Engine Performance Diagnostic Trouble Code (DTC) Diagnostics - 4 of 7 (Coupe): Other Volvo C70 I

Checking cables and connectors

Check signal cable between engine control module (ECM) #A22 (#A22) and mass air flow (MAF) sensor #5 for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Check power supply cable between engine control module (ECM) #A58 (#A58) and mass air flow (MAF) sensor #3 for an intermittent open-circuit according to Open-circuit, intermittent faults

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the Mass Air Flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-408434-S31668912732011071200000) .
3. With the ignition on and mass air flow (MAF) sensor connector connected the voltage at mass air flow (MAF) sensor #2 should be approximately U bat , mass air flow (MAF) sensor #3 should be ground and mass air flow (MAF) sensor #5 should be approximately 1 volt.
4. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Scheme 933

Scheme 934

Scheme 935

1. Continue Refer to «Information»(ref-408508-S12632672002011071200000)

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).

Flow too high. Intermittent fault

See Flow too high. Intermittent fault

Checking cables

Check cable between engine control module (ECM) #A22 (#A22) and mass air flow (MAF) sensor #5 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

Check ground lead between #A58 (#A58) and mass air flow (MAF) sensor #3 for an open-circuit according to Open-circuit, permanent faults

Remedy as necessary

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the Mass Air Flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-408434-S31668912732011071200000) .
3. With the ignition on and mass air flow (MAF) sensor connector connected the voltage at mass air flow (MAF) sensor #2 should be approximately U bat , mass air flow (MAF) sensor #3 should be ground and mass air flow (MAF) sensor #5 should be approximately 1 volt.
4. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Verification»(ref-408508-S25757998522011071200000)

Verification

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

Scheme 936

Scheme 937

Scheme 938

1. Ignition off
2. Reinstall the connectors, components etc.
3. Ignition on
4. Check that the air flow is correct. The value must be approximately 0 kg/h with the engine switched off
5. Start the engine. Read off the air flow. The value may vary by between 12-20 kg/h at idle speed, depending on the engine load and temperature. The value may be in excess of 20 kg/h if the engine is cold
6. Increase the engine speed (RPM) and check that the air flow increases with increased engine speed.

Are the values correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S26739799422011071200000)

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.

Flow too high. Permanent fault

See Flow too high. Permanent fault

See Flow 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).

Flow too low. Intermittent fault

See Flow too low. Intermittent fault

See Flow too low. Intermittent fault

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
4. Check that the air flow is correct. The value must be approximately 0 kg/h with the engine switched off
5. Start the engine. Read off the air flow. The value may vary by between 12-20 kg/h at idle speed, depending on the engine load and temperature. The value may be in excess of 20 kg/h if the engine is cold
6. Increase the engine speed (RPM) and check that the air flow increases with increased engine speed.

Are the values correct?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S19181685632011071200000)

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.

Flow too low. Permanent fault

See Flow too low. Permanent fault

See Flow too low. Permanent fault

Checking components, intake system

Check using information about combined diagnostic trouble codes if this trouble code is a root problem or not. If the diagnostic trouble code is stored as lone diagnostic trouble code or if it is indicated as a root problem, continue with the troubleshooting below, otherwise follow troubleshooting for the diagnostic trouble code pointed out as root problem.

ECM-130A can be generated due to a damaged mass air flow sensor. An indication of this is that the engine control system has increased the fuel amount at partial load and then primarily the value for "Lambda adaptation, upper partial load". If any of the diagnostic trouble codes ECM-260A, ECM-261A, ECM-270A and/or ECM-271A with trouble type Upper limit is stored together with ECM-130A, troubleshoot according to any of these diagnostic trouble codes, otherwise continue according to the following.

Read off "Air mass, correction value" and check in which way the air adaptation has gone. A low value, less than approx. 0.85 indicates a clogged crankcase ventilation and/or dirty throttle module. A higher value, greater than approximately 1.15, indicates a (smaller) air leak somewhere in the intake system.

High value

Check the induction system for air leaks.

Check that the intake air temperature (IAT) sensor and boost pressure sensor are correctly installed. Check for air leakage around the components.

Note. Even extremely small air leaks can cause this diagnostic trouble code (DTC) to be stored.

Low value

For markets where upgraded software, released during year 2006 or later, is available, then if ECM-91A7 and/or ECM-91B7 is stored together with ECM-130A, then the throttle module shall be cleaned.

Otherwise, the solution to the diagnostic trouble code/symptom is to load the upgraded software in the vehicle.

For markets where upgraded software, released during year 2006 or later, is not available, the solution is to clean the throttle module and the crankcase ventilation.

See Identifying upgraded software ECM/ETM

Remedy as necessary.

Other information

1. See «Information about combined diagnostic trouble codes (DTCs)»(ref-438954-S03262982102011120700000)
2. See «Air leakage in the intake system, checking»(ref-408509-S38579558952011071200000)
3. See «Throttle body (TB), cleaning»(ref-408503-S04696046242011071200000)
4. See «Mass air flow (MAF) sensor, replacing»(ref-438954-S22650523202011120700000)

1. Continue Refer to «Information»(ref-408508-S25863412182011071200000)

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.

Mass air flow (MAF) sensor, replacing

S60, V70 2000-, V70 XC 2001-/XC70, S80, XC90

1. For 1999-, see «Mass air flow (MAF) sensor, replacing»(ref-438954-S33530549132011120700000) .

S60, V70 2000

1. For B5254T4, see «Mass air flow (MAF) sensor, replacing»(ref-438954-S22309020392011120700000) .

Faulty signal

See Frozen values and counter for diagnostic trouble codes.

1. DONE See «Checking components, intake system»(ref-439006-S37006947942011120700000)

Check using information about combined diagnostic trouble codes if this trouble code is a root problem or not. If the diagnostic trouble code is stored as lone diagnostic trouble code or if it is indicated as a root problem, continue with the troubleshooting below, otherwise follow troubleshooting for the diagnostic trouble code pointed out as root problem.

ECM-130A can be generated due to a damaged mass air flow sensor. An indication of this is that the engine control system has increased the fuel amount at partial load and then primarily the value for "Lambda adaptation, upper partial load". If any of the diagnostic trouble codes ECM-260A, ECM-261A, ECM-270A and/or ECM-271A with trouble type Upper limit is stored together with ECM-130A, troubleshoot according to any of these diagnostic trouble codes, otherwise continue according to the following.

Read off "Air mass, correction value" and check in which way the air adaptation has gone. A low value, less than approx. 0.85 indicates a clogged crankcase ventilation and/or dirty throttle module. A higher value, greater than approximately 1.15, indicates a (smaller) air leak somewhere in the intake system.

High value

Check the induction system for air leaks.

