Checking The Status

HINT: Diagnostic trouble code (DTC) may be caused by a damaged fuse. Check the fuse for the power supply to the camshaft reset valve.

Fig 1: Engine Start Verification

Courtesy of VOLVO CARS CORPORATION

Start the engine
Read off the value for the camshaft closing angle and the desired value for the camshaft closing angle
Active the quick test of camshaft control by clicking the start button
Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed.
When the engine speed (RPM) increases, the control module will start the quick test to guide the camshaft to the different target values.

During the quick test, check that the closing angle of the camshaft (actual value) corresponds to the desired camshaft closing angle (target value) to an accuracy of ±10°. If the values do not correspond to an accuracy of ±10°, the function is faulty.

Deviation between the values can be read off in the lower display.

Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. When the desired value is stable once again, the test has been completed. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM again.

The fault is intermittent if the function is OK.

NOTE:
The test is active until the ignition is switched off. Switch off the ignition before the vehicle is delivered to the customer.

Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA (Volvo Scan Tool)
Courtesy of VOLVO CARS CORPORATION