Scan Tools Flashcards
What does PCM stand for?
And what does it monitor?
Power Control Module
-fuel system
-ignition system
-emission control system
What does EBCM stand for?
And what does it monitor?
Electronic Brake Control Module
-ABS (Anti-lock brake system)
What does TCM stand for?
And what does it monitor?
Transmission Control Module
-automatic transmission
What does BCM stand for?
And what does it monitor?
Body Control Module
-air conditioning, cruise, power windows, door locks, immobilizer, etc.
What does SRSM stand for?
And what does it monitor?
Supplemental Restraint System Module
-air bag module
What are the two families of scanner system?
OBD1 (up to 1997)
-AND-
OBD2 (1998 to now)
Where can the OBD2 scan connector be found in a vehicle?
Within 8” of the steering column
-Usually under the dash below the steering wheel
What does DLC stand for?
Diagnostic Link Connector
True or False: all scanners are capable of supplying Diagnostic Trouble Codes (DTC)
True
Do trouble codes point us to the exact problem?
No
If a DTC for a sensor pops up, complete the required diagnostic - it is too early to condemn the part
What are some of the PIDs (Parameter ID) possible to be displayed as data stream?
-engine speed in rpm (revolutions per minute)
-air temperature
-coolant temperature
-throttle position
-engine load
-status of emission control devices
-vehicle speed
ETC ETC ETC
What is a bi-directional or “active” test?
To test the functioning of specific components usually to pinpoint issues specifically by turning on/off:
-command throttle body to open/close
-cooling fan on/off
-turn injectors on/off etc.
-emission control devices
What is freeze frame data?
Data captured at the instant a DTC is triggered
What are some of the reasons you might use a scan tool to do a maintenance reset?
-reset the engine oil change info
-“tell” the computer when the battery has been replaced
-electronic parking brake release during brake pad replacement