Check that the intake air temperature (IAT) sensor and boost pressure sensor are correctly installed. Check for air leakage around the components.

Note. Even extremely small air leaks can cause this diagnostic trouble code (DTC) to be stored.

Low value

For markets where upgraded software, released during year 2006 or later, is available, then if ECM-91A7 and/or ECM-91B7 is stored together with ECM-130A, then the throttle module shall be cleaned.

Otherwise, the solution to the diagnostic trouble code/symptom is to load the upgraded software in the vehicle.

For markets where upgraded software, released during year 2006 or later, is not available, the solution is to clean the throttle module and the crankcase ventilation.

See Identifying upgraded software ECM/ETM

Remedy as necessary.

Other information

1. See «Information about combined diagnostic trouble codes (DTCs)»(ref-438954-S03262982102011120700000)
2. See «Air leakage in the intake system, checking»(ref-438955-S00276150322011120700000)
3. See «Throttle body (TB), cleaning»(ref-408503-S04696046242011071200000)
4. See «Mass air flow (MAF) sensor, replacing»(ref-438954-S22650523202011120700000)

1. Continue See «Information»(ref-408508-S24122986242011071200000)

Information

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.

1. FAULT FOUND OKAY: Troubleshooting has been completed.

See Faulty signal

Check the boost pressure sensor connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check the signal cable between control module #A23 (#A23) and boost pressure sensor terminal 3 for an intermittent open-circuit according to Open-circuit, intermittent faults and an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults

Check the ground lead between control module #A60 (#A60) and boost pressure sensor terminal 2 for an intermittent open-circuit according to Open-circuit, intermittent faults

Other information

1. To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access / replace the boost pressure sensor, see «Manifold absolute pressure (MAP) sensor, replacing»(ref-408507-S11632055412011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Scheme 939

1. Continue Refer to «Information»(ref-408508-S16653448432011071200000)

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

See Signal too high. Intermittent fault

Checking connector

1. Ignition off
2. Check boost pressure sensor connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-408435-S11196285822011071200000) .
3. Reinstall components, reconnect connectors etc.
4. Ignition on.
5. Read off boost pressure sensor signal. Check that the signal is within its permitted range. With engine switched off voltage should be approximately 1.9 V. If signal is now OK this indicates that the fault was caused by poor contact in the connector. Other information To access/replace the boost pressure sensor, see «Manifold absolute pressure (MAP) sensor, replacing»(ref-408507-S11632055412011071200000) .

Is the signal OK?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking wiring and components»(ref-408508-S25076358712011071200000)

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

1. Ignition off.
2. Reconnect connectors, reinstall components
3. Ignition on.
4. Read off boost pressure sensor signal. With the ignition on voltage should be approximately 1.9 V.

Is the signal OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S10346005432011071200000)

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

See Signal too high. Permanent fault

Check signal cable between control module #A23 (#A23) and boost pressure sensor terminal 1 for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the boost pressure sensor, see «Manifold absolute pressure (MAP) sensor, replacing»(ref-408507-S11632055412011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S17519886472011071200000)

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

See Signal too low. Intermittent fault

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

1. Ignition off.
2. Reconnect connectors, reinstall components
3. Ignition on.
4. Read off boost pressure sensor signal. With the ignition on voltage should be approximately 1.9 V.

Is the signal OK?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S37780290342011071200000)

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

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

Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

Checking connectors

Check boost pressure sensor connector for intermittent contact resistance, oxidation according to Contact resistance and oxidation .

Other information

1. To access/replace the boost pressure sensor, see «Manifold absolute pressure (MAP) sensor, replacing»(ref-408507-S11632055412011071200000) .
2. To access/replace the engine control module (ECM), see «Engine control module (ECM), replacing»(ref-438951-S17497498832011120700000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S20650697502011071200000)

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

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

Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

1. Ignition off
2. Check boost pressure sensor connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-408435-S11196285822011071200000) .
3. Reinstall components, reconnect connectors etc.
4. Ignition on.
5. Read boost pressure and atmospheric pressure.
6. The difference in pressure should not be greater than 140 hPa (2.0 psi). If the difference is less than 140 hPa (2.0 psi) it means that the cause of the fault has been loose connections in the connector. Other information Normal atmospheric pressure is 1013 hPa (14.7 psi). To access/replace the boost pressure sensor, see «Manifold absolute pressure (MAP) sensor, replacing»(ref-408507-S11632055412011071200000) .

Is the difference between the pressures less than 140 hPa? (2.0 psi)

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Replacing boost pressure sensor»(ref-408508-S29133091842011071200000)

Replacing boost pressure sensor

If the difference between the pressures is greater than 140 hPa (2.0 psi), try replacing the boost pressure sensor according to Manifold absolute pressure (MAP) sensor, replacing .

HINT: Normal atmospheric pressure is 1013 hPa (14.7 psi). Check which of the sensors appears to display the incorrect reading.

If the fault is not in the boost pressure sensor, replace the engine control module (ECM) according to Engine control module (ECM), replacing .

Note. The atmospheric pressure sensor is built into the engine control module (ECM) and therefore cannot be replaced as a separate item.

Remedy as necessary.

Other information

1. Normal atmospheric pressure is 1013 hPa (14.7 psi).
2. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Verification»(ref-408508-S21977804732011071200000)

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
4. Read off the boost pressure sensor pressure and atmospheric pressure sensor pressure
5. The difference between the pressure sensors should not be greater than 140 hPa.

Is the difference between the pressure sensors less than 140 hPa?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S36534016222011071200000)

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

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

Faulty signal. Permanent fault

See Faulty signal. Permanent fault

See Faulty signal. Permanent fault

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

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

See Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

Checking the engine coolant temperature (ECT)

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

1. Fault-tracing must begin with the engine cold (+20 °C) so that the engine coolant temperature (ECT) sensor can be tested over as wide a temperature range as possible
2. Switch off the climate control unit
3. Start the engine. Read off the engine coolant temperature (ECT). Check that the engine coolant temperature (ECT) is within its permitted range and corresponds with the engine warming up.

Is the temperature within its permitted range?

1. YES Refer to «Checking the thermostat»(ref-408508-S04712255452011071200000)
2. NO Refer to «Replacing the engine coolant temperature (ECT) sensor»(ref-408508-S42655737842011071200000)

Checking the thermostat

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

Is the temperature 85°C or lower when the fan stops?

1. YES Refer to «Replacing the thermostat»(ref-408508-S31549872462011071200000)
2. NO FAULT TRACING FAILED: The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Replacing the thermostat

Replace the thermostat. See Check/replacing thermostat .

Scheme 940

1. Continue OKAY: Troubleshooting has been completed.

Replacing the engine coolant temperature (ECT) sensor

Replace engine coolant temperature (ECT) sensor. See Engine temperature sensor .

