HINT: The diagnostic trouble code (DTC) may due to a damaged cooling fan for the control module boxes. If diagnostic trouble code (DTC) ECM-680X is stored it must be remedied first.

Activate the cooling fan for the control module box. Check the function. There must be a buzzing noise from the cooling fan when the fan for the control module box is activated.

Check that the air ducts for the control module box are not blocked.

Remedy as necessary.

Other information

For the location of components: For turbocharged engines -2001, see «Location of components»(ref-430982-S15631897472011101900000) For turbocharged engines 2002, see «Location of components, engine compartment»(ref-430982-S26522438492011101900000) For turbocharged engines 2003-, see «Location of components, engine compartment»(ref-430982-S36428841102011101900000) For B5254T4 2004-, see «Location of components, engine compartment»(ref-430982-S37883263132011101900000) .

Scheme 775

Continue Refer to «Information»(ref-430993-S34257026112011101900000)

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.

Faulty signal

See Faulty signal

Information

This diagnostic trouble code (DTC) indicates that the immobilizer code does not match between the engine control module (ECM) and the central electronic module (CEM). This may be because

the immobilizer code in the engine control module (ECM) is incorrect i. e. the code does not correspond to the code stored in the central electronic module (CEM)
the engine control module (ECM) is not programmed and has no immobilizer code
the immobilizer code in the central electronic module (CEM) is incorrect
the central electronic module (CEM) is not programmed and has no immobilizer code
the engine control module (ECM) is damaged
the central electronic module (CEM) is damaged.

Note. A programmed engine control module (ECM) or central electronic module (CEM) cannot be moved from one vehicle to another.

HINT: Read off the diagnostic trouble codes (DTCs) for the central electronic module (CEM).

Other information

To access and replace the engine control module (ECM), see «Engine control module (ECM), replacing»(ref-430961-S10976842282011101900000)
To access or replace the central electronic module (CEM), see «Central electronic module (CEM), replacing»(ref-430924-S13972874222011101900000)
For information about signals: For turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «Signal specification (B5204T5, B5234T3, B5234T7 and B5244T3 -2004)»(ref-430993-S39229555932012011600000) For B5254T4 2004, see «Signal specification (B5254T4 2004)»(ref-430993-S15375757242012011600000) For turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) .

Continue Refer to «Verification»(ref-430993-S09110001342011101900000)

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

Ignition off
Reinstall connectors, components etc.
Start the engine.

Did the engine start?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S04057974482011101900000)

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

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

See Fault-tracing information

The immobilizer function is integrated in the central electronic module (CEM).

This diagnostic trouble code (DTC) can be caused by missing CAN communication. If there is a diagnostic trouble code (DTC) stored in the central electronic module (CEM) fault trace accordingly.

If no diagnostic trouble codes (DTCs) are stored in the central electronic module (CEM), try a new central electronic module (CEM).

Other information

To access or replace the central electronic module (CEM), see «Central electronic module (CEM), replacing»(ref-430924-S13972874222011101900000)
To access and replace the engine control module (ECM), see «Engine control module (ECM), replacing»(ref-430961-S10976842282011101900000)
For signal specifications for the central electronic module (CEM): -2004: «Signal specification»(ref-430923-S11016915192011101900000) 2005-: «Signal specification»(ref-430923-S34441278402011101900000)
For information about signals: For turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «Signal specification (B5204T5, B5234T3, B5234T7 and B5244T3 -2004)»(ref-430993-S39229555932012011600000) For B5254T4 2004, see «Signal specification (B5254T4 2004)»(ref-430993-S15375757242012011600000) For turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) .

Continue Refer to «Information»(ref-430993-S09774043472011101900000)

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. Intermittent 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

HINT: The fault may be due to a defective cooling fan for the control modules. If diagnostic trouble code (DTC) ECM-6220 is stored it must be remedied first.

Activate the cooling fan for the control modules. Check the function. There must be a buzzing noise from the cooling fan when the fan for the control modules is activated.

Check that the air ducts for the control module box are not blocked.

Remedy as necessary.

Other information

For the location of components: For turbocharged engines -2001, see «Location of components»(ref-430982-S15631897472011101900000) For turbocharged engines 2002, see «Location of components, engine compartment»(ref-430982-S26522438492011101900000) For turbocharged engines 2003-, see «Location of components, engine compartment»(ref-430982-S36428841102011101900000) For B5254T4 2004-, see «Location of components, engine compartment»(ref-430982-S37883263132011101900000) .

Continue Refer to «Information»(ref-430993-S15888632992011101900000)

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

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

See Faulty signal

See Fault-tracing information

See Faulty signal

See Fault-tracing information

See Signal too high/signal too low. Intermittent fault

See Signal too high/signal too low. Permanent fault

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

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

Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

Faulty signal. Permanent fault

See Faulty signal. Permanent fault

The immobilizer function is integrated in the central electronic module (CEM).

The engine control module (ECM) has previously registered a fault in communication with the central electronic module (CEM), but detects that the fault no longer exists.

Continue Refer to «Information»(ref-430993-S31327296742011101900000)

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

Signal missing. Permanent fault

See Signal missing. Permanent fault

See Internal fault

See Fault-tracing information

Checking connectors and components

Check the engine control module (ECM) and the system relay connectors. Check for contact resistance. Check for oxidation.

Check the cable between system relay terminal #5 and the engine control module (ECM). Check for an open-circuit.

Remedy as necessary.

Try a new system relay if no fault is found during the above fault-tracing.

HINT: Read off the voltage from the system relay to the engine control module (ECM) by clicking on the VCT2000 symbol.

Other information

For information about signals: «Signal specification»(ref-430975-S24350024032011101900000)
See «Checking wiring and terminals»(ref-430909-S26456997912011101900000)

Scheme 776

Continue Refer to «Verification»(ref-430993-S26188541852011101900000)

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

Scheme 777

Scheme 777: Verification

Ignition on
Read off the voltage from the system relay to the engine control module (ECM). Check that the voltage is correct. The voltage must be approximately 12 V.

Is the voltage correct?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S21753305602011101900000)

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 connectors and components

Check the battery voltage.

Check the charging function of the generator (GEN).

Check the engine control module (ECM) and system relay connectors. Check for contact resistance and oxidation.

Check the cable between system relay terminal #5 and control module terminal #A17 (#A17). Check for an open-circuit. Check for a short-circuit to ground.

Remedy as necessary.

Try a new system relay if no fault is found during the above fault-tracing.

HINT: Read off the voltage from the system relay to the engine control module (ECM) by clicking on the VCT2000 symbol.

Other information

To fault-trace the charging system, see «Fault-tracing and testing the voltage supply system»(ref-430915-S34291889552011101900000)
To connect the breakout box and access the control module, see «Connecting the breakout box»(ref-430911-S30587875092011101900000)
For information about signals: For turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «Signal specification (B5204T5, B5234T3, B5234T7 and B5244T3 -2004)»(ref-430993-S39229555932012011600000) For B5254T4 2004, see «Signal specification (B5254T4 2004)»(ref-430993-S15375757242012011600000) For turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) .
See «Checking wiring and terminals»(ref-430909-S26456997912011101900000) .

Continue Refer to «Verification»(ref-430993-S29029619412011101900000)

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

Ignition on
Read off the voltage from the system relay to the engine control module (ECM). Check that the voltage is correct. The voltage must be approximately 12 V.

Is the voltage correct?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S33392377902011101900000)

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

Check the charging function of the generator (GEN). Check for high charging voltage.

Remedy as necessary.

Other information

To fault-trace the charging system, see «Fault-tracing and testing the voltage supply system»(ref-430915-S34291889552011101900000) .

Continue Refer to «Verification»(ref-430993-S12663641652011101900000)

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

Start the engine
Read off the voltage from the system relay to the engine control module (ECM). Check that the voltage is correct. The voltage must be approximately 12 V.

Is the voltage correct?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S08539813322011101900000)

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

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

Signal too high

See Signal too high

Check the battery voltage.

Check the charging function of the generator (GEN).

Check the engine control module (ECM) and system relay connectors. Check for contact resistance and oxidation.

Check the cable between system relay terminal #5 and control module terminal #A17 (#A17). Check for contact resistance and oxidation.

Remedy as necessary.

Try a new system relay if no fault is found during the above fault-tracing.

HINT: Read off the voltage from the system relay to the engine control module (ECM) by clicking on the VCT2000 symbol.

Other information

To fault-trace the charging system, see «Fault-tracing and testing the voltage supply system»(ref-430915-S34291889552011101900000)
To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-430911-S30587875092011101900000)
For information about signals: For turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «Signal specification (B5204T5, B5234T3, B5234T7 and B5244T3 -2004)»(ref-430993-S39229555932012011600000) For B5254T4 2004, see «Signal specification (B5254T4 2004)»(ref-430993-S15375757242012011600000) For turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) .
See «Checking wiring and terminals»(ref-430909-S26456997912011101900000)

Continue Refer to «Verification»(ref-430993-S25980616852011101900000)

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

Ignition on
Read off the voltage from the system relay to the engine control module (ECM). Check that the voltage is correct. The voltage must be approximately 12 V.

Is the voltage correct?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S03333521182011101900000)

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

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

Signal too low

See Signal too low

Checking the cable

Check the cable between system relay terminal #3 and control module terminal #A70 (#B10). Check for an open-circuit. Check for a short-circuit to ground. See Checking wiring and terminals .

