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Engine Control Module (ECM) Diagnostic Trouble Codes - 4 of 13: Other Volvo XC90 I

Testing & Diagnostics 13 illustrations ~11878 words

CHECKING THE FUEL PRESSURE SENSOR

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by comparing the fuel pressure sensor signal (displayed in VIDA (Volvo scan tool)) with the actual fuel pressure (displayed on a manometer connected to the wiring for the fuel injection system). This method assumes that the manometer for measuring fuel pressure is correctly calibrated.

Scheme 163

Scheme 163: CHECKING THE FUEL PRESSURE SENSOR
Scheme 163: CHECKING THE FUEL PRESSURE SENSOR

Scheme 164

Scheme 164
Scheme 164
  1. To connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
  2. Run the engine to operating temperature. Allow the engine to idle
  3. air conditioning (A/C) off
  4. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA (Volvo scan tool) are the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

  1. YES Refer to «CHECKING REGULATION OF THE FUEL PRESSURE»(ref-476761-S22821020962012060500000)
  2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476761-S04201414482012060500000)

CHECKING REGULATION OF THE FUEL PRESSURE

WARNINGIn this test, the pressure in the fuel injection system will reach approximately 650 kPa. Disconnect the pressure gauge, as it is not intended to be used at such high pressures.

HINT: The method described below is used to check the control of the pressure in the fuel injection system by activating the quick test for the fuel pump (FP). If the pressure gauge for pressures up to 650 kPa is connected, the fuel pressure sensor can also be checked during this test.

Note. In this test, the complete flow capacity of the system is not tested.

Scheme 165

Scheme 165
Scheme 165
  1. Disconnect the manometer unless it is adapted for pressures higher than 650 kPa
  2. Run the engine to operating temperature. Allow the engine to idle
  3. air conditioning (A/C) off
  4. Read off the fuel pressure and the fuel pressure desired value
  5. Start the quick test when the engine is running at idling. During the course of the quick test, the control module will steer the pressure to different target values in different stages (400, 500, 600 and finally 700 kPa), after which the pressure will be decreased in stages to the same pressure. Each stage lasts for approximately 5 seconds. NOTE: Because the by-pass valve in the fuel pump (FP) will be open at approximately 650 kPa, the pressure will not go higher than this. HINT: The illustration to the left shows an example of normal regulation. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The lower digital display and the graphic display (yellow font color) indicate the control module target value for the absolute fuel pressure The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check that the value for absolute fuel pressure is the same as the target value for absolute fuel pressure. If the values are not the same, this indicates a fault in the pressure regulation. The values may differ during the quick test when the target value is changed. This is due to sluggishness in the fuel regulation and is normal. In some cases, it can take up to 5 seconds before the fuel pressure reaches the target value for the fuel pressure.

Is the pressure regulation correct?

  1. YES Refer to «CHECKING COMPONENTS»(ref-476761-S22009355402012060500000)
  2. NO Refer to «CHECKING COMPONENTS»(ref-476761-S02413091432012060500000)

CHECKING COMPONENTS

HINT: The fault may be intermittent or be due to the flow capacity in the system being too low.

Check that the fuel level in the tank is not too low (almost no fuel).

Check the fuel lines between the fuel pump (FP) and the fuel rail for the injectors for leakage.

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

Check the pump control module connector. Check for contact resistance and oxidation.

Check the fuel lines and fuel filter for blockage.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

Other information

  1. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  2. To connect the breakout box, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  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) .
  7. To access or replace the fuel pump (FP), see «LEVEL SENSOR, FUEL TANK/FUEL PUMP, REPLACEMENT»(ref-494763-S07769673732012081600000)
  8. To access or replace the pump control module, see «CONTROL MODULE FUEL PUMP (FP), REPLACING»(ref-494826-S05872105882012081600000) .
  1. Continue Refer to «INFORMATION»(ref-476761-S32411328512012060500000)

Check that the fuel level in the tank is not too low (almost no fuel).

Check the connectors between the pump control module and the fuel pump (FP). Check for contact resistance and oxidation.

Check the fuel lines and fuel filter for blockage.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

HINT: The diagnostic trouble code (DTC) can also be caused by a defective pump control module.

Other information

  1. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000)
  2. To access or replace the fuel pump (FP), see «LEVEL SENSOR, FUEL TANK/FUEL PUMP, REPLACEMENT»(ref-494763-S07769673732012081600000)
  3. To access or replace the pump control module, see «CONTROL MODULE FUEL PUMP (FP), REPLACING»(ref-494826-S05872105882012081600000) .
  1. Continue Refer to «VERIFICATION»(ref-476761-S15721378582012060500000)

FAULT-TRACING INFORMATION

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

VERIFICATION

HINT: After carrying out the repair, check that the fault has been remedied.

