Engine Control Module (ECM) Diagnostic Trouble Codes - 6 of 13: Other Volvo XC90 I рестайлинг

FAULT-TRACING INFORMATION

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).

VERIFICATION

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

Scheme 234

Scheme 235

Scheme 236

1. Ignition off.
2. Reconnect connectors, reinstall components
3. Ignition on.
4. Activate air conditioning (A/C) relay. An "clicking sound" should be heard from the air conditioning (A/C) relay when it is activated.

Does the air conditioning (A/C) relay function?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S33619546622012060500000)

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

CHECKING CONNECTOR

1. Ignition off.
2. Check turbocharger (TC) control valve connector for contact resistance and oxidation according to «CONTACT RESISTANCE AND OXIDATION»(ref-494744-S39998085242012081600000) .
3. Reinstall components, reconnect connectors etc.
4. Ignition on.
5. Activate turbocharger (TC) control valve.
6. A click should be heard from the turbocharger (TC) control valve. If the function is OK the cause of the fault was loose connections in the connector. Other information To access/replace the turbocharger (TC) control valve, see «REPLACING THE TURBOCHARGER (TC) CONTROL VALVE»(ref-476768-S04423060552012060500000)

Is the function OK?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «CHECKING COMPONENT AND WIRING»(ref-476767-S33818932332012060500000)

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

1. Ignition off.
2. Reinstall connectors, components etc.
3. Ignition on.
4. Activate turbocharger (TC) control valve
5. A click should be heard from the turbocharger (TC) control valve.
6. Check that the function is OK.

Is function OK ?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S23646734602012060500000)

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. Reinstall connectors, components etc.
3. Ignition on.
4. Activate turbocharger (TC) control valve
5. A click should be heard from the turbocharger (TC) control valve.
6. Check that the function is OK.

Is function OK ?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S28584502942012060500000)

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. Reinstall connectors, components etc.
3. Ignition on.
4. Activate turbocharger (TC) control valve
5. A click should be heard from the turbocharger (TC) control valve.
6. Check that the function is OK.

Is function OK ?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S15364550752012060500000)

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

CHECKING HOSES AND THE TURBOCHARGER (TC) CONTROL VALVE

Check the hoses between the pressure servo for the boost pressure control (BPC) valve and the turbocharger (TC) control valve. Check that the hoses are not trapped, blocked or damaged.

Check the hoses between the turbocharger (TC) control valve and the charge air pipe (between the turbocharger (TC) and the charge air cooler (CAC)). Check that the hoses are not trapped, blocked or damaged.

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

5 cylinder engines

Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check the boost pressure control (BPC) valve. Check that the pressure servo and the boost pressure control (BPC) valve are functioning correctly and are not sticking

see WASTEGATE VALVE, ADJUSTING

6 cylinder engines

Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check the boost pressure control (BPC) valve. Check that the pressure servo and the boost pressure control (BPC) valve are functioning correctly and are not sticking

see PRESSURE REGULATOR, CHECKING/ADJUSTING

Other information

1. see «REPLACING THE TURBOCHARGER (TC) CONTROL VALVE»(ref-476768-S04423060552012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S34354243782012060500000)

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

Scheme 237

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the vehicle on the road. Ensure that high boost pressure is reached (high load) so that the engine control module (ECM) can run the diagnostic
4. Connect VCT2000 (or appropriate scan tool) 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-476767-S06831786112012060500000)

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

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check the boost pressure control (BPC) valve. Check that the pressure servo and the boost pressure control (BPC) valve are functioning correctly and are not sticking: WASTEGATE VALVE, ADJUSTING

Other information

1. see «REPLACING THE TURBOCHARGER (TC) CONTROL VALVE»(ref-476768-S04423060552012060500000)
2. see «QUICK CHECK, TURBOCHARGER (TC)»(ref-476750-S39410406582012060500000)
3. see «TURBOCHARGER (TC), REPLACING»(ref-476768-S05411095602012060500000)

1. Continue Refer to «VERIFICATION»(ref-476767-S34180778262012060500000)

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 vehicle on the road. Ensure that high boost pressure is reached (high load) so that the engine control module (ECM) can run the diagnostic
4. Connect VCT2000 (or appropriate scan tool) 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-476767-S08439346922012060500000)

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

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

CHECKING FOR AIR LEAKAGE

1. Ignition off.

Check the intake system for air leakage and loose charge-air pipe.

see AIR LEAKAGE IN THE INTAKE SYSTEM, CHECKING

Does the problem persist?

1. YES Refer to «CHECKING HOSES AND THE TURBOCHARGER (TC) CONTROL VALVE»(ref-476767-S10410114442012060500000)
2. NO Refer to «VERIFICATION»(ref-476767-S21170179452012060500000)

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check the boost pressure control (BPC) valve. Check that the pressure servo and the boost pressure control (BPC) valve are functioning correctly and are not sticking

see PRESSURE REGULATOR, CHECKING/ADJUSTING

Other information

1. see «REPLACING THE TURBOCHARGER (TC) CONTROL VALVE»(ref-476768-S04423060552012060500000) .
2. see «QUICK CHECK, TURBOCHARGER (TC)»(ref-476750-S39410406582012060500000)
3. see «TURBOCHARGER (TC), REPLACING»(ref-476768-S08517344452012060500000)

1. Continue Refer to «VERIFICATION»(ref-476767-S21170179452012060500000)

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 vehicle on the road. Ensure that high boost pressure is reached (high load) so that the engine control module (ECM) can run the diagnostic
4. Connect VCT2000 (or appropriate scan tool) 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-476767-S20984321582012060500000)

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

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

REPLACING A COMPONENT

1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information: see «ELECTRIC COOLING FAN»(ref-166146-S25311922602004091400000)

1. Continue Refer to «VERIFICATION»(ref-476767-S11834309492012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S40193085792012060500000)

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

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

CHECKING THE COMPONENT

1. Ignition off.
2. Check that the engine cooling fan (FC) blade rotates easily. Check that nothing is obstructing the engine cooling fan (FC) blade.
3. Remedy as necessary.
4. Ignition on.
5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) using the VCT2000 (or appropriate scan tool).

