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Engine Control Module (ECM) Diagnostic Trouble Codes - 5 of 9: Diagnosis Volvo V50 I рестайлинг

Testing & Diagnostics 16 illustrations ~7244 words

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-301A

Condition

Scheme 95

Scheme 95: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-301A
Scheme 95: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-301A

The engine control module (ECM) checks that 5 camshaft flanks are detected during 2 crankshaft revolutions (i. e. that all camshaft flanks are detected on one camshaft revolution). The diagnostic trouble code (DTC) is stored if fewer camshaft flanks are detected.

The diagnostic trouble code (DTC) can be diagnosed when the engine speed (RPM) is higher than a set value and refers to the camshaft position (CMP) sensor for the exhaust camshaft.

Substitute Value

  1. The signal from the engine speed (RPM) sensor is used.

Possible Source

  1. Intermittent open-circuit in wiring or splices
  2. Incorrectly adjusted camshafts
  3. Incorrectly installed camshaft position (CMP) sensor
  4. Damaged camshaft position (CMP) sensor.

Fault symptom[s]

  1. None.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-303C

Condition

Scheme 96

Scheme 96: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-303C
Scheme 96: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-303C

In certain operating conditions the engine control module (ECM) checks the signal from the front knock sensor (KS). The diagnostic trouble code (DTC) is stored if the signal from the front knock sensor (KS) is too high in these operating conditions.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. Safety retardation of ignition advance
  2. Reduced boost pressure.

Possible Source

  1. Short-circuit to ground in the signal cable
  2. Incorrectly installed knock sensor (KS)
  3. Damaged temperature sensor.

Fault symptom[s]

  1. Poor performance.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-303C

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-303C

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-303D

Condition

In certain operating conditions the engine control module (ECM) checks the signal from the front knock sensor (KS). The diagnostic trouble code (DTC) is stored if the signal from the front knock sensor (KS) is too low in these operating conditions.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. Safety retardation of ignition advance
  2. Reduced boost pressure.

Possible Source

  1. Contact resistance in the knock sensor (KS) terminals
  2. Open-circuit in the signal cable
  3. Short-circuit between the knock sensor (KS) signal cables
  4. Damaged knock sensor (KS).

Fault symptom[s]

  1. Poor performance.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-303D

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-303D

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-304C

Condition

In certain operating conditions the engine control module (ECM) checks the signal from the rear knock sensor (KS). The diagnostic trouble code (DTC) is stored if the signal from the rear knock sensor (KS) is too high in these operating conditions.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. Safety retardation of ignition advance
  2. Reduced boost pressure.

Possible Source

  1. Short-circuit to ground in the signal cable
  2. Incorrectly installed knock sensor (KS)
  3. Damaged temperature sensor.

Fault symptom[s]

  1. Poor performance.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-304C

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-304C

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-304D

Condition

In certain operating conditions the engine control module (ECM) checks the signal from the rear knock sensor (KS). The diagnostic trouble code (DTC) is stored if the signal from the rear knock sensor (KS) is too low in these operating conditions.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. Safety retardation of ignition advance
  2. Reduced boost pressure.

Possible Source

  1. Contact resistance in the knock sensor (KS) terminals
  2. Open-circuit in the signal cable
  3. Short-circuit between the knock sensor (KS) signal cables
  4. Damaged knock sensor (KS).

Fault symptom[s]

  1. Poor performance.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-304D

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-304D

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

Condition

Scheme 97

Scheme 97: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
Scheme 97: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects an internal fault in the knock control sensor.

The diagnostic trouble code (DTC) is diagnosed when the ignition is on.

Substitute Value

  1. Safety retardation of ignition advance.

Possible Source

  1. Damaged control module.

Fault symptom[s]

  1. Deterioration in performance
  2. Malfunction indicator lamp (MIL) lit.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3060

Condition

The signal from the knock sensor (KS) is filtered in the engine control module (ECM). The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects an internal fault in the knock control circuit filter.

The diagnostic trouble code (DTC) is diagnosed when starting the engine.

Substitute Value

  1. Safety retardation of ignition advance.

Possible Source

  1. Damaged engine control module (ECM).

Fault symptom[s]

  1. Deterioration in performance
  2. Malfunction indicator lamp (MIL) lit.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3060

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3100

Condition

Scheme 98

Scheme 98: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3100
Scheme 98: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3100

The engine control module (ECM) counts the number of teeth on the flywheel / carrier plate using the engine speed (RPM) sensor signal. The diagnostic trouble code (DTC) is stored if an incorrect number of teeth are detected during a set number of crankshaft revolutions when starting the engine.

The diagnostic trouble code (DTC) can be diagnosed by the engine control module (ECM) when the starter motor is working.

Substitute Value

  1. The signal from camshaft position (CMP) sensor is used.

Possible Source

  1. Short-circuit to supply voltage or ground in the signal cable (+), or open-circuit in the signal cable
  2. Short-circuit to supply voltage or ground in the signal cable (-), or open-circuit in the signal cable
  3. Damaged engine speed (RPM) sensor.

