Diagnostic Trouble Code (DTC) Information ECM-3110

Condition

Fig 1: Detecting The Reference Positions Of The Camshaft

Courtesy of VOLVO CARS OF NORTH AMERICA.

The control module calculates the number of teeth on the flywheel using the engine speed (RPM) sensor. The diagnostic trouble code (DTC) (Signal too high) is stored if the control module detects at least one tooth too many or too few during a certain number of engine revolutions.

The control module detects the position of the flywheel for top dead center (TDC) using the engine speed (RPM) sensor signal. The diagnostic trouble code (DTC) is stored if the control module is unable to detect top dead center (TDC) on the flywheel (Faulty signal) or if the reference position for TDC is missing sporadically (Signal missing).

Substitute Value

The control module uses the signal from the camshaft position (CMP) sensor if the camshaft position (CMP) sensor has been adapted
Variable valve timing control is blocked
Engine speed (RPM) is limited.

Possible Source

Signal too high

Signal interference
Incorrectly installed engine speed (RPM) sensor
Damaged flywheel or ring gear.

Faulty signal

Signal interference
Contact resistance in the terminals
Incorrectly installed engine speed (RPM) sensor
Intermittent fault causes in the engine speed (RPM) sensor wiring.

Signal missing

Signal interference
Contact resistance and oxidation.

Fault symptom[s]

The engine is difficult to start
Poor performance.