Questions And Answers PDF Format: For More Information – Visit link below: https://www.certsgrade.com/ Version = Product CERTSGRADE High Grade and Valuable Preparation Stuff Skilled Trades ASE-L1 Automotive Service Excellence: Advanced Engine Performance Visit us athttps://www.certsgrade.com/pdf/ase-l1/ Latest Version: 6.0 Question: 1 Technician A states modifying and adjusting a TPS can sometimes help improve idle quality. Technician B states modifying and adjusting a TPS can increase emissions and fuel consumption. Who is correct? A. Both A and B B. Neither A nor B C. Technician A D. Technician B Answer: A Explanation: Both technicians are correct. Sometimes a vehicle owner may modify and adjust the TPS to improve idle quality. However, although the idle may improve, the entire fuel control program for the vehicle will be thrown out of range. This can result in increased emissions and fuel consumption. Question: 2 A vehicle has very high HC emissions and very low CO emissions. Which of the following is the most likely cause? A. A blown head gasket B. An ignition misfire C. Leaking fuel injectors D. A vacuum leak Answer: D Explanation: Very high HC levels combined with very low CO levels indicates a lean condition. One of the most common causes of such a misfire is a vacuum leak. Question: 3 Technician A says if there is an oxygen sensor code stored in the PCM, the catalytic converter monitor will not run. Technician B says if there is an oxygen sensor code stored in the PCM, the misfire monitor will not run. Who is correct? A. Both A and B B. Neither A nor B Visit us athttps://www.certsgrade.com/pdf/ase-l1/ C. Technician A D. Technician B Answer: C Explanation: Only technician A is correct. Since oxygen sensors are used to monitor catalytic converter efficiency, an O2 sensor code stored in the PCM will prevent the catalytic converter monitor from running. The misfire monitor runs continuously, so technician B is wrong. Question: 4 The composite vehicle is being discussed. A fault in the throttle actuator motor circuit will result in the throttle opening being reduced or increased to: A. 10% B. 15% C. 30% D. 0% Answer: B Explanation: The composite vehicle uses a bidirectional pulse-width modulated DC motor to control the position of the throttle plate. In the event of a motor circuit problem, the control module will reduce or increase throttle opening to 15%. Question: 5 A technician is testing cam actuator solenoid resistance on the composite vehicle. What should the readings be? A. 8 +/- 2 ohms B. 6 +/- 2 ohms C. 12 +/- 2 ohms D. 10 +/- 2 ohms Answer: C Explanation: The composite vehicle is equipped with Variable Valve Timing (VVT). This system uses ECM-controlled solenoids to supply oil pressure to the cam actuators. Solenoid resistance should be 12 +/- 2 ohms. Question: 6 Visit us athttps://www.certsgrade.com/pdf/ase-l1/ A technician measures a resistance of 120 ohms between pin 6 and pin 14 on a 16-pin OBD connector. What does this indicate? A. An open CAN bus B. An open terminating resistor C. A shorted CAN bus D. Normal resistance Answer: B Explanation: A terminating resistor is found at each end of the CAN bus. The terminating resistors can be checked by measuring the resistance between pin 6 and pin 14 of the OBD connector. Normal resistance is 60 ohms. A reading of 120 ohms indicates an open or missing resistor. Question: 7 Cylinder #1 has low compression, but all the other cylinders are okay. Which of the following is the least likely cause? A. A sticking exhaust valve B. A worn camshaft lobe C. A slipped timing belt D. A cracked piston Answer: C Explanation: A slipped timing belt would affect compression on all cylinders, not just one. All the other options could cause low compression on a single cylinder. Question: 8 All the following are true regarding ECU reprogramming except: A. The battery should be fully charged before performing the procedure and maintained during the procedure. B. Some manufacturers download the software straight from a PC to the vehicle. C. The daytime running lights should be off during the procedure. D. Software should always be updated to the newest version. Answer: D Explanation: Visit us athttps://www.certsgrade.com/pdf/ase-l1/ It's recommended that technicians do not perform software reprogramming for any reason except when instructed to do so by a Technician Service Bulletin (TSB) or the vehicle service information. All the other options are true regarding reprogramming. Question: 9 Which type of sensor works in conjunction with a toothed wheel (reluctor wheel)? A. Thermisitor sensor B. Permanent magnet sensor C. Hall effect sensor D. Photo-optical sensor Answer: B Explanation: A permanent magnet sensor works in conjunction with a toothed wheel called a reluctor. Question: 10 The PCV valve is in the maximum flow position to the intake manifold during which of the following? A. Deceleration B. Idle C. Acceleration D. An engine backfire Answer: C Explanation: When the throttle is opened, manifold vacuum drops, causing the Positive Crankcase Ventilation (PCV) valve plunger to unseat and provide maximum flow. Visit us athttps://www.certsgrade.com/pdf/ase-l1/ For More Information – Visit link below: http://www.certsgrade.com/ PRODUCT FEATURES Discount Coupon Code: CERTSGRADE10 100% Money Back Guarantee 90 Days Free updates Special Discounts on Bulk Orders Guaranteed Success 50,000 Satisfied Customers 100% Secure Shopping Privacy Policy Refund Policy Powered by TCPDF (www.tcpdf.org) Visit us athttps://www.certsgrade.com/pdf/ase-l1/