Engine Control Module (ECM) Diagnostic Trouble Codes - 7 of 11: Wiring Volvo S80 I

Checking the components and wiring

Check the resistance of the evaporative emission system (EVAP) valve.

Check the signal cable between engine control module (ECM) terminal #A9 (#A9) and evaporative emission system (EVAP) valve terminal #2. Check for an open-circuit.

Check the power supply between system relay terminal #3 and evaporative emission system (EVAP) valve terminal #1. Check for an open-circuit.

Remedy as necessary.

Other information

1. See «Connecting the breakout box»(ref-440211-S03702023042011121400000)
2. For information about signals for 5 cylinder engines: «Signal specification»(ref-440214-S33124753252011121400000)
3. For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
4. For the location of components on 5 cylinder engines, see: «Location of components»(ref-461673-S37190921092012040200000)
5. Location of components, 6 cylinder normally aspirated engines: For 6 cylinder naturally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder naturally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder naturally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
6. Location of components, 6 cylinder turbocharged engines: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
7. See «Contents»(ref-440209-S18666729612011121400000)

1. Continue Refer to «Verification»(ref-440288-S20267799332011121400000)

Check the resistance of the evaporative emission system (EVAP) valve.

Check the signal cable between engine control module (ECM) terminal #A9 (#A9) and evaporative emission system (EVAP) valve terminal #2. Check for a short-circuit to supply voltage.

HINT: Use an electrician's screwdriver with at least a 3 W bulb to determine whether there is a short-circuit to supply voltage in the cable.

Remedy as necessary.

Other information

1. See «Connecting the breakout box»(ref-440211-S03702023042011121400000)
2. For information about signals for 5 cylinder engines: «Signal specification»(ref-440214-S33124753252011121400000)
3. For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
4. See «Component specifications»(ref-461750-S34427939622012040200000)
5. For the location of components on 5 cylinder engines, see: «Location of components»(ref-461673-S37190921092012040200000)
6. Location of components, 6 cylinder normally aspirated engines: For 6 cylinder naturally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder naturally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder naturally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
7. Location of components, 6 cylinder turbocharged engines: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
8. See «Contents»(ref-440209-S18666729612011121400000)

1. Continue Refer to «Verification»(ref-440288-S19759719772011121400000)

Check the resistance of the evaporative emission system (EVAP) valve.

Check the signal cable between engine control module (ECM) terminal #A9 (#A9) and evaporative emission system (EVAP) valve terminal #2. Check for a short-circuit to ground.

Remedy as necessary.

Other information

1. See «Connecting the breakout box»(ref-440211-S03702023042011121400000)
2. For information about signals for 5 cylinder engines: «Signal specification»(ref-440214-S33124753252011121400000)
3. For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
4. For the location of components on 5 cylinder engines, see: «Location of components»(ref-461673-S37190921092012040200000)
5. Location of components, 6 cylinder normally aspirated engines: For 6 cylinder naturally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder naturally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder naturally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
6. Location of components, 6 cylinder turbocharged engines: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
7. See «Contents»(ref-440209-S18666729612011121400000)

1. Continue Refer to «Verification»(ref-440288-S17234114462011121400000)

Checking the wiring

Check the cable between engine control module (ECM) terminal #B34 (#B44) and leak diagnostic unit terminal #2. Check for an open-circuit.

Remedy as necessary.

Other information

1. See «Connecting the breakout box»(ref-440211-S03702023042011121400000)
2. For information about signals for 5 cylinder engines: «Signal specification»(ref-440214-S33124753252011121400000)
3. For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
4. See «Leak diagnostic pump, replacing»(ref-440269-S15712613922011121400000)
5. See «Contents»(ref-440209-S18666729612011121400000)

Scheme 204

1. Continue Refer to «Information»(ref-440288-S19761952002011121400000)

Check the signal cable. Check for a short-circuit to supply voltage.

Take readings between

1. Engine control module (ECM) #B34 (#C44) and leakage diagnostic unit #2.

Remedy as necessary.

Other information

1. See «Connecting the breakout box»(ref-440211-S03702023042011121400000)
2. For information about signals for 5 cylinder engines: «Signal specification»(ref-440214-S33124753252011121400000)
3. For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
4. See «Leak diagnostic pump, replacing»(ref-440269-S15712613922011121400000)
5. See «Contents»(ref-440209-S18666729612011121400000)

1. Continue Refer to «Information»(ref-440288-S30538224792011121400000)

Check the signal cable. Check for a short-circuit to ground. Take readings between

1. Engine control module (ECM) #B34 (#C44) and leakage diagnostic unit #2.

Remedy as necessary.

