Engine Control Module (ECM) Diagnostic Trouble Codes - 2 of 9: Wiring Volvo V50 I рестайлинг

CHECKING THE COMPONENTS AND WIRING

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-466654-S07082174892012042500000)

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-466654-S08802181592012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation.

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. Check for contact resistance and oxidation in the terminals.

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-466654-S42660503012012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation.

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. Check for contact resistance and oxidation in the terminals.

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-466654-S16618627412012042500000)

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-466654-S40830555022012042500000)

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-466654-S39370100582012042500000)

Note. Diagnostic trouble code (DTC) may be caused by a damaged fuse.

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-466654-S08385690802012042500000)

Note. Diagnostic trouble code (DTC) may be caused by a damaged fuse.

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-466654-S32046062532012042500000)

Check the exhaust system for air leakage.

If no fault is discovered, try using a new rear heated oxygen sensor (HO2S), as a damaged rear heated oxygen sensor (HO2S) can cause a diagnostic trouble code (DTC) to be stored.

Remedy as necessary

Other information

1. see «AIR LEAKAGE EXHAUST SYSTEM, CHECK»(ref-479169-S27670670192012061200000)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S23178332682012042500000)

Check the following cables for a short-circuit to each other.

1. Engine control module (ECM) #A90 (#B30) and lambda probe #4.
2. Engine control module (ECM) terminal #A49 (#A49) and heated oxygen sensor (HO2S) terminal #2
3. Heated oxygen sensor (HO2S) terminal #1 and the system relay.

Check the following cables for a short-circuit to each other.

1. Engine control module (ECM) #A95 (#B35) and lambda probe #3.
2. Engine control module (ECM) terminal #A49 (#A49) and heated oxygen sensor (HO2S) terminal #2
3. Heated oxygen sensor (HO2S) terminal #1 and the system relay.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Scheme 45

1. Continue Refer to «VERIFICATION»(ref-466654-S22541761852012042500000)

Check the following cables for a short-circuit to each other.

1. Engine control module (ECM) terminal #A92 (#B32) and heated oxygen sensor (HO2S) terminal #4
2. Engine control module (ECM) terminal #A49 (#A49) and heated oxygen sensor (HO2S) terminal #2
3. Heated oxygen sensor (HO2S) terminal #1 and the system relay.

Check the following cables for a short-circuit to each other.

1. Engine control module (ECM) terminal #A43 (#B43) and heated oxygen sensor (HO2S) terminal #3
2. Engine control module (ECM) terminal #A49 (#A49) and heated oxygen sensor (HO2S) terminal #2
3. Heated oxygen sensor (HO2S) terminal #1 and the system relay.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S24055874982012042500000)

Check the rear heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation.

Check the cable between engine control module (ECM) terminal #A92 (#B32) and heated oxygen sensor (HO2S) terminal #4. Check for an open-circuit.

Check the cable between engine control module (ECM) terminal #A43 (#A43) and heated oxygen sensor (HO2S) terminal #3. 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 «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S24954554732012042500000)

Check the rear heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation.

Check the cable for an open-circuit.

Take readings between

1. Engine control module (ECM) #A90 (#B30) and lambda probe #4.
2. Engine control module (ECM) #A95 (#B35) and lambda probe #3.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Scheme 46

Scheme 47

1. Continue Refer to «VERIFICATION»(ref-466654-S00569129172012042500000)

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

Take readings between

1. Engine control module (ECM) #A90 (#B30) and lambda probe #4.
2. Engine control module (ECM) #A95 (#B35) and lambda probe #3.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S30098492542012042500000)

Check the cable between engine control module (ECM) terminal #A92 (#B32) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to supply voltage.

Check the cable between engine control module (ECM) terminal #A43 (#A43) and heated oxygen sensor (HO2S) terminal #3. 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 «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S32423170392012042500000)

Check the cable between engine control module (ECM) terminal #A92 (#B32) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to ground.

Check the cable between engine control module (ECM) terminal #A43 (#A43) and heated oxygen sensor (HO2S) terminal #3. 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 «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S12811928232012042500000)

Check the cable for short-circuit to ground.

Take readings between

1. Engine control module (ECM) #A90 (#B30) and lambda probe #4.
2. Engine control module (ECM) #A95 (#B35) and lambda probe #3.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S03518598582012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation.

Check the resistance of the heated oxygen sensor (HO2S) between terminals #1 and #2.

Check the signal cable between heated oxygen sensor (HO2S) terminal #2 and control module terminal #A49 (#A49). Check the power supply between system relay terminal #3 and heated oxygen sensor (HO2S) 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) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000)
4. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S00637793592012042500000)

Check the resistance of the heated oxygen sensor (HO2S) between terminals #1 and #2.

