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Engine Control Module (ECM) Diagnostic Trouble Codes - 2 of 13: Wiring Volvo XC90 I

Testing & Diagnostics 8 illustrations ~7486 words

CHECKING THE COMPONENTS AND WIRING

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

  1. Engine control module (ECM) terminal #A61 (#B1) and heated oxygen sensor (HO2S) terminal #4
  2. Engine control module (ECM) terminal #A6 (#A6) 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 #A62 (#B2) and heated oxygen sensor (HO2S) terminal #3
  2. Engine control module (ECM) terminal #A6 (#A6) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

Scheme 87

Scheme 87
Scheme 87

Scheme 88

Scheme 88
Scheme 88
  1. Continue Refer to «VERIFICATION»(ref-476756-S36625355282012060500000)

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

Check the cable between engine control module (ECM) terminal #A61 (#B1) and heated oxygen sensor (HO2S) terminal #4. Check for an open-circuit.

Check the cable between engine control module (ECM) terminal #A62 (#B2) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S35324096782012060500000)

Check the cable between engine control module (ECM) terminal #A61 (#B1) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to supply voltage.

Check the cable between engine control module (ECM) terminal #A62 (#B2) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S00872946132012060500000)

Check the cable between engine control module (ECM) terminal #A61 (#B1) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to ground.

Check the cable between engine control module (ECM) terminal #A62 (#B2) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S06646043442012060500000)

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 #A6 (#A6).

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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For resistance values: «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  7. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  8. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  9. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S42457481432012060500000)

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 #A6 (#A6). Check for a short-circuit to supply voltage.

Remedy as necessary.

Other information

  1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For resistance values: «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  7. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  8. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  9. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S04076071902012060500000)

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 #A6 (#A6). Check for a short-circuit to ground.

Remedy as necessary.

Other information

  1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For resistance values: «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  7. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  8. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  9. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S21607453982012060500000)

Visually check that the rear heated oxygen sensors (HO2S) have not been mounted in the wrong bank on banks 1 and 2.

Read off the voltage of the probe on the rear heated oxygen sensor (HO2S) for bank 1.

Read off the voltage of the probe on the rear heated oxygen sensor (HO2S) for bank 2.

HINT: If the voltage is constantly close to 0 V on one bank and 1 V on the other bank, or vice-versa, the rear heated oxygen sensors (HO2S) have been switched.

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

Remedy as necessary.

Other information

  1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S03831335712012060500000)

CHECKING WIRING AND CONNECTORS

Check the injector connector. Check for contact resistance and oxidation. Check for loose connections.

Check the cable between injector terminal 2 and control module

  1. terminal #A16 (#A16) (ECM 2310)
  2. terminal #A34 (#A34) (ECM 2320)
  3. terminal #A15 (#A15) (ECM 2330)
  4. terminal #A33(#A33) (ECM 2340)
  5. terminal #A14 (#A14) (ECM 2350).

Check the power supply between system relay terminal 3 and injector terminal 1. Check for an for an intermittent open-circuit.

Other information

  1. To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For B5xx4T, see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S12739566552012060500000)
  3. For B6xx4T, see «INJECTOR / PULSATION DAMPER, REPLACING»(ref-476751-S42918859582012060500000) .
  4. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  5. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  6. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .

Scheme 89

Scheme 89
Scheme 89

Scheme 90

Scheme 90
Scheme 90
  1. Continue Refer to «INFORMATION»(ref-476756-S27146444072012060500000)

Check the injector connector. Check for contact resistance and oxidation. Check for loose connections.

Check the cable between injector terminal 2 and control module

  1. terminal #A16 (#A16) (ECM 2310)
  2. terminal #A15 (#A15) (ECM 2320)
  3. terminal #A33(#A33) (ECM 2330)
  4. terminal #A32 (#A32) (ECM 2340)
  5. terminal #A34 (#A34) (ECM 2350)
  6. terminal #A14 (#A14) (ECM 2360).

Check the power supply between system relay terminal 3 and injector terminal 1. Check for an for an intermittent open-circuit.

Other information

  1. To access or replace the engine control module (ECM), see «ENGINE CONTROL MODULE (ECM), REPLACING»(ref-476695-S16000409902012060500000)
  2. For B5xx4T, see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S12739566552012060500000)
  3. For B6xx4T, see «INJECTOR / PULSATION DAMPER, REPLACING»(ref-476751-S42918859582012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .
  1. Continue Refer to «INFORMATION»(ref-476756-S42205581232012060500000)

CHECKING COMPONENTS AND WIRING

Check the resistance of the injector between terminals 1 and 2.