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-476767-S32253746932012060500000)

1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information: see «ELECTRIC COOLING FAN»(ref-166146-S25311922602004091400000)

1. Continue Refer to «VERIFICATION»(ref-476767-S16506177502012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S02061813752012060500000)

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 that the fan blade rotates easily. Check that nothing is obstructing the fan
3. Remedy as necessary
4. Ignition on
5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) using the VCT2000 (or appropriate scan tool).

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-476767-S25025810842012060500000)

1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information: see «ELECTRIC COOLING FAN»(ref-166146-S25311922602004091400000)

1. Continue Refer to «VERIFICATION»(ref-476767-S06248075322012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S11503945292012060500000)

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 that the engine cooling fan (FC) blade rotates easily. Check that nothing is obstructing the engine cooling fan (FC) blade.
3. Remedy as necessary.
4. Ignition on.
5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) using the VCT2000 (or appropriate scan tool).

1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476767-S02978715602012060500000)

1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information: see «ELECTRIC COOLING FAN»(ref-166146-S25311922602004091400000)

1. Continue Refer to «VERIFICATION»(ref-476767-S06915718992012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S38307676232012060500000)

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

HINT: Diagnostic trouble code (DTC) may be caused by a damaged fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the vehicle is delivered to the customer.

1. Continue Refer to «CHECKING COMPONENTS»(ref-476767-S42155711242012060500000)

CHECKING COMPONENTS

Check the level and quality of the engine oil. Check for contaminants in particular.

Check the engine oil pressure.

Remove the camshaft reset valve. Check the oil ducts for the cylinder head for the camshaft reset valve (intake) for blockages and dirt.

HINT: The fault can be caused by contaminants in the camshaft reset valve. Try cleaning the valve.

Remedy as necessary.

Try a new intake camshaft reset valve if the above remedy does not solve the fault.

HINT: The fault may also have been caused by an internal fault in the variable valve timing unit. The variable valve timing unit may be damaged if the above fault-tracing and corrective action do not remedy the fault.

Other information

1. see «CHECKING OIL PRESSURE»(ref-476770-S13935753982012060500000)
2. see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
3. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
4. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
5. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
6. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S22600955272012060500000)

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

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S38667522702012060500000)

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.

SLOW/FAULTY

see SLOW/FAULTY

1. Ignition off.
2. Check that the engine cooling fan (FC) blade rotates easily. Check that nothing is obstructing the engine cooling fan (FC) blade.
3. Remedy as necessary.
4. Ignition on.
5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) using the VCT2000 (or appropriate scan tool).

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-476767-S29345598552012060500000)

1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information see «ELECTRIC COOLING FAN»(ref-166146-S25311922602004091400000)

1. Continue Refer to «VERIFICATION»(ref-476767-S39851779882012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S41818984332012060500000)

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 that the engine cooling fan (FC) blade rotates easily. Check that nothing is obstructing the engine cooling fan (FC) blade.
3. Remedy as necessary.
4. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) using the VCT2000 (or appropriate scan tool).

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-476767-S16898580302012060500000)

1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information see «ELECTRIC COOLING FAN»(ref-166146-S25311922602004091400000)

1. Continue Refer to «VERIFICATION»(ref-476767-S14820811372012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S03207429212012060500000)

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 that the engine cooling fan (FC) blade rotates easily. Check that nothing is obstructing the engine cooling fan (FC) blade.
3. Remedy as necessary.
4. Ignition on.
5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) using the VCT2000 (or appropriate scan tool).

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-476767-S35543813442012060500000)

1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information see «ELECTRIC COOLING FAN»(ref-166146-S25311922602004091400000)

1. Continue Refer to «VERIFICATION»(ref-476767-S02916329172012060500000)

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S38387885692012060500000)

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 SLOW/FAULTY

see SLOW/FAULTY

HINT: The diagnostic trouble code (DTC) may be caused by a defective fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

1. Continue Refer to «CHECKING THE WIRING»(ref-476767-S11187534072012060500000)

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

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S34740354702012060500000)

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 OR SIGNAL MISSING

see SIGNAL TOO LOW OR SIGNAL MISSING

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

1. Continue Refer to «CHECKING THE WIRING»(ref-476767-S19011048392012060500000)

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

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S13403765822012060500000)

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

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

see SIGNAL TOO HIGH

see SIGNAL TOO LOW OR SIGNAL MISSING

see SIGNAL TOO LOW OR SIGNAL MISSING

HINT: Diagnostic trouble code (DTC) may be caused by a damaged fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. Let the engine return to idle speed to start the test again. Then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the vehicle is delivered to the customer.

1. Continue Refer to «CHECKING COMPONENTS»(ref-476767-S26094171012012060500000)

Check the level and quality of the engine oil. Check for contaminants in particular.

Check the engine oil pressure.

Remove the camshaft reset valve. Check the oil ducts for the cylinder head for the camshaft reset valve (exhaust) for blockages and dirt.

HINT: The fault can be caused by contaminants in the camshaft reset valve. Try cleaning the valve.

Remedy as necessary.

Try a new intake camshaft reset valve if the above remedy does not solve the fault.

HINT: The fault may also have been caused by an internal fault in the variable valve timing unit. The variable valve timing unit may be damaged if the above fault-tracing and corrective action do not remedy the fault.

