Diagnostic trouble code (DTC) status ECM-1000 Engine control module (ECM), internal fault. Signal too low

Reading of DTC status ECM-1000 

NOTE:

When reading off the DTC status, other stored diagnostic trouble codes (DTCs) and their status will be listed.

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

Fig 1: Identifying VCT2000 Diagnostic Tool

Courtesy of VOLVO CARS OF NORTH AMERICA.

Was the status of the relevant Diagnostic Trouble Code (DTC) displayed as permanent? 

• YES 

  Refer to Replacing engine control module (ECM) 

• NO 

  Refer to Signal too low. Intermittent fault