Scheme 166

Scheme 166: VERIFICATION
Scheme 166: VERIFICATION
  1. Run the engine to operating temperature. Allow the engine to idle
  2. air conditioning (A/C) off
  3. Read off the fuel pressure and the fuel pressure desired value
  4. Start the quick test when the engine is running at idling. During the course of the quick test, the control module will steer the pressure to different target values in different stages (400, 500, 600 and finally 700 kPa), after which the pressure will be decreased in stages to the same pressure. Each stage lasts for approximately 5 seconds. NOTE: Because the by-pass valve in the fuel pump (FP) will be open at approximately 650 kPa, the pressure will not go higher than this. HINT: The illustration to the left shows an example of normal regulation. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The lower digital display and the graphic display (yellow font color) indicate the control module target value for the absolute fuel pressure The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check that the value for absolute fuel pressure is the same as the target value for absolute fuel pressure. If the values are not the same, this indicates a fault in the pressure regulation. The values may differ during the quick test when the target value is changed. This is due to sluggishness in the fuel regulation and is normal. In some cases, it can take up to 5 seconds before the fuel pressure reaches the target value for the fuel pressure.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S10173251552012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Connect the manometer, see «FUEL PRESSURE GAUGE»(ref-494826-S30503697792012081600000)
  2. Run the engine to operating temperature. Allow the engine to idle
  3. air conditioning (A/C) off
  4. Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA (Volvo scan tool) are the same. If the values are different, this indicates incorrect function.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S10173251552012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Scheme 167

Scheme 167
Scheme 167
  1. Ignition off
  2. Reinstall the components, reconnect the connectors etc.
  3. Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnosis is underway.

Is NOT DETECTED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S05320147532012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reinstall the components, reconnect the connectors etc.
  3. Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnosis is underway.

Is NOT DETECTED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S41427147662012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reinstall the components, reconnect the connectors etc.
  3. Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnosis is underway.

Is NOT DETECTED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S35174092242012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Control module previously registered a fault. The fault is now no longer present.

  1. Continue Refer to «INFORMATION»(ref-476761-S03399841852012060500000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reinstall the components, reconnect the connectors etc.
  3. Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnosis is underway.

Is NOT DETECTED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S06728455812012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

CHECKING THE STATUS

  1. Start the engine and run it to normal operating temperature
  2. Read off the fuel pump (FP) load. Check whether the fault is permanent or intermittent by checking the value of 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 35% (±5%) with the engine idling at operating temperature. The fault is permanent if the signal is incorrect or the engine will not start. The fault is intermittent if the signal is correct.
  1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476761-S22650400172012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Reinstall the connectors, components etc.
  2. Start the engine and run it to normal operating temperature
  3. Read off the fuel pump (FP) load. Check that the engine starts and that the signal is approximately 35% (±5%) when the engine is idling at operating temperature.

Is the function correct?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S38687747542012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

  1. Start the engine and run it to normal operating temperature
  2. Read off the fuel pump (FP) load. Check whether the fault is permanent or intermittent by checking the value of 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 35% (±5%) with the engine idling at operating temperature. The fault is permanent if the signal is incorrect or the engine will not start. The fault is intermittent if the signal is correct.
  1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476761-S19951368342012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Reinstall the connectors, components etc.
  2. Start the engine and run it to normal operating temperature
  3. Read off the fuel pump (FP) load. Check that the engine starts and that the signal is approximately 35% (±5%) when the engine is idling at operating temperature.

Is the function correct?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S03628931802012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

SIGNAL TOO HIGH/SIGNAL TOO LOW/SIGNAL MISSING (2005)

see SIGNAL TOO HIGH/SIGNAL TOO LOW/SIGNAL MISSING (2005)

  1. Start the engine and run it to normal operating temperature
  2. Read off the fuel pump (FP) load. Check whether the fault is permanent or intermittent by checking the value of 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 35% (±5%) with the engine idling at operating temperature. The fault is permanent if the signal is incorrect or the engine will not start. The fault is intermittent if the signal is correct.
  1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476761-S00156929632012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Reinstall the connectors, components etc.
  2. Start the engine and run it to normal operating temperature
  3. Read off the fuel pump (FP) load. Check that the engine starts and that the signal is approximately 35% (±5%) when the engine is idling at operating temperature.

Is the function correct?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S38844568502012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

see SIGNAL TOO HIGH/SIGNAL TOO LOW/SIGNAL MISSING (2005)

SIGNAL TOO HIGH/SIGNAL TOO LOW/SIGNAL MISSING (2006, 2007)

see SIGNAL TOO HIGH/SIGNAL TOO LOW/SIGNAL MISSING (2006, 2007)

see SIGNAL TOO HIGH/SIGNAL TOO LOW/SIGNAL MISSING (2005)

SIGNAL TOO HIGH/SIGNAL TOO LOW/SIGNAL MISSING (2006)

see SIGNAL TOO HIGH/SIGNAL TOO LOW/SIGNAL MISSING (2006)

see SIGNAL TOO HIGH/SIGNAL TOO LOW/SIGNAL MISSING (2005)

see SIGNAL TOO HIGH/SIGNAL TOO LOW/SIGNAL MISSING (2006, 2007)

see SIGNAL TOO HIGH/SIGNAL TOO LOW/SIGNAL MISSING (2005)

see SIGNAL TOO HIGH/SIGNAL TOO LOW/SIGNAL MISSING (2006)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Reinstall the connectors, components etc.
  2. Start the engine and run it to normal operating temperature
  3. Read off the fuel temperature sensor signal. Check that the signal is within its permitted range. The signal is measured in the fuel rail for the injectors.

