READ DTCs (01/07)
Selecting this function allows the Scan Tool to read the Diagnostic Trouble
Codes (DTC's) from the vehicle control modules. DTC's are used to help
quickly determine the cause of a problem or problems within a vehicle. These
codes cause the control module (ECU) to illuminate the Malfunction Indicator
Lamp (MIL) when emission-related or drivability fault occurs. MIL is also
known as 'Service Engine Soon' or 'Check Engine' or 'Visit Workshop' lamp.
ERASE DTCs (02/07)
The ERASE DTCs function clears the DTC's and reset all the
I/M Readiness Monitor Status to a NOT-RUN flashing condition. To set all of
the Monitors to a DONE status, an OBDII Drive Cycle must be performed.
Please refer to the vehicle service manual for information on how to perform
an OBDII Drive Cycle for the vehicle under test. This usually involves
driving the vehicle under certain conditions in order for the ECU's to
'relearn' the driving cycle.
The Live Data function allows Real Time Viewing of the vehicles computer
module PID data. As the computer monitors the vehicle, information is
simultaneously transmitted to the scan tool. In this mode, one can see all
engine parameters as engine temperature, advance, engine speed, throttle
position etc. etc.
When an emission-related fault has occurred, certain vehicle data is
recorded by the on-board computer. This information is referred to as Freeze
Frame data. FREEZE FRAME is a snapshot of the operating conditions of the
engine at the time when the emission-related fault had occurred.
When the vehicle on board computer detects a problem in the emission related
systems or components, it's diagnostic program will assign a fault code (DTC)
and store it in its memory. It also records a Freeze Frame of the conditions
present when the fault was found and set the Malfunction Indicator Lamp
(MIL) alight. Some faults require detection for two trips in a row before
the MIL is turned on. This mode is used to check the status of the MIL
light, whether it had been set on or off in case the MIL on the dashboard
The I/M Readiness (Inspection / Maintenance Readiness) function is used to
view a snapshot of the operations on the emission system monitors in OBD II
equipped vehicles. The vehicle ECU constantly monitors it's dependant
systems and if one of them can not complete a full check it might set a DTC.
i.e. the engine temperature should complete a full circle from cold to hot
in order for the relevant I/M to be considered as 'complete'.
This function allows the Scan Tool to request the vehicle information (VIN),
calibration ID(s) which identifies software version in vehicle control
module(s), and calibration verification numbers (CVN(s).)
- Supports all OBDII / EOBD protocols including ISO 9141-2, J1850-PWM,
J1850-VPW, KWP2000 (ISO 14230-4) and CAN (ISO 15765-4).
- It's database consists of more than 7,000 generic OBDII / EOBD codes
such as Powertrain(P0, P2 and P34), Body (BO), Chassis (C0) and Network
- It even has most common
manufacturer's specific DTC's, it has more than 10,000 codes ( P1, P30, B1,
B2, C1, C2, U1 & U2) in it's database.
- It reads and erases DTCs, displays Live data, Freeze Frame (FF), MIL
Status, I/M Readiness, Vehicle Information (VIN).
- It automatically saves the last tested vehicle's results for later
reviewing without having to scan again.
- Built-in rechargeable battery - doesn't need external power for viewing
saved codes. The battery charger is supplied.
For more information about EOBD, OBDII and
CAN look in our
Tech Things To Know section.