1. Continue Refer to «Verification»(ref-408508-S38148943682011071200000)

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

1. Fault-tracing must begin with the engine cold (+20 °C) so that the engine coolant temperature (ECT) sensor can be tested over as wide a temperature range as possible
2. Ignition off
3. Reconnect connectors, reinstall components etc.
4. Start the engine
5. Read off the engine coolant temperature. 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-408508-S38312460392011071200000)

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

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

See Faulty signal. Permanent fault

See Faulty signal. Permanent fault

Check the cable between control module #A4 (#A4) and engine coolant temperature (ECT) sensor #1 for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access the engine coolant temperature (ECT) sensor, see «Engine temperature sensor»(ref-438955-S32567614912011120700000) .
3. For resistance values, see «Component specifications»(ref-408451-S01696444632011071200000) .
4. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S01325777412011071200000)

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

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

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

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

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

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S08304088962011071200000)

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

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

See Signal too high. Permanent fault

See Signal too high. Permanent fault

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

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

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

1. Ignition off
2. Check the engine coolant temperature (ECT) sensor connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-408435-S11196285822011071200000) .
3. Reinstall components, reconnect connectors etc.
4. Ignition on.
5. Read off the engine coolant temperature (ECT) sensor. If the temperature is now within its permitted range, the fault was caused by loose connections in the connector. Other information To access the engine coolant temperature (ECT) sensor, see «Engine temperature sensor»(ref-438955-S32567614912011120700000) .

Is the temperature within its permitted range?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking wiring and components»(ref-408508-S32690167722011071200000)

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

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

Is the temperature within its permitted range?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S37547671122011071200000)

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

See Signal too low. Permanent fault

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

The engine control module (ECM) has registered that the actual temperature increase has deviated from the calculated temperature increase. This deviation is due to a defective thermostat.

Try replacing the thermostat. See Temperature sensor engine coolant, replacing .

1. Continue Refer to «Information»(ref-408508-S07402735062011071200000)

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.

Temperature sensor engine coolant, replacing

C70

1. For B5xx4T -2002, see «Thermostat / temperature sensor, engine coolant, replacing»(ref-408449-S40949528952011071200000)
2. For B5xx4T 2003-, see «Replacing the thermostat and/or engine coolant temperature sensor»(ref-438954-S35417106712011120700000) .

See Faulty signal

Check injector connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check cable between injector terminal 2 and control module

1. #A16 (#A16) (ECM 2310)
2. #A34 (#A34) (ECM 2320)
3. #A15 (#A15) (ECM 2330)
4. #A33 (#A33) (ECM 2340)
5. #A14 (#A14) (ECM 2350)

and power supply between system relay terminal 3 and injector terminal 1 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the injector, see «Injector/pulse damper, replacement»(ref-438954-S22747526282011120700000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Scheme 941

1. Continue Refer to «Information»(ref-408508-S23330157542011071200000)

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

See Signal missing. Intermittent fault

Checking the connector

1. Ignition off
2. Check the injector connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-408435-S11196285822011071200000) .
3. Reinstall the components, reconnect the connectors etc.
4. Ignition on.
5. Activate the injector. A "click" should be heard when the injector is activated. If the injector is now OK, the fault was caused by poor contact in the connector. Other information To access / replace the injector, see «Injector/pulse damper, replacement»(ref-438954-S22747526282011120700000) . For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Is the injector working?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking components and wiring»(ref-408508-S07127036952011071200000)

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

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

Is the injector working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S30673032562011071200000)

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

See Signal missing. Permanent fault

Check cable between injector terminal 2 and control module

1. #A16 (#A16) (ECM 2310)
2. #A34 (#A34) (ECM 2320)
3. #A15 (#A15) (ECM 2330)
4. #A33 (#A33) (ECM 2340)
5. #A14 (#A14) (ECM 2350)

for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the injector, see «Injector/pulse damper, replacement»(ref-438954-S22747526282011120700000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Scheme 942

1. Continue Refer to «Information»(ref-408508-S09128176712011071200000)

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

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

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

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

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

Is the injector working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S12287630432011071200000)

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

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

See Signal too high. Permanent fault

See Signal too high. Permanent fault

Check cable between injector terminal 2 and control module

1. #A16 (#A16) (ECM 2310)
2. #A34 (#A34) (ECM 2320)
3. #A15 (#A15) (ECM 2330)
4. #A33 (#A33) (ECM 2340)
5. #A14 (#A14) (ECM 2350)

for an intermittent short-circuit to ground according to Short-circuit to ground, permanent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the injector, see «Injector/pulse damper, replacement»(ref-438954-S22747526282011120700000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S26693270192011071200000)

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

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

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

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

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

Is the injector working?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S38396671812011071200000)

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

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent 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. Intermittent fault

See Signal too high. Permanent 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. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent 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. Intermittent fault

See Signal too high. Permanent 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. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent 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. Intermittent fault

See Signal too high. Permanent 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. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent 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. Intermittent fault

See Signal too high. Permanent 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. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

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

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

See Signal too high. Intermittent fault

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. Activate the fuel pump (FP) relay and check that the fuel pump (FP) starts.

Does the fuel pump (FP) start?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S11158137262011071200000)

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

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

See Signal too high. Permanent fault

See Signal too high. Permanent fault

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

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

See Signal too low. Intermittent fault

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. Activate the fuel pump (FP) relay and check that the fuel pump (FP) starts.

Does the fuel pump (FP) start?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S22580369472011071200000)

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

See Signal too low. Permanent fault

Checking fuel injection system

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

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

Check the exhaust system for leakage according to Checking for air leakage in the exhaust system .

Check fuel and residual pressure according to Checking fuel and residual pressures .

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

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

Remedy as necessary.

Was a fault detected?

1. YES Refer to «Verification»(ref-408508-S25590560362011071200000)
2. NO Refer to «Checking mass air flow (MAF) sensor»(ref-408508-S11028773842011071200000)

Checking mass air flow (MAF) sensor

Test drive the car for approximately 10 minutes

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

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

Remedy as necessary.

Other information

1. To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-408434-S31668912732011071200000) .

1. Continue Refer to «Verification»(ref-408508-S25590560362011071200000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

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

Was a fault detected?

1. YES Refer to «Information»(ref-408508-S31000961642011071200000)
2. NO VERIFIED: Troubleshooting has been completed.

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

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

Lower limit

See Lower limit

See Lower limit

Checking the fuel injection system

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

HINT: Air leakage in the intake system can occur through the evaporative emission system (EVAP) valve, the secondary air solenoid valve and power brake booster.

Remedy as necessary.

1. Continue Refer to «Checking fuel pressure and residual pressure in the workshop»(ref-408508-S17071758442011071200000)

Checking the fuel injection system (cont.)