Other information

1. see «CHECKING OIL PRESSURE»(ref-476770-S13935753982012060500000)
2. see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
3. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
4. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
5. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
6. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S25915916262012060500000)

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

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S31835106942012060500000)

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 SLOW/FAULTY

see SLOW/FAULTY

see SLOW/FAULTY

HINT: The diagnostic trouble code (DTC) may be caused by a defective fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

1. Continue Refer to «CHECKING THE WIRING»(ref-476767-S15677178042012060500000)

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

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S15946111552012060500000)

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 OR SIGNAL MISSING

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

1. Continue Refer to «CHECKING THE WIRING»(ref-476767-S06592748392012060500000)

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

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S02649429172012060500000)

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

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

see SIGNAL TOO HIGH

see SIGNAL TOO LOW OR SIGNAL MISSING

see SIGNAL TOO LOW OR SIGNAL MISSING

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

see SIGNAL TOO HIGH

see SIGNAL TOO HIGH

SIGNAL TOO LOW

see SIGNAL TOO LOW

see SIGNAL TOO LOW

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.

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.

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.

INFORMATION

The diagnostic trouble code (DTC) may for example be stored when

1. Insufficient coolant in cooling system.
2. Clogged radiator.

These should therefore be checked and rectified first.

Scheme 238

1. Continue Refer to «CHECKING THE FUNCTION»(ref-476767-S11379409582012060500000)

CHECKING THE FUNCTION

1. Ignition on. Activate the engine cooling fan (FC). Check that it starts and runs normally. Try by activating different speeds on the electric cooling fan. Remedy as necessary. Other information see «ELECTRIC COOLING FAN»(ref-166146-S25311922602004091400000)

1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-476767-S23490021062012060500000)

Scheme 239

1. Ignition off.
2. Unplug the engine temperature sensor connectors. Check the connectors. Check for loose connections. Check for contact resistance. Check for oxidation. Check the resistance of the sensor between #1 and #2 (to the sensor). Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000) For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000) For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) . see «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000) For B5xx4T, see «REPLACING THE THERMOSTAT AND/OR ENGINE COOLANT TEMPERATURE SENSOR»(ref-476760-S13127344692012060500000) For B6xx4T, see «ENGINE COOLANT TEMPERATURE (ECT) SENSOR, REPLACING»(ref-476695-S19968063362012060500000) . see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)

1. Continue Refer to «VERIFICATION»(ref-476767-S33992316392012060500000)

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-476767-S18398366472012060500000)

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. 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 TOO HIGH

see SIGNAL TOO LOW OR SIGNAL MISSING

HINT: The diagnostic trouble code (DTC) may be caused by a defective fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

1. Continue Refer to «CHECKING COMPONENTS»(ref-476767-S14025517502012060500000)

Check the engine oil level and quality. Check for contaminants in particular.

Check the engine oil pressure.

Remove the camshaft reset valve. Check the oil ducts for the cylinder head for the camshaft reset valve (intake) for blockages and dirt.

HINT: Faults may result from dirt in the camshaft reset valve. Try cleaning the valve.

Remedy as necessary.

Try a new intake camshaft reset valve if the above remedy does not solve the fault.

HINT: The fault may also have been caused by an internal fault in the variable valve timing unit. The variable valve timing unit may be defective if the above fault tracing and corrective action does not remedy the fault.

Other information

1. To check the oil pressure, see «CHECKING OIL PRESSURE»(ref-476770-S13935753982012060500000)
2. To clean the camshaft reset valve, see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
3. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
4. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
5. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
6. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S26826875382012060500000)

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

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S33584487772012060500000)

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 particularly that the boost pressure sensor is correctly installed and has not come loose.

Check the intake system for air leakage. Check in particular the hose between the turbocharger (TC) and the throttle unit.

The boost pressure sensor is damaged if no fault is found in the above fault-tracing.

Other information

1. see «INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT»(ref-476750)
2. For B5xx4T, see «TEMPERATURE AND PRESSURE SENSORS, REPLACING»(ref-476695-S35429283012012060500000)
3. For B6xx4T, see «TEMPERATURE AND PRESSURE SENSORS, REPLACING»(ref-476695-S35429283012012060500000)

1. Continue Refer to «VERIFICATION»(ref-476767-S42931696542012060500000)

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 vehicle on the road. Ensure that high boost pressure is reached (high load) so that the engine control module (ECM) can run the diagnostic
4. Connect VCT2000 (or appropriate scan tool) 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-476767-S12119683872012060500000)

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

see SIGNAL TOO HIGH / SIGNAL TOO LOW

see SIGNAL TOO HIGH / SIGNAL TOO LOW

see SIGNAL TOO HIGH

see SIGNAL TOO LOW OR SIGNAL MISSING

HINT: The diagnostic trouble code (DTC) may be caused by a defective fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

1. Continue Refer to «CHECKING COMPONENTS»(ref-476767-S30374688832012060500000)

Check the engine oil level and quality. Check for contaminants in particular.

Check the engine oil pressure.

Remove the camshaft reset valve. Check the oil ducts for the cylinder head for the camshaft reset valve (exhaust) for blockages and dirt.

HINT: Faults may result from dirt in the camshaft reset valve. Try cleaning the valve.

Remedy as necessary.

Try a new intake camshaft reset valve if the above remedy does not solve the fault.

HINT: The fault may also have been caused by an internal fault in the variable valve timing unit. The variable valve timing unit may be defective if the above fault tracing and corrective action does not remedy the fault.