Fault symptom[s]

  1. None.

Condition

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a certain number of misfires during the first 1000 engine revolutions after the engine is started.

This diagnostic trouble code (DTC) is stored together with other diagnostic trouble codes (DTCs) which indicate which cylinders are misfiring.

Substitute Value

  1. Rear heated oxygen sensor control shut off
  2. Fuel trim switched off.

Possible Source

  1. Low fuel level
  2. Engine does not reach normal operating temperature between several cold starts
  3. Water in the spark plug wells
  4. Damaged spark plug
  5. Contaminated or incorrect fuel
  6. Poor fuel quality (summer fuel in winter).
  7. Air leakage
  8. Blocked crankcase ventilation.
  9. Damaged VVT-unit.
  10. Blocked / leaking injector
  11. Faulty fuel pressure
  12. Uneven compression

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit
  2. The engine misfires
  3. The engine is difficult to start
  4. Deterioration in performance
  5. Uneven idle
  6. The engine is not firing on all cylinders.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3100

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-310A

Condition

The engine control module (ECM) counts the number of teeth on the flywheel / carrier plate using the engine speed (RPM) sensor signal. The diagnostic trouble code (DTC) for an intermittent fault is stored if an incorrect number of teeth are detected during a set number of crankshaft revolutions. The diagnostic trouble code (DTC) for a faulty signal is stored if the fault is detected during several consecutive operating cycles.

The diagnostic trouble code (DTC) can be diagnosed when the engine speed (RPM) is higher than approximately 1000 RPM.

Substitute Value

Signal from camshaft position (CMP) sensor.

Possible Source

  1. Contact resistance or oxidation in the engine speed (RPM) sensor connector
  2. Incorrectly installed engine speed (RPM) sensor
  3. Damage to carrier plate / flywheel
  4. Damaged engine speed (RPM) sensor.

Fault symptom[s]

  1. None.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-310C

Condition

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects misfires in more than one cylinder which could damage the catalytic converter. The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

This diagnostic trouble code (DTC) is stored together with other diagnostic trouble codes (DTCs) which indicate which cylinders are misfiring.

Substitute Value

  1. Three-way catalytic converter (TWC) diagnosis shut off
  2. Leak diagnostic shut off
  3. Rear heated oxygen sensor control shut off
  4. Fuel trim switched off.

Possible Source

  1. Low fuel level
  2. Engine does not reach normal operating temperature between several cold starts
  3. Water in the spark plug wells
  4. Damaged spark plug
  5. Contaminated or incorrect fuel
  6. Poor fuel quality (summer fuel in winter).
  7. Air leakage
  8. Blocked crankcase ventilation.
  9. Damaged VVT-unit.
  10. Blocked / leaking injector
  11. Faulty fuel pressure
  12. Uneven compression

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit
  2. The engine misfires
  3. The engine is difficult to start
  4. Deterioration in performance
  5. Uneven idle
  6. The engine is not firing on all cylinders.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-310C

Condition

Engine control module (ECM) checks function for impulse sensor's signal.

The engine control module (ECM) counts the number of teeth on the flywheel / carrier plate using the engine speed (RPM) sensor signal.

The diagnostic trouble code for intermittent problem is generated if the control module detects

  1. Wrong number of teeth during a certain amount of crankshaft revolutions.

The diagnostic trouble code for incorrect signal is generated if the control module detects

  1. Wrong number of teeth during a certain amount of crankshaft revolutions, several driving cycles in a row.

The control module's test for the diagnostic trouble code (DTC) starts in the event of

  1. Engine running.
  2. Engine RPM over 1000 RPM.

Note. The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.

Substitute Value

  1. Signal from camshaft position (CMP) sensor.

Possible Source

  1. Contact resistance or oxidation in the engine speed (RPM) sensor connector.
  2. Incorrectly installed impulse sensor.
  3. Damage to carrier plate / flywheel.
  4. Damaged engine speed (RPM) sensor.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-310D

Condition

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects misfires in more than one cylinder which could affect emissions. The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

This diagnostic trouble code (DTC) is stored together with other diagnostic trouble codes (DTCs) which indicate which cylinders are misfiring.

Substitute Value

  1. Three-way catalytic converter (TWC) diagnosis shut off
  2. Leak diagnostic shut off
  3. Rear heated oxygen sensor control shut off
  4. Fuel trim switched off.

Possible Source

  1. Low fuel level
  2. Engine does not reach normal operating temperature between several cold starts
  3. Water in the spark plug wells
  4. Damaged spark plug
  5. Contaminated or incorrect fuel
  6. Poor fuel quality (summer fuel in winter).
  7. Air leakage
  8. Blocked crankcase ventilation.
  9. Damaged VVT-unit.
  10. Blocked / leaking injector
  11. Faulty fuel pressure
  12. Uneven compression

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit
  2. The engine misfires
  3. The engine is difficult to start
  4. Deterioration in performance
  5. Uneven idle
  6. The engine is not firing on all cylinders.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-310D

Condition

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects misfiring during the first 1000 engine revolutions. The diagnostic trouble code (DTC) indicates which cylinder is misfiring. The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

  1. ECM-3110: cylinder 1
  2. ECM-3120: cylinder 2
  3. ECM-3130: cylinder 3
  4. ECM-3140: cylinder 4
  5. ECM-3150: cylinder 5.