Test drive the car for approximately 10 minutes

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

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

Remedy as necessary.

Other information

1. See «Mass air flow sensor (MAF), replacing»(ref-408434-S31668912732011071200000)

1. Continue Refer to «Verification»(ref-408508-S01864678192011071200000)

Choosing a method for taking a reading

It is possible to measure fuel pressure with the car stationary or while being driven. Residual pressure is measured with the car stationary.

For measurement while the car is being driven see Taking fuel pressure readings while driving the car .

1. Continue Refer to «Measuring line pressure»(ref-408508-S27184400852011071200000)

Scheme 943

Scheme 944

1. Connect pressure gauge according to «Connecting fuel pressure gauge»(ref-408433-S42231880802011071200000) .
2. Remove central electrical unit cover
3. Remove fuel pump (FP) relay (terminal 103 in central electrical unit)
4. Connect jumper cable across relay base terminals 1 and 3
5. Switch on ignition, fuel pump should start Read off line pressure from pressure gauge. The line pressure should be 375-395 kPa If the fuel pressure is OK, check the residual pressure. Remedy as necessary Other information For location of and to replace the pressure regulator, see «Replacing fuel pressure regulator»(ref-408433-S23853565892011071200000) . For the location of and to replace the fuel pump (FP) relay, see «Replacing relay in engine compartment central electrical unit»(ref-408433-S38188396272011071200000) . For the location of and to replace the fuel pump (FP), see «Fuel pump, replacement»(ref-408434-S03598367072011071200000) . For the location of and to replace the fuel filter, see «Fuel filter, replacement»(ref-408434-S37504734802011071200000) . To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-408433-S22546047482011071200000) .

Should the residual pressure be checked?

1. YES Refer to «Checking residual pressure»(ref-408508-S38261545392011071200000)
2. NO Refer to «Checking the fuel injection system»(ref-408508-S06450608702011071200000)

Checking residual pressure

1. Switch off the ignition
2. Reset fuel pump (FP) relay Line pressure must not fall below 200 kPa within 20 minutes of the fuel pump (FP) being shut-off. Remedy as necessary Other information For the location of and to replace the injector, see «Injector/pulse damper, replacement»(ref-408434-S26492443272011071200000) . For the location of and to replace the fuel pump (FP) relay, see «Replacing relay in engine compartment central electrical unit»(ref-408433-S38188396272011071200000) . For the location of and to replace the fuel pump (FP), see «Fuel pump, replacement»(ref-408434-S03598367072011071200000) . To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-408433-S22546047482011071200000) .

1. Continue Refer to «Checking the fuel injection system»(ref-408508-S06450608702011071200000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

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

Was a fault detected?

1. YES Refer to «Information»(ref-408508-S07845161202011071200000)
2. NO VERIFIED: Troubleshooting has been completed.

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

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

Upper limit

See Upper limit

See Upper limit

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

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

Check the exhaust system for leakage according to Checking for air leakage in the exhaust system

Check fuel and residual pressure according to Checking fuel and residual pressures

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

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

Remedy as necessary.

Was a fault detected?

1. YES Refer to «Verification»(ref-408508-S11537552792011071200000)
2. NO Refer to «Checking mass air flow (MAF) sensor»(ref-408508-S25049116952011071200000)

Test drive the car for approximately 10 minutes

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

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

Remedy as necessary.

Other information

1. To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-408434-S31668912732011071200000) .

1. Continue Refer to «Verification»(ref-408508-S11537552792011071200000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

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

Was a fault detected?

1. YES Refer to «Information»(ref-408508-S33246225502011071200000)
2. NO VERIFIED: Troubleshooting has been completed.

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

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

See Lower limit

See Lower limit

Checking for air leakage in the intake system

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

HINT: Air leakage in the intake system can occur through the evaporative emission system (EVAP) valve, the secondary air solenoid valve and power brake booster.

Remedy as necessary.

1. Continue Refer to «Checking fuel pressure and residual pressure in the workshop»(ref-408508-S25550480642011071200000)

Test drive the car for approximately 10 minutes

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

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

Remedy as necessary.

Other information

1. See «Mass air flow sensor (MAF), replacing»(ref-408434-S31668912732011071200000)

1. Continue Refer to «Verification»(ref-408508-S37136110162011071200000)

It is possible to measure fuel pressure with the car stationary or while being driven. Residual pressure is measured with the car stationary.

For measurement while the car is being driven see Taking fuel pressure readings while driving the car .

1. Continue Refer to «Measuring line pressure»(ref-408508-S27110120292011071200000)

Measuring line pressure

1. Connect pressure gauge according to «Connecting fuel pressure gauge»(ref-408433-S42231880802011071200000) .
2. Remove central electrical unit cover
3. Remove fuel pump (FP) relay (terminal 103 in central electrical unit)
4. Connect jumper cable across relay base terminals 1 and 3
5. Switch on ignition, fuel pump should start Read off line pressure from pressure gauge. The line pressure should be 375-395 kPa If the fuel pressure is OK, check the residual pressure. Remedy as necessary Other information For location of and to replace the pressure regulator, see «Replacing fuel pressure regulator»(ref-408433-S23853565892011071200000) . For the location of and to replace the fuel pump (FP) relay, see «Replacing relay in engine compartment central electrical unit»(ref-408433-S38188396272011071200000) . For the location of and to replace the fuel pump (FP), see «Fuel pump, replacement»(ref-408434-S03598367072011071200000) . For the location of and to replace the fuel filter, see «Fuel filter, replacement»(ref-408434-S37504734802011071200000) . To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-408433-S22546047482011071200000) .

Should the residual pressure be checked?

1. YES Refer to «Checking residual pressure»(ref-408508-S40670103752011071200000)
2. NO Refer to «Checking the fuel injection system»(ref-408508-S39225240592011071200000)

1. Switch off the ignition
2. Reset fuel pump (FP) relay Line pressure must not fall below 200 kPa within 20 minutes of the fuel pump (FP) being shut-off. Remedy as necessary Other information For the location of and to replace the injector, see «Injector/pulse damper, replacement»(ref-408434-S26492443272011071200000) . For the location of and to replace the fuel pump (FP) relay, see «Replacing relay in engine compartment central electrical unit»(ref-408433-S38188396272011071200000) . For the location of and to replace the fuel pump (FP), see «Fuel pump, replacement»(ref-408434-S03598367072011071200000) . To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-408433-S22546047482011071200000) .

1. Continue Refer to «Checking the fuel injection system»(ref-408508-S39225240592011071200000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

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

Was a fault detected?

