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Home >> Volvo >> 2002 >> V70 2.4T AWD L5-2.4L Turbo VIN 58 B5244T3 >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> ECM Codes (Engine Control Module) >> ECM-431D >> Signal Missing >> Part 1

Part 1






Signal missing

Checking other diagnostic trouble codes (DTCs), engine control module (ECM)
Note! The quick test of the fuel tank system must be activated when running this fault-tracing. When activating the quick test of the fuel tank system, diagnostic trouble code (DTC) ECM-4000, ECM-4007, ECM-4010, or ECM-4024 must not be stored. Check that none of these diagnostic trouble codes (DTCs) are stored.

- Ignition on
- Activate reading off diagnostic trouble codes (DTCs).
If any of these diagnostic trouble codes (DTCs) are stored they must be remedied and erased first.





Is diagnostic trouble code (DTC) ECM-4000, ECM-4007, ECM-4010, or ECM-4024 stored?

Yes - DONE

No - Checking the status

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Checking the status




- The status of the fault can be determined by activating a quick test of the fuel tank system
- The fault is permanent if a fault is detected in the leak diagnostic unit when running the quick test of the fuel tank system
- The fault is intermittent if no fault is detected in the leak diagnostic unit when running the quick test of the fuel tank system
- Switch off the ignition to ensure that the status of the quick test for the fuel tank system is "NOT COMPLETED". The test cannot be started if the status is "COMPLETED"
- Ignition on
- Activate the quick test of the fuel tank system
- Read off the battery voltage, the status of the quick test of the fuel tank system and the status of the test phase. Check the parameters according to the conditions for starting the quick test of the fuel tank system.

Note! The following conditions must be met in order for the quick test of the fuel tank system to be run correctly.
Conditions for starting the quick test of the fuel tank system
1. Diagnostic trouble codes (DTC) ECM-4000, ECM-4007, ECM-4010, or ECM-4024 are not stored
2. Engine off, ignition on
3. The battery voltage must be 11-14 V
4. The status of the test phase must be "NOT RUNNING".
5. The status of the quick test for the fuel tank system must be "NOT COMPLETED".

Note! The battery voltage must be correct throughout the entire test. The test can take up to 10 minutes, depending on the quantity of fuel in the fuel tank. Connect a battery charger if necessary.

- Active the quick test for the fuel tank system by clicking the start button. Click the stop button to cancel the test.
Check that the quick test has started by reading off the status of the test phase. The test has started when the status of the test phase is "REFERENCE 1".
Wait until the test is complete. When the test is completed, the status of the test phase must be "NOT RUNNING" and the status of the quick test for the fuel tank system must be "COMPLETED".
If no faults are detected after the quick test of the fuel tank system, the test result for the leak diagnostic module and the fuel tank system will be "NO FAULT FOUND".
If a fault is detected after the quick test of the fuel tank system is complete, the test result for the fuel tank system or leak diagnostic unit will be "FAULT FOUND" with the fault type, depending on the fault.

Hint: If the test result is "FAULT FOUND" and the fault type is displayed after the completed test, a diagnostic trouble code (DTC) for the fault will be stored in the control module.

Other information
- For further information about leak diagnostics, see Leak diagnostics (certain markets only) Leak Diagnostics (Certain Markets Only)
- For information about test phases, see Test phases Test Phases.

Select an alternative to continue when the test is completed:
1. The test result for the fuel tank system and leak diagnostic unit is "OK, NO FAULT FOUND"
2. The test result for the leak diagnostic unit is "FAULT FOUND" (with the fault type)
3. The quick test does not start
4. The test result for the fuel tank system is "FAULT FOUND" (with the fault type).





1 - Intermittent fault

2 - Checking components and wiring

3 - Fault-tracing information:

4 - Fault-tracing information:

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Checking components and wiring
Check the leak diagnostic unit connectors. Check for contact resistance and oxidation.
Check the resistance of the pump motor between the leak diagnostic unit connector terminals #1 and #4 (leak diagnostic pump side).
Check the hose between the leak diagnostic unit and the EVAP canister. Check for blockages.
Try a new leak diagnostic unit if no fault is found during the above fault-tracing.
Remedy as necessary.

Other information:
- For resistance values, see Component specifications Specifications
- To connect the breakout box, see Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
- To access or replace the leak diagnostic unit, see Leak diagnostic pump, replacing Service and Repair
- To check the hoses, see Leak diagnostic pump, replacing Service and Repair
- For information about signals on 5 cylinder engines, see Signal specification Signal Description / Specification
- For information about signals on 6 cylinder engines, see Signal specification Signal Description / Specification
- Checking wiring and terminals Checking Wiring And Terminals.