Is the signal OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S28630865362012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA (Volvo scan tool) again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S23410105092012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

CHECKING THE CONNECTOR

CAUTIONDo not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.
  1. Ignition off
  2. Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
  3. Reinstall the components, reconnect the connectors etc.
  4. Start the engine. Allow the engine to idle. Read off the signal for the rear heated oxygen sensor (HO2S). NOTE: It may take up to approximately 3 minutes before fuel trim has begun and the signal can be read off. Check that the signal is within its permitted range. The signal must be free of interference and between 0.6 - 0.3 V. If the signal is now OK this indicates that the fault was caused by a poor connection in the connector. Other information: To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000) For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000) For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) . 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) . see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .

Is the signal OK?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476761-S25149471692012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA (Volvo scan tool) again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S10221143372012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA (Volvo scan tool) again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S38033340032012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA (Volvo scan tool) again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S20957210522012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

FAULT-TRACING

see FAULT-TRACING

  1. Ignition on. Check whether the fault is permanent or intermittent by reading off the signal from the fuel pressure sensor. Check that the signal is within its permitted range. The signal is measured in the fuel rail for the injectors. The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.
  1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476761-S04747254132012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Reinstall the connectors, components etc.
  2. Start the engine and run it to normal operating temperature
  3. Read off the fuel temperature sensor signal. Check that the signal is within its permitted range. The signal is measured in the fuel rail for the injectors.

Is the signal OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S41757149692012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

SIGNAL TOO HIGH

see SIGNAL TOO HIGH

see FAULT-TRACING

see FAULT-TRACING

Check whether the fault is permanent or intermittent by reading the signals from the fuel, outside and engine temperature sensors.

  1. Start the engine.

Check that the fuel temperature is within its permitted range. The fuel temperature should not be lower than the outdoor temperature and a maximum of 40 °C above the engine temperature.

The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

HINT: Remove the fuel temperature sensor, but let the connector remain connected. The fuel temperature sensor is integrated in the fuel pressure sensor. The sensor should then show the same temperature as the outdoor temperature.

  1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-476761-S00441440102012060500000)

Scheme 168

Scheme 168: CHECKING THE COMPONENT AND WIRING
Scheme 168: CHECKING THE COMPONENT AND WIRING

Scheme 169

Scheme 169
Scheme 169
  1. Ignition off.
  2. Disconnect the fuel temperature sensor connector.
  3. Check the connectors. Check for loose connections. Check for contact resistance. Check for oxidation. Check the resistance of the sensor between #1 and #2 (to the sensor). 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) . see «COMPONENT SPECIFICATIONS»(ref-476694-S25701556572012060500000) see «FUEL PRESSURE SENSOR, REPLACEMENT»(ref-476695-S32874135222012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476761-S32283225632012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on. Read off the fuel temperature sensor signal. Check that the signal is within its permitted range.

Is the value OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S24846738572012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

CHECKING FOR AIR LEAKAGE IN THE EXHAUST SYSTEM

Check for air leakage. See CHECKING FOR AIR LEAKAGE IN THE EXHAUST SYSTEM .

Remedy as necessary.

Scheme 170

Scheme 170: CHECKING FOR AIR LEAKAGE IN THE EXHAUST SYSTEM
Scheme 170: CHECKING FOR AIR LEAKAGE IN THE EXHAUST SYSTEM

Was there any air leakage?

  1. YES ECM-ver1
  2. NO Refer to «REPLACING THE COMPONENT»(ref-476761-S19932964242012060500000)

REPLACING THE COMPONENT

Try a new heated oxygen sensor (HO2S).

Other information

  1. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  2. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  3. To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  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. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  7. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  1. Continue Refer to «VERIFICATION»(ref-476761-S03334676972012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA (Volvo scan tool) again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S16399034552012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

see FAULT-TRACING

Check whether the problem is permanent or intermittent by reading the signals from the fuel, inlet and engine temperature sensors.

Note. In order for the correct values to be shown, reading of the temperatures must take place at the moment of start.

  1. Start the engine.

Check that the fuel temperature is within its permitted range. The fuel temperature should not be lower than the outdoor temperature and a maximum of 10 °C above the engine temperature.

The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

HINT: Remove the fuel temperature sensor, but let the connector remain connected. The fuel temperature sensor is integrated in the fuel pressure sensor. The sensor should then show the same temperature as the outdoor temperature.

  1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-476761-S03992754842012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on. Read off the fuel temperature sensor signal. Check that the signal is within its permitted range.

Is the value OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S02613766272012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

see FAULT-TRACING

  1. Ignition off
  2. Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
  3. Reinstall the components, reconnect the connectors etc.
  4. Start the engine. Allow the engine to idle. Read off the status of the diagnostic trouble code (DTC) for the rear heated oxygen sensor (HO2S). The text "NOT READY" is displayed if the diagnosis is running. Other information 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-S17655503092012060500000) .

Is "FAULT NOT DETECTED" displayed?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «CHECKING COMPONENTS AND WIRING»(ref-476761-S29149283502012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S23611459732012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S09955448432012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect connectors, reinstall components.
  3. Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S41835574122012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

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

Try a new rear heated oxygen sensor (HO2S) if the above corrective action does not remedy the fault.