Other information

1. To check the oil pressure, see «CHECKING OIL PRESSURE»(ref-476770-S13935753982012060500000)
2. To clean the camshaft reset valve, see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
3. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
4. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
5. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
6. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S19966755672012060500000)

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

1. Start the engine
2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
3. Active the quick test of camshaft control by clicking the start button
4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of ±10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S39966846462012060500000)

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

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

1. Start the engine and run it to normal operating temperature
2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. If the adaptation value is correct (between -8° and +8°) the fault is intermittent. If the adaptation value is incorrect (lower than -8° or higher than +8°), the fault is permanent.

Is the adaptation value correct?

1. YES Refer to «INTERMITTENT FAULT»(ref-476767-S32401648542012060500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-476767-S34749482072012060500000)

For variable valve timing control to operate correctly the engine oil must be at the correct level, of the correct quality and not contaminated.

Check the engine oil level and quality. Check for contaminants in particular.

If the adaptation value is too high (higher than +8°) when the engine is at operating temperature, the cause of the fault is probably one of the following

1. the timing belt is incorrectly seated
2. incorrect base setting of the timing belt
3. faulty camshaft reset valve (the slide in the valve has stuck).

HINT: First try adjusting the basic set up of the camshaft. Then read off the adaptation value for the camshaft at idle speed with the engine at operating temperature. The value must be between -8° and +8°. If the adaptation value is incorrect when the basic setting of the camshaft is correct, try cleaning the camshaft reset valve.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Try a new camshaft reset valve if the above fault-tracing does not solve the fault.

Remedy as necessary.

HINT: The fault can also be caused by a defective variable valve timing unit. The variable valve timing unit may be defective if the above fault tracing and corrective action does not remedy the fault.

Other information

1. To clean the camshaft reset valve, see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
3. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .
4. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
5. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S05845416542012060500000)

INTERMITTENT FAULT

If the diagnostic trouble code (DTC) for this fault is stored but the adaptation value is correct, the fault is intermittent. The cause of the intermittent fault is probably a defective camshaft reset valve.

HINT: Faults may result from dirt in the camshaft reset valve. Try cleaning the valve.

Other information

1. To clean the camshaft reset valve, see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
3. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
4. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
5. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S05845416542012060500000)

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

1. Start the engine and run it to normal operating temperature
2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S18441465242012060500000)

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

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

1. Start the engine and run it to normal operating temperature
2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. If the adaptation value is correct (between -8° and +8°) the fault is intermittent. If the adaptation value is incorrect (lower than -8° or higher than +8°), the fault is permanent.

1. Continue Refer to «CHECKING COMPONENTS»(ref-476767-S20545721102012060500000)

For variable valve timing control to operate correctly the engine oil must be at the correct level, of the correct quality and not contaminated.

Check the engine oil level and quality. Check for contaminants in particular.

Adjust the camshaft settings.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Other information

1. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
2. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S34068041332012060500000)

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

1. Start the engine and run it to normal operating temperature
2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S14643628362012060500000)

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

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

1. Start the engine and run it to normal operating temperature
2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. If the adaptation value is correct (between -8° and +8°) the fault is intermittent. If the adaptation value is incorrect (lower than -8° or higher than +8°), the fault is permanent.

Is the adaptation value correct?

1. YES Refer to «INTERMITTENT FAULT»(ref-476767-S30594449292012060500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-476767-S03169514982012060500000)

For variable valve timing control to operate correctly the engine oil must be at the correct level, of the correct quality and not contaminated.

Check the engine oil level and quality. Check for contaminants in particular.

If the adaptation value is too high (higher than +8°) when the engine is at operating temperature, the cause of the fault is probably one of the following

1. the timing belt is incorrectly seated
2. the basic setting of the camshaft is incorrect
3. faulty camshaft reset valve (the slide in the valve has stuck).

HINT: First try adjusting the basic set up of the camshaft. Then read off the adaptation value for the camshaft at idle speed with the engine at operating temperature. The value must be between -8° and +8°. If the adaptation value is incorrect when the basic setting of the camshaft is correct, try cleaning the camshaft reset valve.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Try a new camshaft reset valve if the above fault-tracing does not solve the fault.

Remedy as necessary.

HINT: The fault can also be caused by a defective variable valve timing unit. The variable valve timing unit may be defective if the above fault tracing and corrective action does not remedy the fault.

Other information

1. To clean the camshaft reset valve, see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
3. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .
4. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
5. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S13871318122012060500000)

If the diagnostic trouble code (DTC) for this fault is stored but the adaptation value is correct, the fault is intermittent. The cause of the intermittent fault is probably a defective camshaft reset valve.

HINT: Faults may result from dirt in the camshaft reset valve. Try cleaning the valve.

Other information

1. To clean the camshaft reset valve, see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
3. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
4. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
5. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S13871318122012060500000)

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

1. Start the engine and run it to normal operating temperature
2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S17680353452012060500000)

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

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

1. Start the engine and run it to normal operating temperature
2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. If the adaptation value is correct (between -8° and +8°) the fault is intermittent. If the adaptation value is incorrect (lower than -8° or higher than +8°), the fault is permanent.

Is the adaptation value correct?

1. YES Refer to «INTERMITTENT FAULT»(ref-476767-S40074782862012060500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-476767-S34991571882012060500000)

In order for the variable valve timing control to function correctly, the correct grade of engine oil must be used. The oil must be clean and the oil pressure must be correct.

Check the engine oil level and quality. Check for contaminants in particular.

Check the engine oil pressure.

Remedy as necessary.

If no fault is found in the above fault tracing and the adaptation value is too low (lower than -8°) when the engine is at operating temperature, the cause of the fault is probably one of the following

1. the timing belt is incorrectly seated
2. incorrect base setting of the timing belt
3. faulty camshaft reset valve (the slide in the valve has stuck).

