake pressure and the atmospheric pressure sensor signal. Check that the values are approximately the same. HINT: The atmospheric pressure sensor signal is used as a reference value for the pressure sensor signal for intake pressure. The fault is permanent if the values do not correspond. If the values do not correspond, it indicates that the fault is intermittent and not presently active.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S37534724032012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Read off the pressure sensor signal for intake pressure and the atmospheric pressure sensor signal using the VCT2000 (or appropriate scan tool). Check that the values correspond. The atmospheric pressure sensor signal is used as a reference value in this check.

Is the value within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S08020057442012060500000)

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

1. Start the engine. Check whether the fault is permanent or intermittent by reading the signal of the air temperature sensor. Check that the value is feasible. If the value is not feasible, the fault is permanent. If the value is feasible, the fault is intermittent and not currently active.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S15150929622012060500000)

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. Reinstall the connectors, components etc.
3. Ignition on Read off the intake air temperature sensor's signal using the VCT2000 (or appropriate scan tool). Check that the signal is within its permitted range.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S11266340502012060500000)

see FAULT TRACING

1. Start the engine. Check whether the fault is permanent or intermittent by reading the signal of the air temperature sensor. Check that the value is feasible. If the value is not feasible, the fault is permanent. If the value is feasible, the fault is intermittent and not currently active.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S36208089482012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Read off the intake air temperature sensor's signal using the VCT2000 (or appropriate scan tool). Check that the signal is within its permitted range.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S04715853152012060500000)

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

1. Start the engine. Check whether the fault is permanent or intermittent by reading the signal of the air temperature sensor. Check that the value is feasible. If the value is not feasible, the fault is permanent. If the value is feasible, the fault is intermittent and not currently active.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S39274316542012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Read off the intake air temperature sensor's signal using the VCT2000 (or appropriate scan tool). Check that the signal is within its permitted range.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S29079062202012060500000)

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

1. Start the engine. Check whether the fault is permanent or intermittent by reading the signal of the air temperature sensor. Check that the value is feasible. If the value is not feasible, the fault is permanent. If the value is feasible, the fault is intermittent and not currently active.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S38329861812012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Read off the intake air temperature sensor's signal using the VCT2000 (or appropriate scan tool). Check that the signal is within its permitted range.

Is the signal within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S30054779702012060500000)

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. Check whether the fault is permanent or intermittent. Read off the engine coolant temperature sensor signal. Check that the value is within its permitted range. The fault is permanent if the value is not within its permitted range. If the value is within its permitted range, the fault is intermittent and not presently active.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S35162904822012060500000)

Scheme 332

1. Ignition off Check the engine coolant temperature (ECT) sensor connector and terminals. Check for contact resistance and oxidation. Check the engine coolant temperature (ECT) sensor resistance. Take readings between terminals #1 and #2. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S30437390172012060500000) see «SIGNAL SPECIFICATION»(ref-476694-S14228516802012060500000) see «COMPONENT SPECIFICATIONS»(ref-476694-S39749312632012060500000) see «MASS AIR FLOW SENSOR (MAF)»(ref-476751-S41162664152012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S34513136022012060500000)

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. Reinstall the connectors, components etc.
3. Ignition on Read the engine temperature sensor signal using the VCT2000 (or appropriate scan tool). Check that the signal corresponds with the engine temperature.

Does the signal correspond to the engine temperature?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S37610610362012060500000)

see FAULT-TRACING

1. Start the engine. Check whether the fault is permanent or intermittent. Read off the engine coolant temperature sensor signal. Check that the value is within its permitted range. The fault is permanent if the value is not within its permitted range. If the value is within its permitted range, the fault is intermittent and not presently active.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S13276106502012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Read the engine temperature sensor signal using the VCT2000 (or appropriate scan tool). Check that the signal corresponds with the engine temperature.

Does the signal correspond to the engine temperature?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S11770326942012060500000)

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

1. Start the engine. Check whether the fault is permanent or intermittent by reading the signal of the engine temperature sensor. Check that the value is feasible. If the value is not feasible, the fault is permanent. If the value is feasible, the fault is intermittent and not currently active.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S07794475602012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Read the engine temperature sensor signal using the VCT2000 (or appropriate scan tool). Check that the signal corresponds with the engine temperature.

Does the signal correspond to the engine temperature?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S40388129192012060500000)

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

1. Start the engine. Check whether the fault is permanent or intermittent by reading the signal of the engine temperature sensor. Check that the value is feasible. If the value is not feasible, the fault is permanent. If the value is feasible, the fault is intermittent and not currently active.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S10371186442012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Read the engine temperature sensor signal using the VCT2000 (or appropriate scan tool). Check that the signal corresponds with the engine temperature.

