Engine Control Module (ECM) Diagnostic Trouble Codes - 1 of 9: Wiring Volvo V50 I

CHECKING THE COMPONENTS AND WIRING

Note. Check whether diagnostic trouble code (DTC) ECM-1000 for the internal atmospheric pressure sensor ECM-1000 has been stored. Check if one of diagnostic trouble codes (DTCs) ECM-140A or ECM-1400 for the manifold absolute pressure (MAP) sensor has been stored in the engine control module (ECM). If one of the diagnostic trouble codes (DTCs) has been stored, fault-tracing must first be carried out according to the fault-tracing instructions for the relevant diagnostic trouble code (DTC).

1. Ignition on. Activate reading the value from the manifold absolute pressure (MAP) sensor and the atmospheric pressure sensor. Check the difference between the pressure readings. The difference must not be greater than 70 hPA. HINT: The atmospheric pressure at normal sea level corresponds to approximately 1013 hPA. If the difference is greater than 70 hPa, check the cables and connectors for the manifold absolute pressure (MAP) sensor. Check for contact resistance. Check for oxidation. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check for an open-circuit. Remedy as necessary. If no fault can be detected in the cables or connectors, try a new manifold absolute pressure (MAP) sensor. Check the difference between the pressure readings. The internal atmospheric pressure sensor in the engine control module (ECM) is damaged if the above checks have been carried out and the difference between the pressure readings is still greater than 70 hPa. The atmospheric pressure sensor is integrated in the engine control module (ECM). The atmospheric pressure sensor cannot be replaced as an individual component. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000) see «ENGINE CONTROL MODULE (ECM)»(ref-466594-S40317974462012042500000) To access or replace the pressure sensor for the inlet manifold: «LOCATION OF COMPONENTS, ENGINE COMPARTMENT»(ref-466647-S29464904412012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S04684607572012042500000)

Note. Check whether diagnostic trouble code (DTC) ECM-1000 for the internal atmospheric pressure sensor ECM-1000 has been stored. Check if one of diagnostic trouble codes (DTCs) ECM-140A or ECM-1400 for the manifold absolute pressure (MAP) sensor has been stored in the engine control module (ECM). If one of the diagnostic trouble codes (DTCs) has been stored, fault-tracing must first be carried out according to the fault-tracing instructions for the relevant diagnostic trouble code (DTC).

1. Ignition on. Activate reading the value from the manifold absolute pressure (MAP) sensor and the atmospheric pressure sensor. Check the difference between the pressure readings. The difference must not be greater than 70 hPA. HINT: The atmospheric pressure at normal sea level corresponds to approximately 1013 hPA. If the difference is greater than 70 hPa, check the cables and connectors for the manifold absolute pressure (MAP) sensor. Check for contact resistance. Check for oxidation. Check for a short-circuit to ground. Check for a short-circuit to supply voltage. Check for an open-circuit. Remedy as necessary. If no fault can be detected in the cables or connectors, try a new manifold absolute pressure (MAP) sensor. Check the difference between the pressure readings. The internal atmospheric pressure sensor in the engine control module (ECM) is damaged if the above checks have been carried out and the difference between the pressure readings is still greater than 70 hPa. The atmospheric pressure sensor is integrated in the engine control module (ECM). The atmospheric pressure sensor cannot be replaced as an individual component. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000) see «ENGINE CONTROL MODULE (ECM)»(ref-466594-S40317974462012042500000) To access or replace the pressure sensor for the inlet manifold: «LOCATION OF COMPONENTS, ENGINE COMPARTMENT»(ref-466647-S05486220892012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S15715365032012042500000)

CHECKING THE COMPONENT AND WIRING

Check the cable between engine control module (ECM) terminal #A93 (#B33) and mass air flow (MAF) sensor terminal #4. Check for a short-circuit to supply voltage. Check for an open-circuit.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «MASS AIR FLOW (MAF) SENSOR»(ref-466648-S27926788382012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Scheme 21