Try a new system relay if no fault is found during the above fault-tracing.

Remedy as necessary.

Continue Refer to «Verification»(ref-430993-S10991949322011101900000)

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

Ignition off
Reinstall connectors, components etc.
Start the engine.

Does the engine start?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S24584254322011101900000)

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

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

Replacing the component

Try a new charging regulator.

Was a fault detected?

YES OKAY: Troubleshooting has been completed.
NO FAULT TRACING FAILED: The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Replacing component

Check boost pressure according to Fault-tracing and testing the voltage supply system .

Was a fault detected?

YES OKAY: Troubleshooting has been completed.
NO FAULT TRACING FAILED: The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check the cable between system relay terminal 3 and control module terminal A70 (#B10) for contact resistance and oxidation according to Contact resistance and oxidation .

Other information

To fault-trace the charging system, see «Fault-tracing and testing the voltage supply system»(ref-430915-S34291889552011101900000) .

Scheme 778

Was a fault detected?

YES OKAY: Troubleshooting has been completed.
NO FAULT TRACING FAILED: The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check the battery voltage

Check the generator (GEN) charging voltage

Check the cable between system relay terminal 3 and control module terminal A70 (#B10) for contact resistance and oxidation according to Contact resistance and oxidation .

Other information

To fault-trace the charging system see «Fault-tracing and testing the voltage supply system»(ref-430915-S34291889552011101900000) .

Was a fault detected?

YES OKAY: Troubleshooting has been completed.
NO FAULT TRACING FAILED: The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check the battery voltage.

Check the charging function of the generator (GEN).

Check the fuse before the circuit. If the fuse is blown, check the circuit. Check for a short-circuit to ground.

Check the cable between system relay terminal #5 and control module terminal #A17 (#A17). Check for an open-circuit.

Check the engine control module (ECM) and system relay connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new system relay if no fault is found during the above fault-tracing.

HINT: Read off the voltage from the system relay to the engine control module (ECM).

Other information

To fault-trace the charging system, see «Fault-tracing and testing the voltage supply system»(ref-430915-S34291889552011101900000)
To connect the breakout box and access the control module, see «Connecting the breakout box»(ref-430911-S30587875092011101900000)
For information about signals: For turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «Signal specification (B5204T5, B5234T3, B5234T7 and B5244T3 -2004)»(ref-430993-S39229555932012011600000) For B5254T4 2004, see «Signal specification (B5254T4 2004)»(ref-430993-S15375757242012011600000) For turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) .
See «Checking wiring and terminals»(ref-430909-S26456997912011101900000)

Continue Refer to «Verification»(ref-430993-S09353553672011101900000)

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

Ignition on
Read off the voltage from the system relay to the engine control module (ECM). The voltage must be approximately 12 V.

Is the voltage correct?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S00935914102011101900000)

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 or signal missing

See Faulty signal or signal missing

See Fault-tracing information

See Signal too low

See Internal fault

See Signal too high

See Signal too low

See Faulty signal or signal missing

Installing the mass air flow (MAF) sensor

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

Install the new mass air flow (MAF) sensor.

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

Install the screws. Tighten.

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

Connect the mass air flow (MAF) sensor connector.

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

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

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

Ignition on.
Read off the 5 volt supply. The value must be 5 V.

Is the value OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S16242299722011101900000)

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

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

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

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

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

Ignition on.
Read off the 5 volt supply. The value must be 5 V.

Is the value OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S01217095532011101900000)

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 on.
Read off the 5 volt supply. The value must be 5 V.

Is the value OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S16748555152011101900000)

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 on.
Read off the 5 volt supply. The value must be 5 V.

Is the value OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S35342543252011101900000)

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

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

Checking the status

Ignition on
Read off the status from the stop lamp switch. Check the function of the stop lamp switch by carefully pressing and releasing the brake pedal. Check that the status changes between "OFF" when the brake pedal is unaffected and "ON" when the brake pedal is depressed. If the status of the stop lamp switch changes as described above when the brake pedal is depressed, the fault is intermittent at the moment.

Continue Refer to «Checking the power supply»(ref-430993-S31730140442011101900000)

Scheme 779

Ignition on. Check the power supply to the stop lamp switch. Take readings between stop lamp switch terminal #1 (cable harness side) and the ground terminal. The power supply must be approximately 12 V. If there is no power supply: Check the power supply circuit for stop lamp switch terminal #1 (cable harness side). Check for an open-circuit. Check for a short-circuit to ground. Check for a blown fuse in the circuit. Remedy as necessary. Other information: See «Connecting the breakout box»(ref-430911-S30587875092011101900000) For information about signals: For turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «Signal specification (B5204T5, B5234T3, B5234T7 and B5244T3 -2004)»(ref-430993-S39229555932012011600000) For B5254T4 2004, see «Signal specification (B5254T4 2004)»(ref-430993-S15375757242012011600000) For turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) . See «Stop lamp switch, replacing»(ref-431049-S12057655552011101900000) . See «Checking wiring and terminals»(ref-430909-S26456997912011101900000) .

Continue Refer to «Checking components and wiring»(ref-430993-S12678674412011101900000)

Scheme 780

Scheme 780: Checking components and wiring

Ignition off
Check that the stop lamp switch is correctly installed. Check the resistance of the stop lamp switch with the switch pressed in and with the switch released. Take readings between terminals #1 and #5 (component side) on the stop lamp switch. HINT: The stop lamp switch must be closed when the brake pedal is depressed. The resistance of the stop lamp switch must be infinite when the brake pedal is unaffected. Check the stop lamp switch and engine control module (ECM) connectors. Check for contact resistance and oxidation. Check the cable between stop lamp switch terminal #5 (cable harness side) and engine control module (ECM) terminal #B26 (#B36). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check central electronic module (CEM) connector B. Check for contact resistance and oxidation. Check the cable between stop lamp switch terminal #5 (cable harness side) and central electronic module (CEM) terminal #4B. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Remedy as necessary. Other information: See «Connecting the breakout box»(ref-430911-S30587875092011101900000) For information about signals: For turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «Signal specification (B5204T5, B5234T3, B5234T7 and B5244T3 -2004)»(ref-430993-S39229555932012011600000) For B5254T4 2004, see «Signal specification (B5254T4 2004)»(ref-430993-S15375757242012011600000) For turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) . For resistance values: For turbocharged engines 2001, see «Component specifications»(ref-430975-S12681654262011101900000) . For turbocharged engines 2002, see «Component specifications»(ref-430975-S24294221072011101900000) . For turbocharged engines 2003-, see «Component specifications»(ref-430975-S37637200832011101900000) . For B5254T4 2004-, see «Component specifications»(ref-430975-S19541977602011101900000) . For normally aspirated engines 1999-, see «Component specifications»(ref-451848-S36406831262012020900000) . See «Central electronic module (CEM), replacing»(ref-430924-S13972874222011101900000) See «Checking wiring and terminals»(ref-430909-S26456997912011101900000) .

Continue Refer to «Verification»(ref-430993-S21072271472011101900000)

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

Scheme 781

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on
Read off the status from the stop lamp switch. Check the function of the stop lamp switch by carefully pressing and releasing the brake pedal. Check that the status changes between "OFF" when the brake pedal is unaffected and "ON" when the brake pedal is depressed. If the status of the stop lamp switch changes as described above when the brake pedal is depressed, the fault has been remedied.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S28512307552011101900000)

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 or faulty signal

See Signal missing or faulty signal

Ignition on
Read off the status from the stop lamp switch. Check the function of the stop lamp switch by carefully pressing and releasing the brake pedal. Check that the status changes between "OFF" when the brake pedal is unaffected and "ON" when the brake pedal is depressed. If the status of the stop lamp switch changes as described above when the brake pedal is depressed, the fault is intermittent at the moment.

Continue Refer to «Checking the power supply»(ref-430993-S29559971982011101900000)

Checking the power supply

Ignition on. Check the power supply to the stop lamp switch. Take readings between stop lamp switch terminal #1 (cable harness side) and the ground terminal. The power supply must be approximately 12 V. If there is no power supply: Check the power supply circuit for stop lamp switch terminal #1 (cable harness side). Check for an open-circuit. Check for a short-circuit to ground. Check for a blown fuse in the circuit. Remedy as necessary. Other information: See «Connecting the breakout box»(ref-430911-S30587875092011101900000) For information about signals: For turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «Signal specification (B5204T5, B5234T3, B5234T7 and B5244T3 -2004)»(ref-430993-S39229555932012011600000) For B5254T4 2004, see «Signal specification (B5254T4 2004)»(ref-430993-S15375757242012011600000) For turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) . See «Stop lamp switch, replacing»(ref-431049-S12057655552011101900000) See «Checking wiring and terminals»(ref-430909-S26456997912011101900000)

Continue Refer to «Checking components and wiring»(ref-430993-S06051076132011101900000)

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

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on
Read off the status from the stop lamp switch. Check the function of the stop lamp switch by carefully pressing and releasing the brake pedal. Check that the status changes between "OFF" when the brake pedal is unaffected and "ON" when the brake pedal is depressed. If the status of the stop lamp switch changes as described above when the brake pedal is depressed, the fault has been remedied.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S23088325062011101900000)

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.

Identifying upgraded software ECM/ETM

Upgraded software for the engine control module (ECM) and electronic throttle module (ETM), available during 2006 or later, can be identified. The updated software has the diagnostic number/software number as set out in the table under USA/Canada market .

