Signal Too High - Permanent Fault

ECM-23X0 INJECTOR X
SIGNAL TOO HIGH - PERMANENT FAULT

Checking wiring and components



Check injector resistance between terminals 1 and 2.

Check cable between injector terminal 2 and control module:
- #A16 (#A16) (ECM 2310)
- #A34 (#A34) (ECM 2320)
- #A15 (#A15) (ECM 2330)
- #A33 (#A33) (ECM 2340)
- #A14 (#A14) (ECM 2350)
for a short-circuit to supply voltage according to Checking Wiring and Terminals

Hint: Use an electrician's screwdriver with at least a 3 W bulb to determine whether the cable is short-circuited to supply voltage.

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.