HINT: If no fault is found in the above fault tracing, first try adjusting the basic set up of the camshaft. Then read off the adaptation value for the camshaft at idle speed with the engine at operating temperature. The value must be between -8° and +8°. If the adaptation value is incorrect when the basic setting of the camshaft is correct, try cleaning the camshaft reset valve.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Try a new camshaft reset valve if the above fault-tracing does not solve the fault.

Remedy as necessary.

HINT: The fault may also be caused by a defective variable valve timing unit. The variable valve timing unit may be defective if the above fault tracing and corrective action does not remedy the fault.

Other information

1. To clean the camshaft reset valve, see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. To check the engine oil pressure, see «CHECKING OIL PRESSURE»(ref-476770-S13935753982012060500000)
3. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
4. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
5. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
6. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S30359591832012060500000)

If the diagnostic trouble code (DTC) for this fault is stored but the adaptation value is correct, the fault is intermittent. The cause of the intermittent fault is probably a defective camshaft reset valve.

HINT: Faults may result from dirt in the camshaft reset valve. Try cleaning the valve.

Other information

1. To clean the camshaft reset valve, see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
3. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
4. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
5. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S30359591832012060500000)

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

1. Start the engine and run it to normal operating temperature
2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S28009646752012060500000)

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

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

SIGNAL MISSING

see SIGNAL MISSING

see SIGNAL MISSING

see SIGNAL TOO HIGH

see SIGNAL TOO HIGH

see SIGNAL TOO LOW

see SIGNAL TOO LOW

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine and let it run at idle speed
4. Activate the malfunction indicator lamp (MIL)
5. Check that the function is OK.

Is function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S22853600802012060500000)

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

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

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine and let it run at idle speed
4. Activate the malfunction indicator lamp (MIL)
5. Check that the function is OK.

Is function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S32106492812012060500000)

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

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

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine and let it run at idle speed
4. Activate the malfunction indicator lamp (MIL)
5. Check that the function is OK.

Is function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S04937809112012060500000)

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

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine and let it run at idle speed
4. Activate the malfunction indicator lamp (MIL)
5. Check that the function is OK.

Is function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S09557743232012060500000)

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. Start the engine and run it to normal operating temperature
2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. The fault is intermittent if the adaptation value is between -8° and +8°. The fault is permanent if the adaptation value is lower than -8° or higher than +8°.

Is the adaptation value correct?

1. YES Refer to «INTERMITTENT FAULT»(ref-476767-S14578242152012060500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-476767-S40378657832012060500000)

For the variable valve timing control to work, the engine oil must be at the correct level, of the correct grade and free of contaminants.

Check the level and quality of the engine oil. Check for contaminants in particular.

If the adaptation value is too high (higher than +8°) when the engine is at operating temperature, the cause of the fault is probably one of the following

1. Camshaft belt incorrectly seated
2. Incorrect basic setting of the timing belt
3. Faulty camshaft reset valve (the slide in the valve has stuck).

Try to adjust the basic setting of the camshaft. Then read off the adaptation value for the camshaft with the engine idling and at operating temperature. The value must be between -8° and +8°. If the adaptation value is incorrect when the basic setting of the camshaft is correct, try cleaning the camshaft reset valve.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Try a new camshaft reset valve if the above fault-tracing does not solve the fault.

Remedy as necessary.

HINT: The fault can also be caused by a damaged variable valve timing unit. The variable valve timing unit may be damaged if the above fault-tracing and corrective action do not remedy the fault.

Other information

1. see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
3. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .
4. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
5. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S12300713882012060500000)

If the diagnostic trouble code (DTC) for this fault is stored but the adaptation value is correct, the fault is intermittent. Cause of the intermittent fault is probably a damaged camshaft reset valve.

HINT: The fault can be caused by contaminants in the camshaft reset valve. Try cleaning the valve.

Other information

1. see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
3. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
4. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
5. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S12300713882012060500000)

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

1. Start the engine and run it to normal operating temperature
2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S23952838742012060500000)

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

1. Start the engine and run it to normal operating temperature
2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. The fault is intermittent if the adaptation value is between -8° and +8°. The fault is permanent if the adaptation value is lower than -8° or higher than +8°.

Is the adaptation value correct?

1. YES Refer to «INTERMITTENT FAULT»(ref-476767-S18540089652012060500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-476767-S42346693402012060500000)

For the variable valve timing control to work, the engine oil must be at the correct level, of the correct grade and free of contaminants.

Check the level and quality of the engine oil. Check for contaminants in particular.

If the adaptation value is too high (higher than +8°) when the engine is at operating temperature, the cause of the fault is probably one of the following

1. Camshaft belt incorrectly seated
2. Incorrect basic setting of the timing belt
3. Faulty camshaft reset valve (the slide in the valve has stuck).

Try to adjust the basic setting of the camshaft. Then read off the adaptation value for the camshaft with the engine idling and at operating temperature. The value must be between -8° and +8°. If the adaptation value is incorrect when the basic setting of the camshaft is correct, try cleaning the camshaft reset valve.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Try a new camshaft reset valve if the above fault-tracing does not solve the fault.

Remedy as necessary.

HINT: The fault can also be caused by a damaged variable valve timing unit. The variable valve timing unit may be damaged if the above fault-tracing and corrective action do not remedy the fault.

Other information

1. see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
3. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .
4. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
5. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S28141548862012060500000)

If the diagnostic trouble code (DTC) for this fault is stored but the adaptation value is correct, the fault is intermittent. Cause of the intermittent fault is probably a damaged camshaft reset valve.

HINT: The fault can be caused by contaminants in the camshaft reset valve. Try cleaning the valve.