CAUTION

For the USA/Canada market, with turbocharged engines the software of the engine control module (ECM) can be identified using the software number or diagnostic number , depending on the version of the software involved.

The differences between the first version , which is identified by the software number, and the second version , which is identified by the diagnostic number, include the following

Improved driveability after engine control module (ECM) reset. The start values for some system adaptations are adjusted to facilitate handling of aged/worn systems/components after diagnostic trouble code deletion or when the control module has been without power.
Increased hardiness to certain combinations of aging/wear in the system. The work areas for some adaptations are adjusted to better match the aging of certain components.
Supplements as to which faults are to generate a message to the driver.
Improved serviceability (diagnostic trouble code generation) for some intermittent faults that generate driveability problems.

The electronic throttle module (ETM) is identified solely by the diagnostic number.

If the diagnostic number/software number is within the following series, it is the latest software downloaded

Non-turbo engines (all markets): Engine control module (ECM) diagnostic number 30785129 - 30785132 or 30785667 and electronic throttle module (ETM) 30785387.
Turbocharged engines (USA/Canada market): First version, engine control module (ECM) software number 30785203 - 30785240 and electronic throttle module (ETM) diagnostic number 30785388. Second version, engine control module (ECM) diagnostic number 30785372 - 30785378 and electronic throttle module (ETM) diagnostic number 30785388.

USA/Canada market

Turbo engines ECM (Bosch)/ETM (Magneti Marelli) NOTE: The version letters at the end of the diagnostic number are not accounted for and should be ignored during identification.
Model	Diagnostic number/software number
S70/V70 (-00)/V70 XC (-00)/C70 (-05)	ETM, 1999- : 30785388 (diagnostic number) ECM, 1999: 30785205 (software number) 30785206 (software number) 30785207 (software number) 30785208 (software number) 30785209 (software number) 30785372 (diagnostic number) ECM, 2000: 30785212 (software number) 30785213 (software number) 30785214 (software number) 30785215 (software number) 30785216 (software number) 30785217 (software number) 30785218 (software number) 30785221 (software number) 30785222 (software number) 30785223 (software number) 30785224 (software number) ECM, 2000- : 30785373 (diagnostic number) ECM, 2001: 30785235 (software number) 30785236 (software number) 30785237 (software number) ECM, 2002: 30785238 (software number) 30785239 (software number) 30785240 (software number)
S60/V70 (00-)/V70 XC/ XC70 (01-)/S80 (-06)	ETM, 1999- : 30785388 (diagnostic number) Turbo engines: ECM, -2000: 30785225 (software number) 30785226 (software number) 30785227 (software number) 30785228 (software number) 30785375 (diagnostic number) ECM, 2000- : 30785229 (software number) 30785230 (software number) 30785231 (software number) 30785232 (software number) 30785376 (diagnostic number)

NOTE
The version letters at the end of the diagnostic number are not accounted for and should be ignored during identification.

Non turbo engines ECM (Denso) /ETM (Magneti Marelli) NOTE: The version letters at the end of the diagnostic number are not accounted for and should be ignored during identification.
Model	Diagnostic number
S70/V70 (-00)/C70 (-05)	ETM, 1999- : 30785387 (diagnostic number) ECM, 1999: 30785131 (diagnostic number) ECM, 2000- : 30785132 (diagnostic number)
S60/V70 (00-)/S80 (-06)	ETM, 1999- : 30785387 (diagnostic number) ECM, 1999-2000: 30785667 (diagnostic number) ECM, 2001 : 30785129 (diagnostic number) ECM, 2002 : 30785130 (diagnostic number)

NOTE
The version letters at the end of the diagnostic number are not accounted for and should be ignored during identification.

Checking a short-circuit in CAN cables

Connect an ohmmeter between the relevant CAN cable (CAN-L and CAN-H) and the power supply, and between the CAN cable and ground. Twist the connectors and turn the cable harness to different positions at each reading to determine any intermittent short-circuits.

Take the following readings

The resistance between CAN-L and ground
The resistance between CAN-L and voltage
The resistance between CAN-H and ground
The resistance between CAN-H and voltage.

The resistance must be infinite or very high in all cases (greater than 1 Mohms).

HINT: The reading can be taken from the same connector if the CAN cables, power supply and ground are exposed. If possible, take readings on the rear of the connector to prevent damage to the terminals in the connector. If this is not possible, use the adapter wiring or loose terminal pins to obtain a good contact.

Was a fault detected?

YES Refer to «Identifying fault causes in the CAN network»(ref-430993-S19360457712011101900000)
NO Refer to «Checking the traffic load on the CAN cables»(ref-430993-S27960507982011101900000)

Checking the traffic load on the CAN cables

Connect the battery
Ignition on Also read: «Battery, disconnecting»(ref-430959-S32245976082011101900000) Faults in the CAN network may be due to a control module sending faulty messages that disrupt "normal" communication. When messages are sent incorrectly, this results in a considerable increase in the amount of traffic on the CAN network. Check the load by measuring the average voltage value on the CAN cables in relation to ground. Connect a voltmeter between CAN-L and ground. The voltage must be approximately 2.3 V. Then connect a voltmeter between CAN-H and ground. The voltage must be approximately 2.8 V. HINT: If possible measure from the rear of the affected connectors so that they are not damaged.

Is the value OK?

YES Refer to «Information - intermittent fault»(ref-430993-S14125120522011101900000)
NO Refer to «Identifying a control module in the CAN network»(ref-430993-S36363117652011101900000)

Identifying fault causes in the CAN network

Disconnect a control module that disconnects the CAN network (a control module that has four terminals to the CAN network). HINT: For the low speed network, suitable places for disconnecting the network are at the steering wheel module (SWM), the driver information module (DIM) or the climate control module (CCM). In the event of a short-circuit between one of the CAN cables and voltage or ground, the fault can be located by disconnecting a control module that disconnects the CAN network. Readings can then be taken to determine on which side of the disconnected control module the fault is located. Connect an ohmmeter between the CAN cable and supply voltage or ground. Take readings at both ends of the CAN network where the network is disconnected. Twist and bend the cable harness to locate any intermittent short-circuits. The resistance must be infinite or very high (greater than 1Mohms). If a fault can be localized in one direction, disconnect the network at a point further down on the CAN network in the direction in which the fault was discovered and repeat the reading. In this way, try to identify where in the network the fault might be located. HINT: A short-circuit between the CAN cables and supply voltage or ground may be in either the wiring or in a control module. Rectify the wiring as necessary. Replace the control module if the fault has been localized to a control module.

Continue Refer to «Verification»(ref-430993-S01439442382011101900000)

Identifying a control module in the CAN network

Connect the battery Also read: «Battery, disconnecting»(ref-430959-S32245976082011101900000)
Ignition on If the load on the CAN network is too high, this may be due to a control module sending faulty messages on the CAN network (known as a disruptive control module). The fault may also be due to an intermittent short-circuit to supply voltage or ground in one of the CAN cables. This results in the control modules on the CAN network starting to send faulty messages. The faults can occur without a diagnostic trouble code (DTC) being stored by the control modules. The voltage can be measured between the CAN cables in order to check the load on the CAN network. Connect a voltmeter between the CAN cables. If the communication on the network is correct, the average voltage value should be approximately 0.5 V (0.4 V to 0.6 V). If there is a fault in the communication, the voltage reading will be approximately 0.7 V or higher. In order to identify from which control module the faulty communication is being transmitted, cut the supply voltage to one control module at a time and check the voltage in the CAN cables again. The easiest way to cut the supply voltage is to remove a fuse. Repeat until the voltage between the CAN cables drops to approximately 0.5 V. HINT: When the probable faulty control module has been identified, connect and disconnect the supply voltage to the control module a number of times to verify that the fault appears and disappears. NOTE: Do not cut the power to the central electronic module (CEM) unless it is the last control module left to check. The control module that is communicating incorrectly must be replaced. Remedy as necessary. NOTE: Following a fault involving "disruptive" control modules, other modules may remain in "Limp-Home mode" even after switching the ignition off and on a number of times. To remedy this, disconnect and reconnect the battery negative terminal to restore the control modules to normal function.

Continue Refer to «Verification»(ref-430993-S01439442382011101900000)

Disconnect a control module that disconnects the CAN network (a control module that has four terminals to the CAN network). HINT: For the low speed network, suitable places for disconnecting the network are at the steering wheel module (SWM), the driver information module (DIM) or the climate control module (CCM). In the event of an open-circuit or a short-circuit between the CAN cables, the fault can be localized by disconnecting a control module that disconnects the CAN network. Readings can then be taken to determine on which side of the disconnected control module the fault is located. Connect an ohmmeter between the CAN cables. Take readings at both ends of the CAN network where the network is disconnected. Twist and bend the cable harness to locate any intermittent short-circuits. The resistance must be 120 ohm. If a fault can be localized in one direction, disconnect the network at a point further down on the CAN network in the direction in which the fault was discovered and repeat the reading. In this way, try to identify where in the network the fault might be located. Remedy the cables as necessary.

Continue Refer to «Verification»(ref-430993-S01439442382011101900000)

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

Reinstall the connectors, components, etc.
Ignition on
Erase diagnostic trouble codes by clicking the VCT2000 symbol
Start the car. Allow the car to run for 10 minutes.
Read off diagnostic trouble codes (DTCs). Check if a diagnostic trouble codes (DTCs) for communication fault recurs in the central electronic module (CEM).