Other information

1. See «Connecting the breakout box»(ref-440211-S03702023042011121400000)
2. For information about signals for 5 cylinder engines: «Signal specification»(ref-440214-S33124753252011121400000)
3. For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
4. See «Leak diagnostic pump, replacing»(ref-440269-S15712613922011121400000)
5. See «Contents»(ref-440209-S18666729612011121400000)

1. Continue Refer to «Information»(ref-440288-S38506588162011121400000)

Checking components and wiring

Check the leak diagnostic unit connectors. Check for contact resistance and oxidation.

Check the resistance of the pump motor between the leak diagnostic unit connector terminals #1 and #4 (leak diagnostic pump side).

Try a new leak diagnostic unit if no fault is found during the above fault-tracing.

Remedy as necessary.

Other information

1. For resistance values, see «Component specifications»(ref-461750-S34427939622012040200000)
2. To connect the breakout box, see «Connecting the breakout box»(ref-440211-S03702023042011121400000)
3. To access or replace the leak diagnostic unit, see «Leak diagnostic pump, replacing»(ref-440269-S15712613922011121400000)
4. For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000)
5. For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
6. See «Contents»(ref-440209-S18666729612011121400000) .

Scheme 205

1. Continue Refer to «Verification»(ref-440288-S17305292432011121400000)

Check the leak diagnostic unit connectors. Check for contact resistance and oxidation.

Check the resistance of the pump motor between the leak diagnostic unit connector terminals #1 and #4 (leak diagnostic pump side).

Check the hose between the leak diagnostic unit and the EVAP canister. Check for blockages.

Try a new leak diagnostic unit if no fault is found during the above fault-tracing.

Remedy as necessary.

Other information

1. For resistance values, see «Component specifications»(ref-461750-S34427939622012040200000)
2. To connect the breakout box, see «Connecting the breakout box»(ref-440211-S03702023042011121400000)
3. To access or replace the leak diagnostic unit, see «Leak diagnostic pump, replacing»(ref-440269-S15712613922011121400000)
4. To check the hoses, see «Leak diagnostic pump, replacing»(ref-440269-S15712613922011121400000)
5. For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000)
6. For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
7. See «Contents»(ref-440209-S18666729612011121400000) .

1. Continue Refer to «Verification»(ref-440288-S06594303302011121400000)

Check the leak diagnostic unit connectors. Check for contact resistance and oxidation.

Check the resistance of the pump motor between the leak diagnostic unit connector terminals #1 and #4 (leak diagnostic pump side).

Check the hose and the filter for the air intake on the leak diagnostic unit. Check for blockages.

Try a new leak diagnostic unit if no fault is found during the above fault-tracing.

Remedy as necessary.

Other information

1. For resistance values, see «Component specifications»(ref-461750-S34427939622012040200000)
2. To connect the breakout box, see «Connecting the breakout box»(ref-440211-S03702023042011121400000)
3. To check the hoses, see «Leak diagnostic pump, replacing»(ref-440269-S15712613922011121400000)
4. To access or replace the leak diagnostic unit, see «Leak diagnostic pump, replacing»(ref-440269-S15712613922011121400000)
5. For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000)
6. For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
7. See «Contents»(ref-440209-S18666729612011121400000) .

1. Continue Refer to «Verification»(ref-440288-S25697875712011121400000)

Check the leak diagnostic unit connectors. Check for contact resistance and oxidation.

Check the resistance of the pump motor between the leak diagnostic unit connector terminals #1 and #4 (leak diagnostic pump side).

Try a new leak diagnostic unit if no fault is found during the above fault-tracing.

Remedy as necessary.

Other information

1. For resistance values, see «Component specifications»(ref-461750-S34427939622012040200000)
2. To connect the breakout box, see «Connecting the breakout box»(ref-440211-S03702023042011121400000)
3. To access or replace the leak diagnostic unit, see «Leak diagnostic pump, replacing»(ref-440269-S15712613922011121400000)
4. For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000)
5. For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
6. See «Contents»(ref-440209-S18666729612011121400000) .

1. Continue Refer to «Verification»(ref-440288-S28663798232011121400000)

Check the resistance of the valve between the leak diagnostic unit connector terminals #3 and #4 (leak diagnostic pump side).

Check the signal cable between engine control module (ECM) terminal #B40 (#B50) and leak diagnostic unit terminal #3. Check for a short-circuit to supply voltage.

Try a new leak diagnostic unit if no fault is found during the above fault-tracing.

Remedy as necessary.

