Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




If Electronic throttle module (ETM) registers that voltage feed is lower than 9 V for more than 9 minutes or is higher than 16 V for more than 5 seconds with the ignition on, then this information is sent to Engine control module (ECM) which then stores diagnostic trouble code ECM-91E0, Faulty voltage.
For upgraded software, released during year 2006 or later, certain adjustments have been made. If voltage is below 9 V or above 16.5 V for more than 30 seconds, with the engine running, the information is sent to Engine control module (ECM).

For more information about the electronic throttle system and related components such as the electronic throttle module, accelerator pedal position sensor, brake light switch, clutch pedal position sensor, and brake pedal position sensor: Design Design

Substitute value
None.

Possible source
- the power supply to the throttle unit
- loose connections or contact resistance in the connectors
- poorly charged battery or corroded in the connecting cables
- defective generator (GEN) or charge regulator.

Fault symptom[s]
None.