Check the cable between injector terminal 2 and control module

  1. terminal #A16 (#A16) (ECM 2310)
  2. terminal #A34 (#A34) (ECM 2320)
  3. terminal #A15 (#A15) (ECM 2330)
  4. terminal #A33(#A33) (ECM 2340)
  5. terminal #A14 (#A14) (ECM 2350).

Check the power supply between system relay terminal 3 and injector terminal 1. Check for an open-circuit.

Remedy as necessary.

Other information

  1. To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For B5xx4T, see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S12739566552012060500000)
  3. For B6xx4T, see «INJECTOR / PULSATION DAMPER, REPLACING»(ref-476751-S42918859582012060500000) .
  4. For resistance values, see «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  5. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  6. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  1. Continue Refer to «VERIFICATION»(ref-476756-S09299489292012060500000)

Check the resistance of the injector between terminals 1 and 2.

Check the cable between injector terminal 2 and control module

  1. terminal #A16 (#A16) (ECM 2310)
  2. terminal #A15 (#A15) (ECM 2320)
  3. terminal #A33(#A33) (ECM 2330)
  4. terminal #A32 (#A32) (ECM 2340)
  5. terminal #A34 (#A34) (ECM 2350)
  6. terminal #A14 (#A14) (ECM 2360).

Check the power supply between system relay terminal 3 and injector terminal 1. Check for an open-circuit.

Remedy as necessary.

Other information

  1. For B5xx4T, see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S12739566552012060500000)
  2. For B6xx4T, see «INJECTOR / PULSATION DAMPER, REPLACING»(ref-476751-S42918859582012060500000) .
  3. For resistance values, see «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .
  1. Continue Refer to «VERIFICATION»(ref-476756-S38918353802012060500000)

CHECKING THE WIRING

Check the cable between injector terminal 2 and control module

  1. terminal #A16 (#A16) (ECM 2310)
  2. terminal #A34 (#A34) (ECM 2320)
  3. terminal #A15 (#A15) (ECM 2330)
  4. terminal #A33(#A33) (ECM 2340)
  5. terminal #A14 (#A14) (ECM 2350).

Check for an intermittent short-circuit to supply voltage.

Other information

  1. To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For B5xx4T, see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S12739566552012060500000)
  3. For B6xx4T, see «INJECTOR / PULSATION DAMPER, REPLACING»(ref-476751-S42918859582012060500000) .
  4. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  5. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  6. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .

Scheme 91

Scheme 91
Scheme 91
  1. Continue Refer to «INFORMATION»(ref-476756-S25298399622012060500000)

Check the cable between injector terminal 2 and control module

  1. terminal #A16 (#A16) (ECM 2310)
  2. terminal #A15 (#A15) (ECM 2320)
  3. terminal #A33(#A33) (ECM 2330)
  4. terminal #A32 (#A32) (ECM 2340)
  5. terminal #A34 (#A34) (ECM 2350)
  6. terminal #A14 (#A14) (ECM 2360).

Check for an intermittent short-circuit to supply voltage.

Other information

  1. To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For B5xx4T, see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S12739566552012060500000)
  3. For B6xx4T, see «INJECTOR / PULSATION DAMPER, REPLACING»(ref-476751-S42918859582012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .
  1. Continue Refer to «INFORMATION»(ref-476756-S39586925542012060500000)

Check the resistance of the injector between terminals 1 and 2.

Check the cable between injector terminal 2 and control module

  1. terminal #A16 (#A16) (ECM 2310)
  2. terminal #A34 (#A34) (ECM 2320)
  3. terminal #A15 (#A15) (ECM 2330)
  4. terminal #A33(#A33) (ECM 2340)
  5. terminal #A14 (#A14) (ECM 2350).

Check for a short-circuit to supply voltage.

HINT: Use a test lamp with at least a 3 W bulb to determine whether the cable is short-circuited to supply voltage.

Remedy as necessary.

Other information

  1. To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For B5xx4T, see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S12739566552012060500000)
  3. For B6xx4T, see «INJECTOR / PULSATION DAMPER, REPLACING»(ref-476751-S42918859582012060500000) .
  4. For resistance values, see «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  5. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  6. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  1. Continue Refer to «VERIFICATION»(ref-476756-S29795760932012060500000)

Check the resistance of the injector between terminals 1 and 2.

Check the cable between injector terminal 2 and control module

  1. terminal #A16 (#A16) (ECM 2310)
  2. terminal #A15 (#A15) (ECM 2320)
  3. terminal #A33(#A33) (ECM 2330)
  4. terminal #A32 (#A32) (ECM 2340)
  5. terminal #A34 (#A34) (ECM 2350)
  6. terminal #A14 (#A14) (ECM 2360).

