Faulty Signal

Faulty signal

Checking for intermittent faults




- Activate the relevant injector.
A click should be heard from the injector when it is activated.





Is the injector working?

Yes - Fault-tracing information

No - Checking the connector

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Checking the connector




- Ignition off.
Check the injector connector. Check for contact resistance and oxidation.
Remedy as necessary.

Other information
- To access or replace the injector, see Injector/pulse damper, replacement Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals.






Continue - Checking the connector

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Checking the connector








- Ignition off
- Reinstall the components, reconnect the connectors etc.
- Ignition on
- Activate the injector which caused the diagnostic trouble code (DTC) to be stored
- A click should be heard from the injector when it is activated.
If the injector is now OK, the fault was caused by poor contact in the connector.

Other information
- To access or replace the injector, see Injector/pulse damper, replacement Service and Repair.





Is the injector working?

Yes - Fault Found

No - Checking injectors

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Checking injectors








Check the cable between injector terminal 2 and the control module:
- terminal #16 for ECM-2300
- terminal #34 for ECM-2310
- terminal #15 for ECM-2320
- terminal #33 for ECM-2330
- terminal #14 for ECM-2340.
Check for an open-circuit. Check for short-circuit to supply voltage. Check for a short-circuit to ground.
Check the resistance between terminals #1 and #2 on the injector. It should be 10-20 ohms at approximately 20°C.
Check the cable between injector connector terminal #1 and fuse 3 in the integrated relay / fusebox in the engine compartment. Check for an open-circuit.

Hint: With the ignition on, the voltage between injector terminal 1 and ground terminal must be battery voltage.

Remedy as necessary.

Other information
- Checking wiring and terminals Checking Wiring And Terminals.










Continue - Verification

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Fault-tracing information
The control module has previously registered a fault. The fault is now no longer present.


Continue - Fault-tracing information

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Fault-tracing information




Information

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).

Do you want to view the information again?

Yes - Attempt New Test

No - Fault Found

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Attempt New Test - Checking for intermittent faults

FAULT FOUND - DONE

DONE - DONE

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Verification




Verification

Verification

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








- Ignition off.
- Reconnect connectors, reinstall components
- Ignition on.
- Activate the relevant injector.
A click should be heard from the injector when it is activated.





Is the injector working?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - Fault Found

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Fault-tracing information




Information

Fault-tracing information
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.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking for intermittent faults

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