Substitute Value

  1. Rear heated oxygen sensor control shut off
  2. Fuel trim switched off.

Possible Source

  1. Low fuel level
  2. The engine does not reach normal operating temperature between several cold starts
  3. Water in the spark plug wells
  4. Damaged spark plug
  5. Contaminated or incorrect fuel
  6. Poor fuel quality (summer fuel in winter).
  7. Air leakage
  8. Blocked crankcase ventilation.
  9. Damaged VVT-unit.
  10. Blocked / leaking injector
  11. Faulty fuel pressure
  12. Uneven compression

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit
  2. The engine misfires
  3. The engine is difficult to start
  4. Deterioration in performance
  5. Uneven idle
  6. The engine is not firing on all cylinders.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

Condition

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects misfiring which could damage the catalytic converter after the first 1000 engine revolutions after the engine is started. The diagnostic trouble code (DTC) indicates which cylinder is misfiring. The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

  1. ECM-3110: cylinder 1
  2. ECM-3120: cylinder 2
  3. ECM-3130: cylinder 3
  4. ECM-3140: cylinder 4
  5. ECM-3150: cylinder 5.

Substitute Value

  1. Rear heated oxygen sensor control shut off
  2. Fuel trim switched off.

Possible Source

  1. Low fuel level
  2. Engine does not reach normal operating temperature between several cold starts
  3. Water in the spark plug wells
  4. Damaged spark plug
  5. Contaminated or incorrect fuel
  6. Poor fuel quality (summer fuel in winter).
  7. Air leakage
  8. Blocked crankcase ventilation.
  9. Damaged VVT-unit.
  10. Blocked / leaking injector
  11. Faulty fuel pressure
  12. Uneven compression

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit
  2. The engine misfires
  3. The engine is difficult to start
  4. Deterioration in performance
  5. Uneven idle
  6. The engine is not firing on all cylinders.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

Condition

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects misfiring which affect emissions after the first 1000 engine revolutions after the engine is started. The diagnostic trouble code (DTC) indicates which cylinder is misfiring. The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

  1. ECM-3110: cylinder 1
  2. ECM-3120: cylinder 2
  3. ECM-3130: cylinder 3
  4. ECM-3140: cylinder 4
  5. ECM-3150: cylinder 5.

Substitute Value

  1. Rear heated oxygen sensor control shut off
  2. Fuel trim switched off.

Possible Source

  1. Low fuel level
  2. Engine does not reach normal operating temperature between several cold starts
  3. Water in the spark plug wells
  4. Damaged spark plug
  5. Contaminated or incorrect fuel
  6. Poor fuel quality (summer fuel in winter).
  7. Air leakage
  8. Blocked crankcase ventilation.
  9. Damaged VVT-unit.
  10. Blocked / leaking injector
  11. Faulty fuel pressure
  12. Uneven compression

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit
  2. The engine misfires
  3. The engine is difficult to start
  4. Deterioration in performance
  5. Uneven idle
  6. The engine is not firing on all cylinders.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3200

Condition

Scheme 99

Scheme 99: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3200
Scheme 99: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3200

The engine control module (ECM) counts the number of ignitions for all 5 cylinders during a specific time period. The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that a certain number of ignitions are missing during this time period. This diagnostic trouble code (DTC) is always stored together with diagnostic trouble code (DTC) ECM-33X0.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

Fuel trim disabled.

Possible Source

  1. Contact resistance or oxidation, ignition coil connector
  2. Damaged ignition coil.

Fault symptom[s]

  1. The engine misfires.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3300

Condition

The engine control module (ECM) checks the signal from the engine speed (RPM) sensor.

The diagnostic trouble code (DTC) is stored in the engine control module (ECM) if it detects that the signal from the engine speed (RPM) sensor is lower than the calculated engine speed (RPM) from the camshaft position (CMP) sensor.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. The control module uses the signal from the camshaft position (CMP) sensor if the camshaft position (CMP) sensor has been adapted.

Possible Source

  1. Open-circuit in the signal cable or ground lead
  2. Short-circuit to ground or supply voltage in the signal cable
  3. Contact resistance in the terminals
  4. Damaged engine speed (RPM) sensor
  5. Damaged carrier plate.

Fault symptom[s]

  1. The starter motor turns but the engine does not start
  2. The engine stops.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3300

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-330B

Condition

The engine control module (ECM) checks the signal from the engine speed (RPM) sensor. The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that there is no signal from the engine speed (RPM) sensor.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. The control module uses the signal from the camshaft position (CMP) sensor if the camshaft position (CMP) sensor has been adapted.