Does the diagnostic trouble code (DTC) recur?

YES Refer to «Information»(ref-430993-S25245867572011101900000)
NO OKAY: Troubleshooting has been completed.

Verification shows that the fault is no longer present. The diagnostic trouble code (DTC) was probably caused by an intermittent fault.

Fault-tracing for this diagnostic trouble code (DTC) is not followed by a verification.

You can view the information again or exit fault-tracing for this diagnostic trouble code (DTC).

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.

Too-high: signal/signal missing/too low signal.

See Too high signal/signal missing/too low signal.

Replacing engine control module (ECM) and programming

Engine control module (ECM) has registered an internal fault.

CAUTION

A new engine control module (ECM) is delivered without software. For the engine control module (ECM) to function after replacement the engine control module (ECM) must be programmed.

For information about programming and replacing the engine control module (ECM), see Engine control module (ECM), replacing .

Continue Refer to «Information»(ref-430993-S05862548742011101900000)

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.

Engine control module (ECM) registered a fault previously but has detected that the fault is no longer present.

Continue Refer to «Information»(ref-430993-S16063109772011101900000)

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 Too high signal/signal missing/too low signal.

See Fault-tracing information

Example of use of the frozen values

Faults can be intermittent, which is important to remember when fault-tracing for possible causes. If the fault is not present when the vehicle is in the workshop, a fault cause can be missed as the values can be correct when fault-tracing is carried out. A good indication of when the fault occurred the first time are the frozen values that can be read out using VIDA/Details.

The frozen values are stored immediately after a fault has been detected. Most parameters in the frozen values are the same for all faults and indicates a general status when a fault has been detected, e. g. engine speed, load, coolant temperature, vehicle speed and battery voltage. Some of them have been selected to give a better understanding of the specific fault. Diagnostic Trouble Code (DTC) ECM-903F Throttle position (TP) can be used as an example of how the frozen values can be used (this is only one example and there may be deviations in reality).

One of the checks given in fault-tracing is "voltage supply to throttle unit" and continues with a suggestion to check the battery and charging system. However, the battery's condition, with the vehicle in the workshop, does not show the battery voltage when the fault was detected. The best information is in the frozen values, i. e. the voltage that the Engine control module (ECM) detected, when the Electronic throttle module (ETM) indicated the fault.

However, remember that this is not an indication of the voltage supply to the Electronic throttle module (ETM), but to the Engine control module (ECM). If the Engine control module (ECM), according to the frozen values, had a good voltage, the battery worked. The voltage supply to the Electronic throttle module (ETM) should therefore be checked separately.

Frozen values for ECM-903F
Status, lambda control bank 1 = LR: Closed circuit with two sensors
Status, lambda control bank 2 = LR: Closed circuit with two sensors
Calculated load = 4.71 %
Engine coolant temperature = 87 °C
Fuel trim, quick adjustment, bank 1= 15.63%
Fuel trim, slow adjustment, bank 1 = -0.78%
Fuel trim, quick adjustment, bank 2 = 23.44%
Fuel trim, slow adjustment, bank 2 = -0.78%
Engine speed = 760 RPM
Vehicle speed = 0 km/h
Boost pressure = 30%
Battery voltage = 12.50 V
Throttle angle, desired value = 14.84%
Air mass = 23.8 kg/h Outdoor temperature = 33 °C

In this case, we assume that the vehicle had a low battery voltage in the workshop. As seen in the frozen values however, the battery voltage was correct when the fault occurred, and this was therefore probably not the cause. This is an example of how the frozen values can be used, to make fault-tracing more efficient and prevent taking too much time fault-tracing incorrectly. This prevents fault-tracing and correcting a fault that was not actually the cause of the problem, which was originally to be solved.

The odometer setting (km) is included among the frozen values in the Engine control module (ECM). This makes a fast comparison with the odometer counter possible, so that one can determine if the fault occurred as part of the fault-tracing and can be ignored.

For example, the CAN related diagnostic Trouble Codes (DTCs) can be detected when the battery voltage drops when working on the vehicle, by the passenger compartment lighting and other loads draining the battery. The frozen values indicate the odometer setting in km. Multiplying this value by 0.62 gives the distance in miles. The current distance in miles and km can be read out using VIDA.

The following should be taken into account when using frozen values for fault-tracing. The frozen values, that should be used with care, are those that have been stored for CAN and are related to Diagnostic Trouble Codes (DTCs) for the Electronic throttle module (ETM).

If the Electronic throttle module (ETM) detects that the communication to the Engine control module (ECM) is interrupted, error flags are stored in the Electronic throttle module (ETM). These error flags are sent to the Engine control module (ECM) as soon as communication on the CAN is working again. This means that the Engine control module (ECM) stores the Diagnostic Trouble Codes (DTCs) as soon as the Electronic throttle module (ETM) supplies them.

This, in turn means that it is at this time that the frozen values are stored. For the Electronic throttle module (ETM) this means that the frozen values occur from a point in time after the fault first occurred.

Explanation

Not all the parameters described need to be implemented in the control module. This varies from system to system.

Frozen values are parameter values that are stored when a diagnostic trouble code (DTC) is stored.

Bank 1 indicates all cylinders on 5-cylinder engines.

Condition, fuel trim bank X

Fuel trim can assume 5 different conditions

no fuel trim, the start conditions have not been met. . This condition occurs at the crank or immediately after start before fuel trim has started
fuel trim with 2 probes . This situation occurs during driving when both probes are used during fuel trim (part load).
no fuel trim, operation with predefined values . This situation occurs during hard acceleration or during fuel shut-off when there is no fuel trim and operation is under predefined values.
no fuel trim, operation with system fault . This situation occurs when an earlier diagnostic trouble code (DTC) was stored that caused the fuel trim to be disabled
fuel trim with one probe (front) . This situation occurs at idling speed or during light acceleration when one probe (front) is used during fuel trim.

Calculated load, %

Indicates the calculated engine load. The value is given as a percentage of full load.

Engine coolant temperature (ECT), °C

Indicates the engine temperature. The value is given in °C.

Engine speed, RPM

Indicates the engine speed (RPM). The value is given in RPM

Vehicle speed, km/h

Indicates the vehicle speed. The value is given in km/h.

Boost pressure

Indicates the engine volumetric efficiency. The value is given as a % compared to the atmospheric pressure (during positive boost pressure the value will be higher than 100%).

Battery voltage

Indicates the system voltage. The value is given in volts.

Throttle angle

Indicates the throttle angle. The value is given as a percentage of maximum reading.

Air mass

Indicates the mass air flow. The value is given in kg/h.

Outside temperature

Indicates the outside temperature. The value is given in °C.

Distance

Indicates the mileage when the diagnostic trouble code (DTC) was stored. The value is given in km.

Read off fault type

Actual fault type with data.

Previous fault type

This fault type may be the same as above, although not necessarily.

All read off data is based on this fault type.

Time before the data was frozen

How long the fault existed before the frozen values were created.

Time after engine start

How long since the engine was started.

Displays the actual outside temperature when the frozen values were created. The value is given in °C.

Atmospheric pressure

Displays the actual atmospheric pressure when the frozen values were created. The value is given in hPa.

Vehicle speed

Displays the actual vehicle speed when the frozen values were created. The value is given in km/h.

Engine speed

Displays the actual engine speed (RPM) when the frozen values were created. The value is given in RPM.

Mass air flow g/stroke

Displays the actual mass air flow in g/stroke when the frozen values were created.

Intake pressure

Displays the actual pressure in the intake manifold when the frozen values were created. The value is given in hPa.

Engine coolant temperature (ECT)

Displays the actual engine temperature when the frozen values were created. The value is given in °C.

Lambda compensation

Lambda compensation is rapid adjustment of the fuel adaptation value which continually adjusts the fuel air mixture. The area of adjustment is between 0-2. The normal value is 1 (no adaptation).

Long term fuel trim

Long term fuel trim is slow adjustment of the fuel trim value that is used to adapt the fuel / air mixture during longer periods. This value takes into consideration factors such as the aging of components and component tolerances etc. The area of adjustment is between 0-2. The normal value is 1 (no adaptation).

Accelerator pedal (AP) affected

Indicates whether the accelerator pedal (AP) was depressed or not when the frozen values were created.

Probe control

Indicates whether the engine was regulated using fuel trim or not when the frozen values were created.

Fuel shut-off system

Indicates whether the fuel shut-off system was active or not when the frozen values were created.

Operating cycle

Indicates whether the engine was active or not when the frozen values were created.

This happens when the engine speed (RPM) exceeds 600 RPM

Warm-up cycle

Indicates whether a warm-up cycle had been run or not when the frozen values were created.

A warm-up cycle is run if the engine coolant temperature (ECT) is between -7° C and +35° C when the engine is started.

Gear selected

Indicates whether a gear was selected or not when the frozen values were created.

Engine cooling fan (FC)

Indicates whether the engine cooling fan (FC) was active or not when the frozen values were created.

A/C requested

Indicates whether the air conditioning (A/C) was selected or not when the frozen values were created.

Air-conditioning: (A/C) compressor active

Indicates whether the air conditioning (A/C) compressor was active or not when the frozen values were created.

Brake pedal switch

Indicates whether the brake pedal was affected or not when the frozen values were created.

