Engine Control Module (ECM) Diagnostic Trouble Codes (Xc) - 2 of 9: Other Volvo V70 II

Verification

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

Scheme 537

Scheme 538

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Start the engine and run it until the engine coolant temperature exceeds 60 °C
4. Switch off the engine and allow it to cool (below 40 °C)
5. Test drive the car on the road (engine speed (RPM) above 2000 RPM, never idling) for at least 15 minutes
6. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S21685575062011101900000)

Fault-tracing information

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

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

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

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Start the engine and run it until the engine coolant temperature exceeds 60 °C
4. Switch off the engine and allow it to cool (below 40 °C)
5. Test drive the car on the road (engine speed (RPM) above 2000 RPM, never idling) for at least 15 minutes
6. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S34226383302011101900000)

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 status

1. Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed to 2500 RPM until the diagnostic is "Complete". Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic. 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.

1. Continue Refer to «Checking the components and wiring»(ref-430973-S36232268942011101900000)

Resistance values

1. For turbocharged engines 2001, see «Component specifications»(ref-430975-S12681654262011101900000) .
2. For turbocharged engines 2002, see «Component specifications»(ref-430975-S24294221072011101900000) .
3. For B5254T4 2004-, see «Component specifications»(ref-430975-S19541977602011101900000) .
4. For 5-cylinder normally aspirated engines 1999-, see «Component specifications»(ref-451848-S36406831262012020900000)

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

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed to 2500 RPM until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S22472586722011101900000)

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. Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed to 2500 RPM until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S07677106862011101900000)

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. Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed to 2500 RPM until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S35914183742011101900000)

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. Start the engine. Allow the engine to run at idle speed for 10 minutes
4. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S00193596872011101900000)

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).

Signal missing. Intermittent fault

See Signal missing. Intermittent fault

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

1. Ignition off.
2. Reconnect connectors, reinstall components etc.
3. Ignition on.
4. Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S07275415192011101900000)

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. Permanent fault

See Signal missing. Permanent fault

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).

Signal too high. Intermittent fault

See Signal too high. Intermittent fault

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

1. Ignition off.
2. Reconnect connectors, reinstall components etc.
3. Ignition on.
4. Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S34252677292011101900000)

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. Permanent fault

See Signal too high. Permanent fault

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).

Signal too low. Intermittent fault

See Signal too low. Intermittent fault

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

1. Ignition off.
2. Reconnect connectors, reinstall components etc.
3. Ignition on.
4. Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S17705141562011101900000)

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. Permanent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

Checking the connector

Check the connector for the rear heated oxygen sensor (HO2S). Check for contact resistance and oxidation. Remedy if necessary.

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

Other information

1. To access or replace the heated oxygen sensor (HO2S): For B5xx4T -2004, see «Heated oxygen sensors (HO2S), replacing»(ref-430985-S33960067052011101900000) For B5xx4T 2005-, see «Heated oxygen sensor (HO2S), replacing»(ref-430985-S28241031382011101900000) .
2. See «Checking wiring and terminals»(ref-430909-S26456997912011101900000)

1. Continue Refer to «Verification»(ref-430973-S13441736542011101900000)

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

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Start the engine. Allow the engine to idle for at least 1 minute
4. Test drive the car at an even speed (approximately 80 km/h for at least 5 minutes)
5. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S21856976992011101900000)

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).

See Signal too low. Intermittent fault

Checking cables

Check the cable between engine control module (ECM) #B45 (#B55) and central electronic module #14B (#A34) for a short-circuit to ground according to Short-circuit to ground, permanent faults and for open-circuits according to Open-circuit, permanent faults

Remedy as necessary

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-430911-S30587875092011101900000) .
2. To connect the central electronic module breakout box, see «Connecting the breakout box»(ref-430921-S33749793132011101900000) .
3. For information about signals: For 5 cylinder turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For 5 cylinder turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «SIGNAL SPECIFICATION (B5204T5, B5234T3, B5234T7 AND B5244T3 -2004)»(ref-430960-S25929380012012010600000) For B5254T4 2004, see «SIGNAL SPECIFICATION (B5254T4 2004)»(ref-430960-S08864610392012010600000) For 5 cylinder turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) .

1. Continue Refer to «Verification»(ref-430973-S40961061752011101900000)

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 fuel pump input signal for the central electronic module (CEM) from the engine control module (ECM). Start the engine and check that the fuel pump (FP) input signal to the central electronic module (CEM) changes status.