Other information

1. See «Connecting the breakout box»(ref-440211-S03702023042011121400000)
2. For information about signals for 5 cylinder engines: «Signal specification»(ref-440214-S33124753252011121400000)
3. For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
4. For resistance values: «Component specifications»(ref-461750-S34427939622012040200000)
5. See «Leak diagnostic pump, replacing»(ref-440269-S15712613922011121400000)
6. See «Contents»(ref-440209-S18666729612011121400000)

1. Continue Refer to «Verification»(ref-440288-S28727859092011121400000)

Checking component and wiring

Check if there is any refrigerant in the air conditioning (A/C).

HINT: If there is refrigerant in the A/C system there is probably a fault in the A/C pressure sensor.

Check air conditioning (A/C) system for damage and leakage.

Remedy as necessary.

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
2. Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
3. For resistance values, see «Component specifications»(ref-461750-S34427939622012040200000) .
4. For information about signals on 5-cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
5. For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Scheme 206

1. Continue Refer to «Verification»(ref-440288-S41473455882011121400000)

Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) sensor #2 for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults

Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an intermittent open-circuit according to Open-circuit, intermittent faults

Check power supply cable between engine control module (ECM) #A60 (#A60) and air conditioning (A/C) pressure sensor #1 for an intermittent open-circuit according to Open-circuit, intermittent faults

Remedy as necessary

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
2. Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
3. For information about signals on 5-cyl engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
4. For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

1. Continue Refer to «Information»(ref-440288-S22025158102011121400000)

Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an open-circuit according to Open-circuit, permanent faults .

Check power supply cable between engine control module (ECM) #A60 (#A60) and air conditioning (A/C) pressure sensor #1 for an open-circuit according to Open-circuit, permanent faults .

Remedy as necessary.

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
2. Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
3. For information about signals on 5-cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
4. For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

1. Continue Refer to «Verification»(ref-440288-S35650385762011121400000)

Check air conditioning (A/C) pressure sensor connector for intermittent contact resistance and oxidation according to Contact resistance and oxidation

Check cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) sensor #2 for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults

Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for an intermittent open circuit according to Open-circuit, intermittent faults

Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an intermittent open-circuit according to Open-circuit, intermittent faults

Remedy as necessary

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
2. Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
3. For information about signals on 5-cyl engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
4. For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

1. Continue Refer to «Information»(ref-440288-S31827206792011121400000)

Check air conditioning (A/C) pressure sensor connector for contact resistance and oxidation according to Contact resistance and oxidation .

Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for an short-circuit to ground according to Short-circuit to ground, permanent faults .

Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for an open circuit according to Open-circuit, permanent faults .

Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an open-circuit according to Open-circuit, permanent faults .

Remedy as necessary.

Other information

1. Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
2. Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
3. For information about signals on 5-cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
4. For information about signals for 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

1. Continue Refer to «Verification»(ref-440288-S37071105502011121400000)

Check the engine speed (RPM) sensor connector. Check for intermittent contact resistance and oxidation.

HINT: The engine speed (RPM) sensor and its wiring are sensitive to interference from surrounding cables, the starter motor cable for example, or similar high amperage cables.

Interference can cause difficulty in starting the engine, prevent the engine starting at all, or cause intermittent operation of the tachometer, etc.

Check whether any cables with high power consumption are incorrectly installed, i. e. too close to the engine speed (RPM) sensor or its wiring.

Remedy as necessary.

Other information

1. For B5xx4T -2001, see «Replacing the engine speed (RPM) sensor»(ref-461749-S36199811742012040200000)
2. For B5xx4T 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S03460259482011121400000)
3. For B6xx4x -2001, see «Replacing the engine speed (RPM) sensor»(ref-440263-S12980455952011121400000)
4. For B6xx4x 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S05291773442011121400000) .

1. Continue Refer to «Verification»(ref-440288-S25630003982011121400000)

Checking the component and wiring

1. Check the engine speed (RPM) sensor connector. Check for intermittent contact resistance and oxidation. HINT: The engine speed (RPM) sensor and its wiring are sensitive to interference from surrounding cables, the starter motor cable for example, or similar high amperage cables. Interference can cause difficulty in starting the engine, prevent the engine starting at all, or cause intermittent operation of the tachometer, etc. Check whether any cables with high power consumption are incorrectly installed, i. e. too close to the engine speed (RPM) sensor or its wiring. Remedy as necessary Other information For B5xx4T -2001, see «Replacing the engine speed (RPM) sensor»(ref-461749-S36199811742012040200000) For B5xx4T 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S03460259482011121400000) For B6xx4x -2001, see «Replacing the engine speed (RPM) sensor»(ref-440263-S12980455952011121400000) For B6xx4x 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S05291773442011121400000) .

1. Continue Refer to «Verification»(ref-440288-S25280508442011121400000)