1. Continue Refer to «VERIFICATION»(ref-466646-S08596292202012042500000)

Check the cable between engine control module (ECM) terminal #A93 (#B33) and mass air flow (MAF) sensor terminal #4. Check for a short-circuit to supply voltage. Check for an open-circuit.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
3. see «MASS AIR FLOW (MAF) SENSOR»(ref-466648-S27926788382012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S15283234532012042500000)

Check the cable between engine control module (ECM) terminal #A93 (#B33) and mass air flow (MAF) 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-S15475582172012042500000)
3. see «MASS AIR FLOW (MAF) SENSOR»(ref-466648-S27926788382012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S29248993862012042500000)

Check the cable between engine control module (ECM) terminal #A93 (#B33) and mass air flow (MAF) 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-S26583508152012042500000)
3. see «MASS AIR FLOW (MAF) SENSOR»(ref-466648-S27926788382012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S00061267492012042500000)

Check the cable between engine control module (ECM) terminal #A63 (#B3) and mass air flow (MAF) sensor terminal #5. Check for a short-circuit to supply voltage.

Check the ground lead between engine control module (ECM) terminal #A62 (#B2) and mass air flow (MAF) sensor terminal #3. Check for an open-circuit.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000)
3. The air flow reading from the mass air flow (MAF) sensor must be 0 kg/h with the engine switched off and ignition on
4. see «MASS AIR FLOW (MAF) SENSOR»(ref-466648-S11977590702012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

Scheme 22

1. Continue Refer to «VERIFICATION»(ref-466646-S22236552932012042500000)

Check signal cable for an open-circuit and short-circuit to supply voltage.

Take readings between

1. Engine Control Module (ECM) #A63 (#B3) and mass air flow sensor #5.

Check the ground lead. Check for an open-circuit.

Take readings between

1. Engine Control Module (ECM) #A61 (#B1) and mass air flow sensor #3.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000)
3. The air flow reading from the mass air flow (MAF) sensor must be 0 kg/h with the engine switched off and ignition on
4. see «MASS AIR FLOW (MAF) SENSOR»(ref-466648-S11977590702012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S05882366222012042500000) .

Check the mass air flow (MAF) sensor connector. Check for contact resistance and oxidation.

Check the intake system for leakage.

Check the power cable between the system relay and mass air flow (MAF) sensor terminal #2. Check for an open-circuit.

Check the signal cable between engine control module (ECM) terminal #A63 (#B3) and mass air flow (MAF) sensor terminal #5. Check for an open-circuit. Check for a short-circuit to ground.

Check the power cable between engine control module (ECM) terminal #A18 (#A18) and mass air flow (MAF) sensor terminal #4. Check for an open-circuit.

HINT: With the ignition on and the mass air flow (MAF) sensor connector connected, the voltage between mass air flow (MAF) sensor terminal #2 and ground must be approximately U bat.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (B5254T3; 2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (B5254T3; 2006-2007)
3. The air flow reading from the mass air flow (MAF) sensor may vary by between 12-20 kg/h at idle speed, depending on the engine load and temperature. The value may be in excess of 20 kg/h if the engine is cold
4. see «AIR LEAKS IN THE INTAKE SYSTEM, CHECKING»(ref-479169-S42610968362012061200000)
5. see «MASS AIR FLOW (MAF) SENSOR»(ref-466648-S11977590702012042500000)
6. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S33753103302012042500000)

1. Check the boost pressure sensor connector. 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) #A86 (#B26) and boost pressure sensor #4. Check the ground lead. Check for an open-circuit. Take readings between: Engine Control Module (ECM) #A38 (#A38) and boost pressure sensor #1. HINT: The diagnostic trouble code (DTC) may be caused by a damaged boost pressure sensor. Remedy as necessary. Other information: see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) see «TEMPERATURE AND MANIFOLD ABSOLUTE PRESSURE SENSOR (MAPT)»(ref-466594-S34563894352012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S27671044782012042500000)

Check the signal cable between control module terminal #A38 (#A38) and boost pressure sensor terminal #4. Check for a short-circuit to ground.