Possible Source

  1. Open-circuit in the signal cable or ground lead
  2. Short-circuit to ground or supply voltage in the signal cable
  3. Contact resistance in the terminals
  4. Damaged engine speed (RPM) sensor.

Fault symptom[s]

  1. The starter motor turns but the engine does not start
  2. The engine stops.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-330B

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-33X0

Condition

The engine control module (ECM) checks the primary circuit for the ignition coils using a signal from the diagnostic lead from the ignition coils. The diagnostic trouble code (DTC) is stored if the control module detects that the signal for an ignition coil is faulty.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

Fuel trim disabled.

Possible Source

  1. Contact resistance or oxidation in the connector for the ignition coil
  2. Short-circuit to supply voltage or ground in the signal cable
  3. Open-circuit in the signal cable
  4. Open-circuit in the power cable
  5. Short-circuit to supply voltage or ground in the diagnostic lead
  6. Open-circuit in the diagnostic lead
  7. Damaged ignition coil.

Fault symptom[s]

  1. The engine misfires.

Condition

Scheme 100

Scheme 100: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
Scheme 100: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

Diagnostic trouble code (DTC) ECM-3400 covers camshaft position (CMP) sensor, intake.

Diagnostic trouble code (DTC) ECM-3410 covers camshaft position (CMP) sensor, exhaust.

The engine control module (ECM) checks the pulse width modulation (PWM) signal from the camshaft position (CMP) sensor.

The diagnostic trouble code (DTC) is stored if the signal from the camshaft position (CMP) sensor is missing intermittently. This is interpreted by the engine control module (ECM) as a fault. The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. None.

Possible Source

  1. The camshaft position (CMP) sensor is in the wrong position
  2. Damaged camshaft position (CMP) sensor
  3. Loose connections.
  4. Incorrectly adjusted camshafts.

Fault symptom[s]

  1. The engine is difficult to start.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3400

Condition

Scheme 101

Scheme 101: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3400
Scheme 101: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3400

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal from the knock sensor (KS) is higher or lower than the normal range for a certain time.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value

Safety retardation of ignition advance.

Knock control is disabled.

Possible Source

Signal too high

  1. Short-circuit to supply voltage in the signal cable
  2. Open-circuit in the signal cable
  3. Contact resistance or oxidation in the connector for the knock sensor (KS)
  4. Damaged knock sensor (KS).

Signal too low

  1. Short-circuit to ground in the signal cable
  2. Damaged knock sensor (KS).

Fault symptom[s]

  1. Poor performance.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3400

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-340A

Condition

The signal from the knock sensor (KS) varies according to engine speed (RPM). The engine control module (ECM) checks that the knock sensor (KS) signal is within certain limits. These limits are dependent on engine speed (RPM) and load.

The diagnostic trouble code (DTC) is stored if the signal from the knock sensor (KS) is higher or lower than the set limits.

The diagnostic trouble code (DTC) can be diagnosed when driving.

Substitute Value

Safety retardation of ignition advance.

Knock control is disabled.

Possible Source

Too little roar

  1. Contact resistance or oxidation in the connector for the knock sensor (KS)
  2. Loosely installed knock sensor (KS)
  3. Damaged knock sensor (KS).

Too much roar

  1. Contact resistance or oxidation in the connector for the knock sensor (KS)
  2. Damaged knock sensor (KS).

Fault symptom[s]

  1. Poor performance.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-340A

Condition

Diagnostic trouble code (DTC) ECM-340B is for the camshaft position (CMP) sensor, intake.

Diagnostic trouble code (DTC) ECM-341B is for the camshaft position (CMP) sensor, exhaust.

The engine control module (ECM) checks the pulse width modulation (PWM) signal from the camshaft position (CMP) sensor.

The diagnostic trouble code (DTC) is stored if there is no signal from the camshaft position (CMP) sensor although it appears sporadically. This is interpreted by the engine control module (ECM) as a fault. The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. None.

Possible Source

  1. The camshaft position (CMP) sensor is in the wrong position
  2. Damaged camshaft position (CMP) sensor
  3. Loose connections.
  4. Incorrectly adjusted camshafts.

Fault symptom[s]

  1. The engine is difficult to start.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

Condition

Diagnostic trouble code (DTC) ECM-340C is for the camshaft position (CMP) sensor, intake.

Diagnostic trouble code (DTC) ECM-341C is for the camshaft position (CMP) sensor, exhaust.

The engine control module (ECM) checks the pulse width modulation (PWM) signal from the camshaft position (CMP) sensor.

The diagnostic trouble code (DTC) is stored if the signal from the camshaft position (CMP) sensor is constantly high. This is interpreted by the engine control module (ECM) as a fault. The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. None.

Possible Source

  1. Open-circuit in the signal cable
  2. Short-circuit to supply voltage in the signal cable
  3. Short-circuit to ground in the power cable
  4. Open-circuit in the ground lead
  5. Damaged camshaft position (CMP) sensor.