EVAP canister purge valve active

Indicates whether the EVAP canister purge valve was active or not when the frozen values were created.

Cruise control active

Indicates whether the cruise control was active or not when the frozen values were created.

EVAP canister shut-off valve

Indicates whether the EVAP canister shut-off valve was active or not when the frozen values were created.

State, fuel trim

Depending on the prevailing circumstances when the frozen values were created, one of the following alternatives may be stored.

no fuel trim, the start conditions have not been met . This condition occurs at the crank or immediately after start before fuel trim has started
fuel trim with two probes . This situation occurs during driving when both probes are used during fuel trim (part load)
no fuel trim, operation with predefined values . This situation occurs during hard acceleration or during fuel shut-off when there is no fuel trim and operation is under predefined values
no fuel trim, operation with a system fault . This situation occurs when an earlier diagnostic trouble code (DTC) was stored that caused the fuel trim to be disabled
fuel trim with one probe (front) . This situation occurs at idling speed or during light acceleration when one probe (front) is used during fuel trim.

Displays the actual battery voltage when the frozen values were created.

Passenger compartment temperature

Displays the temperature in the passenger compartment in the instant the frozen values were created.

Odometer setting

Displays the odometer setting in the instant the frozen values were created.

Software is not upgraded

As described in the diagnostic trouble code information, the engine control module (ECM) checks that the actual throttle angle matches the desired angle. If the throttle angle does not match, diagnostic trouble code ECM-903F is stored. The diagnostic trouble code is pretty much always stored as the result of another trouble code in the engine control module (ECM). Check whether the engine control module (ECM) has stored any other diagnostic trouble codes that indicate that the electronic throttle module (ETM) has had trouble fulfilling the desired throttle angle.

If other diagnostic trouble codes have been stored that indicate a communication fault on the CAN network, it indicates that ECM-903F may have been stored due to improper functioning of the CAN network.

If ECM-901A, ECM-902A, ECM-902B, ECM-911A, ECM-912A and/or ECM-E000 are stored, fault trace these diagnostic trouble codes.

If other diagnostic trouble codes have been stored that indicate a problem with the throttle unit or its throttle regulation, it indicates that the throttle unit may have had trouble fulfilling the desired throttle angle. Any diagnostic trouble codes that are stored should be fault traced first. If ECM-914F, ECM-9150, ECM-9160, ECM-9190, ECM-91A7 and/or ECM-91B7 are stored, these diagnostic trouble codes are to be fault traced first.

If other diagnostic trouble codes have been stored that indicate a dirty throttle unit, this indicates that the throttle unit may have had trouble fulfilling the desired throttle angle. Any diagnostic trouble codes that are stored should be fault traced first. If ECM-130A is stored, fault trace this diagnostic trouble code.

If ECM-903F is stored alone without any of the above diagnostic trouble codes, use the trouble code's frozen values plus the counter to determine the operating conditions when the fault was first detected and how often the fault occurred. The values show the problem's current status and how intermittent the problem is. If the diagnostic trouble code (DTC) was stored under operating conditions that means external factors, such as low battery voltage during engine start-up, are suspected to be the cause fault-trace and remedy as necessary.

If the trouble code was stored when battery voltage was low and engine speed was close to 0 RPM when the fault occurred, it could indicate that the fault arose when the vehicle was stationary with the ignition on for a long period, thereby draining the battery, or that the fault arose due to battery voltage becoming low when the customer started the engine. This, in turn, indicates that the battery's charging status is not OK. Check the battery charge status, connections to the battery and chassis and the battery cables for contact resistance and oxidation. Remedy as necessary. Otherwise, continue as follows.

The solution to the problem may be to download the upgraded software. Adjustments that have been made in the upgraded software make the system more tolerant to brief and intermittent disruptions, which previously generated diagnostic trouble code ECM-903F.

See Identifying upgraded software ECM/ETM

Erase the diagnostic trouble codes (DTCs). If the problem still can be recreated, despite above actions, try with a new throttle module unit.

Signal too high

Check whether the engine control module (ECM) has stored any other diagnostic trouble codes that indicate a problem with the electronic throttle module performing its work cycles. Fault trace these diagnostic trouble codes.

Use the diagnostic trouble codes' frozen values as well as the counters, to determine the driving conditions when the problem was detected the first time and how often the problem has occurred. The values show the problem's current status and how intermittent the problem is. If the diagnostic trouble code (DTC) was stored under operating conditions that means external factors, such as low battery voltage during engine start-up, are suspected to be the cause fault-trace and remedy as necessary.

The solution to the problem may be to download the upgraded software. The detection time in the upgraded software has been increased from 0.4 to 2.6 seconds, which makes it more tolerant to brief, intermittent disruptions.

Remedy as necessary.

Other information

See «Identifying upgraded software ECM/ETM»(ref-430993-S33059322652012011600000)
See «Information about combined diagnostic trouble codes (DTCs) (turbo engines)»(ref-430993-S02815337622012011600000)
See «Checking wiring and terminals»(ref-430909-S05889726072011101900000)
See «Fault-tracing and testing the battery»(ref-430915-S36942689642011101900000)
For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) .
For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) .
For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) .
For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .

CAUTION

In order for Electronic throttle module (ETM) to reset any reconfigurations as well as delete internally stored problems, the following must be performed: Ignition off, wait three minutes so that the main relay / system relay releases the voltage feed to, among other, Electronic throttle module (ETM). Then turn on the ignition and turn it off again. Wait another three minutes. If the electric cooling fan is running, you have to wait another two minutes after the electric cooling fan has stopped, to make sure that Electronic throttle module (ETM) has been shut off correctly. If this is not done correctly, diagnostic trouble codes may remain even after deleting diagnostic trouble codes and any reconfiguration may remain, despite the problem being fixed.

Continue Refer to «Information»(ref-430993-S41206500642011101900000)

Software is upgraded

Check whether the engine control module (ECM) has stored any other diagnostic trouble codes that indicate that the electronic throttle module (ETM) has had trouble fulfilling the desired throttle angle. If other diagnostic trouble codes have been stored that indicate a communication fault on the CAN network, it indicates that ECM-903F may have been stored due to improper functioning of the CAN network. If ECM-901A, ECM-902A, and/or ECM-E000 are stored, fault trace these diagnostic trouble codes.

Check whether the engine control module (ECM) has stored any other diagnostic trouble codes that indicate that the electronic throttle module (ETM) has had trouble regulating the throttle and fault trace these trouble codes. If ECM-914F, ECM-9150, ECM-9160, ECM-9190, ECM-91A7 and/or ECM-91B7 are stored, these diagnostic trouble codes are to be fault traced first.

If ECM-903F is stored alone without any of the above diagnostic trouble codes, try replacing the throttle unit.

Signal too high.

Check that Engine control module (ECM) and Electronic throttle module (ETM) are updated with the latest software.

Other information

See «Identifying upgraded software ECM/ETM»(ref-430993-S33059322652012011600000)
See «Information about combined diagnostic trouble codes (DTCs) (turbo engines)»(ref-430993-S02815337622012011600000)
For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) .
For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) .
For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) .
For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .

CAUTION

In order for Electronic throttle module (ETM) to reset any reconfigurations as well as delete internally stored problems, the following must be performed: Ignition off, wait three minutes so that the main relay / system relay releases the voltage feed to, among other, Electronic throttle module (ETM). Then turn on the ignition and turn it off again. Wait another three minutes. If the electric cooling fan is running, you have to wait another two minutes after the electric cooling fan has stopped, to make sure that Electronic throttle module (ETM) has been shut off correctly. If this is not done correctly, diagnostic trouble codes may remain even after deletion of diagnostic trouble codes as well as any reconfiguration, despite the problem being fixed.

Continue Refer to «Information»(ref-430993-S41206500642011101900000)

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.

The fault tracing that follows depends on whether the software in the control module is upgraded.

Ignition on.
Read out the control module's software.

Select one of the following options

The software is not upgraded. Refer to «Software is not upgraded»(ref-430993-S15690028352011101900000)
The software is upgraded. Refer to «Software is upgraded»(ref-430993-S10662427672011101900000)

If ECM-901A, ECM-902A, ECM-902B, ECM-911A, ECM-912A and/or ECM-E000 are stored, fault trace these diagnostic trouble codes.

See Identifying upgraded software ECM/ETM

Erase the diagnostic trouble codes (DTCs). If the problem still can be recreated, despite above actions, try with a new throttle module unit.

Signal too high

Remedy as necessary.

Other information

See «Identifying upgraded software ECM/ETM»(ref-430993-S33059322652012011600000)
See «Information about combined diagnostic trouble codes (DTCs) (turbo engines)»(ref-430993-S02815337622012011600000)
See «Checking wiring and terminals»(ref-430909-S05889726072011101900000)
See «Fault-tracing and testing the battery»(ref-430915-S36942689642011101900000)
For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) .
For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) .
For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) .
For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .

CAUTION

Continue Refer to «Information»(ref-430993-S05178343732011101900000)

If ECM-903F is stored alone without any of the above diagnostic trouble codes, try replacing the throttle unit.

Signal too high.

Check that Engine control module (ECM) and Electronic throttle module (ETM) are updated with the latest software.

Other information

See «Identifying upgraded software ECM/ETM»(ref-430993-S33059322652012011600000)
See «Information about combined diagnostic trouble codes (DTCs) (turbo engines)»(ref-430993-S02815337622012011600000)
For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) .
For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) .
For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) .
For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .

