13. Turbo Boost Test
13. TURBO BOOST TESTPurpose:
The purpose of this test is to determine if the engine can develop sufficient boost to obtain specific power.
Turbo Boost Test
- Carefully inspect the intercooler tubes/connections, turbocharger connections, and MAP hose for signs of damage or leaks.
- Carry out the boost pressure test at 3,300 RPM minimum.
Recommended Procedure:
Note: If a sensor fails the turbo boost test, the test will abort. Refer to the appropriate sensor pin point test to continue diagnosis.
Note: Refer to the diagnostic tool information menu for examples of turbo boost test results.
- Key on, engine running.
- Carry out the Powertrain Air Management Turbo Boost Test using the diagnostic tool. Tests KA: Turbocharger System Performance
Possible Causes:
- MAP hose pinched or open
- Leaking intake, hoses or fittings
- Leaking exhaust system
- Turbocharger
- Base engine
- Intercooler hoses leaking
- Intercooler
- EGR sticking
Tools Required
- Diagnostic tool
- Tool, vane position sensor cable kit 418-626 or equivalent