Signal Missing - Permanent Fault

ECM-23X0 INJECTOR X
SIGNAL MISSING - PERMANENT FAULT

Checking the connector



- Ignition off
- Check the injector connector for contact resistance and oxidation according to Checking Wiring and Terminals
- Reinstall the components, reconnect the connectors etc.
- Ignition on.
- Activate the injector.

A "click" should be heard when the injector 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
- For information about signals, see Diagnostic Parameters and Pinout Values. Pinout Values and Diagnostic Parameters

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


Checking components and wiring



Check the resistance of the injector between terminals 1 and 2.

Check the cable between injector terminal 2 and control module:
- terminal #A16 (#A16) (ECM 2310)
- terminal #A34 (#A34) (ECM 2320)
- terminal #A15 (#A15) (ECM 2330)
- terminal #A33 (#A33) (ECM 2340)
- terminal #A14 (#A14) (ECM 2350)
and the power supply between system relay terminal 3 and injector terminal 1 for an open-circuit according to Checking Wiring and Terminals

Remedy as necessary.

Other information
- Connecting the breakout box/accessing the control module, Connecting the Breakout Box (ECM)
- To access/replace the injector, Injectors/Pulsation Dampers, Replacing
- For resistance values, see Component Specifications. Electrical Specifications
- For information about signals, see Diagnostic Parameters and Pinout Values. Pinout Values and Diagnostic Parameters


Verification



Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reconnect connectors, reinstall components etc.
- Ignition on.
- Activate the relevant injector.

A "click" should be heard when the injector 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.