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Contents Section: Testing & Diagnostics All sections

Engine Control Module (ECM) Diagnostic Trouble Codes - 9 of 9: Other Volvo V50 I рестайлинг

Testing & Diagnostics 6 illustrations ~9303 words

VERIFICATION

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

Scheme 230

Scheme 230
Scheme 230

Scheme 231

Scheme 231
Scheme 231
  1. Ignition off.
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on. Activate the read off for the signals for the brake pedal position sensor and stop lamp switch. Check that the value for brake position sensor at unaffected brake pedal is approx. 7% and when the pedal is fully pressed down approx. 80% when the engine is running. Also check that the brake light switch changes status. The status must be OFF with the brake pedal unaffected and change to ON when the brake pedal is pressed. If values and status from the brake position sensor and brake light switch do not match acc. to the above, this indicates incorrect function.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S32025165752012042500000)

FAULT-TRACING INFORMATION

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

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

No fault-tracing has been developed for this diagnostic trouble code (DTC). The diagnostic trouble code (DTC) for this fault is first stored in the Central electronic module (CEM), then in the Engine control module (ECM). This diagnostic trouble code (DTC) can not be erased before the diagnostic trouble codes (DTC) in the central electronic module (CEM) has been remedied and erased.

Therefore, first read off diagnostic trouble codes in Central electronic module (CEM), perform troubleshooting and perform actions as needed. This diagnostic trouble code (DTC) can then be erased.

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

CHECKING THE SYSTEM

At high and irregular idle rpm

  1. Check the intake system for leaks and damage.

At low and irregular idle rpm

  1. Check the intake and exhaust system. Check for blockages.

Remedy as necessary.

Other information

  1. see «AIR LEAKAGE EXHAUST SYSTEM, CHECK»(ref-479169-S27670670192012061200000)
  2. see «AIR LEAKS IN THE INTAKE SYSTEM, CHECKING»(ref-479169-S42610968362012061200000)
  1. Continue Refer to «INFORMATION»(ref-466673-S42761496362012042500000)

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.

FAULT-TRACING

See FAULT-TRACING

see FAULT-TRACING INFORMATION

Check and remedy any diagnostic trouble codes (DTCs) in the central electronic module (CEM) before fault-tracing this diagnostic trouble code (DTC).

Note. The analog accelerator pedal (AP) position sensor signal is transmitted from the central electronic module (CEM) via CAN communication to the engine control module (ECM).

Remedy as necessary.

  1. Continue Refer to «CHECKING THE STATUS»(ref-466673-S27444917812012042500000)

CHECKING THE STATUS

  1. Ignition on
  2. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the values for the PWM signal and the analog signal change with accelerator pedal movement. The values must follow each other and be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the values are within this range and follow each other with the pedal movement. The fault is intermittent at the moment if the function is OK.
  1. Continue Refer to «CHECKING THE POWER SUPPLY»(ref-466673-S17483839752012042500000)

Scheme 232

Scheme 232
Scheme 232
  1. Ignition on. Check the power supply (12 V) to the accelerator pedal (AP) position sensor between accelerator pedal (AP) position sensor terminals #4 (wiring side) and #6 (wiring side). Check that the power supply is approximately 12 V with the ignition on. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Is the power supply OK?

  1. YES Refer to «CHECKING THE CONNECTORS AND CABLES»(ref-466673-S01171414132012042500000)
  2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466673-S38476254342012042500000)

CHECKING THE CONNECTORS AND CABLES

  1. Ignition off. Check the signal cable between engine control module (ECM) terminal #B26 (#C26) and accelerator pedal (AP) position sensor terminal #5 (wiring side). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Try a new accelerator pedal (AP) position sensor if no fault is found and the fault is permanent. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
  1. Continue Refer to «VERIFICATION»(ref-466673-S42105270142012042500000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the values for the PWM signal and the analog signal change with accelerator pedal movement. The values must follow each other and be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the values are within this range and follow each other with the pedal movement. The fault has been remedied if the function is OK.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S27009695292012042500000)

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 and remedy any diagnostic trouble codes (DTCs) in the central electronic module (CEM) before fault-tracing this diagnostic trouble code (DTC).

Note. The analog accelerator pedal (AP) position sensor signal is transmitted from the central electronic module (CEM) via CAN communication to the engine control module (ECM).

Remedy as necessary.

  1. Continue Refer to «CHECKING THE STATUS»(ref-466673-S17213560872012042500000)
  1. Ignition on
  2. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the values for the PWM signal and the analog signal change with accelerator pedal movement. The values must follow each other and be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the values are within this range and follow each other with the pedal movement. The fault is intermittent at the moment if the function is OK.
  1. Continue Refer to «CHECKING THE POWER SUPPLY»(ref-466673-S36493351712012042500000)

CHECKING THE POWER SUPPLY

  1. Ignition on. Check the power supply (12 V) to the accelerator pedal (AP) position sensor between accelerator pedal (AP) position sensor terminals #4 (wiring side) and #6 (wiring side). Check that the power supply is approximately 12 V with the ignition on. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Is the power supply OK?