1. YES Refer to «Information»(ref-408508-S41904179642011071200000)
2. NO VERIFIED: Troubleshooting has been completed.

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

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

See Upper limit

See Upper limit

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

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

Check the exhaust system for air leakage. Checking for air leakage in the exhaust system

Check the fuel pressure and residual pressure. Checking fuel pressure and residual pressure in the workshop

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

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

Remedy as necessary.

1. Continue Refer to «Checking mass air flow (MAF) sensor»(ref-408508-S39791320132011071200000)

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

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

Remedy as necessary.

Other information

1. See «Mass air flow sensor (MAF), replacing»(ref-408434-S31668912732011071200000)

1. Continue Refer to «Verification»(ref-408508-S01892858362011071200000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

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

Was a fault detected?

1. YES Refer to «Information»(ref-408508-S38780970322011071200000)
2. NO VERIFIED: Troubleshooting has been completed.

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

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

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

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

Check the exhaust system for air leakage. Checking for air leakage in the exhaust system

Check the fuel pressure and residual pressure.

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

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

Remedy as necessary.

1. Continue See «Checking mass air flow (MAF) sensor»(ref-408508-S22852296432011071200000)

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

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

Remedy as necessary.

Other information

1. See «Mass air flow (MAF) sensor, replacing»(ref-438954-S22650523202011120700000)

1. Continue See «Verification»(ref-408508-S38026861522011071200000)

1. VERIFICATION FAILED: The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt. See «Fault-tracing information»(ref-408508-S33491449842011071200000)
2. VERIFIED OKAY: Troubleshooting has been completed.

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

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

1. FAULT TRACING FAILED FAULT TRACING FAILED: The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Lower limit

See Lower limit

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

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

Start the engine and idle it for 10 minutes.

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

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

Remedy as necessary.

Other information

1. To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-408434-S31668912732011071200000) .

1. Continue Refer to «Verification»(ref-408508-S12478123912011071200000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

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

Was a fault detected?

1. YES Refer to «Information»(ref-408508-S15552532362011071200000)
2. NO VERIFIED: Troubleshooting has been completed.

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

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

See Upper limit

See Upper limit

There is no fault-tracing for this diagnostic fault code (DTC).

For further information on this diagnostic trouble code, see Diagnostic trouble code (DTC) information.

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

Check signal cable (+) between heated oxygen sensor (HO2S) #1 and control module #A41 (#A41) and signal cable (-) between heated oxygen sensor (HO2S) #5 and control module #A42 (#A42) for an intermittent short circuit to each other according to Short-circuit to ground, intermittent faults .

Check the power supply to heated oxygen sensor (HO2S) #3 and the signal cable between heated oxygen sensor (HO2S) #4 and control module #A18 (#A18) for an intermittent short-circuit to the heated oxygen sensor (HO2S) other wiring according to Short-circuit to supply voltage, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Scheme 945

1. Continue Refer to «Information»(ref-408508-S00881013702011071200000)

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

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

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

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

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

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S03467917802011071200000)

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

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

See Signal missing. Permanent fault

See Signal missing. Permanent fault

Checking for air leakage in the exhaust system

Check for air leakage. See Checking for air leakage in the exhaust system .

Remedy as necessary.

Scheme 946

Was there any air leakage?

1. YES Refer to «Verification»(ref-408508-S24668289702011071200000)
2. NO Refer to «Checking components and wiring»(ref-408508-S14282406682011071200000)

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

1. Ignition off
2. Reconnect the connectors. Reinstall the components
3. Test drive the car according to the TRIP schedule. See «Verifying repairs»(ref-408503-S09635708222011071200000) . Connect VIDA again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking components and wiring»(ref-408508-S31991569982011071200000)

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

1. Ignition off
2. Reconnect the connectors, reinstall components etc.
3. Test drive the car according to the TRIP schedule. See «Verifying repairs»(ref-408503-S09635708222011071200000) . Connect VIDA again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S37083918052011071200000)

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

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

Signal too high

See Signal too high

See Signal too high

See Signal too high

See Signal too high

See Signal too high

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

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

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

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

1. Ignition off.
2. Reconnect connectors, reinstall components.
3. Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-408503-S09635708222011071200000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The value should be higher than 1.0.

Is the value higher than 1.0?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S22156938512011071200000)

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

See Signal too low. Permanent fault

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

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

See Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

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

1. Ignition off.
2. Reconnect connectors, reinstall components.
3. Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-408503-S09635708222011071200000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S31003672452011071200000)

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

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

See Faulty signal. Permanent fault

See Faulty signal. Permanent fault

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

1. Continue Refer to «Information»(ref-408508-S04764032912011071200000)

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

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

See Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

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

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

See Faulty signal. Permanent fault

See Faulty signal. Permanent fault

Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check signal cable between heated oxygen sensor (HO2S) #4 and control module #A18 (#A18) and power supply between system relay #3 and heated oxygen sensor (HO2S) #3 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-408507-S08893976632011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S41734152052011071200000)

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

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

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

1. Ignition off.
2. Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-408435-S11196285822011071200000) .
3. Reinstall components, reconnect connectors etc.
4. Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status The text NOT READY is displayed if diagnosis is underway. Other information To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-408507-S08893976632011071200000) . For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Is FAULT NOT REGISTERED displayed?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking wiring and components»(ref-408508-S12680252442011071200000)

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

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

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S09239439012011071200000)

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

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

See Signal missing. Permanent fault

See Signal missing. Permanent fault

Check signal cable between heated oxygen sensor (HO2S) #4 and control module #A18 (#A18) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-408507-S08893976632011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S01718410282011071200000)

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

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

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

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

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

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S13390400152011071200000)

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

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

See Signal too high. Permanent fault

See Signal too high. Permanent fault

Check signal cable between heated oxygen sensor (HO2S) #4 and control module #A18 (#A18) for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-408507-S08893976632011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S27496413382011071200000)

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

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

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

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

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

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S09889940082011071200000)

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

See Signal too low. Permanent fault

Check signal cable (+) between heated oxygen sensor (HO2S) #4 and control module #A61 (#B1) and the signal cable (-) between heated oxygen sensor (HO2S) #3 and control module #A62 (#B2) for an intermittent short-circuit to ground according to Short-circuit to ground, permanent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-408507-S08893976632011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Scheme 947

1. Continue Refer to «Information»(ref-408508-S22307217422011071200000)

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

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

See Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

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

1. Ignition off.
2. Reconnect connectors, reinstall components
3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S32652146782011071200000)

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

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

See Faulty signal. Permanent fault

See Faulty signal. Permanent fault

Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check the signal cable (+) between heated oxygen sensor (HO2S) #4 and control module #A61 (#B1) and the signal cable (-) between heated oxygen sensor (HO2S) #3 and control module #A62 (#B2) for an intermittent open-circuit according to Open-circuit, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-408507-S08893976632011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S31987978502011071200000)