Other information

  1. For B5xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S23777230272012060500000)
  2. For B6xx4T, see «HEATED OXYGEN SENSOR (HO2S), REPLACING»(ref-476768-S05984728352012060500000) .
  3. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000) .
  1. Continue Refer to «VERIFICATION»(ref-476761-S24712536662012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reinstall the components, reconnect the connectors etc.
  3. Test drive the car according to the TRIP schedule, see «VERIFYING REPAIRS»(ref-494828-S19905032792012081600000)
  4. Do not switch off the engine after the test drive
  5. Connect the car to VIDA (Volvo scan tool) again. Read off the diagnostic trouble code (DTC) status for the rear heated oxygen sensor (HO2S)
  6. There must not be any faults when the diagnostic is complete.

Was a fault detected?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S37858709612012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

FAULTY SIGNAL

see FAULTY SIGNAL

see FAULTY SIGNAL

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect connectors, reinstall components etc.
  3. Ignition on
  4. Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S05422733352012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect connectors, reinstall components etc.
  3. Ignition on
  4. Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S10289113162012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect connectors, reinstall components etc.
  3. Ignition on
  4. Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S12568422562012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

  1. Start the engine. Read off the fault status of the camshaft position (CMP) sensor. "DIAGNOSIS COMPLETE" must be displayed when the camshaft position (CMP) sensor has been tested. If the fault status is "NO FAULT FOUND" when the diagnostic is complete there is an intermittent fault.
  1. Continue Refer to «CHECKING COMPONENTS AND CONNECTORS»(ref-476761-S24466830132012060500000)

CHECKING COMPONENTS AND CONNECTORS

Check the camshaft position (CMP) sensor and control module connectors. Check for contact resistance and oxidation.

Check that the camshaft position (CMP) sensor is correctly installed and that neither the sensor or the housing is damaged. Damage may affect the position of the sensor in relation to the camshaft rotor.

Try a new camshaft position (CMP) sensor if no fault is found during the above fault-tracing.

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 the location of components in the engine compartment, see «LOCATION OF COMPONENTS, ENGINE COMPARTMENT»(ref-476766-S14590560332012060500000)
  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) .
  7. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .

Scheme 171

Scheme 171
Scheme 171
  1. Continue Refer to «VERIFICATION»(ref-476761-S07491664752012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

  1. YES Refer to «INFORMATION»(ref-476761-S26725114332012060500000)
  2. NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

  1. Start the engine. Read off the fault status of the camshaft position (CMP) sensor. "DIAGNOSIS COMPLETE" must be displayed when the camshaft position (CMP) sensor has been tested. If the fault status is "NO FAULT FOUND" when the diagnostic is complete there is an intermittent fault.
  1. Continue Refer to «CHECKING CONNECTORS AND WIRING»(ref-476761-S08885575642012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

  1. YES Refer to «INFORMATION»(ref-476761-S29464687952012060500000)
  2. NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

  1. start the engine. Read off the fault status of the camshaft position (CMP) sensor. "DIAGNOSIS COMPLETE" must be displayed when the camshaft position (CMP) sensor has been tested. If the fault status is "NO FAULT FOUND" when the diagnostic is complete there is an intermittent fault.
  1. Continue Refer to «CHECKING THE WIRING»(ref-476761-S40207836632012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

  1. YES Refer to «INFORMATION»(ref-476761-S40655837462012060500000)
  2. NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

  1. Start the engine. Read off the fault status of the camshaft position (CMP) sensor. Check the status of the fault when the diagnostic status is COMPLETED. If the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETE there is an intermittent fault.
  1. Continue Refer to «CHECKING COMPONENTS AND CONNECTORS»(ref-476761-S32443473952012060500000)

Check the camshaft position (CMP) sensor and control module connectors. Check for contact resistance and oxidation.

Check that the camshaft position (CMP) sensor is correctly installed and that neither the sensor or the housing is damaged. Damage may affect the position of the sensor in relation to the camshaft rotor.

Remedy as necessary.

Try a new camshaft position (CMP) sensor if no fault is found during the above fault-tracing.

Other information

  1. To connect the breakout box / access the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000)
  2. For the location of components in the engine compartment, see «LOCATION OF COMPONENTS, ENGINE COMPARTMENT»(ref-476766-S14590560332012060500000)
  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) .
  7. see «CHECKING WIRING AND TERMINALS»(ref-476689-S17283010372012060500000) .
  1. Continue Refer to «VERIFICATION»(ref-476761-S41737111852012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Reinstall the connectors, components etc.
  2. Start the engine. Rev the engine to approximately 4000 RPM a few times
  3. Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-3010. Check that the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETED. If the fault status is "FAULT FOUND" when the diagnostic status is COMPLETED there is a fault.

Is the fault status "NO FAULT FOUND"?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S30416329862012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

  1. Start the engine. Read off the fault status of the camshaft position (CMP) sensor. Check the status of the fault when the diagnostic status is COMPLETED. If the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETE there is an intermittent fault.
  1. Continue Refer to «CHECKING THE WIRING»(ref-476761-S27584072262012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Reinstall the connectors, components etc.
  2. Start the engine. Rev the engine to approximately 4000 RPM a few times
  3. Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-3010. Check that the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETED. If the fault status is "FAULT FOUND" when the diagnostic status is COMPLETED there is a fault.