Does the status of the input signal change?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S01403408732011101900000)

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

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

See Signal too low. Permanent fault

Check the cable between engine control module (ECM) #B45 (#B55) and central electronic module #14B (#A34) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-430911-S30587875092011101900000) .
2. To connect the central electronic module breakout box, see «Connecting the breakout box»(ref-430921-S33749793132011101900000) .
3. For information about signals: For 5 cylinder turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For 5 cylinder turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «SIGNAL SPECIFICATION (B5204T5, B5234T3, B5234T7 AND B5244T3 -2004)»(ref-430960-S25929380012012010600000) For B5254T4 2004, see «SIGNAL SPECIFICATION (B5254T4 2004)»(ref-430960-S08864610392012010600000) For 5 cylinder turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) .

1. Continue Refer to «Information»(ref-430973-S30704094862011101900000)

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).

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

Check the cable between engine control module (ECM) #B45 (#B55) and central electronic module #14B (#A34) for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

Remedy as necessary

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-430911-S30587875092011101900000) .
2. To connect the central electronic module breakout box, see «Connecting the breakout box»(ref-430921-S33749793132011101900000) .
3. For information about signals: For 5 cylinder turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For 5 cylinder turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «SIGNAL SPECIFICATION (B5204T5, B5234T3, B5234T7 AND B5244T3 -2004)»(ref-430960-S25929380012012010600000) For B5254T4 2004, see «SIGNAL SPECIFICATION (B5254T4 2004)»(ref-430960-S08864610392012010600000) For 5 cylinder turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) .

1. Continue Refer to «Verification»(ref-430973-S33017305402011101900000)

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 fuel pump input signal for the central electronic module (CEM) from the engine control module (ECM). Start the engine and check that the fuel pump (FP) input signal to the central electronic module (CEM) changes status.

Does the status of the input signal change?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S32200121732011101900000)

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

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

See Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

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

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Start the engine. Allow the engine to idle for at least 1 minute
4. Test drive the car at an even speed (approximately 80 km/h for at least 5 minutes)
5. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S33360866152011101900000)

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/Signal too low/Signal missing

See Signal too high/Signal too low/Signal missing

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 and perform a TRIP schedule: «Verifying repairs»(ref-430972-S31879278172011101900000)
4. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the dynamic for the front heated oxygen sensor (HO2S). The value should be higher than 1.0.

Is the value OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S24182482612011101900000)

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. Allow the engine to cool (to below 40 °C). Then start the engine
4. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S25702546012011101900000)

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

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

See Signal too high/Signal too low/Signal missing

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 at an even speed (engine speed (RPM) above 2000 RPM) for at least 5 minutes
4. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S13561751812011101900000)

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. Test drive the car at an even speed (engine speed (RPM) above 2000 RPM) for at least 5 minutes
4. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S29794695272011101900000)

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. Test drive the car at an even speed (engine speed (RPM) above 2000 RPM) for at least 5 minutes
4. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S27706904282011101900000)

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.

Internal fault

See Internal fault

See Internal fault

See Internal fault

See Internal fault

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 at an even speed (engine speed (RPM) above 2000 RPM) for at least 5 minutes
4. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S34297339342011101900000)

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. Test drive the car at an even speed (engine speed (RPM) above 2000 RPM) for at least 5 minutes
4. Release the accelerator pedal (AP) quickly at least three times to simulate fuel shut-off
5. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S17880997822011101900000)

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 / Signal missing / Faulty signal

See Signal too high / Signal missing / Faulty signal

See Signal too high / Signal missing / Faulty signal

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 at an even speed (engine speed (RPM) above 2000 RPM) for at least 5 minutes
4. Release the accelerator pedal (AP) quickly at least three times to simulate fuel shut-off
5. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S16743193612011101900000)

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. Test drive the car at an even speed (engine speed (RPM) above 2000 RPM) for at least 5 minutes
4. Release the accelerator pedal (AP) quickly at least three times to simulate fuel shut-off
5. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S21331056852011101900000)

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. Test drive the car at an even speed (engine speed (RPM) above 2000 RPM) for at least 5 minutes
4. Release the accelerator pedal (AP) quickly at least three times to simulate fuel shut-off
5. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S24082663432011101900000)

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 injection system for leakage

1. Check the fuel injection system for leakage
2. Remedy as necessary. If no faults are found during the checks and the fault recurs as permanent, replace both heated oxygen sensors (HO2S). Other information: To access or replace the heated oxygen sensor (HO2S): For B5xx4T -2004, see «Heated oxygen sensors (HO2S), replacing»(ref-430985-S33960067052011101900000) For B5xx4T 2005-, see «Heated oxygen sensor (HO2S), replacing»(ref-430985-S28241031382011101900000) .

1. Continue Refer to «Verification»(ref-430973-S02409402392011101900000)

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

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Start the engine. Allow the engine to idle for 10 minutes
4. Read off diagnostic trouble codes (DTCs). The fault has been remedied if status of the diagnostic trouble code (DTC) is intermittent.