  1. YES Refer to «CHECKING THE CONNECTORS AND CABLES»(ref-466673-S17416113262012042500000)
  2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466673-S22473224432012042500000)
  1. Ignition off. Check the signal cable between engine control module (ECM) terminal #B26 (#C26) and accelerator pedal (AP) position sensor terminal #5 (wiring side). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Try a new accelerator pedal (AP) position sensor if no fault is found and the fault is permanent. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
  1. Continue Refer to «VERIFICATION»(ref-466673-S12773131632012042500000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the values for the PWM signal and the analog signal change with accelerator pedal movement. The values must follow each other and be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the values are within this range and follow each other with the pedal movement. The fault has been remedied if the function is OK.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S05289713072012042500000)

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

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

  1. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the value for the PWM signal changes with accelerator pedal movement. The value must be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the value is within this range and follows the pedal movement. The fault is intermittent at the moment if the values are OK.
  1. Continue Refer to «CHECKING THE POWER SUPPLY»(ref-466673-S14589428532012042500000)
  1. Ignition on. Check the power supply (12 V) to the accelerator pedal (AP) position sensor between accelerator pedal (AP) position sensor terminals #4 (wiring side) and #6 (wiring side). Check that the power supply is approximately 12 V with the ignition on. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Is the power supply OK?

  1. YES Refer to «CHECKING THE CONNECTORS AND CABLES»(ref-466673-S28639913672012042500000)
  2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466673-S22060331162012042500000)
  1. Ignition off
  2. Check the accelerator pedal (AP) position sensor connector. Check for contact resistance and oxidation. Check the signal cable between engine control module (ECM) terminal #B26 (#C26) and accelerator pedal (AP) position sensor terminal #5 (wiring side). Check for an open-circuit. Check for loose connections. Check for contact resistance. Check for oxidation. Try a new accelerator pedal (AP) position sensor if no fault is found and the fault is permanent. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
  1. Continue Refer to «VERIFICATION»(ref-466673-S40858619322012042500000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the value for the PWM signal changes with accelerator pedal movement. The value must be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the value is within this range and follows the pedal movement. The fault has been remedied if the values are OK.

Are these values OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S41098765502012042500000)

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

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

  1. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the value for the PWM signal changes with accelerator pedal movement. The value must be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the value is within this range and follows the pedal movement. The fault is intermittent at the moment if the values are OK.
  1. Continue Refer to «CHECKING THE POWER SUPPLY»(ref-466673-S05655854772012042500000)
  1. Ignition on. Check the power supply (12 V) to the accelerator pedal (AP) position sensor between accelerator pedal (AP) position sensor terminals #4 (wiring side) and #6 (wiring side). Check that the power supply is approximately 12 V with the ignition on. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Is the power supply OK?

  1. YES Refer to «CHECKING THE CONNECTORS AND CABLES»(ref-466673-S41619760382012042500000)
  2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466673-S06779313932012042500000)
  1. Ignition off
  2. Check the accelerator pedal (AP) position sensor connector. Check for contact resistance and oxidation. Check the signal cable between engine control module (ECM) terminal #B26 (#C26) and accelerator pedal (AP) position sensor terminal #5 (wiring side). Check for an open-circuit. Check for loose connections. Check for contact resistance. Check for oxidation. Try a new accelerator pedal (AP) position sensor if no fault is found and the fault is permanent. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
  1. Continue Refer to «VERIFICATION»(ref-466673-S01664918072012042500000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the value for the PWM signal changes with accelerator pedal movement. The value must be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the value is within this range and follows the pedal movement. The fault has been remedied if the values are OK.

Are these values OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S28748398402012042500000)

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

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

  1. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the value for the PWM signal changes with accelerator pedal movement. The value must be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the value is within this range and follows the pedal movement. The fault is intermittent at the moment if the values are OK.
  1. Continue Refer to «CHECKING THE POWER SUPPLY»(ref-466673-S16538008772012042500000)
  1. Ignition on. Check the power supply (12 V) to the accelerator pedal (AP) position sensor between accelerator pedal (AP) position sensor terminals #4 (wiring side) and #6 (wiring side). Check that the power supply is approximately 12 V with the ignition on. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Is the power supply OK?

