Diagnostic Trouble Code (DTC) Information ECM-3300

Condition 

Fig 1: Crankshaft Position Sensor

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 in the engine control module (ECM) if it detects that the signal from the engine speed (RPM) sensor is lower than the calculated engine speed (RPM) from the camshaft position (CMP) 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
• Damaged carrier plate.

Fault symptom[s] 

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