Other information

1. see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
3. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
4. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
5. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S28141548862012060500000)

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

1. Start the engine and run it to normal operating temperature
2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S18759744652012060500000)

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.

HIGH

see HIGH

1. Start the engine and run it to normal operating temperature
2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. The fault is intermittent if the adaptation value is between -8° and +8°. The fault is permanent if the adaptation value is lower than -8° or higher than +8°.

1. Continue Refer to «CHECKING COMPONENTS»(ref-476767-S12456421762012060500000)

For the variable valve timing control to work, the engine oil must be at the correct level, of the correct grade and free of contaminants.

Check the level and quality of the engine oil. Check for contaminants in particular.

Adjust the camshaft settings.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Other information

1. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
2. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S01377680872012060500000)

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

1. Start the engine and run it to normal operating temperature
2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S04515590962012060500000)

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.

LOW

see LOW

1. Start the engine and run it to normal operating temperature
2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. The fault is intermittent if the adaptation value is between -8° and +8°. The fault is permanent if the adaptation value is lower than -8° or higher than +8°.

Is the adaptation value correct?

1. YES Refer to «INTERMITTENT FAULT»(ref-476767-S08530180432012060500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-476767-S18487475902012060500000)

For the variable valve timing control to work, the engine oil must be at the correct level, of the correct grade and free of contaminants.

Check the level and quality of the engine oil. Check for contaminants in particular.

If the adaptation value is too high (higher than +8°) when the engine is at operating temperature, the cause of the fault is probably one of the following

1. Camshaft belt incorrectly seated
2. Incorrect basic setting of the timing belt
3. Faulty camshaft reset valve (the slide in the valve has stuck).

HINT: Try to adjust the basic setting of the camshaft. Then read off the adaptation value for the camshaft with the engine idling and at operating temperature. The value must be between -8° and +8°. If the adaptation value is incorrect when the basic setting of the camshaft is correct, try cleaning the camshaft reset valve.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Try a new camshaft reset valve if the above fault-tracing does not solve the fault.

Remedy as necessary.

HINT: The fault can also be caused by a damaged variable valve timing unit. The variable valve timing unit may be damaged if the above fault-tracing and corrective action do not remedy the fault.

Other information

1. see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
3. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .
4. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
5. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S01724664822012060500000)

If the diagnostic trouble code (DTC) for this fault is stored but the adaptation value is correct, the fault is intermittent. Cause of the intermittent fault is probably a damaged camshaft reset valve.

HINT: The fault can be caused by contaminants in the camshaft reset valve. Try cleaning the valve.

Other information

1. see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
3. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
4. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
5. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S01724664822012060500000)

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

1. Start the engine and run it to normal operating temperature
2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S35084379662012060500000)

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

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

see FAULT-TRACING

1. Start the engine and run it to normal operating temperature
2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. The fault is intermittent if the adaptation value is between -8° and +8°. The fault is permanent if the adaptation value is lower than -8° or higher than +8°.

Is the adaptation value correct?

1. YES Refer to «INTERMITTENT FAULT»(ref-476767-S05469481702012060500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-476767-S09637117602012060500000)

For the variable valve timing control to work, the engine oil must be at the correct level, of the correct grade and free of contaminants.

Check the level and quality of the engine oil. Check for contaminants in particular.

If the adaptation value is too high (higher than +8°) when the engine is at operating temperature, the cause of the fault is probably one of the following

1. Camshaft belt incorrectly seated
2. Incorrect basic setting of the timing belt
3. Faulty camshaft reset valve (the slide in the valve has stuck).

HINT: Try to adjust the basic setting of the camshaft. Then read off the adaptation value for the camshaft with the engine idling and at operating temperature. The value must be between -8° and +8°. If the adaptation value is incorrect when the basic setting of the camshaft is correct, try cleaning the camshaft reset valve.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Try a new camshaft reset valve if the above fault-tracing does not solve the fault.

Remedy as necessary.

HINT: The fault can also be caused by a damaged variable valve timing unit. The variable valve timing unit may be damaged if the above fault-tracing and corrective action do not remedy the fault.

Other information

1. see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
3. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .
4. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
5. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S13252007022012060500000)

If the diagnostic trouble code (DTC) for this fault is stored but the adaptation value is correct, the fault is intermittent. Cause of the intermittent fault is probably a damaged camshaft reset valve.

HINT: The fault can be caused by contaminants in the camshaft reset valve. Try cleaning the valve.

Other information

1. see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
3. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
4. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
5. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S13252007022012060500000)

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

1. Start the engine and run it to normal operating temperature
2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S35702650962012060500000)

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 HIGH

1. Start the engine and run it to normal operating temperature
2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. The fault is intermittent if the adaptation value is between -8° and +8°. The fault is permanent if the adaptation value is lower than -8° or higher than +8°.

Is the adaptation value correct?

1. YES Refer to «INTERMITTENT FAULT»(ref-476767-S36093772622012060500000)
2. NO Refer to «CHECKING COMPONENTS»(ref-476767-S11979685802012060500000)

In order for the variable valve timing control to function correctly, the correct grade of engine oil must be used. The oil must be clean and the oil pressure must be correct.

Check the level and quality of the engine oil. Check for contaminants in particular.

Check the engine oil pressure.

Remedy as necessary.

If no fault is found in the above fault tracing and the adaptation value is too low (lower than -8°) when the engine is at operating temperature, the cause of the fault is probably one of the following

1. Camshaft belt incorrectly seated
2. Incorrect basic setting of the timing belt
3. Faulty camshaft reset valve (the slide in the valve has stuck).