Fault symptom[s]

  1. The engine is difficult to start.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

Scheme 102

Scheme 102
Scheme 102
  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 to 2500 RPM 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-466658-S18146881132012042500000)

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

Condition

Diagnostic trouble code (DTC) ECM-340D is for the camshaft position (CMP) sensor, intake.

Diagnostic trouble code (DTC) ECM-341D is for the camshaft position (CMP) sensor, exhaust.

The engine control module (ECM) checks the pulse width modulation (PWM) signal from the camshaft position (CMP) sensor.

The diagnostic trouble code (DTC) is stored if the signal from the camshaft position (CMP) sensor is constantly low. This is interpreted by the engine control module (ECM) as a fault. The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. None.

Possible Source

  1. Short-circuit to ground in the signal cable
  2. Open-circuit in the power cable
  3. Loose connections.

Fault symptom[s]

  1. The engine is difficult to start.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-342B

Condition

The diagnostic trouble code (DTC) (Signal missing) is stored if the engine control module (ECM) detects that the signal from the camshaft position (CMP) sensor for both intake and exhaust sides is incorrect or missing.

This diagnostic trouble code (DTC) is always stored along with another diagnostic trouble code (DTC) for signal error, camshaft position (CMP) sensor.

Substitute Value

  1. Camshaft control switched off
  2. Diagnostic for camshaft control switched off
  3. Initial boost pressure.

Possible Source

Signal missing

  1. Incorrect circuit for the camshaft position (CMP) sensors.

Fault symptom[s]

  1. Uneven idle
  2. Poor performance.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-342B

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3502

Condition

If the engine control module (ECM) detects a particular number of misfires during a set number of crankshaft revolutions, this will be interpreted as misfires which increase emissions. The diagnostic trouble code (DTC) will be stored. In certain cases, the diagnostic trouble code (DTC) qualifier can also indicate which cylinder is misfiring.

The misfire diagnostic is active after the engine is started.

Substitute Value

  1. None.

Possible Source

  1. Low fuel level
  2. Repeated cold starting where the engine coolant temperature (ECT) has not reached normal operating temperature between starts
  3. Moisture in spark plug wells
  4. Damaged spark plug
  5. Contaminated or incorrect fuel
  6. Incorrect fuel quality (summer fuel in winter, certain markets).
  7. Air leakage
  8. Blocked crankcase ventilation.
  9. Damaged VVT-unit.
  10. Blocked / leaking injector
  11. Faulty fuel pressure
  12. Uneven compression

Fault symptom[s]

  1. Driving/Poor performance/lacks power/At take off
  2. The engine misfires
  3. The engine is difficult to start
  4. Deterioration in performance
  5. Uneven idle
  6. The engine is not firing on all cylinders.
  7. Warning lights and chimes/Malfunction Indicator Light ("Check engine" light) indication/no indication

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3502

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3503

Condition

If the engine control module (ECM) detects a particular number of misfires during a set number of crankshaft revolutions, this will be interpreted as misfires that could damage the catalytic converter. The diagnostic trouble code (DTC) will be stored. In certain cases, the diagnostic trouble code (DTC) qualifier can also indicate which cylinder is misfiring.

The misfire diagnostic is active after the engine is started.

Substitute Value

  1. Fuel trim disabled.

Possible Source

  1. Low fuel level
  2. Repeated cold starting where the engine coolant temperature (ECT) has not reached normal operating temperature between starts
  3. Moisture in spark plug wells
  4. Damaged spark plug
  5. Contaminated or incorrect fuel
  6. Incorrect fuel quality (summer fuel in winter, certain markets).
  7. Air leakage
  8. Blocked crankcase ventilation.
  9. Damaged VVT-unit.
  10. Blocked / leaking injector
  11. Faulty fuel pressure
  12. Uneven compression

Fault symptom[s]

  1. The malfunction indicator lamp (MIL) flashes
  2. The engine misfires
  3. The engine is difficult to start
  4. Deterioration in performance
  5. Uneven idle
  6. The engine is not firing on all cylinders.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-3503

Condition

The engine control module (ECM) checks the signal cable for the ignition coil primary winding.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal for the primary winding for the ignition coil is missing.

The diagnostic trouble code (DTC) indicates which ignition coil is being referred to.

  1. ECM-360B: ignition coil 1
  2. ECM-361B: ignition coil 2
  3. ECM-362B: ignition coil 3
  4. ECM-363B: ignition coil 4
  5. ECM-364B: ignition coil 5.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. None.

Possible Source

  1. Contact resistance in the terminals
  2. Open-circuit in the signal cable
  3. Damaged ignition coil.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit
  2. The engine is not firing on all cylinders.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

Condition

The engine control module (ECM) checks the signal cable for the ignition coil primary winding.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal for the primary winding for the ignition coil is too high.

The diagnostic trouble code (DTC) indicates which ignition coil is being referred to.

  1. ECM-360C: ignition coil 1
  2. ECM-361C: ignition coil 2
  3. ECM-362C: ignition coil 3
  4. ECM-363C: ignition coil 4
  5. ECM-364C: ignition coil 5.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. None.