Check for a short-circuit to supply voltage.

HINT: Use a test lamp with at least a 3 W bulb to determine whether the cable is short-circuited to supply voltage.

Remedy as necessary.

Other information

  1. To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For B5xx4T, see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S12739566552012060500000)
  3. For B6xx4T, see «INJECTOR / PULSATION DAMPER, REPLACING»(ref-476751-S42918859582012060500000) .
  4. For resistance values, see «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  5. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  6. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  7. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S03714541212012060500000)

Check the cable between injector terminal 2 and control module

  1. terminal #A16 (#A16) (ECM 2310)
  2. terminal #A34 (#A34) (ECM 2320)
  3. terminal #A15 (#A15) (ECM 2330)
  4. terminal #A33(#A33) (ECM 2340)
  5. terminal #A14 (#A14) (ECM 2350).

Check for an intermittent short-circuit to ground.

Other information

  1. To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For B5xx4T, see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S12739566552012060500000)
  3. For B6xx4T, see «INJECTOR / PULSATION DAMPER, REPLACING»(ref-476751-S42918859582012060500000) .
  4. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  5. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  6. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .
  1. Continue Refer to «INFORMATION»(ref-476756-S39110376022012060500000)

Check the cable between injector terminal 2 and control module

  1. terminal #A16 (ECM 2310)
  2. terminal #A15 (ECM 2320)
  3. terminal #A33 (ECM 2330)
  4. terminal #A32 (ECM 2340)
  5. terminal #A34 (ECM 2350)
  6. terminal #A14 (ECM 2360).

Check for an intermittent short-circuit to ground.

Other information

  1. To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For B5xx4T, see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S12739566552012060500000)
  3. For B6xx4T, see «INJECTOR / PULSATION DAMPER, REPLACING»(ref-476751-S42918859582012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .
  1. Continue Refer to «INFORMATION»(ref-476756-S16136469142012060500000)

Check the resistance of the injector between terminals 1 and 2.

Check the cable between injector terminal 2 and control module

  1. terminal #A16 (#A16) (ECM 2310)
  2. terminal #A34 (#A34) (ECM 2320)
  3. terminal #A15 (#A15) (ECM 2330)
  4. terminal #A33(#A33) (ECM 2340)
  5. terminal #A14 (#A14) (ECM 2350).

Check for a short-circuit to ground.

Remedy as necessary.

Other information

  1. To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For B5xx4T, see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S12739566552012060500000)
  3. For B6xx4T, see «INJECTOR / PULSATION DAMPER, REPLACING»(ref-476751-S42918859582012060500000) .
  4. For resistance values, see «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  5. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  6. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  7. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .
  1. Continue Refer to «VERIFICATION»(ref-476756-S17794877142012060500000)

Check the resistance of the injector between terminals 1 and 2.

Check the cable between injector terminal 2 and control module

  1. terminal #A16 (#A16) (ECM 2310)
  2. terminal #A15 (#A15) (ECM 2320)
  3. terminal #A33(#A33) (ECM 2330)
  4. terminal #A32 (#A32) (ECM 2340)
  5. terminal #A34 (#A34) (ECM 2350)
  6. terminal #A14 (#A14) (ECM 2360).

Check for a short-circuit to ground.

Remedy as necessary.

Other information

  1. To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For B5xx4T, see «INJECTOR/PULSE DAMPER, REPLACEMENT»(ref-476751-S12739566552012060500000)
  3. For B6xx4T, see «INJECTOR / PULSATION DAMPER, REPLACING»(ref-476751-S42918859582012060500000) .
  4. For resistance values, see «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  5. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  6. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  1. Continue Refer to «VERIFICATION»(ref-476756-S12529057302012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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 «CHECKING FOR AIR LEAKAGE IN THE EXHAUST SYSTEM»(ref-494824-S07275287112012081600000)
  2. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  3. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  4. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S23064384312012060500000)

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

  1. Engine control module (ECM) terminal #A10 (#A10) and heated oxygen sensor (HO2S) terminal #4
  2. Engine control module (ECM) terminal #A8 (#A8) 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 #A11 (#A11) and heated oxygen sensor (HO2S) terminal #3
  2. Engine control module (ECM) terminal #A8 (#A8) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S39064654342012060500000)

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

Check the cable between engine control module (ECM) terminal #A10 (#A10) and heated oxygen sensor (HO2S) terminal #4. Check for an open-circuit.

Check the cable between engine control module (ECM) terminal #A11 (#A11) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S07446686112012060500000)

Check the cable between engine control module (ECM) terminal #A10 (#A10) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to supply voltage.