HINT: Try adjusting the basic setting of the camshaft if no fault is found during the above fault-tracing. Then read off the adaptation value for the camshaft with the engine idling and at operating temperature. The value must be between -8° and +8°. If the adaptation value is incorrect when the basic setting of the camshaft is correct, try cleaning the camshaft reset valve.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Try a new camshaft reset valve if the above fault-tracing does not solve the fault.

Remedy as necessary.

HINT: The fault may also be caused by a defective variable valve timing unit. The variable valve timing unit may be damaged if the above fault-tracing and corrective action do not remedy the fault.

Other information

1. see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. see «CHECKING OIL PRESSURE»(ref-476770-S13935753982012060500000)
3. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
4. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
5. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
6. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S18082783572012060500000)

The fault is intermittent if the diagnostic trouble code (DTC) for this fault is stored but the adaptation value is correct. Cause of the intermittent fault is probably a damaged camshaft reset valve.

HINT: The fault can be caused by contaminants in the camshaft reset valve. Try cleaning the valve.

Other information

1. see «VVT SOLENOID, INSPECTION AND CLEANING»(ref-494827-S00478569652012081600000)
2. For B5xx4T, see «VARIABLE VALVE TIMING SOLENOID, REPLACING»(ref-476775-S00025423592012060500000)
3. For B6xx4T, see «REPLACING THE VARIABLE VALVE TIMING SOLENOID»(ref-476996-S13268864422012060500000) .
4. For B5xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476775-S31512756852012060500000)
5. For B6xx4T, see «CAMSHAFT SEAL/VARIABLE VALVE TIMING (VVT) UNIT, REPLACING»(ref-476996-S24346974782012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S18082783572012060500000)

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

1. Start the engine and run it to normal operating temperature
2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S42351045482012060500000)

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 LOW

see SIGNAL MISSING. INTERMITTENT FAULT

see SIGNAL MISSING. PERMANENT FAULT

see SIGNAL TOO HIGH. INTERMITTENT FAULT

see SIGNAL TOO HIGH. PERMANENT FAULT

see SIGNAL TOO LOW. INTERMITTENT FAULT

see SIGNAL TOO LOW. PERMANENT FAULT

CHECKING THE HOSES AND THE TURBOCHARGER (TC) CONTROL VALVE

Check that the hoses between the pressure servo for the boost pressure control (BPC) valve and the turbocharger (TC) control valve are not trapped, blocked or damaged.

Check that the hoses between the turbocharger (TC) control valve and the charge air pipe (between the turbocharger (TC) and the charge air cooler (CAC)) are not trapped, blocked or damaged.

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

Check the setting of the waste gate valve's pressure servo as well as the waste gate valve. Check the function and check for jamming according to: WASTEGATE VALVE, ADJUSTING

Other information

1. To access the turbocharger (TC) control valve, see «REPLACING THE TURBOCHARGER (TC) CONTROL VALVE»(ref-476768-S04423060552012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S19957232392012060500000)

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

Scheme 240

1. Ignition off.
2. Reinstall connectors, components etc.
3. Disconnect the VCT 2000 from the data link connector (DLC).
4. Test drive the car and check that high boost pressure is obtained.
5. Connect the VCT 2000 to the data link connector (DLC). NOTE: Do not switch off the ignition before the VCT 2000 has been connected and the boost pressure has been tested with the smart tool. Read off the boost pressure fault status When the boost pressure has been tested the display should show that the diagnostic is complete.

Is the fault status display as not found ?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S08427604712012060500000)

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 that the hoses between the pressure servo for the boost pressure control (BPC) valve and the turbocharger (TC) control valve are not trapped, blocked or damaged.

Check that the hoses between the turbocharger (TC) control valve and the charge air pipe (between the turbocharger (TC) and the charge air cooler (CAC)) are not trapped, blocked or damaged.

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

Check the setting of the waste gate valve's pressure servo as well as the waste gate valve. Check the function and check for jamming according to: PRESSURE REGULATOR, CHECKING/ADJUSTING

Other information

1. To access the turbocharger (TC) control valve, see «REPLACING THE TURBOCHARGER (TC) CONTROL VALVE»(ref-476768-S04423060552012060500000) .

1. Continue Refer to «VERIFICATION»(ref-476767-S10994666232012060500000)

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

1. Ignition off.
2. Reinstall connectors, components etc.
3. Disconnect the VCT 2000 from the data link connector (DLC).
4. Test drive the car and check that high boost pressure is obtained.
5. Connect the VCT 2000 to the data link connector (DLC). NOTE: Do not switch off the ignition before the VCT 2000 has been connected and the boost pressure has been tested with the smart tool. Read off the boost pressure fault status When the boost pressure has been tested the display should show that the diagnostic is complete.

Is the fault status display as not found ?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S21065932622012060500000)

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.

Check the intake system for air leakage and loose charge-air pipe.

see AIR LEAKAGE IN THE INTAKE SYSTEM, CHECKING

Does the problem persist?

1. YES Refer to «CHECKING TURBO SYSTEM»(ref-476767-S39523647502012060500000)
2. NO Refer to «VERIFICATION»(ref-476767-S17543088612012060500000)

CHECKING TURBO SYSTEM

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

Check the setting of the waste gate valve's pressure servo as well as the waste gate valve. Check the function and check for jamming according to: WASTEGATE VALVE, ADJUSTING

Other information

1. see «REPLACING THE TURBOCHARGER (TC) CONTROL VALVE»(ref-476768-S04423060552012060500000)
2. see «QUICK CHECK, TURBOCHARGER (TC)»(ref-476750-S39410406582012060500000)
3. see «TURBOCHARGER, REPLACING»(ref-476768-S25465685272012060500000)

1. Continue Refer to «VERIFICATION»(ref-476767-S17543088612012060500000)

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

1. Ignition off.
2. Reinstall connectors, components etc.
3. Disconnect the VCT 2000 from the data link connector (DLC).
4. Test drive the car and check that high boost pressure is obtained.
5. Connect the VCT 2000 to the data link connector (DLC). NOTE: Do not switch off the ignition before the VCT 2000 has been connected and the boost pressure has been tested with the smart tool. Read off the boost pressure fault status. When the boost pressure has been tested the display should show that the diagnostic is complete.

