Symptom:
*CHECKING THE TURBOCHARGER OPERATION
POSSIBLE CAUSES
CHECKING THE TURBOCHARGER HOSES
CHECKING THE WASTEGATE HOSE
TURBOCHARGER
WASTEGATE ACTUATOR ARM OPERATION
WASTEGATE RESTRICTION
TEST
ACTION
APPLICABILITY
1
NOTE: The exhaust system must be free from any restriction to perform this
test.
Check the turbocharger outlet hose between the turbocharger and the intake
manifold and the turbocharger inlet hose between the turbocharger and the air
cleaner for loose connection, damage or restriction.
Are any of these conditions evident?
All
Yes
→
Repair or replace as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Go To
2
2
Check the wastegate actuator supply hose for loose connection, damage or restriction.
Are any of these conditions evident?
All
Yes
→
Repair or replace as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Go To
3
3
Disconnect the Wastegate Actuator Supply Hose from the intake manifold.
Using an air pressure regulator, connect an air hose to the disconnected end of the
Wastegate Actuator Supply Hose.
Start at 0 kPa (0 PSI) and slowly increase air pressure to 310 kPa (45 PSI) while
monitoring the Wastegate Actuator Arm.
NOTE: The Wastegate Actuator Arm should remain closed until air pressure
reaches 117-138 kPa (17-20 PSI) and fully open when the air pressure
reaches 234-276 kPa (34-40 PSI).
Did the Wastegate Actuator unseat and fully open as described?
All
Yes
→
Go To
4
No
→
Go To
5
191
DRIVEABILITY - DIESEL