CAUTION

In order for Electronic throttle module (ETM) to reset any reconfigurations as well as delete internally stored problems, the following must be performed: Ignition off, wait three minutes so that the main relay / system relay releases the voltage feed to, among other, Electronic throttle module (ETM). Then turn on the ignition and turn it off again. Wait another three minutes. If the electric cooling fan is running, you have to wait another two minutes after the electric cooling fan has stopped, to make sure that Electronic throttle module (ETM) has been shut off correctly. If this is not done correctly, diagnostic trouble codes may remain even after deletion of diagnostic trouble codes as well as any reconfiguration, despite the problem being fixed.

Continue Refer to «Information»(ref-430993-S05178343732011101900000)

Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)

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

Scheme 782

Scheme 782: Removing the air cleaner (ACL)

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

Remove

the 4 x screws for the fresh air intake (1) between the front cover plate and the air cleaner (ACL). Remove the hose
the 3 x screws for the air cleaner (ACL)
the air cleaner (ACL) (2) assembly
the charge air pipe between the charge air cooler (CAC) and the electronic throttle module (ETM).

Scheme 783

Scheme 783: Removing the electronic throttle module (ETM)

Disconnect the connector for the electronic throttle module.

Remove the 4 x screws for the electronic throttle module (ETM).

Lift out the electronic throttle module (ETM). Discard the gasket.

Replacing the electronic throttle module (ETM)

CAUTION

Ensure that the surfaces between the electronic throttle module (ETM) and the intake manifold are clean.

Install a new electronic throttle module (ETM). Use a new gasket. Tighten the 4 screws.

Installing the air cleaner (ACL)

HINT: Heat the pipe at the connections to facilitate installation.

Install

the charge air pipe between the electronic throttle module (ETM) and the charge air cooler (CAC). Tighten the hose clamps
the air cleaner (ACL) (2) assembly. Tighten the screws
the fresh air intake (1) between the air cleaner (ACL) and the front cover plate. Tighten the screws. Connect the connector to the mass air flow (MAF) sensor. Tighten the hose clamp.

Finishing

After replacing the electronic throttle module (ETM), the electronic throttle module (ETM) must be adapted. See Adaptation of the throttle unit .

Start the vehicle. Check the function.

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.

The diagnostic trouble code (DTC) is an information trouble code and never occurs alone. Therefore fault-trace for another diagnostic trouble code (DTC).

See Fault-tracing information

The engine control module (ECM) previously registered a fault but has now detected that the fault is no longer present.

Continue Refer to «Information»(ref-430993-S31973080672011101900000)

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 Fault-tracing information

Programming or replacing the engine control module (ECM)

Ignition off. The engine control module (ECM) has registered an internal fault or a fault in the software. Try downloading new software into the engine control module (ECM). To download new software or replace the engine control module (ECM), see «Engine control module (ECM), replacing»(ref-430961-S10976842282011101900000) . If software cannot be downloaded or new software does not solve the problem, replace the engine control module (ECM) and download the relevant software for the new engine control module (ECM). NOTE: After downloading the software or replacing the engine control module (ECM), the throttle unit must be adapted. See «Adaptation of the throttle unit»(ref-430993-S07361583752012011600000) . Remedy as necessary.

Continue Refer to «Information»(ref-430993-S14986275502011101900000)

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.

Internal fault. Permanent fault

See Internal fault. Permanent fault

See Fault-tracing information

See Internal fault. Permanent fault

See Fault-tracing information

See Internal fault. Permanent fault

Ignition on
Read off the clutch pedal movement by carefully pressing and releasing the clutch pedal. Check that the value changes with clutch pedal movement. The value must be between 60-70 % when the clutch pedal is unaffected and 10-20 % when the pedal is fully depressed. The fault is intermittent at the moment if the values are OK.

Continue Refer to «Checking components and wiring»(ref-430993-S12461082402011101900000)

Scheme 784

Ignition off. Check the resistance of the clutch pedal sensor between terminals #2 and #4 (component side). Check the clutch pedal and engine control module (ECM) connectors. Check for contact resistance and oxidation. Check the signal cable between engine control module (ECM) terminal #B15 (#B25) and clutch pedal sensor terminal #2 (component side). Check for an open-circuit. Check the signal ground cable between engine control module (ECM) terminal #B4 (#B14) and clutch pedal sensor terminal #4 (cable harness side). Check for an open-circuit. Check the clutch pedal sensor installation. Search for damage and check the connections visually. HINT: With the ignition on, the power supply to the clutch pedal sensor must be approximately 5 V (measured with the clutch pedal sensor disconnected), measured between terminals #2 and #4 (cable harness side). Remedy as necessary. Other information: See «Connecting the breakout box»(ref-430911-S30587875092011101900000) For information about signals: For turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «Signal specification (B5204T5, B5234T3, B5234T7 and B5244T3 -2004)»(ref-430993-S39229555932012011600000) For B5254T4 2004, see «Signal specification (B5254T4 2004)»(ref-430993-S15375757242012011600000) For turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) . For resistance values: For turbocharged engines 2001, see «Component specifications»(ref-430975-S12681654262011101900000) . For turbocharged engines 2002, see «Component specifications»(ref-430975-S24294221072011101900000) . For turbocharged engines 2003-, see «Component specifications»(ref-430975-S37637200832011101900000) . For B5254T4 2004-, see «Component specifications»(ref-430975-S19541977602011101900000) . For normally aspirated engines 1999-, see «Component specifications»(ref-451848-S36406831262012020900000) . See «Checking components and wiring»(ref-430993-S12461082402011101900000) See «Checking wiring and terminals»(ref-430909-S26456997912011101900000)

Continue Refer to «Verification»(ref-430993-S07663305882011101900000)

Pedal position sensor, clutch, replacing

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

Scheme 785

Scheme 785: Removing clutch pedal position sensor

Ignition off
Remove the soundproofing panel. See «Soundproofing panel, replacing»(ref-431073-S00873319512011101900000)
Remove the two ball connectors from the master cylinder and the arm
Disconnect the connector.

Installing clutch pedal position sensor

In reverse order.

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

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on
Read off the clutch pedal movement by carefully pressing and releasing the clutch pedal. Check that the value changes with clutch pedal movement. The value must be between 60-70 % when the clutch pedal is unaffected and 10-20% when the pedal is fully depressed. The fault has been remedied if the values are OK.

Are these values OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S29943101302011101900000)

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.

CAUTION

The male and female pins on the electronic throttle unit connectors are gold plated. Great care must be taken when measuring. Damage to the gold plating can result in operating difficulties.

Continue Refer to «Checking diagnostic trouble codes (DTCs)»(ref-430993-S23645895412011101900000)

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

Ignition off
Reinstall the connectors, components etc.
Start the engine
Read off diagnostic trouble codes (DTCs). The fault has been remedied if status of the diagnostic trouble code (DTC) is intermittent.

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

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S23421703162011101900000)

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

See Signal missing or faulty signal

Ignition on
Read off the clutch pedal movement by carefully pressing and releasing the clutch pedal. Check that the value changes with clutch pedal movement. The value must be between 60-70 % when the clutch pedal is unaffected and 10-20 % when the pedal is fully depressed. The fault is intermittent at the moment if the values are OK.

Continue Refer to «Checking components and wiring»(ref-430993-S40791947582011101900000)

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

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on
Read off the clutch pedal movement by carefully pressing and releasing the clutch pedal. Check that the value changes with clutch pedal movement. The value must be between 60-70 % when the clutch pedal is unaffected and 10-20% when the pedal is fully depressed. The fault has been remedied if the values are OK.

Are these values OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S14814237942011101900000)

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

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

Signal too high / Signal too low

See Signal too high / Signal too low

The throttle unit has previously registered a fault, but has detected that the fault no longer exists.

Continue Refer to «Information»(ref-430993-S07330601362011101900000)

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).

Replacing throttle unit and programming

The throttle unit has registered an internal fault. Registration has occurred in the engine control module (ECM).

CAUTION

A new throttle unit is delivered without software. For the throttle unit to function after replacement, the throttle unit must be programmed.

For information about programming and replacing the throttle unit, see Throttle body (electronic throttle module (ETM)), replacing .

Continue Refer to «Information»(ref-430993-S26721739782011101900000)

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.

CAUTION

The male and female pins on the electronic throttle unit connectors are gold plated. Great care must be taken when measuring. Damage to the gold plating can result in operating difficulties.

Continue Refer to «Checking components and wiring»(ref-430993-S32144434242011101900000)

Adaptation of the throttle unit

HINT: Faults which caused this diagnostic trouble code (DTC) may affect the adaptation values for the throttle unit. Carry out adaptation of the throttle unit to update the adaptation values.

Note. The ignition must be switched on for at least 30 seconds after the basic conditions are met in order for the adaptation to start. It takes approximately 10 seconds to run the adaptation.

Ignition off
Reinstall the components and connectors etc.
Ignition on
Read off the parameters. Check that the following basic conditions for adaptation of the throttle unit are met. Ignition on / engine off Battery voltage above 10 V Accelerator pedal (AP) unaffected The car must be stationary (no vehicle speed signal) Engine coolant temperature (ECT) between 5-100 °C Intake air temperature (IAT) above 5 °C. Remedy as necessary. Check that the adaptation is correctly run after the "Adaptation of the throttle unit running" parameter changes status from "YES" to "NO". When all basic conditions are met, the adaptation must be completed after approximately 40 seconds. When the adaptation is completed correctly, the following information will be displayed: Adaptation of the throttle unit: OK Adaptation of the throttle unit running: NO.