Is the fault status displayed as "Ready, no fault"?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S38562628242012060500000)

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.

Check the intake system for air leakage and loose charge-air pipe.

see AIR LEAKAGE IN THE INTAKE SYSTEM, CHECKING

Does the problem persist?

1. YES Refer to «CHECKING TURBO SYSTEM»(ref-476767-S14744508422012060500000)
2. NO Refer to «VERIFICATION»(ref-476767-S25102945662012060500000)

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

Check the setting of the waste gate valve's pressure servo as well as the waste gate valve. Check the function and check for jamming according to: WASTEGATE VALVE, ADJUSTING

Other information

1. see «REPLACING THE TURBOCHARGER (TC) CONTROL VALVE»(ref-476768-S04423060552012060500000)
2. see «QUICK CHECK, TURBOCHARGER (TC)»(ref-476750-S39410406582012060500000)
3. see «TURBOCHARGER (TC)»(ref-476768-S15292419142012060500000)

1. Continue Refer to «VERIFICATION»(ref-476767-S25102945662012060500000)

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

1. Ignition off.
2. Reinstall connectors, components etc.
3. Disconnect the VCT 2000 from the data link connector (DLC).
4. Test drive the car and check that high boost pressure is obtained.
5. Connect the VCT 2000 to the data link connector (DLC). NOTE: Do not switch off the ignition before the VCT 2000 has been connected and the boost pressure has been tested with the smart tool. Read off the boost pressure fault status. When the boost pressure has been tested the display should show that the diagnostic is complete.

Is the fault status displayed as "Ready, no fault"?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S12136753182012060500000)

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.

Check the intake system for air leakage and loose charge-air pipe.

see AIR LEAKAGE IN THE INTAKE SYSTEM, CHECKING

Does the problem persist?

1. YES Refer to «CHECKING TURBO SYSTEM»(ref-476767-S15364507172012060500000)
2. NO Refer to «VERIFICATION»(ref-476767-S14221746702012060500000)

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

Check the setting of the waste gate valve's pressure servo as well as the waste gate valve. Check the function and check for jamming according to: PRESSURE REGULATOR, CHECKING/ADJUSTING

Other information

1. see «REPLACING THE TURBOCHARGER (TC) CONTROL VALVE»(ref-476768-S04423060552012060500000)
2. see «QUICK CHECK, TURBOCHARGER (TC)»(ref-476750-S39410406582012060500000)
3. see «TURBOCHARGER (TC), REPLACING»(ref-476768-S08517344452012060500000)

1. Continue Refer to «VERIFICATION»(ref-476767-S14221746702012060500000)

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

1. Ignition off.
2. Reinstall connectors, components etc.
3. Disconnect the VCT 2000 from the data link connector (DLC).
4. Test drive the car and check that high boost pressure is obtained.
5. Connect the VCT 2000 to the data link connector (DLC). NOTE: Do not switch off the ignition before the VCT 2000 has been connected and the boost pressure has been tested with the smart tool. Read off the boost pressure fault status. When the boost pressure has been tested the display should show that the diagnostic is complete.

Is the fault status displayed as "Ready, no fault"?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S29697275002012060500000)

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

see SIGNAL MISSING

see SIGNAL TOO HIGH

see SIGNAL TOO HIGH

see SIGNAL TOO LOW

see SIGNAL TOO LOW

Check that the boost pressure sensor is correctly installed and has not come loose.

Check the intake system for air leakage. Check in particular the hose between the turbocharger (TC) and the throttle unit.

The boost pressure sensor is defective if no fault is found in the above fault-tracing.

Other information

1. To check the intake system for air leakage, see «INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT»(ref-476750)
2. For B5xx4T, see «TEMPERATURE AND PRESSURE SENSORS, REPLACING»(ref-476695-S35429283012012060500000)
3. For B6xx4T, see «TEMPERATURE AND PRESSURE SENSORS, REPLACING»(ref-476695-S35429283012012060500000)

1. Continue Refer to «VERIFICATION»(ref-476767-S29643077292012060500000)

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

1. Ignition off.
2. Reinstall connectors, components etc.
3. Disconnect the VCT 2000 from the data link connector (DLC).
4. Test drive the car and check that high boost pressure is obtained.
5. Connect the VCT 2000 to the data link connector (DLC). NOTE: Do not switch off the ignition before the VCT 2000 has been connected and the boost pressure has been tested with the smart tool. Read off the boost pressure fault status. When the boost pressure has been tested the display should show that the diagnostic is complete.

Is the fault status displayed as "Ready, no fault"?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S24962799252012060500000)

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

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

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

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

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine and let it run at idle speed
4. Activate the malfunction indicator lamp (MIL)
5. Check that the function is OK.

Is function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S37533387342012060500000)

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

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

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine and let it run at idle speed
4. Activate the malfunction indicator lamp (MIL)
5. Check that the function is OK.

Is function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S23608827202012060500000)

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

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

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

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

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

1. Ignition off
2. Reinstall the connectors, components etc.
3. Start the engine and let it run at idle speed
4. Activate the malfunction indicator lamp (MIL)
5. Check that the function is OK.

Is function OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «INFORMATION»(ref-476767-S15415918822012060500000)

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).