Diagnostic Trouble Code (DTC) Information ECM-330B

Condition 

Fig 1: Detecting The Reference Positions Of The Camshaft

Courtesy of VOLVO CARS CORPORATION

The engine control module (ECM) checks the signal from the engine speed (RPM) sensor. The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that there is no signal from the engine speed (RPM) sensor.

The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value 

• The control module uses the signal from the camshaft position (CMP) sensor if the camshaft position (CMP) sensor has been adapted.

Possible Source 

• Open-circuit in the signal cable or ground lead
• Short-circuit to ground or supply voltage in the signal cable
• Contact resistance in the terminals
• Damaged engine speed (RPM) sensor.

Fault symptom[s] 

• The starter motor turns but the engine does not start
• The engine stops.