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Contents

Wiring diagrams Section: Testing & Diagnostics

Engine Control Module (ECM) & Electronic Fuel Injection (Efi) Diagnostic Trouble Codes - 1 of 11: Specifications
Engine Control Module (ECM) & Electronic Fuel Injection (Efi) Diagnostic Trouble Codes - 1 of 11: Overview
Engine Control Module (ECM) & Electronic Fuel Injection (Efi) Diagnostic Trouble Codes - 1 of 11: Diagnosis
Engine Control Module (ECM) & Electronic Fuel Injection (Efi) Diagnostic Trouble Codes - 1 of 11: Other

Ignition and Control Systems - General Safety Information

Engine Control Module (ECM) - Diagnostic Trouble Code (DTC) Index - B6284T

Engine Control Module (ECM) - Diagnostic Trouble Code (DTC) Index - B6294S

Engine Electrical - Component Locations

Fault Tracing Measuring Instruments - General Information

Combined Diagnostic Trouble Codes - General Information

Engine Compartment Central Electrical Unit - Removal and Installation

All sections

Engine Control Module (ECM) Diagnostic Trouble Codes - 6 of 11: Other Volvo S80 I

Testing & Diagnostics 20 illustrations ~15885 words

Emissions impact / Catalytic converter damage / Start up

See Emissions impact / Catalytic converter damage / Start up

Checking cables and connectors

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

#A31 (#A31) (ECM 3300)
#A30 (#A30) (ECM 3310)
#A50 (#A50) (ECM 3320)
#A52 (#A52) (ECM 3330)
#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

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the ignition coil, see «Replacing ignition coils»(ref-440263-S38197735212011121400000) .
For information about signals, see «Signal specification»(ref-440214-S33124753252011121400000) .

Scheme 168

Scheme 169

Continue Refer to «Information»(ref-440283-S07847280832011121400000)

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).

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

#A31 (#A31) (ECM 3300)
#A50 (#A50) (ECM 3310)
#A52 (#A52) (ECM 3320)
#A49 (#A49) (ECM 3330)
#A30 (#A30) (ECM 3340)
#A51 (#A51) (ECM 3350)

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

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the ignition coil, see «Replacing ignition coil»(ref-440263-S27505533282011121400000) .
For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440283-S31554021972011121400000)

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

Verification

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

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

Is the engine idling evenly?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S31488463192011121400000)

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

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

Checking connector

Ignition off
Check ignition coil connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-461653-S26956869552012040200000) .
Reinstall components, reconnect connectors etc.
Start the engine and let it idle. Engine should fire on all cylinders. 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 coil»(ref-440263-S27505533282011121400000) . For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) . .

Is the engine idling evenly?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking wiring and components»(ref-440283-S30928943842011121400000)

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

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

Is the engine idling evenly?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S30805709562011121400000)

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

Checking cables

Check signal cable between ignition coil #1 and control module

#A31 (#A31) (ECM 3300)
#A30 (#A30) (ECM 3310)
#A50 (#A50) (ECM 3320)
#A52 (#A52) (ECM 3330)
#A51 (#A51) (ECM 3340)

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

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the ignition coil, see «Replacing ignition coils»(ref-440263-S38197735212011121400000) .
For information about signals, see «Signal specification»(ref-440214-S33124753252011121400000) .

Scheme 170

Continue Refer to «Information»(ref-440283-S19020033542011121400000)

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).

Check signal cable between ignition coil #1 and control module

#A31 (#A31) (ECM 3300)
#A50 (#A50) (ECM 3310)
#A52 (#A52) (ECM 3320)
#A49 (#A49) (ECM 3330)
#A30 (#A30) (ECM 3340)
#A51 (#A51) (ECM 3350)

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

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the ignition coil, see «Replacing ignition coil»(ref-440263-S27505533282011121400000) .
For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440283-S21269801992011121400000)

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

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

Signal too high. Intermittent fault

See Signal too high. Intermittent fault

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

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

Is the engine idling evenly?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S22904296652011121400000)

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

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

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

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

Is the engine idling evenly?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S35799413712011121400000)

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

Check signal cable between ignition coil #1 and control module

#A31 (#A31) (ECM 3300)
#A30 (#A30) (ECM 3310)
#A50 (#50) (ECM 3320)
#A52 (#52) (ECM 3330)
#A51 (#A51) (ECM 3340)

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

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the ignition coil, see «Replacing ignition coils»(ref-440263-S38197735212011121400000) .
For information about signals, see «Signal specification»(ref-440214-S33124753252011121400000) .

Continue Refer to «Information»(ref-440283-S27313452332011121400000)

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).

Check signal cable between ignition coil #1 and control module

#A31 (#A31) (ECM 3300)
#A50 (#A50) (ECM 3310)
#A52 (#A52) (ECM 3320)
#A49 (#A49) (ECM 3330)
#A30 (#A30) (ECM 3340)
#A51 (#A51) (ECM 3350)

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

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the ignition coil, see «Replacing ignition coil»(ref-440263-S27505533282011121400000) .
For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440283-S23744709752011121400000)

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

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

Signal too low. Intermittent fault

See Signal too low. Intermittent fault

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

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

Is the engine idling evenly?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S23840203532011121400000)

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

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

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

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

Is the engine idling evenly?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S20004307062011121400000)

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

Scheme 171

Scheme 171: Checking connectors and wiring

Scheme 172

Scheme 173

Ignition off. Check the engine speed (RPM) sensor connector. Check for contact resistance and oxidation. Check the signal cable between: The engine speed (RPM) sensor terminal #1 and Engine control module (ECM) terminal #A48 (#A48). The engine speed (RPM) sensor terminal #2 and Engine control module (ECM) terminal #A66 (#B6). Check the signal line for open circuit, short-circuit to ground and short-circuit to voltage. Check the carrier plate. Remedy as necessary. Other information See «Connecting the breakout box»(ref-440211-S03702023042011121400000) For 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) . For B5xx4T -2001, see «Replacing the engine speed (RPM) sensor»(ref-461749-S36199811742012040200000) For B5xx4T 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S03460259482011121400000) For B6xx4x -2001, see «Replacing the engine speed (RPM) sensor»(ref-440263-S12980455952011121400000) For B6xx4x 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S05291773442011121400000) . See «Checking wiring and terminals»(ref-440209-S33835172972011121400000)

Continue Refer to «Verification»(ref-440283-S12151237262011121400000)

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

Scheme 174

Ignition off
Reconnect the connectors, reinstall components etc.
Start the engine
Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S15867315462011121400000)

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

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

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

See Signal missing. Intermittent fault

See Signal missing. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

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

Ignition off
Reconnect the connectors, reinstall components etc.
Start the engine
Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S28327237522011121400000)

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

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

Signal too high/signal too low. Intermittent fault

See Signal too high/signal too low. 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.

Signal too high / signal too low. Permanent fault

See Signal too high / signal too low. Permanent fault

Faulty signal or signal missing

See Faulty signal or signal missing

Checking the status

Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". HINT: In some cases several functions of the component will be diagnosed. This affects the amount of time taken to run the diagnostic. The fault is permanent if the fault status is "Fault found". If the fault status is "No fault found" the fault is intermittent and not presently active.

Continue Refer to «Checking components and wiring»(ref-440283-S42814862282011121400000)

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

Ignition off
Reconnect the connectors, reinstall components etc.
Start the engine
Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S28185344012011121400000)

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.

Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". HINT: In some cases several functions of the component will be diagnosed. This affects the amount of time taken to run the diagnostic. The fault is permanent if the fault status is "Fault found". If the fault status is "No fault found" the fault is intermittent and not presently active.

Continue Refer to «Checking components and wiring»(ref-440283-S33977426332011121400000)

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

Ignition off
Reconnect the connectors, reinstall components etc.
Start the engine
Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S17379934712011121400000)

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.

Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". HINT: In some cases several functions of the component will be diagnosed. This affects the amount of time taken to run the diagnostic. The fault is permanent if the fault status is "Fault found". If the fault status is "No fault found" the fault is intermittent and not presently active.

Continue Refer to «Checking components and wiring»(ref-440283-S34784237372011121400000)

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

Ignition off
Reconnect the connectors, reinstall components etc.
Start the engine
Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S00249976472011121400000)

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

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

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

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

See Signal too high. Intermittent 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. Permanent fault

See Faulty signal or signal missing

Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic. The fault is permanent if the fault status is "Fault found". If the fault status is "No fault found" the fault is intermittent and not presently active.

Continue Refer to «Checking components and wiring»(ref-440283-S03629368232011121400000)

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

Ignition off
Reconnect the connectors, reinstall components etc.
Start the engine
Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S08429211692011121400000)

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.

Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic. The fault is permanent if the fault status is "Fault found". If the fault status is "No fault found" the fault is intermittent and not presently active.

Continue Refer to «Checking components and wiring»(ref-440283-S09372197482011121400000)

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

Ignition off
Reconnect the connectors, reinstall components etc.
Start the engine
Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S10423405842011121400000)

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

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

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

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

See Signal too high. Intermittent 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. Permanent fault

See Signal too high/signal too low. Intermittent fault

Signal too high/signal too low. Permanent fault

See Signal too high/signal too low. Permanent fault

See Signal too high/signal too low. Intermittent fault

See Signal too high/signal too low. Permanent fault

See Fault-tracing information

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

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

Is the engine idling evenly?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S01750477562011121400000)

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

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

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

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

Is the engine idling evenly?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S27776996232011121400000)

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

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

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

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

Is the engine idling evenly?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S29469680912011121400000)

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

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

Checking fuel injection system, ignition system and components

In the event of diagnostic trouble codes (DTCs), that affect camshaft control or camshaft reset valve, these must be fault-traced first.

The diagnostic trouble code (DTC) indicates which cylinder has misfired.

Diagnostic Trouble Code (DTC)	Misfiring cylinder
ECM-3512	1
ECM-3522	2
ECM-3532	3
ECM-3542	4
ECM-3552	5
ECM-3562	6

Check that engine oil level is correct.

Check the spark plugs, search for damage in the insulation and other damage.

Check ignition spark.

Check the function of the crankcase ventilation.

Checking fuel and residual pressure. Checking fuel and residual pressures

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

Check that the engine seals tight. Compression test

Check flywheel for damage.

Other information

information about the misfire diagnostic: For -2001, see «Misfire diagnostic»(ref-440292-S13468853862011121400000) For 2002-, see «Misfire diagnostics»(ref-440283-S35521872332012033000000) . .

Continue Refer to «Verification»(ref-440283-S06954516712011121400000)

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

Ignition off.
Reinstall connectors, components etc.
Start the engine. Check that the misfire counter counts upwards and that the engine is firing on all cylinders. Also check that the misfire diagnostic system is active. If not check the conditions: For -2001, see «Misfire diagnostic»(ref-440292-S13468853862011121400000) For 2002-, see «Misfire diagnostics»(ref-440283-S35521872332012033000000) .

Does the misfiring counter count upwards?

YES Refer to «Information»(ref-440283-S34019450562011121400000)
NO VERIFIED: Troubleshooting has been completed.

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

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

Checking the fuel injection system, ignition system and components

Note. In the event of diagnostic trouble codes (DTCs), that affect camshaft control or camshaft reset valve, these must be fault-traced first.

The diagnostic trouble code (DTC) indicates which cylinder has misfired

Diagnostic Trouble Code (DTC)	Misfiring cylinder
ECM-3513	1
ECM-3523	2
ECM-3533	3
ECM-3543	4
ECM-3553	5
ECM-3563	6

Check that the engine oil level is correct.

Check the spark plugs. Search for damage in the insulation and other damage.

Check the ignition spark.

Check the function of the crankcase ventilation.

Check the fuel pressure and residual pressure. Checking fuel and residual pressures

Check if there is any air leakage. Air leakage in the intake system, checking

Check that the engine seals tight. Compression test

Check the flywheel for damage.

Other information

for information about the misfire diagnostic: For -2001, see «Misfire diagnostic»(ref-440292-S13468853862011121400000) For 2002-, see «Misfire diagnostics»(ref-440283-S35521872332012033000000) .

Continue Refer to «Verification»(ref-440283-S31903110942011121400000)

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

Scheme 175

Ignition off.
Reinstall the connectors, components etc.
Start the engine. Check that the misfire counter is not counting upwards. Check that the engine is firing on all cylinders. Also check if the misfire diagnosis is active, if not, check the conditions: For -2001, see «Misfire diagnostic»(ref-440292-S13468853862011121400000) For 2002-, see «Misfire diagnostics»(ref-440283-S35521872332012033000000) .

Does the misfire counter count up?

YES Refer to «Information»(ref-440283-S17716666562011121400000)
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.

Emissions impact / catalytic converter damage

See Emissions impact / catalytic converter damage

In the event of diagnostic trouble codes (DTCs), that affect camshaft control or camshaft reset valve, these must be fault-traced first.

The diagnostic trouble code (DTC) indicates which cylinder has misfired

Diagnostic Trouble Code (DTC)	Misfiring cylinder
ECM-3513	1
ECM-3523	2
ECM-3533	3
ECM-3543	4
ECM-3553	5
ECM-3563	6

Check that engine oil level is correct.

Check the spark plugs, search for damage in the insulation and other damage.

Check ignition spark.

Check the function of the crankcase ventilation.

Checking fuel and residual pressure. Checking fuel and residual pressures

Check if there is any air leakage. Check for air leaks in the intake system

Check that the engine seals tight. Compression test

Check flywheel for damage.

Other information

information about the misfire diagnostic: For -2001, see «Misfire diagnostic»(ref-440292-S13468853862011121400000) For 2002-, see «Misfire diagnostics»(ref-440283-S35521872332012033000000) .

Continue Refer to «Verification»(ref-440283-S18202921962011121400000)

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

Ignition off.
Reinstall the connectors, components etc.
Start the engine. Check that the misfire counter is not counting upwards. Check that the engine is firing on all cylinders. Also check if the misfire diagnosis is active, if not, check the conditions according to: For -2001, see «Misfire diagnostic»(ref-440292-S13468853862011121400000) For 2002-, see «Misfire diagnostics»(ref-440283-S35521872332012033000000) .

Does the misfire counter count up?

YES Refer to «Information»(ref-440283-S31234335972011121400000)
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.