  1. YES Refer to «CHECKING THE CONNECTORS AND CABLES»(ref-466673-S34571254932012042500000)
  2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466673-S17532067762012042500000)
  1. Ignition off. Check the signal cable between engine control module (ECM) terminal #B26 (#C26) and accelerator pedal (AP) position sensor terminal #5 (wiring side). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Try a new accelerator pedal (AP) position sensor if no fault is found and the fault is permanent. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
  1. Continue Refer to «VERIFICATION»(ref-466673-S07690096582012042500000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the value for the PWM signal changes with accelerator pedal movement. The value must be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the value is within this range and follows the pedal movement. The fault has been remedied if the values are OK.

Are these values OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S27769473842012042500000)

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

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

  1. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the value for the PWM signal changes with accelerator pedal movement. The value must be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the value is within this range and follows the pedal movement. The fault is intermittent at the moment if the values are OK.
  1. Continue Refer to «CHECKING THE POWER SUPPLY»(ref-466673-S24537732302012042500000)
  1. Ignition on. Check the power supply (12 V) to the accelerator pedal (AP) position sensor between accelerator pedal (AP) position sensor terminals #4 (wiring side) and #6 (wiring side). Check that the power supply is approximately 12 V with the ignition on. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Is the power supply OK?

  1. YES Refer to «CHECKING THE CONNECTORS AND CABLES»(ref-466673-S15957798882012042500000)
  2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466673-S30038161502012042500000)
  1. Ignition off. Check the signal cable between engine control module (ECM) terminal #B26 (#C26) and accelerator pedal (AP) position sensor terminal #5 (wiring side). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Try a new accelerator pedal (AP) position sensor if no fault is found and the fault is permanent. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
  1. Continue Refer to «VERIFICATION»(ref-466673-S12574731422012042500000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the value for the PWM signal changes with accelerator pedal movement. The value must be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the value is within this range and follows the pedal movement. The fault has been remedied if the values are OK.

Are these values OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S24004708472012042500000)

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

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

  1. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the value for the PWM signal changes with accelerator pedal movement. The value must be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the value is within this range and follows the pedal movement. The fault is intermittent at the moment if the values are OK.
  1. Continue Refer to «CHECKING THE POWER SUPPLY»(ref-466673-S32476002942012042500000)
  1. Ignition on. Check the power supply (12 V) to the accelerator pedal (AP) position sensor between accelerator pedal (AP) position sensor terminals #4 (wiring side) and #6 (wiring side). Check that the power supply is approximately 12 V with the ignition on. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Is the power supply OK?

  1. YES Refer to «CHECKING THE CONNECTORS AND CABLES»(ref-466673-S37065914182012042500000)
  2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466673-S41123530902012042500000)
  1. Ignition off. Check the signal cable between engine control module (ECM) terminal #B26 (#C26) and accelerator pedal (AP) position sensor terminal #5 (wiring side). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Try a new accelerator pedal (AP) position sensor if no fault is found and the fault is permanent. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
  1. Continue Refer to «VERIFICATION»(ref-466673-S08295623232012042500000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the value for the PWM signal changes with accelerator pedal movement. The value must be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the value is within this range and follows the pedal movement. The fault has been remedied if the values are OK.

Are these values OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S14016048172012042500000)

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

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

  1. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the value for the PWM signal changes with accelerator pedal movement. The value must be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the value is within this range and follows the pedal movement. The fault is intermittent at the moment if the values are OK.
  1. Continue Refer to «CHECKING THE POWER SUPPLY»(ref-466673-S23768485402012042500000)
  1. Ignition on. Check the power supply (12 V) to the accelerator pedal (AP) position sensor between accelerator pedal (AP) position sensor terminals #4 (wiring side) and #6 (wiring side). Check that the power supply is approximately 12 V with the ignition on. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Is the power supply OK?

  1. YES Refer to «CHECKING THE CONNECTORS AND CABLES»(ref-466673-S13270400582012042500000)
  2. NO Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466673-S29156451552012042500000)
  1. Ignition off. Check the signal cable between engine control module (ECM) terminal #B26 (#C26) and accelerator pedal (AP) position sensor terminal #5 (wiring side). Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Try a new accelerator pedal (AP) position sensor if no fault is found and the fault is permanent. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
  1. Continue Refer to «VERIFICATION»(ref-466673-S12912722922012042500000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on. Read off the movement of the accelerator pedal by carefully depressing and releasing the accelerator pedal (AP). Check that the value for the PWM signal changes with accelerator pedal movement. The value must be between 5 % (released pedal) and a maximum of 90 % (fully depressed pedal). The function is OK if the value is within this range and follows the pedal movement. The fault has been remedied if the values are OK.

Are these values OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S30263702712012042500000)

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

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

See FAULT-TRACING

See FAULT-TRACING

See FAULT-TRACING

See FAULT-TRACING

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

See FAULT-TRACING

See FAULT-TRACING

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

The engine control module (ECM) receives a signal on gear selector position from the transmission control module (TCM) via the CAN network. The diagnostic trouble code is generated when the signal has not been updated correctly.