HINT: The diagnostic trouble code (DTC) may be caused by a damaged boost pressure sensor.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000)
3. see «TEMPERATURE AND MANIFOLD ABSOLUTE PRESSURE SENSOR (MAPT)»(ref-466594-S34563894352012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S41550032922012042500000)

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

Take readings between

1. Engine Control Module (ECM) #A86 (#B26) and boost pressure sensor #4.

HINT: The diagnostic trouble code (DTC) may be caused by a damaged boost pressure sensor.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000)
3. see «TEMPERATURE AND MANIFOLD ABSOLUTE PRESSURE SENSOR (MAPT)»(ref-466594-S34563894352012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S42451439082012042500000) .

Check the cable between engine control module (ECM) terminal #A70 (#B10) and mass air flow (MAF) sensor terminal #3. Check for a short-circuit to supply voltage.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «MASS AIR FLOW (MAF) SENSOR»(ref-466648-S27926788382012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S23210116152012042500000)

Check the cable between engine control module (ECM) terminal #A70 (#B10) and mass air flow (MAF) sensor terminal #3. Check for a short-circuit to supply voltage.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
3. see «MASS AIR FLOW (MAF) SENSOR»(ref-466648-S27926788382012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S38230433242012042500000)

Check the cable between engine control module (ECM) terminal #A70 (#B10) and mass air flow (MAF) sensor terminal #3. Check for a short-circuit to ground. Check for an open-circuit.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «MASS AIR FLOW (MAF) SENSOR»(ref-466648-S27926788382012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S34219259852012042500000)

Check the cable between engine control module (ECM) terminal #A70 (#B10) and mass air flow (MAF) sensor terminal #3. Check for a short-circuit to ground. Check for an open-circuit.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
3. see «MASS AIR FLOW (MAF) SENSOR»(ref-466648-S27926788382012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S06841491422012042500000)

Check the intake air temperature (IAT) sensor between terminals #1 and #2 (sensor side). Check the resistance.

HINT: The intake air temperature (IAT) sensor is integrated in the boost pressure sensor.

Check the boost pressure sensor connector. Check for contact resistance and oxidation.

Check the signal cable between control module terminal #A87 (#B27) and boost pressure sensor terminal #2. Check for a short-circuit to supply voltage. Check for an open-circuit.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (B5254T3; 2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (B5254T3; 2006-2007)
3. see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000)
4. see «TEMPERATURE AND MANIFOLD ABSOLUTE PRESSURE SENSOR (MAPT)»(ref-466594-S34563894352012042500000) (B5254T3; 2005-2007), or «TEMPERATURE AND MANIFOLD ABSOLUTE PRESSURE SENSOR (MAPT)»(ref-466594-S37555462532012042500000) (B5254T7; 2008-2012)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000) .

1. Continue Refer to «VERIFICATION»(ref-466646-S18850855412012042500000)

CHECKING THE WIRING AND COMPONENT

HINT: The intake air temperature (IAT) sensor is integrated in the boost pressure sensor.

1. Check the boost pressure sensor connector. Check for contact resistance and oxidation. Check the intake air temperature (IAT) sensor between terminals #1 and #2 (sensor side). Check the resistance. Check the signal cable between control module terminal #A87 (#B27) and boost pressure sensor terminal #2. Check for a short-circuit to supply voltage. Check for an open-circuit. Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (B5254T3; 2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (B5254T3; 2006-2007) see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000) see «TEMPERATURE AND MANIFOLD ABSOLUTE PRESSURE SENSOR (MAPT)»(ref-466594-S34563894352012042500000) (B5254T3; 2005-2007), or «TEMPERATURE AND MANIFOLD ABSOLUTE PRESSURE SENSOR (MAPT)»(ref-466594-S37555462532012042500000) (B5254T7; 2008-2012) see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000) .