Faulty signal. Permanent fault

See Faulty signal. Permanent fault

Signal missing

See Signal missing

Signal too high

See Signal too high

Signal too low

See Signal too low

See Faulty signal. Permanent fault

See Emissions impact / catalytic converter damage

See Faulty signal. Permanent fault

See Signal missing

See Signal too high

See Signal too low

See Faulty signal. Permanent fault

See Emissions impact / catalytic converter damage

See Faulty signal. Permanent fault

See Signal missing

See Signal too high

See Signal too low

See Faulty signal. Permanent fault

See Emissions impact / catalytic converter damage

See Faulty signal. Permanent fault

See Signal missing

See Signal too high

See Signal too low

See Faulty signal. Permanent fault

See Emissions impact / catalytic converter damage

See Faulty signal. Permanent fault

See Emissions impact / catalytic converter damage

See Faulty signal. Permanent fault

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

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

Is the engine idling evenly?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S36767457842011121400000)

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

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

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

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

Is the engine idling evenly?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S22281959912011121400000)

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

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

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

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

Is the engine idling evenly?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S27036219852011121400000)

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

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

See Signal missing

See Signal too high

See Signal too low

See Signal missing

See Signal too high

See Signal too low

See Signal missing

See Signal too high

See Signal too low

See Signal missing

See Signal too high

See Signal too low

See Signal missing

See Signal too high

See Signal too low

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

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

See Signal missing. Intermittent fault

Checking the connector

Ignition off
Check the evaporative emission system (EVAP) valve connector. Check for contact resistance and oxidation
Reinstall the components, reconnect the connectors etc.
Ignition on
Activate the evaporative emission system (EVAP) valve. A click should be heard when the evaporative emission system (EVAP) valve is activated. If the evaporative emission system (EVAP) valve is now OK this indicates that the fault was caused by poor contact in the connector. Other information: For the location of components on 5 cylinder engines, see «Location of components»(ref-461673-S37190921092012040200000) For the location of components on 6 cylinder normally aspirated engines: For 6 cylinder normally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder normally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder normally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) . For the location of components on 6 cylinder turbocharged engines: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) . For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) . See «Contents»(ref-440209-S18666729612011121400000) .

Is the evaporative emission system (EVAP) valve working?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking components and wiring»(ref-440283-S05839704442011121400000)

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

Ignition off.
Reconnect connectors, reinstall components
Ignition on.
Activate canister purge (CP) valve. A "click" should be heard when the canister purge (CP) valve is activated.

Is the canister purge (CP) valve working?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S16069089522011121400000)

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

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

See Signal missing. Permanent fault

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

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

See Signal too high. Intermittent fault

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

Ignition off.
Reconnect connectors, reinstall components
Ignition on.
Activate canister purge (CP) valve. A "click" should be heard when the canister purge (CP) valve is activated.

Is the canister purge (CP) valve working?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S35788414602011121400000)

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

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

See Signal too high. Permanent fault

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

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

See Signal too low. Intermittent fault

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

Ignition off.
Reconnect connectors, reinstall components
Ignition on.
Activate canister purge (CP) valve. A "click" should be heard when the canister purge (CP) valve is activated.

Is the canister purge (CP) valve working?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S18980679242011121400000)

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

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

Checking the component

Slacken off the EVAP canister purge valve
Connect a vacuum pump to the EVAP canister purge valve terminal (B). Pump a vacuum. Check that there is no leakage through the EVAP canister purge valve by listening to and checking via the pump gauge that the pressure is stable
Connect the EVAP canister purge valve connector
Ignition on
Activate the evaporative emission system (EVAP) valve. When the EVAP canister purge valve is activated, the valve opens and clicks. Check on the pump gauge that the vacuum drops (the pressure evens out) when the EVAP valve opens. If the function is OK, there must be no leakage when the EVAP canister purge valve is closed (stable pressure on the pump gauge) and the vacuum must drop when the EVAP canister purge valve opens (the pressure evens out). The EVAP canister purge valve is defective if the function is faulty. If the function of the EVAP canister purge valve is OK, check: The hose and hose terminals between the EVAP canister purge valve and the intake manifold. Check for leakage and blockages The hose and hose terminals between the EVAP canister and the EVAP canister purge valve. Check for leakage and blockages. Remedy as necessary. Other information: For the location of components on 5 cylinder engines, see «Location of components»(ref-461673-S37190921092012040200000) For the location of components on 6 cylinder normally aspirated engines: For 6 cylinder normally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder normally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder normally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) . For the location of components on 6 cylinder turbocharged engines: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) . To access or replace the hoses and/or EVAP canister: AWD, see «Replacing the carbon filter container»(ref-461762-S29819404772012040200000) Not all-wheel drive (AWD), see «Replacing the carbon filter container»(ref-440269-S15895984102011121400000)

Continue Refer to «Information»(ref-440283-S39566853212011121400000)

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 low

Safety

First read Safety regulations for handling fuel .

Continue Refer to «Checking wiring and terminals»(ref-440283-S07312605282011121400000)

Checking the engine coolant temperature (ECT)

Note. The test cannot be started if the engine coolant temperature (ECT) is below 70 °C.

Start the engine
Read off the engine coolant temperature (ECT). If the engine coolant temperature (ECT) is below 70 °C, allow the engine to reach operating temperature or cancel the test.

Is the temperature above 70 °C?

YES Refer to «Starting the test of the fuel tank system»(ref-440283-S07988147512011121400000)
NO FAULTRACING FAILED

Checking for blockage between the fuel tank pressure sensor and the fuel tank

HINT: If "small leak" is detected after a completed quick test of the fuel tank system, it may in certain cases be due to a blockage between the fuel tank pressure sensor and the fuel tank.

HINT: The method below is used to determine whether the detection of "small leak" after completed quick tests is caused by a blockage between the fuel tank pressure sensor and the fuel tank. It can be carried out by running the test with the fuel tank filler cap removed. Normally a "large leak" is detected with the fuel tank filler cap removed. If a "small leak" is detected with the fuel tank filler cap removed it indicates a blockage between the fuel tank pressure sensor and fuel tank.

HINT

Note. If the EVAP canister fills with the fuel vapor the test is interrupted. The EVAP canister fills with fuel vapor faster if the evaporative emission system (EVAP) valve is operating and the fuel tank filler cap is removed. Start the quick test directly after engine start and do not let the engine run at idle speed for longer than necessary.

Remove the fuel tank filler cap
Engine idling
Start the quick test with the fuel tank filler cap removed. In particular check the fuel tank pressure (red line) when the "large leak" test is running. If a "large leak" is detected with the fuel tank filler cap removed, the most likely cause is leakage. Continue fault-tracing according to "small leak". If the test is cancelled or "small leak" is detected with the fuel tank filler cap removed and the fuel tank pressure (red line) falls more slowly than normal during the test it may be due to a blockage in the hose or hose terminal between the tank and the fuel tank pressure sensor. This can be fault-traced by removing the hoses to the evaporative emission (EVAP) system components one at a time and carrying out a quick test between each operation. If a "large leak" is detected after the quick test when the hose has been disconnected the fault is in the direction of the airflow (calculated from the hose that has been disconnected). HINT: The direction of airflow during a quick test can be calculated from the fuel tank: fuel tank, evaporative emission system (EVAP) canister, evaporative emission system (EVAP) valve. The fuel tank pressure sensor measures the pressure in the hose between the fuel tank and the evaporative emission system (EVAP) canister. HINT: If the hose for the EVAP canister is detached from the fuel tank and a "large leak" is detected, there is a blockage in the tank hose terminal. Remedy as necessary. Reset all the components. Carry out a quick test of the tank system before the car is delivered to the customer. Select a suitable alternative to continue: Continue "small leak" fault-tracing Refer to «Small leak»(ref-440283-S40540602862011121400000) Finish. OKAY: Troubleshooting has been completed.