Is the status of the diagnostic trouble code (DTC) intermittent?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S12191906822011101900000)

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. Test drive the car at an even speed (engine speed (RPM) above 2000 RPM) for at least 5 minutes
4. Release the accelerator pedal (AP) quickly at least three times to simulate fuel shut-off
5. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S22026445242011101900000)

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 components

Check the exhaust system for air leakage.

Check the cable for a short-circuit to supply voltage or ground.

Check between

1. The cable between engine control module (ECM) terminal #A42 (#A42) and heated oxygen sensor (HO2S) terminal #5
2. The cable for pump current between engine control module (ECM) terminal #A24 (#A24) and heated oxygen sensor (HO2S) terminal #6
3. The cable for calibration current between engine control module (ECM) terminal #A28 (#A28) and heated oxygen sensor (HO2S) terminal #2.

Check the cable between engine control module (ECM) terminal #A41 (#A41) and heated oxygen sensor (HO2S) terminal #1. Check for an open-circuit.

HINT: If the above fault-tracing does not remedy the fault, try replacing the heated oxygen sensors (HO2S), as the diagnostic trouble code (DTC) can also be stored by a damaged front/rear heated oxygen sensor (HO2S).

Remedy as necessary.

Other information

1. To check the exhaust system for air leakage: For 1999 model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S39198480602012020900000) . For 2000- model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S06274629062012020900000) .
2. To access or replace the heated oxygen sensor (HO2S): For B5xx4T -2004, see «Heated oxygen sensors (HO2S), replacing»(ref-430985-S33960067052011101900000) For B5xx4T 2005-, see «Heated oxygen sensor (HO2S), replacing»(ref-430985-S28241031382011101900000) .
3. See «Checking wiring and terminals»(ref-430909-S26456997912011101900000)

1. Continue Refer to «Verification»(ref-430973-S40817402612011101900000)

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 at an even speed (engine speed (RPM) above 2000 RPM) for at least 10 minutes
4. Release the accelerator pedal (AP) quickly at least three times to simulate fuel shut-off
5. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read out the deviation between the front and rear heated oxygen sensor (HO2S). Check that the value is between -0.03 and +0.03.

Is the value OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S21179323922011101900000)

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 connectors for the heated oxygen sensors (HO2S). Check for contact resistance. Check for oxidation.

Check the exhaust system for air leakage.

HINT: If the above fault-tracing does not remedy the fault, try replacing the heated oxygen sensors (HO2S), as the diagnostic trouble code (DTC) can also be stored by a damaged front/rear heated oxygen sensor (HO2S).

Remedy as necessary.

Other information

1. To check the exhaust system for air leakage: For 1999 model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S39198480602012020900000) . For 2000- model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S06274629062012020900000) .
2. To access or replace the heated oxygen sensor (HO2S): For B5xx4T -2004, see «Heated oxygen sensors (HO2S), replacing»(ref-430985-S33960067052011101900000) For B5xx4T 2005-, see «Heated oxygen sensor (HO2S), replacing»(ref-430985-S28241031382011101900000) .
3. See «Checking wiring and terminals»(ref-430909-S26456997912011101900000)

1. Continue Refer to «Verification»(ref-430973-S41929045482011101900000)

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 at an even speed (engine speed (RPM) above 2000 RPM) for at least 10 minutes
4. Release the accelerator pedal (AP) quickly at least three times to simulate fuel shut-off
5. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read out the deviation between the front and rear heated oxygen sensor (HO2S). Check that the value is between -0.03 and +0.03.

Is the value OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S33928487482011101900000)

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 exhaust system for air leakage

HINT: If the above fault-tracing does not remedy the fault, try replacing the heated oxygen sensors (HO2S), as the diagnostic trouble code (DTC) can also be stored by a damaged front/rear heated oxygen sensor (HO2S).

Remedy as necessary.

Other information

1. To check the exhaust system for air leakage: For 1999 model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S39198480602012020900000) . For 2000- model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S06274629062012020900000) .
2. To access or replace the heated oxygen sensor (HO2S): For B5xx4T -2004, see «Heated oxygen sensors (HO2S), replacing»(ref-430985-S33960067052011101900000) For B5xx4T 2005-, see «Heated oxygen sensor (HO2S), replacing»(ref-430985-S28241031382011101900000) .
3. See «Checking wiring and terminals»(ref-430909-S26456997912011101900000)

1. Continue Refer to «Verification»(ref-430973-S13942450192011101900000)

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 at an even speed (engine speed (RPM) above 2000 RPM) for at least 10 minutes
4. Release the accelerator pedal (AP) quickly at least three times to simulate fuel shut-off
5. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read out the deviation between the front and rear heated oxygen sensor (HO2S). Check that the value is between -0.03 and +0.03.