This could be due to a fault in the transmission control module (TCM) or intermittent faults in the CAN network.

Check and remedy any diagnostic trouble codes in the transmission control module (TCM).

Check the diagnostic trouble codes in the central electronic module (CEM) for CAN network faults.

Select "Continue" to exit.

  1. Continue INFO GIVEN

The engine control module (ECM) receives a signal from the transmission control module (TCM) via the CAN network. The diagnostic trouble code is generated when the signal on gear selector position has a reliability that is too low (quality factor too low).

This could be due to a fault in the transmission control module (TCM) or intermittent faults in the CAN network.

Check and remedy any diagnostic trouble codes in the transmission control module (TCM).

Check the diagnostic trouble codes in the central electronic module (CEM) for CAN network faults.

CHECKING THE FUNCTION

Start the readout to check that status of the signal coming from the transmission control module (TCM).

Move the gear selector to any position other than P or N. Check that the status of the signal indicates that the gear selector is not in position P or N.

Check the cable between the transmission control module (TCM) and the engine control module (ECM). Check for a short-circuit to supply voltage. Check the signal cable for loose connection, contact resistance and oxidation.

Also check the intermediate connectors. Check for contact resistance and oxidation

Remedy as necessary.

  1. Continue Refer to «VERIFICATION»(ref-466673-S11802378672012042500000)

Scheme 233

Scheme 233: VERIFICATION
Scheme 233: VERIFICATION
  1. Turn off the ignition.
  2. Reinstall the connectors, components etc. Check whether the fault has been remedied by switching on the ignition and attempting to start the engine. Release the ignition key/start knob from position III as soon as the starter motor has started to crank. The autostart function should drive the starter motor until the engine starts.

Has the fault been remedied?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S18444105732012042500000)

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

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

  1. Ignition off
  2. Check the accelerator pedal position sensor and engine control module (ECM) connectors. Check for contact resistance and oxidation. Check the signal cable between engine control module (ECM) terminal #B26 (#C26) and accelerator pedal (AP) position sensor terminal #5 (cable harness side). Check for an open-circuit. Check for a short-circuit to supply voltage. Check for a short-circuit to ground. HINT: With the ignition on, the power supply to the accelerator pedal (AP) position sensor must be approximately 12 V measured between accelerator pedal (AP) position sensor terminals #4 and #6 (cable harness side). Try a new accelerator pedal (AP) position sensor if no fault is found and the fault is permanent. Remedy as necessary. Other information: see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CONTENTS»(ref-466589-S05251896242012042500000)
  1. Continue Refer to «VERIFICATION»(ref-466673-S34769028882012042500000)

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

Scheme 234

Scheme 234: VERIFICATION
Scheme 234: VERIFICATION
  1. Ignition off
  2. Reinstall the connectors, components etc.
  3. Start the engine. Read off diagnostic trouble codes (DTCs). If the status of the diagnostic trouble code (DTC) is intermittent the fault has been remedied.

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

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S05732919772012042500000)

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 FAULTY SIGNAL OR SIGNAL MISSING

See FAULTY SIGNAL OR SIGNAL MISSING

  1. Ignition off
  2. Check the accelerator pedal position sensor and engine control module (ECM) connectors. Check for contact resistance and oxidation. Check the signal cable between engine control module (ECM) terminal #B26 (#C26) and accelerator pedal (AP) position sensor terminal #5 (cable harness side). Check for an open-circuit. Check for a short-circuit to supply voltage. Check for a short-circuit to ground. HINT: With the ignition on, the power supply to the accelerator pedal (AP) position sensor must be approximately 12 V measured between accelerator pedal (AP) position sensor terminals #4 and #6 (cable harness side). Try a new accelerator pedal (AP) position sensor if no fault is found and the fault is permanent. Remedy as necessary. Other information: see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) see «ACCELERATOR PEDAL»(ref-466672-S34630835312012042500000) see «CONTENTS»(ref-466589-S05251896242012042500000)
  1. Continue Refer to «VERIFICATION»(ref-466673-S04991791912012042500000)

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

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

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

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S18427655892012042500000)

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

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

SIGNAL TOO HIGH / SIGNAL TOO LOW

See SIGNAL TOO HIGH / SIGNAL TOO LOW

See SIGNAL TOO HIGH / SIGNAL TOO LOW

See SIGNAL TOO HIGH / SIGNAL TOO LOW

CHECKING THE INTAKE SYSTEM

Check the induction system for air leaks.

Check the hose connectors on the intake manifold for damage and leakage.

Remedy as necessary.

