Faulty Signal

ECM-23X0 INJECTOR X
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION

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 - Continue below.
No - Skip to "Checking the connector"


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


Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
--Testing Complete--


Checking the connector



- Ignition off.

Check the injector connector. Check for contact resistance and oxidation according to [1][2]Checking Wiring and Terminals. Permanent Fault

Remedy as necessary.

Other information
- To access/replace the injector, Injectors/Pulsation Dampers, Replacing


Checking the Component



- 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/replace the injector, Injectors/Pulsation Dampers, Replacing

Is the injector working?
Yes - Testing Complete.
No - Continue below.


Checking injectors



Check the cable between injector terminal 2 and 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
for an open-circuit according to [1][2]Checking Wiring and Terminals. Permanent Fault, a short-circuit to supply voltage according to [1][2]Checking Wiring and Terminals. Permanent Fault and a short-circuit to ground according to [1][2]Checking Wiring and Terminals. Permanent Fault

Check resistance between terminals 1 and 2 on the injector. It should be 10 - 20 (ohm) at 20°C.

Check the cable between injector connector terminal 1 and fuse 3 in the integrated relay/fusebox in the engine compartment for an open-circuit according to [1][2]Checking Wiring and Terminals. Permanent Fault

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

Remedy as necessary.


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 - Testing Complete
No - Continue Below.


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.