Faulty Signal

ECM-903F THROTTLE UNIT, INTERNAL FAULT
FAULTY SIGNAL

Reading of DTC status ECM-903F



Note! When Reading the DTC status, other stored diagnostic trouble codes (DTCs) and their status will be listed.

- Read the DTC status. Check the status of the relevant Diagnostic Trouble Code (DTC).

Was the status of the relevant Diagnostic Trouble Code (DTC) displayed as permanent?
Yes - Skip to "Replacing Throttle Unit and Programming"
No - Continue below.


Fault-tracing information
Engine control module (ECM) previously registered a fault in communication with the throttle unit but has detected that the fault is no longer present.


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


Replacing Throttle Unit and Programming
- The engine control module (ECM) has registered an internal fault in the throttle unit.

Caution! A new throttle unit is delivered without software. For the throttle unit to function after replacement it must be programmed.

For further information about programming and replacing the throttle unit, Electronic Throttle Module (ETM), Replacing


Fault-tracing information
Fault-tracing is not followed by verification for this fault.