Continue - Verification

-------------------------------------------------

Fault-tracing information:
- The control module is unable to run the reference phase to test the leak diagnostic unit. This may be because the conditions for starting the quick test of the fuel tank system have not been met, that the fault occurred during fault-tracing or that the fault existed before the fault-tracing began. Check that the hoses, connectors and components etc have been correctly reinstalled. Check that they are not damaged.

Hint: Exit the fault-tracing for this fault. Then read off the diagnostic trouble codes (DTCs) from the vehicle communication socket (central electronic module (CEM)). Fault trace any other diagnostic trouble code (DTC) that is stored in the control module.

- Remedy as necessary.

Select a suitable alternative to continue:
1. Start this fault-tracing from the beginning again
2. Cancel fault-tracing for this fault.

1 - engine control module (ECM)

2 - DONE

-------------------------------------------------

Fault-tracing information:
- The control module has detected leakage in the fuel tank system. This may be because the fault existed before the fault-tracing was begun or that the fault occurred during the fault tracing. The fault is not relevant for this diagnostic trouble code (DTC) test.

Hint: Check that the hoses, components etc have been correctly reinstalled. Check that they are not damaged.

- Remedy as necessary.

Select a suitable alternative to continue:
1. Start this fault-tracing from the beginning again
2. Fault trace for leakage in the fuel tank system
3. Finish fault-tracing.

1 - engine control module (ECM)

2 - ECM-400C

3 - DONE

-------------------------------------------------

ECM-400C





Leakage

Checking other diagnostic trouble codes (DTCs)
Note! The quick test of the fuel tank system must be activated when running this fault-tracing. When activating the quick test of the fuel tank system, diagnostic trouble code (DTC) ECM-4000, ECM-4007, ECM-4010, or ECM-4024 must not be stored. Check that none of these diagnostic trouble codes (DTCs) are stored.

- Ignition on
- Read off diagnostic trouble codes (DTCs).
If any of these diagnostic trouble codes (DTCs) are stored they must be remedied and erased first.





Is diagnostic trouble code (DTC) ECM-4000, ECM-4007, ECM-4010, or ECM-4024 stored?

Yes - No Fault Found

No - Checking the status

------------------------

Checking the status




- The status of the leak can be determined by activating the quick test of the fuel tank system
- The fault is permanent if leakage is detected when running the quick test of the fuel tank system
- The fault is intermittent if no leakage is detected when running the quick test of the fuel tank system
- Switch off the ignition to ensure that the status of the quick test for the fuel tank system is "NOT COMPLETED". The test cannot be started if the status is "COMPLETED"
- Ignition on
- Activate the quick test of the fuel tank system
- Read off the battery voltage, the status of the quick test of the fuel tank system and the status of the test phase. Check the parameters according to the conditions for starting the quick test of the fuel tank system.

Note! The following conditions must be met in order for the quick test of the fuel tank system to be run correctly.
Conditions for starting the quick test of the fuel tank system
- Diagnostic trouble codes (DTC) ECM-4000, ECM-4007, ECM-4010, or ECM-4024 are not stored
- Engine off, ignition on
- The battery voltage must be 11-14 V
- The status of the test phase must be "NOT RUNNING".
- The status of the quick test for the fuel tank system must be "NOT COMPLETED".

Note! The battery voltage must be correct throughout the entire test. The test can take up to 10 minutes, depending on the quantity of fuel in the fuel tank. Connect a battery charger if necessary.

- Active the quick test for the fuel tank system by clicking the start button. Click the stop button to cancel the test.
Check that the quick test has started by reading off the status of the test phase. The test has started when the status of the test phase is "REFERENCE 1".
Wait until the test is complete. When the test is completed, the status of the test phase must be "NOT RUNNING" and the status of the quick test for the fuel tank system must be "COMPLETED".
If no faults are detected after the quick test of the fuel tank system, the test result for the leak diagnostic module and the fuel tank system will be "NO FAULT FOUND"
If a fault is detected after the quick test of the fuel tank system is complete, the test result for the fuel tank system or leak diagnostic unit will be "FAULT FOUND" with the fault type, depending on the fault.

Hint: If the test result is "FAULT FOUND" and the fault type is displayed after the completed test, a diagnostic trouble code (DTC) for the fault will be stored in the control module.

Other information:
- For further information about leak diagnostics, see Leak diagnostics (certain markets only) Leak Diagnostics (Certain Markets Only)
- For further information about leak diagnostic parameters, see Description of parameters, quick test of the fuel tank system Description of Parameters, Quick Test of the Fuel Tank System
- For information about test phases, see Test phases Test Phases.