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

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

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

1. Ignition off.
2. Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation. «Checking wiring and terminals. Permanent fault»(ref-408435-S15034065862011071200000)
3. Reinstall components, reconnect connectors etc.
4. Start the engine and let it idle. Read off the signal for the rear heated oxygen sensor (HO2S). NOTE: It may take up to approximately 3 minutes before fuel trim has begun and the signal can be read off. Check that the signal is within its permitted range. The signal should be free of disturbances and above 0.6 V or below 0.3 V. If signal is now OK this indicates that the fault was caused by poor contact in the connector. Other information To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-408507-S08893976632011071200000) . For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Is the signal OK?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking wiring and components»(ref-408508-S14002263832011071200000)

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

1. Ignition off.
2. Reconnect connectors, reinstall components
3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S01554221842011071200000)

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

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

See Signal missing. Permanent fault

See Signal missing. Permanent fault

Check the signal cable (+) between heated oxygen sensor (HO2S) #4 and control module #A61 (#B1) and the signal cable (-) between heated oxygen sensor (HO2S) #3 and control module #A62 (#B2) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-408507-S08893976632011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S31028217382011071200000)

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

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

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

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

1. Ignition off.
2. Reconnect connectors, reinstall components
3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S29200271232011071200000)

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

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

See Signal too high. Permanent fault

See Signal too high. Permanent fault

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

1. Continue Refer to «Information»(ref-408508-S08239794582011071200000)

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

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

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

Check for air leakage. See Checking for air leakage in the exhaust system .

Remedy as necessary.

Was there any air leakage?

1. YES ECM-ver1
2. NO Refer to «Replacing the heated oxygen sensor (HO2S)»(ref-408508-S00517733912011071200000)

Replacing the heated oxygen sensor (HO2S)

Try a new heated oxygen sensor (HO2S). See Adapter wiring switch, replacing .

Other information

1. To connect the breakout box and access the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000)
2. For information about signals see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Verification»(ref-408508-S04446084102011071200000)

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

1. Ignition off.
2. Reconnect connectors, reinstall components.
3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S03892938442011071200000)

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

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

See Signal too high. Permanent fault

See Signal too high. Permanent fault

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

1. Continue Refer to «Information»(ref-408508-S24855575202011071200000)

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

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

See Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

Replacing heated oxygen sensor (HO2S)

1. Ignition off. The control module has registered a fault in the heated oxygen sensor (HO2S). Try a new heated oxygen sensor (HO2S) according to «Replacing lambda probes»(ref-408507-S08893976632011071200000) .

1. Continue Refer to «Information»(ref-408508-S35003683542011071200000)

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

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

See Faulty signal. Permanent fault

See Faulty signal. Permanent fault

Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check signal cable between heated oxygen sensor (HO2S) #2 and control module #A35 (#A35) and power supply between system relay #3 and heated oxygen sensor (HO2S) #1 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-408507-S08893976632011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S03725293132011071200000)

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

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

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

1. Ignition off
2. Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-408435-S11196285822011071200000) .
3. Reinstall components, reconnect connectors etc.
4. Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway. Other information To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-408507-S08893976632011071200000) . For information about signals, see «Signal specification»(ref-438954-S05832475042011120700000) .

Is FAULT NOT REGISTERED displayed?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking wiring and components»(ref-408508-S18212423852011071200000)

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

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

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S28288539532011071200000)

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

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

See Signal missing. Permanent fault

See Signal missing. Permanent fault

Check signal cable between heated oxygen sensor (HO2S) #2 and control module #A35 (#A35) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-408507-S08893976632011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S10507428402011071200000)

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

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

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

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

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

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S36376741402011071200000)

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

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

See Signal too high. Permanent fault

See Signal too high. Permanent fault

Check signal cable between heated oxygen sensor (HO2S) #2 and control module #A35 (#A35) for an intermittent short-circuit to supply voltage according to Short-circuit to ground, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-408507-S08893976632011071200000) .
3. For resistance values, see «Component specifications»(ref-408451-S01696444632011071200000) .
4. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S10781127742011071200000)

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

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

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

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

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

Is FAULT NOT REGISTERED displayed?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S18950134982011071200000)

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

See Signal too low. Permanent fault

Check signal cable between control module #A47 (#A47) and camshaft position (CMP) sensor connector #2 for an intermittent open-circuit according to Open-circuit, intermittent faults and an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults . Check power cable between control module #A29 (#A29) and camshaft position (CMP) sensor connector #1 for an intermittent open-circuit according to Open-circuit, intermittent faults . Check ground lead between control module #A65 (#A65) and camshaft position (CMP) sensor connector #3 for an intermittent open-circuit according to Open-circuit, intermittent faults

Remedy as necessary.

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. Location of components see «Component location, B52X4 T»(ref-408450-S30453749682011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Scheme 948

1. Continue Refer to «Information»(ref-408508-S09284212052011071200000)

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

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

See Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

1. Ignition off
2. Check camshaft position (CMP) sensor connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-408435-S11196285822011071200000) and loose connections according to «Loose connections (terminals)»(ref-408435-S33351084802011071200000) . Check particularly for any damage
3. Assemble connector.
4. Start engine Read off the camshaft position (CMP) sensor fault status When the camshaft position (CMP) sensor is tested diagnostic ready should be displayed. If the fault status displays that the fault is not found, it means that the fault was caused by loose connections.

Does the status display fault found?

1. YES Refer to «Checking cables»(ref-408508-S34784199392011071200000)
2. NO OKAY: Troubleshooting has been completed.

Check the signal cable between control module #A47 (#A47) and camshaft position (CMP) sensor connector #2 for an open-circuit according to Open-circuit, permanent faults and for a short-circuit to ground according to Short-circuit to ground, permanent faults . Check power cable between control module #A29 (#A29) and camshaft position (CMP) sensor connector #1 for an open-circuit according to Open-circuit, permanent faults . Check the ground lead between control module #A65 (#A65) and camshaft position (CMP) sensor connector #3 for an open-circuit according to Open-circuit, permanent faults .

Remedy as necessary.

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. Location of components see «Component location, B52X4 T»(ref-408450-S30453749682011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Verification»(ref-408508-S01561074922011071200000)

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

1. Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

1. YES Refer to «Information»(ref-408508-S32786679042011071200000)
2. NO VERIFIED: Troubleshooting has been completed.

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

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

See Faulty signal. Permanent fault

See Faulty signal. Permanent fault

Check signal cable between control module #A47 (#A47) and camshaft position (CMP) sensor connector #2 for an intermittent open-circuit according to Open-circuit, intermittent faults and an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults . Check the ground lead between control module #A65 (#A65) and camshaft position (CMP) sensor connector #3 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. Location of components see «Component location, B52X4 T»(ref-408450-S30453749682011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S21403302312011071200000)

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

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

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

1. Ignition off
2. Check camshaft position (CMP) sensor connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-408435-S11196285822011071200000) and loose connections according to «Loose connections (terminals)»(ref-408435-S33351084802011071200000) . Check particularly for any damage.
3. Assemble connector.
4. Start engine Read off the camshaft position (CMP) sensor fault status When the camshaft position (CMP) sensor is tested diagnostic ready should be displayed. If the fault status displays that the fault is not found, it means that the fault was caused by loose connections.