Scheme 176

Start the engine and let it run at idle speed.
Disconnect the hose between the canister purge (CP) valve and the EVAP canister from the canister purge (CP) valve.
Read off the canister purge (CP) valve. This is to check whether the valve is activated. Check that there is a vacuum in the canister purge (CP) valve when the valve is activated.

Is there a vacuum?

YES Refer to «Checking the vacuum at the EVAP canister»(ref-440283-S10960879872011121400000)
NO Refer to «Checking the canister purge (CP) valve vacuum»(ref-440283-S09757498262011121400000)

Scheme 177

Ignition off.
Reconnect the hose on the canister purge (CP) valve.
Disconnect the hose to the canister purge (CP) valve from the EVAP canister.
Start the engine and let it run at idle speed.
Read off the canister purge (CP) valve value. This is to determine whether the valve is activated or not. Check that there is a vacuum in the hose when the canister purge (CP) valve is activated.

Is there a vacuum?

YES Refer to «Checking the EVAP canister»(ref-440283-S34254773592011121400000)
NO Refer to «Checking the hose»(ref-440283-S12630680112011121400000)

Scheme 178

Connect the hose between the canister purge (CP) valve and the EVAP canister to the canister purge (CP) valve.
Start the engine and let it run at idle speed.
Disconnect the hose between the canister purge (CP) valve and the intake manifold from the canister purge (CP) valve. Check that there is a vacuum in the hose. Remedy as necessary.

Was a fault detected?

YES Refer to «Verification information»(ref-440283-S26442947022011121400000)
NO Refer to «Replacing the component»(ref-440283-S21095638212011121400000)

Replacing the component

Try a new canister purge (CP) valve according to Replacing the canister purge (CP) valve .

Continue Refer to «Verification information»(ref-440283-S26442947022011121400000)

Checking the EVAP canister

Check that all EVAP canister inlets and outlets are not sealed.

HINT: Connect a vacuum pump to the EVAP canister terminals, one at a time. Check that it is not possible to pump negative pressure.

Other information

To access / replace the EVAP canister, see «Replacing the carbon filter container»(ref-440269-S15895984102011121400000) .

Was a fault detected?

YES Refer to «Verification information»(ref-440283-S26442947022011121400000)
NO Refer to «Checking the hose between the fuel tank and the EVAP canister»(ref-440283-S02242721052011121400000)

Checking the hose

Check if the hose between the canister purge (CP) valve and the EVAP canister is blocked or trapped.

Continue Refer to «Verification information»(ref-440283-S26442947022011121400000)

Checking the hose between the fuel tank and the EVAP canister

Check that the hose between the fuel tank and EVAP canister is airtight and is not trapped.

Remedy as necessary.

Was a fault detected?

YES Refer to «Verification information»(ref-440283-S26442947022011121400000)
NO Refer to «Test pressurization of the fuel tank system»(ref-440283-S07941443302011121400000)

Scheme 179

Scheme 179: Test pressurization of the fuel tank system

Scheme 180

Scheme 181

Max 50 liters of fuel in the fuel tank.
Ignition off.
Connect the hose from the fuel tank to the EVAP canister.
Clamp the hose between the EVAP canister shut-off valve and the EVAP canister with a hose clip to seal it.
Carefully disconnect the EVAP canister hose from the canister purge (CP) valve. Connect manometer «9995646»(ref-403953-S17881977312011061000000) to the hose and the pressure regulator «9995544»(ref-403953-S05241159092011061000000) to the manometer. Set the pressure to 7 kPa (read off on manometer «9995646»(ref-403953-S17881977312011061000000) ). The cock must be at right angles to the hoses. WARNING: Max 10 kPa. Let the pressure build up for 5 minutes. Close the cock (the pressure may now drop by 1-2 kPa before it stabilizes). Read off the pressure. Turn the cock towards the EVAP canister hose. Wait for 10 minutes. WARNING: Never leave the car unattended with its fuel tank system pressurized. The pressure must be stable (it may rise a little due to fuel evaporation).

Is the pressure stable?

YES Refer to «Checking the fuel tank pressure sensor»(ref-440283-S07984999622011121400000)
NO Refer to «Checking the fuel tank system»(ref-440283-S20594709572011121400000)

Checking the fuel tank pressure sensor

Disconnect tool «9995646»(ref-403953-S17881977312011061000000) .
Connect the EVAP canister hose.
Remove the hose clamp from the hose between the canister purge (CP) valve and the intake manifold.
Start the engine and let it run at idle speed.
Read off the value for the fuel tank pressure and the canister purge (CP) valve. When the canister purge (CP) valve opens, the pressure in the fuel tank must drop.

Has the pressure in the fuel tank dropped?

YES Refer to «Checking the hose to the EVAP canister shut-off valve»(ref-440283-S40488304272011121400000)
NO Refer to «Checking the fuel tank pressure sensor hose»(ref-440283-S25941891272011121400000)

Checking the hose to the EVAP canister shut-off valve

Check the hose to the EVAP canister shut-off valve. Check the seal. Check the terminals.

Remedy as necessary.

Was a fault detected?

YES Refer to «Verification information»(ref-440283-S26442947022011121400000)
NO Refer to «Replacing the component»(ref-440283-S22057732112011121400000)

Checking the fuel tank pressure sensor hose

Ignition off.
Remove the fuel tank pressure sensor.
Remove the hose with the Y-nipple. Check that the nipple and hoses are not blocked. Remedy as necessary. Other information: To access / replace the fuel tank pressure sensor see «Replacing fuel tank pressure sensor»(ref-461756-S34461189332012040200000) .

Was a fault detected?

YES Refer to «Verification information»(ref-440283-S26442947022011121400000)
NO Refer to «Replacing the component»(ref-440283-S39053671102011121400000)

Try a new fuel tank pressure sensor according to Replacing fuel tank pressure sensor .

Scheme 182

Scheme 182: Replacing the component

Continue Refer to «Verification information»(ref-440283-S26442947022011121400000)

Try a new EVAP canister shut-off valve according to Replacing the shut-off valve for the carbon filter container .

Scheme 183

Scheme 183: Replacing the component

Continue Refer to «Verification information»(ref-440283-S26442947022011121400000)

Checking the fuel tank system

Ignition off.
Carefully pressurize the fuel tank system to 7 kPa. The cock must be at right angles to the hoses. NOTE: Max 10 kPa. Check the fuel tank system by spraying soapy water from the EVAP canister to the canister purge (CP) valve. Also spray the line between the fuel tank and the EVAP canister shut-off valve. Also check the filler pipe and the fuel tank filler cap. It may be necessary to lower the fuel tank in order to fault-trace hoses and connectors on top of the fuel tank. Remedy the leakage.

Continue Refer to «Verification information»(ref-440283-S26442947022011121400000)

Check the hose to the EVAP canister shut-off valve. Check the seal. Check the terminals.

Remedy as necessary.

Is the hose OK?

YES Refer to «Replacing the component»(ref-440283-S17120532142011121400000)
NO Refer to «Verification information»(ref-440283-S26442947022011121400000)

Try a new EVAP canister shut-off valve according to Replacing the EVAP canister shut-off valve .