Check signal cable terminal #1. Check for a short-circuit to supply voltage.

Check the signal cable between heated oxygen sensor (HO2S) terminal #2 and control module terminal #A49 (#A49). 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-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000)
4. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S16169124142012042500000)

Check the resistance of the heated oxygen sensor (HO2S) between terminals #1 and #2.

Check signal cable terminal #1. Check for a short-circuit to ground.

Check the signal cable between heated oxygen sensor (HO2S) terminal #2 and control module terminal #A49 (#A49). 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) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000)
4. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S22537243732012042500000)

CHECKING THE COMPONENT AND WIRING

Check the connector for the injector that relates to the diagnostic trouble code (DTC). Check for contact resistance. Check for oxidation.

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

Check the power supply cable between the system relay and terminal #1 in the injector that relates to the diagnostic trouble code (DTC). Check for an open-circuit.

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

Check between

1. Engine control module (ECM) terminal #A84 (#B24) and injector terminal #2 (ECM-2300)
2. Engine control module (ECM) terminal #A83 (#B23) and injector terminal #2 (ECM-2310)
3. Engine control module (ECM) terminal #A82 (#B22) and injector terminal #2 (ECM-2320)
4. Engine control module (ECM) terminal #A81 (#B21) and injector terminal #2 (ECM-2330)
5. Engine control module (ECM) terminal #A80 (#B20) and injector terminal #2 (ECM-2340).

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15475582172012042500000)
3. see «COMPONENT SPECIFICATION»(ref-466592-S17814850062012042500000)
4. see «FUEL INJECTOR»(ref-466648-S15230491562012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Scheme 48

1. Continue Refer to «VERIFICATION»(ref-466654-S08101085102012042500000)

Check the connector for the injector that relates to the diagnostic trouble code (DTC). Check for contact resistance. Check for oxidation.

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

Check the power supply cable between the system relay and terminal #1 in the injector that relates to the diagnostic trouble code (DTC). Check for an open-circuit.

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

Check between

1. Engine control module (ECM) terminal #A84 (#B24) and injector terminal #2 (ECM-2300)
2. Engine control module (ECM) terminal #A83 (#B23) and injector terminal #2 (ECM-2310)
3. Engine control module (ECM) terminal #A82 (#B22) and injector terminal #2 (ECM-2320)
4. Engine control module (ECM) terminal #A81 (#B21) and injector terminal #2 (ECM-2330)
5. Engine control module (ECM) terminal #A80 (#B20) and injector terminal #2 (ECM-2340).

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S26583508152012042500000)
3. see «LOCATION OF COMPONENTS, ENGINE COMPARTMENT»(ref-466647-S05486220892012042500000)
4. see «FUEL INJECTOR»(ref-466648-S15230491562012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S37227995342012042500000)

Check the heated oxygen sensor (HO2S) pre-heating circuit. Measure the resistance between terminals #3 and #4 in the probe connector.

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «COMPONENT SPECIFICATIONS»(ref-466592-S02390340522012042500000)
4. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
5. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

Scheme 49

1. Continue Refer to «VERIFICATION»(ref-466654-S11570066472012042500000)

CHECKING COMPONENTS AND WIRING

1. Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation. Check the wiring for short-circuiting to each other. Check between: Engine control module (ECM) #A92 (#B32) and lambda probe #2 (wiring for calibration current). Engine control module (ECM) #A68 (#B8) and lambda probe #6 (wiring for pump current). Check the cable for an open-circuit. Check between: Engine control module (ECM) #A91 (#B31) and lambda probe #5. Engine control module (ECM) #A92 (#B32) and lambda probe #2 (wiring for calibration current). Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S38910883672012042500000)

1. Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation. Check the cable for calibration current between heated oxygen sensor (HO2S) terminal #2 and engine control module (ECM) terminal #A94 (#B34). Check the cable for pump current between heated oxygen sensor (HO2S) terminal #6 and engine control module (ECM) terminal #A70 (#B10). Check for a short-circuit to each other. Check the cable for an open-circuit. Check between: Heated oxygen sensor (HO2S) terminal #5 and engine control module (ECM) terminal #A93 (#B33) Heated oxygen sensor (HO2S) terminal #2 and engine control module (ECM) terminal #A94 (#B34). Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000) see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S15414118802012042500000)

Check the power cable between the engine control module (ECM) and heated oxygen sensor (HO2S) connector terminal #3. Check for a short-circuit to the other signal cables for the heated oxygen sensor (HO2S).

