I sure hope you are not Towing in OVERDRIVE...
If a P2563 is found, it may be caused by an unstable Solenoid Control
Valve (SCV). Unstable SCV operation may be induced by engine debris or
sludge. To diagnose an unstable SCV complete the procedure below.
Test the VPS (Vane Position Sensor) operation. Actuate the VPS plunger
and monitor the sensor voltage on the Tech 2. The VPS body should be
grounded during this test. Touch the brass body of the VPS to the turbo
center housing to complete the ground. Voltage should go from 4.9v to
0.25v as the plunger is depressed. If the sensor operates correctly, go
to next step, or replace the VPS as necessary.
Note: It's normal for voltage to jump back to 4.9v if the plunger is completely depressed.
Command turbo vane position from 10% to 90%, back and forth, several
times. During each cycle, monitor the actual turbo vane position sensor
reading. The vane position should reach the desired position, and hold
steady. If vane position oscillates back and forth more than 5% before
stabilizing at the desired position, replace the solenoid control valve.
Note: Debris or sludge build up in the SCV can cause the valve's
stability to deteriorate. This can be aggravated by not following oil
change intervals and/or extended idling in combination with use of
Please follow this diagnostic or repair process thoroughly and complete
each step. If the condition exhibited is resolved without completing
every step, the remaining steps do not need to be performed.
on Apr 19, 2013