The ASE L1 quiz assesses knowledge in engine diagnostics, focusing on issues like low compression, power loss, and fuel injection problems. It evaluates technical skills vital for automotive professionals, aligning with ASE standards.
Analyze scan data
Measure fuel pressure
Road test the vehicle
Check exaust backpressure
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One
Two
Three
Four
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Technician A Only
Technician B Only
Both A and B
Neither A or B
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50 microseconds
100 milliseconds
One second
1000 milliseconds
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Weak EGR diagphragm spring
Stuck open thermostat
Clogged EGR supply tube
Leaking injector
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1500° F
2000° F
2500° F
3000° F
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0%
15%
20%
30%
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Technician A only
Technician B only
Both A and B
Neither A or B
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Start with a warm engine
Keep vehicle speed below 50 MPH
Fuel tank must be between 1/4 and 3/4 full
Immediate shutdowns with no idle periods
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GCWR
Emissions equipment (based on underhood emissions label)
VIN
Engine size
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Stop operation of the starter motor
Verify the key code
Disable injectors if the keycode is invaled
Recognize the ECM ID number
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Technician A only
Technician B only
Both A and B
Neither A or B
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Burned valves
Leaking head gasket
Worn piston rings
Broken timing belt
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Technician A only
Technician B only
Both A and B
Neither A or B
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Technician A only
Technician B only
Both A and B
Neither A or B
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Long engine crank times
Poor fuel economy
High NOx emisions
An off-idle hesitation
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Tecnician A
Technician B
Both A and B
Neither A or B
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EGR valve not seating
Faulty ignition coil
Clogged injector
Vacuum lean
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A shorted A/C request switch
An open circuit at pin B of the A/C pressure sensor
An open circuit at pin A of the A/C pressure sensor
An open circuit at pin 5 of the ECM
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In the CAN harness
In the TCM and the instrument cluster
In the ECM and the immobilizer module
In the ECM and the Instrument Cluster
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Technician A only
Technician B only
Both A and B
Niether A or B
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The converter was damaged as a result of the CO failure
The tecnician damaged the EGR vacuum line while making the initial repair
The CO failure masked the NOx problem
The failed retest was coincidental
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Shorted CMP signal wire to the ECM
Open CKP sensor
Poor connection at ECM terminal 12
Blown fuse no. 4
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7500Ώ
11MΏ
1.5Ώ
8.25kΏ
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Technician A only
Technician B only
Both A and B
Neither A or B
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Shift solenoid No. 1 engaged
Transmission temperature at 150° F
Vehicle speed over 40 MPH
Transmission in 3rd or 4th gear
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Poor cold driveability
Spark knock
Lack power
Excessive NOx emissions
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Faulty regulator
Restricted fuel return line
Defective pump
Leaking injector
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Technician A only
Technician B only
Both A and B
Neither A or B
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Shake th valve to see if it rattles
Perform a vacuum draw test
Perform an rpm drop test
Measure the vacuum signal at the valve
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The CKP sensor is faulty.
The reluctor has a chipped tooth
The CKP sensor is misadjusted
The patter is normal
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Technician A only
Technician B only
Both A and B
Neither A or B
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Technician A only
Technician B only
Both A and B
Neither A or B
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Technician A only
Technician B only
Both A and B
Neither A or B
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Missing air pump drive belt
EGR valbe Stuck closed
EVAP system leak
EGR valve not seating
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Technician A only
Technician B only
Both A and B
Neither A or B
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Technician A only
Technician B only
Both A and B
Neither A or B
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Technician A only
Technician B only
Both A and B
Neither A or B
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The engine is running lean
Sensor switching frequency is too slow
Sensor response time is below normal
The sensor is functioning properly
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Blown fuse No. 4
Gas cap is too tight
Canister vent solenoid resistance is 49 ohms
Poor connection at ECM terminal 36
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Technician A only
Technician B only
Both A and B
Neither A or B
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Clogged PCV valve
Faulty pressure regulator
Restricted fuel return line
Egr valve not seating
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Technician A only
Technician B only
Both A and B
Neither A or B
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Technician A only
Technician B only
Both A and B
Neither A or B
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Technician A only
Technician B only
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Neither A or B
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The Comprehensive Component Monitor is a one-trip test
The Fuel Control, O2 Sensor and Misfire Monitors are run continuously
The EVAP Monitor will not run if engine temperature is above 94 degree F (34 degree C)
A LTFT reading of -30% could cause the Fuel Control Monitor to fail
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Lack of power
High CO emissions
Rough idle
Hard start
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Technician A only
Technician B only
Both A and B
Neither A or B
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