Continue Refer to «Verification information»(ref-440283-S26442947022011121400000)

Ignition off.
Carefully pressurize the fuel tank system to 7 kPa. Turn the EVAP canister shut-off valve so that it is at a right angle to the hoses. WARNING: Max 10 kPa Check the fuel tank system by spraying it with soapy water from the EVAP canister to the canister purge (CP) valve. Also spray the line with the pressure regulator and roll-over valve to the fuel tank. Also check the filler pipe and the fuel tank filler cap. It may be necessary to lower the fuel tank in order to fault-trace hoses and connectors on top of the fuel tank. WARNING: Never leave the car unattended with its system pressurized.

Continue Refer to «Verification information»(ref-440283-S26442947022011121400000)

Verification information

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

Continue Refer to «Starting the test of the fuel tank system»(ref-440283-S07988147512011121400000)

Checking the vacuum downstream of the canister purge (CP) valve

Disconnect the hose between the canister purge (CP) valve and the EVAP canister from the canister purge (CP) valve.
Start the engine and let it run at idle speed Read off the canister purge (CP) valve pulse signal. There should not be a vacuum in the canister purge (CP) valve when the pulse signal is 0%. Other information To access / replace the canister purge (CP) valve, see «Replacing the canister purge (CP) valve»(ref-461762-S33100414982012040200000) .

Is the canister purge (CP) valve OK?

YES Refer to «Checking the canister purge (CP) valve»(ref-440283-S06708824572011121400000)
NO Refer to «Verification information»(ref-440283-S26442947022011121400000)

Checking the canister purge (CP) valve

Check the canister purge (CP) valve connector for dirt, damage and deposits.

Activate the canister purge (CP) valve to ensure that no function faults occur.

Check that the canister purge (CP) valve does not jam or stop functioning after it has been activated.

Continue Refer to «Verification information»(ref-440283-S26442947022011121400000)

Open the fuel tank filler cap.
Start the engine and let it run at idle speed. Read off the fuel tank pressure. HINT: The fuel tank pressure must be higher than -10 hPa. The normal value is close to 0 hPa.

Is the fuel tank pressure OK?

YES Refer to «Checking the canister purge (CP) valve»(ref-440283-S27355928622011121400000)
NO Refer to «Verification information»(ref-440283-S26442947022011121400000)

Disconnect the hose between the canister purge (CP) valve and the EVAP canister from the canister purge (CP) valve.
Start the engine and let it run at idle speed. Read off the canister purge (CP) valve pulse signal. There should not be a vacuum in the canister purge (CP) valve when the pulse signal is 0%. Other information To access / replace the canister purge (CP) valve, see «Replacing the canister purge (CP) valve»(ref-461762-S33100414982012040200000) .

Is the value correct?

YES Refer to «Checking hoses»(ref-440283-S40379692862011121400000)
NO Refer to «Verification information»(ref-440283-S26442947022011121400000)

Checking hoses

Check that the EVAP canister shut-off valve is not sealed.

Check that the EVAP canister shut-off valve filter is not sealed.

Check the hoses between the EVAP canister and the EVAP canister shut-off valve and between the EVAP canister shut-off valve and its filter for blockages and crimping.

Check the EVAP canister shut-off valve terminal in the EVAP canister for blockage.

Remedy as necessary.

To access / replace the EVAP canister shut-off valve see «Replacing the shut-off valve for the carbon filter container»(ref-440269-S03830602672011121400000) .

Continue Refer to «Verification information»(ref-440283-S26442947022011121400000)

Checking software

HINT: For vehicles of model year 2003-2005, the software in engine control module (ECM) should be checked before fault tracing of the fault relating to the leak from the tank system is carried out.

Scheme 184

Scheme 184: Checking software

Ignition on. Click on the VCT2000 symbol to start the read out and check the software version in the Engine control module (ECM). NOTE: More instructions follow together with the read out.

Has the latest software been downloaded to the control module?

YES Refer to «Perform quick-test tank system»(ref-440283-S25688183622011121400000)
NO ANOTHER TEST

Scheme 185

Activate the test by pressing on the symbol for VCT2000.
Read off initial parameters and check them according to start conditions for performing the test.
Press the button "Start" to start the quick-test.
Check that the test has started. Parameters run status shall go to "In progress" and the test phase shall go to "Reference". NOTE: If the test does not start, check that the start conditions are fulfilled. When the reference phase is finished, check of the tank system starts. The pressure in the tank starts to increase, see graph. Within 15 minutes the Engine control module (ECM) makes a decision as to whether there is leakage in the tank system or not. The test is finished.
Check parameters for test result and follow relevant instructions below. NOTE: Estimated leakage shall be used to get an idea of the proximity to the diagnostic trouble code limit. If the estimated leakage is very near the diagnostic trouble code limit, troubleshooting should probably be performed despite the Tank system, test result shows "No leakage found", especially if diagnostic trouble code for leakage has been stored earlier. NOTE: Use diagnostic trouble code counter to see the frequency of the problem. Also use frozen values to get an idea if external conditions may have affected the result. Compare with current conditions in the workshop. Conditions for starting the quick test of the fuel tank system No DTCs related to EVAP purge valve or ambient air pressure sensor set. Battery voltage 11-15 V. Atmospheric pressure higher than 750 hPa, appr. 2500 m (8200 ft). Fuel level 0-85 %. Ambient air temperature 4-35 °C (39-95 °F). NOTE: The battery voltage must be correct throughout the entire test. The test can take up to 15 minutes, depending on the quantity of fuel in the fuel tank. It is highly recommended to use the constant voltage charger, Midtronics PSC-550, during the test. For more information, see 30-04 (USA/CDN). Other information See «Description of parameters, quick test of the fuel tank system»(ref-461754-S32521549422012040200000) See «Test phases, quick test fuel tank system»(ref-461751-S41817971422012040200000) For information on leakage diagnosis, see Design and Function. See «Fuel tank system, check»(ref-440278-S07002158742011121400000) See «Test pressurizing the tank system»(ref-440278-S22082404872011121400000) Select alternative according to relevant test results: DMTL, test result = "Problem found" Refer to «DMTL, test result = "Problem found"»(ref-440283-S26287168012011121400000) Tank system, test result = "No leakage found" Refer to «Tank system, test result = "No leakage found"»(ref-440283-S40177133522011121400000) Tank system, test result = "Minor leakage found" Refer to «Tank system, test result = "Minor leakage found"»(ref-440283-S07631334942011121400000) Tank system, test result = "Major leakage found" Refer to «Tank system, test result = "Major leakage found"»(ref-440283-S40080858122011121400000) DMTL, test result and Tank system, test result = "Unknown" Refer to «DMTL, test result and Tank system, test result = "Unknown"»(ref-440283-S34388766502011121400000) Cancel fault-tracing. FAULT NOT FOUND: Troubleshooting has been completed.

