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WorksheetsSession 6 electronics review 2
Total questions: 15
Worksheet time: 8mins
What type of signals can a PCM use directly?
Digital
Variable reluctance
Analog
Low frequency
What does the # mean when viewing PIDs?
Component can be controlled
Component is present
Component cannot be controlled
Parameters have not been met
Photo transistors are what kind of switch
Ground side
AC voltage
Power side
Transistor controlled
VRS sensors produce what kind of signal?
Analog AC
Digital AC
Analog DC
Digital DC
If signal return was open what would a PCM PID read?
Greater than VREF
Less than VREF
Actual sensor voltage
VREF
Direct transistor controlled switching of a component is used in __________ applications
low current, high frequency
high current, high frequency
low current, low frequency
high current, low frequency
Freeze frame data is stored where within the PCM?
ROM
EEPROM
RAM
KAM
A U type DTC indicates a problem with ________.
Body and accessories
Suspension system
Powertrain
Communication related systems
Digital signals are nothing more than a combination of what types of signals?
Variable analog
Sine wave and square wave
Variable Digital
Voltage, no voltage
What is meant by a 'high input failure'?
Signal has more voltage than normal
Signal has less voltage than normal
Signal has a fixed voltage
Signal has no voltage
To turn off a permanent DTC the confirmed fault free monitoring cycles must be?
Consecutive
Consequential
Intermittent
Completed at random
What needs to happen first before a DTC is erased automatically from the system?
MIL light must be extinguished
40 engine warm up cycles
Fault has not been present for one consecutive warm up cycle
DTCs are never erased automatically
What does it mean when an ODDTC becomes a CMDTC?
The concern has become intermittent
The PCM has cleared the ODDTC
The concern has become a hard fault
Someone cleared the code recently
When would a pending fault 'age out'?
If the fault cleared after 1 key cycle
If the fault cleared after 2 key cycles
If the fault cleared after 3 key cycles
If the fault cleared after 4 key cycles
Which of the following statements is true of OBD-II system freeze frame data?
The freeze frame feature only stores data when a fault turns on the MIL
The freeze frame feature stores data even when a fault does not turn on the MIL
Not all OBD-II systems have freeze frame data capabilities
Freeze frame data displays the conditions beginning just after the PCM recorded a DTC