1. Continue Refer to «VERIFICATION»(ref-466646-S25095252172012042500000)

Check the cable between engine control module (ECM) terminal #A69 (#B9) and pressure sensor terminal #1. Check for a short-circuit to supply voltage. Check for an open-circuit.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR»(ref-466594-S21304092802012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
5. see «ENGINE CONTROL MODULE (ECM)»(ref-466594-S40317974462012042500000)

Scheme 23

1. Continue Refer to «VERIFICATION»(ref-466646-S42220460962012042500000)

Check the cable between engine control module (ECM) terminal #A69 (#B9) and pressure sensor terminal #1. Check for a short-circuit to supply voltage. Check for an open-circuit.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
3. see «MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR»(ref-466594-S21304092802012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
5. see «ENGINE CONTROL MODULE (ECM)»(ref-466594-S40317974462012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S41072496162012042500000)

Check the cable between engine control module (ECM) terminal #A69 (#B9) and pressure 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-S15475582172012042500000)
3. see «MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR»(ref-466594-S21304092802012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
5. see «ENGINE CONTROL MODULE (ECM)»(ref-466594-S40317974462012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S22647332102012042500000)

Check the cable between engine control module (ECM) terminal #A69 (#B9) and pressure 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-S26583508152012042500000)
3. see «MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR»(ref-466594-S21304092802012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)
5. see «ENGINE CONTROL MODULE (ECM)»(ref-466594-S40317974462012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S18400648572012042500000)

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-466594-S14102833002012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Scheme 24

1. Continue Refer to «VERIFICATION»(ref-466646-S15763286122012042500000)

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
3. see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-466594-S14102833002012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S25064258162012042500000)

Check the 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-S15475582172012042500000)
3. see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-466594-S14102833002012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S41442600622012042500000)

Check the 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-S26583508152012042500000)
3. see «ENGINE COOLANT TEMPERATURE SENSOR (ECT)»(ref-466594-S14102833002012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S38819861252012042500000)

CHECKING COMPONENTS AND WIRING

Check between terminals #1 and #2 in the injector that relates to the diagnostic trouble code (DTC). Check the resistance.

Check the cable that relates to the diagnostic trouble code (DTC). Check for an open-circuit.

Check between

1. Engine control module (ECM) terminal #A1 (#A1) and injector terminal #2 (ECM-200B)
2. Engine control module (ECM) terminal #A25 (#A25) and injector terminal #2 (ECM-201B)
3. Engine control module (ECM) terminal #A3 (#A3) and injector terminal #2 (ECM-202B)
4. Engine control module (ECM) terminal #A2 (#A2) and injector terminal #2 (ECM-203B)
5. Engine control module (ECM) terminal #A26 (#A26) and injector terminal #2 (ECM-204B).

Check the power cable between the system relay and injector terminal #1. Check for an open-circuit.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (B5254T3; 2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (B5254T3; 2006-2007)
3. see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000)
4. see «FUEL INJECTOR»(ref-466648-S10967212142012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

Scheme 25

Scheme 26

1. Continue Refer to «INFORMATION»(ref-466646-S15006392512012042500000)

Check between terminals #1 and #2 in the injector that relates to the diagnostic trouble code (DTC). Check the resistance.

Check the cable that relates to the diagnostic trouble code (DTC). Check for a short-circuit to supply voltage.

Check between

1. Engine control module (ECM) terminal #A1 (#A1) and injector terminal #2 (ECM-200C)
2. Engine control module (ECM) terminal #A25 (#A25) and injector terminal #2 (ECM-201C)
3. Engine control module (ECM) terminal #A3 (#A3) and injector terminal #2 (ECM-202C)
4. Engine control module (ECM) terminal #A2 (#A2) and injector terminal #2 (ECM-203C)
5. Engine control module (ECM) terminal #A26 (#A26) and injector terminal #2 (ECM-204C).