Other information

  1. see «AIR LEAKS IN THE INTAKE SYSTEM, CHECKING»(ref-479169-S42610968362012061200000)
  1. Continue Refer to «REPLACING THE COMPONENT»(ref-466673-S14551331772012042500000)

REPLACING THE COMPONENT

Note. The diagnostic trouble code (DTC) may be stored as a consequence of other faults. Check therefore if any other diagnostic trouble codes (DTCs) are stored for the engine control module (ECM). Remedy these first.

The engine control module (ECM) has registered an internal fault.

If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults can be caused by interference at start up of the engine control module (ECM) or may be a different type of fault which occurs on different occasions. The fault is evaluated depending on how it occurs.

Other information

  1. see «ENGINE CONTROL MODULE (ECM)»(ref-466594-S40317974462012042500000)

Remedy as necessary.

  1. Continue Refer to «INFORMATION»(ref-466673-S13434333052012042500000)

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

See INTERNAL FAULT

The engine control module (ECM) has registered an internal fault.

If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults can be caused by interference at start up of the engine control module (ECM) or may be a different type of fault which occurs on different occasions. The fault is evaluated depending on how it occurs. Replace the engine control module (ECM) if the fault recurs.

Replace the engine control module (ECM) in the event of a permanent fault.

see ENGINE CONTROL MODULE (ECM)

Remedy as necessary.

  1. Continue Refer to «INFORMATION»(ref-466673-S22465602292012052400000)

INFORMATION

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

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

see INTERNAL FAULT

Scheme 235

Scheme 235
Scheme 235
  1. Ignition on. The diagnostic trouble code has been stored due to Engine control module (ECM) has registered that it has not been possible to close the throttle and thus the vehicle's brake vacuum has been affected negatively. It is likely that additional diagnostic trouble codes are stored in the Engine control module (ECM). These diagnostic trouble codes (DTCs) must be fault-traced and any faults remedied first. Check if other diagnostic trouble codes are stored in Engine control module (ECM). Ignition on. Click on the VCT2000 symbol to read off the diagnostic trouble codes (DTCs).

Are other diagnostic trouble codes (DTCs) stored in the engine control module (ECM)?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «CHECKING THE RANKING VALUES FOR OTHER DIAGNOSTIC TROUBLE CODES (DTCS)»(ref-466673-S25528673082012042500000)

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

  1. Ignition on or engine running
  2. Click on the VCT2000 symbol to activate the tool for reading off the ranking values. Check the read off ranking values against previous readings. Check that "Latest" is now lower. A lower ranking value indicates that the fault has been remedied. The same or a higher value indicates that the fault remains.

Do the ranking values indicate that the fault has been remedied?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S16361393732012042500000)

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

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

Note. The diagnostic trouble code (DTC) may be stored as a result of foreign objects in the intake passages or contaminants in the electronic throttle unit. Check and remedy these first.

The engine control module (ECM) has registered an internal fault.

If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults can be caused by interference at start up of the engine control module (ECM) or may be a different type of fault which occurs on different occasions. The fault is evaluated depending on how it occurs.

Other information

  1. see «ENGINE CONTROL MODULE (ECM)»(ref-466594-S40317974462012042500000)

Remedy as necessary.

  1. Continue Refer to «INFORMATION»(ref-466673-S19588743242012042500000)

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 INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

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

  1. Ignition on or engine running.
  2. Activate the tool for reading off the ranking values by clicking on the VCT2000 symbol. Check the read off ranking values against previous readings. Check that "Latest" is now lower. A lower ranking value indicates that the fault has been remedied. The same or a higher value indicates that the fault remains.

Do the ranking values indicate that the fault has been remedied?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S41716763912012042500000)

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.

No fault-tracing has been developed for this diagnostic trouble code (DTC). Do not fault-trace this diagnostic trouble code (DTC), it is only an indication that other diagnostic trouble codes (DTCs) in the engine control module (ECM) have deactivated the throttle unit. The power supply to the damper motor for the throttle unit has been switched off, and the throttle has been turned to the return position via the return spring in the throttle unit.

This diagnostic trouble code (DTC) cannot be erased before the diagnostic trouble code(s) (DTC) that caused the throttle unit to be deactivated in the engine control module (ECM) has/have been remedied and erased.

For further information about this diagnostic trouble code (DTC), select Information, then DTC information.

The engine control module (ECM) has registered an internal fault.

If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults can be caused by interference at start up of the engine control module (ECM) or may be a different type of fault which occurs on different occasions. The fault is evaluated depending on how it occurs. If the fault recurs, try downloading new software to the engine control module (ECM). If software cannot be downloaded or new software does not solve the problem, replace the engine control module (ECM) and download the relevant software to the new control module.

In the event of a permanent fault, try downloading new software to the engine control module (ECM). If software cannot be downloaded or new software does not solve the problem, replace the engine control module (ECM) and download the relevant software to the new control module.

see ENGINE CONTROL MODULE (ECM)

Remedy as necessary.