Possible Source

  1. Short-circuit to supply voltage in the signal cable
  2. Damaged ignition coil.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit
  2. The engine is not firing on all cylinders.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

Condition

The engine control module (ECM) checks the signal cable for the ignition coil primary winding.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal for the primary winding for the ignition coil is too low.

The diagnostic trouble code (DTC) indicates which ignition coil is being referred to.

  1. ECM-360D: ignition coil 1
  2. ECM-361D: ignition coil 2
  3. ECM-362D: ignition coil 3
  4. ECM-363D: ignition coil 4
  5. ECM-364D: ignition coil 5.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

  1. None.

Possible Source

  1. Short-circuit to ground in the signal cable
  2. Damaged ignition coil.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit
  2. The engine is not firing on all cylinders.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

Condition

Engine control module (ECM) performs and monitors ignition control during cold-start.

If the ignition cannot be controlled according to preset manner, the catalytic converter is not heated fast enough, which may lead to worse emissions.

Note. Not being able to perform control in the desired way always depends on another malfunction in the system. It is highly likely that this malfunction also causes idle control to not work as it should. Therefore, troubleshoot according to diagnostic trouble code for idle control.

HINT: The term cold-start means that an engine start when catalytic converter heating is requested by Engine control module (ECM). Catalytic converter heating is requested when the engine has been off and cooled for at least 15 minutes, and the engine temperature at start is lower than 70 °C.

Substitute Value

  1. None.

Possible Source

  1. Search for failure cause with another stored diagnostic trouble code in the control module.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4000

Condition

Scheme 103

Scheme 103: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4000
Scheme 103: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4000

The diagnostic trouble code (DTC) is stored if the control module, when driving, registers a short-circuit to ground or supply voltage in the EVAP valve signal cable or an open-circuit.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value

  1. Fuel trim disabled.

Possible Source

Signal too high

  1. Short-circuit to supply voltage in the signal cable.

Signal too low

  1. Open-circuit in the signal cable
  2. Short-circuit to ground in the signal cable
  3. Damaged EVAP valve.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit
  2. Fuel smell.

Scheme 104

Scheme 104: CHECKING THE STATUS
Scheme 104: CHECKING THE STATUS
  1. Ignition on. Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". The fault is permanent if the fault status is "Fault found". The fault is intermittent if the fault status is "No fault detected".
  1. Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466658-S33342297212012042500000)

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4000

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-400A

Condition

The engine control module (ECM) detects a fault in the function of the EVAP valve by analyzing the signal from the manifold absolute pressure (MAP) sensor.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the EVAP valve has stuck.

Substitute Value

  1. None.

Possible Source

  1. The hose between the intake manifold and evaporative emission system (EVAP) valve is defective, blocked or trapped
  2. The hose between the evaporative emission system (EVAP) valve and canister is defective, blocked or trapped
  3. The EVAP valve has stuck in the open position
  4. The EVAP valve has stuck in the closed position.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit
  2. Fuel smell.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-400C

Condition

The engine control module (ECM) continuously checks three-way catalytic converter (TWC) efficiency by comparing signals from the rear heated oxygen sensor (HO2S) with the front heated oxygen sensor (HO2S). The diagnostic trouble code (DTC) will be stored if the efficiency of the three-way catalytic converter (TWC) deviates too much.

The diagnostic trouble code (DTC) is diagnosed when driving under specific driving conditions.

Substitute Value

Rear heated oxygen sensor (HO2S) control is disabled.

Possible Source

  1. Misfiring
  2. Leakage in the intake system
  3. Leakage in the exhaust system
  4. Faulty fuel pressure
  5. Uneven compression
  6. Damaged catalytic converter.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-400D

Condition

The engine control module (ECM) continuously checks three-way catalytic converter (TWC) efficiency by comparing signals from the rear heated oxygen sensor (HO2S) with the front heated oxygen sensor (HO2S). The diagnostic trouble code (DTC) will be stored if the efficiency of the three-way catalytic converter (TWC) deviates too much.

The diagnostic trouble code (DTC) is diagnosed when driving under specific driving conditions.

Substitute Value

Rear heated oxygen sensor (HO2S) control is disabled.

Possible Source

  1. Misfiring
  2. Leakage in the intake system
  3. Leakage in the exhaust system
  4. Faulty fuel pressure
  5. Uneven compression
  6. Damaged catalytic converter.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4038

Condition

The engine control module (ECM) checks for leaks in the fuel system by taking a reading of the power consumption of the leak diagnosis pump during pressurization.

If a certain pressure is not achieved in the system within a reasonable time, the engine control module (ECM) interprets this as the fuel tank filler cap being incorrectly tightened or missing. The diagnostic trouble code (DTC) can never be stored alone, but is always stored together with ECM-4308, major leak.

The diagnostic trouble code (DTC) can be diagnosed when the leak diagnostic system is run.