Does the signal correspond to the engine temperature?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S03489781982012060500000)

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

see FAULT-TRACING

1. Ignition on Check if the malfunction is permanent or intermittent by activating readout of the accelerator pedal position sensor's signals. Check that the value for both signals at unaffected accelerator pedal is approx. 8% and when the pedal is fully pressed down approx. 82%. If the signal is incorrect, this indicates that the malfunction is permanent. If the signal is correct, this indicates that the malfunction is intermittent and not active right now.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S11843251622012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Activate readout of the accelerator pedal position sensor's signals. Check that the value for both signals at unaffected accelerator pedal is approx. 8% and when the pedal is fully pressed down approx. 82%.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S31259834832012060500000)

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 if the malfunction is permanent or intermittent by activating readout of the accelerator pedal position sensor's signals. Check that the value for both signals at unaffected accelerator pedal is approx. 8% and when the pedal is fully pressed down approx. 82%. If the signal is incorrect, this indicates that the malfunction is permanent. If the signal is correct, this indicates that the malfunction is intermittent and not active right now.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S11786969292012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Activate readout of the accelerator pedal position sensor's signals. Check that the value for both signals at unaffected accelerator pedal is approx. 8% and when the pedal is fully pressed down approx. 82%.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S39993334982012060500000)

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 THERMOSTAT

Note. This diagnostic trouble code (DTC) is stored if the engine temperature sensor freezes. This may happen if the coolant level is low or there is too little glycol in the coolant. Check the coolant level and its freezing point.

Engine control module (ECM) has registered that the actual temperature increase has deviated from the calculated temperature increase. This deviation is probably due to a damaged thermostat.

Check cables and connectors between engine control module (ECM) and engine temperature sensor for contact resistance and oxidation.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION»(ref-476694-S14228516802012060500000)
2. see «THERMOSTAT»(ref-476760-S27849787012012060500000)
3. see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-476695-S04377291192012060500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)

1. Continue Refer to «CHECKING THE STATUS»(ref-476778-S33342368732012060500000)

1. Start the engine.

Check whether the fault is permanent or intermittent by reading off the signal from the engine coolant temperature (ECT) sensor. Check that the value is within its permitted range.

The fault is permanent if the value is not within its permitted range. Check that the value is within its permitted range.

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476778-S30123883962012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on Read the engine temperature sensor signal using the VCT2000 (or appropriate scan tool). Check that the signal corresponds with the engine temperature.

Does the signal correspond to the engine temperature?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S35816285972012060500000)

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. This diagnostic trouble code (DTC) is stored if the engine temperature sensor freezes. This may happen if the coolant level is low or there is too little glycol in the coolant. Check the coolant level and its freezing point.

Engine control module (ECM) has registered that the actual temperature increase has deviated from the calculated temperature increase. This deviation is probably due to a damaged thermostat.

Check cables and connectors between engine control module (ECM) and engine temperature sensor for contact resistance and oxidation.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000)
2. see «THERMOSTAT, REPLACING»(ref-476760-S42255354742012060500000)
3. see «TEMPERATURE SENSOR ENGINE COOLANT, REPLACING»(ref-476695-S06809288202012060500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)

1. Continue Refer to «INFORMATION»(ref-476778-S07896699492012060500000)

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.

see FAULT-TRACING

see FAULT-TRACING

see FAULT-TRACING

see FAULT-TRACING

see FAULT-TRACING

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 found".

1. Continue Refer to «CHECKING COMPONENTS»(ref-476778-S31555823762012060500000)

Check the front heated oxygen sensor (HO2S) connector (bank 1). Check for contact resistance and oxidation.

Try a new rear heated oxygen sensor if the above measure does not remedy the fault.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S30437390172012060500000)
2. see «SIGNAL SPECIFICATION»(ref-476694-S14228516802012060500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-476768-S18546887202012060500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S36281351802012060500000)

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 repairing, it is necessary to check that the malfunction has been fixed.

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine to perform the diagnosis. Read off the diagnostic status and trouble status for the diagnostic trouble code. Check that the diagnosis is "Implemented" and that the trouble status is "No malfunction found". If the trouble status is "Malfunction found", this indicates defective function.

Trouble status shows "No malfunction found"?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S30228800712012060500000)

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 found".

1. Continue Refer to «CHECKING COMPONENTS»(ref-476778-S34873838672012060500000)

Check the front heated oxygen sensor (HO2S) connector (bank 1). 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 «CONNECTING THE BREAKOUT BOX»(ref-476691-S27857399862012060500000)
2. see «SIGNAL SPECIFICATION, ENGINE CONTROL MODULE (ECM)»(ref-476694-S30016655152012060500000)
3. see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S40343228252012060500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

1. Continue Refer to «VERIFICATION»(ref-476778-S40684770872012060500000)

HINT: After repairing, it is necessary to check that the malfunction has been fixed.

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine to perform the diagnosis. Read off the diagnostic status and trouble status for the diagnostic trouble code. Check that the diagnosis is "Implemented" and that the trouble status is "No malfunction found". If the trouble status is "Malfunction found", this indicates defective function.

Trouble status shows "No malfunction found"?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476778-S17118205602012060500000)

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.