Select an alternative to continue when the test is completed:
1. The test result for the fuel tank system and leak diagnostic unit is "OK, NO FAULT FOUND".
2. The test result for the fuel tank system is "FAULT FOUND, MAJOR LEAK" or "FAULT FOUND, MINOR LEAK".
3. The quick test does not start or the test result for the leak diagnostic unit is "FAULT FOUND" (and the fault type).





1 - Intermittent fault

2 - Checking components

3 - Fault-tracing information:

------------------------

Checking components
- Check that the fuel tank filler cap is properly installed and that its seal is not damaged
- Check the hoses and connections on the leak diagnostic unit, the EVAP canister, EVAP canister purge valve and fuel filler pipe visually for damage or loose installation
- Remedy as necessary.

Hint: Diagnostic trouble codes (DTCs) caused by a loose fuel filler cap or hose connection may be difficult to find. If no leakage if detected by the control module when activating the quick test of the fuel tank system after the above checks and remedies, the fault may have been fixed.

Other information
- To test pressurize the fuel tank system, see Test pressurizing the tank system Testing and Inspection.





Press "Continue" to carry out the quick test of the fuel tank system

Continue - Activating the quick test of the fuel tank system

------------------------

Activating the quick test of the fuel tank system

Hint: The fault remains if leakage is detected when running the quick test of the fuel tank system If no leakage
is detected, the fault has been repaired.

- Switch off the ignition to ensure that the status of the quick test for the fuel tank system is "NOT COMPLETED". The test cannot be started if the status is "COMPLETED"
- Ignition on
- Activate the quick test of the fuel tank system
- Read off the battery voltage, the status of the quick test of the fuel tank system and the status of the test phase. Check the parameters according to the conditions for starting the quick test of the fuel tank system.

Note! The following conditions must be met in order for the quick test of the fuel tank system to be run correctly.
Conditions for the quick test of the fuel tank system to start:
- Diagnostic trouble codes (DTC) ECM-4000, ECM-4007, ECM-4010, or ECM-4024 are not stored
- Engine off, ignition on
- The battery voltage must be 11-14 V
- The status of the test phase must be "NOT RUNNING".
- The status of the quick test for the fuel tank system must be "NOT COMPLETED".

Note! The battery voltage must be correct throughout the entire test. The test can take up to 10 minutes, depending on the quantity of fuel in the fuel tank. Connect a battery charger if necessary.

- Active the quick test for the fuel tank system by clicking the start button. Click the stop button to cancel the test.
Check that the quick test has started by reading off the status of the test phase. The test has started when the status of the test phase is "REFERENCE 1".
Wait until the test is complete. When the test is completed, the status of the test phase must be "NOT RUNNING" and the status of the quick test for the fuel tank system must be "COMPLETED".
If no faults are detected after the quick test of the fuel tank system, the test result for the leak diagnostic module and the fuel tank system will be "NO FAULT FOUND"
If a fault is detected after the quick test of the fuel tank system is complete, the test result for the fuel tank system or leak diagnostic unit will be "FAULT FOUND" with the fault type, depending on the fault.

Other information
- For further information about leak diagnostics, see Leak diagnostics (certain markets only) Leak Diagnostics (Certain Markets Only)
- For further information about leak diagnostic parameters, see Description of parameters, quick test of the fuel tank system Description of Parameters, Quick Test of the Fuel Tank System
- For information about test phases, see Test phases Test Phases.

Select an alternative to continue when the test is completed:
1. The test result for the fuel tank system and leak diagnostic unit is "OK, NO FAULT FOUND".
2. The test result for the fuel tank system is "FAULT FOUND, MAJOR LEAK" or "FAULT FOUND, MINOR LEAK".
3. The quick test does not start or the test result for the leak diagnostic unit is "FAULT FOUND" (and the fault type).





1 - Fault Found

2 - Checking the EVAP canister purge valve

3 - Fault-tracing information:

------------------------

Checking the EVAP canister purge valve

Hint: Leakage through the EVAP canister purge valve can be checked by blocking the hose between the EVAP canister and the purge valve and then running the quick test of the fuel tank system. If leakage was detected in a previous quick test of the fuel tank system but is not now detected when the hose between the EVAP canister and the purge valve is blocked, the leakage may be through the EVAP canister purge valve.

- Disconnect the hose between the EVAP canister purge valve and the EVAP canister from the connection to the EVAP canister purge valve. Block the hose while running the quick test of the fuel tank system.

Other information:
- For the location of components on 5 cylinder engines, see Location of components Locations
- For the location of components on 6 cylinder engines, see Location of components Locations.





Press "Continue" to carry out the quick test of the fuel tank system

Continue - Activating the quick test of the fuel tank system

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