Continue Refer to «Checking the fault status»(ref-430993-S42008265982011101900000)

Checking the fault status

Ignition on
Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-9117. Check that the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETED. If the fault status is "FAULT FOUND" when the diagnostic status is COMPLETED there is a fault.

Is the fault status "NO FAULT FOUND"?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Replacing the component»(ref-430993-S35362792972011101900000)

Ignition off. Try a new throttle unit: For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) . For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) . For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) . For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .

Continue Refer to «Verification»(ref-430993-S11025886772011101900000)

Throttle body (TB), cleaning (2005- B5244T5)

Operation Number(s): 25121

Note. Removal steps in this procedure may contain installation details.

Remove the throttle body

For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) .
For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) .
For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) .
For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .

Scheme 786

Clean the throttle body with a brush.

Use: Cleaner, 1161826

Ensure that all deposits are removed from the marked surfaces.

Scheme 787

Carefully wipe clean the air duct on both sides of the throttle disc. Also wipe clean the edge of the throttle disc.

Install the throttle body

For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) .
For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) .
For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) .
For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .

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

Ignition off
Reinstall the connectors, components etc.
Ignition on
Read off the parameters. Check that the following basic conditions for adaptation of the throttle unit are met. Ignition on / engine off Battery voltage above 10 V Accelerator pedal (AP) unaffected The car must be stationary (no vehicle speed signal) Engine coolant temperature (ECT) between 5-100 °C Intake air temperature (IAT) above 5 °C. Remedy as necessary. Check that the adaptation is correctly run after the "Adaptation of the throttle unit running" parameter changes status from "YES" to "NO". When all basic conditions are met, the adaptation must be completed after approximately 40 seconds. When the adaptation is completed correctly, the following information will be displayed: Adaptation of the throttle unit: OK Adaptation of the throttle unit running: NO.

Continue Refer to «Verification, continued»(ref-430993-S40474258312011101900000)

Verification, continued

Ignition on
Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-9117. Check that the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETED. If the fault status is "FAULT FOUND" when the diagnostic status is COMPLETED there fault is still present.

Is the fault status "NO FAULT FOUND"?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S09558235302011101900000)

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

See Too high signal/signal missing/too low signal.

CAUTION

The male and female pins on the electronic throttle unit connectors are gold plated. Great care must be taken when measuring. Damage to the gold plating can result in operating difficulties.

Continue Refer to «Checking diagnostic trouble codes (DTCs)»(ref-430993-S35243286352011101900000)

Note. The ignition must be switched on for at least 30 seconds after the basic conditions are met in order for the adaptation to start. It takes approximately 10 seconds to run the adaptation.

Ignition off
Ignition on
Read off the parameters. Check that the following basic conditions for adaptation of the throttle unit are met. Ignition on / engine off Battery voltage above 10 V Accelerator pedal (AP) unaffected The car must be stationary (no vehicle speed signal) Engine coolant temperature (ECT) between 5-100 °C Intake air temperature (IAT) above 5 °C. Remedy as necessary. Check that the adaptation is correctly run after the "Adaptation of the throttle unit running" parameter changes status from "YES" to "NO". When all basic conditions are met, the adaptation must be completed after approximately 40 seconds. When the adaptation is completed correctly, the following information will be displayed: Adaptation of the throttle unit: OK Adaptation of the throttle unit running: NO. The fault is intermittent at the moment if the adaptation has been completed correctly.

Continue Refer to «Checking the connectors and components»(ref-430993-S14338502482011101900000)

Ignition off. Check the throttle unit and engine control module (ECM) connectors. Check for contact resistance and oxidation. Check the resistance values of the potentiometers in the throttle unit. Check that the shutter in the throttle unit is not blocked or sticking. Clean as necessary. Remedy as necessary. Other information: See «Checking wiring and terminals»(ref-430909-S26456997912011101900000) For resistance values: For turbocharged engines 2001, see «Component specifications»(ref-430975-S12681654262011101900000) . For turbocharged engines 2002, see «Component specifications»(ref-430975-S24294221072011101900000) . For turbocharged engines 2003-, see «Component specifications»(ref-430975-S37637200832011101900000) . For B5254T4 2004-, see «Component specifications»(ref-430975-S19541977602011101900000) . For normally aspirated engines 1999-, see «Component specifications»(ref-451848-S36406831262012020900000) . For information about signals: For turbocharged engines -2001, see «Signal specification»(ref-430975-S34273110602011101900000) For turbocharged engines 2002, see «Signal specification»(ref-430975-S11230688812011101900000) For B5254T2 -2004, see «Signal description»(ref-430975-S13000059482011101900000) For B5204T5, B5234T3, B5234T7 and B5244T3 -2004, see «Signal specification (B5204T5, B5234T3, B5234T7 and B5244T3 -2004)»(ref-430993-S39229555932012011600000) For B5254T4 2004, see «Signal specification (B5254T4 2004)»(ref-430993-S15375757242012011600000) For turbocharged engines 2005-, see «Signal specification»(ref-430975-S24350024032011101900000) . To access or replace the throttle unit: For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) . For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) . For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) . For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) . To clean the throttle unit: For -2004, see «Throttle body, cleaning»(ref-430964-S10707071812011101900000) For 2005- B5xx4T, does not apply to B5244T5, see «Throttle body (TB), cleaning»(ref-430964-S09703773472011101900000) For 2005- B5244T5, see «Throttle body (TB), cleaning (2005- B5244T5)»(ref-430993-S05048123262012011600000) .

Continue Refer to «Verification»(ref-430993-S26842068072011101900000)

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

Note. The ignition must be switched on for at least 30 seconds after the basic conditions are met in order for the adaptation to start. It takes approximately 10 seconds to run the adaptation.

Ignition off
Reinstall the connectors, components etc.
Ignition on
Read off the parameters. Check that the following basic conditions for adaptation of the throttle unit are met. Ignition on / engine off Battery voltage above 10 V Accelerator pedal (AP) unaffected The car must be stationary (no vehicle speed signal) Engine coolant temperature (ECT) between 5-100 °C Intake air temperature (IAT) above 5 °C. Remedy as necessary. Check that the adaptation is correctly run after the "Adaptation of the throttle unit running" parameter changes status from "YES" to "NO". When all basic conditions are met, the adaptation must be completed after approximately 40 seconds. When the adaptation is completed correctly, the following information will be displayed: Adaptation of the throttle unit: OK Adaptation of the throttle unit running: NO. The fault has been remedied if the adaptation has been completed correctly.

Is the adaptation OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S34111910662011101900000)

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

Checking components

If one or several of the diagnostic trouble codes (DTCs), ECM-900E, ECM-901A, ECM-901E, ECM-902A, ECM-902B, ECM-910E, ECM-911A, ECM-912A, ECM-E000 and/or ECM-E003 are stored together with ECM-913F, continue fault-tracing according to one of these diagnostic trouble codes (DTCs). Otherwise, continue as follows.

Check, using the identification of the upgraded software Engine control module (ECM)/Electronic throttle module (ETM) that the correct software is in the Electronic throttle module (ETM) and the Engine control module (ECM). The diagnostic trouble code (DTC) is stored if software that is not compatible is mixed. This can, for example, occur if the software in the Electronic throttle module (ETM) is older than the upgraded software in the Engine control module (ECM) or if a throttle unit, which is designed for a 5-cylinder turbocharged engine, is installed on a 5-cylinder non-turbocharged engine.

Remedy as necessary.

Other information

See «Checking wiring and terminals»(ref-430909-S05889726072011101900000)
See «Identifying upgraded software ECM/ETM»(ref-430993-S33059322652012011600000)

CAUTION

In order for Electronic throttle module (ETM) to reset any reconfigurations as well as delete internally stored problems, the following must be performed

Ignition off, wait three minutes so that the main relay / system relay releases the voltage feed to, among other, Electronic throttle module (ETM).
Then turn on the ignition and turn it off again.
Wait another three minutes. If the electric cooling fan is running, you have to wait another two minutes after the electric cooling fan has stopped, to make sure that Electronic throttle module (ETM) has been shut off correctly.

If this is not done correctly, diagnostic trouble codes may remain even after deleting diagnostic trouble codes and any reconfiguration may remain, despite the problem being fixed.

Continue Refer to «Information»(ref-430993-S27761358772011101900000)

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

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

See Faulty signal

Check whether the engine control module (ECM) has stored any diagnostic trouble codes that indicate a fault in the throttle position sensor of the throttle unit. If diagnostic trouble code ECM-9150 and/or ECM-9160 are stored, they are to be fault traced first. Otherwise, continue as follows.

Download the upgraded software. This software contains several improvements geared toward the throttle unit's throttle position sensor, including improvement of the tolerances for short-term, intermittent disruptions to the throttle position sensor signals. The greatest improvement is that the software can handle a substantially greater difference between throttle position sensors' signals than the previous software.

Perform test of throttle module's damper position sensor. Click on the VCT2000 symbol to start the test. NOTE: Certain types of malfunctions of the electronic throttle module (ETM), related to the two internal throttle position sensors, may be temperature-dependent. To be sure of the result, the test should be repeated a number of times in the temperature range between cold engine (ambient temperature) and warm engine (warm engine compartment, engine and induction system).