Is the value OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S00500110022011101900000)

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 / Signal too low

See Signal too high / Signal too low

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 at an even speed (engine speed (RPM) above 2000 RPM) for at least 5 minutes
4. Release the accelerator pedal (AP) quickly at least three times to simulate fuel shut-off
5. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S29621019092011101900000)

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 injection system

Check intake system for air leakage according to Check for air leaks in the intake system .

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

1. For 1999 model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S39198480602012020900000) .
2. For 2000- model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S06274629062012020900000) .

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-430973-S04094713772011101900000)
2. NO Refer to «Checking mass air flow (MAF) sensor»(ref-430973-S25973768752011101900000)

Preparations

Check that all hoses are undamaged and are in place with their hose clips tightened.

Connecting

Remove fresh air hose from mass air flow (MAF) sensor.

Install tool 9995545 with pressure regulator 9995544 on fresh air hose and tighten hose clamp.

Use hose clip to seal crankcase ventilation hose.

Remove oil filler cap.

Remove the lower hose from the canister purge (CP) valve.

Scheme 539

Connect the compressed air hose and adjust the regulator to obtain a pressure of maximum 0.3 bar .

A gentle hissing sound can be heard from the oil filler opening. This is due to the opening of an intake valve and the leakage of cylinder pressure past the piston rings.

If a leak is suspected spray a soap solution onto the area.

Small bubbles are permissible between throttle body (TB) and intake hose (if made of plastic). No bubbles are permissible with rubber hose.

Check for air leakage from canister purge (CP) valve. No leakage is permissible.

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 «Mass air flow sensor (MAF), replacing»(ref-430973-S23704484032012010900000) .

1. Continue Refer to «Verification»(ref-430973-S04094713772011101900000)

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 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-430973-S01268433872011101900000)
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.

Scheme 540

Remove the pipe between the air cleaner (ACL) and the turbo / throttle body at the mass air flow (MAF) sensor.

Disconnect the connector from mass air flow (MAF) sensor.

Remove the screws holding the mass air flow (MAF) sensor to the air cleaner (ACL) cover.

Pull and work the mass air flow (MAF) sensor loose from the air cleaner (ACL) cover.

Installing the mass air flow (MAF) sensor

Note. Apply water to the O-ring in the air filter cover to facilitate installation of the mass air flow sensor.

Install the new mass air flow (MAF) sensor.

Press the mass air flow (MAF) sensor into place.

Install the screws. Tighten.

Install the pipe on the mass air flow (MAF) sensor.

Connect the mass air flow (MAF) sensor connector.

Lower limit

See Lower limit

Check the induction system for air leaks. See. Air leakage in the intake system, checking

HINT: Air leakage in the intake system can occur through the evaporative emission system (EVAP) 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-430973-S37480958952011101900000)

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-430973-S06619205212012010900000)

Scheme 541

1. Continue Refer to «Verification»(ref-430973-S33913465272011101900000)

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 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-430973-S15010958932011101900000)
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.

Choosing a method for taking a reading

Note. For vehicles with demand activated fuel pumps (FP), see VIDA vehicle communication Quick test of fuel pump (FP).

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-430973-S11595257162011101900000)

Scheme 542

1. Connect the pressure gauge according to «Connecting fuel pressure gauge»(ref-430973-S03634394722012010900000)
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 the location of and to replace the fuel pump (FP) relay, see «Central electronic module (CEM), replacing»(ref-430924-S13972874222011101900000) For the location of and to replace the fuel pump (FP), see «Right side fuel pump with level sensor»(ref-451850-S42179980212012020900000) See «Replacing the fuel filter»(ref-430965-S41814706002011101900000) To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-430973-S22986405232012010900000) .

Is the rest pressure to be checked?

1. YES Refer to «Checking the residual pressure»(ref-430973-S04370847602011101900000)
2. NO Refer to «Checking the fuel injection system»(ref-430973-S41177091122011101900000)

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-430965-S17789992482011101900000) For the location of and to replace the fuel pump (FP) relay, see «Central electronic module (CEM), replacing»(ref-430924-S13972874222011101900000) For the location of and to replace the fuel pump (FP), see «Right side fuel pump with level sensor»(ref-451850-S42179980212012020900000) To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-430973-S22986405232012010900000) .

1. Continue Refer to «Checking the fuel injection system»(ref-430973-S41177091122011101900000)

Mass air flow (MAF) sensor, replacing

Note. As the illustrations in this service information are used for different model years and / or models, some variation may occur. However, the essential information in the illustrations is always correct.