Substitute Value

  1. None.

Possible Source

  1. The fuel tank filler cap is not correctly tightened or is missing.

Fault symptom[s]

  1. None.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4050

Condition

Scheme 105

Scheme 105: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4050
Scheme 105: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4050

A fault message is transmitted to the engine control module (ECM) and the diagnostic trouble code (DTC) is stored if a fault in the fuel level sensor is detected by the central electronic module (CEM).

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value

  1. None.

Possible Source

  1. Fault-trace the central electronic module (CEM).

Fault symptom[s]

  1. None.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-405A

Condition

The central electronic module (CEM) transmits information about fuel level and fault status for the fuel level sensor to the engine control module (ECM).

The engine control module (ECM) compares the engine fuel consumption with the change in fuel level over a set period of time. The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers an implausibly small reduction in the fuel level compared with calculated fuel consumption.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers large variations in the fuel level during the time the car is stationary.

Substitute Value

  1. None.

Possible Source

  1. Contact resistance in the connector
  2. Damaged fuel level sensor.

Fault symptom[s]

  1. None.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4201

Condition

The engine control module (ECM) checks the efficiency of the catalytic converter by switching between rich and lean fuel/air mixtures. When the change-over is made, the signal from the rear heated oxygen sensor (HO2S) is checked and the time taken for the probe to switch. The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the rear heated oxygen sensor (HO2S) switches too rapidly. The engine control module (ECM) interprets this as reduced catalytic converter efficiency.

The diagnostic trouble code (DTC) can be diagnosed approximately 15 minutes after the engine is started and if the following requirements are met.

  1. Speed 50-120 km/h
  2. Even load, not driving in the city.

Substitute Value

  1. None.

Possible Source

  1. Air leakage in the exhaust system
  2. Damaged catalytic converter.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-420C

Condition

When the control module activates evaporative emission system (EVAP) control, the idle air trim or short-term fuel trim will change. The diagnostic trouble code (DTC) is stored if the engine control module (ECM) does not detect any change in the idle air trim or in the long term fuel trim when evaporative emission (EVAP) control is active. The engine control module (ECM) interprets this as a damaged evaporative emission (EVAP) system.

Substitute Value

None.

Possible Source

  1. Damaged evaporative emission system (EVAP) valve.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

Scheme 106

Scheme 106
Scheme 106
  1. Slacken off the evaporative emission system (EVAP) valve
  2. Connect a vacuum pump to the evaporative emission system (EVAP) valve terminal (B). Pump a vacuum. Check that there is no leakage through the evaporative emission system (EVAP) valve by listening to and checking via the pump gauge that the pressure is stable
  3. Connect the Evaporative emission system (EVAP) valve connector
  4. Ignition on
  5. Activate the evaporative emission system (EVAP) valve. When the Evaporative emission system (EVAP) valve is activated, the valve opens and clicks. Check on the pump gauge that the vacuum drops (the pressure evens out) when the evaporative emission system (EVAP) valve opens. If the function is OK, there must be no leakage when the evaporative emission system (EVAP) valve is closed (stable pressure on the pump gauge) and the vacuum must drop when the evaporative emission system (EVAP) valve opens (the pressure evens out). The evaporative emission system (EVAP) valve is damaged if the function is faulty. If the function of the evaporative emission system (EVAP) valve is correct, check the hose and hose connections between the evaporative emission system (EVAP) valve for leakage. Remedy as necessary. Other information see «LOCATION OF COMPONENTS, ENGINE COMPARTMENT»(/volvo/v50/i-2007-2012/remont/engine-control-systems/#ignition-and-engine-control-systems-component-location)
  1. Continue Refer to «INFORMATION»(ref-466658-S29991344762012042500000)

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-420C

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-420D

Condition

When the control module activates evaporative emission system (EVAP) control, the idle air trim or short-term fuel trim will change. The diagnostic trouble code (DTC) is stored if the engine control module (ECM) does not detect any change in the idle air trim or in the long term fuel trim when evaporative emission (EVAP) control is active. The engine control module (ECM) interprets this as a damaged evaporative emission (EVAP) system.

Substitute Value

None.

Possible Source

  1. Blocked hose between the EVAP canister and the EVAP canister purge valve
  2. Blocked hose between the evaporative emission system (EVAP) valve and the intake manifold
  3. Damaged evaporative emission system (EVAP) valve.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-420D

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-421B

Condition

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that there is no signal from the evaporative emission system (EVAP) valve.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value

  1. twin heated oxygen sensor (HO2S) control disabled.

Possible Source

  1. Open-circuit in the signal cable
  2. Damaged evaporative emission system (EVAP) valve
  3. Contact resistance in the terminals
  4. Open-circuit in the power cable.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-421B

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-421C

Condition

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the signal from the evaporative emission system (EVAP) valve is too high.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value

  1. twin heated oxygen sensor (HO2S) control disabled.

Possible Source

  1. Short-circuit to supply voltage in the signal cable
  2. Damaged evaporative emission system (EVAP) valve.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-421C

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-421D

Condition

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the signal from the evaporative emission system (EVAP) valve is too low.