The status of the leak can be determined by activating the quick test of the fuel tank system
The fault is permanent if leakage is detected when running the quick test of the fuel tank system
The fault is intermittent if no leakage is detected when running the quick test of the fuel tank system
Switch off the ignition to ensure that the status of the quick test for the fuel tank system is "NOT COMPLETED". The test cannot be started if the status is "COMPLETED"
Ignition on
Activate the quick test of the fuel tank system
Read off the battery voltage, the status of the quick test of the fuel tank system and the status of the test phase. Check the parameters according to the conditions for starting the quick test of the fuel tank system. NOTE: The following conditions must be met in order for the quick test of the fuel tank system to be run correctly. Conditions for starting the quick test of the fuel tank system Diagnostic trouble codes (DTC) ECM-4000, ECM-4007, ECM-4010, or ECM-4024 are not stored Engine off, ignition on The battery voltage must be 11-14 V The status of the test phase must be "NOT RUNNING". The status of the quick test for the fuel tank system must be "NOT COMPLETED". NOTE: The battery voltage must be correct throughout the entire test. The test can take up to 10 minutes, depending on the quantity of fuel in the fuel tank. Connect a battery charger if necessary.
Active the quick test for the fuel tank system by clicking the start button. Click the stop button to cancel the test. Check that the quick test has started by reading off the status of the test phase. The test has started when the status of the test phase is "REFERENCE 1". Wait until the test is complete. When the test is completed, the status of the test phase must be "NOT RUNNING" and the status of the quick test for the fuel tank system must be "COMPLETED". If no faults are detected after the quick test of the fuel tank system, the test result for the leak diagnostic module and the fuel tank system will be "NO FAULT FOUND" If a fault is detected after the quick test of the fuel tank system is complete, the test result for the fuel tank system or leak diagnostic unit will be "FAULT FOUND" with the fault type, depending on the fault. HINT: If the test result is "FAULT FOUND" and the fault type is displayed after the completed test, a diagnostic trouble code (DTC) for the fault will be stored in the control module. HINT: Other information: For further information about leak diagnostics, see «Leak diagnostics (certain markets only)»(ref-461766-S21783698202012040200000) For further information about leak diagnostic parameters, see «Description of parameters, quick test of the fuel tank system»(ref-440285-S37807460282011121400000) For information about test phases, see «Test phases»(ref-461751-S07355740392012040200000) . Select an alternative to continue when the test is completed: The test result for the fuel tank system and leak diagnostic unit is "OK, NO FAULT FOUND". Refer to «Intermittent fault»(ref-440283-S28104579142011121400000) The test result for the fuel tank system is "FAULT FOUND, MAJOR LEAK" or "FAULT FOUND, MINOR LEAK". Refer to «Checking components»(ref-440283-S14307043092011121400000) The quick test does not start or the test result for the leak diagnostic unit is "FAULT FOUND" (and the fault type). Refer to «Fault-tracing information»(ref-440283-S08204028632011121400000)

Checking components

Check that the fuel tank filler cap is properly installed and that its seal is not damaged
Check the hoses and connections on the leak diagnostic unit, the EVAP canister, EVAP canister purge valve and fuel filler pipe visually for damage or loose installation
Remedy as necessary. HINT: Diagnostic trouble codes (DTCs) caused by a loose fuel filler cap or hose connection may be difficult to find. If no leakage if detected by the control module when activating the quick test of the fuel tank system after the above checks and remedies, the fault may have been fixed. Other information To test pressurize the fuel tank system, see «Test pressurizing the tank system»(ref-440278-S22082404872011121400000) .

Continue Refer to «Activating the quick test of the fuel tank system»(ref-440283-S05153986542011121400000)

Checking the EVAP canister purge valve

HINT: Leakage through the EVAP canister purge valve can be checked by blocking the hose between the EVAP canister and the purge valve and then running the quick test of the fuel tank system. If leakage was detected in a previous quick test of the fuel tank system but is not now detected when the hose between the EVAP canister and the purge valve is blocked, the leakage may be through the EVAP canister purge valve.

Disconnect the hose between the EVAP canister purge valve and the EVAP canister from the connection to the EVAP canister purge valve. Block the hose while running the quick test of the fuel tank system. Other information: For the location of components on 5 cylinder engines, see «Location of components»(ref-461673-S37190921092012040200000) For the location of components on 6 cylinder turbocharged engines: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .

Continue Refer to «Activating the quick test of the fuel tank system»(ref-440283-S31673776352011121400000)

Try a new EVAP canister purge valve. See «Location of components, engine compartment»(ref-440286-S07948714472011121400000) .

Continue Refer to «Verification»(ref-440283-S12216087882011121400000)

WARNING

First read Safety regulations for handling fuel

HINT: The fault may be due to leakage in the fuel tank, fuel filler pipe, fuel tank filler cap, evaporative emission (EVAP) canister, EVAP canister purge valve, leak diagnostic unit or in the hoses between these components.

Ignition off
Pressurize the tank system to locate any leaks. See «Test pressurizing the tank system»(ref-440278-S22082404872011121400000) . When the fuel tank system is pressurized: Check the fuel tank system for leakage by spraying soap solution on the components for the fuel tank system, such as the tank, fuel filler pipe, fuel tank filler cap, EVAP canister purge valve, EVAP canister and the hoses and hose terminals between these components. Remedy as necessary. Reinstall components, hoses etc. If no leakage can be found in the fuel tank system after the above checks and corrective action but the fault remains after the quick test, the leak diagnostic unit may be defective. Run a quick test of the fuel tank system after the above checks and corrective action to check if the fault is still present. Other information: To lower the tank, see «Replacing the fuel tank»(ref-440269-S13317846432011121400000)

Continue Refer to «Activating the quick test of the fuel tank system»(ref-440283-S14748046412011121400000)

Ignition off. Try a new leak diagnostic unit. See «Leak diagnostic pump, replacing»(ref-440269-S15712613922011121400000) .

Continue Refer to «Verification»(ref-440283-S12216087882011121400000)

The control module cannot run the leak diagnostic when the quick test of the fuel tank system is activated. This may be because the conditions for starting the quick test of the fuel tank system have not been met, that the fault occurred during fault-tracing or that the fault existed before the fault-tracing began. Check that all conditions for starting the quick test of the fuel tank system are met and that all hoses, connectors, components etc. are correctly reinstalled and undamaged
The quick test for the fuel tank system cannot be run if the battery voltage varies too much. The voltage may vary if the battery is being charged with a battery charger. Charge the battery before beginning the quick test to avoid voltage variations. HINT: Cancel fault-tracing for this fault. Then read off diagnostic trouble codes (DTCs) from the vehicle communication socket. Fault trace any other diagnostic trouble codes (DTCs) stored in the control module.
Remedy as necessary. Select a suitable alternative to continue: Start this fault-tracing from the beginning again Refer to «Checking other diagnostic trouble codes (DTCs)»(ref-440283-S40819399702011121400000) Cancel fault-tracing for this fault. FAULT NOT FOUND: Troubleshooting has been completed.

Intermittent fault

The control module has previously detected a leak in the tank system but the fault is no longer active. The fault may be due to leakage in the fuel tank, fuel filler pipe, fuel tank filler cap, evaporative emission system (EVAP) canister, EVAP canister purge valve, leak diagnostic unit or in the hoses between these components.

Other information

To check the fuel tank system for leakage, see «Test pressurizing the tank system»(ref-440278-S22082404872011121400000)
For the location of components on 5 cylinder engines, see «Location of components»(ref-461673-S37190921092012040200000)
For the location of components on 6 cylinder turbocharged engines: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
To replace the leak diagnostic unit, see «Leak diagnostic pump, replacing»(ref-440269-S15712613922011121400000) .