Check the cable between engine control module (ECM) terminal #A11 (#A11) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S42400316752012060500000)

Check the cable between engine control module (ECM) terminal #A10 (#A10) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to ground.

Check the cable between engine control module (ECM) terminal #A11 (#A11) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S41475503362012060500000)

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 engine control module (ECM) terminal #A8 (#A8). 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For resistance values, see: «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  7. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  8. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  9. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .
  1. Continue Refer to «VERIFICATION»(ref-476756-S28766846642012060500000)

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 engine control module (ECM) terminal #A8 (#A8). Check for a short-circuit to supply voltage.

Remedy as necessary.

Other information

  1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For resistance values: «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  7. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  8. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  9. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

Scheme 92

Scheme 92
Scheme 92
  1. Continue Refer to «VERIFICATION»(ref-476756-S39564123662012060500000)

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 engine control module (ECM) terminal #A8 (#A8). Check for a short-circuit to ground.

Remedy as necessary.

Other information

  1. see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For resistance values: «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  7. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  8. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  9. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S01324255502012060500000)

CHECKING COMPONENT AND WIRING

Check the cable between engine control module (ECM) #B45 (#B55) and central electronic module #14B (#A34) for an intermittent short-circuit to ground according to SHORT-CIRCUIT TO GROUND, INTERMITTENT FAULTS and for an intermittent open-circuit according to OPEN-CIRCUIT, INTERMITTENT FAULTS .

Other information

  1. Connecting the breakout box/accessing the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000) .
  2. To connect the central electronic module breakout box, see «CONNECTING THE BREAKOUT BOX»(ref-476703-S35775802292012060500000) .
  3. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  4. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  5. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  6. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .

Scheme 93

Scheme 93
Scheme 93
  1. Continue Refer to «INFORMATION»(ref-476756-S40640707292012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For resistance values: «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  7. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  8. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  9. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)

Scheme 94

Scheme 94
Scheme 94
  1. Continue Refer to «VERIFICATION»(ref-476756-S29890520022012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.
  1. Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation. Check the cable for calibration current between engine control module (ECM) terminal #A28 (#A28) and heated oxygen sensor (HO2S) terminal #2. Check the cable for pump current between heated oxygen sensor (HO2S) terminal #6 and engine control module (ECM) terminal #A24 (#A24). 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 #A42 (#A42) Heated oxygen sensor (HO2S) terminal #2 and engine control module (ECM) terminal #A28 (#A28). Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000) For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000) For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) . For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000) For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) . For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000) For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) . see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S02816587782012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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 #A18 (#A18) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S02015181332012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

Check the signal cable between heated oxygen sensor (HO2S) #3 and the system relay. 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S01210465592012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S24022581102012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S03634889162012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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

Check the cable between engine control module (ECM) terminal #A28 (#A28) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S04547971932012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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

Check the cable between engine control module (ECM) terminal #A28 (#A28) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S38368096652012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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 #A18 (#A18) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S21719054932012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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 #A18 (#A18) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S32724375392012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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 #A41 (#A41) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S34265319532012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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 #A42 (#A42) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S04768238642012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  2. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  3. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  4. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  5. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  6. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  7. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S19037272112012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For resistance values: «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000)
  7. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  8. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  9. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S07372589182012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.
  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 #A69 (#B9). Check the cable for pump current between heated oxygen sensor (HO2S) terminal #6 and engine control module (ECM) terminal #A25 (#A25). 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 #A44 (#A44) Heated oxygen sensor (HO2S) terminal #2 and engine control module (ECM) terminal #A69 (#B9). Remedy as necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000) For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000) For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) . For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000) For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) . For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000) For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) . see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S33345974532012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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 #A70 (#B10) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S23835419142012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

Check the signal cable between heated oxygen sensor (HO2S) #3 and the system relay. 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S03706435822012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S02589454882012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S01893954292012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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

Check the cable between engine control module (ECM) terminal #A69 (#B9) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S29593577582012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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

Check the cable between engine control module (ECM) terminal #A69 (#B9) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S12334879592012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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 #A70 (#B10) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S34943113942012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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 #A70 (#B10) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S25511143132012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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 #A43 (#A43) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S24408369682012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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 #A44 (#A44) 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-476691-S38062545372012060500000)
  2. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  3. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  4. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  5. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  6. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  7. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  8. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .
  1. Continue Refer to «VERIFICATION»(ref-476756-S26910596172012060500000)
CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

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. For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000)
  2. For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  3. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  4. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  5. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  6. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  7. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476756-S25484749312012060500000)

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