  1. Continue Refer to «INFORMATION»(ref-466673-S16466080472012042500000)

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 INTERNAL FAULT

See INTERNAL FAULT

See INTERNAL FAULT

See INTERNAL FAULT

See INTERNAL FAULT

See INTERNAL FAULT

See INTERNAL FAULT

See INTERNAL FAULT

See INTERNAL FAULT

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

  1. Ignition on or engine running
  2. Click on the VCT2000 symbol to activate the tool for reading off the ranking values. Check the read off ranking values against previous readings. Check that "Latest" is now lower. A lower ranking value indicates that the fault has been remedied. The same or a higher value indicates that the fault remains.

Do the ranking values indicate that the fault has been remedied?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S31757761462012042500000)

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 or make another attempt.

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

  1. Ignition on or engine running
  2. Click on the VCT2000 symbol to activate the tool for reading off the ranking values. Check the read off ranking values against previous readings. Check that "Latest" is now lower. A lower ranking value indicates that the fault has been remedied. The same or a higher value indicates that the fault remains.

Do the ranking values indicate that the fault has been remedied?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S27317920842012042500000)

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

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

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

  1. Ignition on or engine running
  2. Click on the VCT2000 symbol to activate the tool for reading off the ranking values. Check the read off ranking values against previous readings. Check that "Latest" is now lower. A lower ranking value indicates that the fault has been remedied. The same or a higher value indicates that the fault remains.

Do the ranking values indicate that the fault has been remedied?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S12603414592012042500000)

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

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

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

  1. Ignition on or engine running
  2. Click on the VCT2000 symbol to activate the tool for reading off the ranking values. Check the read off ranking values against previous readings. Check that "Latest" is now lower. A lower ranking value indicates that the fault has been remedied. The same or a higher value indicates that the fault remains.

Do the ranking values indicate that the fault has been remedied?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S05463852582012042500000)

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

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

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

  1. Ignition on or engine running
  2. Click on the VCT2000 symbol to activate the tool for reading off the ranking values. Check the read off ranking values against previous readings. Check that "Latest" is now lower. A lower ranking value indicates that the fault has been remedied. The same or a higher value indicates that the fault remains.

Do the ranking values indicate that the fault has been remedied?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S02141140402012042500000)

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

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

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

  1. Ignition on or engine running
  2. Click on the VCT2000 symbol to activate the tool for reading off the ranking values. Check the read off ranking values against previous readings. Check that "Latest" is now lower. A lower ranking value indicates that the fault has been remedied. The same or a higher value indicates that the fault remains.

Do the ranking values indicate that the fault has been remedied?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S12176258062012042500000)

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

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

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

  1. Ignition on or engine running
  2. Click on the VCT2000 symbol to activate the tool for reading off the ranking values. Check the read off ranking values against previous readings. Check that "Latest" is now lower. A lower ranking value indicates that the fault has been remedied. The same or a higher value indicates that the fault remains.

Do the ranking values indicate that the fault has been remedied?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S42696628682012042500000)

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

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

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

  1. Ignition on or engine running
  2. Click on the VCT2000 symbol to activate the tool for reading off the ranking values. Check the read off ranking values against previous readings. Check that "Latest" is now lower. A lower ranking value indicates that the fault has been remedied. The same or a higher value indicates that the fault remains.

Do the ranking values indicate that the fault has been remedied?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S31957468472012042500000)

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 INTERNAL FAULT

see INTERNAL FAULT

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

  1. Ignition on or engine running
  2. Click on the VCT2000 symbol to activate the tool for reading off the ranking values. Check the read off ranking values against previous readings. Check that "Latest" is now lower. A lower ranking value indicates that the fault has been remedied. The same or a higher value indicates that the fault remains.

Do the ranking values indicate that the fault has been remedied?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S42311802302012042500000)

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

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

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

  1. Ignition on or engine running
  2. Click on the VCT2000 symbol to activate the tool for reading off the ranking values. Check the read off ranking values against previous readings. Check that "Latest" is now lower. A lower ranking value indicates that the fault has been remedied. The same or a higher value indicates that the fault remains.

Do the ranking values indicate that the fault has been remedied?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S29256803172012042500000)

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

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

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

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

REPLACING THE CONTROL MODULE

Try a new alternator control module (ACM).

Remedy as necessary.

  1. Continue Refer to «VERIFICATION»(ref-466673-S38042514132012042500000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Start the engine
  4. Read off the battery voltage and the target value of the generator (GEN) charge voltage
  5. Load the battery by switching on high current consumers such as high beam and the blower fan etc. Check that the battery voltage is approximately 13.5-14.9 V. Check that the battery voltage is approximately the same as the target value for the generator (GEN) charge. Try different engine speeds (RPM).

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S08387268562012042500000)

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.

Try a new alternator control module (ACM).