Continue Refer to «Verification»(ref-440283-S12216087882011121400000)

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

Switch off the ignition to ensure that the status of the quick test for the fuel tank system is "NOT COMPLETED". The test cannot be started if the status is "COMPLETED"
Ignition on
Activate the quick test of the fuel tank system
Read off the battery voltage, the status of the quick test of the fuel tank system and the status of the test phase. Check the parameters according to the conditions for starting the quick test of the fuel tank system. NOTE: The following conditions must be met in order for the quick test of the fuel tank system to be run correctly. Conditions for starting the quick test of the fuel tank system Diagnostic trouble code (DTC) ECM-4000, ECM-4007, ECM-4010, or ECM-4024 is not stored Engine off, ignition on The battery voltage must be 11-14 V The status of the test phase must be "NOT RUNNING". The status of the quick test for the fuel tank system must be "NOT COMPLETED". NOTE: The battery voltage must be correct throughout the entire test. The test can take up to 10 minutes, depending on the quantity of fuel in the fuel tank. Connect a battery charger if necessary.
Active the quick test for the fuel tank system by clicking the start button. Click the stop button to cancel the test. Check that the quick test has started by reading off the status of the test phase. The test has started when the status of the test phase is "REFERENCE 1". Wait until the test is complete. When the test is completed, the status of the test phase must be "NOT RUNNING" and the status of the quick test for the fuel tank system must be "COMPLETED". If no faults are detected after the quick test of the fuel tank system, the test result for the leak diagnostic module and the fuel tank system will be "NO FAULT FOUND" If a fault is detected after the quick test of the fuel tank system is complete, the test result for the fuel tank system or leak diagnostic unit will be "FAULT FOUND" with the fault type, depending on the fault. Other information For further information about leak diagnostics, see «Leak diagnostics (certain markets only)»(ref-461766-S21783698202012040200000) For information about test phases, see «Test phases»(ref-461751-S07355740392012040200000) .

Is the test result "NO FAULT FOUND" for both the leak diagnostic unit and the fuel tank system?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S12022026152011121400000)

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.

Leakage

See Leakage

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

Ignition off
Reconnect the connectors, reinstall components etc.
Test drive the vehicle on the road. Run a TRIP schedule so that the engine control module (ECM) compares the diagnostics. To run a TRIP schedule, see: «Verifying repairs»(ref-440264-S06906222842011121400000)
Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S13318321172011121400000)

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

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

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

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

See Signal missing. Intermittent fault

Ignition off.
Check the canister valve's connector for contact resistance and oxidation acc. to: «Checking wiring and terminals. Permanent fault»(ref-461653-S02326395152012040200000)
Restore components and connectors.
Ignition on.
Activate the canister valve. A "click" sound must be heard when the canister valve is activated. If the canister valve now is OK, this indicates that the problem has been caused by poor contact in the connector. Other information To access/replace the canister valve, see: «Replacing the shut-off valve for the carbon filter container»(ref-440269-S03830602672011121400000) For information about signals 5-cylinder engine, see: «Signal specification»(ref-440214-S33124753252011121400000) For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Does the canister valve work?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking the components and wiring»(ref-440283-S13787135562011121400000)

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

Scheme 186

Ignition off.
Reconnect connectors, reinstall components.
Ignition on.
Activate EVAP canister shut-off valve. A "click" should be heard when the EVAP canister shut-off valve is activated.

Is the EVAP canister shut-off valve working?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S28694523272011121400000)

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

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

See Signal missing. Permanent fault

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

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

See Signal too high. Intermittent fault

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

Ignition off.
Reconnect connectors, reinstall components.
Ignition on.
Activate EVAP canister shut-off valve. A "click" should be heard when the EVAP canister shut-off valve is activated.

Is the EVAP canister shut-off valve working?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S35645279742011121400000)

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

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

See Signal too high. Permanent fault

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

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

See Signal too low. Intermittent fault

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

Ignition off.
Reconnect connectors, reinstall components.
Ignition on.
Activate EVAP canister shut-off valve. A "click" should be heard when the EVAP canister shut-off valve is activated.

Is the EVAP canister shut-off valve working?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S14467039632011121400000)

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

Ignition on. Activate the valve in the leak diagnostic unit to check whether the fault is permanent or intermittent. The valve clicks when it is activated. The fault is permanent if the valve does not activate. The fault is intermittent if the valve activates.

Continue Refer to «Checking components and wiring»(ref-440283-S27128404312011121400000)

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

Ignition on
Activate the valve in the leak diagnostic unit. The valve should click. Check that the function is OK.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S42390777642011121400000)

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

Ignition on. Activate the valve in the leak diagnostic unit to check whether the fault is permanent or intermittent. The valve clicks when it is activated. The fault is permanent if the valve does not activate. The fault is intermittent if the valve activates.

Continue Refer to «Checking components and wiring»(ref-440283-S20036220862011121400000)

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

Ignition on
Activate the valve in the leak diagnostic unit. The valve should click. Check that the function is OK.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S37484946422011121400000)

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

Ignition on. Activate the valve in the leak diagnostic unit to check whether the fault is permanent or intermittent. The valve clicks when it is activated. The fault is permanent if the valve does not activate. The fault is intermittent if the valve activates.

Continue Refer to «Checking the wiring»(ref-440283-S16181172942011121400000)

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

Ignition on
Activate the valve in the leak diagnostic unit. The valve should click. Check that the function is OK.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S09546349232011121400000)

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

Check that the hose between the EVAP canister and EVAP canister shut-off valve is not blocked or pinched.

Check that the EVAP canister connector to the EVAP canister shut-off valve is not blocked.

Check EVAP canister shut-off valve and filter for dirt and deposits.

Try to activate the EVAP canister shut-off valve to check its function.

Continue Refer to «Information»(ref-440283-S04502624252011121400000)

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).

Checking the tank pressure sensor

Open the filler cap.
Start the engine and let it remain idle. Read the tank pressure. HINT: The tank pressure must be greater than -10 hPa. The normal value is close to 0 hPa.

Is the tank pressure OK?

YES Refer to «Checking the EVAP valve»(ref-440283-S11629808302011121400000)
NO Refer to «Verification»(ref-440283-S36491305352011121400000)

Checking the EVAP valve

Remove the hose that runs between the EVAP valve and the canister from the EVAP valve.
Start the engine and let it remain idle. Read the EVAP valve pulse signal. When the pulse signal is 0%, there must not be any vacuum in the EVAP valve. Additional information For location of components, B52X4 T, see «Location of components»(ref-461673-S37190921092012040200000) . For location of components, B6304 S: For 6 cylinder normally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder normally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder normally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) . . For the location of components on 6 cylinder turbocharged engines: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) . To access/replace the EVAP valve, see «Replacing the canister purge (CP) valve»(ref-461762-S33100414982012040200000) .

Is the value correct?

YES Refer to «Checking the hoses»(ref-440283-S20156996512011121400000)
NO Refer to «Verification»(ref-440283-S36491305352011121400000)

Checking the hoses

Check that the canister valve is not sealed.

Check that the canister valve filter is not sealed.

Check the hose between the canister and canister valve and the hose between the canister valve and its filter for blockage and clamping.

Check the canister valve's connection to the canister for blockage.

Do the necessary corrective action.

To access/replace the canister valve, see «Replacing the shut-off valve for the carbon filter container»(ref-440269-S03830602672011121400000) .

Continue Refer to «Verification»(ref-440283-S36491305352011121400000)

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

Start the engine. Activate the quick fuel tank system test.

