13. Turbo Boost Test

13. TURBO BOOST TEST

Purpose:
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 charge air cooler (CAC) tubes/connections, turbocharger connections, exhaust system and MAP hose for signs of damage or leaks.
- Carry out the Powertrain Air Management Turbo Boost Test using the scan tool.







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.
- Refer to the scan tool information menu for examples of turbo boost test results.

- Ignition on, engine running.
- Carry out the Powertrain Air Management Turbo Boost Test using the scan tool.

If the test fails, GO to Pinpoint Test KA. Test KA: Turbocharger System Performance

Possible Causes:
- MAP hose pinched or open
- Leaking intake, hoses or fittings
- Leaking exhaust system
- Turbocharger
- Base engine
- CAC hoses leaking
- CAC
- EGR sticking

Tools Required
Scan tool

Tool, vane position sensor cable kit 418-626 or equivalent