Remedy as necessary.

  1. Continue Refer to «VERIFICATION»(ref-466673-S35834897272012042500000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Start the engine
  4. Read off the battery voltage and the target value of the generator (GEN) charge voltage
  5. Load the battery by switching on high current consumers such as high beam and the blower fan etc. Check that the battery voltage is approximately 13.5-14.9 V. Check that the battery voltage is approximately the same as the target value for the generator (GEN) charge. Try different engine speeds (RPM).

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S02222009672012042500000)

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.

ALTERNATOR CONTROL MODULE (ACM), FAULTY COMMUNICATION (2006, 2007)

See ALTERNATOR CONTROL MODULE (ACM), FAULTY COMMUNICATION (2006, 2007)

Note. This fault code is not caused by a fault and should not be rectified.

Erase the diagnostic trouble code (DTC).

HINT: The fault code will probably return. This is normal behavior.

See ALTERNATOR CONTROL MODULE (ACM), FAULTY COMMUNICATION (2006, 2007)

ALTERNATOR CONTROL MODULE (ACM), FAULTY COMMUNICATION (2008-2010)

See ALTERNATOR CONTROL MODULE (ACM), FAULTY COMMUNICATION (2008-2010)

CHECKING THE COMPONENT

  1. Ignition off. Check the auxiliaries belt and belt tensioner. Check for damage. Check the function of the generator (GEN) freewheel. In an undamaged freewheel, the generator rotor shaft can only rotate freely in one direction but not the other. Check that the air ducts for the generator (GEN) are not blocked. HINT: If the diagnostic trouble code is stored again after driving, replace the generator (GEN). Remedy as necessary.

Was a fault detected?

  1. YES Refer to «INFORMATION»(ref-466673-S23383620692012042500000)
  2. NO FAULT NOT FOUND: Troubleshooting has been completed.

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

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

  1. Ignition off. Check the generator (GEN) brushes. If the brushes are worn, replace the alternator control module (ACM). Check that the brushes can move in the regulator housing. The brushes are lightly sprung. Also check the slip rings. If the slip rings are worn, replace the generator (GEN). If the brushes and slip rings appear to be OK, try a new alternator control module (ACM). If this does not help, try a new generator (GEN). Remedy as necessary. Other information see «CONTENTS»(ref-466589-S05251896242012042500000)
  1. Continue Refer to «VERIFICATION»(ref-466673-S18396473822012042500000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Start the engine
  4. Read off the battery voltage and the target value of the generator (GEN) charge voltage
  5. Load the battery by switching on high current consumers such as high beam and the blower fan etc. Check that the battery voltage is approximately 13.5-14.9 V. Check that the battery voltage is approximately the same as the target value for the generator (GEN) charge. Try different engine speeds (RPM).

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-466673-S15191405182012042500000)

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

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

  1. Ignition off. Check that the air ducts for the generator (GEN) are not blocked. HINT: If the diagnostic trouble code is stored again after driving, replace the generator (GEN). Remedy as necessary.

Was a fault detected?

  1. YES Refer to «INFORMATION»(ref-466673-S19317853852012042500000)
  2. NO FAULT NOT FOUND: Troubleshooting has been completed.

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 FAULT-TRACING INFORMATION

See FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

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

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

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

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

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

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

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

see FAULT-TRACING INFORMATION

  1. Ignition on
  2. Wait for 20 seconds. NOTE: This first verification assumes that download of new software was required in the control module that generated the diagnostic trouble code. If download of new software was not required: read out diagnostic trouble codes and check if the code status is permanent or intermittent to learn how difficult it will be to find the fault. Read out all diagnostic trouble codes. Check that the diagnostic trouble code (DTC) for faulty communication is not stored again. Click the VCT2000 symbol to read diagnostic trouble codes (DTCs).

Has the fault been remedied?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «TAKING READING ON CABLE IN THE CAN NETWORK (HS-CAN)»(ref-466673-S26696263412012042500000)

TAKING READING ON CABLE IN THE CAN NETWORK (HS-CAN)