Is the value OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S29685179712011121400000)

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

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

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

Ignition off
Reconnect the connectors, reinstall components etc.
Test drive the vehicle on the road. Run a TRIP schedule so that the engine control module (ECM) compares the diagnostics. To run a TRIP schedule, see: «Verifying repairs»(ref-440264-S06906222842011121400000)
Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S18684269172011121400000)

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 fuel tank pressure sensor connector for contact resistance and oxidation according to Contact resistance and oxidation . Check for damage carefully.

Other information

For information about signals, see «Signal specification»(ref-440214-S08085428982011121400000) .

Scheme 187

Continue Refer to «Information»(ref-440283-S40691735412011121400000)

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

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

Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

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

Ignition off.
Reconnect connectors, reinstall components.
Start the engine. Read off fuel tank pressure. The fuel tank pressure should be approximately 0 hPa (0 psi) when the fuel tank filler cap is open.

Is the fuel tank pressure OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S11738489512011121400000)

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

Check fuel tank pressure sensor connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals) . Check particularly for any damage.

Check ground lead between control module #B4 (#B14) and fuel tank pressure sensor connector #1 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Check signal cable between control module #B31 (#B41) and fuel tank pressure sensor connector #2 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Check power supply cable between control module #B10 (#B20) and fuel tank pressure sensor connector #3 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Check signal cable between control module #B31 (#B41) and fuel tank pressure sensor connector #2 for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

HINT: Use a test screwdriver with at least a 3 W bulb to determine if the cable is short-circuited to supply voltage.

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
For information about signals, see «Signal specification»(ref-440214-S08085428982011121400000) .

Continue Refer to «Information»(ref-440283-S06799386602011121400000)

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

Ignition off
Check the fuel tank pressure sensor connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-461653-S26956869552012040200000) . Also check for loose connections according to «Loose connections (terminals)»(ref-461653-S11251226332012040200000) . Check for damage carefully.
Assemble the connector
Start the engine Read off the fuel tank pressure. The fuel tank pressure should be approximately 0 hPa when the fuel tank filler cap is open Other information For specifications see «Component specifications»(ref-461750-S31036760162012040200000) . For information about signals, see «Signal specification»(ref-440214-S08085428982011121400000) .

Is the fuel tank pressure ok?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking the connector»(ref-440283-S15148038172011121400000)

Check the ground lead between control module terminal B4 (#B14) and fuel tank pressure sensor connector terminal 1. Check the ground lead between control module terminal B31 (#B41) and fuel tank pressure sensor connector terminal 2 for an open-circuit according to Open-circuit, permanent faults .

Check the power supply cable between control module terminal B10 (#B20) and fuel tank pressure sensor connector terminal 3 for an open-circuit according to Open-circuit, permanent faults .

Check the signal cable between control module terminal B31 (#B41) and fuel tank pressure sensor connector terminal 2 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

HINT: Use a test screwdriver with at least a 3 W bulb to determine if the cable is short-circuited to supply voltage

Other information

Connecting the breakout box / accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
For information about signals, see «Signal specification»(ref-440214-S08085428982011121400000) .

Continue Refer to «Verification»(ref-440283-S29742662622011121400000)

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

Ignition off.
Reconnect connectors, reinstall components.
Start the engine. Read off fuel tank pressure. The fuel tank pressure should be approximately 0 hPa (0 psi) when the fuel tank filler cap is open.

Is the fuel tank pressure OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S18100893422011121400000)

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

Check signal cable between control module #B31 (#B41) and fuel tank pressure sensor connector #2 for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Check power supply cable between control module #B10 (#B20) and fuel tank pressure sensor connector #3 for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
For information about signals, see «Signal specification»(ref-440214-S08085428982011121400000) .

Continue Refer to «Information»(ref-440283-S10486031872011121400000)

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

Ignition off
Check the fuel tank pressure sensor connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-461653-S26956869552012040200000) . Also check for loose connections according to «Loose connections (terminals)»(ref-461653-S11251226332012040200000) . Check for damage carefully.
Assemble the connector
Start the engine Read off the fuel tank pressure. The fuel tank pressure should be approximately 0 hPa when the fuel tank filler cap is open Other information For specifications see «Component specifications»(ref-461750-S31036760162012040200000) . For information about signals, see «Signal specification»(ref-440214-S08085428982011121400000) .

Is the fuel tank pressure ok?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking the wiring»(ref-440283-S04299659162011121400000)

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

Ignition off.
Reconnect connectors, reinstall components.
Start the engine. Read off fuel tank pressure. The fuel tank pressure should be approximately 0 hPa (0 psi) when the fuel tank filler cap is open.

Is the fuel tank pressure OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440283-S42429156892011121400000)

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

Fault-tracing is not followed by verification for this fault.

HINT: After the diagnostic trouble codes (DTCs) are erased, the function of the leak diagnostic unit can be checked by running a quick test of the fuel tank system in the vehicle communication socket. If there is a fault, the fault status will be "FAULT FOUND" on the leak diagnostic unit.

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

See Signal missing

Fault-tracing is not followed by verification for this fault.

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

See Signal too high

Fault-tracing is not followed by verification for this fault.

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

See Signal too low

See Leakage

Information

No fault-tracing has been developed for this diagnostic trouble code (DTC).

That this trouble code is stored indicates a fault in another control module. Therefore, troubleshoot from the sending control module. This diagnostic trouble code (DTC) can first be erased when the root fault has been remedied and the diagnostic trouble code (DTC) for the root fault has been erased.

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

See Fault-tracing information

Engine Control Module (ECM) Diagnostic Trouble Codes - 6 of 11: Other Volvo S80 I

Emissions impact / Catalytic converter damage / Start up

Checking cables and connectors

Scheme 168

Scheme 169

Fault-tracing information

Signal missing. Intermittent fault

Verification

Checking connector

Signal missing. Permanent fault

Checking cables

Scheme 170

Signal too high. Intermittent fault

Signal too high. Permanent fault

Signal too low. Intermittent fault

Signal too low. Permanent fault

Scheme 171

Scheme 172

Scheme 173

Scheme 174

Signal too high/signal too low. Intermittent fault

Signal too high / signal too low. Permanent fault

Faulty signal or signal missing

Checking the status

Signal too high/signal too low. Permanent fault

Checking fuel injection system, ignition system and components

Checking the fuel injection system, ignition system and components

Scheme 175

Emissions impact / catalytic converter damage

Faulty signal. Permanent fault

Signal missing

Signal too high

Signal too low

Checking the connector

Checking the component

Safety

Checking the engine coolant temperature (ECT)

Checking for blockage between the fuel tank pressure sensor and the fuel tank

Scheme 176

Scheme 177

Scheme 178

Replacing the component

Checking the EVAP canister

Checking the hose

Checking the hose between the fuel tank and the EVAP canister

Scheme 179

Scheme 180

Scheme 181

Checking the fuel tank pressure sensor

Checking the hose to the EVAP canister shut-off valve

Checking the fuel tank pressure sensor hose

Scheme 182

Scheme 183

Checking the fuel tank system

Verification information

Checking the vacuum downstream of the canister purge (CP) valve

Checking the canister purge (CP) valve

Checking hoses

Checking software

Scheme 184

Scheme 185

Checking components

Checking the EVAP canister purge valve

Intermittent fault

Leakage

Scheme 186

Checking the tank pressure sensor

Checking the EVAP valve

Checking the hoses

Scheme 187

Faulty signal. Intermittent fault

Information

More articles — Engine Control Module (ECM) Diagnostic Trouble Codes - 6 of 11

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