Does the status display fault found?

1. YES Refer to «Checking cables»(ref-408508-S27546916702011071200000)
2. NO OKAY: Troubleshooting has been completed.

Check signal cable between control module #A47 (#A47) and camshaft position (CMP) sensor connector #2 for an open-circuit according to Open-circuit, permanent faults and a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

HINT: Use a test screwdriver with at least a 3W bulb to determine if the cable is short-circuited to supply voltage. Check the ground lead between control module #A65 (#A65) and camshaft position (CMP) sensor connector #3 for an open-circuit according to Open-circuit, permanent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. Location of components see «Component location, B52X4 T»(ref-408450-S30453749682011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Verification»(ref-408508-S09941479102011071200000)

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

1. Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

1. YES Refer to «Information»(ref-408508-S30312769752011071200000)
2. NO VERIFIED: Troubleshooting has been completed.

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

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

See Signal too high. Permanent fault

See Signal too high. Permanent fault

Check signal cable between control module #A47 (#A47) and camshaft position (CMP) sensor connector #2 for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults . Check power cable between control module #A29 (#A29) and camshaft position (CMP) sensor connector #1 for an intermittent open-circuit according to Open-circuit, intermittent faults

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. Location of components see «Component location, B52X4 T»(ref-408450-S30453749682011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S08351957772011071200000)

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

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

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

1. Ignition off
2. Check camshaft position (CMP) sensor connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-408435-S11196285822011071200000) and loose connections according to «Loose connections (terminals)»(ref-408435-S33351084802011071200000) . Check particularly for any damage
3. Assemble connector.
4. Start engine Read off the camshaft position (CMP) sensor fault status When the camshaft position (CMP) sensor is tested diagnostic ready should be displayed. If the fault status displays that the fault is not found, it means that the fault was caused by loose connections.

Does the status display fault found?

1. YES Refer to «Checking cables»(ref-408508-S27243121272011071200000)
2. NO OKAY: Troubleshooting has been completed.

Check the signal cable between control module #A47 (#A47) and camshaft position (CMP) sensor connector #2 for a short-circuit to ground according to Short-circuit to ground, permanent faults . Check power cable between control module #A29 (#A29) and camshaft position (CMP) sensor connector #1 for an open-circuit according to Open-circuit, permanent faults .

HINT: With the ignition on and camshaft position (CMP) sensor connector disconnected the voltage between terminal #1 and ground terminal should be approximately 5 V.

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. Location of components see «Component location, B52X4 T»(ref-408450-S30453749682011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Verification»(ref-408508-S11610049532011071200000)

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

1. Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

1. YES Refer to «Information»(ref-408508-S16247538712011071200000)
2. NO VERIFIED: Troubleshooting has been completed.

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

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

See Signal too low. Permanent fault

See Signal too low. Permanent fault

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

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

See Signal missing. Intermittent fault

See Signal missing. Intermittent 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. The car will not start if there is a fault in the engine speed (RPM) sensor signal.

Does the car start?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S18768797552011071200000)

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

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

See Signal missing. Permanent fault

See Signal missing. Permanent fault

Check ignition coil connector for contact resistance and oxidation Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check signal cable between ignition coil #1 and control module

1. #A31 (#A31) (ECM 3300)
2. #A30 (#A30) (ECM 3310)
3. #A50 (#A50) (ECM 3320)
4. #A52 (#A52) (ECM 3330)
5. #A51 (#A51) (ECM 3340)

and power supply between system relay #3 and ignition coil #4 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the ignition coil, see «Replacing ignition coils»(ref-438954-S11759555062011120700000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Scheme 949

1. Continue Refer to «Information»(ref-408508-S21298739372011071200000)

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

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

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

1. Ignition off
2. Check ignition coil connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-408435-S11196285822011071200000) .
3. Reinstall components, reconnect connectors etc.
4. Start the engine and let it idle. Engine should run evenly. If the engine is OK it means that the cause of the fault has been loose connections in the connector. Other information To access/replace the ignition coil, see «Replacing ignition coils»(ref-438954-S11759555062011120700000) . For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Is the engine idling evenly?

1. YES OKAY: Troubleshooting has been completed.
2. NO Refer to «Checking wiring and components»(ref-408508-S17254693052011071200000)

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

1. Ignition off
2. Reconnect connectors, reinstall components etc.
3. Start the engine. Allow the engine to idle. The engine must fire on all cylinders.

Is the engine idling evenly?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S11284715792011071200000)

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

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

See Signal missing. Permanent fault

See Signal missing. Permanent fault

Check signal cable between ignition coil #1 and control module

1. #A31 (#A31) (ECM 3300)
2. #A30 (#A30) (ECM 3310)
3. #A50 (#A50) (ECM 3320)
4. #A52 (#A52) (ECM 3330)
5. #A51 (#A51) (ECM 3340)

for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the ignition coil, see «Replacing ignition coils»(ref-438954-S11759555062011120700000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S20623928942011071200000)

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

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

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

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

1. Ignition off
2. Reconnect connectors, reinstall components etc.
3. Start the engine. Allow the engine to idle. The engine must fire on all cylinders.

Is the engine idling evenly?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S38771592312011071200000)

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

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

See Signal too high. Permanent fault

See Signal too high. Permanent fault

Check signal cable between ignition coil #1 and control module

1. #A31 (#A31) (ECM 3300)
2. #A30 (#A30) (ECM 3310)
3. #A50 (#50) (ECM 3320)
4. #A52 (#52) (ECM 3330)
5. #A51 (#A51) (ECM 3340)

for an intermittent short-circuit to ground according to Short-circuit to ground, permanent faults .

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the ignition coil, see «Replacing ignition coils»(ref-438954-S11759555062011120700000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S22793948752011071200000)

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

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

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

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

1. Ignition off
2. Reconnect connectors, reinstall components etc.
3. Start the engine. Allow the engine to idle. The engine must fire on all cylinders.

