ASE A8 TEST PREP TASK LIST
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3. Inspect, test, service, and replace components of the EGR system, including EGR valve, tubing,
passages, vacuum/pressure controls, filters, hoses, electrical/electronic sensors, controls, solenoids
and wiring of exhaust gas recirculation (EGR) systems.
3. Secondary Air Injection (AIR) And Catalytic Converter (2 questions)
1. Test and diagnose emissions or driveability problems caused by the secondary air injection or
catalytic converter systems.
2. Interpret secondary air injection system related scan tool data and diagnostic troublecodes (DTCs);
determine needed repairs.
3. Inspect, test, service, and replace mechanical components and electrical/electronically- operated
components and circuits of secondary air injection systems.
4. Inspect catalytic converter. Interpret catalytic converter related diagnostic trouble codes (DTCs);
analyze related scan tool data to determine root cause of DTCs; determine needed repairs.
4. Evaporative Emissions Controls (3 questions)
1. Test and diagnose emissions or driveability problems caused by the evaporative emissions control
system.
2. Interpret evaporative emissions-related scan tool data and diagnostic trouble codes (DTCs);
determine needed repairs.
3. Inspect, test, and replace canister, lines/hoses, mechanical and electrical components of the
evaporative emissions control system.
E. Computerized Engine Controls Diagnosis and Repair
(Including OBD II) (13 questions)
1. Retrieve and record diagnostic trouble codes (DTCs), OBD II monitor status and freeze frame data.
2. Diagnose the causes of emissions or driveability problems with stored or active diagnostic trouble
codes (DTCs).
3. Diagnose the causes of emissions or driveability problems without diagnostic troublecodes (DTCs).
4. Use a scan tool, digital multimeter (DMM), or digital storage oscilloscope (DSO) to inspect or test
computerized engine control system sensors, actuators, circuits, and powertrain/engine control
module (PCM/ECM); determine needed repairs.
5. Measure and interpret voltage, voltage drop, amperage, and resistance using digital multimeter
(DMM) readings.
6. Test, remove, inspect, clean, service, and repair or replace power and ground distribution circuits and
connections.
7. Remove and replace the powertrain/engine control module (PCM/ECM); reprogram as needed.
8. Diagnose driveability and emissions problems resulting from failures of interrelated systems (for
example: cruise control, security alarms/theft deterrent, torque controls, traction controls, torque
management, A/C, non-OEM installed accessories).
9. Clear diagnostic trouble codes (DTCs), run all OBD II monitors, and verify the repair.
Summary of Contents for ASE-A8
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