Scheme 543

Remove

1. the inlet hose from the mass air flow (MAF) sensor
2. the connector from the mass air flow (MAF) sensor
3. the screws securing the mass air flow (MAF) sensor to the air cleaner (ACL) cover.

Pull and work the mass air flow (MAF) sensor loose from the air cleaner (ACL) cover.

Note. Apply water to the O-ring in the air cleaner (ACL) cover to facilitate installation of the mass air flow (MAF) sensor.

Install the new mass air flow (MAF) sensor.

Press the mass air flow (MAF) sensor into place.

Install the screws. Tighten.

Install the inlet hose on the mass air flow (MAF) sensor. Tighten the hose clamp.

Press the connector for the mass air flow (MAF) sensor into place.

Scheme 544

1. Supplement pressure gauge «9995011»(ref-403953-S13051471402011061000000) with adapter «9989725»(ref-403953-S30652708112011061000000) and nipple «9995479»(ref-403953-S17462459562011061000000) before use.
2. Connect adapter to valve on fuel rail, with adapter in locked position (valve closed, refer to "1" in illustration).
3. Turn pressure gauge cock towards nipple «9995479»(ref-403953-S17462459562011061000000) .
4. Connect pressure gauge second connector to fuel draining unit «9812270»(ref-403953-S06137301002011061000000) , «9812273»(ref-403953-S13586864282011061000000) and «9812282»(ref-403953-S26175172122011061000000) .
5. Unlock adapter (valve open, refer to "2" in illustration).

Scheme 545

1. Ignition off.
2. Start draining unit.
3. Turn pressure gauge cock to mid-position.
4. Lock adapter (valve closed, refer to "1" in illustration).
5. Disconnect adapter from valve.
6. Stop draining unit.
7. Reinstall equipment.

Taking fuel pressure readings while driving the car

Special tools

9995011

9512614

9812270

9812273

9812282

Scheme 546

Corrective actions

1. Assemble fuel pressure gauge «9995011»(ref-403953-S13051471402011061000000) and new adapter hose 951 2614 .
2. Use foam wrapping around the fuel pressure gauge and all metal joints to avoid scratching the interior of the car or damaging the exterior paintwork.

Scheme 547

Corrective actions

1. Remove protective cap from the fuel pressure line nipple.
2. Install the adapter hose nipple loosely on the nipple on the fuel pressure line. The nipple will be tightened later.
3. Arrange hose as shown in the illustration.

Scheme 548

1. Install the T-valve to the left door mirror using tape. NOTE: Protect the door mirror and wing edge with foam protection as shown in the illustration.

Scheme 549

The unit must be operating when the measuring equipment's hose is connected to the engine in order to reduce the risk of fuel spillage.

Corrective actions

1. Connect the fuel drainage unit hose to the T-valve on the door mirror (position "3" in the illustration).
2. Turn the T-valve cock to the middle position (position "2" in the illustration).
3. Start the evacuation unit to get suction in the measurement unit hose to the engine.

Scheme 550

Corrective actions

1. Tighten nipple on fuel rail.

Scheme 551

1. Turn the T-valve cock so that it is pointing toward the engine (position "1" in the illustration) to shut off the suction from the evacuation equipment.

Scheme 552

1. Use a tie strap to lock the cock in the position toward the engine.

Scheme 553

1. Remove the draining unit hose from the T-valve hose connector.
2. Turn off the evacuation unit when the hose is empty.
3. Arrange the measuring equipment hose along the rubber list on plenum chamber cover at the left bonnet hinge in such a position that the hose and bonnet are not damaged (as shown in illustration).
4. Carefully close the hood.

Scheme 554

Corrective actions

1. Start the engine.
2. Drive the car and read off fuel pressure while the car is being driven. The fuel pressure should be: 375-395 kPa (54.4 - 57.3 psi) .

Scheme 555

Corrective actions

1. Connect the evacuation unit hose to the hose nipple on the door mirror (see black arrow in illustration).
2. Start the evacuation unit so there is suction in the hose.

Corrective actions

1. Remove the tie strap locking the cock on the T-nipple.
2. Turn the cock to the middle position (position 2) to obtain suction in the hose to the nipple in the fuel manifold on the engine.

Upper limit

See Upper limit

Check intake system for air leakage according to Check for air leaks in the intake system .

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.

1. For 1999 model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S39198480602012020900000) .
2. For 2000- model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S06274629062012020900000) .

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-430973-S22789127332011101900000)
2. NO Refer to «Checking mass air flow (MAF) sensor»(ref-430973-S37827490772011101900000)

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 «Mass air flow sensor (MAF), replacing»(ref-430973-S23704484032012010900000) .