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (B5254T3; 2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (B5254T3; 2006-2007)
3. see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000)
4. see «FUEL INJECTOR»(ref-466648-S10967212142012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «INFORMATION»(ref-466646-S35196843632012042500000)

Check between terminals #1 and #2 in the injector that relates to the diagnostic trouble code (DTC). Check the resistance.

Check the cable that relates to the diagnostic trouble code (DTC). Check for a short-circuit to ground.

Check between

1. Engine control module (ECM) terminal #A1 (#A1) and injector terminal #2 (ECM-200D)
2. Engine control module (ECM) terminal #A25 (#A25) and injector terminal #2 (ECM-201D)
3. Engine control module (ECM) terminal #A3 (#A3) and injector terminal #2 (ECM-202D)
4. Engine control module (ECM) terminal #A2 (#A2) and injector terminal #2 (ECM-203D)
5. Engine control module (ECM) terminal #A26 (#A26) and injector terminal #2 (ECM-204D).

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (B5254T3; 2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (B5254T3; 2006-2007)
3. see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000)
4. see «FUEL INJECTOR»(ref-466648-S10967212142012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «INFORMATION»(ref-466646-S32120650572012042500000)

Check the cable between heated oxygen sensor (HO2S) terminal #1 and the power supply from the system relay. Check for a short-circuit to supply voltage.

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S32701656862012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S12974937122012042500000)

Check the cable between heated oxygen sensor (HO2S) terminal #1 and the power supply from the system relay. Check for a short-circuit to supply voltage.

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S32701656862012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S38281984542012042500000)

Check the cable between heated oxygen sensor (HO2S) terminal #1 and the power supply from the system relay. Check for an open-circuit. Check for a short-circuit to ground.

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S32701656862012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S20386397402012042500000)

Check the cable between heated oxygen sensor (HO2S) terminal #1 and the power supply from the system relay. Check for an open-circuit. Check for a short-circuit to ground.

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S32701656862012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S27623356462012042500000)

Check the cable between engine control module (ECM) terminal #A95 (#B35) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to supply voltage.

Check the cable between engine control module (ECM) terminal #A47 (#A47) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to ground.

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S32701656862012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S18605991592012042500000)

Check the cable between engine control module (ECM) terminal #A95 (#B35) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to supply voltage.

Check the cable between engine control module (ECM) terminal #A47 (#A47) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to ground.

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S32701656862012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S33565314412012042500000)

Check the cable between engine control module (ECM) terminal #A47 (#A47) and heated oxygen sensor (HO2S) terminal #4. Check for an open-circuit

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S32701656862012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S03464546962012042500000)

Check the cable between engine control module (ECM) terminal #A47 (#A47) and heated oxygen sensor (HO2S) terminal #4. Check for an open-circuit

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S32701656862012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S21534615652012042500000)

Check the cable between engine control module (ECM) terminal #A68 (#B8) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to supply voltage

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S32701656862012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S03512203772012042500000)

Check the cable between engine control module (ECM) terminal #A68 (#B8) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to supply voltage

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S32701656862012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S12200297952012042500000)

Check the cable between engine control module (ECM) terminal #A68 (#B8) and heated oxygen sensor (HO2S) terminal #4. Check for an open-circuit. Check for a short-circuit to ground.

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
2. «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S32701656862012042500000)
3. «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S17768738232012042500000)

Check the cable between engine control module (ECM) terminal #A68 (#B8) and heated oxygen sensor (HO2S) terminal #4. Check for an open-circuit. Check for a short-circuit to ground.

Try a new heated oxygen sensor (HO2S) if the above fault-tracing does not remedy the fault.

Remedy as necessary.

Other information

1. «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
2. «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S32701656862012042500000)
3. «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466646-S20260073692012042500000)