Is the engine idling evenly?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S08082909922011071200000)

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

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent 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. Intermittent fault

See Signal too high. Permanent 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. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent 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. Intermittent fault

See Signal too high. Permanent 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. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent 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. Intermittent fault

See Signal too high. Permanent 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. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent 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. Intermittent fault

See Signal too high. Permanent 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. Intermittent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. Permanent fault

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

1. Continue Refer to «Information»(ref-408508-S03975464752011071200000)

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/signal too low. Intermittent fault

See Signal too high/signal too low. Intermittent fault

See Signal too high/signal too low. Intermittent fault

Replacing control module

1. Ignition off. The control module has registered an internal fault. Try a new control module according to «Replacing the engine control module (ECM)»(ref-408506-S21950528412011071200000) . NOTE: When replacing a control module the new software must be programmed into the control module.

1. Continue Refer to «Information»(ref-408508-S00034143122011071200000)

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.

Signal too high/signal too low. Permanent fault

See Signal too high/signal too low. Permanent fault

See Signal too high/signal too low. Permanent fault

Check signal cable between knock sensor (KS) #1 and control module #A46 (#A46) and ground lead between knock sensor (KS) #2 and control module #A64 (#B4) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Check that the knock sensor (KS) is tightened to the correct torque.

HINT: The diagnostic trouble code (DTC) may be caused by a worn engine. Start the engine and listen for discordant noise.

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-408506-S26178914172011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Scheme 950

1. Continue Refer to «Information»(ref-408508-S10987758902011071200000)

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

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

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

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

1. Ignition off.
2. Reconnect the connectors, reinstall components etc.
3. Start engine and run to normal operating temperature.
4. Rev the engine to 3500 rpm and read off the value of the knock sensor (KS) signal. .

Is the value between 2-6?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S40098926302011071200000)

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

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

See Signal too high. Permanent fault

See Signal too high. Permanent fault

Check knock sensor (KS) connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check signal cable between knock sensor (KS) #1 and control module #A46 (#A46) and ground lead between knock sensor (KS) #2 and control module #A64 (#B4) for an intermittent open-circuit according to Open-circuit, intermittent faults and an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Check that the knock sensor (KS) is tightened to the correct torque.

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-408506-S26178914172011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S13824711182011071200000)

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

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

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

Checking knock sensor (KS) signal

1. Ignition off
2. Reinstall components, reconnect connectors etc.
3. Start engine and run to normal operating temperature.
4. Rev the engine to 3500 rpm and read off the value of the knock sensor (KS) signal. The value should be between 2 and 6. If the value is now OK it means that the cause of the fault has been loose connections in connector. Other information To access/replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-408506-S26178914172011071200000) . For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Is the value between 2 and 6?

1. OK OKAY: Troubleshooting has been completed.
2. NOT OK Refer to «Replacing knock sensor (KS)»(ref-408508-S19214875102011071200000)

Replacing knock sensor (KS)

Replace knock sensor (KS) according to Knock sensor (KS), replacing .

1. Continue Refer to «Verification»(ref-408508-S30890513652011071200000)

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

1. Ignition off.
2. Reconnect the connectors, reinstall components etc.
3. Start engine and run to normal operating temperature.
4. Rev the engine to 3500 rpm and read off the value of the knock sensor (KS) signal. .

Is the value between 2-6?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S04794696122011071200000)

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

See Signal too low. Permanent fault

Check signal cable between knock sensor (KS) #3 and control module #A45 (#A45) and ground lead between knock sensor (KS) #4 and control module #A67 (#B7) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Check that the knock sensor (KS) is tightened to the correct torque.

HINT: The diagnostic trouble code (DTC) may be caused by a worn engine. Start the engine and listen for discordant noise.

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-408506-S26178914172011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S11505215072011071200000)

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

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

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

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

1. Ignition off.
2. Reconnect the connectors, reinstall components etc.
3. Start engine and run to normal operating temperature.
4. Rev the engine to 3500 rpm and read off the value of the knock sensor (KS) signal. .

Is the value between 2-6?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S37390855182011071200000)

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

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

See Signal too high. Permanent fault

See Signal too high. Permanent fault

Check knock sensor (KS) connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check signal cable between knock sensor (KS) #3 and control module #A45 (#A45) and ground lead between knock sensor (KS) #4 and control module #A67 (#B7) for an intermittent open-circuit according to Open-circuit, intermittent faults and an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Check that the knock sensor (KS) is tightened to the correct torque.

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-408435-S12899753102011071200000) .
2. To access/replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-408506-S26178914172011071200000) .
3. For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

1. Continue Refer to «Information»(ref-408508-S38504499082011071200000)

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

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

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

1. Ignition off
2. Reinstall components, reconnect connectors etc.
3. Start engine and run to normal operating temperature.
4. Rev the engine to 3500 rpm and read off the value of the knock sensor (KS) signal. The value should be between 2 and 6. If the value is now OK it means that the cause of the fault has been loose connections in connector. Other information To access/replace the knock sensor (KS), see «Knock sensor (KS), replacing»(ref-408506-S26178914172011071200000) . For information about signals, see «Signal specification»(ref-408451-S42269556162011071200000) .

Is the value between 2 and 6?

1. OK OKAY: Troubleshooting has been completed.
2. NOT OK Refer to «Replacing knock sensor (KS)»(ref-408508-S26228816002011071200000)

Replace knock sensor (KS) according to Knock sensor (KS), replacing .

1. Continue Refer to «Verification»(ref-408508-S17129986602011071200000)

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

1. Ignition off.
2. Reconnect the connectors, reinstall components etc.
3. Start engine and run to normal operating temperature.
4. Rev the engine to 3500 rpm and read off the value of the knock sensor (KS) signal. .

Is the value between 2-6?

1. YES VERIFIED: Troubleshooting has been completed.
2. NO Refer to «Information»(ref-408508-S03861936492011071200000)

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

See Signal too low. Permanent fault

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

1. Continue Refer to «Information»(ref-408508-S33438484982011071200000)

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

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

See Signal too high/signal too low. Intermittent fault

See Signal too high/signal too low. Intermittent fault

1. Ignition off. The control module has registered an internal fault. Try a new control module according to «Replacing the engine control module (ECM)»(ref-408506-S21950528412011071200000) . NOTE: When replacing a control module the new software must be programmed into the control module.

1. Continue Refer to «Information»(ref-408508-S07365051152011071200000)

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

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

See Signal too high/signal too low. Permanent fault

See Signal too high/signal too low. Permanent fault

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

1. Continue Refer to «Information»(ref-408508-S36533524782011071200000)

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

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

See Signal too high/signal too low. Intermittent fault

See Signal too high/signal too low. Intermittent fault

1. Ignition off. The control module has registered an internal fault. Try a new control module according to «Replacing the engine control module (ECM)»(ref-408506-S21950528412011071200000) . NOTE: When replacing a control module the new software must be programmed into the control module.

1. Continue Refer to «Information»(ref-408508-S37079755462011071200000)

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

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

See Signal too high/signal too low. Permanent fault

See Signal too high/signal too low. Permanent fault