Engine Control Module (ECM) Diagnostic Trouble Codes - 3 of 9: Wiring Volvo V50 I рестайлинг

CHECKING THE COMPONENT AND WIRING

1. Start the engine and run it to normal operating temperature. Read off the fuel pump (FP) load (signal from the engine control module (ECM) to the fuel pump (FP) control module). Check that the signal is approximately 50% (±10 %) with the engine idling at operating temperature. Check the cable between engine control module (ECM) terminal #B20 (#C20) and fuel pump (FP) module terminal #1. Check for a short-circuit to ground. Check for an open-circuit. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000) see «FUEL PUMP DRIVER MODULE (2007-2010)»(ref-466594-S41380616252012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S12224099492012042500000)

1. Start the engine and run it to normal operating temperature. Read off the fuel pump (FP) load (signal from the engine control module (ECM) to the fuel pump (FP) control module). Check that the signal is approximately 50% (±10 %) with the engine idling at operating temperature. Check the cable between engine control module (ECM) terminal #B20 (#C20) and fuel pump (FP) module terminal #1. Check for a short-circuit to ground. Check for an open-circuit. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000) see «FUEL PUMP DRIVER MODULE (2007-2010)»(ref-466594-S41380616252012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S30744816142012042500000)

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new fuel pressure sensor if no fault is found during the above fault-tracing.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S31874085992012042500000)

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new fuel pressure sensor if no fault is found during the above fault-tracing.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S20922085832012042500000)

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new fuel pressure sensor if no fault is found during the above fault-tracing.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
3. see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S13589895022012042500000)

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new fuel pressure sensor if no fault is found during the above fault-tracing.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S01295434162012042500000)

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new fuel pressure sensor if no fault is found during the above fault-tracing.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S07116309012012042500000)

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new fuel pressure sensor if no fault is found during the above fault-tracing.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
3. see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S36740751612012042500000)

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new fuel pressure sensor if no fault is found during the above fault-tracing.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S08796183802012042500000)

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new fuel pressure sensor if no fault is found during the above fault-tracing.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S37811210752012042500000)

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new fuel pressure sensor if no fault is found during the above fault-tracing.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
3. see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S38911541272012042500000)

HINT: To avoid injury, disconnect the power supply to the engine cooling fan (FC) during fault-tracing.

Check the resistance of the engine coolant temperature (ECT) sensor. Take readings between terminals #1 and #2 on the engine coolant temperature (ECT) sensor.

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

Take readings between

1. Engine Control Module (ECM) #A42 (#A42) and engine temperature sensor #1.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000)
3. see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000)
4. see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-466594-S40429581352012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S09804947962012042500000)

HINT: To avoid injury, disconnect the power supply to the engine cooling fan (FC) during fault-tracing.

Check the resistance of the engine coolant temperature (ECT) sensor. Take readings between terminals #1 and #2 on the engine coolant temperature (ECT) sensor.

Check the signal cable between engine control module (ECM) terminal #A67 (#B7) and engine coolant temperature (ECT) sensor terminal #1. Check for a short-circuit to ground.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000)
3. see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000)
4. see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-466594-S40429581352012042500000)
5. see «CONTENTS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S04077084652012042500000)

CHECKING THE COMPONENTS AND WIRING

HINT: To avoid injury, disconnect the power supply to the engine cooling fan (FC) during fault-tracing.

1. Check the connector on the engine coolant temperature (ECT) sensor. Check for contact resistance and oxidation. Check the resistance of the engine coolant temperature (ECT) sensor. Take readings between terminals #1 and #2 on the engine coolant temperature (ECT) sensor. Check signal cable for an open-circuit and short-circuit to supply voltage. Take readings between: Engine Control Module (ECM) #A42 (#A42) and engine temperature sensor #1. HINT: With the ignition on and engine coolant temperature (ECT) sensor connector disconnected the voltage between terminal #1 and ground terminal should be approximately 5 V. Check the ground lead. Check for an open-circuit. Take readings between: Engine Control Module (ECM) #A12 (#A12) and engine temperature sensor #2. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000) see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-466594-S40429581352012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S01297530932012042500000)

HINT: To avoid injury, disconnect the power supply to the engine cooling fan (FC) during fault-tracing.

1. Check the connector on the engine coolant temperature (ECT) sensor. Check for contact resistance and oxidation. Check the resistance of the engine coolant temperature (ECT) sensor. Take readings between terminals #1 and #2 on the engine coolant temperature (ECT) sensor. Check the signal cable between engine control module (ECM) terminal #A67 (#B7) and engine coolant temperature (ECT) sensor terminal #1. Check for an open-circuit. Check for a short-circuit to supply voltage. HINT: With the ignition on and engine coolant temperature (ECT) sensor connector disconnected the voltage between terminal #1 and ground terminal should be approximately 5 V. Check the ground lead between engine control module (ECM) terminal #A42 (#A42) and engine coolant temperature (ECT) sensor terminal #2. Check for an open-circuit. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000) see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-466594-S40429581352012042500000) see «CONTENTS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S23300014802012042500000)

Check the signal cable between engine control module (ECM) terminal #A91 (#B31) and fuel pressure sensor terminal #4. Check for a short-circuit to ground.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000)
3. see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CONTENTS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S26029416132012042500000)

1. Check the fuel pressure sensor connectors. Check for contact resistance and oxidation. Check signal cable for an open-circuit and short-circuit to supply voltage. Take readings between: Engine Control Module (ECM) #A89 (#B29) and fuel pressure sensor #4. Check the ground lead. Check for an open-circuit. Take readings between: Engine Control Module (ECM) #A15 (#A15) and fuel pressure sensor #1. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S17952350572012042500000)

1. Check the fuel pressure sensor connectors. Check for contact resistance and oxidation. Check the signal cable between engine control module (ECM) terminal #A91 (#B31) and fuel pressure sensor terminal #4. Check for a short-circuit to supply voltage. Check for an open-circuit. Check the ground lead between engine control module (ECM) terminal #A15 (#A15) and fuel pressure sensor terminal #1. Check for an open-circuit. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000) see «CONTENTS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S12009981972012042500000)

1. Check the fuel pressure sensor connectors. Check for contact resistance and oxidation. Check signal cable for an open-circuit and short-circuit to supply voltage. Take readings between: Engine Control Module (ECM) #A89 (#B29) and fuel pressure sensor #4. Check the ground lead. Check for an open-circuit. Take readings between: Engine Control Module (ECM) #A15 (#A15) and fuel pressure sensor #1. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S26302506242012042500000)

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

Take readings between

1. Engine Control Module (ECM) #A89 (#B29) and fuel pressure sensor #4.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000)
3. see «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S38131742422012042500000)

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new fuel pressure sensor if no fault is found during the above fault-tracing.

Other information

1. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
2. see «TEMPERATURE AND MANIFOLD ABSOLUTE PRESSURE SENSOR (MAP)»(ref-466594-S34563894352012042500000)

1. Continue Refer to «VERIFICATION»(ref-466655-S00457887692012042500000)