If the test indicates that the throttle position sensors are not OK, try a new throttle unit (ETM).

Other information

For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) .
For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) .
For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) .
For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .
See «Identifying upgraded software ECM/ETM»(ref-430993-S33059322652012011600000)
See «Checking wiring and terminals»(ref-430909-S05889726072011101900000)

CAUTION

In order for Electronic throttle module (ETM) to reset any reconfigurations as well as delete internally stored problems, the following must be performed

Ignition off, wait three minutes so that the main relay / system relay releases the voltage feed to, among other, Electronic throttle module (ETM).
Then turn on the ignition and turn it off again.
Wait another three minutes. If the electric cooling fan is running, you have to wait another two minutes after the electric cooling fan has stopped, to make sure that Electronic throttle module (ETM) has been shut off correctly. If this is not done correctly, diagnostic trouble codes may remain even after deleting diagnostic trouble codes and any reconfiguration may remain, despite the problem being fixed.

Continue Refer to «Information»(ref-430993-S26688341432011101900000)

For upgraded software, released during year 2006 or later, this diagnostic trouble code is used as an information diagnostic trouble code. It will be stored in case the replacement value throttle shut off is or has been activated. It is always stored as the result of another trouble code, troubleshooting is not required.

CAUTION

There are individual cases when diagnostic trouble code (DTC) ECM-914F can be the only code stored in the Engine control module (ECM). If the upgraded software, released in 2006 or later, is downloaded and only diagnostic trouble code (DTC) ECM-914F is stored in the Engine control module (ECM), try replacing the throttle unit.

Other information

See «Identifying upgraded software ECM/ETM»(ref-430993-S33059322652012011600000)
For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) .
For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) .
For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) .
For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .

CAUTION

In order for Electronic throttle module (ETM) to reset any reconfigurations as well as delete internally stored problems, the following must be performed: Ignition off, wait three minutes so that the main relay / system relay releases the voltage feed to, among other, Electronic throttle module (ETM). Then turn on the ignition and turn it off again. Wait another three minutes. If the electric cooling fan is running, you have to wait another two minutes after the electric cooling fan has stopped, to make sure that Electronic throttle module (ETM) has been shut off correctly. If this is not done correctly, diagnostic trouble codes may remain even after deletion of diagnostic trouble codes as well as any reconfiguration, despite the problem being fixed.

Continue Refer to «Information»(ref-430993-S26688341432011101900000)

The fault tracing that follows depends on whether the software in the control module is upgraded.

Ignition on.
Read out the control module's software.

Select one of the following options

The software is not upgraded. Refer to «software is not upgraded»(ref-430993-S00729948012011101900000)
The software is upgraded. Refer to «software is upgraded»(ref-430993-S28769075542011101900000)

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

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

See Faulty signal

The fault tracing that follows depends on whether the software in the control module is upgraded. The control module's software version can be read out using VIDA vehicle communication.

Ignition on.
Read out the control module's software.

Select one of the following options

The software is not upgraded. Refer to «software is not upgraded»(ref-430993-S02766656152011101900000)
The software is upgraded. Refer to «software is upgraded»(ref-430993-S01259260222011101900000)

Check the battery charge status, connections to the battery and chassis and the battery cables for contact resistance and oxidation. Remedy as necessary. Otherwise, continue as follows.

Perform test of throttle module's damper position sensor. Click on the VCT2000 symbol to start the test. NOTE: Certain types of malfunctions of the electronic throttle module (ETM), related to the two internal throttle position sensors, may be temperature-dependent. To be sure of the result, the test should be repeated a number of times in the temperature range between cold engine (ambient temperature) and warm engine (warm engine compartment, engine and induction system).

If the test indicates that the throttle position sensors are not OK, try a new throttle unit (ETM).

Other information

See «Identifying upgraded software ECM/ETM»(ref-430993-S33059322652012011600000)
For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) .
For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) .
For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) .
For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .
See «Checking wiring and terminals»(ref-430909-S05889726072011101900000)

CAUTION

Continue Refer to «Information»(ref-430993-S12423634822011101900000)

Check the battery charge status, connections to the battery and chassis and the battery cables for contact resistance and oxidation. Remedy as necessary. Otherwise, continue as follows.

If the trouble code recurs despite the checks/measures specified above, try replacing the throttle unit (ETM).

Other information

See «Identifying upgraded software ECM/ETM»(ref-430993-S33059322652012011600000)
See «Checking wiring and terminals»(ref-430909-S05889726072011101900000)
For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) .
For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) .
For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) .
For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .

CAUTION

Continue Refer to «Information»(ref-430993-S12423634822011101900000)

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.

CAUTION

The male and female pins on the electronic throttle unit connectors are gold plated. Great care must be taken when measuring. Damage to the gold plating can result in operating difficulties.

Continue Refer to «Checking components and wiring»(ref-430993-S07244101102011101900000)

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

Ignition off
Reinstall the connectors, components etc.
Start the engine
Read off diagnostic trouble codes (DTCs). The fault has been remedied if status of the diagnostic trouble code (DTC) is intermittent.

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

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S15782257132011101900000)

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

CAUTION

The male and female pins on the electronic throttle unit connectors are gold plated. Great care must be taken when measuring. Damage to the gold plating can result in operating difficulties.

Continue Refer to «Checking components and wiring»(ref-430993-S39713056852011101900000)

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

Ignition off
Reinstall the connectors, components etc.
Start the engine
Read off diagnostic trouble codes (DTCs). The fault has been remedied if status of the diagnostic trouble code (DTC) is intermittent.

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

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S12875532652011101900000)

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

CAUTION

The male and female pins on the electronic throttle unit connectors are gold plated. Great care must be taken when measuring. Damage to the gold plating can result in operating difficulties.

Continue Refer to «Checking components and wiring»(ref-430993-S41194065152011101900000)

Note. The ignition must be switched on for at least 30 seconds after the basic conditions are met in order for the adaptation to start. It takes approximately 10 seconds to run the adaptation.

Ignition off
Reinstall the connectors, components etc.
Ignition on
Read off the parameters. Check that the following basic conditions for adaptation of the throttle unit are met. Ignition on / engine off Battery voltage above 10 V Accelerator pedal (AP) unaffected The car must be stationary (no vehicle speed signal) Engine coolant temperature (ECT) between 5-100 °C Intake air temperature (IAT) above 5 °C. Remedy as necessary. Check that the adaptation is correctly run after the "Adaptation of the throttle unit running" parameter changes status from "YES" to "NO". When all basic conditions are met, the adaptation must be completed after approximately 40 seconds. When the adaptation is completed correctly, the following information will be displayed: Adaptation of the throttle unit: OK Adaptation of the throttle unit running: NO.

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

Ignition off
Reinstall the connectors, components etc.
Start the engine
Read off diagnostic trouble codes (DTCs). The fault has been remedied if status of the diagnostic trouble code (DTC) is intermittent.

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

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-430993-S32737897602011101900000)

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

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.

The fault tracing that follows depends on whether the software in the control module is upgraded. The control module's software version can be read out using VIDA vehicle communication.

Ignition on.
Read out the control module's software.

Select one of the following options

The software is not upgraded. Refer to «software is not upgraded»(ref-430993-S24541320322011101900000)
The software is upgraded. Refer to «software is upgraded»(ref-430993-S04111781832011101900000)

Check the battery charge status, connections to the battery and chassis and the battery cables for contact resistance and oxidation. Remedy as necessary. Otherwise, continue as follows.

Perform test of throttle module's damper position sensor. Click on the VCT2000 symbol to start the test. NOTE: Certain types of malfunctions of the electronic throttle module (ETM), related to the two internal throttle position sensors, may be temperature-dependent. To be sure of the result, the test should be repeated a number of times in the temperature range between cold engine (ambient temperature) and warm engine (warm engine compartment, engine and induction system).

If the test indicates that the throttle position sensors are not OK, try a new throttle unit (ETM).

Other information

See «Identifying upgraded software ECM/ETM»(ref-430993-S33059322652012011600000)
For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) .
For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) .
For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) .
For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .
See «Checking wiring and terminals»(ref-430909-S05889726072011101900000)

CAUTION

Continue Refer to «Information»(ref-430993-S33079094282011101900000)

Check the battery charge status, connections to the battery and chassis and the battery cables for contact resistance and oxidation. Remedy as necessary. Otherwise, continue as follows.

If the trouble code recurs despite the checks/measures specified above, try replacing the throttle unit (ETM).

Other information

See «Identifying upgraded software ECM/ETM»(ref-430993-S33059322652012011600000)
See «Checking wiring and terminals»(ref-430909-S05889726072011101900000)
For B5xx4T -2001, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S23357003322011101900000) .
For B5xx4T 2002-2004, see «Replacing the throttle body (TB)»(ref-430985-S29652099132011101900000) .
For B5xx4T 2005-, B5244T5 and B5254T4 do not apply, see «Throttle body (electronic throttle module (ETM)), replacing»(ref-430985-S35865188232011101900000) .
For B5254T4 and B5244T5 2004-, see «Throttle body (electronic throttle module (ETM)), replacing (B5254T4 and B5244T5 2004-)»(ref-430993-S23494846432012011600000) .

CAUTION

Continue Refer to «Information»(ref-430993-S33079094282011101900000)