ASE T2 Domain 8: Engine Brakes Welcome to your ASE T2 Domain 8: Engine Brakes 1. ASE T2: Engine Brakes When diagnosing an engine brake that fails to activate, which of the following electrical checks should be performed first? A. Testing the engine brake solenoid resistance B. Checking for supply voltage at the engine brake switch C. Inspecting the integrity of the engine brake ground circuit D. Measuring the current draw of the engine brake circuit None 2. ASE T2: Engine Brakes A technician is troubleshooting an engine brake system and finds that the engine brake is not engaging on one of the cylinders. This could be due to: A. Faulty engine brake housing B. Damaged engine brake control valve C. Improper valve lash adjustment D. Defective engine brake solenoid for that cylinder None 3. ASE T2: Engine Brakes During the operation of the engine brake, a loud snapping noise is heard followed by the loss of braking efficiency. This MOST likely indicates: A. A broken engine brake actuator spring B. Worn engine brake rocker arm C. Leaking exhaust manifold D. Malfunctioning turbocharger None 4. ASE T2: Engine Brakes If an engine brake produces weak braking effect only at high RPMs, the technician should FIRST check the: A. Engine brake control valve clearance B. Condition of the engine brake solenoids C. Exhaust backpressure D. Turbocharger boost pressure None 5. ASE T2: Engine Brakes A diesel engine equipped with an engine brake is experiencing fluctuating braking power. This issue is MOST likely caused by: A. Inconsistent fuel delivery B. Irregular engine compression C. Variable exhaust backpressure D. Electrical faults in the engine brake wiring None 6. ASE T2: Engine Brakes What component is essential for an engine brake's operation that is NOT used in normal engine operation? A. Intake manifold B. Turbocharger C. Exhaust valve actuator D. Fuel injector None 7. ASE T2: Engine Brakes Technician A says that a poorly adjusted Jake Brake can cause valve and rocker arm damage. Technician B says that engine brakes have no effect on engine valve components. Who is correct? A. Technician A only B. Technician B only C. Both Technician A and B D. Neither Technician A nor B None 8. ASE T2: Engine Brakes When an engine brake is not functioning properly, which of the following diagnostic steps is most appropriate after verifying proper electrical operation? A. Checking for proper pneumatic system operation B. Measuring the engine's compression ratio C. Inspecting the condition of the turbocharger D. Analyzing the engine oil for contaminants None 9. ASE T2: Engine Brakes A properly functioning engine brake should: A. Decrease the engine's operating temperature B. Increase the turbocharger's efficiency C. Reduce the load on the service brakes D. Improve the engine's fuel economy None 10. ASE T2: Engine Brakes The activation of an engine brake in a diesel engine results in increased: A. Intake manifold pressure B. Exhaust system temperature C. Cylinder compression D. Fuel consumption None 1 out of 10 Time is Up! Time's up