Is the fault status "NO FAULT FOUND"?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S05455514562012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

  1. Start the engine. Read off the fault status of the camshaft position (CMP) sensor. Check the status of the fault when the diagnostic status is COMPLETED. If the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETE there is an intermittent fault.
  1. Continue Refer to «CHECKING CONNECTORS AND WIRING»(ref-476761-S05440392132012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Reinstall the connectors, components etc.
  2. Start the engine. Rev the engine to approximately 4000 RPM a few times
  3. Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-3010. Check that the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETED. If the fault status is "FAULT FOUND" when the diagnostic status is COMPLETED there is a fault.

Is the fault status "NO FAULT FOUND"?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S13024945692012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

see INTERNAL FAULT

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect the connectors, reinstall components etc.
  3. Start engine and run to normal operating temperature.
  4. Rev the engine to 3500 RPM and read off the value of the knock sensor (KS) signal. .

Is the value between 2-6?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S15396000912012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

SIGNAL TOO HIGH. PERMANENT FAULT

see SIGNAL TOO HIGH. PERMANENT FAULT

CHECKING THE KNOCK SENSOR (KS) SIGNAL

  1. Ignition off
  2. Reinstall the components, reconnect the connectors etc.
  3. Start the engine and run it to normal operating temperature
  4. Rev the engine to 3500 RPM. Read off the value of the knock sensor (KS) signal. The value must be between 2 and 6. If the value is now OK it means that the cause of the fault was loose connections in connector. Other information To access or replace the knock sensor (KS), see «KNOCK SENSOR (KS), REPLACING»(ref-476695-S34358848672012060500000) For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000) For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .

Is the value between 2 and 6?

  1. OK OKAY: Troubleshooting has been completed.
  2. NOT OK Refer to «REPLACING THE COMPONENT»(ref-476761-S35517400782012060500000)

Replace the knock sensor (KS). See KNOCK SENSOR (KS), REPLACING .

  1. Continue Refer to «VERIFICATION»(ref-476761-S01898669132012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect the connectors, reinstall components etc.
  3. Start engine and run to normal operating temperature.
  4. Rev the engine to 3500 RPM and read off the value of the knock sensor (KS) signal. .

Is the value between 2-6?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S08654658782012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

SIGNAL TOO LOW. PERMANENT FAULT

see SIGNAL TOO LOW. PERMANENT FAULT

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect the connectors, reinstall components etc.
  3. Start engine and run to normal operating temperature.
  4. Rev the engine to 3500 RPM and read off the value of the knock sensor (KS) signal. .

Is the value between 2-6?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S36190308302012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

see SIGNAL TOO HIGH. PERMANENT FAULT

  1. Ignition off
  2. Reinstall the components, reconnect the connectors etc.
  3. Start the engine and run it to normal operating temperature
  4. Rev the engine to 3500 RPM. Read off the value of the knock sensor (KS) signal. The value must be 2-6. If the value is now OK it means that the cause of the fault was loose connections in connector. Other information To access or replace the knock sensor (KS), see «KNOCK SENSOR (KS), REPLACING»(ref-476695-S34358848672012060500000) For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000) For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .
  1. OK OKAY: Troubleshooting has been completed.
  2. NOT OK Refer to «REPLACING THE COMPONENT»(ref-476761-S13657670952012060500000)

Replace the knock sensor (KS). See KNOCK SENSOR (KS), REPLACING .

  1. Continue Refer to «VERIFICATION»(ref-476761-S13157506572012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off.
  2. Reconnect the connectors, reinstall components etc.
  3. Start engine and run to normal operating temperature.
  4. Rev the engine to 3500 RPM and read off the value of the knock sensor (KS) signal. .

Is the value between 2-6?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S20259319282012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

see SIGNAL TOO LOW. PERMANENT FAULT

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reinstall the connectors, components etc.
  3. Start the engine. The car will not start if there is a fault in the engine speed (RPM) sensor signal.

Does the car start?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S25195932632012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

CHECKING THE FUEL INJECTION SYSTEM, IGNITION SYSTEM AND COMPONENTS

Note. In the event of diagnostic trouble codes (DTCs), that affect camshaft control or camshaft reset valve, these must be fault-traced first.

HINT: In certain cases, the engine control module (ECM) can determine which cylinder has misfired.

Check the fuel level in the fuel tank.

Check that the engine oil level is correct.

Look for moisture in the electrical terminals for the ignition coils and in the spark plug wells.

Check the spark plugs. Check for damage in the insulation and for any other damage.

Check the engine intake system for leakage.

Check the crankcase ventilation. Check for blockage.

Check the fuel pressure and residual pressure.

Check the compression of the engine.

Remedy as necessary.

Other information

  1. see «INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT»(ref-476750)
  2. see «FUEL SYSTEM PRESSURE, CHECKING»(ref-476758-S41713062122012060500000)
  3. see «CYLINDER LEAKAGE TEST»(ref-476762-S05706523772012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476761-S18945831152012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reinstall the connectors, components etc.
  3. Start the engine. Check that the misfire counter is not counting upwards. Check that the engine is firing on all cylinders. NOTE: Misfire can occur at different engine speeds and loads.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S23885533602012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

AIR-LEAKS: IN THE INTAKE SYSTEM, CHECKING

Special tools

see 9995545

see 9995544

Note. The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.