1. Continue Refer to «Verification»(ref-430973-S22789127332011101900000)

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 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-430973-S03412629182011101900000)
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 Lower limit

Checking for air leakage in the intake system

Check the induction system for air leaks. See. Air leakage in the intake system, checking

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-430973-S09629533272011101900000)

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-430973-S06619205212012010900000)

1. Continue Refer to «Verification»(ref-430973-S26990355012011101900000)

Note. For vehicles with demand activated fuel pumps (FP), see VIDA vehicle communication Quick test of fuel pump (FP).

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-430973-S29822707642011101900000)

Measuring the line pressure

1. Connect the pressure gauge according to «Connecting fuel pressure gauge»(ref-430973-S03634394722012010900000)
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 the location of and to replace the fuel pump (FP) relay, see «Central electronic module (CEM), replacing»(ref-430924-S13972874222011101900000) For the location of and to replace the fuel pump (FP), see «Right side fuel pump with level sensor»(ref-451850-S42179980212012020900000) See «Replacing the fuel filter»(ref-430965-S41814706002011101900000) To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-430973-S22986405232012010900000) .

Is the rest pressure to be checked?

1. YES Refer to «Checking the residual pressure»(ref-430973-S17212454992011101900000)
2. NO Refer to «Checking the fuel injection system»(ref-430973-S09178205592011101900000)

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-430965-S17789992482011101900000) For the location of and to replace the fuel pump (FP) relay, see «Central electronic module (CEM), replacing»(ref-451806-S13541756372012020900000) For the location of and to replace the fuel pump (FP), see «Right side fuel pump with level sensor»(ref-451850-S42179980212012020900000) To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-430973-S22986405232012010900000) .

1. Continue Refer to «Checking the fuel injection system»(ref-430973-S09178205592011101900000)

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 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-430973-S02687436012011101900000)
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 Upper limit

Check the induction system for air leaks. Air leakage in the intake system, checking

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.

1. For 1999 model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S39198480602012020900000) .
2. For 2000- model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S06274629062012020900000) .

Check the fuel pressure 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.

1. Continue Refer to «Checking mass air flow (MAF) sensor»(ref-430973-S28586156352011101900000)

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-430973-S06619205212012010900000)

1. Continue Refer to «Verification»(ref-430973-S26060004242011101900000)

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 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-430973-S19291071512011101900000)
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 Lower limit

Check intake system for air leakage according to Check for air leaks in the intake system .

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 «Mass air flow sensor (MAF), replacing»(ref-430973-S23704484032012010900000) .

1. Continue Refer to «Verification»(ref-430973-S11831712742011101900000)

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 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-430973-S05761259002011101900000)
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 Upper limit

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

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 B5xx4x -2001, see «Thermostat / temperature sensor, engine coolant, replacing»(ref-430971-S38695460582011101900000) For B5xx4x 2002-2004, see «Replacing the thermostat and/or engine coolant temperature sensor»(ref-430971-S11844984362011101900000) For B5xx4Tx 2005-, see «Thermostat / temperature sensor, engine coolant, replacing»(ref-430971-S36682453302011101900000) . See «Checking wiring and terminals»(ref-430909-S26456997912011101900000)

1. Continue Refer to «Verification»(ref-430973-S21671473422011101900000)

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-430973-S11083084762011101900000)

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

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-430973-S16606094352011101900000)

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-430973-S12818152952011101900000)

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 B5xx4x -2001, see «Thermostat / temperature sensor, engine coolant, replacing»(ref-430971-S38695460582011101900000) For B5xx4x 2002-2004, see «Replacing the thermostat and/or engine coolant temperature sensor»(ref-430971-S11844984362011101900000) For B5xx4Tx 2005-, see «Thermostat / temperature sensor, engine coolant, replacing»(ref-430971-S36682453302011101900000) . See «Checking wiring and terminals»(ref-430909-S26456997912011101900000)

Is the temperature within its permitted range?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking the wiring and component»(ref-430973-S00819974052011101900000)

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-430973-S31422479402011101900000)

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

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-430973-S42233721762011101900000)

Scheme 556

Scheme 557

Scheme 558

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 «Resistance values»(ref-430973-S03200089462012010600000) See «Connecting the breakout box»(ref-430911-S30587875092011101900000) For information about signals: For 5 cylinder turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For 5 cylinder turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «Signal specification (B5204T5, B5234T3, B5234T7 and B5244T3 -2004)»(ref-430973-S35805337672012010900000) For B5254T4 2004, see «Signal specification (B5254T4 2004)»(ref-430973-S01154558992012010900000) For 5 cylinder turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) . For B5xx4x -2001, see «Thermostat / temperature sensor, engine coolant, replacing»(ref-430971-S38695460582011101900000) For B5xx4x 2002-2004, see «Replacing the thermostat and/or engine coolant temperature sensor»(ref-430971-S11844984362011101900000) For B5xx4Tx 2005-, see «Thermostat / temperature sensor, engine coolant, replacing»(ref-430971-S36682453302011101900000) . See «Checking wiring and terminals»(ref-430909-S05889726072011101900000)

1. Continue Refer to «Verification»(ref-430973-S17660622282011101900000)

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-430973-S09582215812011101900000)

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

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

See Fault-tracing

1. 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-430973-S33295170022011101900000)

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-430973-S33822638362011101900000)

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).

Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

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-430972-S31879278172011101900000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA 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-430973-S17791409132011101900000)

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

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

Faulty signal. Permanent fault

See Faulty signal. Permanent fault

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).

See Signal missing. Intermittent fault

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-430973-S14076613982011101900000)

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

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

See Signal missing. Permanent fault

Checking for air leakage in the exhaust system

Check for air leakage.

1. For 1999 model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S39198480602012020900000) .
2. For 2000- model year cars, see «Checking for air leakage in the exhaust system»(ref-451852-S06274629062012020900000) .

Remedy as necessary.

Scheme 559

Was there any air leakage?

1. YES Refer to «Verification»(ref-430973-S37433441122011101900000)
2. NO Refer to «Checking components and wiring»(ref-430973-S33564515262011101900000)

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-430972-S31879278172011101900000) . Connect VIDA 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-430973-S01752777812011101900000)

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-430972-S31879278172011101900000) . Connect VIDA 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-430973-S12802551602011101900000)

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

See Signal too high

See Signal too high

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).

See Signal too low. Intermittent fault

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-430972-S31879278172011101900000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA 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-430973-S15119524622011101900000)

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

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

See Signal too low. Permanent fault

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-430973-S16829088342011101900000)

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-430973-S36291887152011101900000)

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-430973-S10622135582011101900000)

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-430973-S12040003522011101900000)

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-430973-S33262553192011101900000)

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-430973-S11567137002011101900000)

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

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

1. Continue Refer to «Information»(ref-430973-S08650357532011101900000)

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).

See Faulty signal. Intermittent fault

Replacing the heated oxygen sensor

1. Ignition off. The control module has registered a fault in the heated oxygen sensor (HO2S).
2. Try a new heated oxygen sensor (HO2S). For B5xx4T -2004, see «Heated oxygen sensors (HO2S), replacing»(ref-430985-S33960067052011101900000) For B5xx4T 2005-, see «Heated oxygen sensor (HO2S), replacing»(ref-430985-S28241031382011101900000) .

1. Continue Refer to «Information»(ref-430973-S14987848032011101900000)

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 Faulty signal. Permanent fault

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).

See Signal missing. Intermittent fault

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 To access or replace the heated oxygen sensor (HO2S): For B5xx4T -2004, see «Heated oxygen sensors (HO2S), replacing»(ref-430985-S33960067052011101900000) For B5xx4T 2005-, see «Heated oxygen sensor (HO2S), replacing»(ref-430985-S28241031382011101900000) . For information about signals: For 5 cylinder turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For 5 cylinder turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «SIGNAL SPECIFICATION (B5204T5, B5234T3, B5234T7 AND B5244T3 -2004)»(ref-430960-S25929380012012010600000) For B5254T4 2004, see «SIGNAL SPECIFICATION (B5254T4 2004)»(ref-430960-S08864610392012010600000) For 5 cylinder turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) . See «Checking wiring and terminals»(ref-430909-S26456997912011101900000) .

Is FAULT NOT DETECTED displayed?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking components and wiring»(ref-430973-S01743900042011101900000)

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-430973-S00343890382011101900000)

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

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

See Signal missing. Permanent fault

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).

See Signal too high. Intermittent fault

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-430973-S39873903532011101900000)

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

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

See Signal too high. Permanent fault

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).

See Signal too low. Intermittent fault

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-430973-S23747835122011101900000)

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

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

See Signal too low. Permanent fault

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) 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-430973-S37021791882012010900000) CAUTION: The pressure in the fuel injection system can reach approx. 800 kPa when this diagnostic trouble code is stored, use an adapted pressure gauge.
2. Run the engine to operating temperature. Allow the engine to idle.
3. Air conditioning (A/C) off. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are roughly the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

1. YES Refer to «Checking components»(ref-430973-S36332940582011101900000)
2. NO Refer to «Checking the component and wiring»(ref-430973-S21655959042011101900000)

Fuel pressure gauge

Special tools

9812270

9812273

9812282

9989725

9995011

9995479

Connecting fuel pressure gauge

1. Supplement pressure gauge «9995011»(ref-403953-S13051471402011061000000) with adapter «9989725»(ref-403953-S30652708112011061000000) and nipple «9995479»(ref-403953-S17462459562011061000000) before use.
2. Connect adapter to valve on fuel rail, with adapter in locked position (valve closed, refer to "1" in illustration).
3. Turn pressure gauge cock towards nipple «9995479»(ref-403953-S17462459562011061000000) .
4. Connect pressure gauge second connector to fuel draining unit «9812270»(ref-403953-S06137301002011061000000) , «9812273»(ref-403953-S13586864282011061000000) and «9812282»(ref-403953-S26175172122011061000000) .
5. Unlock adapter (valve open, refer to "2" in illustration).