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Substitute Value

  1. twin heated oxygen sensor (HO2S) control disabled.

Possible Source

  1. Short-circuit to ground in the signal cable.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-421D

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4308

Condition

The engine control module (ECM) checks for leaks in the fuel system by taking a reading of the power consumption of the leak diagnosis pump during pressurization.

If a certain pressure is not achieved in the system within a reasonable time, the engine control module (ECM) interprets this as leakage from the fuel injection system.

The diagnostic trouble code (DTC) can be diagnosed when the leak diagnostic system is run.

Substitute Value

  1. None.

Possible Source

Minor leak

  1. Leaking fuel tank, fuel filler pipe, fuel tank filler cap, EVAP canister, evaporative emission system (EVAP) valve, or in the hoses between these components.

Major leak

  1. The fuel tank filler cap is not correctly tightened or is missing
  2. Leaking fuel tank, fuel filler pipe, fuel tank filler cap, EVAP canister, evaporative emission system (EVAP) valve, or in the hoses between these components.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

Scheme 107

Scheme 107: CHECKING SOFTWARE
Scheme 107: CHECKING SOFTWARE

Scheme 108

Scheme 108
Scheme 108

Scheme 109

Scheme 109
Scheme 109
  1. Ignition on. Use VCT2000 (or appropriate scan tool) to start the read out and check the software version in the Engine control module (ECM). NOTE: More instructions follow together with the read out.
  1. Continue Refer to «INFORMATION»(ref-466658-S29198371702012042500000)

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-430C

Condition

If the engine control module (ECM) registers that fuel filling has been carried out through the fuel level being changed, the position and installation of the fuel tank filler cap is checked. This is carried out by quicker leak diagnostics.

The check is carried out a few minutes after start if the vehicle speed is constant and exceeds 30 km/h and only if no fault is detected on the leak diagnostic unit.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a leak after filling. This is interpreted as fuel tank filler cap missing or loosely installed.

Substitute Value

None.

Possible Source

  1. The fuel tank filler cap is missing or not tightened.

Fault symptom[s]

  1. None.

CHECKING OTHER DIAGNOSTIC TROUBLE CODES (DTCS), ENGINE CONTROL MODULE (ECM)

HINT: This diagnostic trouble code (DTC) can only be stored after a refueling. The diagnostic detects major leaks in the fuel tank system. The most likely cause is that the fuel tank filler cap has not been installed correctly.

HINT: In the event of a permanent fault, a diagnostic trouble code (DTC) for a "Major leak" will also be stored after the major leak diagnostic is complete.

  1. Check if the diagnostic trouble code (DTC) for "Major leak" is stored in the engine control module (ECM), if so, fault-trace from it instead.
  2. If no diagnostic trouble code for "Major leak" is stored, perform a quick test of the tank system via VEHICLE COMMUNICATION to ensure that the fault was intermittent and probably caused by the fuel tank filler cap?

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-430C

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4310

Condition

Scheme 110

Scheme 110: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4310
Scheme 110: DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4310

The engine control module (ECM) checks the control signal to the leak diagnostic pump.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers a fault in the control signal to leak diagnostic pump.

The diagnostic trouble code (DTC) can be diagnosed when the leak diagnostic system is run.

Substitute Value

  1. Leak diagnostics interrupted.

Possible Source

Signal too high

  1. Short-circuit to supply voltage in the signal cable
  2. Damaged leak diagnostic pump.

Signal too low

  1. Short-circuit to ground in the signal cable
  2. Open-circuit in the signal cable
  3. Damaged leak diagnostic pump.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-4310

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-431A

Condition

The engine control module (ECM) checks the function of the leak diagnostic unit by measuring the current through the leak diagnostic pump.

A diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the voltage curve is rough the engine control module (ECM) interprets this as an incorrect reference reading.

The diagnostic trouble code (DTC) can be diagnosed when the leak diagnostic system is run.

Substitute Value

  1. Leak diagnostics interrupted.

Possible Source

  1. Dirt or damp in the pump
  2. Damaged heater element in the pump
  3. Damaged leak diagnostic pump.

Fault symptom[s]

  1. Malfunction indicator lamp (MIL) lit.

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-431B

Condition

The engine control module (ECM) checks the control signal to the heater element in the leak diagnostic unit.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal is missing.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value

None.

Possible Source

  1. Open-circuit in the signal cable
  2. Damaged leak diagnostic pump.

Fault symptom[s]

  1. None.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-431B

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-431B

DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-431C

Condition

The engine control module (ECM) checks the control signal to the heater element in the leak diagnostic unit.

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal is too high.

The diagnostic trouble code (DTC) can be diagnosed when the leak diagnostic system is run.

Substitute Value

None.

Possible Source

  1. Short-circuit to supply voltage in the signal cable.
  2. Damaged leak diagnostic pump.

Fault symptom[s]

  1. None.

See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-431C

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