EMISSIONS IMPACT / CATALYTIC CONVERTER DAMAGE / START UP

see EMISSIONS IMPACT / CATALYTIC CONVERTER DAMAGE / START UP

see EMISSIONS IMPACT / CATALYTIC CONVERTER DAMAGE / START UP

see EMISSIONS IMPACT / CATALYTIC CONVERTER DAMAGE / START UP

see EMISSIONS IMPACT / CATALYTIC CONVERTER DAMAGE / START UP

see EMISSIONS IMPACT / CATALYTIC CONVERTER DAMAGE / START UP

see EMISSIONS IMPACT / CATALYTIC CONVERTER DAMAGE / START UP

see EMISSIONS IMPACT / CATALYTIC CONVERTER DAMAGE / START UP

see EMISSIONS IMPACT / CATALYTIC CONVERTER DAMAGE / START UP

see EMISSIONS IMPACT / CATALYTIC CONVERTER DAMAGE / START UP

see EMISSIONS IMPACT / CATALYTIC CONVERTER DAMAGE / START UP

see EMISSIONS IMPACT / CATALYTIC CONVERTER DAMAGE / START UP

CHECKING CABLES AND CONNECTORS

Check ignition coil connector for contact resistance and oxidation, see CONTACT RESISTANCE AND OXIDATION , and check for and loose connections according to LOOSE CONNECTIONS (TERMINALS)

Check signal cable between ignition coil #1 and control module

  1. #A31 (#A31) (ECM 3300)
  2. #A30 (#A30) (ECM 3310)
  3. #A50 (#A50) (ECM 3320)
  4. #A52 (#A52) (ECM 3330)
  5. #A51 (#A51) (ECM 3340)

and power supply between system relay #3 and ignition coil #4 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 access/replace the ignition coil, see «REPLACING IGNITION COILS»(ref-476695-S16117054422012060500000) .
  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) .

Scheme 172

Scheme 172
Scheme 172
  1. Continue Refer to «INFORMATION»(ref-476761-S09419901312012060500000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Check ignition coil connector for contact resistance and oxidation, see CONTACT RESISTANCE AND OXIDATION and check for loose connections according to LOOSE CONNECTIONS (TERMINALS)

Check signal cable between ignition coil #1 and control module

  1. #A31 (#A31) (ECM 3300)
  2. #A50 (#A50) (ECM 3310)
  3. #A52 (#A52) (ECM 3320)
  4. #A49 (#A49) (ECM 3330)
  5. #A30 (#A30) (ECM 3340)
  6. #A51 (#A51) (ECM 3350)

and power supply between system relay #3 and ignition coil #4 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 access/replace the ignition coil, see «REPLACING IGNITION COIL»(ref-476695-S09217829992012060500000) .
  3. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  4. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  1. Continue Refer to «INFORMATION»(ref-476761-S33125484712012060500000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

CHECKING CONNECTOR

  1. Ignition off
  2. Check ignition coil connector for contact resistance and oxidation according to «CONTACT RESISTANCE AND OXIDATION»(ref-494744-S00891297232012081600000) .
  3. Reinstall components, reconnect connectors etc.
  4. Start the engine and let it idle. Engine should fire on all cylinders. If the engine is OK it means that the cause of the fault has been loose connections in the connector. Other information To access/replace the ignition coil, see «REPLACING IGNITION COILS»(ref-476695-S16117054422012060500000) . For 5 cylinder turbocharged engines -2004, see «SIGNAL DESCRIPTION»(ref-476694-S26303328522012060500000) For 5 cylinder turbocharged engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S29505181092012060500000) .

Is the engine idling evenly?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «CHECKING WIRING AND COMPONENTS»(ref-476761-S24032883332012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect connectors, reinstall components etc.
  3. Start the engine. Allow the engine to idle. The engine must fire on all cylinders.

Is the engine idling evenly?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S10821865632012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

  1. Ignition off
  2. Check ignition coil connector for contact resistance and oxidation according to «CONTACT RESISTANCE AND OXIDATION»(ref-494744-S00891297232012081600000) .
  3. Reinstall components, reconnect connectors etc.
  4. Start the engine and let it idle. Engine should fire on all cylinders. If the engine is OK it means that the cause of the fault has been loose connections in the connector. Other information To access/replace the ignition coil, see «REPLACING IGNITION COIL»(ref-476695-S09217829992012060500000) . For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000) For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .

Is the engine idling evenly?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «CHECKING WIRING AND COMPONENTS»(ref-476761-S02405657262012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect connectors, reinstall components etc.
  3. Start the engine. Allow the engine to idle. The engine must fire on all cylinders.