Disconnecting fuel pressure gauge

1. Ignition off.
2. Start draining unit.
3. Turn pressure gauge cock to mid-position.
4. Lock adapter (valve closed, refer to "1" in illustration).
5. Disconnect adapter from valve.
6. Stop draining unit.
7. Reinstall equipment.

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 «Control module fuel pump (FP), replacing»(ref-430961-S00735761252011101900000)
2. See «Checking wiring and terminals»(ref-430909-S05889726072011101900000)

Scheme 560

1. Continue Refer to «Verification»(ref-430973-S37121465522011101900000)

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

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

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S09548372022011101900000)

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

Scheme 561

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. 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-430973-S09548372022011101900000)

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.

Control module, fuel pump (FP), replacing

Operation Number(s)

Scheme 562

Scheme 563

Remove

1. the luggage compartment mat/floor hatches so that the spare wheel well can be released
2. the connector from the control unit
3. the control module from Velcro fastener

Install

1. new control module
2. connector for control module
3. luggage compartment mat/floor hatches

See Faulty signal. Intermittent fault

See Faulty signal. Permanent fault

See Signal missing. Intermittent fault

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 diagnosis is running. Other information See «Checking wiring and terminals»(ref-430909-S26456997912011101900000) To access or replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-430973-S41782866542012010900000) For information about signals on 5 cylinder engines, see «Signal specification»(ref-430975-S11230688812011101900000)

Is "FAULT NOT DETECTED" displayed?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking components and wiring»(ref-430973-S00720902652011101900000)

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

1. Ignition off
2. Reinstall the components, reconnect the connectors etc.
3. Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-430972-S31879278172011101900000)
4. Do not switch off the engine after the test drive
5. Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S)
6. There must not be any faults when the diagnostic is complete.

Was a fault detected?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S08884495132011101900000)

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.

Scheme 564

Jack up the car.

Remove the LH front wheel.

Uncover the wiring.

Disconnect the connectors.

Jack up the car.

Scheme 565

Uncover the wiring.

Remove lambda probes using tool 9995543 .

See Signal too high. Intermittent fault

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

1. Ignition off
2. Reinstall the components, reconnect the connectors etc.
3. Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-430972-S31879278172011101900000)
4. Do not switch off the engine after the test drive
5. Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S)
6. There must not be any faults when the diagnostic is complete.

Was a fault detected?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S30692151392011101900000)

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

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

See Signal too low. Intermittent fault

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

1. Ignition off
2. Reinstall the components, reconnect the connectors etc.
3. Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-430972-S31879278172011101900000)
4. Do not switch off the engine after the test drive
5. Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S)
6. There must not be any faults when the diagnostic is complete.

Was a fault detected?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-430973-S34747772492011101900000)

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) 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-430973-S37021791882012010900000)
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 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-430973-S33573387722011101900000)
2. NO Refer to «Checking components and wiring»(ref-430973-S36799674102011101900000)

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-430909-S26456997912011101900000)
2. To access or replace the fuel pump (FP), see «Level sensor, fuel tank/fuel pump, replacement»(ref-430965-S03604635112011101900000)
3. To access or replace the pump control module see «Control module fuel pump (FP), replacing»(ref-430961-S00735761252011101900000) .

1. Continue Refer to «Verification»(ref-430973-S14604288302011101900000)

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-430973-S26252637742011101900000)

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) 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-430973-S37021791882012010900000)
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. 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-430973-S06269788962011101900000)
2. NO Refer to «Checking components and wiring»(ref-430973-S15277674532011101900000)

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-430909-S05889726072011101900000)
2. See «Level sensor, fuel tank/fuel pump, replacement»(ref-430965-S03604635112011101900000)
3. See «Control module fuel pump (FP), replacing»(ref-430961-S33129299252011101900000)

1. Continue Refer to «Verification»(ref-430973-S32657856262011101900000)

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

1. Connect the manometer, see «Fuel pressure gauge»(ref-430973-S37021791882012010900000)
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 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-430973-S26475845722011101900000)

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.