  1. Ignition off
  2. Disconnect the battery negative lead. NOTE: see «BATTERY DISCONNECTING AND CONNECTING»(ref-466644-S02084484912012042500000)
  3. Remove the central electronic module (CEM)
  4. Connect the breakout box to the cable harness for the central electronic module (CEM). Do not connect the central electronic module (CEM). HINT: Where a breakout box cannot be used, take readings from the rear of the affected connectors if possible. This prevents terminal pins and socket housings being damaged. Disconnect the CAN network to make it easier to locate a fault. A suitable point to disconnect the network is at the central electronic module (CEM). Fault-tracing therefore starts from the central electronic module (CEM). Take resistance readings across the following terminals. Various readings will be obtained due to the structure of the network. Twist the cable harness and work the connectors at accessible points along the cable harness in order to check whether the resistance changes during each measurement. This method can be used to detect intermittent short-circuits or open-circuits. NOTE: The following resistance readings only measure the main arteries in the high speed network, not the junctions that exist for some control modules. See the Wiring diagram Service Manual for the relevant car model. If an open-circuit is suspected in a cable, or a short-circuit is suspected in one of its junctions, the connector at the control module for this junction must be disconnected and the reading taken from there. Take the following readings Resistance between terminals #G14 (#14) and #G15 (#15). The resistance must be approximately 120 ohms. Resistance between terminal #G14 (#14) and a voltage connection and between terminal #G14 (#14) and a ground connection. In both cases, resistance should be infinite or very large (more than 1 Mohms). Resistance between terminal #G15 (#15) and a voltage connection and between terminal #G15 (#15) and a ground connection. In both cases, resistance should be infinite or very large (more than 1 Mohms). Resistance between terminals #F14 (#14) and #F16 (#16). The resistance must be approximately 120 ohms. Resistance between #F14 (#14) and a voltage connection and between terminal #F14 (#14) and a ground connection. In both cases, resistance should be infinite or very large (more than 1 Mohms). Resistance between #F16 (#16) and a voltage connection and between terminal #F16 (#16) and a ground connection. In both cases, resistance should be infinite or very large (more than 1 Mohms). HINT: If a fault is found, try to disconnect the junction with the fault at a point further forward. Try to locate the fault in this way. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX (2008-2011)»(ref-466603-S24918498562012042500000) see «SIGNAL DESCRIPTION CENTRAL ELECTRONIC MODULE (CEM)»(ref-466605-S14017567442012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Was a fault detected?

  1. YES Refer to «VERIFICATION»(ref-466673-S14370081632012042500000)
  2. NO Refer to «CHECKING THE TRAFFIC LOAD ON THE CAN CABLES»(ref-466673-S17677257642012042500000)

CHECKING THE TRAFFIC LOAD ON THE CAN CABLES

  1. Connect the central electronic module (CEM) to the breakout box
  2. Connect the battery. see «BATTERY DISCONNECTING AND CONNECTING»(ref-466644-S02084484912012042500000)
  3. Ignition on NOTE: When the adapter cable harness and the central electronic module (CEM) have been connected, there is access to both sides of the CAN network (both LS-CAN and HS-CAN). There will also be traffic on both networks. Be careful to check the terminals between which the readings are to be taken so that the intended reading is not taken on the wrong network. 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. Check as follows: Measure the voltage. Measure between terminal #G14 (#14) (HS-CAN-L) and ground. The voltage must be approximately 2.3 V Measure the voltage. Measure between terminal #G15 (#15) (HS-CAN-H) and ground. The voltage must be approximately 2.8 V.

Is the value OK?

  1. YES Refer to «INFORMATION»(ref-466673-S21778460212012042500000)
  2. NO Refer to «IDENTIFYING A CONTROL MODULE IN THE CAN NETWORK»(ref-466673-S26601492482012042500000)

IDENTIFYING A CONTROL MODULE IN THE CAN NETWORK

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.

Note. It is not necessarily the control module(s) that stored the diagnostic trouble code (DTC) that is communicating faultily. Faulty messages can come from any control module in the same section of the CAN network. However, faulty communication in one network cannot affect the communication on the other network. In other words, faulty communication on the LS-CAN cannot disrupt communication on the HS-CAN and vice versa.

  1. Measure the voltage between terminals #G14(#14) and #G15 (#15). Average voltage must be approximately 0.5 V (0.4-0.6 V). If there is a fault in communication, the voltage reading will be approximately 0.7 V or higher.

In order to identify which control module is communicating incorrectly, cut the power supply to one control module at a time. Check the voltage in the CAN cables again. The easiest way to cut the power supply is to remove the fuse(s) for the relevant control module. Continue until the voltage between the CAN cables drops to approximately 0.5 V.

HINT: When the suspected 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. Ignition off between each check.

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.

Note. A faulty control module that disrupts communication can place other control modules in Limp-Home mode (i. e. they work but with limited functionality) 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.

Remedy as necessary.

  1. Continue Refer to «VERIFICATION»(ref-466673-S14370081632012042500000)

HINT: Once a fault has been repaired, conduct a verification to check that the fault has been remedied.

  1. Reinstall the connectors, components etc.
  2. Ignition on
  3. Erase diagnostic trouble codes (DTCs) in all control modules
  4. Start the vehicle. Allow the vehicle to run for 10 minutes. Read off diagnostic trouble codes (DTCs).

Is the diagnostic trouble code for configuration fault regenerated?

  1. YES Refer to «INFORMATION»(ref-466673-S13223002352012042500000)
  2. 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.

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