Is the engine idling evenly?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S14982844852012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

CHECKING CABLES

Check signal cable between ignition coil #1 and control module

  1. #A31 (#A31) (ECM 3300)
  2. #A30 (#A30) (ECM 3310)
  3. #A50 (#A50) (ECM 3320)
  4. #A52 (#A52) (ECM 3330)
  5. #A51 (#A51) (ECM 3340)

for an intermittent short-circuit to supply voltage according to SHORT-CIRCUIT TO SUPPLY VOLTAGE, INTERMITTENT FAULTS

Other information

  1. Connecting the breakout box/accessing the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000) .
  2. To access/replace the ignition coil, see «REPLACING IGNITION COILS»(ref-476695-S16117054422012060500000) .
  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) .
  1. Continue Refer to «INFORMATION»(ref-476761-S20835374222012060500000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Check signal cable between ignition coil #1 and control module

  1. #A31 (#A31) (ECM 3300)
  2. #A50 (#A50) (ECM 3310)
  3. #A52 (#A52) (ECM 3320)
  4. #A49 (#A49) (ECM 3330)
  5. #A30 (#A30) (ECM 3340)
  6. #A51 (#A51) (ECM 3350)

for an intermittent short-circuit to supply voltage according to SHORT-CIRCUIT TO SUPPLY VOLTAGE, INTERMITTENT FAULTS

Other information

  1. Connecting the breakout box/accessing the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000) .
  2. To access/replace the ignition coil, see «REPLACING IGNITION COIL»(ref-476695-S09217829992012060500000) .
  3. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  4. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  1. Continue Refer to «INFORMATION»(ref-476761-S41231611152012060500000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect connectors, reinstall components etc.
  3. Start the engine. Allow the engine to idle. The engine must fire on all cylinders.

Is the engine idling evenly?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S36749122902012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect connectors, reinstall components etc.
  3. Start the engine. Allow the engine to idle. The engine must fire on all cylinders.

Is the engine idling evenly?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S36171082482012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check signal cable between ignition coil #1 and control module

  1. #A31 (#A31) (ECM 3300)
  2. #A30 (#A30) (ECM 3310)
  3. #A50 (#50) (ECM 3320)
  4. #A52 (#52) (ECM 3330)
  5. #A51 (#A51) (ECM 3340)

for an intermittent short-circuit to ground according to SHORT-CIRCUIT TO GROUND, PERMANENT FAULTS .

Other information

  1. Connecting the breakout box/accessing the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000) .
  2. To access/replace the ignition coil, see «REPLACING IGNITION COILS»(ref-476695-S16117054422012060500000) .
  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) .
  1. Continue Refer to «INFORMATION»(ref-476761-S33981768872012060500000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Check signal cable between ignition coil #1 and control module

  1. #A31 (#A31) (ECM 3300)
  2. #A50 (#A50) (ECM 3310)
  3. #A52 (#A52) (ECM 3320)
  4. #A49 (#A49) (ECM 3330)
  5. #A30 (#A30) (ECM 3340)
  6. #A51 (#A51) (ECM 3350)

for an intermittent short-circuit to ground according to SHORT-CIRCUIT TO GROUND, PERMANENT FAULTS .

Other information

  1. Connecting the breakout box/accessing the control module, see «CONNECTING THE BREAKOUT BOX»(ref-476691-S38062545372012060500000) .
  2. To access/replace the ignition coil, see «REPLACING IGNITION COIL»(ref-476695-S09217829992012060500000) .
  3. For 6 cylinder engines -2004, see «SIGNAL SPECIFICATION»(ref-476694-S39196199822012060500000)
  4. For 6 cylinder engines 2005-, see «SIGNAL SPECIFICATION»(ref-476694-S31890965202012060500000) .
  1. Continue Refer to «INFORMATION»(ref-476761-S22491835982012060500000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect connectors, reinstall components etc.
  3. Start the engine. Allow the engine to idle. The engine must fire on all cylinders.

Is the engine idling evenly?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S22012726752012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect connectors, reinstall components etc.
  3. Start the engine. Allow the engine to idle. The engine must fire on all cylinders.

Is the engine idling evenly?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S05708481452012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Scheme 173

Scheme 173
Scheme 173

Scheme 174

Scheme 174
Scheme 174
  1. Ignition off. Check the engine speed (RPM) sensor connector. Check for contact resistance and oxidation. Check the signal cable between: The engine speed (RPM) sensor terminal #1 and Engine control module (ECM) terminal #A48 (#A48). The engine speed (RPM) sensor terminal #2 and Engine control module (ECM) terminal #A66 (#B6). Check the signal line for open circuit, short-circuit to ground and short-circuit to voltage. Check the carrier plate. 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) . see «REPLACING THE ENGINE SPEED (RPM) SENSOR»(ref-476695-S39857541522012060500000) see «CHECKING WIRING AND TERMINALS»(ref-476689-S17655503092012060500000)
  1. Continue Refer to «VERIFICATION»(ref-476761-S19775703202012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Start the engine
  4. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S10601344632012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

SIGNAL MISSING

see SIGNAL MISSING

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Start the engine
  4. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S00794979152012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

FAULTY SIGNAL OR SIGNAL MISSING

see FAULTY SIGNAL OR SIGNAL MISSING

SIGNAL TOO HIGH/SIGNAL TOO LOW. INTERMITTENT FAULT

see SIGNAL TOO HIGH/SIGNAL TOO LOW. INTERMITTENT FAULT

In case of this defect, troubleshooting is not followed by verification.

