Faulty Signal

Faulty signal

Checking the status




- Ignition on.
Activate the injector that relates to the diagnostic trouble code (DTC) to check whether the fault is permanent or intermittent.
The fault is intermittent if the injector clicks when activated. The fault is permanent if the injector does not click when activated.










Continue - Checking the component and wiring

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Checking the component and wiring
Check the connector for the injector that relates to the diagnostic trouble code (DTC). Check for contact resistance. Check for oxidation.
Check between terminals #1 and #2 in the injector that relates to the diagnostic trouble code (DTC). Check the resistance.
Check the power supply cable between the system relay and terminal #1 in the injector that relates to the diagnostic trouble code (DTC). Check for an open-circuit.
Check the cable that relates to the diagnostic trouble code (DTC). Check for a short-circuit to supply voltage. Check for a short-circuit to ground. Check for an open-circuit.
Check between:
- Engine control module (ECM) terminal #A84 (#B24) and injector terminal #2 (ECM-2300)
- Engine control module (ECM) terminal #A83 (#B23) and injector terminal #2 (ECM-2310)
- Engine control module (ECM) terminal #A82 (#B22) and injector terminal #2 (ECM-2320)
- Engine control module (ECM) terminal #A81 (#B21) and injector terminal #2 (ECM-2330)
- Engine control module (ECM) terminal #A80 (#B20) and injector terminal #2 (ECM-2340).
Remedy as necessary.

Other information
- Connecting the breakout box Connecting The Breakout Box, Engine Control Module (ECM)
- Signal specification Signal Specification, Engine Control Module (ECM)
- Component specification [1][2]Electrical Specifications
- Fuel injection supply manifold Service and Repair
- Checking wiring and terminals Checking Wiring and Terminals














Continue - Verification

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Verification




Verification

Verification

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








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Activate the injector that relates to the diagnostic trouble code (DTC). A "click" should be heard when the injector is activated.





Is the function OK?

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
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.

Do you want to view the information again?

Yes - Attempt New Test

No - Fault Found

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Attempt New Test - Checking the status

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