Check the ground lead between engine control module (ECM) terminals #A73 (#B13) and heated oxygen sensor (HO2S) connector terminal #4. Check for a short-circuit to the other signal cables for the heated oxygen sensor (HO2S).

Try a new heated oxygen sensor (HO2S) if the wiring is OK.

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S08004766322012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation.

Check the power supply between the system relay and heated oxygen sensor (HO2S) terminal #3. Check for an open-circuit.

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S29498920082012042500000)

Check the signal cable between heated oxygen sensor (HO2S) #3 and the system relay. Check for a short-circuit to supply voltage.

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S18564434802012042500000)

Check the signal cable between heated oxygen sensor (HO2S) terminal #3 and the system relay. Check for a short-circuit to ground

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S36545269082012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation

Check the cable between engine control module (ECM) terminal #A94 (#B34) and heated oxygen sensor (HO2S) terminal #2. Check for an open-circuit.

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S13413832592012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation

Check the cable for an open-circuit.

Check between

1. Engine control module (ECM) #A92 (#B32) and lambda probe #2 (wiring for calibration current).

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S16459296802012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation.

Check the cable between engine control module (ECM) terminal #A94 (#B34) and heated oxygen sensor (HO2S) terminal #2. Check for an open-circuit.

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S08013784292012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation.

Check the cable for an open-circuit.

Check between

1. Engine control module (ECM) #A92 (#B32) and lambda probe #2 (wiring for calibration current).

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S14473810712012042500000)

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

Check between

1. The system relay and heated oxygen sensor (HO2S) terminal #3
2. Engine control module (ECM) terminal #A73 (#B13) and heated oxygen sensor (HO2S) terminal #4.

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S04557688482012042500000)

Check the cable for a short-circuit to ground.

Check between

1. The system relay and heated oxygen sensor (HO2S) terminal #3
2. Engine control module (ECM) terminal #A73 (#B13) and heated oxygen sensor (HO2S) terminal #4.

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S18276451072012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance. Check for an open-circuit. Check for oxidation.

Check the cable between engine control module (ECM) terminal #A69 (#B9) and heated oxygen sensor (HO2S) terminal #1. Check for an open-circuit

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S24191452852012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance. Check for an open-circuit. Check for oxidation.

Check the cable for an open-circuit.

Check between

1. Engine control module (ECM) #A67 (#B7) and lambda probe #1.

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S12927878702012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance. Check for an open-circuit. Check for oxidation.

Check the cable between engine control module (ECM) terminal #A93 (#B33) and heated oxygen sensor (HO2S) terminal #5. Check for an open-circuit.

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S40274363672012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance. Check for an open-circuit. Check for oxidation.

Check the cable for an open-circuit.

Check between

1. Engine control module (ECM) #A91 (#B31) and lambda probe #5.

Note. If possible, measure from the rear of the affected connectors in order to minimize any damage and future loose connections.

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

Remedy as necessary.

Other information

1. see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000)
2. see «SIGNAL SPECIFICATION»(ref-466592-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
3. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S31251001622012042500000)

Check the heated oxygen sensor (HO2S) connector. Check for contact resistance. Check for an open-circuit. Check for oxidation.

Check that the heated oxygen sensor (HO2S) is correctly installed in the exhaust system.

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-S22657918422012042500000) (2005), or «SIGNAL SPECIFICATION»(ref-466592-S15491428272012042500000) (2006-2007)
2. see «OXYGEN SENSOR (CATALYST MONITOR SENSOR)»(ref-466651-S03920303172012042500000)
3. see «CHECKING WIRING AND TERMINALS»(ref-466589-S05251896242012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S26118919992012042500000)

Check the cable between engine control module (ECM) terminal #A94 (#B34) and fuel pressure 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 «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

Scheme 50

1. Continue Refer to «VERIFICATION»(ref-466654-S28819428082012042500000)

Check the cable between engine control module (ECM) terminal #A94 (#B34) and fuel pressure 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 «PRESSURE SENSOR, FUEL RAIL (FRP)»(ref-466594-S18866848472012042500000)
4. see «CHECKING WIRING AND TERMINALS»(ref-466589-S38415998382012042500000)

1. Continue Refer to «VERIFICATION»(ref-466654-S21017733652012042500000)

Check the cable between engine control module (ECM) terminal #A94 (#B34) 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-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-466654-S32798078152012042500000)

Check the cable between engine control module (ECM) terminal #A94 (#B34) 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-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-466654-S41465224942012042500000)

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 supply voltage. 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-466654-S00720318502012042500000)

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 supply voltage. 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-466654-S13934882162012042500000)