The information can be displayed again or the fault-tracing for this fault can be interrupted.

see FAULTY SIGNAL OR SIGNAL MISSING

see FAULTY SIGNAL OR SIGNAL MISSING

  1. Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". HINT: In some cases several functions of the component will be diagnosed. This affects the amount of time taken to run the diagnostic. The fault is permanent if the fault status is "Fault found". If the fault status is "No fault found" the fault is intermittent and not presently active.
  1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476761-S26987482632012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Start the engine
  4. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S00735554532012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

see SIGNAL TOO HIGH

  1. Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". HINT: In some cases several functions of the component will be diagnosed. This affects the amount of time taken to run the diagnostic. The fault is permanent if the fault status is "Fault found". If the fault status is "No fault found" the fault is intermittent and not presently active.
  1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476761-S21748366102012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Start the engine
  4. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S36175014232012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

SIGNAL TOO LOW

see SIGNAL TOO LOW

  1. Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". HINT: In some cases several functions of the component will be diagnosed. This affects the amount of time taken to run the diagnostic. The fault is permanent if the fault status is "Fault found". If the fault status is "No fault found" the fault is intermittent and not presently active.
  1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476761-S08446185022012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Start the engine
  4. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S27145073132012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

see FAULTY SIGNAL OR SIGNAL MISSING

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

see SIGNAL TOO HIGH. PERMANENT FAULT

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

see SIGNAL TOO LOW. PERMANENT FAULT

see FAULTY SIGNAL OR SIGNAL MISSING

see FAULTY SIGNAL OR SIGNAL MISSING

  1. Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic. The fault is permanent if the fault status is "Fault found". If the fault status is "No fault found" the fault is intermittent and not presently active.
  1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476761-S09142848112012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Start the engine
  4. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S14691777872012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

see SIGNAL TOO HIGH

  1. Start the engine. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic. The fault is permanent if the fault status is "Fault found". If the fault status is "No fault found" the fault is intermittent and not presently active.
  1. Continue Refer to «CHECKING COMPONENTS AND WIRING»(ref-476761-S07141669212012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Start the engine
  4. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Increase the engine speed a number of times until the diagnostic is "Complete". Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete. HINT: In some cases several functions of the component will be diagnosed. The affects the amount of time taken to run the diagnostic.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S25138411612012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

see SIGNAL TOO LOW

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

see SIGNAL TOO HIGH. PERMANENT FAULT

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

see SIGNAL TOO LOW. PERMANENT FAULT

see SIGNAL TOO HIGH/SIGNAL TOO LOW. INTERMITTENT FAULT

SIGNAL TOO HIGH/SIGNAL TOO LOW. PERMANENT FAULT

see SIGNAL TOO HIGH/SIGNAL TOO LOW. PERMANENT FAULT

see SIGNAL TOO HIGH/SIGNAL TOO LOW. INTERMITTENT FAULT

see SIGNAL TOO HIGH/SIGNAL TOO LOW. PERMANENT FAULT

see FAULT-TRACING INFORMATION

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect connectors, reinstall components etc.
  3. Start the engine. Allow the engine to idle. The engine must fire on all cylinders.

Is the engine idling evenly?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S29839772532012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect connectors, reinstall components etc.
  3. Start the engine. Allow the engine to idle. The engine must fire on all cylinders.

Is the engine idling evenly?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S34936177372012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

  1. Ignition off
  2. Reconnect connectors, reinstall components etc.
  3. Start the engine. Allow the engine to idle. The engine must fire on all cylinders.

Is the engine idling evenly?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «INFORMATION»(ref-476761-S41414173872012060500000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Note. In the event of diagnostic trouble codes (DTCs), that affect camshaft control or camshaft reset valve, these must be fault-traced first.

The diagnostic trouble code (DTC) indicates which cylinder has misfired

Diagnostic Trouble Code (DTC)Misfiring cylinder
ECM-35131
ECM-35232
ECM-35333
ECM-35434
ECM-35535
ECM-35636

Check that the engine oil level is correct.

Check the spark plugs. Search for damage in the insulation and other damage.

Check the ignition spark.

Check the function of the crankcase ventilation.

Check the fuel pressure and residual pressure. See CHECKING FUEL AND RESIDUAL PRESSURES

Check if there is any air leakage. See INTAKE AND EXHAUST SYSTEM - CLEANING, INSPECTION AND ADJUSTMENT

Check that the engine seals tight. See COMPRESSION TEST

Check the flywheel for damage.

Other information

  1. for information about the misfire diagnostic: see «MISFIRE DIAGNOSTICS»(ref-476764-S26687838302012060500000) .
  1. Continue Refer to «VERIFICATION»(ref-476761-S24694805862012060500000)

HINT: After carrying out the repair, check that the fault has been remedied.

Scheme 175

Scheme 175
Scheme 175
  1. Ignition off.
  2. Reinstall the connectors, components etc.
  3. Start the engine. Check that the misfire counter is not counting upwards. Check that the engine is firing on all cylinders. Also check if the misfire diagnosis is active, if not, check the conditions according to: see «MISFIRE DIAGNOSTICS»(ref-476764-S26687838302012060500000) .

Does the misfire counter count up?

  1. YES Refer to «INFORMATION»(ref-476761-S09364116672012060500000)
  2. NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

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